/* ==========================================================================
   iRiseCon 2026 - International Conference Design System
   Modern, Premium, Responsive & Accessible Academic Conference Styling
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- Root Color Tokens & Theme Variables --- */
:root {
  /* Brand Palette */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-glow: rgba(79, 70, 229, 0.25);
  --secondary: #06b6d4;
  --secondary-hover: #0891b2;
  --accent: #10b981;
  --accent-gold: #f59e0b;
  --danger: #ef4444;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #06b6d4 100%);
  --grad-secondary: linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
  --grad-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --grad-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);

  /* Neutral Dark (Default Mode) */
  --bg-main: #0a0d14;
  --bg-surface: #111726;
  --bg-surface-elevated: #1a2236;
  --bg-glass: rgba(17, 23, 38, 0.75);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.4);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-invert: #0f172a;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 35px rgba(79, 70, 229, 0.22);

  /* Typography */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing & Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --container-max: 1240px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Light Mode Variations --- */
[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.82);
  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-focus: rgba(79, 70, 229, 0.4);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-invert: #ffffff;

  --grad-card: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 25px 50px -12px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 30px rgba(79, 70, 229, 0.12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* --- Ambient Glowing Elements & Background Grid --- */
.bg-ambient-grid {
  position: fixed;
  inset: 0;
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(79, 70, 229, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(6, 182, 212, 0.07) 0%, transparent 45%),
    linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  background-position: center center;
  pointer-events: none;
  z-index: -1;
  opacity: 0.6;
}

/* --- Top Announcement Bar --- */
.announcement-bar {
  background: var(--grad-primary);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  z-index: 60;
}

.announcement-bar .badge-live {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(4px);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.announcement-bar .badge-live::before {
  content: "";
  width: 6px;
  height: 6px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse-ring 1.5s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.announcement-bar a {
  text-decoration: underline;
  font-weight: 700;
  color: #ffffff;
}

/* --- Sticky Navigation Bar --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.navbar .nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 42px;
  height: 42px;
  background: var(--grad-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
  line-height: 1.1;
}

.brand-tag {
  font-size: 0.65rem;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
}

/* Nav Dropdown Menu */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: -1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  min-width: 220px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  list-style: none;
  z-index: 100;
}

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

.nav-dropdown li a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.nav-dropdown li a:hover {
  background: var(--border-subtle);
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.theme-toggle {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition);
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* --- Buttons & Action Utilities --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
  position: relative;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: #ffffff;
  box-shadow: 0 4px 18px var(--primary-glow);
}

.btn-primary:hover {
  box-shadow: 0 6px 26px rgba(79, 70, 229, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-surface);
  border-color: var(--border-focus);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(79, 70, 229, 0.08);
}

.btn-accent {
  background: var(--accent);
  color: #ffffff;
}

.btn-accent:hover {
  background: #059669;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.95rem 2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

/* --- Hero Slideshow Section --- */
.hero, .hero-slideshow {
  position: relative;
  overflow: hidden;
  padding: 3rem 0 4rem;
  min-height: 640px;
}

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

.hero-slide {
  display: none;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.hero-slide.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
  animation: slideFadeIn 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideFadeIn {
  from { opacity: 0; transform: translateY(16px) scale(0.99); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.hero-wrapper {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3.5rem;
}

/* Slideshow Navigation Arrows */
.slide-arrow {
  position: absolute;
  top: 48%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  cursor: pointer;
  z-index: 25;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.slide-arrow:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 4px 20px var(--primary-glow);
}

.slide-arrow.prev {
  left: 0.75rem;
}

.slide-arrow.next {
  right: 0.75rem;
}

/* Slideshow Bottom Bar & Indicators */
.slideshow-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  position: relative;
  z-index: 10;
}

.slideshow-controls-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.slideshow-dots {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.slide-dot {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--border-subtle);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  overflow: hidden;
  padding: 0;
}

.slide-dot:hover {
  background: var(--text-muted);
}

.slide-dot.active {
  width: 36px;
  height: 10px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--primary);
}

.slide-dot-progress {
  display: none;
  height: 100%;
  width: 0%;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
}

.slide-dot.active .slide-dot-progress {
  display: block;
}

.slideshow-counter {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.slideshow-counter strong {
  color: var(--primary);
  font-size: 1rem;
}

.slideshow-autoplay-toggle {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  transition: var(--transition);
}

.slideshow-autoplay-toggle:hover {
  border-color: var(--border-focus);
  color: var(--text-primary);
}

/* Custom Preview Cards for Slides 2, 3, 4 */
.slide-preview-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.slide-preview-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--grad-primary);
}

.mini-speaker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.mini-speaker-item {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
}

.mini-speaker-item:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.mini-speaker-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.mini-speaker-info h5 {
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.15rem;
}

