/* ══════════════════════════════════════════════════
   CSE FEST — Cybernauts-inspired
   ══════════════════════════════════════════════════ */

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

:root {
  --bg: transparent;
  --bg-alt: #111122;
  --surface: #151528;
  --border: rgba(255,255,255,0.06);
  --text: #c8c8e0;
  --text-muted: #6a6a88;
  --text-heading: #eeeef8;
  --accent: #381032;
  --accent-light: #d946ef;
  --accent-glow: rgba(217, 70, 239, 0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --max-w: 1200px;
  --nav-h: 64px;
  --font-pixel: 'Press Start 2P', monospace;
  --font-pixel-body: 'VT323', monospace;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font-pixel-body);
  font-size: 18px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4, h5, h6, .nav-link, .btn, .section-title, .hero-title, .nav-title, .card-badge, .status-badge, .hero-sup, .cd-label, .faq-q {
  font-family: var(--font-pixel);
  line-height: 1.5;
}

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
  text-align: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.btn .btn-text { position: relative; z-index: 1; transition: opacity 0.2s; }
.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-primary:hover {
  background: #8b6ffc;
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--accent-glow);
}
.btn-primary:hover .btn-text { opacity: 0; }
.btn-primary::before,
.btn-primary::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50px;
  opacity: 0;
  pointer-events: none;
  font-size: 14px;
  font-weight: 600;
}
.btn-primary:hover::before {
  opacity: 1;
  color: #d946ef;
  animation: btnGlitch 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}
.btn-primary:hover::after {
  opacity: 1;
  color: #fff;
  animation: btnGlitch 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) reverse both;
}
.btn-outline {
  background: transparent;
  color: var(--text-heading);
  border: 1.5px solid rgba(255,255,255,0.15);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
}
.btn-outline:hover .btn-text { opacity: 0; }
.btn-outline::before,
.btn-outline::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50px;
  opacity: 0;
  pointer-events: none;
  font-size: 14px;
  font-weight: 600;
}
.btn-outline:hover::before {
  opacity: 1;
  color: #d946ef;
  animation: btnGlitch 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}
.btn-outline:hover::after {
  opacity: 1;
  color: #fff;
  animation: btnGlitch 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) reverse both;
}
.btn-sm { padding: 7px 18px; font-size: 13px; }

/* ── Cyber Submit Button ── */
.btn-cyber-submit {
  --primary: var(--event-accent, #d946ef);
  --shadow-primary: rgba(var(--event-accent-rgb, 217,70,239), 0.5);
  --shadow-secondary: rgba(var(--event-secondary-rgb, 217,70,239), 0.3);
  --color: white;
  --font-size: 11px;
  --border: 4px;
  --shimmy-distance: 5;
  --clip: polygon(11% 0, 95% 0, 100% 25%, 90% 90%, 95% 90%, 85% 90%, 85% 100%, 7% 100%, 0 80%);
  --clip-one: polygon(0 2%, 100% 2%, 100% 95%, 95% 95%, 95% 90%, 85% 90%, 85% 95%, 8% 95%, 0 70%);
  --clip-two: polygon(0 78%, 100% 78%, 100% 100%, 95% 100%, 95% 90%, 85% 90%, 85% 100%, 8% 100%, 0 78%);
  --clip-three: polygon(0 44%, 100% 44%, 100% 54%, 95% 54%, 95% 54%, 85% 54%, 85% 54%, 8% 54%, 0 54%);
  --clip-four: polygon(0 0, 100% 0, 100% 0, 95% 0, 95% 0, 85% 0, 85% 0, 8% 0, 0 0);
  --clip-five: polygon(0 0, 100% 0, 100% 0, 95% 0, 95% 0, 85% 0, 85% 0, 8% 0, 0 0);
  --clip-six: polygon(0 40%, 100% 40%, 100% 85%, 95% 85%, 95% 85%, 85% 85%, 85% 85%, 8% 85%, 0 70%);
  --clip-seven: polygon(0 63%, 100% 63%, 100% 80%, 95% 80%, 95% 80%, 85% 80%, 85% 80%, 8% 80%, 0 70%);
  color: var(--color);
  text-transform: uppercase;
  font-size: var(--font-size);
  letter-spacing: 3px;
  position: relative;
  font-weight: 900;
  width: 100%;
  height: 44px;
  line-height: 44px;
  text-align: center;
  transition: background 0.2s, 0.3s;
  background: none;
  border: 2px solid rgba(var(--event-accent-rgb, 217,70,239), 0.35);
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font-pixel);
  margin-top: 20px;
}
.btn-cyber-submit:after, .btn-cyber-submit:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  clip-path: var(--clip);
  z-index: -1;
}
.btn-cyber-submit:before {
  background: var(--shadow-primary);
  transform: translate(var(--border), 0);
}
.btn-cyber-submit:after {
  background: var(--primary);
}
.btn-cyber-glitch {
  position: absolute;
  top: calc(var(--border) * -1);
  left: calc(var(--border) * -1);
  right: calc(var(--border) * -1);
  bottom: calc(var(--border) * -1);
  background: var(--shadow-primary);
  text-shadow: 2px 2px var(--shadow-primary), -2px -2px var(--shadow-secondary);
  clip-path: var(--clip);
  animation: cyberGlitch 2s infinite;
  display: none;
  line-height: 52px;
  color: var(--color);
  font-size: var(--font-size);
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 900;
  font-family: var(--font-pixel);
}
.btn-cyber-submit:hover .btn-cyber-glitch,
.btn-cyber-glitch {
  display: block;
}
.btn-cyber-glitch:before {
  content: '';
  position: absolute;
  top: calc(var(--border) * 1);
  right: calc(var(--border) * 1);
  bottom: calc(var(--border) * 1);
  left: calc(var(--border) * 1);
  clip-path: var(--clip);
  background: var(--primary);
  z-index: -1;
}
@keyframes cyberGlitch {
  0% { clip-path: var(--clip-one); }
  2%, 8% { clip-path: var(--clip-two); transform: translate(calc(var(--shimmy-distance) * -1%), 0); }
  6% { clip-path: var(--clip-two); transform: translate(calc(var(--shimmy-distance) * 1%), 0); }
  9% { clip-path: var(--clip-two); transform: translate(0, 0); }
  10% { clip-path: var(--clip-three); transform: translate(calc(var(--shimmy-distance) * 1%), 0); }
  13% { clip-path: var(--clip-three); transform: translate(0, 0); }
  14%, 21% { clip-path: var(--clip-four); transform: translate(calc(var(--shimmy-distance) * 1%), 0); }
  25% { clip-path: var(--clip-five); transform: translate(calc(var(--shimmy-distance) * 1%), 0); }
  30% { clip-path: var(--clip-five); transform: translate(calc(var(--shimmy-distance) * -1%), 0); }
  35%, 45% { clip-path: var(--clip-six); transform: translate(calc(var(--shimmy-distance) * -1%)); }
  40% { clip-path: var(--clip-six); transform: translate(calc(var(--shimmy-distance) * 1%)); }
  50% { clip-path: var(--clip-six); transform: translate(0, 0); }
  55% { clip-path: var(--clip-seven); transform: translate(calc(var(--shimmy-distance) * 1%), 0); }
  60% { clip-path: var(--clip-seven); transform: translate(0, 0); }
  31%, 61%, 100% { clip-path: var(--clip-four); }
}

@keyframes btnGlitch {
  0%   { transform: translate(0); clip-path: inset(0 0 0 0); }
  20%  { transform: translate(-3px, 1px); clip-path: inset(50% 0 20% 0); }
  40%  { transform: translate(2px, -1px); clip-path: inset(20% 0 60% 0); }
  60%  { transform: translate(-2px, 1px); clip-path: inset(80% 0 5% 0); }
  80%  { transform: translate(3px, -1px); clip-path: inset(30% 0 45% 0); }
  100% { transform: translate(0); clip-path: inset(0 0 0 0); }
}

