/* ============================================
   THEME SYSTEM - CSS VARIABLES
   ============================================ */

:root {
  /* Light Mode Colors */
  --bg-primary: #f0f4f8;
  --bg-secondary: #ffffff;
  --bg-accent: #f8fafc;
  --bg-card: #ffffff;
  --bg-header: #1e293b;
  --bg-footer: #ffffff;

  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --border-color: #e2e8f0;
  --border-accent: #cbd5e1;

  --accent-blue: #2563eb;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-orange: #f97316;
  --accent-red: #ef4444;
  --accent-purple: #a855f7;
  --accent-yellow: #eab308;

  --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);
}

/* Dark Mode Colors */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-accent: #334155;
  --bg-card: #1e293b;
  --bg-header: #0f172a;
  --bg-footer: #1e293b;

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;

  --border-color: #334155;
  --border-accent: #475569;

  --accent-blue: #3b82f6;
  --accent-cyan: #22d3ee;
  --accent-green: #22c55e;
  --accent-orange: #fb923c;
  --accent-red: #f87171;
  --accent-purple: #c084fc;
  --accent-yellow: #fbbf24;

  --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, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

/* Apply theme to body and common elements */
body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Sections */
section {
  transition: background-color 0.3s ease;
}

.bg-white {
  background-color: var(--bg-secondary) !important;
}

.bg-slate-50,
.bg-gray-50 {
  background-color: var(--bg-accent) !important;
}

/* Text colors */
.text-gray-900 {
  color: var(--text-primary) !important;
}

.text-gray-700 {
  color: var(--text-secondary) !important;
}

.text-gray-600,
.text-gray-500 {
  color: var(--text-muted) !important;
}

/* Borders */
.border-gray-200,
.border-gray-300 {
  border-color: var(--border-color) !important;
}

/* Cards */
.card-hover {
  background-color: var(--bg-card);
  border-color: var(--border-color);
  transition: all 0.3s ease;
}

/* Theme Toggle Button */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--bg-accent);
  border: 2px solid var(--border-accent);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  font-size: 18px;
}

.theme-toggle:hover {
  background-color: var(--accent-cyan);
  color: var(--text-inverse);
  transform: rotate(180deg);
}

/* Header & Navigation Styles */
.bg-gradient-main {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

header nav a {
  color: white !important; /* Force visibility on dark gradient */
  transition: color 0.2s ease;
}

header nav a:hover {
  color: var(--accent-cyan) !important;
}

/* User Menu */
.user-menu {
  position: relative;
  display: inline-block;
}

.user-menu-button {
  background-color: var(--bg-accent);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}

.user-menu-button:hover {
  background-color: var(--accent-cyan);
  color: var(--text-inverse);
}

.user-menu-dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 8px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  z-index: 1000;
}

.user-menu-dropdown.show {
  display: block;
}

.user-menu-item,
.user-menu-item i,
.user-menu-item span {
  color: var(--text-primary) !important;
}

.user-menu-item {
  display: block;
  width: 100%;
  padding: 12px 16px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s ease;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.user-menu-item:last-child {
  border-bottom: none;
}

.user-menu-item:hover,
.user-menu-item:hover i,
.user-menu-item:hover span {
  color: var(--text-primary) !important;
}

.user-menu-item:hover {
  background-color: var(--bg-accent);
}

/* Flow steps for dark mode */
[data-theme="dark"] .flow-step {
  background-color: var(--bg-card);
  border-color: var(--accent-blue);
}

/* Chart container adjustments */
[data-theme="dark"] .chart-container {
  filter: brightness(0.9);
}

/* Special sections */
[data-theme="dark"] .bg-blue-50 {
  background-color: #1e3a5f !important;
}

[data-theme="dark"] .bg-red-50 {
  background-color: #4a1a1a !important;
}

[data-theme="dark"] .text-red-700 {
  color: #fca5a5 !important;
}

[data-theme="dark"] .text-red-800 {
  color: #fecaca !important;
}

[data-theme="dark"] .text-blue-800 {
  color: #93c5fd !important;
}

/* Mobile adjustments */
@media (max-width: 768px) {
  html {
    font-size: 18px;
    /* Approximately 2pt larger than default 16px */
  }
}

/* Mobile Menu System */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  top: 72px;
  /* Header height */
  background-color: var(--bg-primary);
  z-index: 40;
  padding: 1.5rem;
  overflow-y: auto;
  border-top: 1px solid var(--border-color);
}

.mobile-menu:not(.hidden) {
  display: block;
}

.mobile-nav-link {
  display: block;
  padding: 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.2s;
}

.mobile-nav-link:hover {
  background-color: var(--bg-accent);
  color: var(--accent-cyan);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 767px) {
  .mobile-menu-btn {
    display: block;
  }
}

/* Component Styles */
.card-hover {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  transition: all 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-blue);
}

/* Flowchart Styles */
.flow-step {
  background-color: var(--bg-card);
  padding: 1rem;
  border-radius: 0.5rem;
  border-left: 4px solid var(--accent-blue);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: all 0.3s ease;
  color: var(--text-primary);
}

.flow-step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.flow-arrow {
  display: flex;
  justify-content: center;
  padding: 0.5rem 0;
  color: var(--text-muted);
}

/* Scrollbar theming */
[data-theme="dark"] ::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: var(--accent-cyan);
}