/* ============================================
   H.D.R. SUMMIT 2026 — Main Stylesheet
   ============================================ */

/* --- CSS Variables --- */
:root {
  --primary-purple: #57206f;
  --secondary-purple: #762b78;
  --primary-blue: #315b91;
  --dark-blue: #17395f;
  --accent-orange: #f4a23a;
  --accent-gold: #d4a843;
  --light-bg: #f6f8fb;
  --white: #ffffff;
  --dark: #18202b;
  --muted: #667085;
  --border: #e2e8f0;
  --success: #10b981;
  --danger: #ef4444;
  --gradient-hero: linear-gradient(135deg, rgba(87,32,111,0.92) 0%, rgba(23,57,95,0.92) 100%);
  --gradient-purple: linear-gradient(135deg, #57206f, #762b78);
  --gradient-blue: linear-gradient(135deg, #315b91, #17395f);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #f6f8fb 100%);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 12px 40px rgba(0,0,0,0.15);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s ease;
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Inter', sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-secondary);
  font-size: 16px;
  line-height: 1.7;
  color: var(--dark);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--primary-purple); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-orange); }

ul { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.25;
  color: var(--dark);
}

/* --- Container --- */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-narrow { max-width: 900px; margin: 0 auto; padding: 0 20px; }

/* --- Section Spacing --- */
.section { padding: 80px 0; }
.section-sm { padding: 50px 0; }
.section-lg { padding: 100px 0; }

/* --- Section Headers --- */
.section-header { text-align: center; margin-bottom: 50px; }
.section-badge {
  display: inline-block;
  background: var(--gradient-purple);
  color: var(--white);
  font-family: var(--font-primary);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}
.section-subtitle {
  font-size: 17px;
  color: var(--muted);
  max-width: 650px;
  margin: 0 auto;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-orange);
  color: var(--dark);
  border-color: var(--accent-orange);
}
.btn-primary:hover {
  background: #e0912e;
  border-color: #e0912e;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244,162,58,0.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary-purple);
  border-color: var(--white);
}

.btn-white {
  background: var(--white);
  color: var(--primary-purple);
  border-color: var(--white);
}
.btn-white:hover {
  background: var(--accent-orange);
  color: var(--white);
  border-color: var(--accent-orange);
}

.btn-purple {
  background: var(--primary-purple);
  color: var(--white);
  border-color: var(--primary-purple);
}
.btn-purple:hover {
  background: var(--secondary-purple);
  border-color: var(--secondary-purple);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(87,32,111,0.3);
}

.btn-sm { padding: 10px 22px; font-size: 12px; }
.btn-lg { padding: 16px 40px; font-size: 15px; }

/* --- Announcement Bar --- */
.announcement-bar {
  background: var(--gradient-purple);
  color: var(--white);
  padding: 8px 0;
  font-size: 13px;
  font-weight: 500;
  position: relative;
  z-index: 1001;
}
.announcement-bar .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.announcement-bar a {
  color: var(--accent-orange);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.announcement-bar a:hover { color: var(--white); }
.announcement-close {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: rgba(255,255,255,0.7);
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
}
.announcement-close:hover { color: var(--white); }
.announcement-bar.hidden { display: none; }

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.header.scrolled {
  box-shadow: var(--shadow-md);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  transition: var(--transition);
}
.header.scrolled .container { height: 60px; }

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.header-logo img {
  height: 44px;
  width: auto;
  transition: var(--transition);
}
.header.scrolled .header-logo img { height: 36px; }
.header-logo-text {
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-purple);
  line-height: 1.2;
}
.header-logo-text span {
  display: block;
  font-size: 10px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* Desktop Nav */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-desktop a {
  font-family: var(--font-primary);
  font-size: 13px;
  font-weight: 500;
  color: var(--dark);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--primary-purple);
  background: rgba(87,32,111,0.06);
}
.header-cta { margin-left: 8px; }

