/*
Theme Name: IEEE AgenticAI Summit 2026
Theme URI: https://github.com/pavanmgowda20/agenticai-sample
Author: IEEE AgenticAI Team
Author URI: https://github.com/pavanmgowda20/agenticai-sample
Description: Premium WordPress theme for IEEE AgenticAI Summit 2026 landing page featuring modern typography, glassmorphism cards, countdown timer, and responsive design system.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ieee-agenticai
Tags: landing-page, summit, ieee, conference, responsive-layout, dark-mode, custom-menu
*/

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* --- DESIGN TOKENS --- */
:root {
  --bg-primary: #001833;
  --bg-secondary: #000f21;
  --bg-card: rgba(0, 28, 61, 0.6);
  --bg-card-hover: rgba(0, 40, 87, 0.85);
  
  --color-text-primary: #ffffff;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #64748b;
  
  --accent-cyan: #38bdf8;
  --accent-purple: #cca043;
  --accent-pink: #f97316;
  
  --glow-cyan: 0 0 15px rgba(56, 189, 248, 0.4);
  --glow-purple: 0 0 15px rgba(204, 160, 67, 0.4);
  --glow-pink: 0 0 15px rgba(249, 115, 22, 0.4);
  
  --border-glass: 1px solid rgba(255, 255, 255, 0.08);
  --border-glow-cyan: 1px solid rgba(56, 189, 248, 0.5);
  --border-glow-purple: 1px solid rgba(204, 160, 67, 0.5);
  
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  font-family: var(--font-body);
  color: var(--color-text-primary);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  position: relative;
  background: radial-gradient(circle at 50% 0%, #004b87 0%, var(--bg-primary) 80%);
}

/* Cyberpunk Dotted Grid Background */
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 0),
    radial-gradient(rgba(56, 189, 248, 0.02) 1.5px, transparent 0);
  background-size: 40px 40px, 80px 80px;
  background-position: 0 0, 20px 20px;
  pointer-events: none;
  z-index: 0;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, .nav-logo {
  font-family: var(--font-display);
}

h1 {
  letter-spacing: -0.02em;
}

h2 {
  letter-spacing: -0.015em;
}

h3, h4 {
  letter-spacing: -0.015em;
}

h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  text-align: center;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-text-primary) 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 15%;
  width: 70%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-purple), transparent);
  border-radius: 2px;
}

p {
  color: var(--color-text-secondary);
  line-height: 1.625;
  font-size: 1.05rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

/* --- LAYOUT & CONTAINERS --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

section {
  padding: 6rem 0;
  scroll-margin-top: 100px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- NAVBAR --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(0, 24, 51, 0.7);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition-smooth);
}

header.scrolled {
  background: rgba(0, 20, 43, 0.9);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-brand span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  background: linear-gradient(90deg, #fff, var(--color-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent-cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.3);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: var(--transition-fast);
  box-shadow: var(--glow-cyan);
}

.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}

.hero-partner-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3.5rem;
  margin-bottom: 4rem;
  width: 100%;
  position: relative;
  z-index: 5;
}

.hero-partner-logo {
  height: 75px;
  object-fit: contain;
  transition: var(--transition-smooth);
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4));
}

.hero-partner-logo.logo-img {
  height: 75px;
}

.hero-partner-logo.logo-yp {
  height: 60px;
}

.hero-partner-logo:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 15px rgba(56, 189, 248, 0.25));
}

/* --- HERO SECTION --- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 140px;
  padding-bottom: 4rem;
  overflow: hidden;
  opacity: 1; /* Hero is visible immediately */
  transform: none;
}

/* Smooth fade from hero dark to white sections — starts below the countdown timer */
.hero-section::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 80px;
  background: linear-gradient(to bottom, transparent, #ffffff);
  pointer-events: none;
  z-index: 2;
}

.hero-bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(157, 78, 221, 0.15) 0%, transparent 70%);
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  z-index: 3;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-tagline {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-tagline::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
  border-radius: 50%;
}

