/* ==========================================================================
   ICNBH 2026 - International Congress on Neurology and Brain Health
   Production Design System & Master Stylesheet
   Designed for Academic Prestige, High Usability & cPanel Deployment
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties / Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand Palette: Academic Navy, Conference Gold, Medical Sapphire */
  --color-primary-950: #061527;
  --color-primary-900: #0a2240;
  --color-primary-800: #103460;
  --color-primary-700: #1a487f;
  --color-primary-600: #2560a2;

  --color-gold-600: #92400e;
  --color-gold-500: #b45309;
  --color-gold-400: #d97706;
  --color-gold-300: #f59e0b;
  --color-gold-100: #fef3c7;
  --color-gold-50:  #fffbeb;

  --color-cyan-600: #0369a1;
  --color-cyan-500: #0284c7;
  --color-cyan-400: #38bdf8;
  --color-cyan-50:  #f0f9ff;

  --color-slate-900: #0f172a;
  --color-slate-800: #1e293b;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748b;
  --color-slate-400: #94a3b8;
  --color-slate-300: #cbd5e1;
  --color-slate-200: #e2e8f0;
  --color-slate-100: #f1f5f9;
  --color-slate-50:  #f8fafc;
  --color-white:     #ffffff;

  /* Semantic Variables */
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-subtle: #f1f5f9;
  --text-main: #1e293b;
  --text-muted: #475569;
  --text-light: #64748b;
  --border-color: #e2e8f0;
  --border-subtle: #edf2f7;

  /* Typography */
  --font-serif: 'Newsreader', Georgia, Cambria, 'Times New Roman', serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.06);

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Layout */
  --container-max: 1240px;
  --header-height: 84px;
  --topbar-height: 38px;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-main);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--color-cyan-600);
  text-decoration: none;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

a:hover {
  color: var(--color-primary-900);
}

button, input, select, textarea {
  font: inherit;
}

/* --------------------------------------------------------------------------
   3. Typography Hierarchy
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary-900);
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.75rem;
  letter-spacing: -0.015em;
}

h1 {
  font-size: clamp(2.25rem, 4vw + 1rem, 3.4rem);
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.85rem, 3vw + 0.5rem, 2.5rem);
  line-height: 1.2;
}

h3 {
  font-size: clamp(1.35rem, 2vw + 0.3rem, 1.75rem);
}

h4 {
  font-size: 1.25rem;
  font-family: var(--font-sans);
  font-weight: 700;
}

p {
  margin-bottom: 1rem;
}

.lead-text {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--color-slate-700);
}

.text-gold {
  color: var(--color-gold-400);
}

.text-cyan {
  color: var(--color-cyan-600);
}

.text-navy {
  color: var(--color-primary-900);
}

.text-muted {
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   4. Layout Containers & Grid System
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-narrow {
  max-width: 900px;
}

.section {
  padding-top: 5rem;
  padding-bottom: 5rem;
  position: relative;
}

.section-sm {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.section-lg {
  padding-top: 6.5rem;
  padding-bottom: 6.5rem;
}

.bg-white {
  background-color: var(--color-white);
}

.bg-slate {
  background-color: var(--color-slate-100);
}

.bg-navy {
  background-color: var(--color-primary-900);
  color: var(--color-white);
}

.bg-navy h1, .bg-navy h2, .bg-navy h3, .bg-navy h4 {
  color: var(--color-white);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold-500);
  margin-bottom: 0.75rem;
}

.bg-navy .section-eyebrow {
  color: var(--color-gold-300);
}

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

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-slate-600);
  line-height: 1.6;
}

.bg-navy .section-subtitle {
  color: var(--color-slate-300);
}

/* --------------------------------------------------------------------------
   5. Buttons & Interactive Controls
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.25;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-sm);
}

.btn:focus-visible {
  outline: 3px solid var(--color-gold-300);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-primary-900);
  color: var(--color-white);
  border-color: var(--color-primary-900);
}

.btn-primary:hover {
  background-color: var(--color-primary-800);
  border-color: var(--color-primary-800);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-gold {
  background-color: var(--color-gold-500);
  color: var(--color-white);
  border-color: var(--color-gold-500);
}

.btn-gold:hover {
  background-color: var(--color-gold-600);
  border-color: var(--color-gold-600);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary-900);
  border-color: var(--color-primary-900);
}

.btn-outline:hover {
  background-color: var(--color-primary-900);
  color: var(--color-white);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline-white:hover {
  background-color: var(--color-white);
  color: var(--color-primary-900);
  border-color: var(--color-white);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.84rem;
}

