/* ============================================================
   Suconbao Wellness - Component Library
   Built on tokens.css. Loaded AFTER style.css.
   Additive: new class names (.btn--*, .field, .input, .card,
   .badge--) coexist with the legacy .btn-primary / .form-group.
   ============================================================ */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-full);
  font: 500 0.9rem/1 var(--font-sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  transition: var(--transition-fast);
  white-space: nowrap;
}
.btn--primary { background: var(--color-primary-500); color: #fff; border-color: var(--color-primary-500); }
.btn--primary:hover { background: var(--color-primary-600); border-color: var(--color-primary-600); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--accent { background: var(--color-accent-500); color: var(--color-ink-900); border-color: var(--color-accent-500); }
.btn--accent:hover { background: var(--color-accent-600); border-color: var(--color-accent-600); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--secondary { background: transparent; color: var(--color-primary-700); border-color: var(--color-primary-300); }
.btn--secondary:hover { background: var(--color-primary-50); border-color: var(--color-primary-500); }
.btn--ghost { background: transparent; color: var(--color-primary-700); border-color: transparent; }
.btn--ghost:hover { background: var(--color-primary-50); }
.btn--sm { min-height: 36px; padding: 0 18px; font-size: 0.8rem; }
.btn--lg { min-height: 52px; padding: 0 36px; font-size: 1rem; }
.btn--block { width: 100%; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; pointer-events: none; transform: none; box-shadow: none; }
.btn:focus-visible { outline: 2px solid var(--color-primary-700); outline-offset: 2px; }

/* ---------- Forms ---------- */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: var(--space-4); }
.field > label { font: 500 0.8rem/1.3 var(--font-sans); letter-spacing: 0.03em; text-transform: uppercase; color: var(--color-ink-900); }
.input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--color-stone-300);
  border-radius: var(--radius-sm);
  font: 400 1rem var(--font-sans);
  color: var(--color-ink-700);
  background: var(--color-white);
  transition: var(--transition-fast);
}
.input::placeholder { color: var(--color-stone-500); }
.input:focus { outline: none; border-color: var(--color-primary-500); box-shadow: 0 0 0 3px rgb(14 23 38 / 0.12); }
.input[aria-invalid="true"] { border-color: var(--color-error); box-shadow: 0 0 0 3px rgb(192 57 43 / 0.12); }
textarea.input { height: auto; padding: 12px 14px; min-height: 120px; resize: vertical; }
select.input { cursor: pointer; }
.field__error { font: 400 0.75rem var(--font-sans); color: var(--color-error); }
.field__hint { font: 400 0.75rem var(--font-sans); color: var(--color-stone-500); }

/* ---------- Card ---------- */
.card { background: var(--color-white); border: 1px solid var(--color-stone-300); border-radius: var(--radius-lg); overflow: hidden; transition: var(--transition-normal); }
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* ---------- Badge ---------- */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px; border-radius: var(--radius-full); font: 600 0.7rem/1 var(--font-sans); letter-spacing: 0.04em; text-transform: uppercase; }
.badge--sale { background: var(--color-accent-500); color: var(--color-ink-900); }
.badge--new { background: var(--color-primary-500); color: #fff; }
.badge--out { background: var(--color-stone-300); color: var(--color-ink-700); }
.badge--success { background: rgb(46 125 79 / 0.12); color: var(--color-success); }
.badge--warning { background: rgb(185 118 26 / 0.14); color: var(--color-warning); }
.badge--error { background: rgb(192 57 43 / 0.12); color: var(--color-error); }

/* ---------- Accessibility: global focus + skip link + reduced motion ---------- */
:focus-visible { outline: 2px solid var(--color-primary-500); outline-offset: 2px; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 3000;
  background: var(--color-primary-500);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font: 600 0.85rem var(--font-sans);
  text-decoration: none;
}
.skip-link:focus { left: 8px; top: 8px; }

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