/* =========================================
   Variables
   ========================================= */
:root {
  /* Colors */
  --color-background: #161618; /* Deep graphite */
  --color-surface: #1e1e21;
  --color-text: #e4e4e7;
  --color-text-muted: #a1a1aa;

  --color-primary: #d4af37; /* Golden accents */
  --color-primary-hover: #b5952f;
  --color-secondary: #4c1d95; /* Royal purple */

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  --color-gray-50: #fafafa;
  --color-gray-100: #f4f4f5;
  --color-gray-200: #e4e4e7;
  --color-gray-300: #d4d4d8;
  --color-gray-400: #a1a1aa;
  --color-gray-500: #71717a;
  --color-gray-600: #52525b;
  --color-gray-700: #3f3f46;
  --color-gray-800: #27272a;
  --color-gray-900: #18181b;

  /* Typography */
  --font-family-base: 'Montserrat', system-ui, -apple-system, sans-serif;
  --font-family-heading: 'Playfair Display', Georgia, serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --line-height-base: 1.6;
  --line-height-heading: 1.2;

  /* Spacing Scale (0-96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 1rem;     /* 16px */
  --space-4: 1.5rem;   /* 24px */
  --space-5: 2rem;     /* 32px */
  --space-6: 3rem;     /* 48px */
  --space-7: 4rem;     /* 64px */
  --space-8: 6rem;     /* 96px */

  /* Radius & Shadows */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.8);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

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

html {
  scroll-behavior: smooth;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* =========================================
   Base Styles
   ========================================= */
body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background-color: var(--color-background);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  line-height: var(--line-height-heading);
  font-weight: 400;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
  margin-bottom: var(--space-3);
}

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

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

/* =========================================
   Utilities
   ========================================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

.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;
}

/* =========================================
   Components
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-background);
  background-color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn:hover:not(:disabled) {
  background-color: transparent;
  color: var(--color-primary);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.input {
  width: 100%;
  padding: var(--space-3);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: transparent;
  border: 1px solid var(--color-gray-600);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.card {
  background-color: var(--color-surface);
  padding: var(--space-5);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  border-top: 2px solid var(--color-secondary);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

/* =========================================
   Accessibility
   ========================================= */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

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