* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary-color: #9333ea;
  --secondary-color: #a855f7;
  --accent-color: #9333ea;
  --text-color: #fff;
  --text-light: #b0b0b0;
  --bg-color: #0a0a0a;
  --bg-dark: #000;
  --bg-light: #1a1a1a;
  --border-color: #333;
  --shadow: 0 10px 30px #9333ea33;
  --shadow-lg: 0 20px 60px #9333ea4d;
  --neon-glow: 0 0 20px #9333ea80, 0 0 40px #9333ea4d, 0 0 60px #9333ea33;
  --focus-ring: #a855f7;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--text-color);
  background: var(--bg-dark);
  text-rendering: optimizelegibility;
  font-family: Inter, PingFang SC, Microsoft YaHei, Segoe UI, Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.navbar {
  backdrop-filter: blur(10px);
  z-index: 1000;
  background: #0a0a0acc;
  border-bottom: 1px solid #9333ea1a;
  width: 100%;
  transition: all .3s;
  position: fixed;
  top: 0;
  box-shadow: 0 2px 20px #9333ea1a;
}

.navbar.scrolled {
  padding: 10px 0;
  box-shadow: 0 4px 30px #00000026;
}

.navbar .container {
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  display: flex;
}

.logo {
  color: var(--primary-color);
  text-shadow: var(--neon-glow);
  letter-spacing: 2px;
  align-items: center;
  font-size: 24px;
  font-weight: 700;
  display: flex;
}

.brand-lockup {
  color: inherit;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  display: inline-flex;
}

.brand-mark {
  --brand-mark-size: 44px;
  width: var(--brand-mark-size);
  height: var(--brand-mark-size);
  isolation: isolate;
  background: linear-gradient(145deg, #7c3aed 0%, #d946ef 58%, #22d3ee 100%);
  border-radius: 14px;
  flex: none;
  display: inline-block;
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 36px #9333ea47;
}

.brand-mark:before {
  content: "";
  z-index: 0;
  background: linear-gradient(160deg, #0a0414eb, #04020afa);
  border-radius: 12px;
  position: absolute;
  inset: 2px;
}

.brand-mark:after {
  content: "";
  z-index: 2;
  background: #fff;
  border-radius: 50%;
  width: 8px;
  height: 8px;
  position: absolute;
  top: 9px;
  right: 9px;
  box-shadow: 0 0 12px #ffffff9e;
}

.brand-mark-orbit, .brand-mark-core, .brand-mark-beam {
  z-index: 1;
  position: absolute;
}

.brand-mark-orbit {
  border: 1px solid #d946ef75;
  border-radius: 11px;
  inset: 7px;
  transform: rotate(12deg);
}

.brand-mark-core {
  border: 2px solid #ffffffe6;
  border-right-color: #0000;
  border-radius: 50%;
  inset: 10px;
  transform: rotate(-18deg);
}

.brand-mark-beam {
  background: linear-gradient(90deg, #fff, #fff0);
  border-radius: 999px;
  width: 18px;
  height: 3px;
  top: 22px;
  left: 16px;
  transform: rotate(42deg);
  box-shadow: 0 0 10px #ffffff6b;
}

.brand-copy, .loading-logo-text {
  flex-direction: column;
  line-height: 1;
  display: flex;
}

.brand-copy {
  gap: 4px;
}

.brand-name {
  letter-spacing: .12em;
  font-size: 1rem;
  font-weight: 700;
}

.brand-tag {
  letter-spacing: .16em;
  color: var(--text-light);
  opacity: .88;
  font-size: .72rem;
}

.loading-logo {
  align-items: center;
  gap: 16px;
  display: inline-flex;
}

.brand-mark-loading {
  --brand-mark-size: 60px;
  border-radius: 18px;
}

.brand-mark-loading:before {
  border-radius: 16px;
}

.loading-logo-text {
  text-align: left;
  gap: 4px;
}

.loading-logo-text strong {
  letter-spacing: .14em;
  font-size: clamp(1.2rem, 2vw, 1.6rem);
}

.loading-logo-text span {
  letter-spacing: .2em;
  color: var(--text-light);
  font-size: .78rem;
}

body.site-theme section:not(.hero) {
  content-visibility: auto;
  contain-intrinsic-size: 780px;
}

.nav-menu {
  gap: 30px;
  list-style: none;
  display: flex;
}

@media (width <= 768px) {
  .brand-lockup {
    gap: 10px;
  }

  .brand-mark {
    --brand-mark-size: 38px;
  }

  .brand-mark-loading {
    --brand-mark-size: 52px;
  }

  .brand-tag {
    display: none;
  }

  .loading-logo {
    gap: 12px;
  }

  .loading-logo-text span {
    letter-spacing: .14em;
  }
}

.nav-link {
  color: var(--text-color);
  font-weight: 500;
  text-decoration: none;
  transition: color .3s;
  position: relative;
}

.nav-link:after {
  content: "";
  background: var(--primary-color);
  width: 0;
  height: 2px;
  box-shadow: 0 0 10px var(--primary-color);
  transition: width .3s;
  position: absolute;
  bottom: -5px;
  left: 0;
}

.nav-link:hover {
  color: var(--primary-color);
  text-shadow: 0 0 10px var(--primary-color);
}

.nav-link:hover:after {
  width: 100%;
}

.nav-link.nav-contact {
  border: 2px solid var(--primary-color);
  border-radius: 25px;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  display: flex;
  box-shadow: 0 0 10px #9333ea4d;
}

.nav-link.nav-contact:after {
  display: none;
}

.nav-link.nav-contact:hover {
  background: var(--primary-color);
  color: var(--bg-dark);
  box-shadow: 0 0 20px var(--primary-color);
}

.nav-link.nav-contact i {
  font-size: .9rem;
  transition: transform .3s;
}

.nav-link.nav-contact:hover i {
  transform: translateX(3px);
}

.nav-item-dropdown {
  position: relative;
}

.dropdown-toggle {
  align-items: center;
  gap: 5px;
  display: flex;
}

.dropdown-toggle i {
  font-size: .7rem;
  transition: transform .3s;
}

.nav-item-dropdown:hover .dropdown-toggle i {
  transform: rotate(180deg);
}

.dropdown-menu {
  background: var(--bg-light);
  opacity: 0;
  visibility: hidden;
  z-index: 1000;
  border: 1px solid #9333ea4d;
  border-radius: 10px;
  min-width: 180px;
  margin-top: 10px;
  padding: 10px 0;
  list-style: none;
  transition: all .3s;
  position: absolute;
  top: 100%;
  left: 0;
  transform: translateY(-10px);
  box-shadow: 0 10px 30px #0000004d;
}

.nav-item-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  margin: 0;
}

.dropdown-link {
  color: var(--text-color);
  padding: 12px 20px;
  text-decoration: none;
  transition: all .3s;
  display: block;
  position: relative;
}

.dropdown-link:before {
  content: "";
  background: var(--primary-color);
  width: 3px;
  height: 100%;
  transition: transform .3s;
  position: absolute;
  top: 0;
  left: 0;
  transform: scaleY(0);
}

.dropdown-link:hover {
  color: var(--primary-color);
  background: #9333ea1a;
  padding-left: 25px;
}

.dropdown-link:hover:before {
  transform: scaleY(1);
}

.dropdown-link.active {
  color: var(--primary-color);
  background: #9333ea33;
  padding-left: 25px;
}

.dropdown-link.active:before {
  transform: scaleY(1);
}

.hamburger {
  cursor: pointer;
  z-index: 1001;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  transition: all .3s;
  display: none;
  position: relative;
}

.hamburger span {
  background: var(--text-color);
  transform-origin: center;
  border-radius: 3px;
  width: 28px;
  height: 3px;
  transition: all .4s cubic-bezier(.68, -.55, .265, 1.55);
}

.hamburger:hover span {
  background: var(--primary-color);
  box-shadow: 0 0 10px #9333ea80;
}

.hamburger.active span:first-child {
  background: var(--primary-color);
  transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
  background: var(--primary-color);
  transform: rotate(-45deg) translate(8px, -8px);
}

.btn {
  cursor: pointer;
  border: none;
  border-radius: 50px;
  padding: 15px 40px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all .3s;
  display: inline-block;
}

.btn-primary {
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: var(--neon-glow);
  background: none;
  position: relative;
  overflow: hidden;
}

.btn-primary:before {
  content: "";
  background: var(--primary-color);
  z-index: -1;
  width: 100%;
  height: 100%;
  transition: left .3s;
  position: absolute;
  top: 0;
  left: -100%;
}

.btn-primary:hover {
  color: var(--bg-dark);
  box-shadow: 0 0 30px var(--primary-color), 0 0 60px var(--primary-color);
  transform: translateY(-3px);
}

.btn-primary:hover:before {
  left: 0;
}

.btn-primary i {
  margin-left: 10px;
  transition: transform .3s;
}

.btn-primary:hover i {
  transform: translateX(5px);
}

.btn-secondary {
  color: var(--text-color);
  border: 2px solid var(--text-color);
  background: none;
  position: relative;
  overflow: hidden;
}

.btn-sm, .btn-primary.btn-sm, .btn-secondary.btn-sm {
  padding: 8px 16px;
  font-size: .9rem;
}

.btn-secondary:before {
  content: "";
  background: var(--text-color);
  z-index: -1;
  width: 100%;
  height: 100%;
  transition: left .3s;
  position: absolute;
  top: 0;
  left: -100%;
}

.btn-secondary:hover {
  color: var(--bg-dark);
  border-color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 0 20px #ffffff4d;
}

.btn-secondary:hover:before {
  left: 0;
}

.btn-secondary i {
  margin-left: 10px;
  transition: transform .3s;
}

.btn-secondary:hover i {
  transform: translateX(5px);
}

.scroll-indicator {
  z-index: 2;
  text-align: center;
  color: var(--text-light);
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator-text {
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
  font-size: .75rem;
}

.scroll-indicator-chinese {
  letter-spacing: 4px;
  opacity: .7;
  margin-top: 5px;
  font-size: .65rem;
}

.mouse {
  border: 2px solid var(--primary-color);
  border-radius: 15px;
  width: 30px;
  height: 50px;
  margin: 0 auto;
  position: relative;
  box-shadow: 0 0 10px #9333ea4d;
}

.wheel {
  background: var(--primary-color);
  width: 4px;
  height: 10px;
  box-shadow: 0 0 5px var(--primary-color);
  border-radius: 2px;
  animation: 2s infinite scroll;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
}

@keyframes scroll {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }

  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
}

.fade-in {
  animation: 1s ease-in fadeIn;
}

.fade-in-delay {
  animation: 1s ease-in .3s both fadeIn;
}

.fade-in-delay-2 {
  animation: 1s ease-in .6s both fadeIn;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.intro-scroll {
  background: var(--bg-color);
  border-top: 1px solid #9333ea1a;
  border-bottom: 1px solid #9333ea1a;
  height: 100px;
  padding: 0;
  position: relative;
  overflow: hidden;
}

.intro-scroll-container {
  align-items: center;
  width: 100%;
  height: 100%;
  display: flex;
  position: relative;
  -webkit-mask-image: linear-gradient(to right, #0000 0%, #000 5% 95%, #0000 100%);
  mask-image: linear-gradient(to right, #0000 0%, #000 5% 95%, #0000 100%);
}

.intro-scroll-content {
  white-space: nowrap;
  color: #fff;
  padding: 25px 0;
  font-size: 1rem;
  line-height: 1.65;
  animation: 82s linear infinite scroll-text;
  display: flex;
}

.intro-text-wrapper {
  white-space: nowrap;
  align-items: center;
  display: inline-flex;
}

.intro-text {
  text-shadow: 0 2px 10px #0003;
  white-space: nowrap;
  letter-spacing: .35px;
  font-weight: 400;
  display: inline-block;
}

.intro-separator {
  opacity: .65;
  margin: 0 36px;
  font-weight: 600;
  display: inline-block;
}

@keyframes scroll-text {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-50%);
  }
}

.intro-scroll:hover .intro-scroll-content {
  animation-play-state: paused;
}

.about {
  background: var(--bg-color);
  padding: 150px 0 100px;
  scroll-margin-top: 100px;
  position: relative;
  overflow: hidden;
}

.about:before {
  content: "";
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle at 20% 30%, #9333ea14 0%, #0000 50%), radial-gradient(circle at 80% 70%, #9333ea14 0%, #0000 50%);
  position: absolute;
  inset: 0;
}

.about > .container {
  z-index: 1;
  position: relative;
}

.about-content {
  align-items: flex-start;
  gap: 60px;
  max-width: 1100px;
  margin-top: 60px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
}

.intro-avatar-wrapper {
  flex-shrink: 0;
  justify-content: center;
  align-items: center;
  width: 260px;
  height: 260px;
  display: flex;
  position: relative;
}

.intro-avatar-wrapper .avatar-glow {
  width: 100%;
  height: 100%;
}

.intro-avatar-wrapper .avatar-container {
  z-index: 2;
  width: 240px;
  height: 240px;
}

.intro-avatar-wrapper .about-avatar {
  width: 100%;
  height: 100%;
}

.avatar-glow {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  opacity: .3;
  filter: blur(40px);
  z-index: 0;
  border-radius: 50%;
  width: 100%;
  height: 100%;
  animation: 3s ease-in-out infinite avatarGlow;
  position: absolute;
}

@keyframes avatarGlow {
  0%, 100% {
    opacity: .3;
    transform: scale(1);
  }

  50% {
    opacity: .5;
    transform: scale(1.1);
  }
}

.avatar-container {
  z-index: 2;
  width: 320px;
  height: 320px;
  position: relative;
}

.about-avatar {
  object-fit: cover;
  border: 6px solid var(--bg-light);
  z-index: 3;
  border-radius: 50%;
  width: 100%;
  height: 100%;
  transition: transform .5s cubic-bezier(.34, 1.56, .64, 1);
  position: relative;
  box-shadow: 0 0 40px #9333ea66, 0 0 80px #9333ea33, inset 0 0 30px #9333ea1a;
}

.avatar-container:hover .about-avatar {
  transform: scale(1.05) rotate(2deg);
  box-shadow: 0 0 60px #9333ea99, 0 0 120px #9333ea4d, inset 0 0 40px #9333ea33;
}

.avatar-border-ring {
  border: 3px solid var(--primary-color);
  opacity: .6;
  z-index: 1;
  border-radius: 50%;
  width: calc(100% + 40px);
  height: calc(100% + 40px);
  animation: 8s linear infinite borderRotate;
  position: absolute;
  top: -20px;
  left: -20px;
}

.avatar-border-ring:before {
  content: "";
  background: var(--primary-color);
  width: 20px;
  height: 20px;
  box-shadow: 0 0 20px var(--primary-color);
  border-radius: 50%;
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
}

