/* ================================================
   PSNA CET CSE AIML DEPARTMENT WEBSITE
   Main Stylesheet
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Inter:wght@300;400;600;700&family=Rajdhani:wght@400;600;700&display=swap');

/* === CSS VARIABLES === */
:root {
  --gold: #F5C518;
  --gold-dark: #d4a80f;
  --deep-blue: #050a1f;
  --mid-blue: #0d1b4b;
  --card-bg: #0a1628;
  --card-border: rgba(0, 212, 255, 0.15);
  --accent: #00d4ff;
  --accent2: #3b82f6;
  --purple: #8b5cf6;
  --glass: rgba(13, 27, 75, 0.6);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --nav-h: 72px;
  --radius: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  background-color: var(--deep-blue);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  overflow-x: hidden;
  min-height: 100vh;
}

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--deep-blue); }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--accent), var(--gold)); border-radius: 10px; }

/* ===========================
   GLOBAL ANIMATED BACKGROUND
   =========================== */
.bg-grid {
  position: fixed; inset: 0; z-index: -2;
  background: radial-gradient(circle at center 20%, #0d1b4b 0%, #050a1f 100%);
  perspective: 800px;
  overflow: hidden;
}
.bg-grid::after {
  content: '';
  position: absolute;
  width: 200vw; height: 200vh;
  left: -50vw;
  top: 0;
  background-image: 
    linear-gradient(rgba(0, 212, 255, 0.4) 3px, transparent 3px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.4) 3px, transparent 3px);
  background-size: 100px 100px;
  transform: rotateX(70deg) translateY(-100px) translateZ(-150px);
  animation: gridMove3D 3s linear infinite;
  transform-origin: center top;
  filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.8));
  mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 80%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 80%);
}
@keyframes gridMove3D {
  0% { transform: rotateX(70deg) translateY(0) translateZ(-150px); }
  100% { transform: rotateX(70deg) translateY(100px) translateZ(-150px); }
}
#globalCanvas { position: fixed; inset: 0; z-index: -1; pointer-events: none; }

/* ===========================
   NAVBAR
   =========================== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h); z-index: 1000;
  background: rgba(5, 10, 31, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,212,255,0.1);
  display: flex; align-items: center;
  padding: 0 2rem;
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(5, 10, 31, 0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
.nav-logo {
  display: flex; align-items: center; gap: 0.75rem;
  text-decoration: none; flex-shrink: 0;
}
.nav-logo img {
  height: 54px;
  width: auto;
  max-width: 130px;
  border-radius: 6px;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(245,197,24,0.4));
}
.nav-logo-text { line-height: 1.2; }
.nav-logo-text .college { font-family: 'Rajdhani', sans-serif; font-size: 0.65rem; color: var(--text-secondary); letter-spacing: 1px; text-transform: uppercase; }
.nav-logo-text .dept { font-family: 'Orbitron', monospace; font-size: 0.85rem; font-weight: 700; color: var(--gold); letter-spacing: 1px; }

.nav-links {
  display: flex; align-items: center; gap: 0.25rem;
  list-style: none; margin-left: auto;
}
.nav-links a {
  display: flex; align-items: center; gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-family: 'Rajdhani', sans-serif;
  font-size: 1rem; font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  letter-spacing: 1px; text-transform: uppercase;
  transition: all var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute; bottom: 4px; left: 50%; right: 50%;
  height: 2px; background: linear-gradient(90deg, var(--accent), var(--gold));
  border-radius: 2px; transition: all var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--accent); background: rgba(0,212,255,0.06);
}
.nav-links a:hover::after, .nav-links a.active::after {
  left: 1rem; right: 1rem;
}
.nav-hamburger {
  display: none; flex-direction: column;
  gap: 5px; cursor: pointer; margin-left: auto; padding: 8px;
}
.nav-hamburger span {
  width: 24px; height: 2px;
  background: var(--accent); border-radius: 2px;
  transition: all var(--transition);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