.btn-lg {
  padding: 0.95rem 2rem;
  font-size: 1.05rem;
}

/* --------------------------------------------------------------------------
   6. Header, Announcement Top-Bar & Navigation
   -------------------------------------------------------------------------- */
.top-bar {
  background-color: var(--color-primary-950);
  color: var(--color-slate-300);
  font-size: 0.8125rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.top-bar-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.top-bar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.top-bar-item svg {
  color: var(--color-gold-400);
}

.top-bar-actions a {
  color: var(--color-slate-300);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.top-bar-actions a:hover {
  color: var(--color-gold-300);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
  transition: all 0.25s ease;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo-img {
  height: 48px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 0.5rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-slate-700);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary-900);
  background-color: var(--color-slate-100);
}

.nav-link.active {
  color: var(--color-primary-900);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.85rem;
  right: 0.85rem;
  height: 2px;
  background-color: var(--color-gold-500);
  border-radius: 2px;
}

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

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-primary-900);
  font-size: 1.5rem;
  padding: 0.5rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.mobile-nav-toggle:focus-visible {
  outline: 2px solid var(--color-gold-500);
}

/* --------------------------------------------------------------------------
   7. Hero Banner (Academic / Dignified Style)
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: linear-gradient(135deg, #06172d 0%, #0a2240 50%, #0f305c 100%);
  color: var(--color-white);
  padding: 4.5rem 0 5.5rem 0;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 85% 20%, rgba(56, 189, 248, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 15% 80%, rgba(217, 119, 6, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 3.5rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-gold {
  background-color: rgba(217, 119, 6, 0.2);
  color: #fde047;
  border: 1px solid rgba(217, 119, 6, 0.4);
}

.badge-cyan {
  background-color: rgba(56, 189, 248, 0.15);
  color: #7dd3fc;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.hero-title {
  color: var(--color-white);
  font-size: clamp(2.4rem, 4.2vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.hero-theme {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-style: italic;
  color: var(--color-gold-300);
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.hero-description {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-slate-200);
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin-bottom: 2.25rem;
  padding: 1.25rem 1.5rem;
  background-color: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(4px);
}

.meta-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.meta-block svg {
  width: 24px;
  height: 24px;
  color: var(--color-gold-300);
  flex-shrink: 0;
}

.meta-block-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-slate-400);
  margin-bottom: 0.1rem;
}

.meta-block-value {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-white);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Hero Right: Card preview & Countdown */
.hero-card-widget {
  background-color: rgba(10, 34, 64, 0.85);
  border: 1px solid rgba(217, 119, 6, 0.35);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(12px);
}

.countdown-box {
  margin-bottom: 1.75rem;
  text-align: center;
}

.countdown-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold-300);
  margin-bottom: 1rem;
}

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

.countdown-item {
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.5rem;
  text-align: center;
}

.countdown-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-white);
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.countdown-lbl {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-slate-400);
}

.hero-quick-bullet-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
}

.hero-quick-bullet-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.875rem;
  color: var(--color-slate-200);
  margin-bottom: 0.65rem;
  line-height: 1.45;
}

.hero-quick-bullet-list svg {
  width: 16px;
  height: 16px;
  color: var(--color-cyan-400);
  margin-top: 3px;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   8. Stats & Trust Metrics Strip
   -------------------------------------------------------------------------- */
.stats-strip {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--border-color);
  padding: 2.25rem 0;
}

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

.stat-item {
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background-color: var(--border-color);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary-900);
  line-height: 1.1;
  font-family: var(--font-serif);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   9. Cards, Features & Grids
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-slate-300);
}

.card-clickable {
  cursor: pointer;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--color-slate-100);
  color: var(--color-primary-900);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.card:hover .feature-icon-box {
  background-color: var(--color-primary-900);
  color: var(--color-gold-300);
}

.feature-icon-box svg {
  width: 26px;
  height: 26px;
}

/* --------------------------------------------------------------------------
   10. Chairperson Welcome Statement Section
   -------------------------------------------------------------------------- */
.welcome-box {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.welcome-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  align-items: stretch;
}

.welcome-photo-col {
  position: relative;
  background-color: var(--color-primary-950);
}

.welcome-photo-col img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.welcome-content-col {
  padding: 3rem 3.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.welcome-salutation {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-primary-900);
  margin-bottom: 1.25rem;
}

