/* ============================================
   Embedding Explorer - Matches karanpraharaj.com
   Dark neon theme ONLY inside visualization
   ============================================ */

:root {
    /* Site palette (matches main site) */
    --color-bg: #f8f7f4;
    --color-text: #1a1a1a;
    --color-text-muted: #666660;
    --color-border: #e8e6e1;

    /* Visualization neon palette */
    --neon-cyan: #00f5ff;
    --neon-magenta: #ff00ff;
    --neon-purple: #bf00ff;
    --neon-pink: #ff0080;
    --neon-blue: #0080ff;
    --neon-green: #00ff80;
    --neon-orange: #ff8000;
    --neon-yellow: #ffff00;

    /* Typography */
    --font-serif: 'EB Garamond', Georgia, 'Times New Roman', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --max-width: 900px;
    --spacing-page: clamp(1.5rem, 5vw, 4rem);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 18px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-serif);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header (matches main site)
   ============================================ */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem var(--spacing-page);
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav a:hover {
    color: var(--color-text);
}

/* ============================================
   Divider
   ============================================ */
.divider {
    height: 1px;
    background: var(--color-border);
    max-width: 1200px;
    width: calc(100% - var(--spacing-page) * 2);
    margin: 0 auto;
}

/* ============================================
   Main Content
   ============================================ */
.main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-page);
}

.main-top {
    align-items: flex-start;
    padding-top: 3rem;
}

/* ============================================
   Explorer Page
   ============================================ */
.explorer-page {
    max-width: var(--max-width);
    width: 100%;
}

.explorer-page h1 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.page-intro {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

/* ============================================
   Controls (site style)
   ============================================ */
.explorer-controls {
    margin-bottom: 1.5rem;
}

.control-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: flex-end;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.control-label {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.control-select {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    padding: 0.6rem 0.8rem;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text);
    cursor: pointer;
    min-width: 160px;
}

.control-select:focus {
    outline: none;
    border-color: var(--color-text-muted);
}

.search-group {
    flex: 1;
    min-width: 200px;
}

.search-row {
    display: flex;
    gap: 0.5rem;
}

.search-input {
    flex: 1;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    padding: 0.6rem 0.8rem;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-text-muted);
}

.search-btn {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.6rem 1rem;
    background: var(--color-text);
    color: var(--color-bg);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.search-btn:hover {
    opacity: 0.85;
}

/* ============================================
   Visualization Wrapper
   ============================================ */
.visualization-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

/* ============================================
   Visualization Container (DARK NEON THEME)
   ============================================ */
.visualization-container {
    position: relative;
    background: #0a0a0f;
    border-radius: 8px;
    overflow: hidden;
    height: 500px;
}

#canvas-container {
    width: 100%;
    height: 100%;
}

#canvas-container canvas {
    display: block;
}

/* Legend inside visualization */
.viz-legend {
    position: absolute;
    bottom: 16px;
    left: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(10px);
    padding: 10px 14px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    box-shadow: 0 0 8px currentColor;
}

.legend-label {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Hint text */
.viz-hint {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-sans);
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.4);
    background: rgba(10, 10, 15, 0.7);
    padding: 6px 12px;
    border-radius: 4px;
    pointer-events: none;
}

/* ============================================
   Tooltip (dark theme, appears over viz)
   ============================================ */
.tooltip {
    position: fixed;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 14px;
    max-width: 300px;
    pointer-events: none;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.15s ease;
    z-index: 1000;
}

.tooltip.visible {
    opacity: 1;
    transform: translateY(0);
}

.tooltip-subject {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--neon-cyan);
}

.tooltip-meta {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 8px;
}

.tooltip-preview {
    font-family: var(--font-serif);
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   Detail Panel (site style)
   ============================================ */
.detail-panel {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.25rem;
    height: 500px;
    overflow-y: auto;
}

.detail-placeholder {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.detail-placeholder p {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.detail-header {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.detail-header h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.detail-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-meta span {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.detail-meta strong {
    color: var(--color-text);
    font-weight: 500;
}

.detail-body {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--color-text);
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.neighbors-section h4 {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
}

.neighbor-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: var(--color-bg);
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.neighbor-item:hover {
    background: var(--color-border);
}

.neighbor-subject {
    font-family: var(--font-serif);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.neighbor-score {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

/* ============================================
   Explanation Section
   ============================================ */
.explanation {
    max-width: 680px;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.explanation h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

.explanation h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 500;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.explanation p {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    line-height: 1.75;
    margin-bottom: 1rem;
}

.explanation ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.explanation li {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    line-height: 1.75;
    margin-bottom: 0.5rem;
}

.explanation strong {
    font-weight: 500;
}

/* ============================================
   Footer (matches main site)
   ============================================ */
.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem var(--spacing-page);
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

.copyright {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
}

.footer-nav a {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-nav a:hover {
    color: var(--color-text);
}

/* ============================================
   Loading Overlay
   ============================================ */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-text);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

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

.loading-overlay p {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 800px) {
    .visualization-wrapper {
        grid-template-columns: 1fr;
    }

    .visualization-container {
        height: 400px;
    }

    .detail-panel {
        height: auto;
        min-height: 200px;
    }
}

@media (max-width: 600px) {
    html {
        font-size: 17px;
    }

    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .control-row {
        flex-direction: column;
        align-items: stretch;
    }

    .control-select,
    .search-input {
        width: 100%;
    }

    .visualization-container {
        height: 350px;
    }
}