body.nav-open { overflow: hidden; }

/* ===========================
   HERO SECTION (Slideshow)
   =========================== */
.hero-section {
  margin-top: var(--nav-h);
  position: relative; overflow: hidden;
  height: calc(100vh - var(--nav-h)) !important;
  min-height: 500px;
}
.hero-slides {
  position: relative !important;
  width: 100% !important;
  height: 100% !important;
  overflow: hidden;
}
.hero-slide {
  position: absolute !important;
  top: 0 !important; left: 0 !important;
  right: 0 !important; bottom: 0 !important;
  opacity: 0 !important; 
  visibility: hidden !important;
  transition: opacity 1.2s ease, visibility 1.2s;
  display: flex !important; align-items: center;
  overflow: hidden;
  z-index: 1 !important;
}
.hero-slide.active { 
  opacity: 1 !important; 
  visibility: visible !important;
  z-index: 10 !important;
}
.hero-slide-bg {
  position: absolute !important;
  top: 0 !important; left: 0 !important;
  right: 0 !important; bottom: 0 !important;
  width: 100% !important;
  height: 100% !important;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.slide-img {
  position: absolute !important;
  top: 0 !important; left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  max-height: none !important;
  object-fit: cover !important;
  object-position: center !important;
  display: block !important;
}
.hero-slide-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    to right,
    rgba(5,10,31,0.82) 0%,
    rgba(13,27,75,0.5) 55%,
    rgba(5,10,31,0.25) 100%
  );
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 1200px; margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
  perspective: 1500px;
}
.hero-card-3d {
  background: rgba(5, 10, 31, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 20px;
  padding: 3rem;
  max-width: 650px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.6), inset 0 0 20px rgba(0,212,255,0.1);
  transform: rotateY(12deg) rotateX(4deg) translateZ(0);
  transform-style: preserve-3d;
  transition: all 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.hero-card-3d:hover {
  transform: rotateY(0deg) rotateX(0deg) translateZ(40px);
  box-shadow: 0 30px 60px rgba(0,0,0,0.8), inset 0 0 30px rgba(0,212,255,0.2);
  border-color: rgba(245, 197, 24, 0.4);
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.3);
  border-radius: 50px; padding: 0.4rem 1rem;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.85rem; font-weight: 700; color: var(--accent);
  letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 1.2rem;
  animation: badgeFloat 3s ease-in-out infinite;
}
@keyframes badgeFloat {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}
.hero-badge span { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: blink 1.5s infinite; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0.2; } }

.hero-title {
  font-family: 'Orbitron', monospace;
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900; line-height: 1.1;
  background: linear-gradient(135deg, #ffffff 0%, var(--accent) 60%, var(--gold) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 1rem;
}
.hero-subtitle {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(1rem, 2vw, 1.4rem);
  color: var(--text-secondary); letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 1.5rem;
}
.hero-desc {
  font-size: 1rem; color: var(--text-secondary);
  max-width: 520px; line-height: 1.7; margin-bottom: 2rem;
}
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  padding: 0.8rem 2rem;
  background: linear-gradient(135deg, var(--accent2), #0ea5e9);
  color: white; border: none; border-radius: 50px;
  font-family: 'Rajdhani', sans-serif; font-size: 1rem; font-weight: 700;
  letter-spacing: 1px; cursor: pointer; text-decoration: none;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(59,130,246,0.4);
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.6);
}
.btn-outline {
  padding: 0.8rem 2rem;
  background: transparent;
  color: var(--gold); border: 1px solid var(--gold);
  border-radius: 50px;
  font-family: 'Rajdhani', sans-serif; font-size: 1rem; font-weight: 700;
  letter-spacing: 1px; cursor: pointer; text-decoration: none;
  transition: all var(--transition);
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-outline:hover {
  background: rgba(245,197,24,0.1);
  box-shadow: 0 4px 20px rgba(245,197,24,0.3);
  transform: translateY(-3px);
}

/* Slide Indicators */
.slide-indicators {
  position: absolute; bottom: 30px; left: 50%;
  transform: translateX(-50%); display: flex; gap: 8px; z-index: 10;
}
.slide-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.3); cursor: pointer;
  transition: all var(--transition); border: none;
}
.slide-dot.active {
  background: var(--accent); width: 24px; border-radius: 4px;
  box-shadow: 0 0 10px var(--accent);
}
.slide-arrows {
  position: absolute; bottom: 25px; right: 2rem; z-index: 10;
  display: flex; gap: 0.5rem;
}
.slide-arr {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.3);
  color: var(--accent); cursor: pointer; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.slide-arr:hover {
  background: rgba(0,212,255,0.2);
  box-shadow: 0 0 15px rgba(0,212,255,0.3);
}