/* ── Nav (cybernauts style) ── */
.nav {
  position: fixed;
  top: 16px; left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: stretch;
  justify-content: space-evenly;
  width: min(960px, calc(100% - 32px));
  height: 72px;
  padding: 0 12px;
  border-radius: 16px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.02), rgba(0,0,0,0.04));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 6px 30px rgba(5,3,10,0.6);
  border: 1px solid rgba(255,255,255,0.06);
  transition: all 0.3s;
}
.nav--scrolled {
  background: linear-gradient(to bottom, rgba(255,255,255,0.04), rgba(0,0,0,0.06));
  border-color: rgba(255,255,255,0.1);
  box-shadow: 0 6px 40px rgba(5,3,10,0.7);
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  height: 100%;
  min-height: 0;
}
.nav-logo-img { height: 100%; width: auto; display: block; }

.nav-link {
  display: flex;
  align-items: center;
  padding: 0 6px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all 0.2s;
  text-decoration: none;
}
.nav-link:hover { background: rgba(255,255,255,0.1); color: var(--text-heading); }
.nav-link:active { background: rgba(255,255,255,0.15); }

/* Hamburger (mobile only) */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  border-radius: 8px;
  color: var(--text-heading);
  background: none;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}
.nav-toggle:hover { background: rgba(255,255,255,0.1); }

/* Mobile: hide links, show hamburger */
@media (max-width: 639px) {
  .nav > .nav-link { display: none; }
  .nav-toggle { display: flex; }
  .nav { height: 64px; padding: 0 8px; }
}

/* Desktop: show all */
@media (min-width: 640px) {
  .nav-toggle { display: none; }
}

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: 92px;
  left: 50%;
  transform: translateX(-50%);
  width: min(960px, calc(100% - 32px));
  border-radius: 16px;
  background: rgba(8,8,16,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  padding: 16px;
  z-index: 99;
}
.mobile-menu--open { display: block; }
.mobile-menu .nav-link {
  display: block;
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 15px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text-muted);
  text-decoration: none;
}
.mobile-menu .nav-link:last-of-type { border-bottom: none; }
.mobile-menu .nav-link:hover { background: rgba(255,255,255,0.1); color: var(--text-heading); }

/* ── Site Background ── */
.site-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: #020617;
  background-image:
    linear-gradient(to right, rgba(71,85,105,0.15) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(71,85,105,0.15) 1px, transparent 1px),
    radial-gradient(circle at 50% 60%, rgba(236,72,153,0.15) 0%, rgba(168,85,247,0.05) 40%, transparent 70%);
  background-size: 40px 40px, 40px 40px, 100% 100%;
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at center, transparent 50%, #0b0712 95%),
    radial-gradient(circle at 50% 50%, rgba(134,92,250,0.15), transparent 40%),
    linear-gradient(#07030a, #0b0712 60%);
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.hero-video-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  pointer-events: none;
  will-change: transform;
  transform: translateZ(0);
}
.hero-video-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: rgba(7, 3, 10, 0.65);
}
.hero .container {
  position: relative;
  z-index: 2;
}
.hero-body {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 120px 0 80px;
}
.hero-sup {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent-light);
  margin-bottom: 16px;
}
.hero-title {
  margin-bottom: 24px;
}
@keyframes flicker {
  0%, 100% { opacity: 1; }
  5% { opacity: 0.85; }
  10% { opacity: 1; }
  17% { opacity: 0.9; }
  20% { opacity: 1; }
  42% { opacity: 0.95; }
  45% { opacity: 1; }
  50% { opacity: 0.88; }
  51% { opacity: 0.75; }
  52% { opacity: 0.92; }
  53% { opacity: 0.7; }
  54% { opacity: 1; }
  70% { opacity: 0.95; }
  72% { opacity: 1; }
  85% { opacity: 0.9; }
  87% { opacity: 1; }
}
@keyframes glow-pulse {
  0%, 100% {
    text-shadow:
      0 0 4px rgba(217,70,239,0.6),
      0 0 8px rgba(217,70,239,0.4),
      0 0 16px rgba(217,70,239,0.3),
      0 0 40px rgba(217,70,239,0.15);
  }
  15% {
    text-shadow:
      0 0 6px rgba(217,70,239,0.7),
      0 0 12px rgba(217,70,239,0.5),
      0 0 24px rgba(217,70,239,0.35),
      0 0 60px rgba(217,70,239,0.2);
  }
  30% {
    text-shadow:
      0 0 3px rgba(217,70,239,0.5),
      0 0 6px rgba(217,70,239,0.3),
      0 0 12px rgba(217,70,239,0.2),
      0 0 30px rgba(217,70,239,0.1);
  }
  50% {
    text-shadow:
      0 0 5px rgba(217,70,239,0.65),
      0 0 10px rgba(217,70,239,0.45),
      0 0 20px rgba(217,70,239,0.3),
      0 0 50px rgba(217,70,239,0.18);
  }
  65% {
    text-shadow:
      0 0 4px rgba(217,70,239,0.55),
      0 0 8px rgba(217,70,239,0.35),
      0 0 16px rgba(217,70,239,0.25),
      0 0 36px rgba(217,70,239,0.12);
  }
  80% {
    text-shadow:
      0 0 7px rgba(217,70,239,0.75),
      0 0 14px rgba(217,70,239,0.55),
      0 0 28px rgba(217,70,239,0.4),
      0 0 70px rgba(217,70,239,0.22);
  }
}
.neon-fire-text {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1;
  color: #efe9f2;
  letter-spacing: -0.05em;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25em;
  animation: flicker 2.8s infinite step-end, glow-pulse 2.8s infinite;
}
.neon-fire-text .inline-block {
  filter: blur(1px);
}
@media (min-width: 640px) {
  .neon-fire-text { font-size: clamp(2.5rem, 5.5vw, 5rem); }
}
.hero-desc {
  font-family: var(--font);
  font-size: 24px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 0 10px rgba(217,70,239,0.4), 0 0 25px rgba(217,70,239,0.2), 0 0 50px rgba(217,70,239,0.1);
  animation: glow-pulse-desc 3s ease-in-out infinite;
}

@keyframes glow-pulse-desc {
  0%, 100% { text-shadow: 0 0 10px rgba(217,70,239,0.4), 0 0 25px rgba(217,70,239,0.2), 0 0 50px rgba(217,70,239,0.1); }
  50%      { text-shadow: 0 0 16px rgba(217,70,239,0.6), 0 0 35px rgba(217,70,239,0.3), 0 0 60px rgba(217,70,239,0.15); }
}
.hero-meta { margin-bottom: 28px; }
.hero-date {
  font-family: var(--font);
  font-size: 22px;
  color: var(--text-heading);
  font-weight: 600;
  text-shadow: 0 0 8px rgba(217,70,239,0.35), 0 0 20px rgba(217,70,239,0.15), 0 0 40px rgba(217,70,239,0.08);
  animation: glow-pulse-date 3s ease-in-out infinite;
}

@keyframes glow-pulse-date {
  0%, 100% { text-shadow: 0 0 8px rgba(217,70,239,0.35), 0 0 20px rgba(217,70,239,0.15), 0 0 40px rgba(217,70,239,0.08); }
  50%      { text-shadow: 0 0 14px rgba(217,70,239,0.55), 0 0 30px rgba(217,70,239,0.25), 0 0 50px rgba(217,70,239,0.12); }
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }

.hero-countdown {
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.hero-countdown-label {
  font-size: 20px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  display: block;
  margin-bottom: 14px;
}
.cd { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cd-card {
  --background: var(--card-color, #d946ef);
  width: 130px;
  height: 130px;
  padding: 4px;
  border-radius: 1rem;
  overflow: visible;
  background: var(--background);
  position: relative;
  z-index: 1;
}
.cd-card::after {
  content: "";
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  z-index: -1;
  height: 100%;
  width: 100%;
  transform: scale(0.8);
  filter: blur(25px);
  background: var(--background);
  transition: opacity 0.5s;
}
.cd-card:hover::after {
  opacity: 0;
}
.cd-card-inner {
  --color: #0a0a1a;
  background: var(--color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  height: 100%;
  overflow: visible;
  border-radius: 0.7rem;
}
.cd-card:hover .cd-card-inner {
  color: var(--card-color);
  transition: color 1s;
}
.cd-num {
  font-size: 42px;
  font-weight: 800;
  color: #eeeeee;
  line-height: 1;
}
.cd-label {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: #aaaaaa;
  font-weight: 600;
}
.cd-card:hover .cd-num {
  color: var(--card-color);
  transition: color 0.5s;
}

/* ── Section ── */
.section { padding: 80px 0; }
.section--alt { background: var(--bg-alt); }
.section-head { text-align: center; margin-bottom: 48px; }
.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 10px;
}
.section-desc {
  font-size: 24px;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto;
}

/* ── Event Cards ── */
.events-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}
.flip-card {
  background-color: transparent;
  width: 100%;
  aspect-ratio: 4/5;
  perspective: 1000px;
  border-radius: 1rem;
  transition: box-shadow 0.3s;
}
.flip-card:hover,
.flip-card.flipped {
  box-shadow: 0 0 40px rgba(var(--event-accent-rgb, 124,92,252), 0.3);
}
.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
  will-change: transform;
}
.flip-card:hover .flip-card-inner,
.flip-card.flipped .flip-card-inner {
  transform: rotateY(180deg);
}
.flip-card-front, .flip-card-back {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border: 1px solid rgba(var(--event-accent-rgb, 124,92,252), 0.2);
  border-radius: 1rem;
  padding: 24px;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(var(--event-accent-rgb, 124,92,252), 0.2), inset 0 0 20px rgba(var(--event-accent-rgb, 124,92,252), 0.06);
  transform: translateZ(0);
}
.flip-card:hover .flip-card-front,
.flip-card:hover .flip-card-back,
.flip-card.flipped .flip-card-front,
.flip-card.flipped .flip-card-back {
  box-shadow: 0 0 60px rgba(var(--event-accent-rgb, 124,92,252), 0.4), inset 0 0 30px rgba(var(--event-accent-rgb, 124,92,252), 0.12);
  border-color: rgba(var(--event-accent-rgb, 124,92,252), 0.5);
}
.flip-card-front {
  background: linear-gradient(135deg, #1a1040 0%, #151530 50%, #0a0a18 100%);
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  gap: 16px;
}
.fcf-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,24,0.75) 0%, rgba(21,21,48,0.6) 100%);
  z-index: 0;
  border-radius: inherit;
}
.flip-card-front .title {
  font-size: 1.3em;
  font-weight: 800;
  color: var(--text-heading);
  margin: 0;
}
.flip-card-back {
  background-color: #0a0a18;
  transform: rotateY(180deg);
  justify-content: flex-start;
  gap: 6px;
  padding: 18px 18px 14px;
  z-index: 0;
}

.flip-card-back::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: radial-gradient(
    circle at 50% 50%,
    #0000 0,
    #0000 2px,
    hsl(0 0 4%) 2px
  );
  background-size: 8px 8px;
  pointer-events: none;
  border-radius: inherit;
}

.flip-card-back > * {
  position: relative;
  z-index: 1;
}
.card-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 100%;
}
.flip-card-back .card-badge {
  padding: 4px 14px;
  border-radius: 20px;
  background: rgba(var(--event-accent-rgb, 217,70,239), 0.12);
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.25);
  color: var(--event-accent, #d946ef);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.flip-card-back .card-title {
  font-size: 16px;
  font-weight: 800;
  color: #eeeef8;
  margin: 4px 0 0;
  line-height: 1.2;
}
.flip-card-back .card-desc {
  font-size: 12px;
  color: #8888aa;
  line-height: 1.3;
  margin: 0 0 2px;
}
.flip-card-back .card-prize {
  background: rgba(var(--event-accent-rgb, 124,92,252), 0.06);
  border: 1px solid rgba(var(--event-accent-rgb, 124,92,252), 0.12);
  border-radius: 10px;
  padding: 12px 14px;
  width: 100%;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-prize-pool {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.pool-amount {
  font-family: var(--font-pixel);
  font-size: 22px;
  font-weight: 900;
  color: var(--event-accent, #d946ef);
  text-shadow: 0 0 10px rgba(var(--event-accent-rgb, 217,70,239), 0.5), 0 0 20px rgba(var(--event-accent-rgb, 217,70,239), 0.3);
  line-height: 1.2;
  letter-spacing: 1px;
  word-break: break-word;
}

.pool-amount.dim {
  color: #6a6a88;
  text-shadow: none;
}

.pool-label {
  font-family: var(--font-pixel);
  font-size: 9px;
  font-weight: 700;
  color: #8888aa;
  text-transform: uppercase;
  letter-spacing: 2px;
}
.flip-card-back .card-entry {
  margin-top: 4px;
  text-align: center;
  font-family: var(--font);
  font-size: 18px;
  font-weight: 500;
  color: #aaaac8;
  padding: 6px 14px;
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.15);
  border-radius: 8px;
  background: rgba(var(--event-accent-rgb, 217,70,239), 0.04);
  width: 100%;
}
.flip-card-back .card-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  width: 100%;
}
.flip-card-back .card-actions .octa-btn {
  width: 50%;
}
.flip-card-back .card-actions .rules-dl-btn {
  width: 50%;
}

/* ── Rules Download Button ── */

@media (max-width: 639px) {
  .flip-card-back .card-actions {
    flex-direction: row;
    justify-content: center;
  }
  .flip-card-back .card-actions .octa-btn,
  .flip-card-back .card-actions .rules-dl-btn {
    width: 45%;
  }
  .flip-card-back .card-actions .octa-btn,
  .flip-card-back .card-actions .rules-dl-btn .rules-dl-text {
    font-size: 11px;
  }
}

.rules-dl-btn {
  position: relative;
  width: 100%;
  height: 38px;
  cursor: pointer;
  display: flex;
  align-items: center;
  border: 1px solid var(--event-accent, #17795E);
  background-color: var(--event-accent, #209978);
  border-radius: 6px;
  overflow: hidden;
  text-decoration: none;
  transition: all 0.3s;
}
.rules-dl-btn, .rules-dl-icon, .rules-dl-text {
  transition: all 0.3s;
}
.rules-dl-text {
  transform: translateX(16px);
  color: #fff;
  font-weight: 600;
  font-size: 12px;
  white-space: nowrap;
  font-family: var(--font-pixel);
}
.rules-dl-icon {
  position: absolute;
  transform: translateX(calc(100% - 39px));
  height: 100%;
  width: 39px;
  background-color: rgba(0,0,0,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  right: 0;
}
.rules-dl-svg {
  width: 18px;
  fill: #fff;
}
.rules-dl-btn:hover {
  background: rgba(0,0,0,0.3);
}
.rules-dl-btn:hover .rules-dl-text {
  color: transparent;
}
.rules-dl-btn:hover .rules-dl-icon {
  width: calc(100% - 2px);
  transform: translateX(0);
}
.rules-dl-btn:active .rules-dl-icon {
  background-color: rgba(0,0,0,0.4);
}
.rules-dl-btn:active {
  border-color: rgba(0,0,0,0.4);
}

/* ── Sponsors ── */
.sponsor-group { margin-bottom: 36px; }
.sponsor-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 20px;
}
.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
}
@property --angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}
.sponsor-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: #0d0d0d;
  border-radius: 1rem;
  min-height: 140px;
  text-decoration: none;
  color: white;
  z-index: 0;
}
.sponsor-card::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 2px;
  border-radius: 1rem;
  background: conic-gradient(from var(--angle), #381032, #952f9f, #d946ef, #381032);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: sponsor-rotate-conic 4s linear infinite;
  z-index: -1;
}
@keyframes sponsor-rotate-conic {
  to { --angle: 360deg; }
}
.sponsor-card img { max-height: 48px; max-width: 100%; opacity: 0.9; transition: opacity 0.3s; }
.sponsor-card:hover img { opacity: 1; }
.sponsor-name { display: block; width: 100%; font-weight: 600; color: #fff; font-size: 14px; text-align: center; }

