/* ==========================================================================
   MULTIDISCIPLINARY RESEARCH COLLOQUIUM 2027 (MRC 2027)
   Tezpur University | CMDR & CIIE
   Official Master Stylesheet (CSS3 & Custom Design System)
   ========================================================================== */

/* --- GOOGLE FONTS IMPORT --- */
@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500;600;700;800;900&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,600&display=swap');

/* --- DESIGN TOKENS & ROOT VARIABLES --- */
:root {
  /* Brand Palette (Brochure Inspired & HorizonX Refined) */
  --c-navy-dark: #0A1124;
  --c-navy: #111B35;
  --c-navy-light: #1A2749;
  --c-navy-muted: #24355E;
  
  --c-burgundy: #9D203C;
  --c-burgundy-dark: #7A142C;
  --c-burgundy-light: #B82C4B;
  --c-burgundy-glow: rgba(157, 32, 60, 0.25);
  
  --c-gold: #C7A66A;
  --c-gold-light: #DFC79B;
  --c-gold-dark: #A58448;
  --c-gold-glow: rgba(199, 166, 106, 0.28);
  
  --c-warm-white: #F9F8F5;
  --c-warm-gray: #F0EEEA;
  --c-pure-white: #FFFFFF;
  
  --c-text-primary: #192033;
  --c-text-secondary: #4A5568;
  --c-text-muted: #6E798F;
  --c-text-on-dark: #F5F7FC;
  --c-text-muted-dark: #A4B1CD;
  
  --c-border-light: rgba(17, 27, 53, 0.08);
  --c-border-dark: rgba(255, 255, 255, 0.12);
  --c-border-gold: rgba(199, 166, 106, 0.35);

  /* Typography */
  --font-serif: 'Cinzel', Georgia, 'Times New Roman', serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Layout & Elevations */
  --header-height: 84px;
  --header-height-scrolled: 72px;
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 22px;
  --border-radius-xl: 32px;
  --border-radius-btn: 6px;
  
  --shadow-sm: 0 2px 8px rgba(10, 17, 36, 0.06);
  --shadow-md: 0 10px 30px rgba(10, 17, 36, 0.08);
  --shadow-lg: 0 20px 50px rgba(10, 17, 36, 0.14);
  --shadow-gold: 0 12px 35px var(--c-gold-glow);
  --shadow-burgundy: 0 12px 35px var(--c-burgundy-glow);
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- GLOBAL RESET & BASE STYLES --- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--c-text-primary);
  background-color: var(--c-warm-white);
  line-height: 1.65;
  font-weight: 400;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, .font-serif {
  font-family: var(--font-serif);
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--c-navy-dark);
}

h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.7rem);
  line-height: 1.25;
}

h3 {
  font-size: clamp(1.3rem, 2vw, 1.75rem);
  line-height: 1.35;
}

h4 {
  font-size: 1.2rem;
  line-height: 1.4;
}

p {
  margin-bottom: 1.25rem;
}

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

a:hover {
  color: var(--c-burgundy-light);
}

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

/* --- UTILITY CLASSES --- */
.bg-navy-dark { background-color: var(--c-navy-dark) !important; color: var(--c-text-on-dark); }
.bg-navy { background-color: var(--c-navy) !important; color: var(--c-text-on-dark); }
.bg-navy-light { background-color: var(--c-navy-light) !important; color: var(--c-text-on-dark); }
.bg-burgundy { background-color: var(--c-burgundy) !important; color: #ffffff; }
.bg-warm-white { background-color: var(--c-warm-white) !important; }
.bg-warm-gray { background-color: var(--c-warm-gray) !important; }
.bg-pure-white { background-color: var(--c-pure-white) !important; }

.text-navy { color: var(--c-navy) !important; }
.text-navy-dark { color: var(--c-navy-dark) !important; }
.text-burgundy { color: var(--c-burgundy) !important; }
.text-gold { color: var(--c-gold) !important; }
.text-gold-light { color: var(--c-gold-light) !important; }
.text-muted-dark { color: var(--c-text-muted-dark) !important; }

.border-gold { border-color: var(--c-border-gold) !important; }
.border-light-subtle { border-color: var(--c-border-light) !important; }

/* Subtle Section Padding */
.section-padding {
  padding: 5.5rem 0;
}
.section-padding-sm {
  padding: 3.5rem 0;
}
.section-padding-lg {
  padding: 7rem 0;
}