/* ===========================
   SECTION GENERIC
   =========================== */
.section { padding: 5rem 2rem; }
.container { max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-tag {
  display: inline-block;
  font-family: 'Rajdhani', sans-serif; font-size: 0.8rem;
  font-weight: 700; letter-spacing: 4px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 0.75rem;
}
.section-tag::before, .section-tag::after { content: '— '; color: var(--gold); }
.section-title {
  font-family: 'Orbitron', monospace;
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  background: linear-gradient(135deg, #ffffff, var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1.2; margin-bottom: 1rem;
}
.section-line {
  width: 60px; height: 3px; margin: 0 auto;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  border-radius: 2px;
}

/* ===========================
   GLASS CARD
   =========================== */
.glass-card {
  background: var(--glass);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
  transition: all var(--transition);
  overflow: hidden;
}
.glass-card:hover {
  border-color: rgba(0,212,255,0.35);
  box-shadow: 0 8px 32px rgba(0,212,255,0.1), 0 0 0 1px rgba(0,212,255,0.08);
  transform: translateY(-4px);
}

/* ===========================
   STATS SECTION
   =========================== */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}
.stat-card {
  text-align: center; padding: 2rem 1rem;
  background: linear-gradient(135deg, rgba(13,27,75,0.8), rgba(5,10,31,0.8));
  border: 1px solid rgba(0,212,255,0.12);
  border-radius: var(--radius);
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
}
.stat-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,212,255,0.15); }
.stat-num {
  font-family: 'Orbitron', monospace; font-size: 2.5rem; font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-label { font-family: 'Rajdhani', sans-serif; font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); letter-spacing: 2px; text-transform: uppercase; margin-top: 0.5rem; }
.stat-icon { font-size: 2rem; margin-bottom: 0.75rem; }

/* ===========================
   FACULTY / HOD SECTION
   =========================== */
.faculty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}
.faculty-card {
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative; overflow: hidden;
}
.faculty-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.03), rgba(245,197,24,0.03));
}
.faculty-avatar {
  width: 90px; height: 90px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 2.5rem;
  border: 3px solid rgba(0,212,255,0.3);
  position: relative; z-index: 1;
  transition: all var(--transition);
}
.faculty-card:hover .faculty-avatar {
  box-shadow: 0 0 25px rgba(0,212,255,0.4);
  transform: scale(1.05);
}
.faculty-name {
  font-family: 'Rajdhani', sans-serif; font-size: 1.1rem; font-weight: 700;
  color: white; margin-bottom: 0.3rem;
}
.faculty-role {
  font-size: 0.8rem; color: var(--accent);
  font-weight: 600; letter-spacing: 1px; text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.faculty-qual {
  font-size: 0.8rem; color: var(--text-secondary); line-height: 1.4;
}
.hod-card {
  background: linear-gradient(135deg, rgba(13,27,75,0.9), rgba(5,10,31,0.9));
  border: 1px solid rgba(245,197,24,0.3);
  border-radius: var(--radius); padding: 2.5rem;
  display: flex; gap: 2rem; align-items: center;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.hod-avatar {
  width: 120px; height: 120px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--gold), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem;
  border: 4px solid var(--gold);
  box-shadow: 0 0 30px rgba(245,197,24,0.3);
}
.hod-info { flex: 1; }
.hod-tag {
  display: inline-block; background: linear-gradient(135deg, rgba(245,197,24,0.2), rgba(0,212,255,0.1));
  border: 1px solid rgba(245,197,24,0.3);
  border-radius: 50px; padding: 0.3rem 1rem;
  font-family: 'Rajdhani', sans-serif; font-size: 0.75rem; font-weight: 700;
  color: var(--gold); letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.hod-name { font-family: 'Orbitron', monospace; font-size: 1.5rem; font-weight: 700; color: white; margin-bottom: 0.4rem; }
.hod-title { font-family: 'Rajdhani', sans-serif; font-size: 1rem; color: var(--accent); font-weight: 600; margin-bottom: 0.75rem; }
.hod-msg { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; font-style: italic; }
.gold-text { color: var(--gold); }

/* ===========================
   ASSOCIATION SECTION
   =========================== */
.assoc-item {
  padding: 1.5rem;
  display: flex; align-items: center; gap: 1.25rem;
}
.assoc-icon {
  width: 56px; height: 56px; flex-shrink: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(245,197,24,0.1));
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  transition: all var(--transition);
}
.assoc-card:hover .assoc-icon {
  background: linear-gradient(135deg, rgba(0,212,255,0.25), rgba(245,197,24,0.15));
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
  transform: rotate(10deg);
}
.assoc-title { font-family: 'Rajdhani', sans-serif; font-size: 1.1rem; font-weight: 700; color: white; margin-bottom: 0.3rem; }
.assoc-desc { font-size: 0.85rem; color: var(--text-secondary); }

