/**
 * WakeRoute Shared Styles
 * Common CSS variables, components, and utilities
 */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */

:root {
  /* Primary colors */
  --wr-primary: #1E88E5;
  --wr-primary-dark: #1565C0;
  --wr-primary-light: #42A5F5;
  --wr-primary-bg: rgba(30, 136, 229, 0.08);
  --wr-primary-border: rgba(30, 136, 229, 0.18);

  /* Accent colors */
  --wr-accent: #FF7043;
  --wr-accent-dark: #F4511E;

  /* Status colors */
  --wr-success: #22C55E;
  --wr-success-bg: rgba(34, 197, 94, 0.08);
  --wr-warning: #F59E0B;
  --wr-warning-bg: rgba(245, 158, 11, 0.08);
  --wr-error: #EF4444;
  --wr-error-bg: rgba(239, 68, 68, 0.08);
  --wr-info: #3B82F6;
  --wr-info-bg: rgba(59, 130, 246, 0.08);

  /* Neutral colors */
  --wr-bg: #f5f7fb;
  --wr-bg-gradient: radial-gradient(circle at top left, #e3f2fd 0, #f5f7fb 45%, #eef2ff 100%);
  --wr-card-bg: #ffffff;
  --wr-border: #dde3ee;
  --wr-border-light: #e5e7f0;

  /* Text colors */
  --wr-text-main: #1f2933;
  --wr-text-muted: #6b7280;
  --wr-text-light: #9ca3af;

  /* Shadows */
  --wr-shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.06);
  --wr-shadow-md: 0 12px 30px rgba(15, 23, 42, 0.08);
  --wr-shadow-lg: 0 18px 45px rgba(15, 23, 42, 0.1);
  --wr-shadow-button: 0 10px 20px rgba(21, 101, 192, 0.35);
  --wr-shadow-button-hover: 0 16px 28px rgba(21, 101, 192, 0.4);

  /* Spacing scale */
  --wr-space-xs: 4px;
  --wr-space-sm: 8px;
  --wr-space-md: 12px;
  --wr-space-lg: 16px;
  --wr-space-xl: 24px;
  --wr-space-2xl: 32px;

  /* Border radius */
  --wr-radius-sm: 8px;
  --wr-radius-md: 12px;
  --wr-radius-lg: 16px;
  --wr-radius-full: 999px;

  /* Typography */
  --wr-font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --wr-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Touch targets */
  --wr-touch-target: 44px;

  /* Transitions */
  --wr-transition-fast: 0.08s ease;
  --wr-transition-normal: 0.15s ease;
  --wr-transition-slow: 0.25s ease;

  /* Z-index scale */
  --wr-z-dropdown: 100;
  --wr-z-sticky: 200;
  --wr-z-modal: 300;
  --wr-z-toast: 400;
}

/* Dark mode variables (for future use) */
@media (prefers-color-scheme: dark) {
  :root.dark-mode {
    --wr-bg: #0f172a;
    --wr-bg-gradient: radial-gradient(circle at top left, #1e293b 0, #0f172a 45%, #1e1b4b 100%);
    --wr-card-bg: #1e293b;
    --wr-border: #334155;
    --wr-border-light: #475569;
    --wr-text-main: #f1f5f9;
    --wr-text-muted: #94a3b8;
    --wr-text-light: #64748b;
  }
}

/* ============================================
   Base Styles
   ============================================ */

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

/* ============================================
   Button Components
   ============================================ */

/* Base button */
.wr-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-family: var(--wr-font-family);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border-radius: var(--wr-radius-full);
  border: 1px solid var(--wr-border);
  background: rgba(255, 255, 255, 0.9);
  color: var(--wr-text-main);
  cursor: pointer;
  transition: background var(--wr-transition-normal),
              box-shadow var(--wr-transition-normal),
              transform var(--wr-transition-fast);
  white-space: nowrap;
  min-height: var(--wr-touch-target);
}

.wr-btn:hover {
  background: #ffffff;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
  transform: translateY(-1px);
}

.wr-btn:active {
  transform: translateY(0);
}

.wr-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Primary button */
.wr-btn--primary {
  border-color: var(--wr-primary);
  color: #ffffff;
  background: linear-gradient(135deg, var(--wr-primary), var(--wr-primary-dark));
  box-shadow: var(--wr-shadow-button);
}

.wr-btn--primary:hover {
  box-shadow: var(--wr-shadow-button-hover);
  filter: brightness(1.02);
}