.hero-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 4.2rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  color: #ffffff;
  background: none;
  -webkit-text-fill-color: unset;
  -webkit-background-clip: unset;
  filter: drop-shadow(0 2px 10px rgba(0, 0, 0, 0.3));
}

.hero-title span {
  color: var(--accent-cyan);
}

.hero-subtagline {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 2.25rem;
}

.hero-desc {
  margin-bottom: 2rem;
  max-width: 520px;
  color: #ffffff;
}

.hero-details {
  display: flex;
  gap: 2rem;
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
}

.hero-detail-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #f8fafc; /* Make it a brighter, high contrast off-white */
  font-weight: 700;
}

.hero-detail-item i {
  color: var(--accent-cyan);
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

/* Premium Button Styling */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2.25rem;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: #ffffff;
  color: #002147;
  border: none;
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(56, 189, 248, 0.4);
  background: #e0f2fe;
  color: #001833;
}

/* Card Registration Buttons - High Contrast Blue */
.committee-card .btn-primary {
  background: #0284c7;
  color: #ffffff;
  border: 1px solid #0284c7;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.committee-card .btn-primary:hover {
  background: #0369a1;
  border-color: #0369a1;
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.5);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: 0.6s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text-primary);
  border: var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Video Logo Container */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  align-self: flex-start;
  margin-top: 4.5rem;
}

.video-container-wrapper {
  position: relative;
  width: 100%;
  max-width: 520px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.1), rgba(204, 160, 67, 0.1));
  padding: 6px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  transition: var(--transition-smooth);
}

.video-container-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 24px;
  padding: 1.5px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
  opacity: 0.8;
  transition: var(--transition-smooth);
}

.video-container-wrapper:hover {
  transform: scale(1.03) rotate(0.5deg);
  box-shadow: 
    0 20px 50px rgba(0, 0, 0, 0.5),
    0 0 30px rgba(56, 189, 248, 0.15),
    0 0 50px rgba(204, 160, 67, 0.15);
}

.video-container-wrapper:hover::after {
  opacity: 1;
  background: linear-gradient(135deg, var(--accent-pink), var(--accent-cyan));
}

.video-logo {
  width: 100%;
  height: auto;
  border-radius: 18px;
  display: block;
}

/* Static scanline overlay for futuristic video effect */
.video-scanline {
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  bottom: 6px;
  border-radius: 18px;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.12) 50%
  );
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 2;
  opacity: 0.4;
}

/* Round Starting Soon Stamp Overlay */
.starting-soon-stamp {
  position: absolute;
  top: -18px;
  right: -18px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #002247 0%, #000a18 100%);
  border: 2px dashed var(--accent-cyan);
  outline: 2px solid rgba(56, 189, 248, 0.3);
  outline-offset: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 10;
  box-shadow: 
    0 0 20px rgba(56, 189, 248, 0.4),
    0 8px 25px rgba(0, 0, 0, 0.6);
  transform: rotate(-12deg);
  animation: stampSlam 0.75s cubic-bezier(0.175, 0.885, 0.32, 1.275) 0.5s backwards;
  transition: var(--transition-smooth);
}

@keyframes stampSlam {
  0% {
    opacity: 0;
    transform: scale(3.5) rotate(-35deg);
    filter: blur(8px);
    box-shadow: 0 0 0 rgba(56, 189, 248, 0);
  }
  65% {
    opacity: 1;
    transform: scale(0.88) rotate(-12deg);
    filter: blur(0px);
    box-shadow: 
      0 0 35px rgba(56, 189, 248, 0.8),
      0 12px 30px rgba(0, 0, 0, 0.8);
  }
  82% {
    transform: scale(1.08) rotate(-12deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) rotate(-12deg);
    box-shadow: 
      0 0 20px rgba(56, 189, 248, 0.4),
      0 8px 25px rgba(0, 0, 0, 0.6);
  }
}