@media (max-width: 768px) {
  .section-padding { padding: 3.5rem 0; }
  .section-padding-lg { padding: 4.5rem 0; }
}

/* Section Header Typography */
.section-header {
  margin-bottom: 3.5rem;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--c-burgundy);
  padding: 0.35rem 1rem;
  background: rgba(157, 32, 60, 0.08);
  border: 1px solid rgba(157, 32, 60, 0.15);
  border-radius: 50px;
  margin-bottom: 1rem;
}
.section-tag-gold {
  color: var(--c-gold-light);
  background: rgba(199, 166, 106, 0.12);
  border-color: rgba(199, 166, 106, 0.3);
}
.section-tag-white {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

.section-title {
  margin-bottom: 1rem;
  font-weight: 700;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--c-text-secondary);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
}
.section-subtitle-dark {
  color: var(--c-text-muted-dark);
}

/* --- TOP ANNOUNCEMENT RIBBON --- */
.top-ribbon {
  background: var(--c-navy-dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.82rem;
  padding: 0.5rem 0;
  font-weight: 500;
}
.top-ribbon a {
  color: var(--c-gold-light);
  transition: color var(--transition-fast);
}
.top-ribbon a:hover {
  color: #FFFFFF;
}
.top-ribbon .divider {
  display: inline-block;
  width: 1px;
  height: 12px;
  background: rgba(255, 255, 255, 0.2);
  margin: 0 0.75rem;
}

/* --- NAVIGATION BAR --- */
.navbar-custom {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border-light);
  transition: all var(--transition-normal);
  padding: 0.85rem 0;
  position: sticky;
  top: 0;
  z-index: 1030;
}

.navbar-custom.navbar-scrolled {
  padding: 0.5rem 0;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 10px 30px rgba(10, 17, 36, 0.08);
  border-bottom-color: rgba(199, 166, 106, 0.25);
}

.navbar-brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-fast);
}
.navbar-custom.navbar-scrolled .brand-logo-img {
  height: 44px;
}

.brand-text-block {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--c-navy-dark);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-sub {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--c-burgundy);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-inst {
  font-size: 0.68rem;
  color: var(--c-text-muted);
  font-weight: 500;
}

/* Nav Links */
.navbar-nav {
  gap: 0.2rem;
}

.nav-link {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--c-navy-dark) !important;
  letter-spacing: 0.06em;
  padding: 0.6rem 0.85rem !important;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  text-transform: uppercase;
}

.nav-link:hover {
  color: var(--c-burgundy) !important;
  background: rgba(157, 32, 60, 0.05);
}

.nav-link.active {
  color: var(--c-burgundy) !important;
  font-weight: 800;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0px;
  left: 0.85rem;
  right: 0.85rem;
  height: 2px;
  background: var(--c-burgundy);
  border-radius: 2px;
}

/* Dropdown Menu (Desktop Hover + Smooth Slide) */
.navbar-nav .dropdown-menu {
  border: 1px solid var(--c-border-light);
  border-radius: var(--border-radius-md);
  box-shadow: 0 16px 40px rgba(10, 17, 36, 0.12);
  padding: 0.5rem;
  min-width: 230px;
  background: #FFFFFF;
  margin-top: 0.5rem;
  transform-origin: top center;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

@media (min-width: 992px) {
  .navbar-nav .nav-item.dropdown:hover .dropdown-menu {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .navbar-nav .dropdown-menu {
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
  }
}

.dropdown-item {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--c-navy-dark);
  padding: 0.6rem 1rem;
  border-radius: 6px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dropdown-item:hover, .dropdown-item:focus {
  background-color: rgba(157, 32, 60, 0.06);
  color: var(--c-burgundy);
  transform: translateX(4px);
}

.dropdown-item.active {
  background-color: var(--c-burgundy);
  color: #FFFFFF;
}

/* Prominent Register Button */
.btn-nav-register {
  background: linear-gradient(135deg, var(--c-burgundy) 0%, var(--c-burgundy-dark) 100%);
  color: #FFFFFF !important;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.6rem 1.3rem;
  border-radius: var(--border-radius-btn, 6px);
  box-shadow: 0 4px 14px var(--c-burgundy-glow);
  transition: all var(--transition-fast);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-nav-register:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(157, 32, 60, 0.4);
  color: #FFFFFF !important;
  background: linear-gradient(135deg, var(--c-burgundy-light) 0%, var(--c-burgundy) 100%);
}