/* ===========================
   EVENTS SECTION
   =========================== */
.poster-wrapper {
  max-width: 600px; margin: 0 auto 3rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid rgba(245,197,24,0.3);
  box-shadow: 0 0 50px rgba(245,197,24,0.15), 0 0 100px rgba(0,212,255,0.08);
  position: relative;
}
.poster-wrapper img { width: 100%; display: block; }
.poster-glow {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(245,197,24,0.05));
  pointer-events: none;
}

.events-intro {
  background: linear-gradient(135deg, rgba(13,27,75,0.8), rgba(5,10,31,0.8));
  border: 1px solid rgba(245,197,24,0.2);
  border-radius: var(--radius); padding: 2rem;
  margin-bottom: 2.5rem; text-align: center;
}
.events-intro h3 {
  font-family: 'Orbitron', monospace; font-size: 1.2rem; font-weight: 700; color: var(--gold);
  margin-bottom: 0.5rem;
}
.events-intro p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }
.symposium-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--gold), #f97316);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  font-family: 'Orbitron', monospace; font-size: 2rem; font-weight: 900;
  margin-bottom: 0.5rem;
}

.event-cols {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
}
.event-col-title {
  font-family: 'Orbitron', monospace; font-size: 1.1rem; font-weight: 700;
  padding: 1rem 1.5rem;
  display: flex; align-items: center; gap: 0.75rem;
}
.tech-title { color: var(--accent); }
.nontech-title { color: #a855f7; }
.event-list { list-style: none; padding: 0 1.5rem 1.5rem; }
.event-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.8rem 0; border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 0.95rem; color: var(--text-primary); transition: all var(--transition);
}
.event-item:last-child { border-bottom: none; }
.event-item:hover { color: var(--accent); transform: translateX(4px); }
.event-item::before {
  content: '⟩';
  color: var(--accent); font-size: 0.8rem; flex-shrink: 0;
  transition: transform var(--transition);
}
.event-item:hover::before { transform: translateX(4px); }
.event-nontech .event-item::before { color: #a855f7; }
.event-tech { border: 1px solid rgba(0,212,255,0.15); border-radius: var(--radius); overflow: hidden; }
.event-nontech { border: 1px solid rgba(168,85,247,0.15); border-radius: var(--radius); overflow: hidden; }

.register-section {
  margin-top: 2.5rem; text-align: center;
  padding: 2.5rem;
  background: linear-gradient(135deg, rgba(0,212,255,0.05), rgba(245,197,24,0.05));
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: var(--radius);
}
.register-section h3 { font-family: 'Orbitron', monospace; font-size: 1.3rem; color: white; margin-bottom: 0.5rem; }
.register-section p { color: var(--text-secondary); margin-bottom: 1.5rem; }
.btn-register {
  display: inline-flex; align-items: center; gap: 0.75rem;
  padding: 1rem 2.5rem;
  background: linear-gradient(135deg, #F5C518, #f97316);
  color: #0a0e27; font-family: 'Orbitron', monospace;
  font-size: 1rem; font-weight: 700; letter-spacing: 2px;
  border-radius: 50px; text-decoration: none;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(245,197,24,0.4);
  border: none; cursor: pointer;
}
.btn-register:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 10px 40px rgba(245,197,24,0.6);
}
/* ===========================
   NEWS TIMELINE
   =========================== */
.timeline { position: relative; padding-left: 2.5rem; }
.timeline::before {
  content: '';
  position: absolute; left: 0.5rem; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--gold), var(--purple));
  border-radius: 2px;
}
.timeline-item {
  position: relative; margin-bottom: 2rem;
  padding: 1.5rem;
}
.timeline-item::before {
  content: '';
  position: absolute; left: -2.15rem; top: 1.75rem;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--deep-blue);
  box-shadow: 0 0 10px var(--accent);
}

.timeline-date {
  font-family: 'Orbitron', monospace; font-size: 0.7rem;
  color: var(--accent); letter-spacing: 2px; margin-bottom: 0.4rem;
}

.timeline-title { font-family: 'Rajdhani', sans-serif; font-size: 1.1rem; font-weight: 700; color: white; margin-bottom: 0.4rem; }
.timeline-text { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6; }