.starting-soon-stamp .stamp-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.72rem;
  line-height: 1.15;
  color: var(--accent-cyan);
  letter-spacing: 0.08em;
  text-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
}

.video-container-wrapper:hover .starting-soon-stamp {
  transform: rotate(0deg) scale(1.08);
  border-color: var(--accent-pink);
  outline-color: rgba(249, 115, 22, 0.4);
}

/* Glow ring effects */
.glow-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.05);
  pointer-events: none;
}

.glow-ring-1 {
  width: 110%;
  height: 110%;
  animation: rotate-clockwise 40s linear infinite;
}

.glow-ring-2 {
  width: 125%;
  height: 125%;
  border: 1px solid rgba(0, 240, 255, 0.03);
  animation: rotate-counter 60s linear infinite;
}

/* --- COUNTDOWN TIMER --- */
.countdown-box {
  display: flex;
  gap: 1.25rem;
  background: #000c1a !important; /* Solid dark navy background for 100% visibility against white fade background */
  border: 2px solid var(--accent-cyan) !important; /* Strong cyan neon border */
  padding: 1.25rem 2rem;
  border-radius: 16px;
  width: max-content;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.4), 0 0 25px rgba(56, 189, 248, 0.15) !important;
}

.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 60px;
}

.countdown-val {
  font-family: var(--font-display);
  font-size: 2.0rem; /* Slightly reduced size */
  font-weight: 800;
  color: #38bdf8 !important; /* Solid bright cyan */
  text-shadow: 0 0 12px rgba(56, 189, 248, 0.5) !important; /* Strong glow */
}

.countdown-lbl {
  font-size: 0.7rem; /* Slightly reduced labels */
  color: #ffffff !important; /* Solid white label for maximum readability */
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 0.25rem;
  font-weight: 700;
}

.countdown-divider {
  font-family: var(--font-display);
  font-size: 2.0rem; /* Slightly reduced divider size */
  color: var(--accent-cyan) !important; /* Glowing cyan divider */
  align-self: center;
  opacity: 0.8;
}

/* --- ABOUT SECTION --- */
.about-text-content {
  max-width: 850px;
  margin: 3.5rem auto 0;
  text-align: center;
}

.about-text-content p {
  margin-bottom: 2rem;
  font-size: 1.15rem;
  line-height: 1.8;
}

.about-text-content p.lead {
  font-size: 1.35rem;
  color: #ffffff;
  font-weight: 500;
  line-height: 1.7;
}

.about-text-content p:last-child {
  margin-bottom: 0;
}

/* --- PREMIUM EMPTY CARDS SYSTEM --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

/* Glowing Border Glassmorphic Empty Cards */
.empty-card {
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  min-height: 250px;
  transition: var(--transition-smooth);
  overflow: hidden;
  cursor: pointer;
}

/* Dotted glowing cyber-border for empty state */
.empty-card::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 10px;
  border: 1px dashed rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.empty-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-5px);
  box-shadow: 
    0 15px 35px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(56, 189, 248, 0.05);
}

.empty-card:hover::before {
  border-color: rgba(0, 240, 255, 0.4);
  border-style: dotted;
  transform: scale(0.98);
}

.empty-card-icon {
  font-size: 2.2rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  transition: var(--transition-smooth);
}

.empty-card:hover .empty-card-icon {
  color: var(--accent-cyan);
  transform: scale(1.1);
  text-shadow: var(--glow-cyan);
}

.empty-card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text-secondary);
  transition: var(--transition-smooth);
}

.empty-card:hover .empty-card-title {
  color: #fff;
}

.empty-card-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  max-width: 220px;
}

.empty-card-action {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-purple);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.5rem 1.25rem;
  background: rgba(157, 78, 221, 0.06);
  border: 1px solid rgba(157, 78, 221, 0.2);
  border-radius: 20px;
  transition: var(--transition-smooth);
}

.empty-card:hover .empty-card-action {
  color: var(--bg-primary);
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

