/* =============================================================================
   UI CORE
   Base styles, resets, and utility layer built on design tokens
   ============================================================================= */

/* Base Resets */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  padding: 0;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: var(--transition-colors);
}

/* Typography Scale */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }

.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }
.font-extrabold { font-weight: var(--font-weight-extrabold); }

.leading-tight { line-height: var(--line-height-tight); }
.leading-normal { line-height: var(--line-height-normal); }
.leading-relaxed { line-height: var(--line-height-relaxed); }

/* Surface & Panel Helpers */
.surface {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: var(--transition-colors);
}

.surface-hover:hover {
  background-color: var(--color-surface-hover);
}

.panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-colors);
}

.panel-hover:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Legacy form helpers (refactor in progress) */
.small {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.label-text {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.schedule-slot {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface);
  padding: var(--space-2);
  cursor: pointer;
  transition: var(--transition-transform), var(--transition-colors), box-shadow var(--transition-fast);
}

.schedule-slot:not(:disabled):hover {
  border-color: var(--color-primary-500);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.schedule-slot.selected {
  background-color: var(--color-primary-600);
  border-color: var(--color-primary-700);
  color: var(--color-neutral-0);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.schedule-slot.selected .slots-info {
  color: color-mix(in srgb, var(--color-neutral-0) 80%, transparent);
}

.schedule-slot:disabled {
  background-color: var(--color-neutral-100);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.schedule-slot.weekend {
  border-style: dashed;
}

.schedule-slot .time {
  font-weight: var(--font-weight-semibold);
}

.schedule-slot .slots-info {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.grid-slots {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: var(--space-2);
}

.day-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.375rem 0.625rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-neutral-100);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-transform), var(--transition-colors);
}

.day-chip:hover {
  background-color: var(--color-neutral-200);
}

.day-chip.selected {
  background-color: var(--color-primary-100);
  border-color: var(--color-primary-400);
  color: var(--color-primary-700);
  font-weight: var(--font-weight-semibold);
  transform: translateY(-1px);
}

/* Pickup day chips - para configuração de coleta */
.pickup-day-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-neutral-100);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-transform), var(--transition-colors);
}

.pickup-day-chip:hover {
  background-color: #f3e8ff;
  border-color: #c084fc;
}

.pickup-day-chip.selected {
  background-color: #ede9fe;
  border-color: #8b5cf6;
  color: #6d28d9;
  font-weight: var(--font-weight-semibold);
  transform: translateY(-1px);
}

/* Delivery mode option hover states */
.delivery-mode-option input:checked + div {
  font-weight: var(--font-weight-medium);
}

.file-upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  cursor: pointer;
  background-color: var(--color-surface);
  transition: var(--transition-colors), var(--transition-transform);
}

.file-upload-zone:hover,
.file-upload-zone.drag-hover {
  border-color: var(--color-primary-500);
  background-color: var(--color-primary-50);
}

.file-upload-zone svg {
  display: block;
  margin: 0 auto var(--space-2);
  color: var(--color-text-muted);
}

.img-preview-container {
  position: relative;
  width: 6rem;
  margin: var(--space-2);
}

.img-preview {
  width: 100%;
  height: 5rem;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background-color: var(--color-neutral-100);
}

.img-remove-btn {
  position: absolute;
  top: -0.375rem;
  right: -0.375rem;
  width: 1.5rem;
  height: 1.5rem;
  background-color: rgba(15, 23, 42, 0.75);
  color: var(--color-neutral-0);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-neutral-0);
  cursor: pointer;
  transition: var(--transition-colors), var(--transition-transform);
}

.img-remove-btn:hover {
  background-color: rgba(220, 38, 38, 0.85);
  transform: scale(1.05);
}

#campaign-map {
  height: 20rem;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

/* Spacing Utilities Subset */
.p-0 { padding: var(--space-0); }
.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.m-0 { margin: var(--space-0); }
.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-3 { margin: var(--space-3); }
.m-4 { margin: var(--space-4); }
.m-6 { margin: var(--space-6); }
.m-8 { margin: var(--space-8); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Toast Baseline Styling */
.toast-container {
  position: fixed;
  z-index: var(--z-toast);
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(var(--space-4) + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: min(90%, 400px);
  pointer-events: none;
}

.toast {
  background-color: var(--color-neutral-800);
  color: var(--color-neutral-0);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  box-shadow: var(--shadow-lg);
  animation: fadeToast var(--transition-base) ease;
  pointer-events: auto;
  min-height: 3rem;
}

.toast.success {
  background-color: var(--color-success-700);
  color: var(--color-neutral-0);
}

.toast.error {
  background-color: var(--color-error-700);
  color: var(--color-neutral-0);
}

.toast.warning {
  background-color: var(--color-warning-700);
  color: var(--color-neutral-0);
}

.toast.info {
  background-color: var(--color-info-700);
  color: var(--color-neutral-0);
}

@keyframes fadeToast {
  from {
    opacity: 0;
    transform: translate(-50%, 8px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* Button Core Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-colors), var(--transition-transform);
  min-height: 44px; /* WCAG 2.1 AA touch target compliance */
  min-width: 44px;
}

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

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-primary-600);
  color: var(--color-neutral-0);
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface-hover);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  background-color: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.btn-danger {
  background-color: var(--color-error-700);
  color: var(--color-neutral-0);
  border-color: transparent;
}