/* ===========================
   ABOUT PAGE
   =========================== */

.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center;
}

.about-text p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 1rem; font-size: 0.95rem; }
.about-vision {
  display: flex; gap: 1rem; margin-top: 1.5rem;
}

.vision-item {
  flex: 1; padding: 1.25rem;
  border: 1px solid rgba(0,212,255,0.12);
  border-radius: 12px;
  background: rgba(13,27,75,0.4);
}

.vision-item h4 { font-family: 'Orbitron', monospace; font-size: 0.85rem; color: var(--gold); margin-bottom: 0.5rem; }
.vision-item p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.5; }
.about-visual {
  display: grid; grid-template-rows: repeat(3, 1fr); gap: 1rem;
}

.about-visual-item {
  padding: 1.25rem 1.5rem;
  background: rgba(13,27,75,0.6);
  border: 1px solid rgba(0,212,255,0.1); border-radius: 12px;
  display: flex; align-items: center; gap: 1rem;
}

.about-visual-icon { font-size: 1.8rem; }
.about-visual-text h4 { font-family: 'Rajdhani', sans-serif; font-size: 1rem; font-weight: 700; color: white; }
.about-visual-text p { font-size: 0.8rem; color: var(--text-secondary); }

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: rgba(5,10,31,0.97);
  border-top: 1px solid rgba(0,212,255,0.1);
  padding: 3rem 2rem 1.5rem;
}
.footer-grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 2rem;
}
.footer-brand .nav-logo { margin-bottom: 1rem; }
.footer-brand p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }
.footer-col h4 {
  font-family: 'Rajdhani', sans-serif; font-size: 0.85rem; font-weight: 700;
  color: var(--accent); letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col ul li a { text-decoration: none; color: var(--text-muted); font-size: 0.875rem; transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-contact span { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.footer-contact span strong { color: var(--text-secondary); }
.footer-bottom {
  max-width: 1200px; margin: 2rem auto 0;
  padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.05);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
  font-size: 0.8rem; color: var(--text-muted);
}
.footer-bottom span { color: var(--accent); }

/* ===========================
   PAGE VISIBILITY ( SPA )
   =========================== */

.page { display: none; }
.page.active { display: block; }

/* ===========================
   FLOATING ROBOT (corner)
   =========================== */

.float-robot {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 100;
  cursor: pointer; animation: robotCornerFloat 3s ease-in-out infinite;
}

@keyframes robotCornerFloat {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.float-robot svg { filter: drop-shadow(0 0 12px var(--accent)); }
.float-robot:hover svg { filter: drop-shadow(0 0 25px var(--accent)); }

/* ===========================
   SCROLL TO TOP
   =========================== */
.scroll-top {
  position: fixed; bottom: 7rem; right: 2rem; z-index: 100;
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.3);
  color: var(--accent); cursor: pointer; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  opacity: 0; pointer-events: none;
}
.scroll-top.show { opacity: 1; pointer-events: all; }
.scroll-top:hover { background: rgba(0,212,255,0.2); box-shadow: 0 0 15px rgba(0,212,255,0.3); }

/* ===========================
   ANIMATIONS
   =========================== */
.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }

/* ===========================
   RESPONSIVE
   =========================== */

/* ---- Tablet (≤900px) ---- */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .event-cols { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .hero-content { padding: 0 1.5rem; }

  .hod-card { padding: 1.75rem; }
}

/* ---- Mobile (≤768px) ---- */
@media (max-width: 768px) {
  /* --- Navbar --- */
  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;          /* fixed so it overlays everything */
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(5,10,31,0.98);
    border-bottom: 1px solid rgba(0,212,255,0.1);
    padding: 1rem;
    gap: 0.25rem;
    z-index: 999;
    max-height: calc(100vh - var(--nav-h));
    overflow-y: auto;
  }
  .nav-links.open { display: flex; }
  .nav-hamburger { display: flex; margin-left: auto; }
  .responsive-grid { grid-template-columns: 1fr !important; }

  /* Scale down logo area on mobile */
  .nav-logo-text { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; max-width: min-content; }
  .nav-logo-text .dept { font-size: 0.6rem; letter-spacing: 0.5px; white-space: normal; max-width: 120px; line-height: 1.1; }
  .nav-logo img { height: 36px; max-width: 80px; }
  .navbar { padding: 0 0.75rem; justify-content: space-between; }
  .nav-hamburger { margin-left: auto; z-index: 1001; }