/* Tiered styling for Sponsor Cards */
.sponsor-card-platinum {
  border-color: rgba(255, 255, 255, 0.15);
}
.sponsor-card-platinum:hover {
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 15px 35px rgba(255, 255, 255, 0.05);
}
.sponsor-card-platinum:hover .empty-card-action {
  background: #fff;
  border-color: #fff;
  color: var(--bg-primary);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.sponsor-card-gold {
  border-color: rgba(212, 175, 55, 0.15);
}
.sponsor-card-gold:hover {
  border-color: rgba(212, 175, 55, 0.5);
  box-shadow: 0 15px 35px rgba(212, 175, 55, 0.05);
}
.sponsor-card-gold:hover .empty-card-action {
  background: #d4af37;
  border-color: #d4af37;
  color: var(--bg-primary);
  box-shadow: 0 0 15px rgba(212, 175, 55, 0.3);
}

/* Keynote Speakers specific card design */
.speaker-card-placeholder {
  min-height: 320px;
}

.speaker-avatar-slot {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.8rem;
  transition: var(--transition-smooth);
}

.empty-card:hover .speaker-avatar-slot {
  border-color: var(--accent-purple);
  background: rgba(157, 78, 221, 0.08);
  color: var(--accent-purple);
  box-shadow: inset 0 0 15px rgba(157, 78, 221, 0.1);
}

/* --- COMMITTEES TABS SECTION --- */
.committees-container {
  margin-top: 3.5rem;
}

.tab-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.02);
  border: var(--border-glass);
  color: var(--color-text-secondary);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  padding: 0.8rem 2.2rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.tab-btn.active {
  background: rgba(204, 160, 67, 0.15);
  border-color: var(--accent-purple);
  color: #fff;
  box-shadow: 0 0 20px rgba(204, 160, 67, 0.25);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fade-in-up 0.5s ease-out forwards;
}

.committee-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2.5rem;
  margin-top: 1.5rem;
}

.committee-card {
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: 16px;
  padding: 2.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  width: 280px;
  max-width: 100%;
  box-sizing: border-box;
}

/* Hierarchy Group Styles */
.hierarchy-group {
  margin-bottom: 4rem;
  width: 100%;
}

.hierarchy-group:last-child {
  margin-bottom: 0;
}

.hierarchy-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-align: center;
  margin-bottom: 1rem;
}

.committee-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(56, 189, 248, 0.25);
  transform: translateY(-5px);
  box-shadow: 
    0 15px 35px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(56, 189, 248, 0.05);
}

.member-image-wrapper {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  padding: 3px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  margin-bottom: 1.25rem;
  overflow: hidden;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
  transition: var(--transition-smooth);
}

.committee-card:hover .member-image-wrapper {
  transform: scale(1.05) rotate(2deg);
  background: linear-gradient(135deg, var(--accent-pink), var(--accent-cyan));
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.2);
}

.member-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.placeholder-wrapper {
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.placeholder-icon {
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
}

.committee-card:hover .placeholder-icon {
  color: var(--accent-cyan);
}

.member-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: #ffffff;
}

.member-role {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  min-height: 2.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
}

.member-designation {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  max-width: 200px;
}

/* --- SCHEDULE / EVENT FLOW --- */
.schedule-container {
  max-width: 800px;
  margin: 0 auto;
}

.timeline-flow {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 1rem 0;
}

.timeline-item {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  position: relative;
}

.timeline-badge {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid rgba(56, 189, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.1);
  flex-shrink: 0;
}

.light-section .timeline-badge, .light-section-alt .timeline-badge {
  background: #ffffff;
  border: 1px solid rgba(0, 24, 51, 0.08);
  color: #0f172a;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
}

.timeline-card {
  flex-grow: 1;
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: 14px;
  padding: 1.5rem;
  transition: var(--transition-smooth);
}

.light-section .timeline-card, .light-section-alt .timeline-card {
  background: #ffffff;
  border: 1px solid rgba(0, 24, 51, 0.06);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.02);
}