@keyframes borderRotate {
  0% {
    transform: rotate(0);
  }

  100% {
    transform: rotate(360deg);
  }
}

.avatar-shine {
  z-index: 4;
  pointer-events: none;
  background: linear-gradient(45deg, #0000 30%, #ffffff1a 50%, #0000 70%);
  border-radius: 50%;
  width: 200%;
  height: 200%;
  animation: 4s linear infinite shineRotate;
  position: absolute;
  top: -50%;
  left: -50%;
}

@keyframes shineRotate {
  0% {
    transform: rotate(0);
  }

  100% {
    transform: rotate(360deg);
  }
}

.image-decoration {
  pointer-events: none;
  width: 100%;
  height: 100%;
  position: absolute;
}

.decoration-dot {
  background: var(--primary-color);
  width: 12px;
  height: 12px;
  box-shadow: 0 0 15px var(--primary-color);
  border-radius: 50%;
  animation: 3s ease-in-out infinite dotFloat;
  position: absolute;
}

.decoration-dot-1 {
  animation-delay: 0s;
  top: 10%;
  left: 15%;
}

.decoration-dot-2 {
  animation-delay: .5s;
  top: 20%;
  right: 10%;
}

.decoration-dot-3 {
  animation-delay: 1s;
  bottom: 15%;
  left: 10%;
}

.decoration-dot-4 {
  animation-delay: 1.5s;
  bottom: 10%;
  right: 20%;
}

@keyframes dotFloat {
  0%, 100% {
    opacity: .7;
    transform: translateY(0) scale(1);
  }

  50% {
    opacity: 1;
    transform: translateY(-20px) scale(1.2);
  }
}

.intro-content-wrapper {
  flex-direction: column;
  flex: 1;
  gap: 35px;
  display: flex;
}

.intro-header {
  flex-direction: column;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  display: flex;
}

.intro-title {
  color: var(--text-color);
  background: linear-gradient(135deg, var(--text-color), var(--primary-color));
  -webkit-text-fill-color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  align-items: center;
  gap: 15px;
  margin: 0;
  font-size: 2.5rem;
  display: flex;
}

.title-icon {
  color: var(--primary-color);
  filter: drop-shadow(0 0 10px #9333ea80);
  font-size: 2rem;
}

.intro-badge {
  color: var(--primary-color);
  background: #9333ea26;
  border: 1px solid #9333ea4d;
  border-radius: 20px;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: .95rem;
  font-weight: 600;
  transition: all .3s;
  display: inline-flex;
}

.intro-badge:hover {
  background: #9333ea40;
  transform: scale(1.05);
}

.intro-content {
  flex-direction: column;
  gap: 25px;
  display: flex;
}

.intro-paragraph {
  color: var(--text-light);
  border-left: 3px solid var(--primary-color);
  background: #0003;
  border-radius: 15px;
  align-items: flex-start;
  gap: 15px;
  margin: 0;
  padding: 20px;
  font-size: 1.1rem;
  line-height: 1.8;
  transition: all .3s;
  display: flex;
}

.intro-paragraph:hover {
  background: #0000004d;
  border-left-width: 5px;
  transform: translateX(5px);
}

.intro-icon {
  color: var(--primary-color);
  filter: drop-shadow(0 0 8px #9333ea80);
  flex-shrink: 0;
  margin-top: 3px;
  font-size: 1.3rem;
}

.intro-paragraph strong {
  color: var(--primary-color);
  font-weight: 600;
}

.about-stats-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
  margin-top: 0;
  display: grid;
}

.stat-card {
  cursor: pointer;
  background: linear-gradient(135deg, #9333ea1a, #9333ea0d);
  border: 1px solid #9333ea33;
  border-radius: 20px;
  align-items: center;
  gap: 20px;
  padding: 30px;
  transition: all .4s cubic-bezier(.34, 1.56, .64, 1);
  display: flex;
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  border-color: #9333ea80;
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 15px 40px #0006, 0 0 30px #9333ea4d;
}

.stat-glow {
  opacity: 0;
  pointer-events: none;
  background: radial-gradient(circle, #9333ea33, #0000);
  width: 200%;
  height: 200%;
  transition: opacity .4s;
  position: absolute;
  top: -50%;
  left: -50%;
}

.stat-card:hover .stat-glow {
  opacity: 1;
}

.stat-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-radius: 15px;
  flex-shrink: 0;
  justify-content: center;
  align-items: center;
  width: 70px;
  height: 70px;
  font-size: 2rem;
  transition: transform .4s cubic-bezier(.34, 1.56, .64, 1);
  display: flex;
  box-shadow: 0 8px 25px #9333ea66;
}

.stat-card:hover .stat-icon {
  transform: rotate(10deg) scale(1.1);
}

.stat-content {
  flex: 1;
}

.stat-number {
  color: var(--primary-color);
  text-shadow: 0 0 20px #9333ea80;
  margin-bottom: 8px;
  font-size: 3rem;
  font-weight: bold;
  line-height: 1;
  transition: transform .3s;
}

.stat-card:hover .stat-number {
  transform: scale(1.1);
}

.stat-label {
  color: var(--text-light);
  font-size: 1rem;
  font-weight: 500;
}

.about-tags {
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 10px;
  display: flex;
}

.tag-item {
  color: var(--text-light);
  cursor: pointer;
  background: #9333ea1a;
  border: 1px solid #9333ea4d;
  border-radius: 25px;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: .95rem;
  font-weight: 500;
  transition: all .3s cubic-bezier(.34, 1.56, .64, 1);
  display: inline-flex;
}

.tag-item:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background: #9333ea33;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 20px #9333ea4d;
}

.tag-item i {
  color: var(--primary-color);
  font-size: 1.1rem;
}

.skills-subtitle {
  color: var(--text-color);
  background: linear-gradient(135deg, var(--text-color), var(--primary-color));
  -webkit-text-fill-color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  align-items: center;
  gap: 15px;
  margin-bottom: 50px;
  font-size: 2rem;
  display: flex;
}

.skills-subtitle i {
  color: var(--primary-color);
  filter: drop-shadow(0 0 10px #9333ea80);
  -webkit-text-fill-color: var(--primary-color);
  font-size: 1.8rem;
}

.skills-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  display: grid;
}

.skill-card {
  text-align: center;
  background: linear-gradient(135deg, #9333ea14, #9333ea08);
  border: 1px solid #9333ea33;
  border-radius: 20px;
  padding: 35px 30px;
  transition: all .4s cubic-bezier(.34, 1.56, .64, 1);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 30px #0003, 0 0 15px #9333ea1a;
}

.skill-card:before {
  content: "";
  background: linear-gradient(90deg, #0000, #9333ea1a, #0000);
  width: 100%;
  height: 100%;
  transition: left .5s;
  position: absolute;
  top: 0;
  left: -100%;
}

.skill-card:hover:before {
  left: 100%;
}

.skill-card:hover {
  border-color: #9333ea80;
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 15px 40px #0000004d, 0 0 30px #9333ea4d;
}

.skill-icon {
  color: var(--primary-color);
  text-shadow: var(--neon-glow);
  margin-bottom: 20px;
  font-size: 60px;
}

.skill-card h3 {
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.skill-bar {
  background: var(--border-color);
  border-radius: 10px;
  width: 100%;
  height: 10px;
  margin-bottom: 10px;
  overflow: hidden;
}

.skill-progress {
  background: var(--primary-color);
  width: 0;
  height: 100%;
  box-shadow: 0 0 10px var(--primary-color);
  border-radius: 10px;
  transition: width 1s;
}

.skill-percent {
  color: var(--text-light);
  font-weight: 600;
}

.portfolio {
  background: var(--bg-dark);
  padding: 100px 0;
  position: relative;
}

.portfolio-filter {
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-bottom: 60px;
  display: flex;
}

.filter-btn {
  background: var(--bg-light);
  cursor: pointer;
  color: var(--text-color);
  border: 2px solid #9333ea4d;
  border-radius: 30px;
  padding: 10px 30px;
  font-size: 16px;
  font-weight: 500;
  transition: all .3s;
}

.filter-btn:hover, .filter-btn.active {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-color: #0000;
  transform: translateY(-2px);
}

.portfolio-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  display: grid;
}

.portfolio-item {
  aspect-ratio: 4 / 3;
  cursor: pointer;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
}

.portfolio-image {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.portfolio-placeholder {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  font-size: 80px;
  transition: transform .3s;
  display: flex;
}

.portfolio-item:hover .portfolio-placeholder {
  transform: scale(1.1);
}

.portfolio-overlay {
  backdrop-filter: blur(5px);
  opacity: 0;
  width: 100%;
  height: 100%;
  color: var(--text-color);
  text-align: center;
  background: #000000d9;
  border: 1px solid #9333ea4d;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
  transition: opacity .3s;
  display: flex;
  position: absolute;
  top: 0;
  left: 0;
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay h3 {
  margin-bottom: 10px;
  font-size: 1.5rem;
}

.portfolio-overlay p {
  margin-bottom: 20px;
}

.portfolio-link {
  color: #fff;
  border: 2px solid #fff;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  text-decoration: none;
  transition: all .3s;
  display: flex;
}

.portfolio-link:hover {
  color: var(--primary-color);
  background: #fff;
  transform: rotate(90deg);
}

.portfolio-item.hide {
  display: none;
}

.article {
  background: var(--bg-light);
  padding: 100px 0;
}

.article-content {
  max-width: 900px;
  margin: 0 auto;
}

.article-post {
  background: var(--bg-light);
  box-shadow: var(--shadow);
  border: 1px solid #9333ea1a;
  border-radius: 20px;
  padding: 60px;
}

.article-header {
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 40px;
  padding-bottom: 30px;
}

.article-header h1 {
  color: var(--text-color);
  margin-bottom: 20px;
  font-size: 2.5rem;
  line-height: 1.3;
}

.article-meta {
  color: var(--text-light);
  gap: 30px;
  font-size: .95rem;
  display: flex;
}

.article-meta span {
  align-items: center;
  gap: 8px;
  display: flex;
}

.article-meta i {
  color: var(--primary-color);
}

.article-body {
  color: var(--text-color);
  line-height: 1.8;
}

.article-body h2 {
  color: var(--text-color);
  border-bottom: 2px solid var(--border-color);
  margin-top: 40px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  font-size: 1.8rem;
}

.article-body h3 {
  color: var(--text-color);
  margin-top: 30px;
  margin-bottom: 15px;
  font-size: 1.4rem;
}

.article-body p {
  color: var(--text-color);
  text-align: justify;
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.article-body ul {
  margin-bottom: 25px;
  padding-left: 30px;
}

.article-body li {
  color: var(--text-color);
  margin-bottom: 12px;
  font-size: 1.05rem;
  line-height: 1.7;
}

.article-body li strong {
  color: var(--primary-color);
  font-weight: 600;
}

.article-body ul li::marker {
  color: var(--primary-color);
}

.contact {
  background: var(--bg-dark);
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.contact-background {
  z-index: 1;
  background: radial-gradient(circle at 20% 30%, #9333ea1a 0%, #0000 50%), radial-gradient(circle at 80% 70%, #9333ea1a 0%, #0000 50%);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

.contact .container {
  z-index: 2;
  position: relative;
}

.contact-message-section {
  box-shadow: var(--shadow);
  background: linear-gradient(#161616f2, #080808f5);
  border: 1px solid #9333ea47;
  border-radius: 20px;
  margin-top: 60px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.contact-message-section h3 {
  color: var(--text-color);
  text-align: center;
  margin-bottom: 30px;
  font-size: 1.8rem;
  font-weight: 700;
}

.contact-message-section h3:after {
  content: "";
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
  width: 60px;
  height: 3px;
  margin: 15px auto 0;
  display: block;
}

.contact-message-section:before {
  content: "";
  opacity: .7;
  pointer-events: none;
  background: radial-gradient(circle at 15% 20%, #9333ea2e, #0000 45%), radial-gradient(circle at 85% 10%, #a855f71f, #0000 40%);
  position: absolute;
  inset: 0;
}

.contact-message-section:after {
  content: "";
  opacity: .2;
  pointer-events: none;
  background-image: linear-gradient(#0000 95%, #9333ea14 100%), linear-gradient(90deg, #0000 95%, #9333ea14 100%);
  background-size: 36px 36px;
  position: absolute;
  inset: 0;
}

.message-form-toggle {
  text-align: center;
  z-index: 1;
  margin-bottom: 20px;
  position: relative;
}

.message-form-toggle .btn {
  border: 1px solid #9333ea66;
  width: 100%;
  max-width: 300px;
  transition: transform .3s, box-shadow .3s;
  animation: 3.5s ease-in-out infinite messageGlow;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 24px #9333ea40;
}

.message-form-toggle .btn:after {
  content: "";
  pointer-events: none;
  background: linear-gradient(120deg, #0000, #ffffff59, #0000);
  width: 60%;
  height: 140%;
  transition: transform .6s;
  position: absolute;
  top: -20%;
  left: -60%;
  transform: translateX(-120%);
}

.message-form-toggle .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px #9333ea59;
}

.message-form-toggle .btn:hover:after {
  transform: translateX(260%);
}

.message-form-header {
  border-bottom: 1px solid var(--border-color);
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  display: flex;
}

.message-form-header h4 {
  color: var(--text-color);
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
}

.message-form-close {
  color: var(--text-light);
  cursor: pointer;
  background: none;
  border: none;
  border-radius: 5px;
  justify-content: center;
  align-items: center;
  padding: 5px 10px;
  font-size: 1.2rem;
  transition: all .3s;
  display: flex;
}

.message-form-close:hover {
  background: var(--bg-light);
  color: var(--text-color);
}

.contact-message-form {
  opacity: 0;
  pointer-events: none;
  z-index: 1;
  max-width: 700px;
  max-height: 0;
  box-shadow: none;
  background: none;
  border: 1px solid #0000;
  border-radius: 16px;
  margin: 0 auto;
  padding: 0;
  transition: max-height .4s, opacity .3s, transform .3s;
  position: relative;
  overflow: hidden;
  transform: translateY(-8px);
}

.contact-message-form.is-open {
  opacity: 1;
  pointer-events: auto;
  -webkit-backdrop-filter: blur(16px);
  background: #0c0c0cb3;
  border: 1px solid #9333ea47;
  max-height: 900px;
  padding: 22px;
  transform: translateY(0);
  box-shadow: 0 14px 36px #00000059;
}

.contact-message-form.is-collapsed {
  opacity: 0;
  pointer-events: none;
  max-height: 0;
}

.contact-message-form .form-group {
  margin-bottom: 25px;
  transition: transform .2s;
}

