/**
 * Sophia STARS - Dark Mode CSS Variables and Styles
 * Complete theme system with smooth transitions
 * Version: 2026.1
 */

/* ========================================
   CSS VARIABLES - LIGHT THEME (DEFAULT)
   ======================================== */

:root {
  /* Primary Colors */
  --color-primary: #003057;
  --color-primary-hover: #005a9e;
  --color-primary-light: #0066cc;
  
  /* Accent Colors */
  --color-accent: #8b5cf6;
  --color-accent-hover: #9333ea;
  
  /* Background Colors */
  --bg-body: #f8f9fa;
  --bg-card: #ffffff;
  --bg-sidebar: linear-gradient(135deg, rgba(0, 48, 87, 0.95), rgba(0, 90, 158, 0.95));
  --bg-header: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  --bg-hover: #f3f4f6;
  --bg-active: #e5e7eb;
  
  /* Text Colors */
  --text-primary: #1f2937;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-inverse: #ffffff;
  
  /* Border Colors */
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --border-hover: #cbd5e1;
  
  /* Shadow Colors */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 48, 87, 0.08);
  --shadow-lg: 0 10px 24px rgba(0, 48, 87, 0.12);
  --shadow-xl: 0 20px 40px rgba(0, 48, 87, 0.15);
  
  /* Gradient Accents */
  --gradient-blue: linear-gradient(135deg, #003057 0%, #0066cc 100%);
  --gradient-purple: linear-gradient(135deg, #6b21a8 0%, #8b5cf6 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(147, 51, 234, 0.1) 100%);
  
  /* Status Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #dc2626;
  --color-info: #3b82f6;
  
  /* Chart Colors */
  --chart-grid: rgba(203, 213, 225, 0.3);
  --chart-text: #64748b;
}

/* ========================================
   DARK THEME VARIABLES
   ======================================== */

[data-theme="dark"] {
  /* Primary Colors */
  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-primary-light: #93c5fd;
  
  /* Accent Colors */
  --color-accent: #a855f7;
  --color-accent-hover: #c084fc;
  
  /* Background Colors */
  --bg-body: #0f172a;
  --bg-card: #1e293b;
  --bg-sidebar: linear-gradient(135deg, rgba(15, 23, 42, 0.98), rgba(30, 41, 59, 0.98));
  --bg-header: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  --bg-hover: #334155;
  --bg-active: #475569;
  
  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  --text-light: #64748b;
  --text-inverse: #0f172a;
  
  /* Border Colors */
  --border-color: #334155;
  --border-light: #1e293b;
  --border-hover: #475569;
  
  /* Shadow Colors */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
  
  /* Gradient Accents */
  --gradient-blue: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  --gradient-purple: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  
  /* Status Colors (slightly brighter for dark mode) */
  --color-success: #34d399;
  --color-warning: #fbbf24;
  --color-error: #f87171;
  --color-info: #60a5fa;
  
  /* Chart Colors */
  --chart-grid: rgba(71, 85, 105, 0.3);
  --chart-text: #94a3b8;
}

/* ========================================
   SMOOTH THEME TRANSITIONS
   ======================================== */

* {
  transition: background-color 0.3s ease, 
              color 0.3s ease, 
              border-color 0.3s ease,
              box-shadow 0.3s ease;
}

/* Disable transitions during initial load */
.no-transitions * {
  transition: none !important;
}

/* ========================================
   COMPONENT STYLES WITH THEME SUPPORT
   ======================================== */

body {
  background: var(--bg-body);
  color: var(--text-primary);
}

/* Cards */
.stat-card,
.house-card,
.chart-container,
.activity-item,
.quick-button {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
}

.stat-card:hover,
.house-card:hover,
.quick-button:hover {
  box-shadow: var(--shadow-lg);
}

/* Sidebar & Header - Minimal overrides to preserve existing design */
/* Dark mode only affects cards, text, and forms - not major layout elements */

[data-theme="dark"] .card,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .dashboard-card {
  background: var(--bg-card);
  border-color: var(--border-color);
}

/* Buttons - Only apply in dark mode */
[data-theme="dark"] .btn-primary {
  background: var(--gradient-blue);
  color: var(--text-inverse);
}

[data-theme="dark"] .btn-primary:hover {
  filter: brightness(1.1);
}

[data-theme="dark"] .btn-secondary {
  background: var(--bg-hover);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-secondary:hover {
  background: var(--bg-active);
}