.timeline-card:hover {
  transform: translateX(5px);
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.08);
}

.timeline-topic {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0;
  color: #ffffff;
}

.light-section .timeline-topic, .light-section-alt .timeline-topic {
  color: #0f172a;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.timeline-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  background: rgba(56, 189, 248, 0.08);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.15);
}

.light-section .timeline-tag, .light-section-alt .timeline-tag {
  background: rgba(56, 189, 248, 0.06);
  color: #0369a1;
  border-color: rgba(56, 189, 248, 0.2);
}

.schedule-tba-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 4rem 2rem;
  max-width: 500px;
  margin: 0 auto;
}

/* --- VENUE SECTION --- */
.venue-card-wrapper {
  margin-top: 3rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.venue-card {
  background: var(--bg-card);
  border: var(--border-glass);
  border-radius: 20px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  min-height: 380px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
  transition: var(--transition-smooth);
}

.venue-card:hover {
  border-color: rgba(56, 189, 248, 0.2);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45), 0 0 30px rgba(56, 189, 248, 0.05);
}

.venue-map-placeholder {
  background: linear-gradient(135deg, rgba(0, 15, 33, 0.95), rgba(0, 24, 51, 0.95));
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-right: var(--border-glass);
}

/* Dynamic grid effect on map */
.venue-map-grid {
  position: absolute;
  width: 200%;
  height: 200%;
  background-image: 
    linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
  background-size: 30px 30px;
  transform: rotateX(60deg) rotateZ(-30deg) translateY(-20%);
  animation: background-wave 15s linear infinite;
  perspective: 500px;
  opacity: 0.8;
}

.venue-map-marker {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.venue-marker-pulse {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
  position: relative;
}

.venue-marker-pulse::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  border-radius: 50%;
  border: 2px solid var(--accent-cyan);
  animation: pulse-ring 2s infinite ease-out;
  opacity: 0.6;
}

.venue-marker-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  background: rgba(0, 15, 33, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  backdrop-filter: blur(5px);
  color: #fff;
  text-shadow: 0 0 4px rgba(56, 189, 248, 0.2);
}

.venue-details-panel {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.venue-label {
  font-family: var(--font-display);
  color: var(--accent-cyan);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

.venue-title-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, #fff, var(--color-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.venue-address {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

/* --- FOOTER --- */
footer {
  background: #000a17;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-brand span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  background: linear-gradient(90deg, #fff, var(--color-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-brand p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-socials {
  display: flex;
  gap: 1.25rem;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.02);
  border: var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  transition: var(--transition-smooth);
}

.social-icon:hover {
  background: var(--accent-purple);
  color: #fff;
  border-color: var(--accent-purple);
  box-shadow: var(--glow-purple);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

/* --- KEYFRAME ANIMATIONS --- */
@keyframes rotate-clockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes rotate-counter {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

@keyframes background-wave {
  0% { background-position: 0 0; }
  100% { background-position: 300px 300px; }
}

@keyframes pulse-ring {
  0% { transform: scale(0.5); opacity: 0.8; }
  100% { transform: scale(1.8); opacity: 0; }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- SUBTITLE CLASS --- */
.section-subtitle {
  text-align: center;
  max-width: 600px;
  margin: -0.5rem auto 2rem;
  color: var(--color-text-secondary);
}

/* --- LIGHT SECTIONS THEME (TWO-TONE LAYOUT) --- */
.light-section {
  background-color: #ffffff;
  color: #1e293b;
  position: relative;
  transition: var(--transition-smooth);
}

.light-section-alt {
  background-color: #f8fafc;
  color: #1e293b;
  position: relative;
  transition: var(--transition-smooth);
}

/* Overrides for text color in Light mode */
.light-section h2, .light-section-alt h2 {
  background: linear-gradient(135deg, #001833 40%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.light-section p, .light-section-alt p {
  color: #475569;
}