.contact-message-form .form-group label {
  color: var(--text-color);
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 1rem;
  font-weight: 600;
  transition: color .2s;
  display: flex;
}

.contact-message-form .form-group label i {
  color: var(--primary-color);
}

.contact-message-form .form-group input, .contact-message-form .form-group textarea {
  border: 2px solid var(--border-color);
  box-sizing: border-box;
  background: var(--bg-color);
  width: 100%;
  color: var(--text-color);
  border-radius: 10px;
  padding: 15px;
  font-family: inherit;
  font-size: 1rem;
  transition: all .3s;
}

.contact-message-form .form-group input:focus, .contact-message-form .form-group textarea:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px #9333ea1a;
}

.contact-message-form .form-group:focus-within label {
  color: var(--primary-color);
}

.contact-message-form .form-group:focus-within {
  transform: translateY(-2px);
}

.contact-message-form .form-group textarea {
  resize: vertical;
  min-height: 150px;
  line-height: 1.6;
}

.char-count {
  text-align: right;
  color: var(--text-light);
  margin-top: 5px;
  font-size: .85rem;
}

.char-count span {
  font-weight: 600;
}

.char-count.over-limit {
  color: #ff6b6b;
}

.submit-message-btn {
  width: 100%;
  margin-top: 10px;
  padding: 15px;
  font-size: 1.1rem;
  position: relative;
  overflow: hidden;
}

.submit-message-btn:after {
  content: "";
  pointer-events: none;
  background: linear-gradient(120deg, #0000, #fff3, #0000);
  transition: transform .6s;
  position: absolute;
  inset: 0;
  transform: translateX(-120%);
}

.submit-message-btn:hover:after {
  transform: translateX(120%);
}

.submit-message-btn i {
  margin-right: 8px;
}

.contact-message-section .message-success, .contact-message-section .message-error {
  text-align: center;
  opacity: 0;
  border-radius: 10px;
  margin-top: 20px;
  padding: 15px 20px;
  font-size: 1rem;
  transition: opacity .3s, transform .3s;
  animation: .3s fadeIn;
  transform: translateY(-6px);
}

.contact-message-section .message-success {
  color: #155724;
  background: #d4edda;
  border: 1px solid #c3e6cb;
  box-shadow: 0 8px 20px #28a74533;
}

.message-success i {
  color: #28a745;
  margin-right: 8px;
}

.contact-message-section .message-error {
  color: #721c24;
  background: #f8d7da;
  border: 1px solid #f5c6cb;
  box-shadow: 0 8px 20px #dc354533;
}

.contact-message-section .message-error i {
  color: #dc3545;
  margin-right: 8px;
}

.contact-message-section .message-success.is-visible, .contact-message-section .message-error.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.contact-honeypot {
  width: 1px;
  height: 1px;
  position: absolute;
  top: auto;
  left: -9999px;
  overflow: hidden;
}

@media (width <= 768px) {
  .leaderboard-item {
    grid-template-columns: 50px 1fr 100px;
    gap: 10px;
  }

  .leaderboard-time {
    display: none;
  }

  .contact-message-section {
    padding: 25px 20px;
  }

  .contact-message-form .form-group input, .contact-message-form .form-group textarea {
    font-size: .95rem;
  }
}

@media (width <= 980px) {
  .contact-content {
    grid-template-columns: 1fr;
  }
}

.contact-cards {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
  display: grid;
}

.contact-card {
  background: var(--bg-light);
  text-align: center;
  border: 1px solid #9333ea1a;
  border-radius: 20px;
  padding: 40px 30px;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px #9333ea1a;
}

.contact-card:before {
  content: "";
  background: var(--primary-color);
  width: 100%;
  height: 4px;
  box-shadow: 0 0 10px var(--primary-color);
  transition: transform .4s;
  position: absolute;
  top: 0;
  left: 0;
  transform: scaleX(0);
}

.contact-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-10px);
  box-shadow: 0 20px 60px #9333ea4d;
}

.contact-card:hover:before {
  transform: scaleX(1);
}

.contact-card-icon {
  color: #fff;
  border-radius: 20px;
  justify-content: center;
  align-items: center;
  width: 80px;
  height: 80px;
  margin: 0 auto 25px;
  font-size: 32px;
  transition: all .4s;
  display: flex;
  box-shadow: 0 10px 30px #0003;
}

.contact-card:hover .contact-card-icon {
  transform: scale(1.1) rotate(5deg);
}

.email-icon {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.phone-icon {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.location-icon {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.contact-card h4 {
  color: var(--text-color);
  margin-bottom: 15px;
  font-size: 1.3rem;
  font-weight: 600;
}

.contact-link {
  color: var(--text-light);
  font-size: 1.05rem;
  text-decoration: none;
  transition: all .3s;
  display: inline-block;
}

.contact-card a.contact-link:hover {
  color: var(--primary-color);
  transform: translateX(5px);
}

.social-links {
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  display: flex;
}

.social-link {
  background: var(--bg-light);
  color: var(--text-color);
  border: 2px solid #0000;
  border-radius: 50px;
  align-items: center;
  gap: 12px;
  padding: 15px 30px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: all .3s;
  display: flex;
  box-shadow: 0 5px 15px #00000014;
}

.social-link i {
  text-align: center;
  width: 24px;
  font-size: 20px;
}

.social-link:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px #00000026;
}

.github-link:hover {
  color: #fff;
  background: #24292e;
  border-color: #24292e;
}

.linkedin-link:hover {
  color: #fff;
  background: #0077b5;
  border-color: #0077b5;
}

.twitter-link:hover {
  color: #fff;
  background: #1da1f2;
  border-color: #1da1f2;
}

.instagram-link:hover {
  color: #fff;
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  border-color: #0000;
}

.contact-form {
  background: var(--bg-light);
  box-shadow: var(--shadow);
  border: 1px solid #9333ea1a;
  border-radius: 20px;
  padding: 40px;
}

.form-group input, .form-group textarea {
  border: 2px solid var(--border-color);
  border-radius: 10px;
  width: 100%;
  padding: 15px;
  font-family: inherit;
  font-size: 16px;
  transition: all .3s;
}

.form-group textarea {
  resize: vertical;
}

.footer {
  background: var(--bg-dark);
  color: var(--text-light);
  text-align: center;
  border-top: 1px solid #9333ea1a;
  padding: 40px 0;
}

.footer p {
  color: var(--text-light);
  opacity: .8;
  letter-spacing: .3px;
  margin: 0;
  font-size: .9rem;
}

.visitor-counter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  opacity: .7;
  font-size: .82rem;
  letter-spacing: .04em;
  margin-bottom: 10px;
}

.visitor-counter i {
  color: var(--primary-color);
  font-size: .9rem;
}

.visitor-counter strong {
  color: var(--accent-color);
  font-weight: 700;
}

@media (width <= 768px) {
  .footer {
    padding: 30px 0;
  }

  .footer-content {
    gap: 15px;
  }

  .footer-links {
    gap: 15px;
    margin-bottom: 15px;
  }

  .footer-link {
    padding: 10px 20px;
    font-size: .9rem;
  }

  .footer p {
    padding: 0 20px;
    font-size: .85rem;
  }
}

.back-to-top {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  z-index: 999;
  width: 50px;
  height: 50px;
  box-shadow: var(--shadow);
  border: none;
  border-radius: 50%;
  font-size: 20px;
  transition: all .3s;
  position: fixed;
  bottom: 30px;
  right: 30px;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

/* 分享浮动按钮 */
.share-fab {
  position: fixed;
  bottom: 92px;
  right: 30px;
  z-index: 998;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: 10px;
}

.share-fab-trigger {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px var(--glow-purple);
  transition: transform .3s, box-shadow .3s;
}

.share-fab-trigger:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 32px var(--glow-purple);
}

.share-fab-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .25s, transform .25s, visibility .25s;
  pointer-events: none;
}

.share-fab.is-open .share-fab-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.share-fab-item {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--surface-strong);
  border: 1px solid var(--card-border);
  color: var(--text-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s, border-color .2s, transform .2s, color .2s;
  box-shadow: var(--shadow);
}

.share-fab-item:hover {
  background: #8b5cf618;
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: scale(1.12);
}

.share-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  padding: 10px 24px;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, transform .3s, visibility .3s;
  z-index: 10001;
  box-shadow: 0 8px 24px var(--glow-purple);
}

.share-toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* 滚动揭示动画 */
[data-reveal] {
  opacity: 0;
  transition: opacity .6s ease, transform .6s ease;
}

[data-reveal="fade-up"] {
  transform: translateY(32px);
}

[data-reveal="fade-down"] {
  transform: translateY(-32px);
}

[data-reveal="fade-left"] {
  transform: translateX(40px);
}

[data-reveal="fade-right"] {
  transform: translateX(-40px);
}

[data-reveal="zoom-in"] {
  transform: scale(.92);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media (width <= 768px) {
  .share-fab {
    bottom: 80px;
    right: 16px;
  }

  .share-fab-trigger {
    width: 40px;
    height: 40px;
  }

  .share-fab-item {
    width: 34px;
    height: 34px;
  }
}

@media (width <= 768px) {
  .container {
    padding: 0 15px;
  }

  .navbar .container {
    padding: 15px;
  }

  .logo {
    font-size: 20px;
  }

  .mobile-menu-overlay {
    display: none;
  }

  .mobile-menu-overlay.active {
    backdrop-filter: blur(5px);
    z-index: 998;
    background: #000000b3;
    width: 100%;
    height: 100vh;
    animation: .3s fadeIn;
    display: block;
    position: fixed;
    top: 0;
    left: 0;
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
    }

    to {
      opacity: 1;
    }
  }

  .hamburger {
    display: flex;
  }

  .hamburger span {
    width: 26px;
    height: 2.5px;
    box-shadow: 0 0 8px #9333ea80;
    background: var(--primary-color) !important;
  }

  .nav-menu {
    backdrop-filter: blur(20px);
    z-index: 999;
    background: linear-gradient(#0a0a0afa 0%, #1a1a1afa 100%);
    border-left: 2px solid #9333ea4d;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    width: 85%;
    max-width: 350px;
    height: 100vh;
    padding: 80px 0 40px;
    transition: right .4s cubic-bezier(.68, -.55, .265, 1.55);
    position: fixed;
    top: 0;
    right: -100%;
    overflow: hidden auto;
    box-shadow: -10px 0 50px #00000080, 0 0 30px #9333ea33;
  }

  .nav-menu::-webkit-scrollbar {
    width: 4px;
  }

  .nav-menu::-webkit-scrollbar-track {
    background: none;
  }

  .nav-menu::-webkit-scrollbar-thumb {
    background: #9333ea4d;
    border-radius: 2px;
  }

  .nav-menu::-webkit-scrollbar-thumb:hover {
    background: #9333ea80;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu li {
    opacity: 0;
    width: 100%;
    margin: 0;
    transition: all .4s cubic-bezier(.68, -.55, .265, 1.55);
    transform: translateX(30px);
  }

  .nav-menu.active li {
    opacity: 1;
    transform: translateX(0);
  }

  .nav-menu.active li:first-child {
    transition-delay: 50ms;
  }

  .nav-menu.active li:nth-child(2) {
    transition-delay: .1s;
  }

  .nav-menu.active li:nth-child(3) {
    transition-delay: .15s;
  }

  .nav-menu.active li:nth-child(4) {
    transition-delay: .2s;
  }

  .nav-menu.active li:nth-child(5) {
    transition-delay: .25s;
  }

  .nav-menu.active li:nth-child(6) {
    transition-delay: .3s;
  }

  .nav-menu.active li:nth-child(7) {
    transition-delay: .35s;
  }

  .nav-menu.active li:nth-child(8) {
    transition-delay: .4s;
  }

  .nav-menu.active li:nth-child(9) {
    transition-delay: .45s;
  }

  .nav-menu.active li:nth-child(10) {
    transition-delay: .5s;
  }

  .nav-link {
    width: 100%;
    color: var(--text-color);
    border-left: 3px solid #0000;
    padding: 16px 30px;
    font-size: 18px;
    transition: all .3s;
    display: block;
    position: relative;
  }

  .nav-link:before {
    content: "";
    background: linear-gradient(90deg, #9333ea1a 0%, #0000 100%);
    width: 0;
    transition: width .3s;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
  }

  .nav-link:hover:before, .nav-link:active:before {
    width: 100%;
  }

  .nav-link:hover, .nav-link:active {
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    text-shadow: 0 0 10px #9333ea80;
    padding-left: 35px;
  }

  .nav-link:after {
    display: none;
  }

  .nav-item-dropdown {
    width: 100%;
  }

  .dropdown-toggle {
    cursor: pointer;
    justify-content: space-between;
    width: 100%;
    padding-right: 30px;
  }

  .dropdown-toggle i {
    transition: transform .3s;
  }

  .nav-item-dropdown.active .dropdown-toggle i {
    transform: rotate(180deg);
  }

  .dropdown-menu {
    opacity: 0;
    visibility: hidden;
    width: 100%;
    max-height: 0;
    box-shadow: none;
    background: #9333ea14;
    border: none;
    border-left: 3px solid #9333ea4d;
    border-radius: 0;
    margin-top: 0;
    margin-left: 0;
    padding: 0;
    transition: max-height .4s cubic-bezier(.68, -.55, .265, 1.55), opacity .3s, visibility .3s;
    position: static;
    overflow: hidden;
    transform: none;
  }

  .dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    max-height: 600px;
    padding: 10px 0;
  }

  .dropdown-menu li {
    opacity: 1;
    transition: none;
    transform: none;
  }

  .dropdown-link {
    color: var(--text-light);
    padding: 14px 30px 14px 50px;
    font-size: 16px;
    transition: all .3s;
    display: block;
    position: relative;
  }

  .dropdown-link:before {
    content: "▸";
    color: var(--primary-color);
    opacity: .5;
    transition: all .3s;
    position: absolute;
    left: 30px;
  }

  .dropdown-link:hover, .dropdown-link:active {
    color: var(--primary-color);
    background: #9333ea1a;
    padding-left: 55px;
  }

  .dropdown-link:hover:before, .dropdown-link:active:before {
    opacity: 1;
    left: 35px;
  }

  .section-title {
    margin-bottom: 40px;
    font-size: 2rem;
  }

  .about {
    padding: 120px 0 60px;
    scroll-margin-top: 80px;
  }

  .about-content {
    flex-direction: column;
    align-items: center;
    gap: 40px;
    margin-top: 30px;
  }

  .intro-avatar-wrapper {
    order: -1;
    width: 220px;
    height: 220px;
    margin: 0 auto;
  }

  .intro-avatar-wrapper .avatar-container {
    width: 200px;
    height: 200px;
  }

  .intro-content-wrapper {
    gap: 25px;
    width: 100%;
  }

  .intro-title {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    font-size: 1.8rem;
  }