.btn-danger:hover {
  background-color: var(--color-error-500);
}

.btn-compact {
  min-height: 2rem;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
}

/* Form Elements */
.form-input {
  display: block;
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  transition: var(--transition-colors);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-border-focus) 20%, transparent);
}

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

/* Focus Visible Utilities */
.focus-ring:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* Accessibility Helpers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  border: 0;
  white-space: nowrap;
}

/* Loading States */
.loading-spinner {
  border: 2px solid var(--color-border);
  border-top: 2px solid var(--color-primary-500);
  border-radius: var(--radius-full);
  width: 1.5rem;
  height: 1.5rem;
  animation: spin 1s linear infinite;
}

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

/* Dark Mode Adjustments */
@media (prefers-color-scheme: dark) {
  .toast {
    background-color: var(--color-neutral-700);
  }
}

.dark .toast {
  background-color: var(--color-neutral-700);
}

/* Countdown Badge Component */
.countdown-badge {
  /* CSS custom properties for dynamic theming */
  --_bg: var(--countdown-comfortable-bg);
  --_fg: var(--countdown-comfortable-fg);
  --_bd: var(--countdown-comfortable-border);
  
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background-color: var(--_bg);
  color: var(--_fg);
  border: 1px solid var(--_bd);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  transition: var(--transition-colors);
  white-space: nowrap;
}

/* State variations using data attributes */
.countdown-badge[data-state="comfortable"] {
  --_bg: var(--countdown-comfortable-bg);
  --_fg: var(--countdown-comfortable-fg);
  --_bd: var(--countdown-comfortable-border);
}

.countdown-badge[data-state="attention"] {
  --_bg: var(--countdown-attention-bg);
  --_fg: var(--countdown-attention-fg);
  --_bd: var(--countdown-attention-border);
}

.countdown-badge[data-state="critical"] {
  --_bg: var(--countdown-critical-bg);
  --_fg: var(--countdown-critical-fg);
  --_bd: var(--countdown-critical-border);
  animation: countdown-pulse 1.5s ease-in-out infinite alternate;
}

.countdown-badge[data-state="expired"] {
  --_bg: var(--countdown-expired-bg);
  --_fg: var(--countdown-expired-fg);
  --_bd: var(--countdown-expired-border);
}

.countdown-badge[data-state="started"] {
  --_bg: var(--countdown-started-bg);
  --_fg: var(--countdown-started-fg);
  --_bd: var(--countdown-started-border);
}

/* Pulse animation for critical state */
@keyframes countdown-pulse {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0.8;
    transform: scale(1.02);
  }
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .countdown-badge[data-state="critical"] {
    animation: none;
  }
}

/* Optional micro call-to-action for attention/critical states */
.countdown-badge .badge-cta {
  display: none;
  margin-left: var(--space-1);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  background-color: color-mix(in srgb, var(--_fg) 10%, transparent);
  color: var(--_fg);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: var(--transition-colors);
}

.countdown-badge[data-state="attention"]:hover .badge-cta,
.countdown-badge[data-state="critical"]:hover .badge-cta,
.countdown-badge[data-state="attention"]:focus-within .badge-cta,
.countdown-badge[data-state="critical"]:focus-within .badge-cta {
  display: inline-flex;
}

.countdown-badge .badge-cta:hover,
.countdown-badge .badge-cta:focus {
  background-color: color-mix(in srgb, var(--_fg) 20%, transparent);
}

/* Icon slot for countdown badge */
.countdown-badge .badge-icon {
  width: 0.875rem;
  height: 0.875rem;
  flex-shrink: 0;
}

/* Event next info inherits countdown palette */
.campaign-card--event[data-countdown-state="comfortable"] .event-next-info:not(.event-next-info--ended) {
  background-color: var(--countdown-comfortable-bg);
  border-color: var(--countdown-comfortable-border);
  color: var(--countdown-comfortable-fg);
}

.campaign-card--event[data-countdown-state="attention"] .event-next-info:not(.event-next-info--ended) {
  background-color: var(--countdown-attention-bg);
  border-color: var(--countdown-attention-border);
  color: var(--countdown-attention-fg);
}

.campaign-card--event[data-countdown-state="critical"] .event-next-info:not(.event-next-info--ended) {
  background-color: var(--countdown-critical-bg);
  border-color: var(--countdown-critical-border);
  color: var(--countdown-critical-fg);
}

.campaign-card--event[data-countdown-state="started"] .event-next-info:not(.event-next-info--ended) {
  background-color: var(--countdown-started-bg);
  border-color: var(--countdown-started-border);
  color: var(--countdown-started-fg);
}

.campaign-card--event[data-countdown-state] .event-next-info:not(.event-next-info--ended) .event-next-info__lead,
.campaign-card--event[data-countdown-state] .event-next-info:not(.event-next-info--ended) .event-next-info__meta {
  color: inherit;
}

/* Mobile Optimizations */
@media (max-width: 640px) {
  .btn {
    min-height: 2.75rem;
    font-weight: var(--font-weight-semibold);
  }
  
  .form-input {
    font-size: 16px; /* Prevent zoom on iOS */
  }
  
  .toast-container {
    bottom: calc(var(--space-4) + var(--space-16) + env(safe-area-inset-bottom));
  }
}