/**
 * MicroPMS Universal Design System Tokens & Base Components
 * Source of Truth: design-system/micropms/MASTER.md
 */

:root {
  /* Color Tokens */
  --pms-canvas: #F8FAFC;
  --pms-surface: #FFFFFF;
  --pms-surface-muted: #F1F5F9;
  --pms-border: #E2E8F0;
  --pms-border-strong: #CBD5E1;
  --pms-text: #0F172A;
  --pms-text-secondary: #475569;
  --pms-text-muted: #64748B;
  --pms-action-primary: #111111;
  --pms-action-primary-hover: #000000;
  --pms-action-booking: #CA8A04;
  --pms-action-booking-hover: #A16207;
  --pms-focus: #2563EB;
  --pms-success: #047857;
  --pms-success-hover: #065F46;
  --pms-success-surface: #ECFDF5;
  --pms-warning: #B45309;
  --pms-warning-surface: #FFFBEB;
  --pms-error: #B91C1C;
  --pms-error-hover: #991B1B;
  --pms-error-surface: #FEF2F2;

  /* Typography */
  --pms-font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --pms-font-size-floor: 12px;

  /* Spacing Scale (4px) */
  --pms-space-1: 4px;
  --pms-space-2: 8px;
  --pms-space-3: 12px;
  --pms-space-4: 16px;
  --pms-space-6: 24px;
  --pms-space-8: 32px;
  --pms-space-12: 48px;
  --pms-space-16: 64px;

  /* Radii */
  --pms-radius-sm: 8px;
  --pms-radius-md: 12px;
  --pms-radius-lg: 16px;
  --pms-radius-xl: 20px;
  --pms-radius-full: 9999px;

  /* Depth & Shadows */
  --pms-shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --pms-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --pms-shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --pms-shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.05);

  /* Transitions */
  --pms-transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

/* Global Focus Ring: Strict 3px Blue #2563EB with 3px offset */
:focus-visible,
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--pms-focus) !important;
  outline-offset: 3px !important;
}

/* Base Body & Layout Defaults */
body {
  font-family: var(--pms-font-family);
  background-color: var(--pms-canvas);
  color: var(--pms-text);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

/* Tabular Numerals for Financial Data */
.tabular-nums,
[data-tabular-nums] {
  font-variant-numeric: tabular-nums;
}

/* Strict Typography Floor */
.text-min-floor,
span, p, label, button, a {
  min-font-size: var(--pms-font-size-floor);
}

/* ──────────────────────────────────────────────────────────────────────────
   Base Component: Buttons (.pms-btn)
   - Mandatory minimum 44px touch target on coarse/mobile pointers
   - No layout-shifting hover scale (only color/shadow/border transition)
   ────────────────────────────────────────────────────────────────────────── */
.pms-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--pms-font-family);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.25rem;
  border-radius: var(--pms-radius-md);
  padding: 0.625rem 1.125rem;
  min-height: 44px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--pms-transition);
  text-decoration: none;
  box-sizing: border-box;
  user-select: none;
  white-space: nowrap;
}

.pms-btn:disabled,
.pms-btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed !important;
  pointer-events: none;
}

/* Variants */
.pms-btn-primary {
  background-color: var(--pms-action-primary);
  color: #FFFFFF;
  box-shadow: var(--pms-shadow-xs);
}
.pms-btn-primary:hover:not(:disabled) {
  background-color: var(--pms-action-primary-hover);
  box-shadow: var(--pms-shadow-sm);
}

.pms-btn-secondary {
  background-color: var(--pms-surface);
  color: var(--pms-text);
  border-color: var(--pms-border);
  box-shadow: var(--pms-shadow-xs);
}
.pms-btn-secondary:hover:not(:disabled) {
  background-color: var(--pms-surface-muted);
  border-color: var(--pms-border-strong);
}

.pms-btn-cta {
  background-color: var(--pms-action-booking);
  color: #FFFFFF;
  box-shadow: var(--pms-shadow-xs);
}
.pms-btn-cta:hover:not(:disabled) {
  background-color: var(--pms-action-booking-hover);
  box-shadow: var(--pms-shadow-sm);
}

.pms-btn-success {
  background-color: var(--pms-success);
  color: #FFFFFF;
  box-shadow: var(--pms-shadow-xs);
}
.pms-btn-success:hover:not(:disabled) {
  background-color: var(--pms-success-hover);
  box-shadow: var(--pms-shadow-sm);
}

.pms-btn-danger {
  background-color: var(--pms-error);
  color: #FFFFFF;
  box-shadow: var(--pms-shadow-xs);
}
.pms-btn-danger:hover:not(:disabled) {
  background-color: var(--pms-error-hover);
  box-shadow: var(--pms-shadow-sm);
}

.pms-btn-ghost {
  background-color: transparent;
  color: var(--pms-text-secondary);
}
.pms-btn-ghost:hover:not(:disabled) {
  background-color: var(--pms-surface-muted);
  color: var(--pms-text);
}

