/*
 * 222 Naturals — S52 Canonical Design System Foundation
 * Direction: Calm Commerce
 * Scope: tokens, typography, buttons, forms, surfaces, notices,
 * capability states, accessibility utilities.
 *
 * This layer intentionally does NOT redesign Header/Home/Product/Checkout/
 * Account/Partner/Seller layouts. Those are subsequent S52 tasks.
 */

:root {
  /* Foundation — neutral commerce surfaces */
  --n222-color-canvas: #f7f8f6;
  --n222-color-surface: #ffffff;
  --n222-color-surface-subtle: #f2f4f1;
  --n222-color-border: #d9ded8;
  --n222-color-border-strong: #b8c0b7;

  /* Foundation — text */
  --n222-color-text: #172019;
  --n222-color-text-muted: #5e6a61;
  --n222-color-text-subtle: #768078;
  --n222-color-on-brand: #ffffff;

  /* Brand — calm natural commerce, not “all green” */
  --n222-color-brand: #176b4a;
  --n222-color-brand-hover: #12573d;
  --n222-color-brand-soft: #eaf4ef;
  --n222-color-accent: #8a6325;
  --n222-color-accent-soft: #f6efe2;

  /* Semantic — deliberately separate from brand */
  --n222-color-success: #18794e;
  --n222-color-success-soft: #e9f6ef;
  --n222-color-warning: #8a5a00;
  --n222-color-warning-soft: #fff4d6;
  --n222-color-danger: #b42318;
  --n222-color-danger-soft: #fff0ee;
  --n222-color-info: #175cd3;
  --n222-color-info-soft: #eef4ff;

  /* Capability states */
  --n222-color-available: var(--n222-color-success);
  --n222-color-available-soft: var(--n222-color-success-soft);
  --n222-color-locked: #6b5a18;
  --n222-color-locked-soft: #f7f1d8;
  --n222-color-unavailable: #667085;
  --n222-color-unavailable-soft: #f2f4f7;

  /* Typography */
  --n222-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --n222-font-size-xs: 0.75rem;
  --n222-font-size-sm: 0.875rem;
  --n222-font-size-md: 1rem;
  --n222-font-size-lg: 1.125rem;
  --n222-font-size-xl: 1.375rem;
  --n222-font-size-2xl: 1.75rem;
  --n222-font-size-3xl: 2.25rem;
  --n222-line-tight: 1.2;
  --n222-line-normal: 1.5;
  --n222-weight-regular: 400;
  --n222-weight-medium: 500;
  --n222-weight-semibold: 600;
  --n222-weight-bold: 700;

  /* Spacing — 4px base */
  --n222-space-1: 0.25rem;
  --n222-space-2: 0.5rem;
  --n222-space-3: 0.75rem;
  --n222-space-4: 1rem;
  --n222-space-5: 1.25rem;
  --n222-space-6: 1.5rem;
  --n222-space-8: 2rem;
  --n222-space-10: 2.5rem;
  --n222-space-12: 3rem;

  /* Shape */
  --n222-radius-sm: 0.375rem;
  --n222-radius-md: 0.625rem;
  --n222-radius-lg: 0.875rem;
  --n222-radius-pill: 999px;

  /* Elevation */
  --n222-shadow-1: 0 1px 2px rgba(16, 24, 40, 0.06);
  --n222-shadow-2: 0 4px 12px rgba(16, 24, 40, 0.08);

  /* Interaction */
  --n222-focus-ring: 0 0 0 3px rgba(23, 107, 74, 0.22);
  --n222-control-min-height: 44px;
  --n222-transition-fast: 140ms ease;
}

/* Scoped foundation: no global body/theme takeover. */
.n222-ui,
.n222-ui input,
.n222-ui select,
.n222-ui textarea,
.n222-ui button {
  font-family: var(--n222-font-sans);
}

.n222-ui {
  color: var(--n222-color-text);
  line-height: var(--n222-line-normal);
}

/* Typography */
.n222-heading {
  margin: 0 0 var(--n222-space-4);
  color: var(--n222-color-text);
  font-weight: var(--n222-weight-bold);
  line-height: var(--n222-line-tight);
}

.n222-heading--1 { font-size: clamp(1.75rem, 4vw, var(--n222-font-size-3xl)); }
.n222-heading--2 { font-size: clamp(1.375rem, 3vw, var(--n222-font-size-2xl)); }
.n222-heading--3 { font-size: var(--n222-font-size-xl); }

.n222-text-muted { color: var(--n222-color-text-muted); }
.n222-text-small { font-size: var(--n222-font-size-sm); }
.n222-price {
  color: var(--n222-color-text);
  font-size: var(--n222-font-size-xl);
  font-weight: var(--n222-weight-bold);
  font-variant-numeric: tabular-nums;
}

/* Surfaces / cards */
.n222-surface,
.n222-card {
  background: var(--n222-color-surface);
  border: 1px solid var(--n222-color-border);
  border-radius: var(--n222-radius-lg);
  box-shadow: var(--n222-shadow-1);
}