/* Mobile Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1002;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--dark);
  margin: 5px 0;
  transition: var(--transition);
  border-radius: 2px;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Nav */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 1001;
  padding: 80px 24px 40px;
  overflow-y: auto;
  flex-direction: column;
  gap: 0;
}
.nav-mobile.active { display: flex; }
.nav-mobile a {
  display: block;
  font-family: var(--font-primary);
  font-size: 18px;
  font-weight: 500;
  color: var(--dark);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.nav-mobile a:hover { color: var(--primary-purple); }
.nav-mobile .btn { margin-top: 20px; text-align: center; }

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark-blue);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(87,32,111,0.4) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(49,91,145,0.4) 0%, transparent 60%),
    linear-gradient(180deg, #1a1a2e 0%, #17395f 50%, #0f2d4a 100%);
  z-index: 0;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 85%, rgba(244,162,58,0.08) 0%, transparent 50%),
    radial-gradient(circle at 85% 15%, rgba(87,32,111,0.15) 0%, transparent 50%);
}
/* Medical visual elements */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 5 L30 55 M5 30 L55 30' stroke='%23ffffff' stroke-width='0.5' fill='none'/%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 40px 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(244,162,58,0.15);
  border: 1px solid rgba(244,162,58,0.3);
  color: var(--accent-orange);
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 18px;
  border-radius: 30px;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease both;
}
.hero-badge i { font-size: 14px; }
.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.05;
  margin-bottom: 10px;
  animation: fadeInUp 0.8s 0.15s ease both;
}
.hero-title .accent { color: var(--accent-orange); }
.hero-subtitle {
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 300;
  color: rgba(255,255,255,0.7);
  margin-bottom: 8px;
  letter-spacing: 3px;
  animation: fadeInUp 0.8s 0.25s ease both;
}
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.55);
  max-width: 620px;
  margin-bottom: 28px;
  line-height: 1.7;
  animation: fadeInUp 0.8s 0.35s ease both;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
  animation: fadeInUp 0.8s 0.45s ease both;
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  font-weight: 500;
}
.hero-meta-item i {
  color: var(--accent-orange);
  font-size: 18px;
  width: 20px;
  text-align: center;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  animation: fadeInUp 0.8s 0.55s ease both;
}

/* Floating medical icons */
.hero-float {
  position: absolute;
  z-index: 1;
  opacity: 0.06;
  font-size: 120px;
  color: var(--white);
}
.hero-float-1 { top: 10%; right: 8%; animation: floatSlow 6s ease-in-out infinite; }
.hero-float-2 { bottom: 15%; right: 15%; animation: floatSlow 8s 1s ease-in-out infinite; }
.hero-float-3 { top: 60%; right: 3%; animation: floatSlow 7s 2s ease-in-out infinite; }

/* --- Countdown --- */
.countdown-section {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 30px 0;
}
.countdown-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.countdown-label {
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.countdown-timer {
  display: flex;
  gap: 12px;
}
.countdown-item {
  text-align: center;
  min-width: 72px;
}
.countdown-item .number {
  display: block;
  font-family: var(--font-primary);
  font-size: 36px;
  font-weight: 800;
  color: var(--primary-purple);
  line-height: 1;
  background: rgba(87,32,111,0.06);
  border-radius: var(--radius-sm);
  padding: 10px 8px;
  min-width: 64px;
}
.countdown-item .label {
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 6px;
}
.countdown-separator {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-purple);
  padding-top: 4px;
}
.countdown-live {
  text-align: center;
  padding: 10px;
}
.countdown-live span {
  display: inline-block;
  background: var(--success);
  color: var(--white);
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 24px;
  border-radius: 30px;
  animation: pulse 2s ease-in-out infinite;
}

/* --- Stats Section --- */
.stats-section {
  background: var(--light-bg);
  padding: 60px 0;
  border-bottom: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  text-align: center;
  padding: 28px 16px;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.stat-number {
  font-family: var(--font-primary);
  font-size: 36px;
  font-weight: 800;
  color: var(--primary-purple);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.about-content h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  margin-bottom: 20px;
}
.about-content p {
  color: #475467;
  margin-bottom: 16px;
  font-size: 16px;
}
.about-video {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--dark);
}
.about-video .video-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}
.about-video .video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.about-video .about-image-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  color: var(--white);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 13px;
  font-weight: 600;
  z-index: 2;
}

