/**
 * Interactive Components Styles
 * Reusable interactive elements for resource pages
 */

/* Table of Contents */
.table-of-contents {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-primary);
    margin-bottom: var(--spacing-xl);
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    z-index: var(--z-sticky);
}

.table-of-contents h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0 0 var(--spacing-md) 0;
    color: var(--color-primary);
}

.table-of-contents ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.table-of-contents li {
    margin-bottom: var(--spacing-xs);
}

.table-of-contents a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    display: block;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.table-of-contents a:hover,
.table-of-contents a.active {
    color: var(--color-primary);
    background: rgba(74, 144, 226, 0.1);
    padding-left: var(--spacing-md);
}

.table-of-contents li.level-2 {
    padding-left: var(--spacing-md);
}

.table-of-contents li.level-3 {
    padding-left: var(--spacing-lg);
    font-size: var(--font-size-xs);
}

/* Reading Progress Indicator */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    z-index: var(--z-tooltip);
    transition: width 0.1s ease-out;
    box-shadow: 0 0 10px rgba(74, 144, 226, 0.5);
}

/* Quiz Component */
.quiz-container {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-primary);
    margin: var(--spacing-xl) 0;
}

.quiz-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.quiz-header h3 {
    font-size: var(--font-size-3xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.quiz-progress {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.quiz-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    transition: width var(--transition-base);
    border-radius: var(--radius-sm);
}

.quiz-question {
    margin-bottom: var(--spacing-xl);
}

.quiz-question h4 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.quiz-option {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: left;
}

.quiz-option:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-primary);
    transform: translateX(5px);
}

.quiz-option.selected {
    background: rgba(74, 144, 226, 0.2);
    border-color: var(--color-primary);
}

.quiz-option.correct {
    background: rgba(46, 204, 113, 0.2);
    border-color: var(--color-secondary);
}

.quiz-option.incorrect {
    background: rgba(231, 76, 60, 0.2);
    border-color: var(--color-danger);
}

.quiz-option:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.quiz-feedback {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: none;
}

.quiz-feedback.show {
    display: block;
    animation: fadeInUp 0.3s ease-out;
}

.quiz-feedback.correct {
    background: rgba(46, 204, 113, 0.1);
    border-left: 4px solid var(--color-secondary);
    color: var(--color-secondary);
}

.quiz-feedback.incorrect {
    background: rgba(231, 76, 60, 0.1);
    border-left: 4px solid var(--color-danger);
    color: var(--color-danger);
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xl);
    gap: var(--spacing-md);
}

.quiz-results {
    text-align: center;
    padding: var(--spacing-xl);
}

.quiz-results h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.quiz-score {
    font-size: var(--font-size-5xl);
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: var(--spacing-lg) 0;
}

/* Tool Components */
.tool-container {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-primary);
    margin: var(--spacing-xl) 0;
}

.tool-header {
    margin-bottom: var(--spacing-lg);
}

.tool-header h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.tool-input {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-secondary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-md);
}

.tool-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.08);
}

.tool-output {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
    min-height: 100px;
}

.tool-result-item {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    border-left: 3px solid var(--color-primary);
    padding-left: var(--spacing-md);
}

/* Visualization Components */
.visualization-container {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-primary);
    margin: var(--spacing-xl) 0;
    overflow-x: auto;
}

.flowchart {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.flowchart-step {
    background: rgba(74, 144, 226, 0.1);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    min-width: 200px;
    text-align: center;
    position: relative;
}

.flowchart-step::after {
    content: '↓';
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
}

.flowchart-step:last-child::after {
    display: none;
}

.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-lg);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -var(--spacing-xl);
    top: 5px;
    width: 12px;
    height: 12px;
    background: var(--color-primary);
    border-radius: 50%;
    border: 3px solid var(--bg-primary);
}

.timeline-date {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-content {
    color: var(--text-secondary);
}

/* Expandable Sections */
.expandable-section {
    margin: var(--spacing-lg) 0;
}

.expandable-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.expandable-header:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-primary);
}

.expandable-header h4 {
    margin: 0;
    color: var(--text-primary);
}

.expandable-icon {
    transition: transform var(--transition-base);
    color: var(--color-primary);
}

.expandable-section.expanded .expandable-icon {
    transform: rotate(180deg);
}

.expandable-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
    padding: 0 var(--spacing-md);
}

.expandable-section.expanded .expandable-content {
    max-height: 2000px;
    padding: var(--spacing-md);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* Share Buttons */
.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
    flex-wrap: wrap;
}

.share-button,
.share-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.share-button::before,
.share-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.share-button:hover::before,
.share-btn:hover::before {
    width: 300px;
    height: 300px;
}

.share-button:hover,
.share-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-primary);
    color: var(--text-primary);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.share-button:active,
.share-btn:active {
    transform: translateY(-1px) scale(1.02);
}

.share-button:focus,
.share-btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Related Resources */
.related-resources {
    margin: var(--spacing-xl) 0;
}

.related-resources a {
    display: block;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    border: 2px solid var(--border-secondary);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.related-resources a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.related-resources a:hover::before {
    left: 100%;
}

.related-resources a:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-primary);
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.related-resources a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.related-resources h4 {
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-base);
}

.related-resources a:hover h4 {
    color: var(--color-primary);
}

/* Reading Time */
.reading-time {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin: var(--spacing-sm) 0;
}

.reading-time::before {
    content: '⏱';
    font-size: var(--font-size-base);
}

/* Tooltips */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.9);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    z-index: var(--z-tooltip);
    margin-bottom: var(--spacing-xs);
    pointer-events: none;
    animation: fadeInUp 0.2s ease-out;
}

[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: calc(100% - 5px);
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.9);
    z-index: var(--z-tooltip);
    pointer-events: none;
}

/* Smooth Scroll Enhancement */
html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Keyboard Navigation */
.keyboard-shortcut {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    font-size: var(--font-size-xs);
    font-family: monospace;
    border: 1px solid var(--border-secondary);
}

/* Focus Visible */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Print Styles */
@media print {
    .table-of-contents,
    .share-buttons,
    .back-to-top,
    .reading-progress,
    .quiz-container,
    .tool-container {
        display: none !important;
    }
    
    .resource-page,
    .legal-page {
        background: white !important;
        color: black !important;
    }
    
    a {
        color: #000 !important;
        text-decoration: underline !important;
    }
    
    h1, h2, h3, h4, h5, h6 {
        color: #000 !important;
        page-break-after: avoid;
    }
    
    .related-resources {
        page-break-inside: avoid;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .table-of-contents {
        position: relative;
        top: 0;
        max-height: none;
    }
    
    .quiz-container,
    .tool-container,
    .visualization-container {
        padding: var(--spacing-md);
    }
    
    .back-to-top {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 45px;
        height: 45px;
    }
}