/* Mobile Navbar Styles */
.navbar-toggler {
  border: none;
  padding: 0.5rem;
}
.navbar-toggler:focus {
  box-shadow: none;
  outline: 2px solid var(--c-burgundy);
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    background: #FFFFFF;
    padding: 1.25rem;
    border-radius: var(--border-radius-md);
    margin-top: 0.75rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--c-border-light);
  }
  .navbar-nav .dropdown-menu {
    background: var(--c-warm-white);
    border: none;
    box-shadow: none;
    padding-left: 1rem;
    margin: 0.25rem 0 0.5rem 0;
  }
  .nav-link.active::after {
    display: none;
  }
}

/* --- BUTTON SYSTEM --- */
.btn-mrc {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  padding: 0.85rem 1.85rem;
  border-radius: var(--border-radius-btn, 6px);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  text-decoration: none;
  cursor: pointer;
}

.btn.rounded-pill {
  border-radius: var(--border-radius-btn, 6px) !important;
}

.btn-mrc-primary {
  background: linear-gradient(135deg, var(--c-burgundy) 0%, var(--c-burgundy-dark) 100%);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-burgundy);
}
.btn-mrc-primary:hover {
  background: linear-gradient(135deg, var(--c-burgundy-light) 0%, var(--c-burgundy) 100%);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(157, 32, 60, 0.35);
}

.btn-mrc-gold {
  background: linear-gradient(135deg, var(--c-gold) 0%, var(--c-gold-dark) 100%);
  color: #0A1124;
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-gold);
}
.btn-mrc-gold:hover {
  background: linear-gradient(135deg, var(--c-gold-light) 0%, var(--c-gold) 100%);
  color: #0A1124;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(199, 166, 106, 0.45);
}

.btn-mrc-outline-light {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.28);
}
.btn-mrc-outline-light:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  border-color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-mrc-outline-dark {
  background: transparent;
  color: var(--c-navy-dark);
  border: 1.5px solid var(--c-navy);
}
.btn-mrc-outline-dark:hover {
  background: var(--c-navy);
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* --- HERO SECTION (HORIZONX CINEMATIC INSPIRATION) --- */
.hero-conference {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  background-color: var(--c-navy-dark);
  overflow: hidden;
  color: #FFFFFF;
  padding: 5rem 0 6rem 0;
}

/* Hero Background Layers */
.hero-bg-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.28;
  filter: saturate(0.85) contrast(1.1);
  transform: scale(1.02);
  transition: transform 12s cubic-bezier(0.1, 1, 0.1, 1);
}

.hero-conference:hover .hero-bg-media {
  transform: scale(1.06);
}

.hero-gradient-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 17, 36, 0.96) 0%,
    rgba(17, 27, 53, 0.88) 45%,
    rgba(157, 32, 60, 0.45) 85%,
    rgba(10, 17, 36, 0.94) 100%
  );
}

.hero-mesh-glow {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(199, 166, 106, 0.15) 0%, rgba(157, 32, 60, 0) 70%);
  filter: blur(80px);
  pointer-events: none;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.45rem 1.25rem;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #FFFFFF;
  margin-bottom: 1.5rem;
}

.hero-badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 10px var(--c-gold);
  display: inline-block;
  animation: pulseGold 2s infinite;
}

@keyframes pulseGold {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.hero-title-main {
  font-family: var(--font-serif);
  font-size: clamp(2.3rem, 5.2vw, 4.4rem);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.hero-title-main span.highlight-gold {
  color: var(--c-gold-light);
  display: inline-block;
}

.hero-theme-lead {
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 500;
  color: var(--c-text-muted-dark);
  letter-spacing: 0.04em;
  margin-bottom: 1.75rem;
  max-width: 820px;
}
.hero-theme-lead strong {
  color: #FFFFFF;
  font-weight: 700;
}

/* Institutional Banner in Hero */
.hero-organizer-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--border-radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.25rem;
  max-width: 780px;
}

.hero-organizer-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.9);
}
.hero-organizer-item i {
  color: var(--c-gold);
  font-size: 1.1rem;
}

