/* ========================================
   GANGES ICE FLOW - PREMIUM REDESIGN
   Modern Theme System with Bento Grids
   ======================================== */

/* ========== CSS CUSTOM PROPERTIES ========== */
:root {
  /* Light theme (default) */
  --bg-primary: #FAFBFC;
  --bg-secondary: #F0F0F0;
  --bg-card: #FFFFFF;
  --text-primary: #1A1A1A;
  --text-secondary: #404040;
  --accent-primary: #0052CC;
  --accent-secondary: #008B8B;
  --accent-bright: #FF6B35;
  --border-color: #E0E0E0;
  --shadow-light: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-medium: 0 4px 16px rgba(0,0,0,0.12);
  --shadow-heavy: 0 8px 24px rgba(0,0,0,0.15);
  --glass-bg: rgba(255,255,255,0.8);
  --glass-border: rgba(255,255,255,0.6);

  /* Spacing & Layout */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== GLOBAL STYLES ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
  line-height: 1.6;
  font-weight: 400;
}

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', 'Poppins', serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-family: 'Playfair Display', serif;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-family: 'Playfair Display', serif;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-family: 'Poppins', sans-serif;
}

h4 {
  font-size: 1.25rem;
  font-family: 'Poppins', sans-serif;
}

h5 {
  font-size: 1.1rem;
  font-family: 'Poppins', sans-serif;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.7;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-secondary);
}

/* ========== BUTTONS ========== */
.btn {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-transform: none;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), #0052CC);
  color: white;
  border-color: var(--accent-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-secondary {
  background: var(--accent-secondary);
  color: white;
  border-color: var(--accent-secondary);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-outline-light {
  border: 2px solid white;
  color: white;
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
}

.btn-lg {
  font-size: 1.1rem;
  padding: var(--spacing-md) var(--spacing-2xl);
}

.btn-sm {
  font-size: 0.9rem;
  padding: var(--spacing-xs) var(--spacing-md);
}

/* ========== HEADER & NAVBAR ========== */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.navbar {
  background: var(--bg-primary) !important;
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) 0;
}

.navbar-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary) !important;
  letter-spacing: -1px;
  transition: transform var(--transition-fast);
}

.navbar-brand:hover {
  transform: scale(1.05);
}

.navbar-nav .nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  margin: 0 var(--spacing-sm);
  padding: var(--spacing-sm) 0 !important;
  position: relative;
  transition: color var(--transition-fast);
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--transition-base);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--accent-primary) !important;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 100%;
}

.theme-toggle-btn,
.language-toggle-btn {
  background: transparent !important;
  border: 2px solid var(--accent-primary) !important;
  color: var(--accent-primary) !important;
  padding: var(--spacing-xs) var(--spacing-md) !important;
  margin-left: var(--spacing-md) !important;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.theme-toggle-btn:hover,
.language-toggle-btn:hover {
  background: var(--accent-primary) !important;
  color: white !important;
  transform: scale(1.05);
}

.theme-icon,
.lang-text {
  transition: transform var(--transition-base);
}

.theme-toggle-btn:hover .theme-icon,
.language-toggle-btn:hover .lang-text {
  transform: rotate(20deg);
}

/* ========== HERO SECTION ========== */
.hero-section {
  position: relative;
  padding: 100px var(--spacing-lg);
  background-size: cover;
  background-position: center;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(5, 82, 204, 0.7), rgba(0, 139, 139, 0.7));
  z-index: 1;
}

.hero-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120"><defs><linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:white;stop-opacity:0.1" /><stop offset="100%" style="stop-color:white;stop-opacity:0.05" /></linearGradient></linearGradient></defs><path d="M0,40 Q300,20 600,40 T1200,40 L1200,120 L0,120 Z" fill="url(%23grad)" /></svg>') no-repeat bottom;
  background-size: cover;
  z-index: 2;
}

.hero-overlay {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  color: white;
  animation: fadeInUp 0.8s ease-out;
}

.hero-content h1 {
  color: white;
  margin-bottom: var(--spacing-lg);
  animation: slideInDown 0.8s ease-out;
}

.hero-content p {
  color: rgba(255,255,255,0.95);
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xl);
  animation: slideInUp 0.8s ease-out 0.2s both;
}

.hero-content .btn {
  animation: slideInUp 0.8s ease-out 0.4s both;
  margin: 0 var(--spacing-sm);
}

/* ========== BENTO GRID LAYOUTS ========== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.bento-grid.grid-2x2 {
  grid-template-columns: repeat(2, 1fr);
}