/* --- Why Attend Cards --- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.card {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(87,32,111,0.15);
}
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.card-icon.purple { background: rgba(87,32,111,0.08); color: var(--primary-purple); }
.card-icon.blue { background: rgba(49,91,145,0.08); color: var(--primary-blue); }
.card-icon.orange { background: rgba(244,162,58,0.1); color: var(--accent-orange); }
.card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

/* --- Scientific Highlights --- */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.highlight-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: var(--transition);
}
.highlight-card:hover {
  border-color: var(--primary-purple);
  box-shadow: var(--shadow-md);
}
.highlight-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-purple);
  color: var(--white);
  font-family: var(--font-primary);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.highlight-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--dark);
  line-height: 1.5;
}

/* --- Debate & Panel Cards --- */
.debate-card, .panel-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.debate-card::before, .panel-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}
.debate-card::before { background: var(--gradient-purple); }
.panel-card::before { background: var(--gradient-blue); }

.debate-card:hover, .panel-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.debate-icon, .panel-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto 20px;
}
.debate-icon { background: rgba(87,32,111,0.08); color: var(--primary-purple); }
.panel-icon { background: rgba(49,91,145,0.08); color: var(--primary-blue); }
.debate-card h3, .panel-card h3 {
  font-size: 22px;
  margin-bottom: 8px;
}
.debate-card p, .panel-card p {
  color: var(--muted);
  font-size: 15px;
}

.two-col-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* --- Workshop Cards --- */
.workshop-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.workshop-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.workshop-image {
  aspect-ratio: 16/9;
  background: var(--gradient-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.2);
  font-size: 48px;
  position: relative;
}
.workshop-number {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--accent-orange);
  color: var(--dark);
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
}
.workshop-body { padding: 24px; }
.workshop-body h3 { font-size: 18px; margin-bottom: 8px; }
.workshop-body p { color: var(--muted); font-size: 14px; margin-bottom: 16px; }

/* --- Academic & Quiz Sections --- */
.academic-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: var(--transition);
}
.academic-card:hover {
  box-shadow: var(--shadow-md);
}
.academic-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}
.academic-icon.purple { background: rgba(87,32,111,0.08); color: var(--primary-purple); }
.academic-icon.blue { background: rgba(49,91,145,0.08); color: var(--primary-blue); }
.academic-icon.orange { background: rgba(244,162,58,0.1); color: var(--accent-orange); }
.academic-card h3 { font-size: 17px; margin-bottom: 4px; }
.academic-card p { color: var(--muted); font-size: 14px; }

/* --- KMC Banner --- */
.kmc-banner {
  background: var(--gradient-purple);
  padding: 40px 0;
  text-align: center;
  color: var(--white);
}
.kmc-banner h3 {
  color: var(--white);
  font-size: 24px;
  margin-bottom: 8px;
}
.kmc-banner p {
  color: rgba(255,255,255,0.75);
  font-size: 15px;
}

/* --- Faculty Section --- */
.faculty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.faculty-card {
  text-align: center;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px 20px;
  transition: var(--transition);
}
.faculty-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.faculty-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--light-bg);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: var(--muted);
  border: 3px solid var(--border);
}
.faculty-card h4 { font-size: 16px; margin-bottom: 4px; }
.faculty-card .designation { font-size: 13px; color: var(--primary-purple); font-weight: 500; }
.faculty-card .institution { font-size: 12px; color: var(--muted); }

/* --- Committee Cards --- */
.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.committee-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}
.committee-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(87,32,111,0.15);
}
.committee-avatar {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gradient-purple);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-family: var(--font-primary);
  font-size: 20px;
  font-weight: 700;
}
.committee-info h4 { font-size: 15px; margin-bottom: 2px; }
.committee-info .role {
  font-size: 12px;
  color: var(--primary-purple);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* --- Venue Section --- */
.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.venue-map {
  aspect-ratio: 16/10;
  background: var(--light-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 14px;
  overflow: hidden;
}
.venue-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}
.venue-details h3 { font-size: 24px; margin-bottom: 12px; }
.venue-details p { color: #475467; margin-bottom: 8px; }
.venue-details .address {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 16px;
  padding: 16px;
  background: var(--light-bg);
  border-radius: var(--radius-sm);
}
.venue-details .address i { color: var(--primary-purple); margin-top: 3px; }