/* ── Timeline ── */
.timeline {
  max-width: 620px;
  margin: 0 auto;
  padding-left: 28px;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.tl-item { position: relative; padding-bottom: 32px; }
.tl-dot {
  position: absolute;
  left: -20px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  z-index: 1;
}
.tl-date {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.tl-body h4 { font-size: 17px; font-weight: 700; color: var(--text-heading); margin-bottom: 2px; }
.tl-body p { font-size: 14px; color: var(--text-muted); }

/* ══════════════════════════════════════════════════
   SCHEDULE — Holographic Timeline
   ══════════════════════════════════════════════════ */
.schedule-section {
  --sched-accent: #00f0ff;
  --sched-accent-rgb: 0, 240, 255;
  --sched-glow: rgba(var(--sched-accent-rgb), 0.3);
  position: relative;
  overflow: hidden;
  padding-top: 100px;
}

.schedule-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(var(--sched-accent-rgb), 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--sched-accent-rgb), 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

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

/* Timeline track */
.schedule-track {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 0;
}

/* Central glowing line */
.schedule-track::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--sched-accent) 15%,
    var(--sched-accent) 85%,
    transparent 100%
  );
  box-shadow: 0 0 15px var(--sched-glow), 0 0 30px var(--sched-glow);
  animation: sched-line-pulse 3s ease-in-out infinite;
}

@keyframes sched-line-pulse {
  0%, 100% { opacity: 0.6; box-shadow: 0 0 10px var(--sched-glow), 0 0 25px var(--sched-glow); }
  50% { opacity: 1; box-shadow: 0 0 20px var(--sched-glow), 0 0 50px var(--sched-glow); }
}

/* Each schedule item */
.schedule-track .schedule-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.schedule-track .schedule-item.reveal {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered delays */
.schedule-track .schedule-item:nth-child(1) { transition-delay: 0.05s; }
.schedule-track .schedule-item:nth-child(2) { transition-delay: 0.15s; }
.schedule-track .schedule-item:nth-child(3) { transition-delay: 0.25s; }
.schedule-track .schedule-item:nth-child(4) { transition-delay: 0.35s; }
.schedule-track .schedule-item:nth-child(5) { transition-delay: 0.45s; }
.schedule-track .schedule-item:nth-child(6) { transition-delay: 0.55s; }
.schedule-track .schedule-item:nth-child(7) { transition-delay: 0.65s; }
.schedule-track .schedule-item:nth-child(8) { transition-delay: 0.75s; }

/* Alternating layout */
.schedule-track .schedule-item:nth-child(odd) {
  flex-direction: row;
  padding-right: calc(50% + 30px);
}

.schedule-track .schedule-item:nth-child(even) {
  flex-direction: row-reverse;
  padding-left: calc(50% + 30px);
}

/* Timeline dot */
.schedule-dot {
  position: absolute;
  left: 50%;
  top: 12px;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--sched-accent);
  box-shadow: 0 0 15px var(--sched-glow), 0 0 30px var(--sched-glow);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: dot-pulse 2s ease-in-out infinite;
  transition: transform 0.3s, box-shadow 0.3s;
}

.schedule-dot::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #0a0a1a;
  border: 1px solid var(--sched-accent);
}

.schedule-track .schedule-item:hover .schedule-dot {
  transform: translateX(-50%) scale(1.3);
  box-shadow: 0 0 25px var(--sched-glow), 0 0 50px var(--sched-glow);
}

@keyframes dot-pulse {
  0%, 100% { box-shadow: 0 0 10px var(--sched-glow), 0 0 20px var(--sched-glow); }
  50% { box-shadow: 0 0 20px var(--sched-glow), 0 0 40px var(--sched-glow); }
}

/* Schedule Card */
.schedule-card {
  position: relative;
  width: 100%;
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(var(--sched-accent-rgb), 0.15);
  border-radius: 16px;
  backdrop-filter: blur(12px);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.4s,
              box-shadow 0.4s;
  transform-style: preserve-3d;
  perspective: 600px;
}

.schedule-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 17px;
  background: linear-gradient(
    135deg,
    rgba(var(--sched-accent-rgb), 0.3),
    transparent 40%,
    transparent 60%,
    rgba(var(--sched-accent-rgb), 0.1)
  );
  z-index: -1;
  opacity: 0;
  transition: opacity 0.4s;
}

.schedule-track .schedule-item:hover .schedule-card {
  transform: translateY(-4px) rotateX(2deg);
  border-color: rgba(var(--sched-accent-rgb), 0.4);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4),
              0 0 30px rgba(var(--sched-accent-rgb), 0.1);
}

.schedule-track .schedule-item:hover .schedule-card::before {
  opacity: 1;
}

/* Card Meta (date & time) */
.schedule-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.schedule-date-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(var(--sched-accent-rgb), 0.1);
  border: 1px solid rgba(var(--sched-accent-rgb), 0.2);
  border-radius: 8px;
  font-family: var(--font-pixel);
  font-size: 13px;
  font-weight: 700;
  color: var(--sched-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.schedule-time-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  font-family: var(--font-pixel);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* Card title */
.schedule-card-title {
  font-family: var(--font-pixel-body);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-heading);
  margin: 0 0 8px;
  line-height: 1.3;
  transition: color 0.3s;
}

.schedule-track .schedule-item:hover .schedule-card-title {
  color: var(--sched-accent);
}

/* Card description */
.schedule-card-desc {
  font-family: var(--font);
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* Empty state */
.schedule-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 18px;
  font-family: var(--font);
}

/* Responsive: stack on mobile */
@media (max-width: 768px) {
  .schedule-track::before {
    left: 20px;
  }

  .schedule-track .schedule-item:nth-child(odd),
  .schedule-track .schedule-item:nth-child(even) {
    flex-direction: row;
    padding: 0 0 0 50px;
  }

  .schedule-dot {
    left: 20px;
    width: 16px;
    height: 16px;
  }

  .schedule-dot::after {
    width: 6px;
    height: 6px;
  }

  .schedule-card {
    padding: 18px;
  }

  .schedule-card-title {
    font-size: 18px;
  }
}

/* ── Committee ── */
.committee-group { margin-bottom: 40px; }
.committee-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 20px;
}
.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
}
.cm-card {
  position: relative;
  width: 200px;
  height: 260px;
  background: transparent;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  border-radius: 8px;
  margin: 0 auto;
}
.cm-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(315deg, #381032, #952f9f, #d946ef);
}
.cm-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(315deg, #381032, #952f9f);
  filter: blur(30px);
}
.cm-card b {
  position: absolute;
  inset: 6px;
  background: rgba(0, 0, 0, 0.6);
  z-index: 2;
  border-radius: 4px;
}
.cm-card img {
  position: absolute;
  z-index: 3;
  scale: 0.8;
  opacity: 0.25;
  transition: 0.5s;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
}
.cm-card:hover img,
.cm-card.in-view img {
  scale: 0.5;
  opacity: 0.9;
  transform: translateY(-70px);
}
.cm-initial {
  position: absolute;
  z-index: 3;
  font-size: 48px;
  font-weight: 700;
  color: rgba(255,255,255,0.4);
  font-family: 'Press Start 2P', monospace;
  transition: 0.5s;
}
.cm-card:hover .cm-initial,
.cm-card.in-view .cm-initial {
  opacity: 0.9;
  transform: translateY(-70px) scale(0.6);
}
.cm-content {
  position: absolute;
  z-index: 3;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: scale(0);
  transition: 0.5s;
}
.cm-card:hover .cm-content,
.cm-card.in-view .cm-content {
  transform: scale(1);
  bottom: 25px;
}
.cm-title {
  position: relative;
  color: #fff;
  font-weight: 500;
  line-height: 1.2em;
  font-size: 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: center;
}
.cm-title span {
  font-weight: 300;
  font-size: 0.70em;
  color: #d946ef;
}
.cm-dept {
  font-size: 11px;
  color: rgba(170, 222, 243, 0.6);
  margin-top: 4px;
  text-align: center;
}
.cm-card,
.cm-card * { cursor: default; }

