/* =====================================
   KRATIA DATA - DARK MODE SYSTEM
   ===================================== */

/* Light Theme Variables (Default) */
:root {
  /* Primary Brand Colors */
  --primary-blue: #2563eb;
  --secondary-purple: #7c3aed;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-elevated: #ffffff;
  --bg-overlay: rgba(255, 255, 255, 0.95);

  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-disabled: #94a3b8;
  --text-inverse: #ffffff;

  /* Border Colors */
  --border-color: #e2e8f0;
  --border-focused: #3b82f6;
  --border-error: #ef4444;
  --border-success: #10b981;

  /* Status Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;

  /* Interactive Colors */
  --interactive-primary: #2563eb;
  --interactive-primary-hover: #1d4ed8;
  --interactive-secondary: #64748b;
  --interactive-secondary-hover: #475569;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Gradients */
  --gradient-primary: linear-gradient(
    135deg,
    var(--primary-blue) 0%,
    var(--secondary-purple) 100%
  );
  --gradient-background: linear-gradient(
    135deg,
    var(--bg-secondary) 0%,
    var(--bg-primary) 50%,
    var(--bg-tertiary) 100%
  );

  /* Chart Colors */
  --chart-color-1: #3b82f6;
  --chart-color-2: #8b5cf6;
  --chart-color-3: #10b981;
  --chart-color-4: #f59e0b;
  --chart-color-5: #ef4444;
  --chart-color-6: #06b6d4;
  --chart-color-7: #84cc16;
  --chart-color-8: #f97316;

  /* Glass Effect */
  --glass-bg-primary: rgba(255, 255, 255, 0.1);
  --glass-bg-secondary: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.2);

  /* Loading and Animation */
  --loading-primary: #3b82f6;
  --loading-secondary: #e5e7eb;

  /* Form Elements */
  --input-bg: #ffffff;
  --input-border: #d1d5db;
  --input-focus-border: #3b82f6;
  --input-placeholder: #9ca3af;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  /* Background Colors */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-elevated: #1e293b;
  --bg-overlay: rgba(15, 23, 42, 0.95);

  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-disabled: #64748b;
  --text-inverse: #0f172a;

  /* Border Colors */
  --border-color: #475569;
  --border-focused: #60a5fa;
  --border-error: #f87171;
  --border-success: #34d399;

  /* Status Colors */
  --success: #34d399;
  --warning: #fbbf24;
  --error: #f87171;
  --info: #60a5fa;

  /* Interactive Colors */
  --interactive-primary: #3b82f6;
  --interactive-primary-hover: #60a5fa;
  --interactive-secondary: #64748b;
  --interactive-secondary-hover: #94a3b8;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);

  /* Gradients */
  --gradient-background: linear-gradient(
    135deg,
    var(--bg-secondary) 0%,
    var(--bg-primary) 50%,
    var(--bg-tertiary) 100%
  );

  /* Chart Colors - Adjusted for dark theme */
  --chart-color-1: #60a5fa;
  --chart-color-2: #a78bfa;
  --chart-color-3: #34d399;
  --chart-color-4: #fbbf24;
  --chart-color-5: #f87171;
  --chart-color-6: #22d3ee;
  --chart-color-7: #a3e635;
  --chart-color-8: #fb923c;

  /* Glass Effect */
  --glass-bg-primary: rgba(0, 0, 0, 0.2);
  --glass-bg-secondary: rgba(0, 0, 0, 0.1);
  --glass-border: rgba(255, 255, 255, 0.1);

  /* Loading and Animation */
  --loading-primary: #60a5fa;
  --loading-secondary: #374151;

  /* Form Elements */
  --input-bg: #1e293b;
  --input-border: #475569;
  --input-focus-border: #60a5fa;
  --input-placeholder: #64748b;
}

/* Theme Toggle Button Styles */
.theme-toggle {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50px;
  padding: 8px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  min-width: 120px;
  justify-content: center;
}

.theme-toggle:hover {
  border-color: var(--interactive-primary);
  background: var(--bg-elevated);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.theme-toggle:active {
  transform: translateY(0);
}

.theme-toggle i {
  font-size: 16px;
  transition: all var(--transition-normal);
}

.theme-toggle span {
  transition: all var(--transition-normal);
}

/* Theme Toggle Animation */
.theme-toggle.switching {
  animation: themeSwitch 0.6s ease;
}

@keyframes themeSwitch {
  0% {
    transform: scale(1) rotate(0deg);
  }
  50% {
    transform: scale(1.1) rotate(180deg);
  }
  100% {
    transform: scale(1) rotate(360deg);
  }
}

/* Global Theme Transition */
[data-theme] {
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal);
}

[data-theme] * {
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-normal);
}

/* Smooth transitions for theme changes */
body,
.main-header,
.sidebar,
.main-content,
.card,
.form-input,
.btn,
.chart-container {
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-normal);
}

/* Base element styling */
body {
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* Common Elements Dark Mode Support */
.card,
.panel,
.widget {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.header,
.main-header {
  background: var(--bg-overlay);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(20px);
}

.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
}

.btn {
  border: 1px solid var(--border-color);
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--interactive-primary);
}

.btn-primary {
  background: var(--interactive-primary);
  color: var(--text-inverse);
  border-color: var(--interactive-primary);
}

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

.form-input,
.form-select,
.form-textarea {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text-primary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

/* Loading Overlay */
.loading-overlay {
  background: var(--bg-overlay);
}

.loading-spinner {
  border: 4px solid var(--loading-secondary);
  border-top: 4px solid var(--loading-primary);
}

/* Status Messages */
.status-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border-color: var(--success);
}

.status-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border-color: var(--warning);
}

.status-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border-color: var(--error);
}

.status-info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info);
  border-color: var(--info);
}

/* Navigation */
.nav-link {
  color: var(--text-secondary);
}

.nav-link:hover,
.nav-link.active {
  color: var(--interactive-primary);
}

/* Tables */
.table {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
}

.table th {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.table td {
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.table tr:hover {
  background: var(--bg-secondary);
}

/* Modal */
.modal {
  background: var(--bg-overlay);
}

.modal-content {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
}

/* Tooltip */
.tooltip {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

/* Chart Container */
.chart-container {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
}

/* Media Queries for System Preference */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    /* Apply dark theme by default if user prefers dark mode and no theme is set */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;
    --bg-overlay: rgba(15, 23, 42, 0.95);
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
  }
}

/* Print Styles */
@media print {
  [data-theme="dark"] {
    --bg-primary: #ffffff !important;
    --bg-secondary: #f8fafc !important;
    --bg-tertiary: #f1f5f9 !important;
    --text-primary: #0f172a !important;
    --text-secondary: #334155 !important;
    --border-color: #e2e8f0 !important;
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
  }

  [data-theme="dark"] {
    --border-color: #ffffff;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  [data-theme] *,
  .theme-toggle {
    transition: none !important;
    animation: none !important;
  }
}