/* --- Bengaluru Section --- */
.bengaluru-section {
  position: relative;
  padding: 80px 0;
  background: var(--dark-blue);
  color: var(--white);
  text-align: center;
  overflow: hidden;
}
.bengaluru-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(87,32,111,0.3) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(49,91,145,0.3) 0%, transparent 60%);
}
.bengaluru-section .container { position: relative; z-index: 1; }
.bengaluru-section h2 {
  color: var(--white);
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 16px;
}
.bengaluru-section p {
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 30px;
  font-size: 17px;
}

/* --- Registration CTA --- */
.cta-section {
  background: var(--gradient-purple);
  padding: 80px 0;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(244,162,58,0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.05) 0%, transparent 50%);
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 {
  color: var(--white);
  font-size: clamp(28px, 4vw, 42px);
  margin-bottom: 16px;
}
.cta-section p {
  color: rgba(255,255,255,0.75);
  max-width: 550px;
  margin: 0 auto 30px;
  font-size: 17px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- FAQ Section --- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active { border-color: var(--primary-purple); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: var(--white);
  border: none;
  cursor: pointer;
  font-family: var(--font-primary);
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover { background: var(--light-bg); }
.faq-question i {
  font-size: 14px;
  color: var(--muted);
  transition: var(--transition);
}
.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary-purple); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-answer-inner {
  padding: 0 24px 18px;
  color: #475467;
  font-size: 15px;
  line-height: 1.7;
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-family: var(--font-primary);
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-secondary);
  font-size: 14px;
  color: var(--dark);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary-purple);
  box-shadow: 0 0 0 3px rgba(87,32,111,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-success {
  display: none;
  background: rgba(16,185,129,0.08);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  text-align: center;
}
.form-success.show { display: block; }

.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  background: var(--light-bg);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}
.contact-info-card i {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-purple);
  font-size: 16px;
}
.contact-info-card h4 { font-size: 14px; margin-bottom: 2px; }
.contact-info-card p { font-size: 13px; color: var(--muted); }

/* --- Sponsor Logos --- */
.sponsor-tiers {
  display: flex;
  flex-direction: column;
  gap: 40px;
  align-items: center;
}
.sponsor-tier-label {
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.sponsor-logos {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  align-items: center;
}
.sponsor-logo-placeholder {
  width: 140px;
  height: 70px;
  background: var(--light-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 12px;
}

/* --- Footer --- */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand h3 {
  color: var(--white);
  font-size: 20px;
  margin-bottom: 4px;
}
.footer-brand .subtitle {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
}
.footer-col h4 {
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  padding: 4px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--accent-orange); padding-left: 4px; }
.footer-col p { font-size: 14px; line-height: 1.7; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* --- Page Header (for inner pages) --- */
.page-header {
  background: var(--gradient-hero);
  padding: 100px 0 60px;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(244,162,58,0.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.03) 0%, transparent 50%);
}
.page-header .container { position: relative; z-index: 1; }
.page-header h1 {
  color: var(--white);
  font-size: clamp(32px, 5vw, 48px);
  margin-bottom: 12px;
}
.page-header p {
  color: rgba(255,255,255,0.7);
  font-size: 17px;
  max-width: 600px;
  margin: 0 auto;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}
.breadcrumb a { color: rgba(255,255,255,0.6); }
.breadcrumb a:hover { color: var(--accent-orange); }

/* --- Programme Schedule --- */
.schedule-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
}
.schedule-tab {
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 30px;
  border: 2px solid var(--border);
  background: var(--white);
  color: var(--muted);
  cursor: pointer;
  transition: var(--transition);
}
.schedule-tab.active, .schedule-tab:hover {
  background: var(--primary-purple);
  border-color: var(--primary-purple);
  color: var(--white);
}
.schedule-day { display: none; }
.schedule-day.active { display: block; }