  .title-icon {
    font-size: 1.5rem;
  }

  .intro-badge {
    padding: 8px 16px;
    font-size: .85rem;
  }

  .intro-paragraph {
    flex-direction: column;
    gap: 10px;
    padding: 15px;
    font-size: 1rem;
  }

  .intro-icon {
    font-size: 1.1rem;
  }

  .about-stats-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .stat-card {
    padding: 25px 20px;
  }

  .stat-icon {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }

  .stat-number {
    font-size: 2.2rem;
  }

  .stat-label {
    font-size: .9rem;
  }

  .about-tags {
    gap: 10px;
  }

  .tag-item {
    padding: 10px 16px;
    font-size: .85rem;
  }

  .about-skills-section {
    margin-top: 50px;
    padding-top: 40px;
  }

  .skills-subtitle {
    margin-bottom: 35px;
    font-size: 1.5rem;
  }

  .skills-subtitle i {
    font-size: 1.3rem;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .skill-card {
    padding: 30px 20px;
  }

  .skill-icon {
    font-size: 50px;
  }

  .skill-card h3 {
    font-size: 1.3rem;
  }

  .honor, .steps, .projects {
    padding: 60px 0;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .project-category {
    padding: 25px 20px;
  }

  .project-category h3 {
    font-size: 1.3rem;
  }

  .project-file-list {
    gap: 15px;
  }

  .project-file-item {
    padding: 15px;
  }

  .contact {
    padding: 60px 0;
  }

  .contact-header {
    margin-bottom: 40px;
  }

  .contact-subtitle {
    font-size: 1.3rem;
  }

  .contact-description {
    padding: 0 20px;
    font-size: 1rem;
  }

  .contact-cards {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-bottom: 40px;
  }

  .contact-card {
    padding: 30px 25px;
  }

  .contact-card-icon {
    width: 70px;
    height: 70px;
    font-size: 28px;
  }

  .social-section {
    padding: 40px 30px;
  }

  .social-section h3 {
    margin-bottom: 25px;
    font-size: 1.5rem;
  }

  .social-links {
    flex-direction: column;
    gap: 15px;
  }

  .social-link {
    justify-content: center;
    width: 100%;
  }

  .intro-scroll {
    height: 80px;
  }

  .intro-scroll-content {
    padding: 15px 0;
    font-size: .75rem;
    animation-duration: 120s;
  }

  .intro-text {
    font-size: .75rem;
  }

  .intro-separator {
    margin: 0 20px;
    font-size: 1.2rem;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .article {
    padding: 60px 0;
  }

  .article-post {
    padding: 30px 20px;
  }

  .article-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
  }

  .article-header h1 {
    font-size: 1.8rem;
    line-height: 1.3;
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 15px;
    font-size: .85rem;
  }

  .article-body h2 {
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.4rem;
  }

  .article-body h3 {
    margin-top: 25px;
    margin-bottom: 12px;
    font-size: 1.2rem;
  }

  .article-body p, .article-body li {
    font-size: .95rem;
    line-height: 1.7;
  }

  .article-body ul {
    padding-left: 20px;
  }

  .article-body li {
    margin-bottom: 10px;
  }

  .articles-list {
    padding: 80px 0 60px;
  }

  .article-list-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .article-list-item {
    padding: 20px;
  }

  .article-tabs {
    gap: 15px;
    margin-bottom: 40px;
  }

  .tab-btn {
    padding: 10px 30px;
    font-size: 14px;
  }

  .password-modal-content {
    max-width: 90%;
    padding: 40px 30px;
  }

  .password-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    font-size: 28px;
  }

  .password-modal-content h2 {
    font-size: 1.5rem;
  }

  .password-input {
    padding: 12px 15px;
    font-size: 16px;
  }

  .back-to-top {
    width: 45px;
    height: 45px;
    font-size: 18px;
    bottom: 20px;
    right: 20px;
  }
}

@media (width <= 480px) {
  .container {
    padding: 0 12px;
  }

  .navbar .container {
    padding: 12px;
  }

  .logo {
    font-size: 18px;
  }

  .hamburger span {
    width: 24px;
    height: 2.5px;
    box-shadow: 0 0 6px #9333ea80;
    background: var(--primary-color) !important;
  }

  .nav-menu {
    width: 85%;
    max-width: 300px;
    padding: 65px 0 25px;
  }

  .nav-link {
    padding: 14px 25px;
    font-size: 16px;
  }

  .dropdown-link {
    padding: 12px 25px 12px 45px;
    font-size: 15px;
  }

  .dropdown-link:before {
    left: 25px;
  }

  .dropdown-link:hover, .dropdown-link:active {
    padding-left: 50px;
  }

  .dropdown-link:hover:before, .dropdown-link:active:before {
    left: 30px;
  }

  .intro-title {
    font-size: 1.5rem;
  }

  .title-icon {
    font-size: 1.3rem;
  }

  .intro-paragraph {
    padding: 12px;
    font-size: .95rem;
  }

  .stat-icon {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
  }

  .tag-item {
    padding: 8px 14px;
    font-size: .8rem;
  }

  .about {
    padding: 100px 0 50px;
    scroll-margin-top: 70px;
  }

  .about-content {
    flex-direction: column;
    align-items: center;
    gap: 30px;
    margin-top: 20px;
  }

  .intro-avatar-wrapper {
    order: -1;
    width: 180px;
    height: 180px;
    margin: 0 auto;
  }

  .intro-avatar-wrapper .avatar-container {
    width: 160px;
    height: 160px;
  }

  .intro-content-wrapper {
    gap: 20px;
    width: 100%;
  }

  .stat-number {
    font-size: 1.75rem;
  }

  .about-skills-section {
    margin-top: 35px;
    padding-top: 30px;
  }

  .skills-subtitle {
    margin-bottom: 25px;
    font-size: 1.3rem;
  }

  .skills-subtitle i {
    font-size: 1.1rem;
  }

  .skill-card {
    padding: 25px 15px;
  }

  .skill-icon {
    font-size: 45px;
  }

  .skill-card h3 {
    font-size: 1.2rem;
  }

  .projects {
    padding: 50px 0;
  }

  .project-category {
    padding: 20px 15px;
  }

  .project-category h3 {
    font-size: 1.2rem;
  }

  .article-list-item {
    padding: 15px;
  }

  .article-item-header h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
  }

  .article-item-meta {
    gap: 12px;
    font-size: .8rem;
  }

  .article-item-excerpt {
    margin-bottom: 15px;
    font-size: .9rem;
  }

  .article-actions {
    flex-direction: column;
    gap: 10px;
  }

  .article-read-more {
    justify-content: center;
    width: 100%;
    padding: 12px 20px;
    font-size: 14px;
  }

  .articles-list {
    padding: 70px 0 50px;
  }

  .article-tabs {
    gap: 12px;
    margin-bottom: 30px;
  }

  .tab-btn {
    padding: 8px 25px;
    font-size: 13px;
  }

  .password-modal-content {
    padding: 30px 20px;
  }

  .password-icon {
    width: 50px;
    height: 50px;
    font-size: 24px;
  }

  .password-modal-content h2 {
    font-size: 1.3rem;
  }

  .password-modal-content > p {
    font-size: .9rem;
  }

  .password-input {
    padding: 12px 60px 12px 12px;
  }

  .password-hint {
    margin-top: 8px;
    padding-left: 5px;
    font-size: .85rem;
    position: static;
  }

  .password-hint span {
    display: inline;
  }

  .password-hint:after {
    content: "";
  }

  .contact {
    padding: 50px 0;
  }

  .contact-header {
    margin-bottom: 30px;
  }

  .contact-subtitle {
    font-size: 1.1rem;
  }

  .contact-description {
    padding: 0 15px;
    font-size: .9rem;
  }

  .contact-cards {
    gap: 20px;
    margin-bottom: 30px;
  }

  .contact-card {
    padding: 25px 20px;
  }

  .contact-card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    font-size: 24px;
  }

  .contact-card h4 {
    margin-bottom: 12px;
    font-size: 1.2rem;
  }

  .contact-link {
    font-size: .95rem;
  }

  .social-section {
    padding: 30px 20px;
  }

  .social-section h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
  }

  .social-link {
    padding: 12px 25px;
    font-size: 14px;
  }

  .social-link i {
    font-size: 18px;
  }

  .intro-scroll {
    height: 70px;
  }

  .intro-scroll-content {
    padding: 12px 0;
    font-size: .7rem;
    animation-duration: 140s;
  }

  .intro-text {
    font-size: .7rem;
  }

  .intro-separator {
    margin: 0 15px;
    font-size: 1rem;
  }

  .back-to-top {
    width: 40px;
    height: 40px;
    font-size: 16px;
    bottom: 15px;
    right: 15px;
  }
}

.projects {
  background: var(--bg-light);
  padding: 100px 0;
}

.projects-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  display: grid;
}

.project-category {
  box-shadow: var(--shadow);
  background: #fff;
  border-radius: 20px;
  padding: 30px;
  transition: transform .3s, box-shadow .3s;
}

.project-category:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.category-header {
  border-bottom: 2px solid var(--border-color);
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
  padding-bottom: 20px;
  display: flex;
}

.category-header i {
  color: var(--primary-color);
  font-size: 32px;
}

.category-header h3 {
  color: var(--text-color);
  margin: 0;
  font-size: 1.5rem;
}

.file-list {
  flex-direction: column;
  gap: 12px;
  display: flex;
}

.file-item {
  background: var(--bg-light);
  cursor: default;
  border-radius: 10px;
  align-items: center;
  gap: 15px;
  padding: 15px;
  transition: all .3s;
  display: flex;
}

.file-item:hover {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  transform: translateX(10px);
}

.file-item i {
  color: var(--primary-color);
  font-size: 24px;
  transition: color .3s;
}

.file-item:hover i {
  color: #fff;
}

.file-item span {
  font-size: 1rem;
  font-weight: 500;
}

.articles-list {
  background: var(--bg-color);
  min-height: calc(100vh - 70px);
  padding: 120px 0 100px;
}

.password-modal {
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  z-index: 10000;
  background: rgba(0, 0, 0, 0.7);
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  animation: .4s cubic-bezier(0.16, 1, 0.3, 1) fadeIn;
  display: none;
  position: fixed;
  top: 0;
  left: 0;
}

.password-modal.active {
  display: flex;
}

.password-modal-content {
  background: rgba(30, 27, 46, 0.7);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  text-align: center;
  border: 1px solid rgba(147, 51, 234, 0.3);
  border-radius: 24px;
  width: 90%;
  max-width: 440px;
  padding: 50px 40px;
  animation: .5s cubic-bezier(0.16, 1, 0.3, 1) slideUp;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

/* Background glow inside the modal */
.password-modal-content::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(147, 51, 234, 0.1) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.password-icon-wrapper {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto 30px;
  z-index: 1;
}

.password-icon-wrapper::before {
  content: '';
  position: absolute;
  inset: -5px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  opacity: 0.6;
  filter: blur(12px);
  animation: sponsorGlowPulse 4s ease-in-out infinite alternate;
  z-index: 0;
}

.password-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  font-size: 36px;
  display: flex;
  position: relative;
  z-index: 1;
  border: 3px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(147, 51, 234, 0.4);
}

.password-modal-content h2 {
  color: var(--text-color);
  margin-bottom: 15px;
  font-size: 1.8rem;
  font-weight: 800;
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, #fff 0%, #a8b2d1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.password-modal-content > p.password-helper {
  color: var(--text-light);
  margin-bottom: 25px;
  font-size: 0.95rem;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.password-form {
  flex-direction: column;
  gap: 20px;
  width: 100%;
  display: flex;
  position: relative;
  z-index: 1;
}

.password-riddle {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(147, 51, 234, 0.15);
  border: 1px solid rgba(147, 51, 234, 0.3);
  border-radius: 20px;
  color: var(--primary-light);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 auto 25px;
  box-shadow: inset 0 0 10px rgba(147, 51, 234, 0.1);
}

.password-input-wrapper {
  width: 100%;
  position: relative;
}

.password-input {
  background: rgba(0, 0, 0, 0.3);
  width: 100%;
  color: var(--text-color);
  box-sizing: border-box;
  border: 2px solid rgba(147, 51, 234, 0.3);
  border-radius: 12px;
  padding: 16px 20px;
  font-family: inherit;
  font-size: 16px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.password-input:focus {
  border-color: var(--primary-color);
  outline: none;
  background: rgba(0, 0, 0, 0.5);
  box-shadow: 0 0 0 4px rgba(147, 51, 234, 0.15);
  transform: translateY(-2px);
}

.password-hint {
  color: var(--text-light);
  pointer-events: none;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding-left: 5px;
  font-size: 0.85rem;
  display: flex;
  position: static;
}

.password-hint i {
  color: var(--primary-color);
  font-size: 1rem;
}

.password-input.error-shake {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
  animation: .5s shake;
}

.password-clue-list {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  margin-bottom: 5px;
}

.password-clue-list span {
  font-size: 0.85rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.05);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.password-clue-list i {
  color: var(--primary-color);
}

.password-form-actions {
  flex-direction: column;
  gap: 12px;
  width: 100%;
  display: flex;
  margin-top: 10px;
}

.password-submit {
  border-radius: 12px;
  width: 100%;
  padding: 16px;
  font-size: 16px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border: none;
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(147, 51, 234, 0.3);
}

.password-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(147, 51, 234, 0.5);
}

.password-submit:active {
  transform: translateY(1px);
}

.password-error {
  color: #ef4444;
  min-height: 20px;
  margin-top: 15px;
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  z-index: 1;
}

.password-back-btn {
  width: 100%;
  color: var(--text-color);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 14px;
  font-size: 15px;
  transition: all .3s;
  display: flex;
}

.password-back-btn:hover {
  border-color: var(--primary-color);
  background: rgba(147, 51, 234, 0.1);
  color: var(--primary-light);
  transform: translateY(-2px);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(60px) scale(0.95);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }

  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-8px);
  }

  20%, 40%, 60%, 80% {
    transform: translateX(8px);
  }
}

.article-tabs {
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-bottom: 50px;
  display: flex;
}

.tab-btn {
  border: 2px solid var(--border-color);
  background: var(--bg-light);
  cursor: pointer;
  color: var(--text-color);
  border-radius: 30px;
  padding: 12px 40px;
  font-size: 16px;
  font-weight: 500;
  transition: all .3s;
}

.tab-btn:hover, .tab-btn.active {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-color: #0000;
  transform: translateY(-2px);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.article-list-grid {
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
}

.article-list-item {
  background: var(--bg-light);
  box-shadow: var(--shadow);
  border: 1px solid #9333ea33;
  border-radius: 20px;
  padding: 30px;
  transition: all .3s;
}

