/**
 * Prayer Trusting Jesus - Design System v2
 * A unified design language combining editorial elegance with sacred aesthetics
 */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */

:root {
  /* === Color Palette === */

  /* Primary - Deep Sacred Blues */
  --color-primary-900: #0c1929;
  --color-primary-800: #142338;
  --color-primary-700: #1a3a5c;
  --color-primary-600: #1e4976;
  --color-primary-500: #2563eb;
  --color-primary-400: #60a5fa;
  --color-primary-300: #93c5fd;

  /* Accent - Sacred Gold */
  --color-gold-900: #78350f;
  --color-gold-700: #b45309;
  --color-gold-500: #d4a853;
  --color-gold-400: #e2c078;
  --color-gold-300: #f0d89a;
  --color-gold-200: #fef3c7;

  /* Sacred Jewel Tones */
  --color-ruby: #be123c;
  --color-ruby-glow: rgba(190, 18, 60, 0.3);
  --color-sapphire: #1d4ed8;
  --color-sapphire-glow: rgba(29, 78, 216, 0.3);
  --color-emerald: #047857;
  --color-emerald-glow: rgba(4, 120, 87, 0.3);
  --color-amber: #d97706;
  --color-amber-glow: rgba(217, 119, 6, 0.3);
  --color-amethyst: #7c3aed;
  --color-amethyst-glow: rgba(124, 58, 237, 0.3);

  /* Parchment & Manuscript Tones */
  --color-parchment-100: #fefdfb;
  --color-parchment-200: #faf7f2;
  --color-parchment-300: #f5f0e8;
  --color-parchment-400: #e8e0d4;
  --color-parchment-500: #d4c9b8;

  /* Neutrals */
  --color-neutral-900: #111827;
  --color-neutral-800: #1f2937;
  --color-neutral-700: #374151;
  --color-neutral-600: #4b5563;
  --color-neutral-500: #6b7280;
  --color-neutral-400: #9ca3af;
  --color-neutral-300: #d1d5db;
  --color-neutral-200: #e5e7eb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-50: #f9fafb;

  /* Semantic Colors */
  --color-success: #059669;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-info: #0284c7;

  /* === Typography === */

  /* Font Families */
  --font-display: 'Cinzel', 'Playfair Display', Georgia, serif;
  --font-heading: 'Cormorant Garamond', 'Playfair Display', Georgia, serif;
  --font-body: 'Crimson Pro', 'EB Garamond', Georgia, serif;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes - Mobile First */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */
  --text-7xl: 4.5rem;      /* 72px */

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 1.75;

  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.15em;

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

  /* === Spacing === */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* === Layout === */
  --container-xs: 20rem;    /* 320px */
  --container-sm: 24rem;    /* 384px */
  --container-md: 28rem;    /* 448px */
  --container-lg: 32rem;    /* 512px */
  --container-xl: 36rem;    /* 576px */
  --container-2xl: 42rem;   /* 672px */
  --container-3xl: 48rem;   /* 768px */
  --container-4xl: 56rem;   /* 896px */
  --container-5xl: 64rem;   /* 1024px */
  --container-6xl: 72rem;   /* 1152px */
  --container-7xl: 80rem;   /* 1280px */
  --container-max: 90rem;   /* 1440px */

  /* === Borders === */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  --border-thin: 1px;
  --border-medium: 2px;
  --border-thick: 4px;

  /* === Shadows === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

  /* Sacred Glows */
  --glow-gold: 0 0 20px rgba(212, 168, 83, 0.4);
  --glow-gold-intense: 0 0 40px rgba(212, 168, 83, 0.6);
  --glow-divine: 0 0 60px rgba(255, 255, 255, 0.3);

  /* === Transitions === */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;

  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* === Z-Index Scale === */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* ============================================
   Dark Mode Variables
   ============================================ */

.dark,
[data-theme="dark"] {
  --color-bg-primary: var(--color-primary-900);
  --color-bg-secondary: var(--color-primary-800);
  --color-bg-tertiary: var(--color-primary-700);
  --color-text-primary: var(--color-parchment-100);
  --color-text-secondary: var(--color-parchment-300);
  --color-text-muted: var(--color-neutral-400);
  --color-border: var(--color-primary-700);
}

/* ============================================
   Base Reset & Defaults
   ============================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-neutral-800);
  background-color: var(--color-parchment-100);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--color-neutral-900);
}

