/* Uideo Design Tokens
   Single Swiss style, defined as CSS custom properties on :root
   ---------------------------------------------------- */

@layer base {
  /* Swiss: Bauhaus-inspired, bold, geometric */
  :root {
    /* Backgrounds - pure white */
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F8F8F8;
    --color-bg-tertiary: #F0F0F0;
    --color-bg-elevated: #FFFFFF;

    /* Text - pure black */
    --color-text: #000000;
    --color-text-secondary: #333333;
    --color-text-muted: #666666;
    --color-text-inverse: #FFFFFF;

    /* Accent - Swiss red */
    --color-accent: #FF0000;
    --color-accent-hover: #CC0000;
    --color-accent-light: #FFEBEB;

    /* Semantic */
    --color-success: #00AA00;
    --color-error: #FF0000;
    --color-warning: #FFAA00;

    /* Borders - bold */
    --color-border: #000000;
    --color-border-subtle: #E0E0E0;

    /* Inverse surface - footer */
    --color-bg-inverse: #000000;
    --color-text-inverse-secondary: #A3A3A3;
    --color-border-inverse-subtle: #2E2E2E;

    /* Typography - extreme contrast */
    --font-heading: 'Space Grotesk', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-body: 'Space Grotesk', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-weight-heading: 700;
    --font-weight-body: 300;
    --line-height-tight: 1.1;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.6;
    --letter-spacing-heading: -0.04em;

    /* Shapes - sharp corners */
    --radius-sm: 0;
    --radius-md: 0;
    --radius-lg: 0;
    --radius-xl: 0;
    --radius-full: 9999px;

    /* Shadows - none, use borders */
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --shadow-xl: none;

    /* Effects */
    --transition-fast: 100ms linear;
    --transition-base: 150ms linear;
    --transition-slow: 200ms linear;

    /* Components */
    --card-border: 2px solid var(--color-border);
    --heading-transform: uppercase;
  }
}

/* ==========================================
   UTILITY CLASSES
   Token-based component classes
   ========================================== */
@layer components {
  /* Cards */
  .card-theme {
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: var(--card-border);
  }

  .card-theme-elevated {
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: var(--card-border);
  }

  /* Buttons */
  .btn-theme-primary {
    background-color: var(--color-accent);
    color: var(--color-text-inverse);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: background-color var(--transition-fast);
  }

  .btn-theme-primary:hover {
    background-color: var(--color-accent-hover);
  }

  .btn-theme-secondary {
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    font-weight: 500;
    transition: all var(--transition-fast);
  }

  .btn-theme-secondary:hover {
    background-color: var(--color-bg-tertiary);
  }

  .btn-theme-ghost {
    background-color: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
  }

  .btn-theme-ghost:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
  }

  /* Typography */
  .heading-theme {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-heading);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-heading);
    color: var(--color-text);
    text-transform: var(--heading-transform);
  }

  .body-theme {
    font-family: var(--font-body);
    font-weight: var(--font-weight-body);
    line-height: var(--line-height-normal);
    color: var(--color-text);
  }

  /* Links */
  .link-theme {
    color: var(--color-accent);
    transition: color var(--transition-fast);
  }

  .link-theme:hover {
    color: var(--color-accent-hover);
  }

  /* Inputs */
  .input-theme {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition-fast);
  }

  .input-theme:focus {
    border-color: var(--color-accent);
    outline: none;
    box-shadow: 0 0 0 3px var(--color-accent-light);
  }

  .input-theme::placeholder {
    color: var(--color-text-muted);
  }

  /* Badges */
  .badge-theme {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
  }

  .badge-theme-accent {
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
  }

  /* Dividers */
  .divider-theme {
    border-color: var(--color-border);
  }

  /* Progress disclosure - hidden by default, visible on hover */
  .disclosure-hidden {
    opacity: 0;
    transform: translateY(4px);
    transition: all var(--transition-base);
  }

  .group:hover .disclosure-hidden {
    opacity: 1;
    transform: translateY(0);
  }

  /* Kaminari Pagination Styling - Swiss */
  nav.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
  }

  nav.pagination a,
  nav.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 3rem;
    height: 3rem;
    padding: 0 1rem;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border: 1px solid var(--color-border);
    margin-left: -1px;
    transition: all var(--transition-fast);
  }

  nav.pagination a {
    color: var(--color-text-secondary);
    background-color: var(--color-bg);
  }

  nav.pagination a:hover {
    color: var(--color-text);
    background-color: var(--color-bg-secondary);
    position: relative;
    z-index: 1;
  }

  nav.pagination span.current {
    color: var(--color-text-inverse);
    background-color: var(--color-text);
    border-color: var(--color-text);
    position: relative;
    z-index: 1;
  }

  nav.pagination span.gap {
    color: var(--color-text-muted);
    background-color: transparent;
    min-width: auto;
    border: none;
  }

  nav.pagination .first a,
  nav.pagination .prev a,
  nav.pagination .next a,
  nav.pagination .last a {
    background-color: var(--color-bg);
    text-transform: uppercase;
    font-size: 0.625rem;
    letter-spacing: 0.1em;
  }

  nav.pagination .disabled {
    opacity: 0.3;
    cursor: not-allowed;
  }

  /* Hero Typography */
  .hero-headline {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-heading);
    letter-spacing: var(--letter-spacing-heading);
    line-height: 0.95;
  }

  /* Line clamp utilities */
  .line-clamp-1 {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* Smooth hover lift */
  .hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

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

  /* Focus ring */
  .focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-accent-light);
  }

  /* Animated underline */
  .animated-underline {
    position: relative;
  }

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

  .animated-underline:hover::after {
    width: 100%;
  }

  /* Video Grid - Swiss style with subtle dividers */
  .video-grid {
    position: relative;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
  }

  .video-grid-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  }

  /* Tablet: 2 columns - vertical border on 2nd column */
  @media (min-width: 768px) and (max-width: 1023px) {
    .video-grid-item:nth-child(2n) {
      border-left: 1px solid rgba(0, 0, 0, 0.06);
    }
  }

  /* Desktop: 3 columns - vertical borders on 2nd and 3rd columns */
  @media (min-width: 1024px) {
    .video-grid-item:nth-child(3n+2),
    .video-grid-item:nth-child(3n) {
      border-left: 1px solid rgba(0, 0, 0, 0.06);
    }
  }
}