.article-list-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.article-item-header {
  margin-bottom: 15px;
}

.article-item-header h3 {
  margin-bottom: 15px;
  font-size: 1.5rem;
}

.article-item-header h3 a {
  color: var(--text-color);
  text-decoration: none;
  transition: color .3s;
}

.article-item-header h3 a:hover {
  color: var(--primary-color);
}

.article-item-meta {
  color: var(--text-light);
  flex-wrap: wrap;
  gap: 20px;
  font-size: .9rem;
  display: flex;
}

.article-item-meta span {
  align-items: center;
  gap: 5px;
  display: flex;
}

.article-item-meta i {
  color: var(--primary-color);
}

.article-item-excerpt {
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.8;
}

.article-actions {
  flex-wrap: wrap;
  gap: 15px;
  display: flex;
}

.article-read-more {
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: 25px;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-weight: 600;
  text-decoration: none;
  transition: all .3s;
  display: inline-flex;
}

.article-read-more:hover {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-color: #0000;
  gap: 12px;
}

.sponsor-section {
  background: #000;
  min-height: calc(100vh - 70px);
  padding: 120px 0 100px;
}

.sponsor-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.sponsor-card {
  background: #000;
  border: 1px solid #ffffff1a;
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 10px 40px #ffffff1a;
}

.sponsor-features {
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.sponsor-features li {
  color: #fff;
  background: #1a1a1a;
  border: 1px solid #ffffff1a;
  border-radius: 12px;
  align-items: center;
  gap: 15px;
  margin-bottom: 15px;
  padding: 20px;
  font-size: 1rem;
  font-weight: 500;
  transition: all .3s;
  display: flex;
}

.sponsor-features li:hover {
  background: #2a2a2a;
  border-color: #fff3;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px #ffffff1a;
}

.sponsor-features li i {
  color: var(--primary-color);
  min-width: 30px;
  font-size: 1.5rem;
}

.sponsor-image-wrapper {
  text-align: center;
  margin: 30px 0;
}

.sponsor-image {
  background: #000;
  border-radius: 12px;
  max-width: 100%;
  height: auto;
  padding: 10px;
  box-shadow: 0 4px 12px #ffffff1a;
}

.sponsor-actions {
  justify-content: center;
  margin-top: 20px;
  display: flex;
}

.btn-contact {
  color: #fff;
  background: none;
  border: 2px solid #fff;
  border-radius: 25px;
  align-items: center;
  gap: 10px;
  padding: 12px 30px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all .3s;
  display: inline-flex;
}

.btn-contact:hover {
  background: #ffffff1a;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px #fff3;
}

.btn-contact i {
  font-size: 1.1rem;
}

.sponsor-modal {
  backdrop-filter: blur(10px);
  z-index: 10001;
  background: #000c;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  animation: .4s fadeIn;
  display: none;
  position: fixed;
  top: 0;
  left: 0;
}

.sponsor-modal.active {
  display: flex;
}

.sponsor-modal-content {
  background: linear-gradient(135deg, var(--bg-light), var(--bg-dark));
  text-align: center;
  border: 2px solid #9333ea66;
  border-radius: 25px;
  width: 90%;
  max-width: 500px;
  padding: 40px;
  animation: .4s cubic-bezier(.68, -.55, .265, 1.55) slideUp;
  position: relative;
  box-shadow: 0 25px 70px #9333ea99, 0 0 50px #9333ea4d;
}

.sponsor-modal-close {
  width: 35px;
  height: 35px;
  color: var(--text-color);
  cursor: pointer;
  z-index: 10;
  background: #ffffff1a;
  border: 2px solid #9333ea4d;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  font-size: 18px;
  transition: all .3s;
  display: flex;
  position: absolute;
  top: 15px;
  right: 15px;
}

.sponsor-modal-close:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background: #9333ea4d;
  transform: rotate(90deg);
  box-shadow: 0 0 15px #9333ea80;
}

.sponsor-modal-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 80px;
  height: 80px;
  margin: 0 auto 25px;
  font-size: 40px;
  animation: 2s infinite pulse;
  display: flex;
  box-shadow: 0 10px 30px #9333ea66;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: .7;
    transform: scale(1.1);
  }
}

.sponsor-modal h2 {
  color: var(--text-color);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-text-fill-color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  margin-bottom: 15px;
  font-size: 1.8rem;
}

.sponsor-modal p {
  color: var(--text-light);
  margin-bottom: 30px;
  font-size: 1rem;
  line-height: 1.6;
}

.sponsor-modal-features {
  text-align: left;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.sponsor-modal-features li {
  color: var(--text-color);
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  font-size: .95rem;
  display: flex;
}

.sponsor-modal-features li i {
  color: var(--primary-color);
  min-width: 24px;
  font-size: 1.2rem;
}

.sponsor-modal-actions {
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  display: flex;
}

.sponsor-modal-btn {
  cursor: pointer;
  border: none;
  border-radius: 25px;
  align-items: center;
  gap: 8px;
  padding: 12px 30px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all .3s;
  display: flex;
}

.sponsor-modal-btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  box-shadow: 0 5px 20px #9333ea66;
}

.sponsor-modal-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px #9333ea99;
}

.sponsor-modal-btn-secondary {
  color: var(--text-light);
  background: none;
  border: 2px solid #9333ea4d;
}

.sponsor-modal-btn-secondary:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
  background: #9333ea1a;
}

@media (width <= 768px) {
  .sponsor-modal-content {
    max-width: 90%;
    padding: 30px 20px;
  }

  .sponsor-modal-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
    font-size: 35px;
  }

  .sponsor-modal h2 {
    font-size: 1.5rem;
  }

  .sponsor-modal p {
    font-size: .9rem;
  }

  .sponsor-modal-features li {
    padding: 10px 0;
    font-size: .9rem;
  }

  .sponsor-modal-actions {
    flex-direction: column;
    width: 100%;
  }

  .sponsor-modal-btn {
    justify-content: center;
    width: 100%;
  }

  .sponsor-modal-close {
    width: 30px;
    height: 30px;
    font-size: 16px;
    top: 10px;
    right: 10px;
  }
}

.comments-section {
  background: var(--bg-light);
  min-height: calc(100vh - 70px);
  padding: 120px 0 100px;
}

.comments-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-top: 20px;
  margin-bottom: 50px;
  font-size: 1.2rem;
}

.comment-form-wrapper {
  box-shadow: var(--shadow);
  background: #fff;
  border-radius: 20px;
  margin-bottom: 60px;
  padding: 40px;
}

.comment-form {
  max-width: 700px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  color: var(--text-color);
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 1rem;
  font-weight: 600;
  display: flex;
}

.form-group label i {
  color: var(--primary-color);
}

.form-group input, .form-group textarea {
  border: 2px solid var(--border-color);
  box-sizing: border-box;
  border-radius: 10px;
  width: 100%;
  padding: 15px;
  font-family: inherit;
  font-size: 1rem;
  transition: all .3s;
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px #6366f11a;
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.submit-btn {
  width: 100%;
  margin-top: 10px;
  padding: 15px;
  font-size: 1.1rem;
}

.submit-btn i {
  margin-right: 8px;
}

.comments-list-wrapper {
  margin-top: 60px;
}

.comments-list-title {
  text-align: center;
  color: var(--text-color);
  margin-bottom: 40px;
  font-size: 2rem;
}

.comments-list-title i {
  color: var(--primary-color);
  margin-right: 10px;
}

.comments-list {
  flex-direction: column;
  gap: 25px;
  display: flex;
}

.comment-item {
  box-shadow: var(--shadow);
  background: #fff;
  border-radius: 20px;
  padding: 30px;
  transition: all .3s;
}

.comment-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.comment-author {
  align-items: center;
  gap: 15px;
  display: flex;
}

.comment-avatar {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  font-size: 1.2rem;
  font-weight: bold;
  display: flex;
}

.comment-info {
  flex-direction: column;
  display: flex;
}

.comment-name {
  color: var(--text-color);
  margin-bottom: 5px;
  font-size: 1.1rem;
  font-weight: 600;
}

.comment-date {
  color: var(--text-light);
  align-items: center;
  gap: 5px;
  font-size: .9rem;
  display: flex;
}

.comment-email {
  color: var(--text-light);
  margin-top: 5px;
  font-size: .85rem;
}

.comment-content {
  color: var(--text-color);
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 1rem;
  line-height: 1.8;
}

.loading-spinner {
  text-align: center;
  color: var(--text-light);
  padding: 60px;
  font-size: 1.1rem;
}

.loading-spinner i {
  color: var(--primary-color);
  margin-bottom: 20px;
  font-size: 2rem;
}

.empty-comments {
  text-align: center;
  color: var(--text-light);
  padding: 60px;
}

.empty-comments i {
  color: var(--border-color);
  margin-bottom: 20px;
  font-size: 4rem;
}

.error-message {
  color: #c33;
  text-align: center;
  background: #fee;
  border-radius: 10px;
  margin-bottom: 20px;
  padding: 15px;
}

.success-message {
  color: #3c3;
  text-align: center;
  background: #efe;
  border-radius: 10px;
  margin-bottom: 20px;
  padding: 15px;
}

.reaction-test-section {
  background: var(--bg-dark);
  background-image: radial-gradient(circle at 20% 30%, #9333ea26 0%, #0000 50%), radial-gradient(circle at 80% 70%, #9333ea26 0%, #0000 50%);
  min-height: calc(100vh - 70px);
  padding: 120px 0 100px;
  position: relative;
}

.test-subtitle {
  text-align: center;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 20px;
  margin-bottom: 50px;
  font-size: 1.2rem;
}

.test-game-container {
  max-width: 800px;
  margin: 0 auto 60px;
}

.test-info-panel {
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
  display: grid;
}

.info-item {
  background: var(--bg-light);
  text-align: center;
  border: 1px solid #9333ea33;
  border-radius: 15px;
  padding: 25px;
  transition: all .3s;
  box-shadow: 0 10px 30px #9333ea1a;
}

.info-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: 0 0 30px #9333ea4d;
}

.info-label {
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  font-size: .9rem;
  display: block;
}

.info-value {
  color: var(--primary-color);
  text-shadow: 0 0 20px #9333ea80;
  margin: 15px 0;
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
  display: block;
}

.info-unit {
  color: var(--text-light);
  margin-top: 5px;
  font-size: .85rem;
  display: block;
}

.test-game-area {
  background: var(--bg-light);
  border: 2px solid #9333ea33;
  border-radius: 30px;
  justify-content: center;
  align-items: center;
  min-height: 300px;
  margin-bottom: 30px;
  padding: 60px 40px;
  transition: all .3s;
  display: flex;
  position: relative;
  box-shadow: 0 20px 60px #9333ea1a;
}

.test-game-area:hover {
  border-color: var(--primary-color);
  box-shadow: 0 0 40px #9333ea4d;
}

.wait-message {
  text-align: center;
  color: var(--text-light);
  z-index: 1;
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
}

.wait-message i {
  color: var(--primary-color);
  margin-bottom: 10px;
  font-size: 2rem;
  display: block;
}

.reaction-button {
  border: 4px solid var(--primary-color);
  cursor: pointer;
  z-index: 2;
  background: var(--bg-light);
  width: 300px;
  height: 300px;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 2px;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 900;
  transition: all .3s;
  position: relative;
  box-shadow: 0 0 40px #9333ea66;
}

.reaction-button.ready {
  background: var(--bg-light);
  border-color: var(--primary-color);
  color: var(--primary-color);
  box-shadow: 0 0 40px #9333ea66;
}

.reaction-button.waiting {
  color: var(--text-light);
  cursor: not-allowed;
  background: #9333ea1a;
  border-color: #9333ea80;
  box-shadow: 0 0 20px #9333ea33;
}

.reaction-button.go {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--bg-dark);
  animation: 1s infinite pulse-button;
  box-shadow: 0 0 60px #9333eacc;
}

.reaction-button.finished {
  background: var(--bg-light);
  border-color: var(--primary-color);
  color: var(--primary-color);
  box-shadow: 0 0 40px #9333ea66;
}

.reaction-button.too-early {
  color: #ef4444;
  background: #ef444433;
  border-color: #ef4444;
  box-shadow: 0 0 40px #ef444466;
}

@keyframes pulse-button {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 60px #9333eacc;
  }

  50% {
    transform: scale(1.05);
    box-shadow: 0 0 80px #9333ea;
  }
}

.reaction-button:hover:not(.waiting) {
  transform: scale(1.05);
  box-shadow: 0 15px 40px #0000004d;
}

.button-text {
  font-size: 1.5rem;
  font-weight: 600;
}

.test-controls {
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
  display: flex;
}

.submit-score-modal {
  z-index: 10000;
  background: #000000b3;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
}

.submit-score-modal .modal-content {
  background: var(--bg-light);
  border: 2px solid #9333ea33;
  border-radius: 20px;
  width: 90%;
  max-width: 500px;
  padding: 40px;
  box-shadow: 0 20px 60px #9333ea33;
}

.submit-score-modal h2 {
  text-align: center;
  color: var(--text-color);
  margin-bottom: 20px;
}

.modal-score {
  text-align: center;
  color: var(--primary-color);
  margin-bottom: 30px;
  font-size: 1.5rem;
  font-weight: bold;
}

.modal-score span {
  font-size: 2rem;
}

.leaderboard-container {
  background: var(--bg-light);
  border: 2px solid #9333ea33;
  border-radius: 20px;
  max-width: 800px;
  margin: 0 auto;
  padding: 40px;
  box-shadow: 0 20px 60px #9333ea1a;
}

.leaderboard-title {
  text-align: center;
  color: var(--text-color);
  margin-bottom: 30px;
  font-size: 2rem;
}

.leaderboard-title i {
  color: gold;
  margin-right: 10px;
}

.leaderboard-tabs {
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
  display: flex;
}

.leaderboard-list {
  min-height: 200px;
}

.leaderboard-item {
  background: var(--bg-light);
  border-radius: 15px;
  align-items: center;
  margin-bottom: 15px;
  padding: 20px;
  transition: all .3s;
  display: flex;
}

.leaderboard-item:hover {
  box-shadow: var(--shadow);
  transform: translateX(5px);
}

.leaderboard-item.top-three {
  background: linear-gradient(135deg, #9333ea33 0%, #9333ea1a 100%);
  border: 2px solid #9333ea80;
}

.leaderboard-section {
  max-width: 1000px;
  margin-top: 60px;
  margin-left: auto;
  margin-right: auto;
}

.leaderboard-list {
  flex-direction: column;
  gap: 12px;
  display: flex;
}

.leaderboard-item {
  background: var(--bg-light);
  border: 1px solid #9333ea1a;
  border-radius: 12px;
  grid-template-columns: 60px 1fr 120px 100px;
  align-items: center;
  gap: 15px;
  padding: 15px 20px;
  transition: all .3s;
  display: grid;
}

