/* ============================================
   ALEXANDRIA SANCTUARY - DESIGN SYSTEM
   Contemplative, Serene, Sacred
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES
   ============================================ */
:root {
  /* === COLOR SYSTEM === */
  /* Primary - Deep Navy (Night Sky, Depth) */
  --color-primary-50: #e8eef7;
  --color-primary-100: #c5d3eb;
  --color-primary-200: #9fb5dd;
  --color-primary-300: #7896cf;
  --color-primary-400: #5a7fc4;
  --color-primary-500: #3c68b9;
  --color-primary-600: #3560b2;
  --color-primary-700: #2b55aa;
  --color-primary-800: #224ba2;
  --color-primary-900: #0a1628;
  --color-primary-950: #060d18;

  /* Accent - Warm Gold (Wisdom, Sacred) */
  --color-gold-50: #fefaed;
  --color-gold-100: #fcf2d1;
  --color-gold-200: #f9e4a3;
  --color-gold-300: #f5d175;
  --color-gold-400: #e8b84a;
  --color-gold-500: #c9a227;
  --color-gold-600: #a6841f;
  --color-gold-700: #83671a;
  --color-gold-800: #604b14;
  --color-gold-900: #3d300d;

  /* Neutral - Warm Cream & Stone */
  --color-cream-50: #fdfcfa;
  --color-cream-100: #f9f7f3;
  --color-cream-200: #f5f1e8;
  --color-cream-300: #ebe5d8;
  --color-cream-400: #d9d0be;
  --color-cream-500: #c7bba4;
  --color-cream-600: #a89b82;
  --color-cream-700: #8a7d66;
  --color-cream-800: #6b604d;
  --color-cream-900: #4d4536;

  /* Stone (for text and borders) */
  --color-stone-50: #f8f8f6;
  --color-stone-100: #f0efec;
  --color-stone-200: #e2e0db;
  --color-stone-300: #c8c5bc;
  --color-stone-400: #a9a498;
  --color-stone-500: #8a8476;
  --color-stone-600: #6f695c;
  --color-stone-700: #5a554a;
  --color-stone-800: #48443b;
  --color-stone-900: #3a3731;

  /* === DARK THEME (Default - Contemplative) === */
  --bg-primary: var(--color-primary-950);
  --bg-secondary: var(--color-primary-900);
  --bg-tertiary: #0f1d2f;
  --bg-elevated: rgba(15, 29, 47, 0.9);
  --bg-glass: rgba(10, 22, 40, 0.85);

  --text-primary: var(--color-cream-200);
  --text-secondary: var(--color-stone-400);
  --text-tertiary: var(--color-stone-500);
  --text-gold: var(--color-gold-500);

  --border-subtle: rgba(201, 162, 39, 0.1);
  --border-default: rgba(201, 162, 39, 0.2);
  --border-gold: rgba(201, 162, 39, 0.4);

  /* === LIGHT THEME (Parchment) === */
  [data-theme="light"] {
    --bg-primary: var(--color-cream-100);
    --bg-secondary: var(--color-cream-50);
    --bg-tertiary: var(--color-cream-200);
    --bg-elevated: rgba(253, 252, 250, 0.95);
    --bg-glass: rgba(249, 247, 243, 0.9);

    --text-primary: var(--color-primary-900);
    --text-secondary: var(--color-stone-600);
    --text-tertiary: var(--color-stone-500);

    --border-subtle: rgba(10, 22, 40, 0.05);
    --border-default: rgba(10, 22, 40, 0.1);
  }

  /* === TYPOGRAPHY === */
  --font-serif: 'Cormorant Garamond', 'Noto Serif KR', Georgia, serif;
  --font-sans: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Cinzel', var(--font-serif);

  /* Font Sizes - Elegant, Readable */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 1.875rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 4rem;
  --text-6xl: 5rem;
  --text-7xl: 6rem;

  /* Font Weights */
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights - Generous for readability */
  --leading-none: 1;
  --leading-tight: 1.2;
  --leading-snug: 1.4;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;
  --leading-loose: 2;

  /* Letter Spacing */
  --tracking-tighter: -0.03em;
  --tracking-tight: -0.01em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;
  --tracking-widest: 0.2em;