  /* --- Hero --- */
  .hero-section {
    height: calc(100vh - var(--nav-h)) !important;
    min-height: 480px !important;
  }
  .hero-content { padding: 0 1rem; }
  .hero-card-3d { 
    padding: 1.5rem; 
    transform: rotateY(5deg) rotateX(2deg) translateZ(0); 
  }
  .hero-card-3d:hover {
    transform: rotateY(0deg) rotateX(0deg) translateZ(10px);
  }
  .hero-title { font-size: clamp(1.5rem, 8vw, 2.5rem); line-height: 1.2; margin-bottom: 0.75rem; }
  .hero-subtitle { font-size: 0.85rem; letter-spacing: 1px; }
  .hero-desc { font-size: 0.85rem; max-width: 100%; margin-bottom: 1.5rem; }
  .hero-btns { flex-direction: column; gap: 0.6rem; align-items: stretch; }
  .btn-primary, .btn-outline { justify-content: center; width: 100%; max-width: none; padding: 0.75rem 1.5rem; }

  .slide-arrows { display: none; } /* hide desktop arrows on small screens */

  /* --- News Ticker --- */
  .news-ticker-bar { padding: 0.5rem 1rem; gap: 0.5rem; }
  .ticker-label { font-size: 0.55rem; padding: 0.2rem 0.5rem; }

  /* --- Sections --- */
  .section { padding: 3rem 1.25rem; }
  .section-title { font-size: clamp(1.25rem, 6vw, 1.8rem); }
  .section-header { margin-bottom: 2.5rem; }

  /* --- Stats Grid --- */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .stat-num { font-size: 2rem; }

  /* --- HOD Card --- */
  .hod-card {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem 1rem;
    gap: 1.25rem;
  }
  .hod-avatar { width: 90px; height: 90px; font-size: 2.5rem; }
  .hod-name { font-size: 1.2rem; }

  /* --- About --- */
  .about-vision { flex-direction: column; }
  .about-grid { gap: 2rem; }

  /* --- Footer --- */
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer { padding: 2rem 1rem 1rem; }
  .footer-bottom { flex-direction: column; text-align: center; }

  /* --- Event columns --- */
  .event-cols { grid-template-columns: 1fr; gap: 1.25rem; }

  /* --- Event cards (inside inline grids) --- */
  .event-card-actions { gap: 0.4rem; }
  .btn-ev-about, .btn-ev-register { font-size: 0.5rem; padding: 0.25rem 0.6rem; }

  /* --- Register section --- */
  .register-section { padding: 1.5rem 1rem; }
  .register-section h3 { font-size: 1.1rem; }
  .btn-register { padding: 0.85rem 1.5rem; font-size: 0.85rem; width: 100%; text-align: center; justify-content: center; }

  /* --- Event modal --- */
  .event-modal-box { padding: 1.5rem 1rem; border-radius: 14px; }
  .modal-info-grid { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .modal-event-title { font-size: 1.25rem; }

  /* --- Floating elements --- */
  .float-robot { bottom: 1rem; right: 1rem; }
  .float-robot svg { width: 48px; height: 48px; }
  .scroll-top { bottom: 5rem; right: 1rem; }

  /* --- Timeline --- */
  .timeline { padding-left: 2rem; }
  .timeline-item { padding: 1.25rem 1rem; }

  /* POster wrapper */
  .poster-wrapper { max-width: 100%; }

  /* Faculty grid */
  .faculty-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .faculty-card { padding: 1.5rem 1rem; max-width: 320px; margin: 0 auto; }
  .faculty-avatar { width: 80px; height: 80px; font-size: 2.2rem; }
}

/* ---- Small Mobile (≤480px) ---- */
@media (max-width: 480px) {
  :root { --nav-h: 64px; }

  /* --- Navbar --- */
  .navbar { padding: 0 0.75rem; }
  .nav-logo-text .dept { font-size: 0.6rem; max-width: 110px; }
  .nav-logo img { height: 34px; }
  .nav-logo img { height: 36px; max-width: 80px; }

  /* --- Hero --- */
  .hero-section { min-height: 420px; }
  .hero-badge { font-size: 0.72rem; padding: 0.3rem 0.75rem; }
  .hero-title { font-size: clamp(1.4rem, 8vw, 2rem); }
  .hero-desc { font-size: 0.83rem; }

