/* 
 * The Bharat Bridge — Flagship Stylesheet (2026 Premium Dark Gold Luxury Redesign)
 * Brand Color Palette:
 *   Obsidian Black : #060709 (Primary Deep Dark Background)
 *   Charcoal Slate  : #0F1115 (Secondary Card/Section Background)
 *   Pure Metallic Gold: Gradient of #BF953F, #FCF6BA, #B38728, #FBF5B7, #AA771C
 *   Luxury Accent Gold: #D4AF37 (Solid highlights)
 *   Off-white Slate: #F3F4F6 (Primary Reading Text)
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Brand colors */
  --gold-primary:     #D4AF37;
  --gold-hover:       #AA771C;
  --gold-light:       #FBF5B7;
  --gold-glow:        rgba(212, 175, 55, 0.15);
  --gold-gradient:    linear-gradient(135deg, #BF953F 0%, #FCF6BA 25%, #B38728 50%, #FBF5B7 75%, #AA771C 100%);
  --gold-gradient-hover: linear-gradient(135deg, #AA771C 0%, #FBF5B7 25%, #B38728 50%, #FCF6BA 75%, #BF953F 100%);

  /* Modern backgrounds */
  --bg-obsidian:      #060709;
  --bg-charcoal:      #0F1115;
  --bg-card:          rgba(15, 17, 22, 0.75);
  
  /* Borders & Shadows */
  --border-gold:      1px solid rgba(212, 175, 55, 0.15);
  --border-gold-hover: 1px solid rgba(212, 175, 55, 0.4);
  --shadow-gold:      0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(212, 175, 55, 0.05);
  --shadow-gold-hover: 0 15px 40px rgba(0, 0, 0, 0.7), 0 0 30px rgba(212, 175, 55, 0.15);

  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body:    'Inter', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-obsidian);
  color: #E2E8F0; /* Slate 200 */
  font-family: var(--font-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.625;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: #F1F5F9; /* Slate 100 */
  font-weight: 700;
}

a { text-decoration: none; transition: all 0.25s ease; }
p { line-height: 1.75; color: #94A3B8; /* Slate 400 */ }

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-obsidian);
}
::-webkit-scrollbar-thumb {
  background: rgba(212, 175, 55, 0.25);
  border-radius: 9999px;
  border: 2px solid var(--bg-obsidian);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gold-primary);
}

/* ─── Modern Premium Cards ───────────────────────────────────────────────── */
.premium-card {
  background-color: var(--bg-card);
  border: var(--border-gold);
  box-shadow: var(--shadow-gold);
  border-radius: 1.25rem; /* 20px */
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.premium-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 175, 55, 0.45);
  box-shadow: var(--shadow-gold-hover);
}

.premium-card-dark {
  background-color: rgba(10, 11, 14, 0.85);
  border: 1px solid rgba(212, 175, 55, 0.2);
  box-shadow: var(--shadow-gold-hover);
  border-radius: 1.25rem;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(20px);
}
.premium-card-dark:hover {
  transform: translateY(-6px);
  border-color: var(--gold-primary);
  box-shadow: 0 20px 50px rgba(212, 175, 55, 0.2);
}

/* ─── Interactive Buttons ────────────────────────────────────────────────── */
.btn-primary {
  background: var(--gold-gradient);
  color: #060709 !important;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.825rem;
  letter-spacing: 0.05em;
  padding: 0.8rem 1.75rem;
  border-radius: 9999px;
  border: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.2);
  text-transform: uppercase;
}
.btn-primary:hover {
  background: var(--gold-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(212, 175, 55, 0.4);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background-color: var(--bg-charcoal);
  color: #F1F5F9;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.825rem;
  letter-spacing: 0.04em;
  padding: 0.8rem 1.75rem;
  border-radius: 9999px;
  border: 1px solid rgba(212, 175, 55, 0.25);
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.btn-secondary:hover {
  background-color: rgba(212, 175, 55, 0.08);
  border-color: var(--gold-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.1);
}

.btn-outline {
  background-color: transparent;
  color: var(--gold-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.825rem;
  letter-spacing: 0.04em;
  padding: 0.8rem 1.75rem;
  border-radius: 9999px;
  border: 1.5px solid var(--gold-primary);
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.btn-outline:hover {
  background: var(--gold-gradient);
  color: #060709 !important;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.25);
}

/* ─── Premium Form Controls ──────────────────────────────────────────────── */
.form-input {
  background-color: rgba(15, 17, 22, 0.65);
  border: 1.5px solid rgba(212, 175, 55, 0.18);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: #F1F5F9;
  width: 100%;
  outline: none;
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.form-input:focus {
  border-color: var(--gold-primary);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.25);
}
select.form-input option {
  background-color: var(--bg-charcoal);
  color: #F1F5F9;
}

/* ─── Infinite Marquee System ────────────────────────────────────────────── */
.marquee-wrapper {
  overflow: hidden;
  user-select: none;
  position: relative;
  width: 100%;
  mask-image: linear-gradient(to right, transparent 0%, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 8%, #000 92%, transparent 100%);
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee-scroll var(--marquee-speed, 30s) linear infinite;
  will-change: transform;
}
.marquee-track.reverse {
  animation-direction: reverse;
}
.marquee-strip {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-right: 2rem;
  flex-shrink: 0;
}
@keyframes marquee-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ─── Navigation Dropdown Menu ───────────────────────────────────────────── */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background-color: rgba(10, 11, 14, 0.95);
  border: var(--border-gold);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  border-radius: 1rem;
  padding: 0.75rem;
  min-width: 250px;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.group:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

/* ─── Custom Responsive Details ──────────────────────────────────────────── */
.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background-color: rgba(212, 175, 55, 0.08);
  color: var(--gold-primary);
  border: 1px solid rgba(212, 175, 55, 0.2);
}
.badge-saffron, .badge-navy, .badge-green {
  background-color: rgba(212, 175, 55, 0.08) !important;
  color: var(--gold-primary) !important;
  border: 1px solid rgba(212, 175, 55, 0.2) !important;
}

/* Gold Text Highlight Utility */
.text-gold-gradient {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}
.text-gold {
  color: var(--gold-primary);
}

/* ─── Scroll Reveal Mechanics ────────────────────────────────────────────── */
.reveal-fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-fade-up.active {
  opacity: 1;
  transform: translateY(0);
}
.reveal-slide-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-slide-left.active {
  opacity: 1;
  transform: translateX(0);
}
.reveal-slide-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-slide-right.active {
  opacity: 1;
  transform: translateX(0);
}
.reveal-scale-up {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-scale-up.active {
  opacity: 1;
  transform: scale(1);
}

/* Gold Metallic Stripe */
.tricolor-stripe {
  height: 4px;
  width: 100%;
  background: var(--gold-gradient);
}

/* Parallax Section Overlay redesign */
.parallax-section {
  position: relative;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

/* Interactive Map Nodes styles */
.map-node {
  position: relative;
  cursor: pointer;
}
.map-node::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--gold-primary);
  opacity: 0.4;
  animation: pulse-gold 2s infinite;
}
@keyframes pulse-gold {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(2.4); opacity: 0; }
}