.mini-speaker-info p {
  font-size: 0.72rem;
  color: var(--secondary);
  line-height: 1.2;
}

.track-pills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.track-pill-tag {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.track-pill-tag strong {
  color: var(--primary);
}


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

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(79, 70, 229, 0.12);
  border: 1px solid rgba(79, 70, 229, 0.3);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: #818cf8;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-title .gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-theme-tag {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 1rem;
  line-height: 1.4;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2.25rem;
  padding: 1rem 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.meta-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

.meta-item strong {
  color: var(--text-primary);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

/* Hero Right Card: Live Countdown & Quick Portal */
.hero-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--grad-primary);
}

.countdown-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.countdown-header h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.countdown-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.timer-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.9rem 0.5rem;
  text-align: center;
}

.timer-val {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.timer-label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.quick-portal-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.portal-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.15rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}

.portal-btn:hover {
  border-color: var(--border-focus);
  background: rgba(79, 70, 229, 0.08);
  transform: translateX(4px);
}

.portal-btn span {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

/* --- Stats Ribbon --- */
.stats-ribbon {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 2.25rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 0.25rem;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- Section Global Layout --- */
.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 0.75rem;
  background: rgba(79, 70, 229, 0.1);
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-full);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.about-text h3 {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  line-height: 1.3;
}

.about-text p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}

.highlight-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: var(--transition);
}

.highlight-box:hover {
  border-color: var(--border-focus);
  transform: translateY(-3px);
}

.highlight-box svg {
  color: var(--secondary);
  margin-bottom: 0.75rem;
}

.highlight-box h4 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.highlight-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.about-visual {
  position: relative;
}

.conference-format-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.conference-format-card h4 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.format-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.format-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.format-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.1);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.format-item h5 {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.format-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Call For Papers / Tracks Section --- */
.tracks-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.75rem;
}

.tracks-search-wrapper {
  position: relative;
  width: 100%;
  max-width: 460px;
}

.tracks-search-input {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 2.85rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.tracks-search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.tracks-search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.tracks-filter-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}

.track-filter-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.track-filter-btn:hover, .track-filter-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.tracks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.75rem;
}

.track-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.85rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.track-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.track-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--grad-primary);
  transition: width 0.3s ease;
}

.track-card:hover::after {
  width: 100%;
}

.track-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.track-number {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  background: rgba(79, 70, 229, 0.12);
  color: var(--primary);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

.track-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
}

.track-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.85rem;
}

.track-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.track-subtopics {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.track-subtopics li {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.track-subtopics li::before {
  content: "•";
  color: var(--primary);
  font-size: 1.1rem;
}

/* --- Important Dates / Timeline Section --- */
.timeline-wrapper {
  position: relative;
  max-width: 900px;
  margin-inline: auto;
  padding: 1rem 0;
}

.timeline-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: var(--border-subtle);
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  margin-bottom: 3.5rem;
  position: relative;
}

.timeline-item:nth-child(even) .timeline-content {
  grid-column: 2;
  text-align: left;
}

.timeline-item:nth-child(even) .timeline-date-badge {
  grid-column: 1;
  text-align: right;
  order: -1;
}

.timeline-item:nth-child(odd) .timeline-content {
  grid-column: 1;
  text-align: right;
}

.timeline-item:nth-child(odd) .timeline-date-badge {
  grid-column: 2;
  text-align: left;
}

.timeline-node {
  position: absolute;
  top: 1.25rem;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 4px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.2);
  z-index: 2;
}

.timeline-item.active .timeline-node {
  border-color: var(--accent);
  box-shadow: 0 0 0 6px rgba(16, 185, 129, 0.25);
  animation: pulse-node 2s infinite;
}

@keyframes pulse-node {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
  70% { box-shadow: 0 0 0 12px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.timeline-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.timeline-content:hover {
  border-color: var(--border-focus);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.timeline-content h4 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.timeline-content p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.timeline-date-badge {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.timeline-date-badge .date-range {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.timeline-date-badge .status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  margin-top: 0.45rem;
}

.status-pill.upcoming {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-gold);
}

.status-pill.open {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent);
}

.status-pill.fixed {
  background: rgba(79, 70, 229, 0.15);
  color: var(--primary);
}

/* --- Speakers Section --- */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

.speaker-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.speaker-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.speaker-img-wrapper {
  position: relative;
  height: 270px;
  background: var(--bg-surface-elevated);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.speaker-avatar-svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.speaker-card:hover .speaker-avatar-svg {
  transform: scale(1.05);
}

.speaker-role-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--grad-primary);
  color: #ffffff;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-sm);
}

.speaker-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.speaker-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.speaker-affil {
  font-size: 0.85rem;
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.speaker-topic {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.speaker-topic strong {
  color: var(--text-primary);
}