.n222-card { padding: var(--n222-space-5); }

/* Buttons */
.n222-btn {
  min-height: var(--n222-control-min-height);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--n222-space-2);
  padding: 0.625rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--n222-radius-md);
  font: inherit;
  font-weight: var(--n222-weight-semibold);
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--n222-transition-fast),
    border-color var(--n222-transition-fast),
    color var(--n222-transition-fast),
    box-shadow var(--n222-transition-fast);
}

.n222-btn--primary {
  background: var(--n222-color-brand);
  border-color: var(--n222-color-brand);
  color: var(--n222-color-on-brand);
}
.n222-btn--primary:hover { background: var(--n222-color-brand-hover); border-color: var(--n222-color-brand-hover); color: var(--n222-color-on-brand); }

.n222-btn--secondary {
  background: var(--n222-color-surface);
  border-color: var(--n222-color-border-strong);
  color: var(--n222-color-text);
}
.n222-btn--secondary:hover { background: var(--n222-color-surface-subtle); color: var(--n222-color-text); }

.n222-btn--tertiary {
  background: transparent;
  border-color: transparent;
  color: var(--n222-color-brand);
}
.n222-btn--tertiary:hover { background: var(--n222-color-brand-soft); color: var(--n222-color-brand-hover); }

.n222-btn--danger {
  background: var(--n222-color-danger);
  border-color: var(--n222-color-danger);
  color: #fff;
}

.n222-btn[disabled],
.n222-btn[aria-disabled="true"] {
  background: var(--n222-color-unavailable-soft);
  border-color: var(--n222-color-border);
  color: var(--n222-color-unavailable);
  cursor: not-allowed;
  opacity: 1;
}

/* Forms */
.n222-field { margin-bottom: var(--n222-space-5); }
.n222-label {
  display: inline-block;
  margin-bottom: var(--n222-space-2);
  color: var(--n222-color-text);
  font-size: var(--n222-font-size-sm);
  font-weight: var(--n222-weight-semibold);
}
.n222-input,
.n222-select,
.n222-textarea {
  width: 100%;
  min-height: var(--n222-control-min-height);
  padding: 0.625rem 0.75rem;
  background: var(--n222-color-surface);
  border: 1px solid var(--n222-color-border-strong);
  border-radius: var(--n222-radius-md);
  color: var(--n222-color-text);
  font: inherit;
}
.n222-textarea { min-height: 7rem; resize: vertical; }
.n222-help {
  margin-top: var(--n222-space-2);
  color: var(--n222-color-text-muted);
  font-size: var(--n222-font-size-sm);
}
.n222-error-text {
  margin-top: var(--n222-space-2);
  color: var(--n222-color-danger);
  font-size: var(--n222-font-size-sm);
}

/* Notices */
.n222-notice {
  padding: var(--n222-space-4);
  border: 1px solid var(--n222-color-border);
  border-left-width: 4px;
  border-radius: var(--n222-radius-md);
  background: var(--n222-color-surface);
}
.n222-notice--success { border-left-color: var(--n222-color-success); background: var(--n222-color-success-soft); }
.n222-notice--warning { border-left-color: var(--n222-color-warning); background: var(--n222-color-warning-soft); }
.n222-notice--danger  { border-left-color: var(--n222-color-danger); background: var(--n222-color-danger-soft); }
.n222-notice--info    { border-left-color: var(--n222-color-info); background: var(--n222-color-info-soft); }

/* Capability presentation. These classes never grant authorization. */
.n222-capability {
  display: flex;
  align-items: flex-start;
  gap: var(--n222-space-3);
  padding: var(--n222-space-4);
  border: 1px solid var(--n222-color-border);
  border-radius: var(--n222-radius-md);
}
.n222-capability--available { background: var(--n222-color-available-soft); border-color: var(--n222-color-available); }
.n222-capability--locked { background: var(--n222-color-locked-soft); border-color: var(--n222-color-locked); }
.n222-capability--unavailable { background: var(--n222-color-unavailable-soft); border-color: var(--n222-color-unavailable); }

/* NOT_APPLICABLE is intentionally not a visual component:
 * canonical rendering owner should omit it from actionable UI.
 */

/* Accessible focus */
.n222-ui :where(a, button, input, select, textarea, [tabindex]):focus-visible,
.n222-btn:focus-visible,
.n222-input:focus-visible,
.n222-select:focus-visible,
.n222-textarea:focus-visible {
  outline: 2px solid var(--n222-color-brand);
  outline-offset: 2px;
  box-shadow: var(--n222-focus-ring);
}

/* Screen-reader utility */
.n222-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;
}

/* Semantic hidden is only for content already decided NOT_APPLICABLE by canonical logic. */
.n222-is-hidden { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  .n222-ui *,
  .n222-ui *::before,
  .n222-ui *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 430px) {
  .n222-card { padding: var(--n222-space-4); }
  .n222-btn { min-height: 44px; }
}