/* ============================================
   DECCAN CHILL - MODERN DESIGN SYSTEM
   ============================================ */

:root {
  /* Light Mode Colors */
  --bg-primary: #FFFFFF;
  --bg-surface: #F7F9FC;
  --bg-tertiary: #E8F3FF;
  --text-primary: #0F3A5D;
  --text-secondary: #4A5568;
  --text-tertiary: #7A8A9E;
  --accent-warm: #FF6B35;
  --accent-warm-dark: #E55A2B;
  --border-color: #D0D8E0;
  --shadow-sm: 0 2px 8px rgba(15, 58, 93, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 58, 93, 0.12);
  --shadow-lg: 0 12px 48px rgba(15, 58, 93, 0.15);

  /* Spacing */
  --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;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', 'Segoe UI', sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-hindi: 'Poppins', sans-serif;

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

/* Dark Mode */
html.dark-mode {
  --bg-primary: #0A0E1B;
  --bg-surface: #1a2540;
  --bg-tertiary: #2d3f52;
  --text-primary: #E8F3FF;
  --text-secondary: #B0BCC4;
  --text-tertiary: #7A8A9E;
  --border-color: #2d3f52;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.5);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: var(--transition-smooth);
  line-height: 1.6;
}

html.hindi-lang {
  font-family: var(--font-hindi);
}

html.hindi-lang h1,
html.hindi-lang h2,
html.hindi-lang h3,
html.hindi-lang h4,
html.hindi-lang h5,
html.hindi-lang h6 {
  font-family: var(--font-hindi);
  font-weight: 600;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 6vw, 3.5rem); }
h2 { font-size: clamp(2rem, 5vw, 2.8rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

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

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

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

/* ============================================
   NAVBAR & HEADER
   ============================================ */

header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
}

.navbar-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-warm));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: var(--transition-fast);
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
  transition: var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-warm);
  transition: width 0.3s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-controls {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.toggle-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-primary);
  transition: var(--transition-fast);
  padding: var(--spacing-xs);
}

.toggle-btn:hover {
  color: var(--accent-warm);
  transform: scale(1.1);
}

.cta-btn {
  background-color: var(--accent-warm);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition-fast);
  border: none;
  cursor: pointer;
}

.cta-btn:hover {
  background-color: var(--accent-warm-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu {
    display: block;
    cursor: pointer;
  }
}

/* ============================================
   HERO SECTIONS
   ============================================ */

.hero {
  position: relative;
  overflow: hidden;
  padding: 6rem var(--spacing-lg);
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-surface));
  border-bottom: 1px solid var(--border-color);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,107,53,0.05)" fill-opacity="1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,144C960,149,1056,139,1152,128C1248,117,1344,107,1392,101.3L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
  background-repeat: no-repeat;
  background-size: cover;
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  animation: fadeInUp 0.8s ease-out;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   BENTO GRID SYSTEM
   ============================================ */

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

.bento-grid.asymmetric {
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: auto;
}

.bento-tile {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.bento-tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-warm);
}

.bento-tile img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.bento-tile.large {
  grid-column: span 2;
  grid-row: span 2;
}

.bento-tile.large img {
  height: 400px;
}

.bento-tile.wide {
  grid-column: span 2;
}

.bento-tile.wide img {
  height: 300px;
}

.bento-tile.tall {
  grid-row: span 2;
}

.bento-tile.tall img {
  height: 400px;
}

.bento-content {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.bento-content h3 {
  margin-bottom: var(--spacing-md);
  font-size: 1.35rem;
}

.bento-content p {
  flex: 1;
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

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

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.card-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition-fast);
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font-heading);
}

.btn-primary {
  background-color: var(--accent-warm);
  color: white;
}

.btn-primary:hover {
  background-color: var(--accent-warm-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--accent-warm);
  border: 2px solid var(--accent-warm);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-outline:hover {
  background-color: var(--bg-surface);
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.footer-section a {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-section a:hover {
  color: var(--accent-warm);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-copyright {
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  font-weight: 500;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent-warm);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

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

.animate-slide-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-right {
  animation: slideInRight 0.6s ease-out;
}

/* Staggered animation */
.stagger > * {
  animation: fadeInUp 0.6s ease-out;
  animation-fill-mode: both;
}

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

/* ============================================
   UTILITIES
   ============================================ */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.section.alternate {
  background-color: var(--bg-tertiary);
}

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

.text-accent {
  color: var(--accent-warm);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  .bento-tile.large {
    grid-column: span 2;
  }

  .bento-tile.wide {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
  }

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

  .bento-tile,
  .bento-tile.large,
  .bento-tile.wide,
  .bento-tile.tall {
    grid-column: span 1 !important;
    grid-row: span 1 !important;
  }

  .bento-tile img,
  .bento-tile.large img,
  .bento-tile.wide img,
  .bento-tile.tall img {
    height: 200px !important;
  }

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

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

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

@media (max-width: 480px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .bento-grid.asymmetric {
    grid-template-columns: 1fr;
  }

  .navbar-container {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }

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

/* ============================================
   LANGUAGE & THEME SUPPORT
   ============================================ */

[data-hidden] {
  display: none !important;
}

[data-visible] {
  display: block;
}

.theme-toggle-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.lang-flag {
  font-size: 1.25rem;
  margin-right: 0.25rem;
}

/* ============================================
   ACCENT HIGHLIGHTS
   ============================================ */

.accent-line::before {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-warm), transparent);
  margin-bottom: var(--spacing-md);
}

.accent-highlight {
  background: linear-gradient(120deg, rgba(255, 107, 53, 0.1), transparent);
  padding: var(--spacing-lg);
  border-left: 4px solid var(--accent-warm);
  border-radius: var(--radius-md);
}