/* ==========================================================================
   Base & CSS Variables (Theme: Academic Gold + Engineering Cyber Slate)
   ========================================================================== */
:root {
  --bg-primary: #090e17;
  --bg-secondary: #101826;
  --bg-card: rgba(16, 24, 38, 0.78);
  --bg-card-hover: rgba(22, 33, 52, 0.88);
  --border-subtle: rgba(255, 255, 255, 0.09);
  --border-focus: #38bdf8;
  
  /* Academic Gold & Engineering Cyan Accents */
  --gold-primary: #e5b869;
  --gold-light: #f7d58b;
  --gold-dark: #b88d3b;
  --gold-glow: rgba(229, 184, 105, 0.28);
  
  --cyan-primary: #38bdf8;
  --cyan-glow: rgba(56, 189, 248, 0.25);
  --blue-primary: #3b82f6;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-gold: #f5cf7b;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 60%),
    radial-gradient(circle at 85% 85%, rgba(229, 184, 105, 0.05) 0%, transparent 50%),
    linear-gradient(rgba(56, 189, 248, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.025) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Canvas background */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.site-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Mobile-first Container */
.container {
  width: 100%;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 14, 23, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 0;
  transition: background var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-degree {
  background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
  color: #0c1017;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  box-shadow: 0 0 12px var(--gold-glow);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: #fff;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.btn-lang {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 38px;
}

.btn-lang:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-rsvp-header {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
  color: #090e17;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 38px;
}

.btn-rsvp-header:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--gold-glow);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
  text-align: center;
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(229, 184, 105, 0.12);
  border: 1px solid rgba(229, 184, 105, 0.35);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
  box-shadow: 0 0 20px rgba(229, 184, 105, 0.15);
}

.badge-icon {
  font-size: 1.15rem;
}

.badge-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gold-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-title {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hero-greeting {
  font-family: var(--font-main);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.hero-main {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.25rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 40%, var(--gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-graduate {
  margin-bottom: 1.85rem;
}

.graduate-name-wrapper {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  margin-bottom: 0.35rem;
}

.degree-prefix {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.7rem;
  color: var(--gold-light);
}

.graduate-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.graduate-degree-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  max-width: 500px;
  margin: 0 auto;
}

/* Crucial Arrival Card */
.crucial-card {
  width: 100%;
  max-width: 580px;
  background: rgba(18, 27, 43, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(229, 184, 105, 0.4);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45), 0 0 25px rgba(229, 184, 105, 0.12);
  position: relative;
  overflow: hidden;
}

.crucial-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan-primary), var(--gold-light), var(--cyan-primary));
}

.crucial-time-row {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.time-main {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.time-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 0.15rem;
}

.time-value {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: #ffffff;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.25);
}

.time-divider {
  width: 60px;
  height: 1px;
  background: var(--border-subtle);
}

.time-notice {
  text-align: center;
}

.notice-badge {
  display: inline-block;
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.4);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.5rem;
  letter-spacing: 0.06em;
}

.notice-text {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.45;
}

.notice-text strong {
  color: var(--gold-light);
}

/* Button & CTA styles */
.hero-cta-group {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 420px;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 1.4rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  min-height: 52px;
  text-align: center;
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.btn-primary {
  background: #1e293b;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover, .btn-primary:active {
  background: #334155;
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(15, 23, 42, 0.6);
  color: var(--cyan-primary);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.btn-secondary:hover, .btn-secondary:active {
  background: rgba(56, 189, 248, 0.12);
  border-color: var(--cyan-primary);
  transform: translateY(-1px);
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
  color: #090e17;
  box-shadow: 0 4px 18px var(--gold-glow);
}

.btn-gold:hover, .btn-gold:active {
  filter: brightness(1.08);
  box-shadow: 0 6px 24px rgba(229, 184, 105, 0.45);
  transform: translateY(-1px);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Summary Section Cards
   ========================================================================== */
.section {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

.summary-section {
  padding-top: 1rem;
  padding-bottom: 2rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.summary-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.summary-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.18);
}