.wr-btn--primary:active {
  box-shadow: 0 10px 18px rgba(21, 101, 192, 0.3);
}

/* Danger button */
.wr-btn--danger {
  border-color: var(--wr-error);
  color: #b91c1c;
  background: var(--wr-error-bg);
}

.wr-btn--danger:hover {
  background: rgba(239, 68, 68, 0.15);
  box-shadow: 0 8px 18px rgba(239, 68, 68, 0.18);
}

/* Small button */
.wr-btn--sm {
  padding: 6px 12px;
  font-size: 12px;
  min-height: 36px;
}

/* Icon-only button */
.wr-btn--icon {
  padding: 8px;
  min-width: var(--wr-touch-target);
}

/* Full-width button */
.wr-btn--block {
  width: 100%;
}

/* ============================================
   Pill / Tag Components
   ============================================ */

.wr-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: var(--wr-radius-full);
  background: var(--wr-primary-bg);
  color: var(--wr-primary-dark);
  border: 1px solid var(--wr-primary-border);
  text-decoration: none;
  min-height: var(--wr-touch-target);
}

.wr-pill--link {
  cursor: pointer;
  transition: background var(--wr-transition-normal);
}

.wr-pill--link:hover {
  background: rgba(30, 136, 229, 0.12);
  text-decoration: none;
}

/* ============================================
   Card Components
   ============================================ */

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

.wr-card--sm {
  padding: var(--wr-space-md) var(--wr-space-lg);
  border-radius: var(--wr-radius-md);
  box-shadow: var(--wr-shadow-md);
}

/* ============================================
   Form Components
   ============================================ */

.wr-form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.wr-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--wr-text-main);
}

.wr-input,
.wr-select {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  font-family: var(--wr-font-family);
  border-radius: var(--wr-radius-sm);
  border: 1px solid var(--wr-border);
  background: #f9fafb;
  color: var(--wr-text-main);
  outline: none;
  transition: border-color var(--wr-transition-normal),
              box-shadow var(--wr-transition-normal),
              background var(--wr-transition-normal);
  min-height: var(--wr-touch-target);
}

.wr-input:focus,
.wr-select:focus {
  border-color: var(--wr-primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.15);
}

.wr-input::placeholder {
  color: var(--wr-text-light);
}

/* Prevent zoom on mobile for inputs */
@media (max-width: 720px) {
  .wr-input,
  .wr-select {
    font-size: 16px;
  }
}

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

.wr-input--error:focus,
.wr-select--error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.wr-field-hint {
  font-size: 12px;
  color: var(--wr-text-muted);
  margin-top: 2px;
}

.wr-field-error {
  font-size: 12px;
  color: var(--wr-error);
  margin-top: 2px;
}

/* ============================================
   Loading Spinner
   ============================================ */

.wr-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: wr-spin 0.75s linear infinite;
}

.wr-spinner--sm {
  width: 14px;
  height: 14px;
  border-width: 2px;
}

.wr-spinner--lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

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

/* Loading overlay */
.wr-loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.8);
  border-radius: inherit;
  z-index: 10;
}

/* Button with loading state */
.wr-btn--loading {
  pointer-events: none;
  opacity: 0.8;
}

.wr-btn--loading .wr-btn-text {
  visibility: hidden;
}

.wr-btn--loading .wr-spinner {
  position: absolute;
}

/* ============================================
   Skeleton Loader
   ============================================ */

.wr-skeleton {
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 200% 100%;
  animation: wr-skeleton-shimmer 1.5s infinite;
  border-radius: var(--wr-radius-sm);
}

.wr-skeleton--text {
  height: 1em;
  margin: 4px 0;
}

.wr-skeleton--title {
  height: 1.5em;
  width: 60%;
}

.wr-skeleton--circle {
  border-radius: 50%;
}

@keyframes wr-skeleton-shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ============================================
   Empty State
   ============================================ */

.wr-empty-state {
  padding: var(--wr-space-xl) var(--wr-space-lg);
  text-align: center;
  color: var(--wr-text-muted);
}

.wr-empty-state__icon {
  font-size: 48px;
  margin-bottom: var(--wr-space-md);
  opacity: 0.5;
}

.wr-empty-state__title {
  font-size: 16px;
  font-weight: 600;
  color: var(--wr-text-main);
  margin-bottom: var(--wr-space-sm);
}

.wr-empty-state__description {
  font-size: 13px;
  max-width: 300px;
  margin: 0 auto;
}

/* ============================================
   Tables (Responsive)
   ============================================ */

.wr-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.wr-table thead {
  background: #f3f6ff;
}

.wr-table th,
.wr-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--wr-border-light);
}