  /* --- Sections --- */
  .section { padding: 2.5rem 0.85rem; }
  .section-header { margin-bottom: 2rem; }
  .section-tag { font-size: 0.72rem; }

  /* --- Stats: single column on tiny screens --- */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .stat-card { padding: 1.25rem 0.75rem; }
  .stat-num { font-size: 1.7rem; }
  .stat-label { font-size: 0.72rem; letter-spacing: 1px; }

  /* --- HOD card --- */
  .hod-card { padding: 1.25rem 0.85rem; }
  .hod-msg { font-size: 0.83rem; }

  /* --- Buttons --- */
  .btn-primary, .btn-outline {
    padding: 0.7rem 1.25rem;
    font-size: 0.9rem;
    width: 100%;
    max-width: 100%;
  }

  /* --- Event list cards --- */
  .event-card { padding: 0.75rem 0.85rem; }
  .event-card-name { font-size: 0.88rem; }
  .btn-ev-about, .btn-ev-register { font-size: 0.48rem; padding: 0.22rem 0.55rem; }

  /* --- Prizes grid (inline) --- */
  /* Force it to 2-col. The inline style uses auto-fit minmax(200px,1fr).
     We override with explicit 2-col below via grid-template-columns. */
  [style*="minmax(200px"] { grid-template-columns: repeat(2, 1fr) !important; }

  /* --- Symposium intro: wrap date/venue row --- */
  [style*="display:flex"][style*="gap:1.5rem"] { gap: 0.85rem !important; }

  /* --- Event modal --- */
  .event-modal-box { padding: 1.25rem 0.85rem; max-height: 92vh; }
  .modal-info-grid { grid-template-columns: 1fr; }
  .modal-register-btn { font-size: 0.65rem; padding: 0.75rem 1rem; }

  /* --- Footer --- */
  .footer { padding: 1.5rem 0.85rem 1rem; }

  /* --- Float Robot & scroll top --- */
  .float-robot { bottom: 0.75rem; right: 0.75rem; }
  .float-robot svg { width: 40px; height: 40px; }
  .scroll-top { bottom: 4.5rem; right: 0.75rem; width: 36px; height: 36px; font-size: 0.9rem; }

  /* --- About vision items --- */
  .vision-item { padding: 1rem; }
  .vision-item h4 { font-size: 0.8rem; }

  /* --- Faculty grid: 2 cols on small --- */
  .faculty-grid { grid-template-columns: repeat(2, 1fr); }
  .faculty-avatar { width: 60px; height: 60px; font-size: 1.6rem; }
  .faculty-name { font-size: 0.9rem; }
  .faculty-role { font-size: 0.72rem; }
  .faculty-qual { font-size: 0.72rem; }

  /* --- Timeline --- */
  .timeline { padding-left: 1.5rem; }
  .timeline-item { padding: 1rem 0.85rem; }
  .timeline-title { font-size: 0.95rem; }
  .timeline-text { font-size: 0.82rem; }

  /* --- Splash screen --- */
  .sp-badge { font-size: 0.75rem; padding: 0.35rem 0.85rem; letter-spacing: 1.5px; }
  .sp-title { font-size: clamp(1.3rem, 8vw, 2rem); letter-spacing: 1px; }
  #splashOverlay > div[style*="150px"] { width: 110px !important; height: 110px !important; }

  /* --- Ticker --- */
  .news-ticker-bar { flex-wrap: nowrap; padding: 0.4rem 0.75rem; }
  .ticker-label { display: none; } /* hide the LIVE badge on tiny screens */
}

/* Fix inline-style grids for associations & about on narrow screens */
@media (max-width: 600px) {
  [style*="minmax(300px"] { grid-template-columns: 1fr !important; }
  [style*="minmax(240px"] { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="minmax(170px"] { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="minmax(155px"] { grid-template-columns: repeat(2, 1fr) !important; }
}

/* ===========================
   SLIDESHOW IMAGE BACKGROUNDS
   =========================== */
.hero-slide-bg {
  position: absolute; inset: 0;
  overflow: hidden;
}
.slide-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transform: scale(1.08);
  transition: transform 8s ease;
}
/* Ken Burns zoom-in on active slide */
.hero-slide.active .slide-img {
  transform: scale(1);
}
/* Reset when slide is inactive */
.hero-slide:not(.active) .slide-img {
  transform: scale(1.08);
  transition: none;
}