.card-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-icon-wrap svg {
  width: 24px;
  height: 24px;
}

.ceremony-icon {
  background: rgba(56, 189, 248, 0.15);
  color: var(--cyan-primary);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.dinner-icon {
  background: rgba(229, 184, 105, 0.15);
  color: var(--gold-light);
  border: 1px solid rgba(229, 184, 105, 0.3);
}

.card-meta {
  flex: 1;
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.tag-ceremony {
  color: var(--cyan-primary);
}

.tag-dinner {
  color: var(--gold-light);
}

.card-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 0.25rem;
}

.card-time {
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.card-location {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section-header {
  text-align: center;
  margin-bottom: 2.25rem;
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gold-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.85rem;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-bottom: 0.65rem;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto;
}

/* ==========================================================================
   Timeline Section
   ========================================================================== */
.timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  gap: 1.25rem;
  max-width: 680px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 15px;
  bottom: 20px;
  left: 28px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-primary) 0%, var(--gold-primary) 100%);
  opacity: 0.4;
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 1.15rem;
  position: relative;
}

.timeline-badge {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-full);
  background: #111827;
  border: 2px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 2;
  box-shadow: 0 0 16px rgba(0, 0, 0, 0.5);
}

.badge-time {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.82rem;
  color: #ffffff;
}

.highlight-item .timeline-badge {
  border-color: #ef4444;
  box-shadow: 0 0 16px rgba(239, 68, 68, 0.35);
}

.gold-badge {
  border-color: var(--gold-primary) !important;
  box-shadow: 0 0 16px var(--gold-glow) !important;
}

.gold-badge .badge-time {
  color: var(--gold-light);
}

.timeline-card {
  flex: 1;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.15rem 1.25rem;
  transition: all var(--transition-fast);
}

.timeline-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: var(--bg-card-hover);
}

.timeline-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.45rem;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.timeline-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.chip-alert {
  background: rgba(239, 68, 68, 0.18);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.chip-ceremony {
  background: rgba(56, 189, 248, 0.18);
  color: var(--cyan-primary);
  border: 1px solid rgba(56, 189, 248, 0.35);
}

.chip-photo {
  background: rgba(168, 85, 247, 0.18);
  color: #d8b4fe;
  border: 1px solid rgba(168, 85, 247, 0.35);
}

.chip-transit {
  background: rgba(100, 116, 139, 0.2);
  color: #cbd5e1;
  border: 1px solid rgba(100, 116, 139, 0.35);
}

.chip-party {
  background: rgba(229, 184, 105, 0.2);
  color: var(--gold-light);
  border: 1px solid rgba(229, 184, 105, 0.4);
}

.timeline-venue, .timeline-duration {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.timeline-card-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.45rem;
}

.timeline-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.timeline-card-desc strong {
  color: #ffffff;
}

/* ==========================================================================
   Locations & Venue Cards
   ========================================================================== */
.venue-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.venue-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  position: relative;
  display: flex;
  flex-direction: column;
}

.venue-card.highlight-venue {
  border-color: rgba(229, 184, 105, 0.35);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(229, 184, 105, 0.08);
}

.venue-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--cyan-primary);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  align-self: flex-start;
  margin-bottom: 0.75rem;
}

.gold-pill {
  color: var(--gold-light);
  background: rgba(229, 184, 105, 0.1);
  border-color: rgba(229, 184, 105, 0.3);
}

.venue-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.ceremony-dot {
  background: var(--cyan-primary);
  box-shadow: 0 0 8px var(--cyan-primary);
}

.dinner-dot {
  background: var(--gold-light);
  box-shadow: 0 0 8px var(--gold-light);
}

.venue-name {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.4rem;
}

.venue-address {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  margin-bottom: 1.15rem;
  line-height: 1.4;
}

.icon-inline {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  margin-top: 2px;
}

.venue-info-box {
  background: rgba(10, 15, 24, 0.75);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.venue-info-box h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.transport-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.transport-list li strong {
  color: #ffffff;
}