.schedule-placeholder {
  text-align: center;
  padding: 60px 20px;
  background: var(--light-bg);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border);
}
.schedule-placeholder i { font-size: 48px; color: var(--muted); margin-bottom: 16px; display: block; }
.schedule-placeholder h3 { font-size: 20px; margin-bottom: 8px; }
.schedule-placeholder p { color: var(--muted); }

.schedule-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 20px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.schedule-item:hover { background: var(--light-bg); }
.schedule-time {
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-purple);
}
.schedule-info h4 { font-size: 16px; margin-bottom: 4px; }
.schedule-info .speaker { font-size: 13px; color: var(--primary-blue); font-weight: 500; }
.schedule-info .meta { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* --- Abstract Page --- */
.abstract-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.abstract-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.abstract-card i { font-size: 32px; color: var(--primary-purple); margin-bottom: 14px; }
.abstract-card h3 { font-size: 18px; margin-bottom: 8px; }
.abstract-card p { color: var(--muted); font-size: 14px; }

/* --- Registration Page --- */
.reg-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.reg-tier {
  text-align: center;
  padding: 36px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.reg-tier:hover { box-shadow: var(--shadow-lg); }
.reg-tier.featured {
  border-color: var(--primary-purple);
  box-shadow: 0 0 0 2px rgba(87,32,111,0.1);
}
.reg-tier h3 { font-size: 20px; margin-bottom: 8px; }
.reg-tier .price {
  font-family: var(--font-primary);
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-purple);
  margin-bottom: 4px;
}
.reg-tier .price-note { font-size: 13px; color: var(--muted); margin-bottom: 20px; }
.reg-tier ul {
  text-align: left;
  margin-bottom: 24px;
}
.reg-tier ul li {
  padding: 6px 0;
  font-size: 14px;
  color: #475467;
  display: flex;
  align-items: center;
  gap: 8px;
}
.reg-tier ul li i { color: var(--success); font-size: 12px; }

/* --- Sponsorship Tiers --- */
.sponsorship-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.sponsorship-card {
  padding: 32px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
  position: relative;
}
.sponsorship-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.sponsorship-card .tier-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.tier-platinum .tier-badge { background: rgba(87,32,111,0.1); color: var(--primary-purple); }
.tier-gold .tier-badge { background: rgba(212,168,67,0.15); color: #b8922e; }
.tier-silver .tier-badge { background: rgba(102,112,133,0.1); color: var(--muted); }
.tier-bronze .tier-badge { background: rgba(244,162,58,0.1); color: var(--accent-orange); }
.sponsorship-card h3 { font-size: 20px; margin-bottom: 16px; }
.sponsorship-card ul { text-align: left; margin-bottom: 24px; }
.sponsorship-card ul li {
  padding: 6px 0;
  font-size: 14px;
  color: #475467;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sponsorship-card ul li i { color: var(--success); font-size: 12px; }

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-purple);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-md);
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--secondary-purple); transform: translateY(-2px); }

/* --- Mobile Sticky CTA --- */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 10px 16px;
  z-index: 998;
  box-shadow: 0 -4px 12px rgba(0,0,0,0.08);
}
.mobile-sticky-cta .container {
  display: flex;
  gap: 10px;
}
.mobile-sticky-cta .btn { flex: 1; font-size: 11px; padding: 10px 12px; }

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes floatSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* --- Responsive: Tablet (769px–1024px) --- */
@media (max-width: 1024px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: block; }
  .header-cta.desktop-only { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 30px; }
  .venue-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .abstract-grid { grid-template-columns: 1fr; }
}

/* --- Responsive: Mobile Large (max-width 768px) --- */
@media (max-width: 768px) {
  :root {
    --safe-bottom: env(safe-area-inset-bottom, 0px);
  }