.speaker-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

/* --- Registration & Fees Section --- */
.fee-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.currency-toggle-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.3rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.currency-btn {
  background: transparent;
  border: none;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.currency-btn.active {
  background: var(--primary);
  color: #ffffff;
}

.fees-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.fee-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.fee-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: scale(1.03);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--grad-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.3rem 1rem;
  border-radius: var(--radius-full);
}

.fee-header {
  margin-bottom: 1.5rem;
}

.fee-category {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.fee-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.fee-price-box {
  margin-bottom: 1.75rem;
  padding: 1rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.fee-amount {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.fee-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

.fee-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.fee-features li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.fee-features li svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* Bank Account & Payment Instructions Box */
.payment-info-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.payment-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
}

.bank-detail-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.bank-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.9rem;
}

.bank-row:last-child {
  border-bottom: none;
}

.bank-label {
  color: var(--text-muted);
  font-weight: 500;
}

.bank-val {
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.copy-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  cursor: pointer;
  color: var(--primary);
  transition: var(--transition);
}

.copy-btn:hover {
  background: var(--primary);
  color: #ffffff;
}

/* --- Publication & Indexing Section --- */
.indexing-banner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2.5rem;
  padding: 2.5rem 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: 3.5rem;
}

.indexing-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.4rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  transition: var(--transition);
}

.indexing-badge:hover {
  border-color: var(--border-focus);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.indexing-badge svg {
  color: var(--secondary);
}

.pub-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pub-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
}

.pub-card h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.pub-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* --- Committees Section --- */
.committee-tabs-nav {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.com-tab-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.com-tab-btn:hover, .com-tab-btn.active {
  background: var(--grad-primary);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.committee-tab-pane {
  display: none;
}

.committee-tab-pane.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.committee-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
}

.committee-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-3px);
}

.committee-avatar {
  width: 68px;
  height: 68px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--bg-surface-elevated);
  border: 2px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.committee-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.committee-role {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
}

.committee-affil {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* --- Venue & Travel Section --- */
.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.venue-info h3 {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.venue-info p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.venue-features-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.venue-feature {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.venue-feature-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(79, 70, 229, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.venue-feature h5 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.venue-feature p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.venue-map-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.map-placeholder {
  height: 340px;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border: 1px dashed var(--border-subtle);
}

/* --- Previous Conferences Archive Section --- */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}

.archive-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.archive-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.archive-year {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 0.35rem;
}

.archive-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
  line-height: 1.3;
}

.archive-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-top: auto;
}

.archive-link-btn {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.4rem;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-sm);
}

.archive-link-btn:hover {
  background: var(--secondary);
  color: #ffffff;
}

/* --- FAQ Section --- */
.faq-wrapper {
  max-width: 800px;
  margin-inline: auto;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--border-focus);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  color: var(--text-primary);
}

.faq-icon {
  transition: transform 0.3s ease;
  color: var(--primary);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 1.25rem;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}

.contact-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
}

.contact-card h4 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
}

.contact-info-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: rgba(79, 70, 229, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-item h5 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.contact-info-item p, .contact-info-item a {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.contact-info-item a:hover {
  color: var(--primary);
}

.contact-form {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- Footer --- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 4.5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  max-width: 360px;
}

.footer-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Interactive Modals --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--bg-surface);
  z-index: 10;
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 2rem;
}

.file-dropzone {
  border: 2px dashed var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  background: var(--bg-surface-elevated);
  cursor: pointer;
  transition: var(--transition);
  margin-top: 0.5rem;
}

.file-dropzone:hover, .file-dropzone.dragover {
  border-color: var(--primary);
  background: rgba(79, 70, 229, 0.05);
}

.file-dropzone svg {
  color: var(--primary);
  margin-bottom: 0.75rem;
}

/* --- Toast Notification --- */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .hero-wrapper {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .fees-grid, .pub-cards-grid {
    grid-template-columns: 1fr;
  }
  .about-grid, .venue-grid, .contact-grid, .payment-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    background: var(--bg-surface-elevated);
    flex-direction: column;
    padding: 2rem;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    gap: 1.25rem;
    box-shadow: var(--shadow-lg);
  }
  .nav-menu.open {
    transform: translateY(0);
  }
  .mobile-toggle {
    display: block;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .timeline-line {
    left: 20px;
  }
  .timeline-item {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding-left: 45px;
  }
  .timeline-node {
    left: 20px;
  }
  .timeline-item:nth-child(even) .timeline-content,
  .timeline-item:nth-child(odd) .timeline-content {
    grid-column: 1;
    text-align: left;
  }
  .timeline-item:nth-child(even) .timeline-date-badge,
  .timeline-item:nth-child(odd) .timeline-date-badge {
    grid-column: 1;
    text-align: left;
    order: -1;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}