/* ==========================================================================
   EZ Nihongo — Component Primitives
   Reusable classes built on tokens. Import after tokens.css.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.ez-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 11px 20px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}
.ez-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.ez-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ez-btn-primary {
  background: var(--brand-red);
  color: #fff;
  box-shadow: var(--elev-1);
}
.ez-btn-primary:hover:not(:disabled) {
  background: var(--brand-red-hover);
  box-shadow: var(--elev-2);
  transform: translateY(-1px);
}
.ez-btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--elev-1);
}

.ez-btn-ghost {
  background: var(--surface-white);
  color: var(--ink-900);
  border-color: var(--paper-300);
}
.ez-btn-ghost:hover:not(:disabled) {
  background: var(--paper-100);
  border-color: var(--paper-400);
}

.ez-btn-quiet {
  background: transparent;
  color: var(--ink-700);
}
.ez-btn-quiet:hover:not(:disabled) {
  background: var(--paper-200);
  color: var(--ink-900);
}

.ez-btn-danger {
  background: var(--danger);
  color: #fff;
}
.ez-btn-danger:hover:not(:disabled) {
  background: #7f1616;
}

.ez-btn-danger-soft {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: #fecaca;
}
.ez-btn-danger-soft:hover:not(:disabled) {
  background: #fee2e2;
}

.ez-btn-lg {
  padding: 14px 26px;
  font-size: var(--text-base);
  border-radius: var(--radius-pill);
}
.ez-btn-sm {
  padding: 7px 12px;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.ez-card {
  background: var(--surface-white);
  border: 1px solid var(--paper-300);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--elev-1);
}
.ez-card-elevated {
  box-shadow: var(--elev-2);
}

/* --------------------------------------------------------------------------
   Badges
   -------------------------------------------------------------------------- */
.ez-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.ez-badge-success { background: var(--success-soft); color: var(--success); }
.ez-badge-warning { background: var(--warning-soft); color: var(--warning); }
.ez-badge-info    { background: var(--info-soft);    color: var(--info); }
.ez-badge-danger  { background: var(--danger-soft);  color: var(--danger); }
.ez-badge-purple  { background: var(--purple-soft);  color: var(--purple); }
.ez-badge-brand   { background: var(--brand-red-soft); color: var(--brand-red); }
.ez-badge-neutral { background: var(--paper-200);    color: var(--ink-700); }

.ez-badge-mono {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Inputs
   -------------------------------------------------------------------------- */
.ez-input,
.ez-textarea,
.ez-select {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--paper-300);
  border-radius: var(--radius-md);
  background: var(--surface-white);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--ink-900);
  line-height: 1.4;
  transition:
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}
.ez-input:focus,
.ez-textarea:focus,
.ez-select:focus {
  outline: none;
  border-color: var(--brand-red);
  box-shadow: var(--focus-ring);
}
.ez-input::placeholder,
.ez-textarea::placeholder {
  color: var(--ink-400);
}
.ez-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: var(--font-body);
}
.ez-input-error {
  border-color: var(--danger);
}
.ez-input-error:focus {
  box-shadow: 0 0 0 3px rgba(153, 27, 27, 0.2);
}

.ez-label {
  display: block;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-700);
  margin-bottom: 6px;
}

.ez-field {
  margin-bottom: var(--space-4);
}
.ez-field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-3);
}
.ez-field-error {
  color: var(--danger);
  font-size: var(--text-xs);
  margin-top: 4px;
  font-weight: 500;
}
.ez-field-hint {
  color: var(--ink-500);
  font-size: var(--text-xs);
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   Focus (universal)
   -------------------------------------------------------------------------- */
a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
summary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Progress bar
   -------------------------------------------------------------------------- */
.ez-progress {
  width: 100%;
  height: 6px;
  background: var(--paper-200);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.ez-progress-fill {
  height: 100%;
  background: var(--brand-red);
  border-radius: inherit;
  transition: width var(--duration-slow) var(--ease-standard);
}

/* --------------------------------------------------------------------------
   Divider
   -------------------------------------------------------------------------- */
.ez-divider {
  height: 1px;
  background: var(--paper-300);
  border: none;
  margin: var(--space-5) 0;
}

/* --------------------------------------------------------------------------
   Visually hidden (a11y)
   -------------------------------------------------------------------------- */
.ez-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   Global focus fallback — catches interactive elements that don't have
   a component-specific focus-visible rule. Uses :where() so specificity
   stays at 0 and per-component rules still win.
   -------------------------------------------------------------------------- */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Reduced motion — respect user preference across the whole system.
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}