/* ── Invitation ── */
.inv-form-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.inv-preview {
  margin-top: 32px;
}

/* ── FAQ ── */
.faq-list { max-width: 640px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
  text-align: left;
}
.faq-q:hover { background: rgba(255,255,255,0.03); }
.faq-arrow { flex-shrink: 0; color: var(--text-muted); transition: transform 0.3s; }
.faq--open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  font-family: var(--font);
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
  padding: 0 20px;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
}
.faq--open .faq-a { max-height: 500px; padding: 0 20px 16px; }

/* ── Notices ── */
.notices { max-width: 640px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.notice {
  display: flex;
  gap: 14px;
  padding: 18px 22px;
  background: linear-gradient(163deg, #00ff75 0%, #3700ff 100%);
  border-radius: var(--radius-sm);
  position: relative;
  z-index: 0;
  transition: all .2s;
}
.notice::before {
  content: '';
  position: absolute;
  inset: 2px;
  background: var(--surface);
  border-radius: calc(var(--radius-sm) - 2px);
  z-index: -1;
}
.notice:hover { transform: scale(0.98); border-radius: 20px; box-shadow: 0px 0px 30px 1px rgba(0, 255, 117, 0.30); }
.notice-new {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 2px 10px;
  border-radius: 20px;
  background: var(--accent);
  color: white;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.notice-body h4 { font-family: var(--font); font-size: 20px; font-weight: 700; color: var(--text-heading); margin-bottom: 4px; }
.notice-body p { font-family: var(--font); font-size: 18px; color: var(--text-muted); line-height: 1.6; margin-bottom: 6px; }
.notice-date { font-size: 14px; color: var(--text-muted); opacity: 0.5; }

/* ── Event Detail ── */
.detail-section { padding: 100px 0 60px; overflow-x: hidden; }
.back-link { display: inline-block; color: var(--text-muted); font-size: 14px; margin-bottom: 28px; transition: color 0.2s; }
.back-link:hover { color: var(--text-heading); }



.detail-layout { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; align-items: start; }
.detail-layout > * { min-width: 0; }
.detail-left { position: sticky; top: 80px; }
.detail-poster { border-radius: var(--radius); overflow: hidden; margin-bottom: 20px; border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.15); box-shadow: 0 0 24px rgba(var(--event-accent-rgb, 217,70,239), 0.12), inset 0 0 12px rgba(var(--event-accent-rgb, 217,70,239), 0.04); }
.detail-poster img { width: 100%; display: block; }
.detail-date { text-align: center; padding: 20px; background: var(--event-accent, var(--accent)); border-radius: var(--radius-sm); color: white; }
.detail-date-month { display: block; font-size: 13px; text-transform: uppercase; letter-spacing: 2px; opacity: 0.8; }
.detail-date-day { display: block; font-size: 44px; font-weight: 900; line-height: 1; }
.detail-date-year { display: block; font-size: 15px; opacity: 0.7; }
.detail-date-time { display: block; font-size: 13px; margin-top: 6px; font-weight: 600; }

.detail-right {
  display: flex;
  flex-direction: column;
  gap: 24px;
  overflow-wrap: break-word;
  word-break: break-word;
}
.detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.detail-card-header { margin-bottom: 20px; }
.detail-cat {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  background: rgba(var(--event-accent-rgb, 217,70,239), 0.12);
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.2);
  color: var(--event-accent, #d946ef);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.detail-title {
  font-size: 34px;
  font-weight: 900;
  color: var(--text-heading);
  line-height: 1.15;
}
.detail-card-section {
  background: #0a0a18;
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.15);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: 0 0 24px rgba(var(--event-accent-rgb, 217,70,239), 0.15), inset 0 0 16px rgba(var(--event-accent-rgb, 217,70,239), 0.05);
  transition: box-shadow 0.3s, border-color 0.3s;
}
.detail-card-section:hover {
  box-shadow: 0 0 40px rgba(var(--event-accent-rgb, 217,70,239), 0.3), inset 0 0 24px rgba(var(--event-accent-rgb, 217,70,239), 0.1);
  border-color: rgba(var(--event-accent-rgb, 217,70,239), 0.3);
}
.detail-desc { margin: 0; }
.detail-desc h2 { font-size: 20px; font-weight: 700; color: var(--text-heading); margin-bottom: 8px; }
.detail-desc p { font-size: 24px; color: var(--text-muted); line-height: 1.8; }

.detail-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}
.detail-meta-item {
  padding: 16px;
  background: #0a0a18;
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.12);
  border-radius: var(--radius-sm);
  transition: box-shadow 0.3s, border-color 0.2s;
  box-shadow: 0 0 16px rgba(var(--event-accent-rgb, 217,70,239), 0.1), inset 0 0 12px rgba(var(--event-accent-rgb, 217,70,239), 0.04);
}
.detail-meta-item:hover {
  border-color: rgba(var(--event-accent-rgb, 217,70,239), 0.3);
  box-shadow: 0 0 28px rgba(var(--event-accent-rgb, 217,70,239), 0.25), inset 0 0 18px rgba(var(--event-accent-rgb, 217,70,239), 0.08);
}
.detail-meta-item strong {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: #8888aa;
  margin-bottom: 4px;
}
.detail-meta-item > span {
  font-size: 18px;
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.3;
}
.prize-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
@keyframes prizeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.prize-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-heading);
  opacity: 0;
  animation: prizeIn 0.4s ease-out forwards;
}
.prize-row:nth-child(1) { animation-delay: 0.1s; }
.prize-row:nth-child(2) { animation-delay: 0.2s; }
.prize-row:nth-child(3) { animation-delay: 0.3s; }
.prize-row:hover { transform: translateX(4px); transition: transform 0.2s; }
.prize-pos-label {
  font-weight: 600;
  color: #ccccee;
  font-size: 16px;
}
.prize-dot {
  flex: 1;
  max-width: 40px;
  height: 1px;
  background: linear-gradient(90deg, rgba(var(--event-accent-rgb, 217,70,239), 0.3), transparent);
}
.prize-val {
  font-weight: 700;
  color: var(--event-accent, #d946ef);
  font-size: 18px;
  white-space: nowrap;
  margin-left: auto;
  transition: text-shadow 0.3s, color 0.3s;
  text-shadow: 0 0 8px rgba(var(--event-accent-rgb, 217,70,239), 0.35);
}
.prize-row:hover .prize-val {
  color: color-mix(in srgb, var(--event-accent, #d946ef) 80%, white);
  text-shadow: 0 0 16px rgba(var(--event-accent-rgb, 217,70,239), 0.7);
}

/* Detail page prize pool */
.detail-prize-pool {
  display: flex;
  align-items: center;
  min-height: 48px;
}

.detail-pool-amount {
  font-family: var(--font-pixel);
  font-size: 20px;
  font-weight: 900;
  color: var(--event-accent, #d946ef);
  text-shadow: 0 0 10px rgba(var(--event-accent-rgb, 217,70,239), 0.5), 0 0 20px rgba(var(--event-accent-rgb, 217,70,239), 0.3);
  line-height: 1.2;
  letter-spacing: 1px;
  word-break: break-word;
}