.leaderboard-item:hover {
  border-color: var(--primary-color);
  transform: translateX(5px);
  box-shadow: 0 4px 12px #9333ea33;
}

.leaderboard-item.rank-gold {
  background: linear-gradient(135deg, #ffd70033, #ffd7001a);
  border-color: #ffd70080;
}

.leaderboard-item.rank-silver {
  background: linear-gradient(135deg, #c0c0c033, #c0c0c01a);
  border-color: #c0c0c080;
}

.leaderboard-item.rank-bronze {
  background: linear-gradient(135deg, #cd7f3233, #cd7f321a);
  border-color: #cd7f3280;
}

.leaderboard-rank {
  text-align: center;
  color: var(--text-color);
  font-size: 1.2rem;
  font-weight: bold;
}

.leaderboard-name {
  color: var(--text-color);
  word-break: break-word;
  font-size: 1rem;
  font-weight: 600;
}

.leaderboard-score {
  color: var(--primary-color);
  text-align: right;
  font-size: 1.1rem;
  font-weight: bold;
}

.leaderboard-time {
  color: var(--text-light);
  text-align: right;
  font-size: .85rem;
}

.submit-score-modal .modal-header {
  border-bottom: 2px solid var(--border-color);
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  display: flex;
}

.submit-score-modal .modal-header h3 {
  color: var(--text-color);
  margin: 0;
  font-size: 1.5rem;
}

.submit-score-modal .modal-close {
  cursor: pointer;
  width: 35px;
  height: 35px;
  color: var(--text-color);
  background: none;
  border: none;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  font-size: 1.2rem;
  transition: all .3s;
  display: flex;
}

.submit-score-modal .modal-close:hover {
  background: var(--border-color);
  color: var(--primary-color);
  transform: rotate(90deg);
}

.submit-score-modal .modal-body {
  padding-top: 20px;
}

.submit-score-modal .form-actions {
  justify-content: flex-end;
  gap: 15px;
  margin-top: 25px;
  display: flex;
}

.submit-score-modal .form-actions .btn {
  min-width: 100px;
}

.rank-badge {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-radius: 50%;
  flex-shrink: 0;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  margin-right: 20px;
  font-size: 1.2rem;
  font-weight: bold;
  display: flex;
}

.player-info {
  flex: 1;
}

.player-name {
  color: var(--text-color);
  margin-bottom: 5px;
  font-size: 1.1rem;
  font-weight: 600;
}

.score-date {
  color: var(--text-light);
  font-size: .85rem;
}

.score-value {
  color: var(--primary-color);
  text-align: right;
  min-width: 100px;
  font-size: 1.5rem;
  font-weight: bold;
}

.empty-leaderboard {
  text-align: center;
  color: var(--text-light);
  padding: 60px;
}

.empty-leaderboard i {
  color: var(--border-color);
  margin-bottom: 20px;
  font-size: 4rem;
}

.class-wall-section {
  background: var(--bg-dark);
  min-height: calc(100vh - 70px);
  padding: 120px 0 100px;
  position: relative;
  overflow: hidden;
}

.class-wall-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 10%, rgba(147, 51, 234, 0.15) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.class-wall-section .container {
  position: relative;
  z-index: 1;
}

.class-wall-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-top: 20px;
  margin-bottom: 40px;
  font-size: 1.2rem;
  font-weight: 500;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.class-function-tabs {
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
  display: flex;
}

.function-tab {
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  color: var(--text-color);
  background: rgba(30, 27, 46, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 30px;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  transition: all .4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.function-tab:hover {
  border-color: rgba(147, 51, 234, 0.4);
  color: var(--primary-light);
  background: rgba(147, 51, 234, 0.1);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(147, 51, 234, 0.2);
}

.function-tab.active {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 25px rgba(147, 51, 234, 0.4);
}

.function-tab i {
  font-size: 1.1rem;
}

.class-photos-gallery, .class-music-gallery, .class-ranking-gallery {
  animation: .5s fadeIn;
}

.music-list {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

.ranking-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

.ranking-header {
  text-align: center;
  margin-bottom: 30px;
}

.ranking-title {
  color: var(--text-color);
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 2rem;
  display: flex;
}

.ranking-title i {
  color: #ff6b6b;
  animation: 2s infinite pulse;
}

.ranking-subtitle {
  color: var(--text-light);
  font-size: 1rem;
}

.ranking-user-status {
  background: #9333ea1a;
  border: 1px solid #9333ea33;
  border-radius: 10px;
  margin-top: 15px;
  padding: 12px 20px;
}

.user-status-info {
  color: var(--text-color);
  justify-content: center;
  align-items: center;
  gap: 10px;
  font-size: .95rem;
  display: flex;
}

.user-status-info i {
  color: var(--primary-color);
}

.user-status-info.limit-reached i {
  color: #ff6b6b;
}

.user-status-info strong {
  color: var(--primary-color);
  font-weight: 600;
}

.user-status-info.limit-reached strong {
  color: #ff6b6b;
}

.ranking-tabs {
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-bottom: 30px;
  display: flex;
}

.ranking-tab {
  background: var(--bg-light);
  border: 2px solid var(--border-color);
  cursor: pointer;
  color: var(--text-color);
  border-radius: 25px;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: .95rem;
  font-weight: 500;
  transition: all .3s;
  display: flex;
}

.ranking-tab:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px #9333ea33;
}

.ranking-tab.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
  box-shadow: 0 4px 15px #9333ea66;
}

.ranking-list {
  flex-direction: column;
  gap: 15px;
  display: flex;
}

.ranking-item {
  background: var(--bg-light);
  box-shadow: var(--shadow);
  border-radius: 15px;
  align-items: center;
  gap: 20px;
  padding: 20px;
  transition: all .3s;
  display: flex;
  position: relative;
  overflow: hidden;
}

.ranking-item:before {
  content: "";
  background: var(--primary-color);
  opacity: 0;
  width: 4px;
  transition: opacity .3s;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
}

.ranking-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateX(5px);
}

.ranking-item:hover:before {
  opacity: 1;
}

.ranking-item.gold {
  background: linear-gradient(135deg, #ffd7001a, var(--bg-light));
  border: 2px solid #ffd7004d;
}

.ranking-item.silver {
  background: linear-gradient(135deg, #c0c0c01a, var(--bg-light));
  border: 2px solid #c0c0c04d;
}

.ranking-item.bronze {
  background: linear-gradient(135deg, #cd7f321a, var(--bg-light));
  border: 2px solid #cd7f324d;
}

.ranking-item.visited {
  opacity: .8;
}

.ranking-item.visited .ranking-avatar {
  background: linear-gradient(135deg, #4caf50, #45a049);
}

.visited-badge {
  color: #4caf50;
  background: #4caf5033;
  border: 1px solid #4caf5066;
  border-radius: 12px;
  margin-left: 8px;
  padding: 4px 10px;
  font-size: .75rem;
  font-weight: 500;
  display: inline-block;
}

.visited-badge i {
  margin-right: 4px;
}

.ranking-rank {
  text-align: center;
  min-width: 60px;
  color: var(--primary-color);
  font-size: 1.5rem;
  font-weight: 700;
}

.ranking-medal {
  font-size: 2rem;
  display: block;
}

.ranking-number {
  color: var(--text-light);
  font-size: 1.8rem;
  display: block;
}

.ranking-avatar {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-radius: 50%;
  flex-shrink: 0;
  justify-content: center;
  align-items: center;
  width: 60px;
  height: 60px;
  font-size: 1.5rem;
  display: flex;
  box-shadow: 0 4px 15px #9333ea4d;
}

.ranking-info {
  flex: 1;
  min-width: 0;
}

.ranking-name {
  color: var(--text-color);
  margin-bottom: 5px;
  font-size: 1.3rem;
  font-weight: 600;
}

.ranking-type {
  color: var(--text-light);
  background: #9333ea1a;
  border-radius: 12px;
  padding: 4px 12px;
  font-size: .9rem;
  display: inline-block;
}

.ranking-stats {
  text-align: right;
  min-width: 100px;
}

.ranking-visits {
  color: #ff6b6b;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
}

.ranking-visits i {
  animation: 2s infinite pulse;
}

.ranking-label {
  color: var(--text-light);
  font-size: .85rem;
}

.ranking-error {
  text-align: center;
  color: var(--text-light);
  padding: 60px 20px;
}

.ranking-error i {
  color: #ff6b6b;
  margin-bottom: 20px;
  font-size: 3rem;
  display: block;
}

.ranking-error p {
  color: var(--text-color);
  margin: 0;
  font-size: 1.1rem;
}

.ranking-empty {
  text-align: center;
  color: var(--text-light);
  padding: 60px 20px;
}

.ranking-empty i {
  color: var(--border-color);
  margin-bottom: 20px;
  font-size: 4rem;
}

.ranking-empty p {
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.ranking-empty-hint {
  opacity: .7;
  color: var(--text-light) !important;
  font-size: .9rem !important;
}

.music-item {
  margin-bottom: 20px;
  animation: .5s fadeIn;
}

.music-card {
  background: var(--bg-light);
  box-shadow: var(--shadow);
  border-radius: 15px;
  align-items: center;
  gap: 20px;
  padding: 20px;
  transition: all .3s;
  display: flex;
}

.music-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.music-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-radius: 12px;
  flex-shrink: 0;
  justify-content: center;
  align-items: center;
  width: 60px;
  height: 60px;
  font-size: 1.5rem;
  display: flex;
}

.music-info {
  flex: 1;
  min-width: 0;
}

.music-title {
  color: var(--text-color);
  word-break: break-word;
  margin-bottom: 10px;
  font-size: 1.2rem;
  font-weight: 600;
}

.music-player {
  outline: none;
  width: 100%;
  height: 40px;
}

.music-player::-webkit-media-controls-panel {
  background-color: #9333ea1a;
}

.music-player::-webkit-media-controls-play-button {
  background-color: var(--primary-color);
  border-radius: 50%;
}

.empty-message {
  text-align: center;
  color: var(--text-light);
  padding: 60px 20px;
}

.empty-message i {
  color: var(--border-color);
  margin-bottom: 20px;
  font-size: 4rem;
}

.empty-message p {
  font-size: 1.2rem;
}

.class-wall-grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
}

.class-wall-item {
  aspect-ratio: 1;
  min-height: 280px;
  box-shadow: var(--shadow);
  cursor: pointer;
  aspect-ratio: 1;
  background: #fff;
  border-radius: 15px;
  transition: all .3s;
  position: relative;
  overflow: hidden;
}

.class-wall-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}

.class-wall-image-wrapper {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.class-wall-placeholder {
  backdrop-filter: blur(5px);
  z-index: 3;
  background: linear-gradient(135deg, #9333ea26, #a855f714);
  border-radius: 15px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  transition: opacity .3s;
  display: flex;
  position: absolute;
  top: 0;
  left: 0;
}

.class-wall-placeholder i {
  color: var(--primary-color);
  filter: drop-shadow(0 0 8px var(--primary-color));
  font-size: 2.5rem;
  animation: 1s linear infinite spin, 2s ease-in-out infinite glow;
}

@keyframes glow {
  0%, 100% {
    filter: drop-shadow(0 0 8px var(--primary-color));
  }

  50% {
    filter: drop-shadow(0 0 15px var(--primary-color));
  }
}

.class-wall-placeholder p {
  color: var(--text-light);
  margin: 0;
  font-size: .9rem;
}

@keyframes spin {
  from {
    transform: rotate(0);
  }

  to {
    transform: rotate(360deg);
  }
}

.class-wall-image {
  object-fit: cover;
  object-position: center;
  opacity: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  transition: opacity .5s, transform .5s cubic-bezier(.34, 1.56, .64, 1), filter .5s;
  position: relative;
}

.class-wall-item:hover .class-wall-image {
  transform: scale(1.1);
}

.class-wall-video {
  object-fit: cover;
  opacity: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  transition: opacity .3s, transform .3s;
  position: relative;
}

.class-wall-item:hover .class-wall-video {
  transform: scale(1.1);
}

.video-thumbnail {
  z-index: 2;
  object-fit: cover;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  width: 100%;
  height: 100%;
  transition: opacity .3s, transform .3s;
  position: absolute;
  top: 0;
  left: 0;
}

.video-play-icon {
  z-index: 3;
  opacity: .8;
  pointer-events: none;
  background: #0009;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 60px;
  height: 60px;
  transition: all .3s;
  display: flex;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.video-play-icon i {
  color: #fff;
  margin-left: 3px;
  font-size: 24px;
}

.class-wall-item:hover .video-play-icon {
  opacity: 1;
  background: #000c;
  transform: translate(-50%, -50%) scale(1.1);
}

.comment-btn {
  color: #fff;
  cursor: pointer;
  z-index: 10;
  opacity: 0;
  background: #000000b3;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  transition: all .3s;
  display: flex;
  position: absolute;
  bottom: 10px;
  right: 10px;
  transform: scale(.8);
}

.class-wall-item:hover .comment-btn {
  opacity: 1;
  transform: scale(1);
}

@media (width <= 768px) {
  .comment-btn {
    opacity: 1;
    width: 36px;
    height: 36px;
    bottom: 8px;
    right: 8px;
    transform: scale(1);
  }

  .comment-btn i {
    font-size: 14px;
  }

  .comment-btn:active {
    background: var(--primary-color);
    transform: scale(.95);
  }
}

.comment-btn:hover {
  background: var(--primary-color);
  transform: scale(1.1);
}

.comment-btn i {
  font-size: 16px;
}

.class-wall-lightbox {
  z-index: 10000;
  background: #000000f2;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  display: none;
  position: fixed;
  top: 0;
  left: 0;
}

.class-wall-lightbox .lightbox-content {
  justify-content: center;
  align-items: center;
  max-width: 90%;
  max-height: 90%;
  display: flex;
  position: relative;
}

.class-wall-lightbox .lightbox-image {
  object-fit: contain;
  border-radius: 10px;
  max-width: 100%;
  max-height: 90vh;
  transition: opacity .3s;
  box-shadow: 0 20px 60px #00000080;
}

.class-wall-lightbox .lightbox-video {
  background: #000;
  border-radius: 10px;
  max-width: 100%;
  max-height: 90vh;
  transition: opacity .3s;
  display: block;
  box-shadow: 0 20px 60px #00000080;
}

.class-wall-lightbox .lightbox-close {
  color: #fff;
  cursor: pointer;
  z-index: 10001;
  background: #fff3;
  border: 2px solid #fff;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  font-size: 20px;
  transition: all .3s;
  display: flex;
  position: absolute;
  top: -50px;
  right: 0;
}