/* Countdown Card */
.countdown-box {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--border-radius-lg);
  padding: 1.75rem;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

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

.countdown-tile {
  background: rgba(10, 17, 36, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-md);
  padding: 1rem 0.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.countdown-tile:hover {
  border-color: var(--c-gold);
  transform: translateY(-3px);
}

.countdown-tile::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}

.countdown-number {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.7rem);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1;
  display: block;
  margin-bottom: 0.35rem;
}

.countdown-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--c-gold-light);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  display: block;
}

/* --- PAGE HERO (FOR SUBPAGES) --- */
.subpage-hero {
  background-color: var(--c-navy-dark);
  position: relative;
  overflow: hidden;
  padding: 4.5rem 0 4rem 0;
  color: #FFFFFF;
  border-bottom: 1px solid rgba(199, 166, 106, 0.2);
}

.subpage-hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(157, 32, 60, 0.35) 0%, transparent 60%),
              linear-gradient(180deg, rgba(10, 17, 36, 0.95) 0%, rgba(17, 27, 53, 0.98) 100%);
}

.breadcrumb-custom {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.breadcrumb-custom a {
  color: var(--c-gold-light);
}
.breadcrumb-custom span {
  color: rgba(255, 255, 255, 0.5);
  margin: 0 0.5rem;
}
.breadcrumb-custom .current {
  color: rgba(255, 255, 255, 0.85);
}

/* --- CARD SYSTEM --- */
.mrc-card {
  background: #FFFFFF;
  border: 1px solid var(--c-border-light);
  border-radius: var(--border-radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.mrc-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(157, 32, 60, 0.2);
}

.mrc-card-dark {
  background: var(--c-navy);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--c-text-on-dark);
}
.mrc-card-dark:hover {
  border-color: var(--c-gold);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.4);
}

/* Icon Box inside Cards */
.card-icon-box {
  width: 58px;
  height: 58px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  transition: transform var(--transition-fast);
}

.card-icon-burgundy {
  background: rgba(157, 32, 60, 0.08);
  color: var(--c-burgundy);
  border: 1px solid rgba(157, 32, 60, 0.15);
}

.card-icon-gold {
  background: rgba(199, 166, 106, 0.12);
  color: var(--c-gold-dark);
  border: 1px solid rgba(199, 166, 106, 0.25);
}

.mrc-card:hover .card-icon-box {
  transform: scale(1.08);
}

/* --- RESEARCH TRACKS (CALL FOR PAPERS & HOME PREVIEW) --- */
.track-card {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: #FFFFFF;
  border: 1px solid var(--c-border-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.track-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-gold);
}

.track-card-header {
  padding: 2rem 2rem 1.5rem 2rem;
  border-bottom: 1px solid var(--c-border-light);
  position: relative;
}

.track-number {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-burgundy);
  margin-bottom: 0.5rem;
}

.track-card-body {
  padding: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.track-topics-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.track-topics-list li {
  font-size: 0.92rem;
  color: var(--c-text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  line-height: 1.45;
}

.track-topics-list li i {
  color: var(--c-gold);
  margin-top: 0.2rem;
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* --- TIMELINE (IMPORTANT DATES) --- */
.timeline-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 0;
}

.timeline-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold) 0%, var(--c-burgundy) 50%, var(--c-navy) 100%);
  transform: translateX(-50%);
}

@media (max-width: 768px) {
  .timeline-wrapper::before {
    left: 28px;
  }
}

.timeline-item {
  position: relative;
  margin-bottom: 3.5rem;
  width: 50%;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 3rem;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 3rem;
  text-align: left;
}

@media (max-width: 768px) {
  .timeline-item {
    width: 100% !important;
    left: 0 !important;
    padding-left: 70px !important;
    padding-right: 0 !important;
    text-align: left !important;
  }
}

.timeline-marker {
  position: absolute;
  top: 18px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 4px solid var(--c-burgundy);
  box-shadow: 0 0 0 4px rgba(157, 32, 60, 0.2);
  z-index: 2;
  transition: transform var(--transition-fast);
}

.timeline-item:nth-child(odd) .timeline-marker {
  right: -12px;
}

.timeline-item:nth-child(even) .timeline-marker {
  left: -12px;
}

@media (max-width: 768px) {
  .timeline-marker {
    left: 17px !important;
  }
}

