/* ==========================================================================
   COMPONENTS.CSS — MRC Card Shop
   Reusable UI components: buttons, forms, cards, badges, spinner, toasts
   Depends on: base.css (all values via CSS custom properties)
   ========================================================================== */


/* ==========================================================================
   1. BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--min-touch-target);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    opacity var(--transition-fast);
  user-select: none;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Primary — solid green */
.btn--primary {
  background: var(--gradient-brand);
  border-color: transparent;
  color: #0A0A0F;
}

.btn--primary:hover {
  filter: brightness(1.08);
  border-color: transparent;
  color: #0A0A0F;
}

/* Secondary — outlined */
.btn--secondary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* Danger — red */
.btn--danger {
  background-color: var(--color-error);
  border-color: var(--color-error);
  color: var(--color-bg);
}

.btn--danger:hover {
  background-color: #b71c1c;
  border-color: #b71c1c;
  color: var(--color-bg);
}

/* Ghost — no border, subtle hover */
.btn--ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--color-primary);
  font-weight: 700;
}

.btn--ghost:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* Disabled state — applies to all variants */
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Size modifier — full width */
.btn--full {
  width: 100%;
}

/* Size modifier — small (still meets touch target on mobile via padding) */
.btn--sm {
  min-height: 36px;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}


/* ==========================================================================
   2. FORM ELEMENTS
   ========================================================================== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
}

.form-label--required::after {
  content: " *";
  color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  min-height: var(--min-touch-target);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  line-height: var(--line-height-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.30);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

/* Textarea */
.form-textarea {
  min-height: 100px;
  resize: vertical;
}

/* Select — custom chevron */
.form-select {
  padding-right: var(--space-10);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  cursor: pointer;
}

/* Error state */
.form-input--error,
.form-textarea--error,
.form-select--error {
  border-color: var(--color-error);
}

.form-input--error:focus,
.form-textarea--error:focus,
.form-select--error:focus {
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.30);
}

.form-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-error);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* Number input — remove browser spinners */
.form-input[type="number"] {
  -moz-appearance: textfield;
}

.form-input[type="number"]::-webkit-inner-spin-button,
.form-input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
}


/* ==========================================================================
   3. CARDS
   ========================================================================== */

.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.card--flat {
  box-shadow: none;
}

.card--highlighted {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.card__header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
}

.card__body + .card__footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}


/* ==========================================================================
   4. BADGES & PILLS
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 700;
  line-height: 1.4;
  white-space: nowrap;
}

/* Rank badges */
.badge--rank-1,
.badge--gold {
  background-color: var(--color-gold);
  color: var(--color-bg);
}

.badge--rank-2,
.badge--silver {
  background-color: var(--color-silver);
  color: var(--color-bg);
}

.badge--rank-3,
.badge--bronze {
  background-color: var(--color-bronze);
  color: var(--color-bg);
}

/* Generic rank (4th place and beyond) */
.badge--rank {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
}

/* Status badges */
.badge--pending {
  background-color: #3A2A12;
  color: #FBBF24;
}

.badge--verified {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.badge--active {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.badge--closed {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
}

.badge--error {
  background-color: #3A1A1A;
  color: var(--color-error);
}

/* Points display pill */
.badge--points {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.badge--points-lg {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--font-size-xl);
  font-weight: 700;
  padding: var(--space-2) var(--space-5);
}


/* ==========================================================================
   5. LOADING SPINNER
   ========================================================================== */

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

.spinner--sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner--lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

/* Full-page loading overlay */
.spinner-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

/* Inline loading state within a container */
.loading-block {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-8);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}


/* ==========================================================================
   6. TOAST NOTIFICATIONS
   ========================================================================== */

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(var(--space-4));
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toast-out {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(var(--space-4));
  }
}

/* Container anchored to bottom of viewport */
.toast-region {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  z-index: 300;
  width: min(calc(100vw - var(--space-8)), 480px);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  box-shadow: var(--shadow-md);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
  pointer-events: all;
  animation: toast-in var(--transition-normal) ease both;
}

.toast.is-hiding {
  animation: toast-out var(--transition-normal) ease both;
}

.toast--success {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.toast--error {
  background-color: #3A1A1A;
  border-color: var(--color-error);
  color: var(--color-error);
}

.toast__icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
}

.toast__message {
  flex: 1;
  font-weight: 700;
}

.toast__sub {
  display: block;
  font-weight: 400;
  margin-top: var(--space-1);
  opacity: 0.85;
}

.toast__close {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  color: inherit;
  opacity: 0.6;
  cursor: pointer;
  transition: opacity var(--transition-fast);
  background: none;
  border: none;
  padding: 0;
}

.toast__close:hover {
  opacity: 1;
}