  .section { padding: 50px 0; }
  .section-sm { padding: 36px 0; }
  .section-lg { padding: 60px 0; }
  .container { padding: 0 16px; }

  /* Header mobile */
  .header .container { height: 60px; }
  .header.scrolled .container { height: 56px; }
  .header-logo img { height: 38px; }
  .header.scrolled .header-logo img { height: 32px; }
  .header-logo-text { font-size: 14px; }
  .header-logo-text span { font-size: 9px; }

  /* Nav toggle touch target */
  .nav-toggle { padding: 12px; min-width: 48px; min-height: 48px; display: flex; align-items: center; justify-content: center; }
  .nav-mobile { padding: 70px 20px 40px; padding-bottom: calc(40px + var(--safe-bottom)); }
  .nav-mobile a { font-size: 17px; padding: 16px 0; min-height: 48px; display: flex; align-items: center; }

  /* Hero mobile */
  .hero { min-height: 80vh; min-height: 80dvh; }
  .hero-content { padding: 24px 0; }
  .hero-title { font-size: clamp(30px, 8vw, 48px); }
  .hero-float { display: none; }
  .hero-desc { font-size: 15px; }
  .hero-meta-item { font-size: 14px; }

  /* Buttons — 44px touch targets */
  .btn { min-height: 44px; padding: 12px 24px; font-size: 13px; }
  .btn-sm { padding: 10px 18px; font-size: 12px; min-height: 40px; }
  .btn-lg { padding: 14px 28px; font-size: 14px; }

  /* Countdown */
  .countdown-section { padding: 20px 0; }
  .countdown-wrapper { gap: 12px; flex-direction: column; align-items: center; }
  .countdown-label { font-size: 12px; }
  .countdown-timer { gap: 8px; }
  .countdown-item .number { font-size: 24px; min-width: 52px; padding: 8px 6px; }
  .countdown-item .label { font-size: 9px; }
  .countdown-separator { font-size: 20px; padding-top: 2px; }

  /* Stats */
  .stats-section { padding: 40px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 20px 12px; }
  .stat-number { font-size: 26px; }
  .stat-label { font-size: 12px; }

  /* Cards */
  .cards-grid { grid-template-columns: 1fr; }
  .card { padding: 24px 20px; }

  /* Highlights */
  .highlights-grid { grid-template-columns: 1fr; }
  .highlight-card { padding: 18px; }

  /* Debate & Panel */
  .debate-card, .panel-card { padding: 28px 20px; }
  .debate-card h3, .panel-card h3 { font-size: 19px; }

  /* Workshop */
  .workshop-body { padding: 18px; }

  /* Committee */
  .committee-grid { grid-template-columns: 1fr; }

  /* Faculty */
  .faculty-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .faculty-card { padding: 20px 14px; }
  .faculty-avatar { width: 80px; height: 80px; font-size: 30px; }

  /* Venue */
  .venue-grid { gap: 24px; }
  .venue-map { aspect-ratio: 16/9; }

  /* Bengaluru */
  .bengaluru-section { padding: 50px 0; }

  /* CTA */
  .cta-section { padding: 50px 0; }

  /* Footer */
  .footer { padding: 40px 0 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; margin-bottom: 28px; }
  .footer-bottom { padding: 16px 0; font-size: 12px; }

  /* Page header */
  .page-header { padding: 80px 0 40px; }
  .page-header h1 { font-size: clamp(26px, 6vw, 40px); }
  .page-header p { font-size: 15px; }

  /* Schedule */
  .schedule-tabs { gap: 6px; flex-wrap: wrap; }
  .schedule-tab { font-size: 13px; padding: 10px 20px; }
  .schedule-item { grid-template-columns: 1fr; gap: 8px; padding: 16px; }

  /* Abstract */
  .abstract-grid { grid-template-columns: 1fr; }
  .abstract-card { padding: 24px 20px; }

  /* Registration */
  .reg-tiers { grid-template-columns: 1fr; }
  .reg-tier { padding: 28px 20px; }

  /* Sponsorship */
  .sponsorship-grid { grid-template-columns: 1fr; }
  .sponsorship-card { padding: 24px 18px; }