/* Forms - Only apply in dark mode */
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Tables - Only apply in dark mode */
[data-theme="dark"] table {
  background: var(--bg-card);
  color: var(--text-primary);
}

[data-theme="dark"] thead {
  background: var(--bg-hover);
  color: var(--text-secondary);
}

[data-theme="dark"] tbody tr:hover {
  background: var(--bg-hover);
}

[data-theme="dark"] tbody tr {
  border-color: var(--border-light);
}

/* Modals - Only apply in dark mode */
[data-theme="dark"] .modal-content {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.modal-overlay {
  background: rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .modal-overlay {
  background: rgba(0, 0, 0, 0.7);
}

/* Dropdowns - Only apply in dark mode */
[data-theme="dark"] .dropdown-content {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .dropdown-content a:hover {
  background: var(--bg-hover);
}

/* Tooltips - Only apply in dark mode */
[data-theme="dark"] .tooltip {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
}

/* ========================================
   THEME TOGGLE BUTTON STYLES
   ======================================== */

.theme-toggle-container {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-hover);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  background: var(--bg-active);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.theme-icon {
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.theme-toggle-container:not(.dark) .moon-icon {
  display: none;
}

.theme-toggle-container.dark .sun-icon {
  display: none;
}

.theme-toggle-btn:hover .theme-icon {
  transform: rotate(20deg);
}

.theme-label {
  flex: 1;
  text-align: left;
}

/* Theme Menu */
.theme-menu {
  position: absolute;
  bottom: 100%;
  left: 1rem;
  right: 1rem;
  margin-bottom: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 1000;
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.9375rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.theme-option:hover {
  background: var(--bg-hover);
}

.theme-option.active {
  background: var(--gradient-subtle);
  color: var(--color-primary);
  font-weight: 600;
}

.theme-option svg {
  flex-shrink: 0;
  opacity: 0.7;
}

.theme-option.active svg {
  opacity: 1;
}

/* ========================================
   DARK MODE SPECIFIC ADJUSTMENTS
   ======================================== */

/* Enhance contrast for important elements */
[data-theme="dark"] .stat-value {
  color: var(--text-primary);
  font-weight: 700;
}

[data-theme="dark"] .stat-label {
  color: var(--text-muted);
}

/* Adjust chart backgrounds */
[data-theme="dark"] canvas {
  filter: brightness(0.95);
}

/* Scrollbar styling */
[data-theme="dark"] ::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
  background: var(--bg-body);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 6px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: var(--bg-active);
}

/* Code blocks (if any) */
[data-theme="dark"] code,
[data-theme="dark"] pre {
  background: #0d1117;
  color: #c9d1d9;
  border-color: var(--border-color);
}

/* Selection */
[data-theme="dark"] ::selection {
  background: rgba(59, 130, 246, 0.3);
  color: var(--text-primary);
}

/* Links */
a {
  color: var(--color-primary);
}

a:hover {
  color: var(--color-primary-hover);
}

/* Status badges */
.badge-success {
  background: var(--color-success);
  color: var(--text-inverse);
}

.badge-warning {
  background: var(--color-warning);
  color: var(--text-inverse);
}

.badge-error {
  background: var(--color-error);
  color: var(--text-inverse);
}

.badge-info {
  background: var(--color-info);
  color: var(--text-inverse);
}

/* Loading states */
[data-theme="dark"] .sophia-skeleton,
[data-theme="dark"] .sophia-skeleton-enhanced {
  background: linear-gradient(
    90deg,
    #1e293b 0%,
    rgba(59, 130, 246, 0.1) 25%,
    rgba(139, 92, 246, 0.1) 50%,
    rgba(59, 130, 246, 0.1) 75%,
    #1e293b 100%
  );
}

/* Footer */
.footer-enhanced {
  background: var(--bg-header);
  border-color: var(--border-color);
}

/* Print styles - always use light theme */
@media print {
  * {
    background: white !important;
    color: black !important;
    border-color: #e5e7eb !important;
  }
}

/* ========================================
   ACCESSIBILITY ENHANCEMENTS
   ======================================== */

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #94a3b8;
    --text-muted: #475569;
  }
  
  [data-theme="dark"] {
    --border-color: #64748b;
    --text-muted: #cbd5e1;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* ========================================
   RESPONSIVE ADJUSTMENTS
   ======================================== */

@media (max-width: 768px) {
  .theme-toggle-container {
    padding: 0.5rem 0.75rem;
  }
  
  .theme-toggle-btn {
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
  }
  
  .theme-menu {
    left: 0.75rem;
    right: 0.75rem;
  }
}