.light-section p.lead, .light-section-alt p.lead {
  color: #0f172a;
}

.light-section .section-subtitle, .light-section-alt .section-subtitle {
  color: #64748b;
}

.light-section .hierarchy-title, .light-section-alt .hierarchy-title {
  color: #475569;
}

/* Sponsors Partner Custom Badge Icon Colors */
.icon-platinum {
  color: #e2e8f0;
  filter: drop-shadow(0 0 10px rgba(255,255,255,0.4));
}
.light-section .icon-platinum, .light-section-alt .icon-platinum {
  color: #475569;
  filter: drop-shadow(0 2px 8px rgba(71,85,105,0.25));
}

.icon-gold {
  color: #cca043;
  filter: drop-shadow(0 0 10px rgba(204,160,67,0.4));
}
.light-section .icon-gold, .light-section-alt .icon-gold {
  color: #b45309; /* warm dark gold */
  filter: drop-shadow(0 2px 8px rgba(180,83,9,0.25));
}

.icon-silver {
  color: #94a3b8;
  filter: drop-shadow(0 0 10px rgba(148,163,184,0.4));
}
.light-section .icon-silver, .light-section-alt .icon-silver {
  color: #64748b;
  filter: drop-shadow(0 2px 8px rgba(100,116,139,0.25));
}

/* Empty Card Overrides in Light Mode */
.light-section .empty-card, .light-section-alt .empty-card {
  background: #ffffff;
  border: 1px solid rgba(0, 24, 51, 0.06);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.02), 0 1px 3px rgba(0, 0, 0, 0.01);
}

.light-section .empty-card::before, .light-section-alt .empty-card::before {
  border-color: rgba(0, 24, 51, 0.08);
}

.light-section .empty-card:hover, .light-section-alt .empty-card:hover {
  background: #ffffff;
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 20px 35px rgba(56, 189, 248, 0.08), 0 1px 5px rgba(0, 0, 0, 0.02);
}

.light-section .empty-card:hover::before, .light-section-alt .empty-card:hover::before {
  border-color: rgba(56, 189, 248, 0.3);
}

.light-section .empty-card-icon, .light-section-alt .empty-card-icon {
  color: #94a3b8;
}

.light-section .empty-card:hover .empty-card-icon, .light-section-alt .empty-card:hover .empty-card-icon {
  color: var(--accent-cyan);
  text-shadow: none;
}

.light-section .empty-card-title, .light-section-alt .empty-card-title {
  color: #0f172a;
}

.light-section .empty-card:hover .empty-card-title, .light-section-alt .empty-card:hover .empty-card-title {
  color: #002855;
}

.light-section .empty-card-desc, .light-section-alt .empty-card-desc {
  color: #64748b;
}

.light-section .empty-card-action, .light-section-alt .empty-card-action {
  border-color: rgba(0, 24, 51, 0.12);
  color: #002855;
}

.light-section .empty-card-action:hover, .light-section-alt .empty-card-action:hover {
  background: rgba(56, 189, 248, 0.08);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: none;
}

/* Committee Card Overrides in Light Mode */
.light-section .committee-card, .light-section-alt .committee-card {
  background: #ffffff;
  border: 1px solid rgba(0, 24, 51, 0.06);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.02);
}

.light-section .committee-card:hover, .light-section-alt .committee-card:hover {
  background: #ffffff;
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 20px 35px rgba(56, 189, 248, 0.08);
}

.light-section .member-name, .light-section-alt .member-name {
  color: #0f172a;
}

.light-section .member-role, .light-section-alt .member-role {
  color: var(--accent-cyan);
}

.light-section .member-designation, .light-section-alt .member-designation {
  color: #64748b;
}

/* Committee Tab Selector Buttons in Light Mode */
.light-section .tab-btn, .light-section-alt .tab-btn {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: #475569;
}

.light-section .tab-btn:hover, .light-section-alt .tab-btn:hover {
  background: #e2e8f0;
  color: #0f172a;
}