.display {
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

h1, .h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
}

h2, .h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-5);
}

h3, .h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

h4, .h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

@media screen and (min-width: 768px) {
  h1, .h1 { font-size: var(--text-4xl); }
  h2, .h2 { font-size: var(--text-3xl); }
  h3, .h3 { font-size: var(--text-2xl); }
  h4, .h4 { font-size: var(--text-xl); }
}

@media screen and (min-width: 1024px) {
  h1, .h1 { font-size: var(--text-5xl); }
  h2, .h2 { font-size: var(--text-4xl); }
  h3, .h3 { font-size: var(--text-3xl); }
  h4, .h4 { font-size: var(--text-2xl); }
}

p {
  margin-bottom: var(--space-4);
  max-width: 65ch;
}

.lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-neutral-600);
}

@media screen and (min-width: 768px) {
  .lead { font-size: var(--text-xl); }
}

blockquote {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-style: italic;
  line-height: var(--leading-relaxed);
  padding-left: var(--space-6);
  border-left: var(--border-thick) solid var(--color-gold-500);
  color: var(--color-neutral-700);
  margin: var(--space-8) 0;
}

@media screen and (min-width: 768px) {
  blockquote { font-size: var(--text-2xl); }
}

.scripture {
  font-family: var(--font-heading);
  font-style: italic;
  color: var(--color-primary-700);
}

.scripture-ref {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-style: normal;
  font-weight: var(--font-medium);
  color: var(--color-gold-700);
  letter-spacing: var(--tracking-wide);
}

/* ============================================
   Links & Buttons
   ============================================ */

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

a:hover {
  color: var(--color-primary-500);
}

a:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

.link-gold:hover {
  color: var(--color-gold-400);
  text-shadow: var(--glow-gold);
}

/* Button Base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: 1;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-default);
  min-height: 44px;
  min-width: 44px;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Button Variants */
.btn-primary {
  background: linear-gradient(135deg, var(--color-gold-500), var(--color-gold-700));
  color: var(--color-primary-900);
  box-shadow: var(--shadow-md), var(--glow-gold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--glow-gold-intense);
}

.btn-secondary {
  background: transparent;
  color: var(--color-gold-500);
  border: var(--border-medium) solid var(--color-gold-500);
}

.btn-secondary:hover {
  background: var(--color-gold-500);
  color: var(--color-primary-900);
}

.btn-ghost {
  background: transparent;
  color: var(--color-neutral-700);
}

.btn-ghost:hover {
  background: var(--color-neutral-100);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  min-height: 36px;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  min-height: 52px;
}

/* ============================================
   Cards
   ============================================ */

.card {
  background: var(--color-parchment-100);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-default);
}

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

.card-body {
  padding: var(--space-6);
}

@media screen and (min-width: 768px) {
  .card-body { padding: var(--space-8); }
}

/* Sacred Card - Manuscript Style */
.card-sacred {
  background: linear-gradient(135deg, var(--color-parchment-200), var(--color-parchment-300));
  border: 1px solid var(--color-parchment-400);
  position: relative;
}

.card-sacred::before {
  content: '';
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  right: var(--space-3);
  bottom: var(--space-3);
  border: 1px solid var(--color-gold-400);
  border-radius: var(--radius-lg);
  pointer-events: none;
  opacity: 0.5;
}

/* Dark Card */
.card-dark {
  background: linear-gradient(135deg, var(--color-primary-800), var(--color-primary-900));
  color: var(--color-parchment-100);
}

.card-dark h1,
.card-dark h2,
.card-dark h3,
.card-dark h4 {
  color: var(--color-parchment-100);
}

/* Jewel Cards */
.card-ruby {
  background: linear-gradient(135deg, #1a0a10, #2d1018);
  border-top: 3px solid var(--color-ruby);
}

.card-sapphire {
  background: linear-gradient(135deg, #0a1020, #101830);
  border-top: 3px solid var(--color-sapphire);
}

.card-emerald {
  background: linear-gradient(135deg, #051510, #0a2018);
  border-top: 3px solid var(--color-emerald);
}

.card-amber {
  background: linear-gradient(135deg, #1a1005, #2d1a08);
  border-top: 3px solid var(--color-amber);
}

.card-amethyst {
  background: linear-gradient(135deg, #100a1a, #1a1030);
  border-top: 3px solid var(--color-amethyst);
}

/* ============================================
   Layout Components
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-7xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media screen and (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media screen and (min-width: 1024px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

