/* assets/css/primitives.css */

@layer primitives {
  /* ==========================================================================
     1. Animations & Keyframes
     ========================================================================== */
  @keyframes fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
  }

  @keyframes rise-in {
    from { opacity: 0; transform: translateY(1.5rem); }
    to   { opacity: 1; transform: translateY(0); }
  }

  @keyframes pulse-slow {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50%      { opacity: 0.6; transform: scale(1.03); }
  }

  .animate-fade-in {
    animation: fade-in 0.3s ease-in-out forwards;
  }

  .animate-fade-up,
  .animate-reveal {
    animation: rise-in 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

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

  /* ==========================================================================
     2. Glassmorphism System
     ========================================================================== */
  .glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur, 12px));
    -webkit-backdrop-filter: blur(var(--glass-blur, 12px));
    border: 1px solid var(--glass-border, rgb(255 255 255 / 0.1));
    box-shadow: var(--shadow-md);
    transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
  }

  .glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur, 16px));
    -webkit-backdrop-filter: blur(var(--glass-blur, 16px));
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-2xl);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s;
  }

  .glass--heavy {
    --glass-blur: 24px;
    --glass-bg: color-mix(in srgb, var(--color-bg-surface) 90%, transparent);
  }

  .glass--subtle {
    --glass-blur: 8px;
    --glass-bg: color-mix(in srgb, var(--color-bg-surface) 50%, transparent);
  }

  /* ==========================================================================
     3. Modals & Overlays
     ========================================================================== */
  .modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--color-text-main) 40%, transparent);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .modal-overlay.is-open,
  .modal-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
  }

  .modal-card {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    max-width: 90vw;
    width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    transform: translateY(1.5rem);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .modal-overlay.is-open .modal-card,
  .modal-overlay:not(.hidden) .modal-card {
    transform: translateY(0);
  }

  /* ==========================================================================
     4. Custom Scrollbars
     ========================================================================== */
  ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }

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

  ::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--color-text-muted) 30%, transparent);
    border-radius: var(--radius-full);
  }

  ::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--color-text-muted) 50%, transparent);
  }

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

  .sr-only-focusable:focus,
  .sr-only-focusable:active {
    position: static !important;
    width: auto !important;
    height: auto !important;
    margin: 0 !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: normal !important;
  }

  .skip-link {
    position: fixed;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: var(--color-text-inverse) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    font-weight: 700;
    text-decoration: none;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    transition: top 0.2s ease-in-out;
  }

  .skip-link:focus {
    top: 0;
    outline: none;
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto !important;
    }
    
    *, *::before, *::after {
      animation-delay: -1ms !important;
      animation-duration: 1ms !important;
      animation-iteration-count: 1 !important;
      background-attachment: initial !important;
      scroll-behavior: auto !important;
      transition-duration: 0s !important;
      transition-delay: 0s !important;
    }
  }
}