.light-section .tab-btn.active, .light-section-alt .tab-btn.active {
  background: rgba(204, 160, 67, 0.1);
  border-color: var(--accent-purple);
  color: var(--accent-purple);
  box-shadow: 0 0 15px rgba(204, 160, 67, 0.15);
}

/* Venue Card Overrides in Light Mode */
.light-section .venue-card, .light-section-alt .venue-card {
  background: #ffffff;
  border: 1px solid rgba(0, 24, 51, 0.06);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.05);
}

.light-section .venue-card:hover, .light-section-alt .venue-card:hover {
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 25px 50px rgba(56, 189, 248, 0.08);
}

.light-section .venue-details-panel, .light-section-alt .venue-details-panel {
  background: #ffffff;
}

.light-section .venue-title-text, .light-section-alt .venue-title-text {
  color: #001833 !important;
  background: none !important;
  -webkit-text-fill-color: unset !important;
  -webkit-background-clip: unset !important;
}

.light-section .venue-address, .light-section-alt .venue-address {
  color: #475569;
}

.light-section .venue-details-panel p, .light-section-alt .venue-details-panel p {
  color: #64748b;
}

.light-section .venue-label, .light-section-alt .venue-label {
  border-color: rgba(56, 189, 248, 0.25);
  background: rgba(56, 189, 248, 0.08);
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 992px) {
  h2 { font-size: 1.9rem; }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  .hero-visual {
    margin-top: 0;
  }
  .hero-content {
    align-items: center;
  }
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-details {
    justify-content: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .countdown-box {
    margin-left: auto;
    margin-right: auto;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .venue-card {
    grid-template-columns: 1fr;
  }
  .venue-map-placeholder {
    height: 250px;
    border-right: none;
    border-bottom: var(--border-glass);
  }
  .venue-details-panel {
    padding: 2.5rem;
  }
}

@media (max-width: 768px) {
  section {
    opacity: 1 !important;
    transform: none !important;
    padding: 4rem 0;
    scroll-margin-top: 115px;
  }
  header {
    height: auto;
    padding: 0.65rem 0;
  }
  .nav-container {
    height: auto;
    flex-direction: column;
    gap: 0.6rem;
    padding: 0.6rem 1.25rem;
    max-width: 100%;
    overflow: hidden;
  }
  .nav-brand span {
    font-size: 1.2rem;
  }
  .nav-links {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    width: 100%;
    gap: 1.1rem;
    padding: 0.4rem 0.5rem 0.5rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .nav-links::-webkit-scrollbar {
    display: none;
  }
  .nav-links a {
    font-size: 0.88rem;
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
    padding: 0.3rem 0.5rem;
  }
  .hero-section {
    padding-top: 165px;
  }
  .hero-partner-logos {
    gap: 1.75rem;
    margin-bottom: 3rem;
  }
  .hero-partner-logo.logo-img {
    height: 55px;
  }
  .hero-partner-logo.logo-yp {
    height: 45px;
  }
  .hero-title {
    font-size: 2.6rem;
  }
  .hero-details {
    flex-direction: column;
    gap: 1rem;
    align-items: center;
  }
  .about-features {
    grid-template-columns: 1fr;
  }
  .footer-content {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  .footer-links {
    justify-content: center;
  }
  .committee-grid {
    gap: 1.5rem;
    width: 100%;
  }
  .committee-card {
    width: 100%;
    max-width: 340px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .countdown-box {
    padding: 1rem 1.25rem;
    gap: 0.75rem;
  }
  .countdown-val {
    font-size: 1.6rem !important;
  }
  .countdown-item {
    min-width: 48px;
  }
  .countdown-lbl {
    font-size: 0.65rem !important;
  }
  .countdown-divider {
    font-size: 1.6rem !important;
  }
  .tab-buttons {
    flex-direction: column;
    gap: 0.75rem;
  }
  .tab-btn {
    width: 100%;
  }
  .committee-card {
    width: 100%;
    max-width: 100%;
    padding: 1.75rem 1.25rem;
  }
}