.detail-pool-amount.dim {
  color: #6a6a88;
  text-shadow: none;
}

.detail-schedule {
  margin-bottom: 32px;
}
.detail-schedule h3 {
  font-family: var(--font-pixel);
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--event-accent, #d946ef);
  text-shadow: 0 0 12px rgba(var(--event-accent-rgb, 217,70,239), 0.4);
  margin-bottom: 16px;
}
.schedule-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.schedule-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  background: #0a0a18;
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.1);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.schedule-item:hover {
  border-color: rgba(var(--event-accent-rgb, 217,70,239), 0.3);
  box-shadow: 0 0 16px rgba(var(--event-accent-rgb, 217,70,239), 0.15);
}
.schedule-date {
  font-family: var(--font-pixel);
  font-size: 11px;
  color: var(--event-accent, #d946ef);
  white-space: nowrap;
  min-width: 50px;
}
.schedule-time {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: rgba(var(--event-accent-rgb, 217,70,239), 0.7);
  white-space: nowrap;
  min-width: 55px;
}
.schedule-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
}
.schedule-desc {
  font-size: 13px;
  color: #8888aa;
  margin: 4px 0 0;
  line-height: 1.4;
}

.form-wrap {
  background: var(--surface);
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.15);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 0 24px rgba(var(--event-accent-rgb, 217,70,239), 0.15), inset 0 0 16px rgba(var(--event-accent-rgb, 217,70,239), 0.05);
  transition: box-shadow 0.3s, border-color 0.3s;
}
.form-wrap:hover {
  box-shadow: 0 0 40px rgba(var(--event-accent-rgb, 217,70,239), 0.3), inset 0 0 24px rgba(var(--event-accent-rgb, 217,70,239), 0.1);
  border-color: rgba(var(--event-accent-rgb, 217,70,239), 0.3);
}
.payment-section { margin-bottom: 20px; }
.hackathon-section { margin-bottom: 20px; }
.iupc-intro { font-size: 15px; color: var(--text-muted); margin-bottom: 20px; }
.iupc-member-block, .hackathon-member-block, .hackathon-block {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.iupc-member-heading {
  font-family: var(--font-pixel);
  font-size: 11px;
  color: var(--event-accent, var(--accent-light));
  margin-bottom: 14px;
}

/* ── Size Guide ── */
.size-guide-wrap {
  margin-bottom: 16px;
}

.size-guide-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.2);
  border-radius: 8px;
  background: rgba(var(--event-accent-rgb, 217,70,239), 0.04);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}

.size-guide-link:hover {
  border-color: rgba(var(--event-accent-rgb, 217,70,239), 0.5);
  background: rgba(var(--event-accent-rgb, 217,70,239), 0.08);
}

.size-guide-img {
  width: 40px;
  height: auto;
  border-radius: 4px;
}

.size-guide-link span {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--event-accent, var(--accent-light));
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.payment-label { font-size: 13px; font-weight: 700; color: var(--text-heading); margin-bottom: 10px; letter-spacing: 0.5px; }
.payment-options { display: flex; gap: 12px; margin-bottom: 14px; }
.payment-option {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-pixel-body);
  color: var(--text);
  transition: all 0.2s;
  background: var(--bg);
}
.payment-option.active {
  border-color: var(--event-accent, var(--accent-light));
  color: var(--text-heading);
  background: rgba(var(--event-accent-rgb, 217,70,239), 0.08);
}
.payment-option input { display: none; }
.payment-radio {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 2px solid var(--text-muted);
  display: inline-block;
  position: relative;
  transition: all 0.2s;
}
.payment-option.active .payment-radio {
  border-color: var(--event-accent, var(--accent-light));
}
.payment-option.active .payment-radio::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--event-accent, var(--accent-light));
}
.bkash-hint {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 12px;
  padding: 10px 14px;
  background: rgba(var(--event-accent-rgb, 217,70,239), 0.06);
  border: 1px solid rgba(var(--event-accent-rgb, 217,70,239), 0.2);
  border-radius: var(--radius-sm);
}
.bkash-hint strong { color: var(--event-accent, var(--accent-light)); font-weight: 700; }
.form-wrap h2 { font-size: 20px; font-weight: 700; color: var(--text-heading); margin-bottom: 20px; }
.form-closed {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

form { display: flex; flex-direction: column; gap: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.fl-input {
  position: relative;
  width: 100%;
}
.fl-input--readonly .fl-readonly-text {
  display: block;
  padding: 18px 14px 10px;
  font-size: 16px;
  color: var(--text-heading);
  opacity: 0.8;
}
.fl-input--readonly .fl-label {
  top: 4px;
  font-size: 11px;
  opacity: 0.6;
}
.fl-input .fl-bar {
  position: absolute;
  left: -1px;
  top: 8px;
  bottom: 8px;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(to bottom, var(--event-accent, #d946ef), color-mix(in srgb, var(--event-accent, #d946ef) 60%, #000));
  opacity: 0.5;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 1;
}
.fl-input:focus-within .fl-bar,
.fl-input.has-value .fl-bar {
  opacity: 1;
}
.fl-input input, .fl-input select, .fl-input textarea {
  width: 100%;
  padding: 22px 16px 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.35);
  color: var(--text-heading);
  font-size: 18px;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.fl-input textarea { padding-top: 22px; resize: vertical; min-height: 50px; }
.fl-input select { padding-top: 18px; padding-bottom: 10px; color: var(--text); }
.fl-input select option { background: var(--bg); color: var(--text-heading); }
.fl-input input:focus, .fl-input select:focus, .fl-input textarea:focus {
  outline: none;
  border-color: var(--event-accent, var(--accent));
  box-shadow: 0 0 0 2px rgba(var(--event-accent-rgb, 217,70,239), 0.3);
}
.fl-input .fl-label {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--text-muted);
  pointer-events: none;
  transition: all 0.2s ease;
}
.fl-input textarea ~ .fl-label {
  top: 16px;
  transform: none;
}
.fl-input input:focus ~ .fl-label,
.fl-input input:not(:placeholder-shown) ~ .fl-label,
.fl-input select:focus ~ .fl-label,
.fl-input select:not([value=""]) ~ .fl-label,
.fl-input textarea:focus ~ .fl-label,
.fl-input textarea:not(:placeholder-shown) ~ .fl-label {
  top: 6px;
  transform: none;
  font-size: 10px;
  font-weight: 600;
  color: var(--event-accent, var(--accent-light));
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.fl-input textarea:focus ~ .fl-label,
.fl-input textarea:not(:placeholder-shown) ~ .fl-label {
  top: 6px;
}

.checkbox-label {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted) !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
}
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

/* ── Team Members ── */
.tm-block {
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
}
.tm-heading {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-light);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.team-members { display: flex; flex-direction: column; gap: 14px; }

/* ── Footer ── */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.5fr; gap: 40px; margin-bottom: 32px; }
.footer-brand h3 { font-size: 32px; font-weight: 800; color: var(--text-heading); margin-bottom: 6px; }
.footer-brand p { font-size: 20px; color: var(--text-muted); line-height: 1.5; }
.footer-links h4, .footer-contact h4 { font-size: 18px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-muted); margin-bottom: 14px; }
.footer-links a { display: block; font-size: 20px; color: var(--text-muted); padding: 3px 0; transition: color 0.2s; }
.footer-links a:hover { color: var(--text-heading); }
.footer-contact p, .footer-contact a { font-size: 20px; color: var(--text-muted); margin-bottom: 4px; display: block; }
.footer-contact a:hover { color: var(--accent-light); }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid var(--border); }
.footer-bottom p { font-size: 18px; color: var(--text-muted); opacity: 0.5; }

/* ── Holographic Rules Checkbox ── */
.holo-rules-checkbox {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  min-height: 120px;
  z-index: 10;
  margin-top: 16px;
}

.holo-rules-checkbox .holo-checkbox-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.holo-rules-checkbox .holo-checkbox {
  position: relative;
  width: 40px;
  height: 40px;
  cursor: pointer;
  transform-style: preserve-3d;
  perspective: 1000px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.holo-rules-checkbox .holo-box {
  position: relative;
  width: 100%;
  height: 100%;
  border: 2px solid rgba(var(--event-accent-rgb, 0, 162, 255), 0.7);
  border-radius: 12px;
  background-color: rgba(0, 24, 55, 0.5);
  box-shadow: 0 0 10px rgba(var(--event-accent-rgb, 0, 162, 255), 0.5), inset 0 0 15px rgba(var(--event-accent-rgb, 0, 162, 255), 0.3);
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  transition: all 0.3s ease;
  transform-style: preserve-3d;
}

