/* ============================================
   KASHIKA STAY — Design System
   "Where Devotion Meets Comfort"
   Sacred Gold & River Blue Palette
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400;1,500;1,600&family=Inter:wght@300;400;500;600;700&family=Noto+Serif+Devanagari:wght@400;500;600;700&display=swap');

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Primary Colors — Temple Gold */
  --color-primary: #C8A456;
  --color-primary-light: #E0C978;
  --color-primary-dark: #8B6914;
  --color-primary-glow: rgba(200, 164, 86, 0.3);
  --color-primary-subtle: rgba(200, 164, 86, 0.08);

  /* Secondary Colors — Ganga Blue */
  --color-secondary: #1A3A5C;
  --color-secondary-light: #2A5A8C;
  --color-secondary-dark: #0D1F33;

  /* Accent — Sacred Sindoor */
  --color-accent: #D4451A;
  --color-accent-light: #E8693E;
  --color-accent-glow: rgba(212, 69, 26, 0.3);

  /* Saffron — Spiritual warmth */
  --color-saffron: #FF6B2B;
  --color-saffron-light: #FF8F5E;

  /* Backgrounds */
  --bg-primary: #09090E;
  --bg-secondary: #0F0F18;
  --bg-surface: #16162A;
  --bg-elevated: #1E1E38;
  --bg-card: #1A1A30;
  --bg-glass: rgba(26, 26, 48, 0.6);

  /* Text */
  --text-primary: #F5F0E8;
  --text-secondary: #A09B8E;
  --text-tertiary: #6B6760;
  --text-accent: var(--color-primary);
  --text-inverse: #09090E;

  /* Borders */
  --border-subtle: rgba(200, 164, 86, 0.1);
  --border-medium: rgba(200, 164, 86, 0.2);
  --border-strong: rgba(200, 164, 86, 0.4);

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #C8A456 0%, #E0C978 50%, #8B6914 100%);
  --gradient-hero: linear-gradient(180deg, rgba(9,9,14,0) 0%, rgba(9,9,14,0.4) 40%, rgba(9,9,14,0.95) 100%);
  --gradient-section: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  --gradient-card: linear-gradient(145deg, var(--bg-card) 0%, var(--bg-elevated) 100%);
  --gradient-glow: radial-gradient(ellipse at center, var(--color-primary-glow) 0%, transparent 70%);
  --gradient-sacred: linear-gradient(135deg, #C8A456 0%, #D4451A 50%, #FF6B2B 100%);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-hindi: 'Noto Serif Devanagari', serif;

  /* Font Sizes — Fluid Typography */
  --text-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.8rem);
  --text-sm: clamp(0.8rem, 0.75rem + 0.3vw, 0.9rem);
  --text-base: clamp(0.9rem, 0.85rem + 0.35vw, 1.05rem);
  --text-lg: clamp(1.05rem, 0.95rem + 0.5vw, 1.25rem);
  --text-xl: clamp(1.2rem, 1rem + 0.8vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  --text-3xl: clamp(1.8rem, 1.4rem + 1.8vw, 2.8rem);
  --text-4xl: clamp(2.2rem, 1.5rem + 3vw, 4rem);
  --text-5xl: clamp(2.8rem, 1.8rem + 4vw, 5.5rem);
  --text-hero: clamp(3rem, 2rem + 5vw, 7rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px var(--color-primary-glow);
  --shadow-glow-accent: 0 0 30px var(--color-accent-glow);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index layers */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-overlay: 30;
  --z-modal: 40;
  --z-nav: 50;
  --z-toast: 60;

  /* Container */
  --container-max: 1400px;
  --container-narrow: 900px;
}

/* --- CSS Reset --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

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

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

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

button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

/* --- Scrollbar Styling --- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary-dark);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* --- Selection --- */
::selection {
  background: var(--color-primary);
  color: var(--text-inverse);
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--space-24);
  position: relative;
}

.section-sm {
  padding-block: var(--space-16);
}

/* --- Typography Utilities --- */
.font-display {
  font-family: var(--font-display);
}

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

.text-gradient {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-sacred {
  background: var(--gradient-sacred);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Section Title Component --- */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.section-badge .badge-icon {
  font-size: 1em;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 650px;
  line-height: 1.8;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header .section-subtitle {
  margin-inline: auto;
}

/* --- Decorative Divider --- */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-block: var(--space-8);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}

.divider .divider-icon {
  color: var(--color-primary);
  font-size: var(--text-xl);
}

/* --- Button System --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn-primary {
  background: var(--gradient-gold);
  color: var(--text-inverse);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--color-primary-glow);
  color: var(--text-inverse);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-subtle);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
}

.btn-ghost:hover {
  color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.btn-lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-xs);
}

/* --- Card System --- */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  border-color: var(--border-medium);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  opacity: 1;
}

.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* --- Animation Keyframes --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 15px var(--color-primary-glow); }
  50% { box-shadow: 0 0 35px var(--color-primary-glow); }
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes flickerDiya {
  0%, 100% { opacity: 1; transform: scale(1); }
  25% { opacity: 0.85; transform: scale(1.05); }
  50% { opacity: 0.95; transform: scale(0.98); }
  75% { opacity: 0.9; transform: scale(1.02); }
}

@keyframes ripple {
  0% { transform: scale(1); opacity: 0.4; }
  100% { transform: scale(2.5); opacity: 0; }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes dash-rotate {
  0% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -100; }
}

/* --- Scroll Animation Classes --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays for children */
.stagger-children > * {
  transition-delay: calc(var(--stagger-index, 0) * 120ms);
}

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

  html {
    scroll-behavior: auto;
  }
}

/* Focus visible styles */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* --- Responsive Breakpoints Utility --- */
@media (max-width: 768px) {
  .section {
    padding-block: var(--space-16);
  }

  .container {
    padding-inline: var(--space-4);
  }

  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .hide-desktop {
    display: none !important;
  }
}