/* ============================================
   Vibe Coding Ethics Explorer - Styles
   Premium Dark Theme with Glassmorphism
   ============================================ */

/* ============================================
   CSS Variables - Design Tokens
   ============================================ */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0a0e27;
    --color-bg-secondary: #1a1535;
    --color-bg-tertiary: #252140;
    --color-bg-panel: rgba(37, 33, 64, 0.7);
    --color-bg-glass: rgba(255, 255, 255, 0.05);

    /* Accent Colors */
    --color-accent-blue: #00d4ff;
    --color-accent-purple: #a855f7;
    --color-accent-coral: #ff6b6b;
    --color-accent-green: #4ade80;
    --color-accent-yellow: #fbbf24;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #b4b9d6;
    --color-text-muted: #6b7099;
    --color-text-accent: var(--color-accent-blue);

    /* Node Colors */
    --color-node-reddit: var(--color-accent-coral);
    --color-node-source: var(--color-accent-blue);
    --color-connection: rgba(168, 85, 247, 0.4);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);

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

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
}

/* ============================================
   Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: 5px;
}

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

/* ============================================
   Header
   ============================================ */
.app-header {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--color-bg-panel);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
}

.app-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-accent {
    color: var(--color-accent-coral);
    -webkit-text-fill-color: var(--color-accent-coral);
}

.app-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    font-weight: 300;
}

.research-question {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-bg-glass);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.research-question h2 {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.research-question p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   Main Layout
   ============================================ */
.app-main {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    max-width: 1800px;
    margin: 0 auto;
    min-height: calc(100vh - 250px);
}

/* ============================================
   Control Panel
   ============================================ */
.control-panel {
    background: var(--color-bg-panel);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
    height: fit-content;
    position: sticky;
    top: var(--spacing-lg);
}

.panel-section {
    margin-bottom: var(--spacing-xl);
}

.panel-section:last-child {
    margin-bottom: 0;
}

.panel-section h3 {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

/* Mode Switcher */
.mode-switcher {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mode-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
}

.mode-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-accent-blue);
    color: var(--color-text-primary);
    transform: translateX(4px);
}

.mode-btn.active {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(168, 85, 247, 0.2));
    border-color: var(--color-accent-blue);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-glow);
}

.mode-icon {
    font-size: var(--font-size-xl);
}

.mode-label {
    font-weight: 500;
}

/* Search Input */
.search-input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

/* Filters */
.filter-group {
    margin-top: var(--spacing-md);
}

.filter-label {
    display: block;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--color-accent-blue);
    cursor: pointer;
}

/* Theme Tags */
.theme-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    max-height: 200px;
    overflow-y: auto;
}

.theme-tag {
    padding: 0.4rem 0.8rem;
    background: var(--color-bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-tag:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
}

.theme-tag.active {
    background: var(--color-accent-purple);
    color: white;
    border-color: var(--color-accent-purple);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    width: 100%;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg-glass);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-height: 80px;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.stat-clickable {
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    font-family: inherit;
    box-sizing: border-box;
    /* Reset button defaults */
    background: var(--color-bg-glass);
    color: inherit;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-clickable:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--color-accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.2);
}

.stat-clickable:active {
    transform: translateY(0);
}

.stat-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.55rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    line-height: 1.1;
}

/* ============================================
   Visualization Container
   ============================================ */
.viz-container {
    position: relative;
    background: var(--color-bg-panel);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    min-height: 700px;
}

.viz-view {
    display: none;
    width: 100%;
    height: 100%;
    min-height: 700px;
}

.viz-view.active {
    display: block;
}

/* Network SVG */
#network-svg {
    width: 100%;
    height: 100%;
    min-height: 700px;
}

/* Visualization Controls */
.viz-controls {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-sm);
}

.control-btn {
    width: 40px;
    height: 40px;
    background: var(--color-bg-panel);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background: var(--color-accent-blue);
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

/* View Placeholder */
.view-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: var(--spacing-xxl);
    text-align: center;
}

.placeholder-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.view-placeholder h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.view-placeholder p {
    color: var(--color-text-muted);
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--color-accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-lg);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-overlay p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

/* ============================================
   Sources Library
   ============================================ */
.library-container {
    padding: var(--spacing-xxl) var(--spacing-xl);
    overflow-y: auto;
    max-height: 700px;
}

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

.library-header h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.library-header p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

.sources-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.source-category {
    background: var(--color-bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.category-icon {
    font-size: var(--font-size-2xl);
}

.category-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.category-count {
    margin-left: auto;
    padding: 0.4rem 0.8rem;
    background: var(--color-accent-purple);
    color: white;
    border-radius: 1rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.source-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.source-card {
    background: var(--color-bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.source-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-accent-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.source-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.source-file-icon {
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.source-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.4;
    flex-grow: 1;
}

.source-card-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.source-format-badge {
    padding: 0.3rem 0.6rem;
    background: var(--color-bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    font-weight: 600;
}

.source-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: var(--spacing-md);
    color: var(--color-accent-blue);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.source-card-link:hover {
    color: var(--color-accent-purple);
}

/* ============================================
   Detail Panel
   ============================================ */
.detail-panel {
    position: fixed;
    right: 0;
    top: 0;
    width: 400px;
    height: 100vh;
    background: var(--color-bg-panel);
    backdrop-filter: blur(20px);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    z-index: 900;
    overflow-y: auto;
}

.detail-panel.visible {
    transform: translateX(0);
}

.close-btn {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.close-btn:hover {
    background: var(--color-accent-coral);
    border-color: var(--color-accent-coral);
}

.detail-content {
    padding: var(--spacing-xxl) var(--spacing-lg);
}

.detail-placeholder {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--color-text-muted);
}

/* ============================================
   Footer
   ============================================ */
.app-footer {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--color-bg-panel);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-content p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.footer-note {
    color: var(--color-text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1200px) {
    .app-main {
        grid-template-columns: 1fr;
    }

    .control-panel {
        position: static;
    }

    .detail-panel {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .app-title {
        font-size: var(--font-size-2xl);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .viz-container {
        min-height: 500px;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeIn 0.5s ease forwards;
}