.welcome-quote {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-slate-700);
  margin-bottom: 1.5rem;
}

.welcome-signature {
  margin-top: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.welcome-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary-900);
}

.welcome-role {
  font-size: 0.9rem;
  color: var(--color-gold-500);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   11. Speakers Grid & Profile Cards
   -------------------------------------------------------------------------- */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 2rem;
}

.speaker-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}

.speaker-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-gold-400);
}

.speaker-image-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background-color: var(--color-primary-950);
}

.speaker-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.speaker-card:hover .speaker-image-wrap img {
  transform: scale(1.04);
}

.speaker-role-tag {
  position: absolute;
  bottom: 0.75rem;
  left: 0.75rem;
  right: 0.75rem;
  background-color: rgba(6, 21, 39, 0.88);
  backdrop-filter: blur(4px);
  color: var(--color-gold-300);
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

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

.speaker-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--color-primary-900);
}

.speaker-specialty {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-cyan-600);
  margin-bottom: 0.75rem;
}

.speaker-assignment {
  font-size: 0.85rem;
  color: var(--color-slate-600);
  line-height: 1.5;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
}

/* --------------------------------------------------------------------------
   12. Programme Interactive Tabs & Schedule Timelines
   -------------------------------------------------------------------------- */
.programme-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.programme-tab-btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 0.85rem 1.75rem;
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 200px;
}

.programme-tab-btn:hover {
  border-color: var(--color-primary-900);
  background-color: var(--color-slate-50);
}

.programme-tab-btn.active {
  background-color: var(--color-primary-900);
  border-color: var(--color-primary-900);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.programme-tab-btn .tab-day {
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.2;
}

.programme-tab-btn.active .tab-day {
  color: var(--color-gold-300);
}

.programme-tab-btn .tab-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.programme-tab-btn.active .tab-date {
  color: var(--color-slate-200);
}

.schedule-panel {
  display: none;
}

.schedule-panel.active {
  display: block;
}

.schedule-day-intro {
  background-color: var(--color-slate-100);
  border-left: 4px solid var(--color-gold-500);
  padding: 1.25rem 1.75rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 2rem;
}

.schedule-day-focus {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-900);
  margin-bottom: 0.25rem;
}

.schedule-day-sub {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.schedule-table-wrap {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
}

.schedule-table th {
  background-color: var(--color-primary-950);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 1rem 1.5rem;
  text-align: left;
}

.schedule-table td {
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

.schedule-table tr:last-child td {
  border-bottom: none;
}

.schedule-table tr:hover td {
  background-color: #fafbfc;
}

.time-col {
  width: 160px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary-900);
  white-space: nowrap;
}

.session-title-text {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-slate-900);
  margin-bottom: 0.35rem;
}

.session-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  margin-right: 0.5rem;
}

.badge-keynote {
  background-color: var(--color-gold-100);
  color: var(--color-gold-600);
  border: 1px solid var(--color-gold-300);
}

.badge-workshop {
  background-color: var(--color-cyan-50);
  color: var(--color-cyan-600);
  border: 1px solid var(--color-cyan-400);
}

.badge-break {
  background-color: var(--color-slate-100);
  color: var(--color-slate-600);
}

.badge-clinical {
  background-color: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.session-meta-note {
  font-size: 0.85rem;
  color: var(--color-slate-500);
}

/* --------------------------------------------------------------------------
   13. Pricing Cards & Fee Tables
   -------------------------------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.75rem;
  margin-bottom: 3.5rem;
}

.pricing-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.2s ease;
}

.pricing-card.featured {
  border-color: var(--color-gold-500);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}

.pricing-card-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-gold-500);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-full);
}

.pricing-category {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary-900);
  margin-bottom: 0.75rem;
  text-align: center;
}

.pricing-prices {
  margin: 1.5rem 0;
  padding: 1.25rem;
  background-color: var(--color-slate-50);
  border-radius: var(--radius-lg);
  text-align: center;
}

.price-early {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-primary-900);
  font-family: var(--font-serif);
  line-height: 1;
}

.price-sub {
  font-size: 0.8rem;
  color: var(--color-gold-600);
  font-weight: 700;
  text-transform: uppercase;
  margin-top: 0.35rem;
}

.price-standard-row {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.875rem;
  color: var(--color-slate-700);
  margin-bottom: 0.75rem;
}