.bento-grid.grid-3x3 {
  grid-template-columns: repeat(3, 1fr);
}

.bento-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.bento-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-heavy);
  border-color: var(--accent-primary);
}

.bento-item.bento-2x1 {
  grid-column: span 2;
}

.bento-item.bento-1x2 {
  grid-row: span 2;
}

.bento-item.bento-2x2 {
  grid-column: span 2;
  grid-row: span 2;
}

/* ========== CARDS ========== */
.card {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-light);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-medium);
  border-color: var(--accent-primary);
}

.card-body {
  padding: var(--spacing-xl);
}

.card-title {
  color: var(--accent-primary);
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

/* ========== GLASS MORPHISM ========== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

/* ========== SECTIONS ========== */
section {
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.bg-light {
  background: var(--bg-secondary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ========== FORMS ========== */
.form-control,
.form-select {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: 'Inter', sans-serif;
  transition: all var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(5, 82, 204, 0.1);
  outline: none;
}

label {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

/* ========== FOOTER ========== */
footer {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
}

footer h6 {
  color: var(--accent-primary);
  font-family: 'Poppins', sans-serif;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.95rem;
  margin-bottom: var(--spacing-md);
}

footer hr {
  background-color: var(--accent-primary) !important;
  height: 2px;
  margin: var(--spacing-md) 0;
}

footer a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

footer .bg-dark {
  background: var(--text-primary) !important;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease-out;
}

.stagger-children > * {
  animation: fadeInUp 0.6s ease-out backwards;
}

.stagger-children > :nth-child(1) { animation-delay: 0s; }
.stagger-children > :nth-child(2) { animation-delay: 0.1s; }
.stagger-children > :nth-child(3) { animation-delay: 0.2s; }
.stagger-children > :nth-child(4) { animation-delay: 0.3s; }
.stagger-children > :nth-child(5) { animation-delay: 0.4s; }
.stagger-children > :nth-child(6) { animation-delay: 0.5s; }

/* ========== UTILITY CLASSES ========== */
.text-accent {
  color: var(--accent-primary);
}

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

.shadow-sm {
  box-shadow: var(--shadow-light);
}

.shadow-md {
  box-shadow: var(--shadow-medium);
}

.shadow-lg {
  box-shadow: var(--shadow-heavy);
}

.rounded-lg {
  border-radius: var(--radius-lg);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.py-5 {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}

/* ========== CAROUSEL OVERRIDES ========== */
.carousel-item {
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-color);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
  background-color: var(--accent-primary);
  border-radius: 50%;
  padding: 10px;
  width: 40px;
  height: 40px;
  transition: all var(--transition-base);
}

.carousel-control-prev-icon:hover,
.carousel-control-next-icon:hover {
  transform: scale(1.1);
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 768px) {
  .bento-grid.grid-2x2,
  .bento-grid.grid-3x3 {
    grid-template-columns: 1fr;
  }

  .bento-item.bento-2x1,
  .bento-item.bento-1x2,
  .bento-item.bento-2x2 {
    grid-column: span 1;
    grid-row: span 1;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  section {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero-section {
    padding: 60px var(--spacing-md);
    min-height: 400px;
  }

  .card-body {
    padding: var(--spacing-lg);
  }

  .navbar-nav {
    gap: var(--spacing-sm);
  }
}

@media (max-width: 576px) {
  .btn {
    width: 100%;
    margin: var(--spacing-sm) 0;
  }

  .hero-content .btn {
    margin: var(--spacing-sm) auto;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  section {
    padding: var(--spacing-xl) var(--spacing-sm);
  }

  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* ========== DARK THEME - MEDIA QUERY ========== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0F1419;
    --bg-secondary: #1a2332;
    --bg-card: #1a2332;
    --text-primary: #E8EEF5;
    --text-secondary: #B8C5D6;
    --accent-primary: #00D9FF;
    --accent-secondary: #4DD0E1;
    --accent-bright: #FF9D00;
    --border-color: #2a3a4a;
    --shadow-light: 0 2px 8px rgba(0,0,0,0.4);
    --shadow-medium: 0 4px 16px rgba(0,0,0,0.5);
    --shadow-heavy: 0 8px 24px rgba(0,0,0,0.6);
    --glass-bg: rgba(26,35,50,0.8);
    --glass-border: rgba(77,208,225,0.2);
  }
}

/* ========== PRINT STYLES ========== */
@media print {
  header,
  footer,
  .no-print {
    display: none;
  }

  body {
    background: white;
    color: black;
  }
}