.class-wall-lightbox .lightbox-close:hover {
  background: var(--bg-light);
  color: var(--text-color);
  transform: rotate(90deg);
}

.class-wall-lightbox .lightbox-prev, .class-wall-lightbox .lightbox-next {
  color: #fff;
  cursor: pointer;
  z-index: 10001;
  background: #fff3;
  border: 2px solid #fff;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  font-size: 24px;
  transition: all .3s;
  display: flex;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.class-wall-lightbox .lightbox-prev {
  left: -70px;
}

.class-wall-lightbox .lightbox-next {
  right: -70px;
}

.class-wall-lightbox .lightbox-prev:hover, .class-wall-lightbox .lightbox-next:hover {
  background: var(--bg-light);
  color: var(--text-color);
  transform: translateY(-50%) scale(1.1);
}

.class-wall-lightbox .lightbox-info {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  position: absolute;
  bottom: -50px;
  left: 50%;
  transform: translateX(-50%);
}

.class-wall-lightbox .lightbox-counter {
  background: #00000080;
  border-radius: 20px;
  padding: 8px 20px;
}

.comment-modal {
  z-index: 10002;
  background: #000c;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  padding: 20px;
  animation: .3s fadeIn;
  display: none;
  position: fixed;
  top: 0;
  left: 0;
}

.comment-modal-content {
  background: var(--bg-light);
  border-radius: 20px;
  flex-direction: column;
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  display: flex;
  overflow: hidden;
  box-shadow: 0 20px 60px #0000004d;
}

.comment-modal-header {
  border-bottom: 2px solid var(--border-color);
  background: var(--bg-light);
  justify-content: space-between;
  align-items: center;
  padding: 20px 30px;
  display: flex;
}

.comment-modal-header h3 {
  color: var(--text-color);
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.comment-modal-close {
  cursor: pointer;
  width: 35px;
  height: 35px;
  color: var(--text-color);
  background: none;
  border: none;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  font-size: 1.2rem;
  transition: all .3s;
  display: flex;
}

.comment-modal-close:hover {
  background: var(--border-color);
  color: var(--primary-color);
  transform: rotate(90deg);
}

.comment-modal-body {
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 0;
  display: flex;
  position: relative;
  overflow-y: auto;
}

.comment-media-preview {
  background: var(--bg-light);
  z-index: 10;
  border-radius: 0;
  flex-shrink: 0;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 250px;
  min-height: 250px;
  max-height: 250px;
  display: flex;
  position: sticky;
  top: 0;
  overflow: hidden;
  box-shadow: 0 4px 12px #0000001a;
}

.comment-media-preview-img, .comment-media-preview-video {
  object-fit: cover;
  object-position: center;
  width: 100%;
  height: 100%;
}

.comment-list {
  flex-direction: column;
  gap: 15px;
  padding: 20px 10px 20px 30px;
  display: flex;
}

.comment-list::-webkit-scrollbar {
  width: 6px;
}

.comment-list::-webkit-scrollbar-track {
  background: var(--bg-light);
  border-radius: 10px;
}

.comment-list::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 10px;
}

.comment-list::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

.comment-item {
  background: var(--bg-light);
  border-left: 3px solid var(--primary-color);
  border-radius: 10px;
  padding: 15px;
  animation: .3s fadeIn;
}

.comment-header {
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  display: flex;
}

.comment-author {
  color: var(--text-color);
  font-size: 1rem;
  font-weight: 600;
}

.comment-time {
  color: var(--text-light);
  font-size: .85rem;
}

.comment-body {
  color: var(--text-color);
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: .95rem;
  line-height: 1.6;
}

.comment-form-toggle {
  border-top: 2px solid var(--border-color);
  text-align: center;
  background: var(--bg-light);
  padding: 20px 30px;
}

.comment-form-toggle .btn {
  width: 100%;
  max-width: 300px;
}

.comment-form-header {
  border-bottom: 1px solid var(--border-color);
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  padding-bottom: 15px;
  display: flex;
}

.comment-form-header h4 {
  color: var(--text-color);
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
}

.comment-form-close {
  color: var(--text-light);
  cursor: pointer;
  background: none;
  border: none;
  border-radius: 5px;
  justify-content: center;
  align-items: center;
  padding: 5px 10px;
  font-size: 1.2rem;
  transition: all .3s;
  display: flex;
}

.comment-form-close:hover {
  background: var(--bg-light);
  color: var(--text-color);
}

.comment-form {
  border-top: 2px solid var(--border-color);
  background: var(--bg-light);
  flex-direction: column;
  gap: 15px;
  padding: 20px 30px;
  display: flex;
}

.comment-author-input {
  border: 2px solid var(--border-color);
  box-sizing: border-box;
  background: var(--bg-dark);
  width: 100%;
  color: var(--text-color);
  border-radius: 10px;
  padding: 12px 15px;
  font-family: inherit;
  font-size: 1rem;
  transition: all .3s;
}

.comment-author-input:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px #9333ea1a;
}

.comment-author-input::placeholder {
  color: var(--text-light);
}

.comment-textarea {
  border: 2px solid var(--border-color);
  resize: vertical;
  box-sizing: border-box;
  background: var(--bg-dark);
  width: 100%;
  min-height: 100px;
  color: var(--text-color);
  border-radius: 10px;
  padding: 12px 15px;
  font-family: inherit;
  font-size: 1rem;
  transition: all .3s;
}

.comment-textarea:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px #9333ea1a;
}

.comment-form-actions {
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  display: flex;
}

.comment-char-count {
  color: var(--text-light);
  font-size: .85rem;
}

.comment-char-count span {
  font-weight: 600;
}

#submitCommentBtn {
  white-space: nowrap;
  padding: 12px 24px;
  font-size: 1rem;
}

.comment-empty, .comment-error {
  text-align: center;
  color: var(--text-light);
  padding: 40px 20px;
}

.comment-empty i {
  color: var(--border-color);
  margin-bottom: 15px;
  font-size: 3rem;
  display: block;
}

.comment-error {
  color: #f44;
  background: #fee;
  border-radius: 10px;
  padding: 15px;
}

.comment-success-msg {
  color: #3c3;
  text-align: center;
  background: #efe;
  border-radius: 10px;
  margin-bottom: 15px;
  padding: 12px 20px;
  animation: .3s fadeIn;
}

.comment-actions {
  border-top: 1px solid var(--border-color);
  gap: 15px;
  margin-top: 12px;
  padding-top: 12px;
  display: flex;
}

.comment-action-btn {
  color: var(--text-light);
  cursor: pointer;
  background: none;
  border: none;
  border-radius: 6px;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: .9rem;
  transition: all .3s;
  display: flex;
}

.comment-action-btn:hover {
  background: var(--bg-light);
  color: var(--text-color);
}

.comment-like-btn.liked, .comment-like-btn.liked i {
  color: #f44;
}

.comment-reply-btn:hover {
  color: var(--primary-color);
}

.comment-reply-btn i, .comment-like-btn i {
  font-size: .85rem;
}

.like-count {
  font-weight: 600;
}

.comment-replies {
  border-left: 2px solid var(--border-color);
  margin-top: 15px;
  padding-left: 20px;
}

.comment-reply-item {
  background: var(--bg-light);
  border-left: 2px solid var(--primary-color);
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 12px 15px;
}

.comment-reply-header {
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  display: flex;
}

.comment-reply-author {
  color: var(--text-color);
  font-size: .9rem;
  font-weight: 600;
}

.comment-reply-time {
  color: var(--text-light);
  font-size: .8rem;
}

.comment-reply-body {
  color: var(--text-color);
  white-space: pre-wrap;
  word-wrap: break-word;
  margin-bottom: 8px;
  font-size: .9rem;
  line-height: 1.5;
}

.comment-reply-actions {
  gap: 10px;
  margin-top: 8px;
  display: flex;
}

.comment-reply-form-container {
  border-top: 1px solid var(--border-color);
  margin-top: 15px;
  padding-top: 15px;
}

.comment-reply-form {
  flex-direction: column;
  gap: 10px;
  display: flex;
}

.comment-reply-input, .comment-reply-author-input {
  border: 2px solid var(--border-color);
  box-sizing: border-box;
  border-radius: 8px;
  width: 100%;
  padding: 10px 12px;
  font-family: inherit;
  font-size: .9rem;
  transition: all .3s;
}

.comment-reply-input:focus, .comment-reply-author-input:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px #9333ea1a;
}

.comment-reply-input {
  resize: vertical;
  min-height: 80px;
}

.comment-reply-author-input {
  max-width: 200px;
}

.comment-reply-form-actions {
  align-items: center;
  gap: 10px;
  display: flex;
}

.comment-reply-form-actions .btn-sm {
  padding: 8px 16px;
  font-size: .9rem;
}

.messages-list-section {
  box-shadow: var(--shadow);
  background: linear-gradient(#0e0e0eeb, #080808fa);
  border: 1px solid #9333ea4d;
  border-radius: 20px;
  margin-top: 60px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.messages-list-section:before {
  content: "";
  opacity: .6;
  pointer-events: none;
  background: radial-gradient(circle at 15% 20%, #9333ea24, #0000 45%), radial-gradient(circle at 85% 80%, #ec48991a, #0000 45%);
  position: absolute;
  inset: 0;
}

.messages-list-section:after {
  content: "";
  opacity: .18;
  pointer-events: none;
  background-image: linear-gradient(#0000 95%, #9333ea14 100%), linear-gradient(90deg, #0000 95%, #9333ea14 100%);
  background-size: 36px 36px;
  position: absolute;
  inset: 0;
}

.messages-list-section h3 {
  color: var(--text-color);
  text-align: center;
  margin-bottom: 30px;
  font-size: 1.8rem;
  font-weight: 700;
}

.messages-list-section h3:after {
  content: "";
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
  width: 60px;
  height: 3px;
  margin: 15px auto 0;
  display: block;
}

.messages-list {
  scrollbar-color: #9333ea66 #0a0a0a99;
  z-index: 1;
  flex-direction: column;
  gap: 20px;
  max-height: 680px;
  padding-right: 10px;
  display: flex;
  position: relative;
  overflow-y: auto;
}

.messages-list:before, .messages-list:after {
  content: "";
  pointer-events: none;
  z-index: 2;
  height: 22px;
  display: block;
  position: sticky;
  left: 0;
  right: 0;
}

.messages-list:before {
  background: linear-gradient(#0a0a0ae6, #0000);
  top: 0;
}

.messages-list:after {
  background: linear-gradient(0deg, #0a0a0ae6, #0000);
  bottom: 0;
}

.messages-list::-webkit-scrollbar {
  width: 6px;
}

.messages-list::-webkit-scrollbar-track {
  background: var(--bg-color);
  border-radius: 10px;
}

.messages-list::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 10px;
}

.messages-list::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

.message-item {
  background: var(--bg-light);
  box-shadow: var(--shadow);
  border-left: 3px solid var(--primary-color);
  border: 1px solid #9333ea2e;
  border-radius: 15px;
  padding: 20px;
  transition: transform .3s, box-shadow .3s, border-color .3s;
  animation: .4s messageFloatIn;
  position: relative;
}

.message-item.is-pinned {
  border-left-color: #f59e0b;
  box-shadow: 0 16px 40px #f59e0b33;
}

.message-item.is-highlighted {
  border-color: #ec489973;
  box-shadow: 0 16px 36px #ec489933;
}

.message-badge {
  letter-spacing: .5px;
  color: #fbbf24;
  background: #f59e0b29;
  border: 1px solid #f59e0b4d;
  border-radius: 999px;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: .75rem;
  font-weight: 600;
  display: inline-flex;
}

.message-badge.highlight {
  color: #f472b6;
  background: #ec489929;
  border-color: #ec48994d;
}

.message-item:hover {
  box-shadow: var(--shadow-lg);
  border-color: #9333ea73;
  transform: translateY(-3px);
}

.message-item:before {
  content: "";
  opacity: .8;
  background: radial-gradient(circle, #a855f7cc, #0000 70%);
  border-radius: 50%;
  width: 8px;
  height: 8px;
  position: absolute;
  top: 12px;
  right: 12px;
}

.message-item:after {
  content: "";
  -webkit-mask-composite: xor;
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(120deg, #a855f733, #0000 45%, #ec489933) border-box;
  border: 1px solid #0000;
  border-radius: 14px;
  transition: opacity .3s;
  position: absolute;
  inset: 1px;
  -webkit-mask-image: linear-gradient(#fff 0 0), linear-gradient(#fff 0 0);
  -webkit-mask-position: 0 0, 0 0;
  -webkit-mask-size: auto, auto;
  -webkit-mask-repeat: repeat, repeat;
  -webkit-mask-clip: padding-box, border-box;
  -webkit-mask-origin: padding-box, border-box;
  mask-composite: exclude;
  mask-mode: match-source, match-source;
}

.message-item:hover:after {
  opacity: 1;
}

.message-header {
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  display: flex;
}

.message-avatar {
  color: #fff;
  background: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
  border-radius: 50%;
  flex-shrink: 0;
  justify-content: center;
  align-items: center;
  width: 42px;
  height: 42px;
  font-weight: 700;
  transition: transform .3s, box-shadow .3s;
  display: inline-flex;
  box-shadow: 0 8px 18px #7c3aed40;
}

.message-item:hover .message-avatar {
  transform: scale(1.06);
  box-shadow: 0 10px 22px #7c3aed59;
}

.message-avatar-sm {
  width: 30px;
  height: 30px;
  font-size: .75rem;
}

.message-meta {
  flex-direction: column;
  gap: 2px;
  display: flex;
}

.message-meta-row {
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  display: flex;
}

.message-author {
  color: var(--text-color);
  font-size: 1rem;
  font-weight: 600;
}

.message-time {
  color: var(--text-light);
  font-size: .85rem;
}

.message-body {
  color: var(--text-color);
  white-space: pre-wrap;
  word-wrap: break-word;
  background: #9333ea14;
  border: 1px solid #9333ea2e;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: .95rem;
  line-height: 1.6;
}

.message-empty, .message-error {
  text-align: center;
  color: var(--text-light);
  padding: 40px 20px;
}

.message-empty i {
  color: var(--border-color);
  margin-bottom: 15px;
  font-size: 3rem;
  animation: 2.8s ease-in-out infinite emptyPulse;
  display: block;
}

.message-error {
  color: #f44;
  background: #fee;
  border-radius: 10px;
  padding: 15px;
}

.message-empty {
  background: #9333ea0f;
  border: 1px dashed #9333ea40;
  border-radius: 14px;
}

.message-empty p {
  max-width: 320px;
  margin: 0 auto;
}

.message-date-divider {
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  align-items: center;
  gap: 12px;
  margin: 12px 0 4px;
  font-size: .85rem;
  animation: .4s dividerIn;
  display: flex;
}