.pricing-features svg {
  width: 18px;
  height: 18px;
  color: var(--color-cyan-600);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Comprehensive Fee Table */
.data-table-wrap {
  overflow-x: auto;
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  background-color: var(--color-primary-950);
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1.15rem 1.5rem;
  text-align: left;
}

.data-table td {
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.95rem;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background-color: var(--color-slate-50);
}

/* --------------------------------------------------------------------------
   14. Forms & Input Validation
   -------------------------------------------------------------------------- */
.form-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.75rem 3rem;
  box-shadow: var(--shadow-md);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group.col-full {
  grid-column: span 2;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-slate-800);
  margin-bottom: 0.5rem;
}

.form-label .req {
  color: #dc2626;
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: 0.95rem;
  border: 1px solid var(--color-slate-300);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-slate-900);
  transition: all 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary-900);
  box-shadow: 0 0 0 3px rgba(10, 34, 64, 0.12);
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--color-slate-600);
}

.form-checkbox input {
  margin-top: 0.25rem;
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary-900);
}

.form-alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  display: none;
}

.form-alert.alert-success {
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form-alert.alert-error {
  background-color: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* --------------------------------------------------------------------------
   15. Modals & Accordions
   -------------------------------------------------------------------------- */
.accordion {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  overflow: hidden;
}

.accordion-item {
  border-bottom: 1px solid var(--border-color);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.35rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-900);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.accordion-trigger:hover {
  background-color: var(--color-slate-50);
}

.accordion-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.2s ease;
  color: var(--color-gold-500);
  flex-shrink: 0;
}

.accordion-item.open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  display: none;
  padding: 0 1.5rem 1.5rem 1.5rem;
  font-size: 0.95rem;
  color: var(--color-slate-700);
  line-height: 1.7;
}

.accordion-item.open .accordion-content {
  display: block;
}

/* --------------------------------------------------------------------------
   16. Venue & Travel Layout
   -------------------------------------------------------------------------- */
.venue-hero-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 3.5rem;
}

.venue-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
}

.venue-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 420px;
}

.venue-info-box {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.room-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.room-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.room-card h4 {
  color: var(--color-primary-900);
  margin-bottom: 0.35rem;
}

/* --------------------------------------------------------------------------
   17. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-primary-950);
  color: var(--color-slate-300);
  padding-top: 5rem;
  padding-bottom: 2.5rem;
  border-top: 3px solid var(--color-gold-500);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.25fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-logo-img {
  height: 52px;
  width: auto;
  margin-bottom: 1.25rem;
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--color-slate-400);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.footer-heading {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold-300);
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: var(--color-slate-300);
  font-size: 0.875rem;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: var(--color-gold-300);
  padding-left: 4px;
}

.footer-contact-box {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.875rem;
  margin-bottom: 0.85rem;
  color: var(--color-slate-300);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-gold-400);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.8125rem;
  color: var(--color-slate-400);
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-legal-links a {
  color: var(--color-slate-400);
}

.footer-legal-links a:hover {
  color: var(--color-gold-300);
}

/* --------------------------------------------------------------------------
   18. Print Media Stylesheet (Optimized for Conference Agenda & Abstract)
   -------------------------------------------------------------------------- */
@media print {
  .top-bar, .site-header, .hero-overlay, .btn, .programme-tabs, .site-footer {
    display: none !important;
  }

  body {
    background-color: #fff !important;
    color: #000 !important;
    font-size: 11pt !important;
  }

  .schedule-panel {
    display: block !important;
    page-break-after: always;
  }

  .schedule-table {
    border: 1px solid #333 !important;
  }

  .schedule-table th, .schedule-table td {
    border: 1px solid #666 !important;
    color: #000 !important;
    background: none !important;
  }
}

/* --------------------------------------------------------------------------
   19. Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .welcome-grid {
    grid-template-columns: 1fr;
  }

  .welcome-photo-col {
    max-height: 380px;
  }

  .venue-hero-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .room-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 72px;
  }

  .top-bar {
    display: none;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem;
    gap: 1rem;
    display: none;
    overflow-y: auto;
    border-top: 1px solid var(--border-color);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-link {
    font-size: 1.15rem;
    width: 100%;
    padding: 0.75rem 0;
  }

  .nav-cta-group {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .stat-item:nth-child(2)::after {
    display: none;
  }

  .welcome-content-col {
    padding: 2rem 1.5rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-group.col-full {
    grid-column: span 1;
  }

  .form-card {
    padding: 2rem 1.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal-links {
    justify-content: center;
    flex-wrap: wrap;
  }
}