.container-narrow {
  max-width: var(--container-4xl);
}

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

/* Grid */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }

@media screen and (min-width: 640px) {
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
}

@media screen and (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
}

@media screen and (min-width: 1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ============================================
   Section Styles
   ============================================ */

.section {
  padding: var(--space-12) 0;
}

@media screen and (min-width: 768px) {
  .section { padding: var(--space-16) 0; }
}

@media screen and (min-width: 1024px) {
  .section { padding: var(--space-20) 0; }
}

.section-dark {
  background: linear-gradient(180deg, var(--color-primary-900), var(--color-primary-800));
  color: var(--color-parchment-100);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-parchment-100);
}

.section-parchment {
  background: linear-gradient(180deg, var(--color-parchment-200), var(--color-parchment-300));
}

/* ============================================
   Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: rgba(12, 25, 41, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(212, 168, 83, 0.2);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 var(--space-4);
  max-width: var(--container-7xl);
  margin: 0 auto;
}

@media screen and (min-width: 768px) {
  .nav-container {
    height: 72px;
    padding: 0 var(--space-6);
  }
}

.nav-brand {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-gold-500);
  letter-spacing: var(--tracking-wide);
  text-decoration: none;
}

@media screen and (min-width: 768px) {
  .nav-brand { font-size: var(--text-xl); }
}

.nav-links {
  display: none;
  list-style: none;
  gap: var(--space-8);
}

@media screen and (min-width: 768px) {
  .nav-links { display: flex; }
}

.nav-link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-parchment-300);
  text-decoration: none;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  transition: color var(--duration-fast) var(--ease-default);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-gold-500);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

@media screen and (min-width: 768px) {
  .nav-toggle { display: none; }
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-gold-500);
  transition: all var(--duration-normal) var(--ease-default);
}

/* Mobile Menu */
.nav-mobile {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(12, 25, 41, 0.98);
  padding: var(--space-8);
  z-index: var(--z-overlay);
}

.nav-mobile.open {
  display: block;
}

.nav-mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  list-style: none;
}

.nav-mobile-link {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-parchment-100);
  text-decoration: none;
  letter-spacing: var(--tracking-wide);
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--color-primary-900);
  color: var(--color-parchment-300);
  padding: var(--space-12) 0 var(--space-8);
  border-top: 1px solid rgba(212, 168, 83, 0.2);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-gold-500);
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
}

.footer-text {
  font-size: var(--text-sm);
  color: var(--color-neutral-400);
  max-width: 40ch;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-parchment-300);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

.footer-link:hover {
  color: var(--color-gold-500);
}

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
}

/* ============================================
   Decorative Elements
   ============================================ */

/* Ornate Divider */
.divider-ornate {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-8) 0;
}

.divider-ornate::before,
.divider-ornate::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold-500), transparent);
}

.divider-ornate-icon {
  color: var(--color-gold-500);
  font-size: var(--text-xl);
}

/* Cross Symbol */
.cross-symbol::before {
  content: '✝';
}

/* Flourish */
.flourish {
  display: block;
  text-align: center;
  font-size: var(--text-2xl);
  color: var(--color-gold-500);
  opacity: 0.6;
  margin: var(--space-6) 0;
}

/* Gold Underline */
.underline-gold {
  position: relative;
  display: inline-block;
}

.underline-gold::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold-500), var(--color-gold-300));
}

/* ============================================
   Utility Classes
   ============================================ */

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Text Colors */
.text-gold { color: var(--color-gold-500); }
.text-muted { color: var(--color-neutral-500); }
.text-light { color: var(--color-parchment-100); }

/* Background */
.bg-dark { background-color: var(--color-primary-900); }
.bg-parchment { background-color: var(--color-parchment-200); }

/* Margins */
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Padding */
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }
.py-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

@media screen and (min-width: 768px) {
  .md\:block { display: block; }
  .md\:hidden { display: none; }
}

/* Visibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   Animations
   ============================================ */

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

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

@keyframes glow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

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

.animate-fade-in {
  animation: fadeIn var(--duration-slow) var(--ease-out);
}

.animate-fade-in-up {
  animation: fadeInUp var(--duration-slow) var(--ease-out);
}

.animate-glow {
  animation: glow 3s ease-in-out infinite;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

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

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .nav,
  .footer,
  .btn {
    display: none;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
    color: #000;
    background: #fff;
  }

  h1, h2, h3, h4 {
    page-break-after: avoid;
  }

  img {
    max-width: 100%;
  }
}