.nav-button-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  margin-top: auto;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.65rem 0.6rem;
  background: #1e293b;
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  min-height: 44px;
}

.nav-btn:hover, .nav-btn:active {
  background: #334155;
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.nav-btn-icon {
  font-size: 1rem;
}

/* Transit Banner */
.transit-banner {
  background: rgba(18, 26, 42, 0.75);
  border: 1px dashed rgba(56, 189, 248, 0.4);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.transit-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.transit-content h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--cyan-primary);
  margin-bottom: 0.25rem;
}

.transit-content p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* ==========================================================================
   Practical Info / FAQ
   ========================================================================== */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.15rem;
}

.faq-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
  transition: all var(--transition-fast);
}

.faq-card:hover {
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-2px);
}

.faq-icon {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
}

.faq-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.45rem;
}

.faq-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   RSVP Form Section
   ========================================================================== */
.rsvp-container {
  max-width: 620px;
}

.rsvp-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(229, 184, 105, 0.4);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.4rem;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(229, 184, 105, 0.12);
}

.rsvp-header {
  text-align: center;
  margin-bottom: 1.6rem;
}

.rsvp-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
  color: #0c1017;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.08em;
  margin-bottom: 0.65rem;
}

.rsvp-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.75rem;
  color: #ffffff;
  margin-bottom: 0.45rem;
}

.rsvp-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.rsvp-form {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
  background: rgba(10, 15, 24, 0.85);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  color: #ffffff;
  transition: all var(--transition-fast);
  outline: none;
  min-height: 48px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--gold-light);
  box-shadow: 0 0 14px var(--gold-glow);
  background: rgba(14, 21, 33, 0.95);
}

.form-select option {
  background: #111827;
  color: #fff;
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.rsvp-status-msg {
  font-size: 0.88rem;
  text-align: center;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  display: none;
}

.rsvp-status-msg.success {
  display: block;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  color: #86efac;
}

/* ==========================================================================
   Calendar Modal
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(4, 7, 14, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: #101826;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  padding: 1.5rem;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
  transform: translateY(12px);
  transition: transform var(--transition-fast);
}

.modal-backdrop.is-open .modal-dialog {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1;
  padding: 0.2rem 0.5rem;
}

.modal-close:hover {
  color: #fff;
}

.modal-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.cal-options-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cal-option-btn {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: #ffffff;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cal-option-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.cal-opt-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.cal-opt-meta {
  display: flex;
  flex-direction: column;
}

.cal-opt-meta strong {
  font-size: 0.92rem;
  color: #fff;
}

.cal-opt-meta span {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background: rgba(8, 12, 19, 0.9);
  padding: 2.5rem 0 3.5rem;
  text-align: center;
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  color: #ffffff;
}

.footer-subtitle {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--gold-light);
}

.footer-note {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 480px;
}

.btn-share-page {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.85rem;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-share-page:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

/* ==========================================================================
   Animations & Responsive Breakpoints
   ========================================================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-up {
  animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }

/* Desktop & Tablet Breakpoints */
@media (min-width: 640px) {
  .crucial-time-row {
    flex-direction: row;
    justify-content: space-around;
    text-align: left;
  }

  .time-divider {
    width: 1px;
    height: 70px;
  }

  .time-notice {
    text-align: left;
    max-width: 320px;
  }

  .hero-cta-group {
    flex-direction: row;
    max-width: 100%;
    justify-content: center;
  }

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

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

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

  .form-actions {
    flex-direction: row;
  }

  .hero-main {
    font-size: 3rem;
  }

  .graduate-name {
    font-size: 2.75rem;
  }

  .degree-prefix {
    font-size: 2.25rem;
  }
}

@media (min-width: 1024px) {
  .hero-section {
    padding-top: 4.5rem;
    padding-bottom: 4rem;
  }

  .hero-main {
    font-size: 3.5rem;
  }

  .graduate-name {
    font-size: 3.25rem;
  }

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

  .section-title {
    font-size: 2.4rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}