.message-date-divider:before, .message-date-divider:after {
  content: "";
  background: linear-gradient(90deg, #0000, #9333ea66, #0000);
  flex: 1;
  height: 1px;
}

.message-date-divider span {
  background: #0a0a0ab3;
  border: 1px solid #9333ea40;
  border-radius: 999px;
  padding: 6px 12px;
}

.messages-list-section .loading-spinner {
  background: #9333ea0d;
  border: 1px dashed #9333ea4d;
  border-radius: 16px;
}

.messages-list-section .loading-spinner i {
  text-shadow: 0 0 18px #9333ea80;
}

.message-skeleton {
  background: #9333ea0f;
  border: 1px solid #9333ea1f;
  border-radius: 14px;
  gap: 10px;
  padding: 18px;
  display: grid;
  position: relative;
  overflow: hidden;
}

.message-skeleton:after {
  content: "";
  background: linear-gradient(120deg, #0000, #ffffff14, #0000);
  animation: 1.6s infinite skeletonShimmer;
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
}

.skeleton-row {
  align-items: center;
  gap: 12px;
  display: flex;
}

.skeleton-avatar {
  background: #9333ea33;
  border-radius: 50%;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
}

.skeleton-line {
  background: #9333ea29;
  border-radius: 999px;
  height: 10px;
}

.skeleton-line.long {
  width: 80%;
}

.skeleton-line.medium {
  width: 55%;
}

.skeleton-line.short {
  width: 30%;
}

.message-actions {
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  align-items: center;
  gap: 15px;
  margin-top: 12px;
  padding-top: 12px;
  display: flex;
}

.message-action-btn {
  color: var(--text-light);
  cursor: pointer;
  background: none;
  border: none;
  border-radius: 6px;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: .9rem;
  transition: all .3s;
  display: flex;
  position: relative;
  overflow: hidden;
}

.message-action-btn:after {
  content: "";
  opacity: 0;
  pointer-events: none;
  background: radial-gradient(circle at 30% 30%, #9333ea33, #0000 55%);
  transition: opacity .3s;
  position: absolute;
  inset: 0;
}

.message-action-btn:disabled {
  opacity: .6;
  cursor: not-allowed;
}

.message-action-btn:hover {
  background: var(--bg-light);
  color: var(--text-color);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px #0003;
}

.message-action-btn:hover:after {
  opacity: 1;
}

.message-like-btn.liked, .message-like-btn.liked i {
  color: #f44;
}

.message-like-btn.liked i {
  animation: .3s messageLikePop;
}

.like-count {
  font-weight: 600;
  transition: transform .2s;
}

.like-count.like-bump {
  animation: .28s likeBump;
}

.message-reply-btn:hover {
  color: var(--primary-color);
}

.message-reply-btn i, .message-like-btn i {
  font-size: .85rem;
}

.message-replies {
  border-left: 2px solid var(--border-color);
  opacity: 1;
  max-height: 900px;
  margin-top: 15px;
  padding-left: 20px;
  transition: max-height .3s, opacity .3s, transform .3s;
  position: relative;
  overflow: hidden;
  transform: translateY(0);
}

.message-replies:before {
  content: "";
  background: linear-gradient(#9333ea80, #0000);
  width: 2px;
  position: absolute;
  top: 0;
  bottom: 0;
  left: -2px;
}

.message-replies.is-collapsed {
  opacity: 0;
  max-height: 0;
  transform: translateY(-6px);
}

.message-replies-toggle {
  color: var(--text-light);
  background: #9333ea14;
  border: 1px solid #9333ea59;
}

.message-replies-toggle:hover {
  color: var(--text-color);
}

.message-reply-item {
  background: var(--bg-light);
  border-left: 2px solid var(--primary-color);
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 12px 15px;
  transition: transform .3s, box-shadow .3s;
  animation: .3s messageFloatIn;
  box-shadow: 0 6px 14px #0000000f;
}

.message-reply-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 18px #00000029;
}

.message-reply-header {
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  display: flex;
}

.message-reply-author {
  color: var(--text-color);
  font-size: .9rem;
  font-weight: 600;
}

.message-reply-time {
  color: var(--text-light);
  font-size: .8rem;
}

.message-reply-body {
  color: var(--text-color);
  white-space: pre-wrap;
  word-wrap: break-word;
  background: #9333ea0d;
  border: 1px solid #9333ea1a;
  border-radius: 10px;
  margin-bottom: 8px;
  padding: 10px 12px;
  font-size: .9rem;
  line-height: 1.5;
}

.message-reply-actions {
  gap: 10px;
  margin-top: 8px;
  display: flex;
}

.message-reply-form-container {
  border-top: 1px solid var(--border-color);
  opacity: 0;
  max-height: 0;
  margin-top: 15px;
  padding-top: 0;
  transition: max-height .3s, opacity .3s, transform .3s;
  overflow: hidden;
  transform: translateY(-6px);
}

.message-reply-form-container.is-open {
  opacity: 1;
  max-height: 320px;
  padding-top: 15px;
  transform: translateY(0);
}

.message-reply-form {
  flex-direction: column;
  gap: 10px;
  display: flex;
}

.message-reply-input, .message-reply-author-input {
  border: 2px solid var(--border-color);
  box-sizing: border-box;
  border-radius: 8px;
  width: 100%;
  padding: 10px 12px;
  font-family: inherit;
  font-size: .9rem;
  transition: all .3s;
}

.message-reply-input:focus, .message-reply-author-input:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px #9333ea1a;
}

.message-reply-input {
  resize: vertical;
  min-height: 80px;
}

.message-reply-author-input {
  max-width: 200px;
}

.message-reply-form-actions {
  align-items: center;
  gap: 10px;
  display: flex;
}

.message-reply-form-actions .btn-sm {
  padding: 8px 16px;
  font-size: .9rem;
}

@keyframes messageFloatIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes messageGlow {
  0% {
    box-shadow: 0 10px 24px #9333ea38;
  }

  50% {
    box-shadow: 0 16px 34px #9333ea66;
  }

  100% {
    box-shadow: 0 10px 24px #9333ea38;
  }
}

@keyframes likeBump {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.2);
  }

  100% {
    transform: scale(1);
  }
}

@keyframes emptyPulse {
  0% {
    opacity: .7;
    transform: translateY(0);
  }

  50% {
    opacity: 1;
    transform: translateY(-6px);
  }

  100% {
    opacity: .7;
    transform: translateY(0);
  }
}

@keyframes dividerIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes skeletonShimmer {
  0% {
    transform: translateX(-100%);
  }

  100% {
    transform: translateX(100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .contact-message-form, .message-item, .message-reply-item, .message-reply-form-container {
    transition: none !important;
    animation: none !important;
  }
}

@keyframes messageLikePop {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.25);
  }

  100% {
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .message-item, .message-like-btn.liked i, .contact-message-form, .message-reply-form-container, .message-form-toggle .btn, .submit-message-btn, .message-empty i, .message-date-divider, .message-skeleton:after {
    transition: none !important;
    animation: none !important;
  }
}

@media (width <= 768px) {
  .comment-modal-content {
    max-width: 95%;
    max-height: 95vh;
  }

  .comment-modal-header {
    padding: 15px 20px;
  }

  .comment-modal-header h3 {
    font-size: 1.2rem;
  }

  .comment-modal-body {
    padding: 0;
  }

  .comment-media-preview {
    height: 200px;
    min-height: 200px;
    max-height: 200px;
  }

  .comment-list, .comment-form-toggle, .comment-form {
    padding: 15px 20px;
  }

  .comment-form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  #submitCommentBtn {
    width: 100%;
  }

  .comment-char-count {
    text-align: center;
  }

  .messages-list-section {
    padding: 25px 20px;
  }

  .message-item {
    padding: 15px;
  }

  .message-actions {
    flex-wrap: wrap;
    gap: 10px;
  }

  .message-avatar {
    width: 36px;
    height: 36px;
    font-size: .9rem;
  }

  .message-avatar-sm {
    width: 26px;
    height: 26px;
  }

  .message-date-divider {
    letter-spacing: 1px;
    font-size: .75rem;
  }
}

.classroom-seating {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

.podium-container {
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
  margin-bottom: 50px;
  display: flex;
}

.podium-label {
  color: var(--primary-color);
  text-align: center;
  background: #fff;
  border-radius: 25px;
  padding: 10px 30px;
  font-size: 1.5rem;
  font-weight: 600;
  box-shadow: 0 2px 8px #0000001a;
}

.teachers-row {
  flex-flow: wrap;
  justify-content: center;
  align-items: center;
  gap: 20px;
  display: flex;
}

.teacher-avatar {
  cursor: pointer;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  border-radius: 50%;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100px;
  height: 100px;
  transition: all .3s;
  display: flex;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px #0003;
}

.teacher-avatar:before {
  content: "";
  pointer-events: none;
  background: linear-gradient(135deg, #ffffff1a 0%, #ffffff0d 100%);
  position: absolute;
  inset: 0;
}

.teacher-avatar:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 8px 25px #0000004d;
}

.teacher-name {
  color: #fff;
  text-align: center;
  z-index: 1;
  word-break: break-all;
  padding: 5px;
  font-size: .9rem;
  font-weight: 600;
  line-height: 1.2;
}

.seating-container {
  flex-flow: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 30px;
  display: flex;
}

.seating-group {
  flex-direction: column;
  flex: none;
  align-items: center;
  gap: 15px;
  min-width: 140px;
  display: flex;
}

.group-label {
  color: var(--primary-color);
  text-align: center;
  background: #fff;
  border-radius: 25px;
  min-width: 120px;
  padding: 8px 20px;
  font-size: 1.3rem;
  font-weight: 600;
  box-shadow: 0 2px 8px #0000001a;
}

.seats-row {
  flex-direction: column;
  align-items: center;
  gap: 15px;
  width: 100%;
  display: flex;
}

.seat {
  cursor: pointer;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 12px;
  justify-content: center;
  align-items: center;
  width: 120px;
  height: 120px;
  transition: all .3s;
  display: flex;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px #0003;
}

.seat:before {
  content: "";
  pointer-events: none;
  background: linear-gradient(135deg, #ffffff1a 0%, #ffffff0d 100%);
  position: absolute;
  inset: 0;
}

.seat:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 8px 25px #0000004d;
}

.seat-name {
  color: #fff;
  text-align: center;
  z-index: 1;
  word-break: break-all;
  padding: 10px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
}

@media (width <= 768px) {
  .sponsor-section, .comments-section, .reaction-test-section, .class-wall-section {
    padding: 100px 0 60px;
  }

  .sponsor-subtitle, .comments-subtitle {
    margin-bottom: 30px;
    font-size: 1.1rem;
  }

  .sponsor-image-wrapper {
    margin: 30px 0;
  }

  .sponsor-card {
    padding: 30px 20px;
  }

  .sponsor-features li {
    padding: 15px;
    font-size: .95rem;
  }

  .sponsor-actions {
    margin-top: 20px;
  }

  .btn-contact {
    justify-content: center;
    width: 100%;
  }

  .comment-form-wrapper {
    padding: 30px 20px;
  }

  .comment-item {
    padding: 20px;
  }

  .comment-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (width <= 480px) {
  .sponsor-section, .comments-section {
    padding: 80px 0 50px;
  }

  .sponsor-card {
    padding: 25px 15px;
  }

  .sponsor-features li {
    padding: 12px;
    font-size: .9rem;
  }

  .comment-form-wrapper {
    padding: 25px 15px;
  }

  .form-group input, .form-group textarea {
    padding: 12px;
    font-size: .95rem;
  }

  .test-info-panel {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .info-value {
    font-size: 1.5rem;
  }

  .test-game-area {
    min-height: 250px;
    padding: 40px 20px;
  }

  .reaction-button {
    width: 200px;
    height: 200px;
    font-size: 1.2rem;
  }

  .button-text {
    font-size: 1.2rem;
  }

  .test-controls {
    flex-direction: column;
    align-items: center;
    gap: 15px;
  }

  .test-controls .btn {
    width: 100%;
    max-width: 300px;
  }

  .leaderboard-container {
    padding: 30px 20px;
  }

  .leaderboard-item {
    flex-wrap: wrap;
    padding: 15px;
  }

  .rank-badge {
    width: 40px;
    height: 40px;
    margin-right: 15px;
    font-size: 1rem;
  }

  .player-name {
    font-size: 1rem;
  }

  .score-value {
    text-align: left;
    width: 100%;
    min-width: 80px;
    margin-top: 10px;
    font-size: 1.2rem;
  }

  .class-wall-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .music-list {
    padding: 15px;
  }

  .music-card {
    gap: 15px;
    padding: 15px;
  }

  .music-icon {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }

  .music-title {
    font-size: 1rem;
  }

  .music-player {
    height: 35px;
  }

  .ranking-container {
    padding: 15px;
  }

  .ranking-title {
    font-size: 1.5rem;
  }

  .ranking-tabs {
    gap: 10px;
  }

  .ranking-tab {
    padding: 8px 16px;
    font-size: .85rem;
  }

  .ranking-item {
    flex-wrap: wrap;
    gap: 15px;
    padding: 15px;
  }

  .ranking-rank {
    min-width: 50px;
    font-size: 1.2rem;
  }

  .ranking-medal, .ranking-number {
    font-size: 1.5rem;
  }

  .ranking-avatar {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }

  .ranking-name {
    font-size: 1.1rem;
  }

  .ranking-visits {
    font-size: 1.2rem;
  }

  .ranking-stats {
    min-width: 80px;
  }

  .podium-container {
    gap: 12px;
    margin-bottom: 20px;
  }

  .podium-label {
    padding: 6px 16px;
    font-size: 1rem;
  }

  .teachers-row {
    gap: 10px;
  }

  .teacher-avatar {
    width: 60px;
    height: 60px;
  }

  .teacher-name {
    padding: 2px;
    font-size: .7rem;
  }

  .seating-container {
    flex-flow: wrap;
    justify-content: center;
    gap: 12px;
  }

  .seating-group {
    flex: none;
    gap: 8px;
    min-width: 80px;
  }

  .group-label {
    min-width: 80px;
    padding: 5px 12px;
    font-size: .95rem;
  }

  .seat {
    width: 65px;
    height: 65px;
  }

  .seat-name {
    padding: 6px;
    font-size: .75rem;
  }

  .seats-row {
    gap: 8px;
  }

  .class-wall-lightbox .lightbox-prev {
    left: 10px;
  }

  .class-wall-lightbox .lightbox-next {
    right: 10px;
  }

  .class-wall-lightbox .lightbox-close {
    top: 10px;
    right: 10px;
  }

  .class-wall-lightbox .lightbox-info {
    bottom: 10px;
  }
}