  /* Sponsor logos */
  .sponsor-logos { gap: 16px; }
  .sponsor-logo-placeholder { width: 100px; height: 50px; font-size: 10px; }

  /* Forms */
  .form-group input, .form-group select, .form-group textarea { font-size: 16px; padding: 14px 16px; }

  /* FAQ */
  .faq-question { padding: 16px 18px; font-size: 14px; min-height: 48px; }
  .faq-answer-inner { padding: 0 18px 16px; font-size: 14px; }

  /* Contact info */
  .contact-info-card { padding: 16px; }

  /* Floating elements */
  .mobile-sticky-cta { display: block; padding: 10px 16px; padding-bottom: calc(10px + var(--safe-bottom)); }
  .mobile-sticky-cta .btn { flex: 1; font-size: 12px; padding: 12px 14px; min-height: 44px; }
  .back-to-top { bottom: 76px; right: 14px; width: 42px; height: 42px; }
  .whatsapp-float { bottom: 76px; left: 14px; width: 50px; height: 50px; font-size: 24px; }
  .whatsapp-float .wa-tooltip { display: none; }
  .floating-register { display: none; }

  /* Announcement bar */
  .announcement-bar { font-size: 11px; padding: 8px 40px 8px 12px; text-align: center; }
  .announcement-bar .container { gap: 8px; }
  .announcement-close { right: 10px; min-width: 44px; min-height: 44px; display: flex; align-items: center; justify-content: center; }
}

/* --- Responsive: Mobile Medium (max-width 480px) --- */
@media (max-width: 480px) {
  .container { padding: 0 14px; }

  /* Hero */
  .hero { min-height: 85vh; min-height: 85dvh; }
  .hero-badge { font-size: 10px; padding: 6px 14px; gap: 6px; }
  .hero-title { font-size: clamp(26px, 9vw, 40px); line-height: 1.1; }
  .hero-subtitle { font-size: 14px; letter-spacing: 2px; }
  .hero-desc { font-size: 14px; margin-bottom: 20px; }
  .hero-meta { flex-direction: column; gap: 8px; }
  .hero-meta-item { font-size: 13px; }
  .hero-actions { flex-direction: column; gap: 10px; }
  .hero-actions .btn { width: 100%; }

  /* Section */
  .section { padding: 40px 0; }
  .section-header { margin-bottom: 32px; }
  .section-title { font-size: clamp(22px, 5vw, 30px); }
  .section-subtitle { font-size: 15px; }

  /* Countdown */
  .countdown-item .number { font-size: 20px; min-width: 46px; padding: 6px 4px; }
  .countdown-separator { font-size: 18px; }
  .countdown-timer { gap: 6px; }

  /* Stats */
  .stat-number { font-size: 22px; }
  .stat-label { font-size: 11px; }

  /* Cards */
  .card { padding: 20px 16px; }
  .card-icon { width: 44px; height: 44px; font-size: 20px; margin-bottom: 14px; }

  /* Faculty */
  .faculty-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .faculty-card { padding: 16px 10px; }
  .faculty-avatar { width: 68px; height: 68px; font-size: 26px; margin-bottom: 10px; }
  .faculty-card h4 { font-size: 13px; }
  .faculty-card .designation { font-size: 11px; }

  /* Committee */
  .committee-card { padding: 14px; gap: 12px; }
  .committee-avatar { width: 52px; height: 52px; font-size: 17px; }
  .committee-info h4 { font-size: 14px; }

  /* Registration */
  .reg-tier .price { font-size: 28px; }

  /* Sponsorship */
  .sponsorship-card h3 { font-size: 18px; }

  /* Debate/Panel */
  .debate-card, .panel-card { padding: 24px 16px; }
  .debate-icon, .panel-icon { width: 52px; height: 52px; font-size: 22px; margin-bottom: 14px; }

  /* Workshop */
  .workshop-image { font-size: 36px; }

  /* Academic */
  .academic-card { padding: 20px 16px; gap: 14px; flex-direction: column; text-align: center; }
  .academic-icon { margin-bottom: 0; }