.holo-rules-checkbox .holo-inner {
  position: absolute;
  width: 30%;
  height: 30%;
  background-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.5);
  border-radius: 4px;
  opacity: 0;
  transform: scale(0) rotate(45deg);
  transition: all 0.3s ease;
  box-shadow: 0 0 15px rgba(var(--event-accent-rgb, 0, 162, 255), 0.8);
}

.holo-rules-checkbox .scan-effect {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(var(--event-accent-rgb, 0, 162, 255), 0.8), transparent);
  animation: holo-scan-off 4s infinite;
  opacity: 0.3;
  transition: all 0.3s ease;
}

@keyframes holo-scan-off {
  0% { left: -100%; opacity: 0.3; }
  100% { left: 100%; opacity: 0.3; }
}

@keyframes holo-scan-on {
  0% { left: -100%; opacity: 1; }
  100% { left: 100%; opacity: 1; }
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-box {
  border-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.9);
  box-shadow: 0 0 20px rgba(var(--event-accent-rgb, 0, 162, 255), 0.8), inset 0 0 25px rgba(var(--event-accent-rgb, 0, 162, 255), 0.5);
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-inner {
  background-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.9);
  box-shadow: 0 0 20px rgba(var(--event-accent-rgb, 0, 162, 255), 1);
  opacity: 1;
  transform: scale(1) rotate(45deg);
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .scan-effect {
  animation: holo-scan-on 2s infinite;
  opacity: 1;
  background: linear-gradient(90deg, transparent, rgba(var(--event-accent-rgb, 0, 162, 255), 0.9), transparent);
}

.holo-rules-checkbox .holo-glow {
  position: absolute;
  width: 200%;
  height: 200%;
  left: -50%;
  top: -50%;
  background: radial-gradient(ellipse at center, rgba(var(--event-accent-rgb, 0, 162, 255), 0.2) 0%, rgba(var(--event-accent-rgb, 0, 162, 255), 0.1) 40%, transparent 70%);
  pointer-events: none;
  filter: blur(10px);
  opacity: 0.5;
  z-index: -1;
  animation: holo-glow-pulse 4s infinite alternate;
  transition: all 0.5s ease;
}

@keyframes holo-glow-pulse {
  0% { opacity: 0.3; filter: blur(10px) brightness(0.8); }
  100% { opacity: 0.6; filter: blur(15px) brightness(1.2); }
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-glow {
  animation: holo-active-glow-pulse 2s infinite alternate;
}

@keyframes holo-active-glow-pulse {
  0% { opacity: 0.4; filter: blur(10px) brightness(1); }
  100% { opacity: 0.8; filter: blur(20px) brightness(1.5); }
}

.holo-rules-checkbox .corner-accent {
  position: absolute;
  width: 8px;
  height: 8px;
  border-style: solid;
  border-width: 2px;
  border-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.5);
  transition: all 0.3s ease;
}

.holo-rules-checkbox .corner-accent:nth-child(1) { top: -4px; left: -4px; border-right: none; border-bottom: none; border-radius: 4px 0 0 0; }
.holo-rules-checkbox .corner-accent:nth-child(2) { top: -4px; right: -4px; border-left: none; border-bottom: none; border-radius: 0 4px 0 0; }
.holo-rules-checkbox .corner-accent:nth-child(3) { bottom: -4px; left: -4px; border-right: none; border-top: none; border-radius: 0 0 0 4px; }
.holo-rules-checkbox .corner-accent:nth-child(4) { bottom: -4px; right: -4px; border-left: none; border-top: none; border-radius: 0 0 4px 0; }

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .corner-accent {
  width: 10px;
  height: 10px;
  border-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.9);
}

.holo-rules-checkbox .status-text {
  margin-top: 16px;
  font-size: 9px;
  font-weight: 600;
  color: transparent;
  position: relative;
  transition: all 0.3s ease;
  text-align: center;
  font-family: var(--font-pixel);
  letter-spacing: 0.5px;
  height: 1.5em;
  line-height: 1.5em;
}
.holo-rules-checkbox .status-text::before {
  content: "RULES: NOT ACCEPTED";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.8);
  text-shadow: 0 0 5px rgba(var(--event-accent-rgb, 0, 162, 255), 0.5);
}
.holo-rules-checkbox .holo-checkbox-input:checked ~ .status-text::before {
  content: "RULES: ACCEPTED";
  color: rgba(var(--event-accent-rgb, 0, 162, 255), 1);
  text-shadow: 0 0 8px rgba(var(--event-accent-rgb, 0, 162, 255), 0.7);
}

.holo-rules-checkbox .rules-validation-note {
  font-family: var(--font-pixel);
  font-size: 9px;
  letter-spacing: 0.5px;
  text-align: center;
  color: #ea5358;
  text-shadow: 0 0 8px rgba(234, 83, 88, 0.6);
  margin-top: 8px;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 0.3s ease, max-height 0.3s ease, margin-top 0.3s ease;
}
.holo-rules-checkbox .rules-validation-note.show {
  opacity: 1;
  max-height: 30px;
}

@keyframes holoShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}
.holo-rules-checkbox.shake {
  animation: holoShake 0.5s ease;
}

.holo-rules-checkbox .activation-rings {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.holo-rules-checkbox .activation-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40%;
  height: 40%;
  border: 1px solid transparent;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  transition: all 0.3s ease;
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .activation-ring {
  animation: holo-ring-expand 2s ease-out forwards;
  border-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.7);
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .activation-ring:nth-child(1) { animation-delay: 0s; }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .activation-ring:nth-child(2) { animation-delay: 0.3s; }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .activation-ring:nth-child(3) { animation-delay: 0.6s; }

@keyframes holo-ring-expand {
  0% { transform: translate(-50%, -50%) scale(0); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(2.5); opacity: 0; }
}

.holo-rules-checkbox .holo-particles {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.holo-rules-checkbox .holo-particle {
  position: absolute;
  background-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.7);
  border-radius: 50%;
  width: 3px;
  height: 3px;
  opacity: 0;
  filter: blur(1px);
  transition: all 0.3s ease;
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-particle {
  background-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.8);
  animation: holo-particle-float 3s infinite ease-in-out;
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-particle:nth-child(1) { top: 20%; left: 30%; animation-delay: 0.1s; }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-particle:nth-child(2) { top: 70%; left: 20%; animation-delay: 0.7s; }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-particle:nth-child(3) { top: 40%; left: 80%; animation-delay: 1.3s; }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-particle:nth-child(4) { top: 60%; left: 60%; animation-delay: 1.9s; }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-particle:nth-child(5) { top: 30%; left: 45%; animation-delay: 2.5s; }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .holo-particle:nth-child(6) { top: 60%; left: 40%; animation-delay: 3.1s; }

@keyframes holo-particle-float {
  0% { transform: translateY(0) scale(1); opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { transform: translateY(-20px) scale(0); opacity: 0; }
}

.holo-rules-checkbox .cube-transform {
  position: absolute;
  width: 30%;
  height: 30%;
  transform-style: preserve-3d;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.holo-rules-checkbox .cube-face {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.3);
  border: 1px solid rgba(var(--event-accent-rgb, 0, 162, 255), 0.5);
  box-shadow: 0 0 5px rgba(var(--event-accent-rgb, 0, 162, 255), 0.3);
  transition: all 0.3s ease;
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .cube-transform {
  opacity: 1;
  animation: holo-cube-rotate 5s infinite linear;
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .cube-face {
  background-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.4);
  border-color: rgba(var(--event-accent-rgb, 0, 162, 255), 0.6);
  box-shadow: 0 0 5px rgba(var(--event-accent-rgb, 0, 162, 255), 0.4);
}

