/* Theme System - Shared across all pages */

:root {
  /* Dark Mode (Default) */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-accent: #00d4ff;
  --accent-primary: #00d4ff;
  --accent-secondary: #ff6b6b;
  --accent-tertiary: #4ecdc4;
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #4ecdc4 100%);
  --gradient-secondary: linear-gradient(135deg, #ff6b6b 0%, #ffa726 100%);
  --gradient-bg: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
  --shadow-primary: 0 20px 40px rgba(0, 212, 255, 0.1);
  --shadow-secondary: 0 10px 30px rgba(0, 0, 0, 0.3);
  --border-radius: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Theme transition */
  --theme-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Mode */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-accent: #007bff;
  --accent-primary: #007bff;
  --accent-secondary: #dc3545;
  --accent-tertiary: #28a745;
  --gradient-primary: linear-gradient(135deg, #007bff 0%, #28a745 100%);
  --gradient-secondary: linear-gradient(135deg, #dc3545 0%, #fd7e14 100%);
  --gradient-bg: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  --shadow-primary: 0 20px 40px rgba(0, 123, 255, 0.1);
  --shadow-secondary: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Theme Toggle Styles */
.theme-toggle {
  position: relative;
  width: 50px;
  height: 25px;
  background: var(--bg-tertiary);
  border-radius: 25px;
  border: 2px solid var(--accent-primary);
  cursor: pointer;
  transition: var(--theme-transition);
  margin-left: 20px;
}

.theme-toggle::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 17px;
  height: 17px;
  background: var(--accent-primary);
  border-radius: 50%;
  transition: var(--theme-transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle::after {
  content: '🌙';
  position: absolute;
  top: 50%;
  left: 6px;
  transform: translateY(-50%);
  font-size: 12px;
  transition: var(--theme-transition);
  opacity: 1;
}

[data-theme="light"] .theme-toggle::before {
  transform: translateX(25px);
  background: var(--accent-primary);
}

[data-theme="light"] .theme-toggle::after {
  content: '☀️';
  left: 6px;
  opacity: 0;
}

[data-theme="light"] .theme-toggle::before::after {
  content: '☀️';
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-50%);
  font-size: 12px;
  opacity: 1;
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

/* Navigation container with theme toggle */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Screen Reader Only */
.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 Design for Theme Toggle */
@media (max-width: 768px) {
  .nav-actions {
    gap: 15px;
  }

  .theme-toggle {
    margin-left: 0;
    width: 45px;
    height: 22px;
  }

  .theme-toggle::before {
    width: 15px;
    height: 15px;
  }

  [data-theme="light"] .theme-toggle::before {
    transform: translateX(23px);
  }
}

/* Theme transition for all elements */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Override for specific elements that shouldn't transition */
.no-transition {
  transition: none !important;
}

/* Theme-aware scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-accent);
}

/* Theme-aware selection */
::selection {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

[data-theme="light"] ::selection {
  background: var(--accent-primary);
  color: var(--bg-primary);
}