  /* === 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;
  --space-40: 10rem;
  --space-48: 12rem;

  /* === LAYOUT === */
  --max-width-prose: 65ch;
  --max-width-sm: 640px;
  --max-width-md: 768px;
  --max-width-lg: 1024px;
  --max-width-xl: 1280px;
  --max-width-2xl: 1440px;

  --container-padding: clamp(1.5rem, 5vw, 4rem);

  /* === BORDERS === */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* === SHADOWS === */
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.15);
  --shadow-glow-gold: 0 0 40px rgba(201, 162, 39, 0.15);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.1);

  /* === TRANSITIONS === */
  --ease-gentle: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);

  --duration-slow: 600ms;
  --duration-medium: 400ms;
  --duration-fast: 200ms;

  /* === Z-INDEX === */
  --z-below: -1;
  --z-base: 0;
  --z-above: 1;
  --z-header: 100;
  --z-overlay: 200;
  --z-modal: 300;
}

/* ============================================
   BASE RESET & DEFAULTS
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Selection */
::selection {
  background-color: var(--color-gold-500);
  color: var(--color-primary-950);
}

/* Focus */
:focus-visible {
  outline: 2px solid var(--color-gold-500);
  outline-offset: 3px;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-gentle);
}

/* Images */
img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Lists */
ul, ol {
  list-style: none;
}

/* Buttons */
button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

/* ============================================
   TYPOGRAPHY UTILITIES
   ============================================ */
.font-serif { font-family: var(--font-serif); }
.font-sans { font-family: var(--font-sans); }
.font-display { font-family: var(--font-display); }

.text-gold {
  color: var(--color-gold-500);
}

.text-gradient-gold {
  background: linear-gradient(135deg, var(--color-gold-400), var(--color-gold-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Decorative heading with lines */
.heading-decorated {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.heading-decorated::before,
.heading-decorated::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
}

/* ============================================
   ANIMATION KEYFRAMES
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

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

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes breathe {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.02); }
}

@keyframes candleFlicker {
  0%, 100% { opacity: 1; }
  25% { opacity: 0.9; }
  50% { opacity: 1; }
  75% { opacity: 0.85; }
}

/* ============================================
   ANIMATION UTILITIES
   ============================================ */
.animate-fade-in {
  animation: fadeIn 1s var(--ease-smooth) forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 1s var(--ease-smooth) forwards;
}

.animate-fade-in-slow {
  animation: fadeInSlow 2s var(--ease-smooth) forwards;
}

.animate-breathe {
  animation: breathe 6s var(--ease-gentle) infinite;
}

.animate-float {
  animation: float 6s var(--ease-gentle) infinite;
}

/* Stagger delays */
.delay-200 { animation-delay: 200ms; }
.delay-400 { animation-delay: 400ms; }
.delay-600 { animation-delay: 600ms; }
.delay-800 { animation-delay: 800ms; }
.delay-1000 { animation-delay: 1000ms; }
.delay-1500 { animation-delay: 1500ms; }
.delay-2000 { animation-delay: 2000ms; }

/* Initially hidden for animation */
[data-animate] {
  opacity: 0;
}

[data-animate].is-visible {
  opacity: 1;
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-gold-700);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gold-600);
}

/* ============================================
   PROSE STYLES
   ============================================ */
.prose {
  max-width: var(--max-width-prose);
  color: var(--text-secondary);
  font-size: var(--text-lg);
  line-height: var(--leading-loose);
}

.prose p {
  margin-bottom: var(--space-6);
}

.prose h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--text-primary);
  margin-top: var(--space-12);
  margin-bottom: var(--space-6);
}

.prose blockquote {
  padding-left: var(--space-6);
  border-left: 2px solid var(--color-gold-500);
  font-style: italic;
  color: var(--text-primary);
}

/* ============================================
   DECORATIVE ELEMENTS
   ============================================ */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
  margin: var(--space-12) 0;
}

.divider-short {
  width: 80px;
  height: 2px;
  background: var(--color-gold-500);
  margin: var(--space-8) auto;
}

.ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  color: var(--color-gold-500);
  font-size: var(--text-xl);
}

.ornament::before,
.ornament::after {
  content: '✦';
  font-size: var(--text-sm);
  opacity: 0.6;
}