.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .cube-face:nth-child(1) { transform: translateZ(8px); }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .cube-face:nth-child(2) { transform: rotateY(180deg) translateZ(8px); }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .cube-face:nth-child(3) { transform: rotateY(90deg) translateZ(8px); }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .cube-face:nth-child(4) { transform: rotateY(-90deg) translateZ(8px); }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .cube-face:nth-child(5) { transform: rotateX(90deg) translateZ(8px); }
.holo-rules-checkbox .holo-checkbox-input:checked + .holo-checkbox .cube-face:nth-child(6) { transform: rotateX(-90deg) translateZ(8px); }

@keyframes holo-cube-rotate {
  0% { transform: rotateX(0) rotateY(0) rotateZ(0); }
  100% { transform: rotateX(360deg) rotateY(360deg) rotateZ(360deg); }
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .detail-layout { grid-template-columns: 1fr; }
  .detail-left { position: static; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .detail-meta { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav { padding: 8px 12px; }
  .nav-logo-img { height: 100%; }
  .section-title { font-size: 24px; }
  .section { padding: 56px 0; }
  .events-grid { grid-template-columns: 1fr; }
  .committee-grid { grid-template-columns: repeat(2, 1fr); }
  .cd-num { font-size: 32px; }
  .cd-card { width: 100px; height: 100px; }
  .schedule-item { flex-wrap: wrap; gap: 4px 12px; }
  .schedule-title { width: 100%; }
}
@media (max-width: 480px) {
  .committee-grid { grid-template-columns: 1fr; }
  .section { padding: 40px 0; }
}

/* ── Cookie Banner ── */
#cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 16px 24px;
  background: rgba(10, 10, 26, 0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.5);
}

.cookie-text {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
  max-width: 600px;
  line-height: 1.5;
}

.cookie-btn {
  font-family: var(--font-pixel);
  font-size: 12px;
  font-weight: 700;
  padding: 10px 28px;
  border: none;
  border-radius: 50px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: background 0.2s, transform 0.2s;
  flex-shrink: 0;
}

.cookie-btn:hover {
  background: #8b6ffc;
  transform: translateY(-1px);
}

@media (max-width: 480px) {
  #cookie-banner {
    flex-direction: column;
    text-align: center;
    gap: 12px;
    padding: 14px 18px;
  }
  .cookie-text { font-size: 13px; }
}

/* ── Loading Screen ── */
#loader-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #07030a;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ai-matrix-loader {
  width: 120px;
  height: 160px;
  margin: 30px auto;
  position: relative;
  perspective: 800px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
}
.digit {
  color: #00ff88;
  font-family: monospace;
  font-size: 18px;
  text-align: center;
  text-shadow: 0 0 5px #00ff88;
  animation:
    matrix-fall 2s infinite,
    matrix-flicker 0.5s infinite;
  opacity: 0;
}
.digit:nth-child(1) { animation-delay: 0.1s; }
.digit:nth-child(2) { animation-delay: 0.3s; }
.digit:nth-child(3) { animation-delay: 0.5s; }
.digit:nth-child(4) { animation-delay: 0.7s; }
.digit:nth-child(5) { animation-delay: 0.9s; }
.digit:nth-child(6) { animation-delay: 1.1s; }
.digit:nth-child(7) { animation-delay: 1.3s; }
.digit:nth-child(8) { animation-delay: 1.5s; }
.glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(0,255,136,0.1) 0%, transparent 70%);
  animation: matrix-pulse 2s infinite;
}
@keyframes matrix-fall {
  0% { transform: translateY(-50px) rotateX(90deg); opacity: 0; }
  20%, 80% { transform: translateY(0) rotateX(0deg); opacity: 0.8; }
  100% { transform: translateY(50px) rotateX(-90deg); opacity: 0; }
}
@keyframes matrix-flicker {
  0%, 19%, 21%, 100% { opacity: 0.8; }
  20% { opacity: 0.2; }
}
@keyframes matrix-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.7; }
}

/* ── Octagonal Button ── */
.octa-btn {
  position: relative;
  width: 100%;
  height: 4em;
  outline: none;
  transition: 0.1s;
  background-color: transparent;
  border: none;
  font-size: 13px;
  font-weight: bold;
  color: #ddebf0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-family: var(--font-pixel);
  letter-spacing: 2px;
  cursor: pointer;
}

.octa-clip {
  --color: var(--event-accent, #2761c3);
  position: absolute;
  top: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
  border: 5px double var(--color);
  box-shadow: inset 0px 0px 15px var(--color);
  -webkit-clip-path: polygon(30% 0%, 70% 0%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%);
  clip-path: polygon(30% 0%, 70% 0%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%);
  pointer-events: none;
}

.octa-arrow {
  position: absolute;
  transition: 0.2s;
  background-color: var(--event-accent, #2761c3);
  top: 35%;
  width: 11%;
  height: 30%;
}

.octa-leftArrow {
  left: -13.5%;
  -webkit-clip-path: polygon(100% 0, 100% 100%, 0 50%);
  clip-path: polygon(100% 0, 100% 100%, 0 50%);
}

.octa-rightArrow {
  -webkit-clip-path: polygon(100% 49%, 0 0, 0 100%);
  clip-path: polygon(100% 49%, 0 0, 0 100%);
  left: 102%;
}

.octa-btn .octa-rightArrow {
  background-color: var(--event-accent, #2761c3);
  left: -13.5%;
  animation: 0.6s ease-in-out both infinite alternate octa-rightArrow8;
}

.octa-btn .octa-leftArrow {
  background-color: var(--event-accent, #2761c3);
  left: 102%;
  animation: 0.6s ease-in-out both infinite alternate octa-leftArrow8;
}

.octa-corner {
  position: absolute;
  width: 4em;
  height: 4em;
  background-color: var(--event-accent, #2761c3);
  box-shadow: inset 1px 1px 8px var(--event-accent, #2781c3);
  transform: scale(1) rotate(45deg);
  transition: 0.2s;
  pointer-events: none;
  animation: 0.1s ease-in-out both infinite alternate octa-cornerPulse,
  0.2s linear 0.4s both infinite alternate octa-lightEffect;
}

.octa-rightTop { animation-delay: 0s !important; top: -1.98em; left: 91%; }
.octa-leftTop { animation-delay: 0.3s !important; top: -1.96em; left: -3.0em; }
.octa-leftBottom { animation-delay: 0.6s !important; top: 2.10em; left: -2.15em; }
.octa-rightBottom { animation-delay: 0.9s !important; top: 45%; left: 88%; }

.octa-clip {
  animation: 0.2s ease-in-out 0.55s both infinite alternate octa-greenLight;
}

@keyframes octa-changeColor {
  from { background-color: var(--event-accent, #2761c3); }
  to { background-color: var(--event-accent, #27c39f); }
}

@keyframes octa-cornerPulse {
  from { transform: scale(1) rotate(45deg); }
  to { transform: scale(1.15) rotate(45deg); }
}

@keyframes octa-lightEffect {
  from { box-shadow: 1px 1px 5px var(--event-accent, #27c39f); }
  to { box-shadow: 0 0 2px var(--event-accent, #27c39f); }
}

@keyframes octa-greenLight {
  to { box-shadow: inset 0px 0px 32px var(--event-accent, #27c39f); }
}

@keyframes octa-leftArrow8 {
  from { transform: translate(0px); }
  to { transform: translateX(10px); }
}

@keyframes octa-rightArrow8 {
  from { transform: translate(0px); }
  to { transform: translateX(-10px); }
}

/* ── Toast Notifications ── */
#toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  padding: 14px 22px;
  border-radius: 10px;
  font-family: var(--font-pixel-body);
  font-size: 14px;
  color: #fff;
  background: rgba(10, 10, 24, 0.92);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 400px;
}
.toast--show { transform: translateX(0); }
.toast--success { border-color: #22c55e; }
.toast--error { border-color: #ef4444; }
.toast--info { border-color: #d946ef; }