  /* KMC */
  .kmc-banner { padding: 30px 0; }
  .kmc-banner h3 { font-size: 20px; }

  /* Page header */
  .page-header { padding: 70px 0 32px; }

  /* Schedule tabs */
  .schedule-tab { font-size: 12px; padding: 8px 16px; }

  /* CTA buttons */
  .cta-actions { flex-direction: column; gap: 10px; }
  .cta-actions .btn { width: 100%; }

  /* Floating buttons */
  .mobile-sticky-cta .container { gap: 8px; }
  .mobile-sticky-cta .btn { font-size: 11px; padding: 10px 10px; }
  .whatsapp-float { width: 48px; height: 48px; font-size: 22px; bottom: 72px; left: 12px; }
  .back-to-top { bottom: 72px; right: 12px; width: 38px; height: 38px; font-size: 16px; }

  /* Sponsor logos */
  .sponsor-logo-placeholder { width: 80px; height: 42px; }
}

/* --- Responsive: Mobile Small (max-width 375px) --- */
@media (max-width: 375px) {
  .container { padding: 0 12px; }

  .header .container { height: 56px; }
  .header-logo img { height: 34px; }
  .header-logo-text { font-size: 13px; }
  .header-logo-text span { font-size: 8px; }

  .hero { min-height: 90vh; min-height: 90dvh; }
  .hero-title { font-size: clamp(24px, 10vw, 36px); }
  .hero-subtitle { font-size: 13px; letter-spacing: 1.5px; }
  .hero-desc { font-size: 13px; }
  .hero-meta-item { font-size: 12px; gap: 8px; }
  .hero-meta-item i { font-size: 14px; }

  .btn { font-size: 12px; padding: 11px 20px; min-height: 44px; }

  .countdown-item .number { font-size: 18px; min-width: 42px; padding: 6px 4px; }
  .countdown-separator { font-size: 16px; }

  .stat-number { font-size: 20px; }
  .stat-card { padding: 16px 10px; }

  .nav-mobile a { font-size: 16px; padding: 14px 0; }

  .faculty-avatar { width: 60px; height: 60px; font-size: 22px; }
  .committee-avatar { width: 48px; height: 48px; font-size: 15px; }
}

/* --- Responsive: Mobile Tiny (max-width 320px) --- */
@media (max-width: 320px) {
  .container { padding: 0 10px; }
  .hero-title { font-size: 22px; }
  .hero-subtitle { font-size: 12px; }
  .hero-badge { font-size: 9px; padding: 5px 12px; }
  .countdown-item .number { font-size: 16px; min-width: 38px; }
  .countdown-item .label { font-size: 8px; }
  .stat-number { font-size: 18px; }
  .faculty-grid { gap: 8px; }
  .faculty-card { padding: 12px 8px; }
  .faculty-avatar { width: 54px; height: 54px; font-size: 20px; }
  .faculty-card h4 { font-size: 12px; }
  .nav-mobile a { font-size: 15px; padding: 12px 0; }
}

/* --- Floating WhatsApp --- */
.whatsapp-float {
  position: fixed;
  bottom: 90px;
  left: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  z-index: 999;
  transition: var(--transition);
  text-decoration: none;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37,211,102,0.5);
  color: var(--white);
}
.whatsapp-float .wa-tooltip {
  position: absolute;
  left: 66px;
  background: var(--dark);
  color: var(--white);
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.whatsapp-float:hover .wa-tooltip {
  opacity: 1;
  visibility: visible;
}
.floating-register {
  position: fixed;
  bottom: 90px;
  right: 20px;
  z-index: 999;
}
.floating-register .btn {
  box-shadow: 0 4px 16px rgba(87,32,111,0.3);
  border-radius: 30px;
  padding: 12px 24px;
  font-size: 12px;
}

/* --- Print --- */
@media print {
  .header, .announcement-bar, .mobile-sticky-cta, .back-to-top, .footer { display: none; }
  .hero { min-height: auto; padding: 30px 0; }
  body { font-size: 12pt; }
}