/* Sizes */
.pms-btn-sm {
  min-height: 44px; /* Accessible touch target preserved */
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
}
@media (min-width: 768px) {
  .pms-btn-sm {
    min-height: 36px;
  }
}
.pms-btn-lg {
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

/* ──────────────────────────────────────────────────────────────────────────
   Base Component: Inputs & Forms (.pms-input, .pms-select)
   - 16px font floor on mobile to prevent iOS Safari auto-zoom
   ────────────────────────────────────────────────────────────────────────── */
.pms-input,
.pms-select,
.pms-textarea {
  display: block;
  width: 100%;
  font-family: var(--pms-font-family);
  font-size: 1rem; /* 16px mobile baseline */
  line-height: 1.5;
  color: var(--pms-text);
  background-color: var(--pms-surface);
  border: 1px solid var(--pms-border);
  border-radius: var(--pms-radius-md);
  padding: 0.625rem 0.875rem;
  min-height: 44px;
  box-sizing: border-box;
  transition: var(--pms-transition);
}

@media (min-width: 768px) {
  .pms-input,
  .pms-select,
  .pms-textarea {
    font-size: 0.875rem; /* 14px on desktop */
  }
}

.pms-input:focus,
.pms-select:focus,
.pms-textarea:focus {
  border-color: var(--pms-focus);
}

/* ──────────────────────────────────────────────────────────────────────────
   Base Component: Cards & Containers (.pms-card)
   ────────────────────────────────────────────────────────────────────────── */
.pms-card {
  background-color: var(--pms-surface);
  border: 1px solid var(--pms-border);
  border-radius: var(--pms-radius-md);
  box-shadow: var(--pms-shadow-xs);
  box-sizing: border-box;
}

.pms-card-padded {
  padding: 1.25rem;
}

/* ──────────────────────────────────────────────────────────────────────────
   Base Component: Badges & Tags (.pms-badge)
   - Strict >= 12px font floor
   ────────────────────────────────────────────────────────────────────────── */
.pms-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--pms-font-family);
  font-size: 0.75rem; /* Exactly 12px floor */
  font-weight: 700;
  line-height: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.625rem;
  border-radius: var(--pms-radius-full);
  border: 1px solid transparent;
  white-space: nowrap;
}

.pms-badge-clean,
.pms-badge-success {
  background-color: var(--pms-success-surface);
  color: var(--pms-success);
  border-color: rgba(4, 120, 87, 0.2);
}

.pms-badge-warning,
.pms-badge-dirty {
  background-color: var(--pms-warning-surface);
  color: var(--pms-warning);
  border-color: rgba(180, 83, 9, 0.2);
}

.pms-badge-danger,
.pms-badge-ooo {
  background-color: var(--pms-error-surface);
  color: var(--pms-error);
  border-color: rgba(185, 28, 28, 0.2);
}

.pms-badge-info,
.pms-badge-occupied {
  background-color: var(--pms-surface-muted);
  color: var(--pms-text);
  border-color: var(--pms-border);
}

/* ──────────────────────────────────────────────────────────────────────────
   Base Component: Tables (.pms-table)
   ────────────────────────────────────────────────────────────────────────── */
.pms-table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--pms-border);
  border-radius: var(--pms-radius-md);
  background: var(--pms-surface);
}

.pms-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--pms-font-family);
  font-size: 0.875rem;
  text-align: left;
}

.pms-table thead th {
  background-color: var(--pms-surface-muted);
  color: var(--pms-text-secondary);
  font-size: 0.75rem; /* 12px floor */
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--pms-border);
  position: sticky;
  top: 0;
  z-index: 2;
}

.pms-table tbody td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--pms-border);
  color: var(--pms-text);
  vertical-align: middle;
}

.pms-table tbody tr:hover {
  background-color: #F8FAFC;
}

.pms-table tbody tr:last-child td {
  border-bottom: none;
}

/* ──────────────────────────────────────────────────────────────────────────
   Base Component: Skeleton Loaders & Empty States
   ────────────────────────────────────────────────────────────────────────── */
@keyframes pms-shimmer-kf {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.pms-skeleton {
  background: linear-gradient(90deg, #F1F5F9 25%, #E2E8F0 50%, #F1F5F9 75%);
  background-size: 200% 100%;
  animation: pms-shimmer-kf 1.5s infinite;
  border-radius: var(--pms-radius-sm);
  display: block;
}

.pms-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--pms-text-muted);
}

.pms-empty-state i {
  font-size: 2.5rem;
  color: var(--pms-border-strong);
  margin-bottom: 0.75rem;
}

.pms-empty-state h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--pms-text);
  margin: 0 0 0.25rem 0;
}

.pms-empty-state p {
  font-size: 0.875rem;
  color: var(--pms-text-secondary);
  max-width: 24rem;
  margin: 0 0 1rem 0;
}