/* ==========================================================================
   OJ || studios — shared design tokens & base primitives
   Loaded first on every page. Presentation only — no page-specific rules,
   no ids/classes that any JS depends on are defined or altered here.
   ========================================================================== */

:root {
  /* --- brand & ink --- */
  --color-ink-900: #1e1e1e;
  --color-ink-800: #232321;
  --color-ink-700: #252523;
  --color-ink-600: #3b3b38;
  --color-gold: #c9a46c;
  --color-gold-dark: #a9824f;
  --color-gold-soft: #e6d3ae;

  /* --- neutrals (light -> dark) --- */
  --color-white: #ffffff;
  --color-white-warm: #fafaf8;
  --color-off-white: #f9f9f6;
  --color-gray-50: #efefe9;
  --color-gray-100: #eaeae4;
  --color-gray-150: #e2e2db;
  --color-gray-200: #d4d4ce;
  --color-gray-300: #b5b5ad;
  --color-gray-400: #8a8a84;
  --color-gray-500: #6f6f69;
  --color-gray-600: #4f4f4b;

  /* --- semantic --- */
  --color-success: #2e7d32;
  --color-success-bg: #e8f5e9;
  --color-error: #c62828;
  --color-error-bg: #ffebee;
  --color-warning: #f57c00;
  --color-warning-bg: #fff3e0;

  /* --- surfaces / text (semantic aliases, prefer these in new rules) --- */
  --surface-page: var(--color-white-warm);
  --surface-card: var(--color-white);
  --surface-sunken: var(--color-off-white);
  --surface-dark: var(--color-ink-800);
  --text-primary: var(--color-ink-800);
  --text-secondary: var(--color-gray-500);
  --text-muted: var(--color-gray-400);
  --text-on-dark: var(--color-white-warm);
  --border-subtle: var(--color-gray-150);
  --border-default: var(--color-gray-200);

  /* --- typography --- */
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, sans-serif;
  --font-mono: "Inter", ui-monospace, monospace;

  /* --- spacing scale --- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* --- radius / shadow --- */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(30, 30, 30, 0.06), 0 1px 1px rgba(30, 30, 30, 0.04);
  --shadow-md: 0 4px 16px rgba(30, 30, 30, 0.08), 0 2px 6px rgba(30, 30, 30, 0.05);
  --shadow-lg: 0 16px 40px rgba(30, 30, 30, 0.14), 0 4px 12px rgba(30, 30, 30, 0.06);
  --shadow-gold: 0 8px 24px rgba(201, 164, 108, 0.25);

  /* --- motion --- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 250ms var(--ease-out);
  --transition-slow: 420ms var(--ease-out);

  /* --- layout --- */
  --breakpoint-lg: 1024px;
  --breakpoint-md: 768px;
  --breakpoint-sm: 480px;
  --focus-ring: 0 0 0 3px rgba(201, 164, 108, 0.45);
}

/* --- base reset (safe, non-invasive) --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* consistent, visible keyboard focus everywhere, mouse users unaffected */
:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
  box-shadow: var(--focus-ring);
}

::selection {
  background: var(--color-gold);
  color: var(--color-ink-800);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--surface-sunken);
}
::-webkit-scrollbar-thumb {
  background: var(--color-gray-300);
  border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-gold);
}

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

/* --- shared primitives (opt-in utility classes, nothing here is required
   by any existing JS hook) --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    background-color var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast);
  text-decoration: none;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: var(--color-ink-800);
  color: var(--text-on-dark);
}
.btn-primary:hover {
  background: var(--color-gold);
  color: var(--color-ink-800);
  box-shadow: var(--shadow-gold);
}
.btn-gold {
  background: var(--color-gold);
  color: var(--color-ink-800);
}
.btn-gold:hover {
  background: var(--color-gold-dark);
  box-shadow: var(--shadow-gold);
}
.btn-secondary {
  background: transparent;
  color: var(--color-ink-800);
  border-color: var(--border-default);
}
.btn-secondary:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-dark);
}

.card {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  background: var(--surface-sunken);
  color: var(--text-secondary);
}

/* ==========================================================================
   Shared components added during the accessibility / UX pass.
   Kept here (not style.css) so every page picks them up.
   ========================================================================== */

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

/* --- skip link ---------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 999;
  padding: var(--space-3) var(--space-4);
  background: var(--surface-dark);
  color: var(--text-on-dark);
  text-decoration: none;
  border-radius: var(--radius-sm, 4px);
  transition: top var(--transition-base, 0.2s ease);
}
.skip-link:focus {
  top: var(--space-4);
}

/* --- visible focus for keyboard users ----------------------------------- */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
  border-radius: 2px;
}

/* --- toasts (replaces alert()) ------------------------------------------ */
.oj-toast-host {
  position: fixed;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  pointer-events: none;
  width: min(92vw, 26rem);
}
.oj-toast {
  pointer-events: auto;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--surface-dark);
  color: var(--text-on-dark);
  font-size: 0.9rem;
  border-radius: var(--radius-md, 8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  border-left: 3px solid var(--color-gold);
  animation: oj-toast-in 0.25s ease;
}
.oj-toast--success {
  border-left-color: var(--color-success);
}
.oj-toast--error {
  border-left-color: var(--color-error);
}
.oj-toast--leaving {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
@keyframes oj-toast-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- loading skeletons -------------------------------------------------- */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-100) 25%,
    var(--color-gray-50) 37%,
    var(--color-gray-100) 63%
  );
  background-size: 400% 100%;
  animation: oj-shimmer 1.4s ease infinite;
  border-radius: var(--radius-sm, 4px);
}
.skeleton-card {
  pointer-events: none;
}
.skeleton-img {
  width: 100%;
  aspect-ratio: 4 / 5;
  margin-bottom: var(--space-3);
}
.skeleton-line {
  height: 0.75rem;
  margin-bottom: var(--space-2);
}
.skeleton-line.short {
  width: 45%;
}
@keyframes oj-shimmer {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0 50%;
  }
}

/* --- load / empty states ------------------------------------------------ */
.load-error,
.cart-empty,
.cart-error {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-6, 2rem) var(--space-4);
  background: var(--surface-sunken);
  color: var(--text-secondary);
}
.load-error-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: var(--space-2);
}
.load-error .btn,
.cart-empty .btn,
.cart-error .btn {
  margin-top: var(--space-4);
}

/* --- form hint ---------------------------------------------------------- */
.input-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: var(--space-2);
}
[aria-invalid="true"] {
  border-color: var(--color-error) !important;
}

/* --- honour reduced-motion for the new animations ----------------------- */
@media (prefers-reduced-motion: reduce) {
  .skeleton,
  .oj-toast {
    animation: none;
  }
}