.wr-table th {
  font-weight: 600;
  font-size: 12px;
  color: var(--wr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.wr-table tbody tr:hover {
  background: #f9fafb;
}

/* Mobile card layout for tables */
@media (max-width: 720px) {
  .wr-table--responsive,
  .wr-table--responsive thead,
  .wr-table--responsive tbody,
  .wr-table--responsive tr,
  .wr-table--responsive th,
  .wr-table--responsive td {
    display: block;
    width: 100%;
  }

  .wr-table--responsive thead {
    display: none;
  }

  .wr-table--responsive tbody tr {
    background: #ffffff;
    border: 1px solid var(--wr-border-light);
    border-radius: var(--wr-radius-md);
    margin-bottom: var(--wr-space-md);
    padding: var(--wr-space-sm) var(--wr-space-md);
    box-shadow: var(--wr-shadow-sm);
  }

  .wr-table--responsive tbody tr:hover {
    background: #ffffff;
  }

  .wr-table--responsive td {
    border: none;
    padding: 8px 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .wr-table--responsive td::before {
    content: attr(data-label);
    font-size: 11px;
    font-weight: 600;
    color: var(--wr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.02em;
  }
}

/* ============================================
   Utility Classes
   ============================================ */

/* Flexbox utilities */
.wr-flex { display: flex; }
.wr-flex-col { flex-direction: column; }
.wr-items-center { align-items: center; }
.wr-justify-center { justify-content: center; }
.wr-justify-between { justify-content: space-between; }
.wr-gap-xs { gap: var(--wr-space-xs); }
.wr-gap-sm { gap: var(--wr-space-sm); }
.wr-gap-md { gap: var(--wr-space-md); }
.wr-gap-lg { gap: var(--wr-space-lg); }

/* Spacing utilities */
.wr-mt-sm { margin-top: var(--wr-space-sm); }
.wr-mt-md { margin-top: var(--wr-space-md); }
.wr-mt-lg { margin-top: var(--wr-space-lg); }
.wr-mb-sm { margin-bottom: var(--wr-space-sm); }
.wr-mb-md { margin-bottom: var(--wr-space-md); }
.wr-mb-lg { margin-bottom: var(--wr-space-lg); }

/* Text utilities */
.wr-text-muted { color: var(--wr-text-muted); }
.wr-text-sm { font-size: 12px; }
.wr-text-center { text-align: center; }
.wr-font-medium { font-weight: 500; }
.wr-font-semibold { font-weight: 600; }

/* Visibility */
.wr-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;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Tablet (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  :root {
    --wr-space-lg: 14px;
    --wr-space-xl: 20px;
  }

  /* Tablet-optimized grid layouts */
  .wr-grid-tablet-1 {
    grid-template-columns: 1fr !important;
  }

  .wr-grid-tablet-2 {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  /* Tablet header adjustments */
  .wr-header-tablet-stack {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  /* Better spacing for cards on tablet */
  .wr-card {
    padding: var(--wr-space-md) var(--wr-space-lg);
  }

  /* Tablet table optimizations */
  .wr-table th,
  .wr-table td {
    padding: 8px 10px;
    font-size: 12px;
  }
}

/* Mobile (< 720px) */
@media (max-width: 720px) {
  :root {
    --wr-space-lg: 12px;
    --wr-space-xl: 16px;
  }

  /* Ensure touch targets on mobile */
  .wr-btn,
  .wr-pill {
    min-height: var(--wr-touch-target);
    padding-top: 10px;
    padding-bottom: 10px;
  }

  /* Full-width buttons on mobile in certain contexts */
  .wr-mobile-block {
    width: 100%;
    justify-content: center;
  }

  /* Stack header elements on mobile */
  .wr-header-mobile-stack {
    flex-direction: column;
    align-items: stretch;
    gap: var(--wr-space-sm);
  }

  /* Full-width action buttons on mobile */
  .wr-actions-mobile-full .wr-btn,
  .wr-actions-mobile-full .wr-pill {
    flex: 1;
    justify-content: center;
  }

  /* Card adjustments on mobile */
  .wr-card {
    padding: var(--wr-space-md);
    border-radius: var(--wr-radius-md);
  }
}

/* Small mobile (< 480px) */
@media (max-width: 480px) {
  :root {
    --wr-space-md: 10px;
    --wr-space-lg: 10px;
  }

  .wr-btn {
    padding: 10px 12px;
    font-size: 12px;
  }

  .wr-pill {
    padding: 8px 10px;
    font-size: 11px;
  }
}