.timeline-card {
  background: #FFFFFF;
  border: 1px solid var(--c-border-light);
  border-radius: var(--border-radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

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

.timeline-date-badge {
  display: inline-block;
  background: rgba(157, 32, 60, 0.08);
  color: var(--c-burgundy);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.9rem;
  border-radius: 50px;
  margin-bottom: 0.75rem;
}

/* --- PEOPLE & COMMITTEE CARDS --- */
.person-card {
  background: #FFFFFF;
  border: 1px solid var(--c-border-light);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
}

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

.person-img-container {
  height: 280px;
  background-color: var(--c-warm-gray);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.person-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform var(--transition-normal);
}

.person-card:hover .person-img {
  transform: scale(1.04);
}

.person-avatar-placeholder {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--c-navy-light);
  color: var(--c-gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.person-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(10, 17, 36, 0.85);
  backdrop-filter: blur(8px);
  color: var(--c-gold-light);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  border: 1px solid rgba(199, 166, 106, 0.3);
}

.person-body {
  padding: 1.75rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.person-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-navy-dark);
  margin-bottom: 0.35rem;
}

.person-role {
  color: var(--c-burgundy);
  font-weight: 700;
  font-size: 0.86rem;
  margin-bottom: 0.5rem;
}

.person-affiliation {
  color: var(--c-text-secondary);
  font-size: 0.88rem;
  line-height: 1.45;
  margin-bottom: 0;
}

/* Patron VIP Feature Card */
.patron-feature-card {
  background: #FFFFFF;
  border: 1px solid var(--c-border-gold);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}
.patron-feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

/* --- REGISTRATION TABLE & PRICING --- */
.fee-card {
  background: #FFFFFF;
  border: 1px solid var(--c-border-light);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
}

.fee-card.highlight {
  border-color: var(--c-burgundy);
  box-shadow: 0 16px 45px var(--c-burgundy-glow);
}

.fee-card:hover {
  transform: translateY(-8px);
}

.fee-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-burgundy);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.35rem 1.2rem;
  border-radius: 50px;
}

.fee-price {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 800;
  color: var(--c-navy-dark);
  line-height: 1;
  margin: 1.5rem 0 0.5rem 0;
}

.fee-currency {
  font-size: 1.2rem;
  color: var(--c-burgundy);
  vertical-align: top;
  margin-right: 0.2rem;
}

/* --- CONTACT & VENUE LAYOUT --- */
.contact-info-card {
  background: #FFFFFF;
  border: 1px solid var(--c-border-light);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  height: 100%;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.contact-item:last-child {
  margin-bottom: 0;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-md);
  background: rgba(157, 32, 60, 0.08);
  color: var(--c-burgundy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.tour-card {
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background: #FFFFFF;
  border: 1px solid var(--c-border-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  height: 100%;
}
.tour-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.tour-img {
  height: 180px;
  width: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}
.tour-card:hover .tour-img {
  transform: scale(1.05);
}

/* --- FOOTER --- */
.site-footer {
  background-color: var(--c-navy-dark);
  color: var(--c-text-muted-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 5rem 0 2rem 0;
  font-size: 0.92rem;
}

.site-footer a {
  color: var(--c-text-muted-dark);
  transition: color var(--transition-fast);
}

.site-footer a:hover {
  color: var(--c-gold-light);
}

.footer-heading {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 35px;
  height: 2px;
  background: var(--c-gold);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links li a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-links li a::before {
  content: '›';
  color: var(--c-gold);
  font-size: 1.1rem;
  line-height: 1;
}

.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.82rem;
}

/* --- MANDATORY FLOATING BACK TO TOP BUTTON --- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-burgundy);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 8px 24px var(--c-burgundy-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal), background-color var(--transition-fast);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--c-burgundy-light);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(157, 32, 60, 0.45);
  color: #FFFFFF;
}

.back-to-top:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 3px;
}

@media (max-width: 576px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
}

/* --- INTERSECTION OBSERVER SCROLL REVEALS --- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }

/* Accessible motion reduction */
@media (prefers-reduced-motion: reduce) {
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .hero-bg-media {
    transform: none !important;
    transition: none !important;
  }
  .hero-badge-pulse {
    animation: none !important;
  }
  html {
    scroll-behavior: auto !important;
  }
}