/* Theme System - Light/Dark Mode Support */

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1001;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    box-shadow: 0 2px 8px var(--shadow-light);
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
    box-shadow: 0 4px 12px var(--shadow-medium);
    transform: scale(1.05);
}

.theme-toggle-icon {
    font-size: 1.2rem;
    color: var(--text-color);
    transition: transform var(--transition-speed) ease;
}

.theme-toggle:hover .theme-toggle-icon {
    transform: rotate(180deg);
}

/* Light Theme Specific Styles */
[data-theme="light"] {
    --bg-color: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-color: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --border-color: #dee2e6;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.15);
    --shadow-heavy: rgba(0, 0, 0, 0.25);
    --code-bg: #f8f9fa;
    --code-border: #e9ecef;
    --highlight-bg: #fff3cd;
    --highlight-border: #ffeaa7;
}

/* Dark Theme Specific Styles */
[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-color: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #808080;
    --primary-color: #4dabf7;
    --primary-hover: #339af0;
    --success-color: #51cf66;
    --warning-color: #ffd43b;
    --danger-color: #ff6b6b;
    --border-color: #404040;
    --shadow-light: rgba(255, 255, 255, 0.1);
    --shadow-medium: rgba(255, 255, 255, 0.15);
    --shadow-heavy: rgba(255, 255, 255, 0.25);
    --code-bg: #2d2d2d;
    --code-border: #404040;
    --highlight-bg: #3d3d00;
    --highlight-border: #666600;
}

/* Theme-specific component adjustments */

/* Code Editor Themes */
[data-theme="light"] .code-editor {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    color: #212529;
}

[data-theme="dark"] .code-editor {
    background-color: #2d2d2d;
    border: 1px solid #404040;
    color: #ffffff;
}

/* Syntax Highlighting for Light Theme */
[data-theme="light"] .code-editor .token.comment {
    color: #6c757d;
}

[data-theme="light"] .code-editor .token.keyword {
    color: #007bff;
    font-weight: bold;
}

[data-theme="light"] .code-editor .token.string {
    color: #28a745;
}

[data-theme="light"] .code-editor .token.number {
    color: #dc3545;
}

[data-theme="light"] .code-editor .token.function {
    color: #6f42c1;
}

[data-theme="light"] .code-editor .token.tag {
    color: #e83e8c;
}

[data-theme="light"] .code-editor .token.attr-name {
    color: #fd7e14;
}

[data-theme="light"] .code-editor .token.attr-value {
    color: #28a745;
}

/* Syntax Highlighting for Dark Theme */
[data-theme="dark"] .code-editor .token.comment {
    color: #b3b3b3;
}

[data-theme="dark"] .code-editor .token.keyword {
    color: #4dabf7;
    font-weight: bold;
}

[data-theme="dark"] .code-editor .token.string {
    color: #51cf66;
}

[data-theme="dark"] .code-editor .token.number {
    color: #ff6b6b;
}

[data-theme="dark"] .code-editor .token.function {
    color: #9775fa;
}

[data-theme="dark"] .code-editor .token.tag {
    color: #ff8cc8;
}

[data-theme="dark"] .code-editor .token.attr-name {
    color: #ffa94d;
}

[data-theme="dark"] .code-editor .token.attr-value {
    color: #51cf66;
}

/* Quiz Component Themes */
[data-theme="light"] .quiz-container {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
}

[data-theme="dark"] .quiz-container {
    background-color: #2d2d2d;
    border: 1px solid #404040;
}

[data-theme="light"] .quiz-option {
    background-color: #ffffff;
    border: 1px solid #dee2e6;
}

[data-theme="light"] .quiz-option:hover {
    background-color: #e9ecef;
}

[data-theme="light"] .quiz-option.correct {
    background-color: #d4edda;
    border-color: #c3e6cb;
}

[data-theme="light"] .quiz-option.incorrect {
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

[data-theme="dark"] .quiz-option {
    background-color: #404040;
    border: 1px solid #555555;
}

[data-theme="dark"] .quiz-option:hover {
    background-color: #555555;
}

[data-theme="dark"] .quiz-option.correct {
    background-color: #1e4d2b;
    border-color: #2d7a3d;
}

[data-theme="dark"] .quiz-option.incorrect {
    background-color: #4d1e1e;
    border-color: #7a2d2d;
}

/* Navigation Themes */
[data-theme="light"] .sidebar {
    background-color: #f8f9fa;
    border-right: 1px solid #dee2e6;
}

[data-theme="dark"] .sidebar {
    background-color: #2d2d2d;
    border-right: 1px solid #404040;
}

[data-theme="light"] .nav-link {
    color: #495057;
}

[data-theme="light"] .nav-link:hover {
    color: #007bff;
    background-color: #e9ecef;
}

[data-theme="light"] .nav-link.active {
    color: #007bff;
    background-color: #e3f2fd;
    border-right: 3px solid #007bff;
}

[data-theme="dark"] .nav-link {
    color: #b3b3b3;
}

[data-theme="dark"] .nav-link:hover {
    color: #4dabf7;
    background-color: #404040;
}

[data-theme="dark"] .nav-link.active {
    color: #4dabf7;
    background-color: #1a3a52;
    border-right: 3px solid #4dabf7;
}

/* Header Themes */
[data-theme="light"] .header {
    background-color: #ffffff;
    border-bottom: 1px solid #dee2e6;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .header {
    background-color: #1a1a1a;
    border-bottom: 1px solid #404040;
    box-shadow: 0 2px 4px rgba(255, 255, 255, 0.1);
}

/* Progress Bar Themes */
[data-theme="light"] .progress {
    background-color: #e9ecef;
}

[data-theme="dark"] .progress {
    background-color: #404040;
}

/* Scrollbar Themes */
[data-theme="light"] ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

[data-theme="light"] ::-webkit-scrollbar-track {
    background: #f1f1f1;
}

[data-theme="light"] ::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

[data-theme="dark"] ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
    background: #2d2d2d;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #555555;
    border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: #666666;
}

/* Theme Transition */
* {
    transition: background-color var(--transition-speed) ease,
                color var(--transition-speed) ease,
                border-color var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
    
    .theme-toggle:hover .theme-toggle-icon {
        transform: none;
    }
}