:root {
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-hover: #1a1a25;
    --border: #2a2a3a;
    --text: #e0e0e8;
    --text-dim: #888890;
    --accent: #6b8afd;
    --accent-hover: #8aa4ff;
    --purple: #a78bfa;
    --success: #4ade80;
    --warning: #fbbf24;
    --error: #f87171;
    --glow: rgba(107, 138, 253, 0.3);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated stars background */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background:
        radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 20% 50%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 30% 30%, rgba(255,255,255,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 40% 70%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 50% 10%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 60% 60%, rgba(255,255,255,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 70% 40%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 80% 80%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 90% 20%, rgba(255,255,255,0.7) 0%, transparent 100%),
        radial-gradient(2px 2px at 15% 85%, rgba(167,139,250,0.5) 0%, transparent 100%),
        radial-gradient(2px 2px at 85% 15%, rgba(107,138,253,0.5) 0%, transparent 100%);
    animation: twinkle 8s ease-in-out infinite;
    z-index: 0;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

/* Header */
header {
    margin-bottom: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 64px;
    height: 64px;
    animation: orbit 20s linear infinite;
}

@keyframes orbit {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, var(--purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.tagline {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin: 0;
}

/* Seed Section */
.seed-section {
    margin-bottom: 2rem;
}

.seed-card {
    background: linear-gradient(135deg, rgba(107, 138, 253, 0.1) 0%, rgba(167, 139, 250, 0.1) 100%);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.seed-icon {
    width: 48px;
    height: 48px;
    color: var(--accent);
    flex-shrink: 0;
}

.seed-icon svg {
    width: 100%;
    height: 100%;
}

.seed-input-group {
    flex: 1;
    min-width: 300px;
}

.seed-input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.seed-input-row {
    display: flex;
    gap: 0.75rem;
}

.seed-input-row input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.875rem 1rem;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.seed-input-row input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--glow);
}

.seed-hint {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-dim);
}

.seed-hash {
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.8rem;
    color: var(--text-dim);
    opacity: 0.7;
    word-break: break-all;
    max-width: 200px;
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--accent) 0%, var(--purple) 100%);
    color: white;
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary svg {
    width: 18px;
    height: 18px;
}

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

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

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
    overflow-x: auto;
}

.tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    color: var(--text-dim);
    padding: 1rem 1.25rem;
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
    white-space: nowrap;
}

.tab svg {
    width: 18px;
    height: 18px;
}

.tab:hover {
    color: var(--text);
    background: transparent;
}

.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: transparent;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.card-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin: 0;
}

.badge {
    background: rgba(107, 138, 253, 0.15);
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Overview Grid */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.overview-card.span-2 {
    grid-column: span 2;
}

/* Loading placeholder */
.loading-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--text-dim);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

/* Info rows */
.world-info, .place-info, .persona-traits {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.625rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    color: var(--text-dim);
    font-size: 0.9rem;
}

.info-value {
    font-family: 'SF Mono', 'Consolas', monospace;
    color: var(--text);
    text-align: right;
}

.info-value.highlight {
    color: var(--accent);
}

/* Quick Stats */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.stat-item {
    background: var(--bg);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    font-family: 'SF Mono', 'Consolas', monospace;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 0.25rem;
}

/* Baseline Preview */
.baseline-preview {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.baseline-item {
    background: var(--bg);
    border-radius: 12px;
    padding: 1.25rem;
}

.baseline-item h3 {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.baseline-content {
    font-size: 0.9rem;
}

/* Explorer Header */
.explorer-header {
    margin-bottom: 1.5rem;
}

.explorer-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.index-navigator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.5rem;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}

.nav-btn:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.nav-btn svg {
    width: 20px;
    height: 20px;
}

.index-input-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 0.5rem;
}

.index-input-group label {
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.index-input-group input {
    width: 100px;
    text-align: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.5rem;
    font-size: 1rem;
    color: var(--text);
    font-family: 'SF Mono', 'Consolas', monospace;
}

.index-input-group input:focus {
    outline: none;
    border-color: var(--accent);
}

/* Place Detail Card */
.place-detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    padding: 2rem;
    margin-bottom: 1.5rem;
    min-height: 300px;
}

.place-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.planet-display {
    position: relative;
    width: 200px;
    height: 200px;
}

.orbit {
    position: absolute;
    border: 1px dashed rgba(107, 138, 253, 0.3);
    border-radius: 50%;
}

.orbit-1 {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    animation: orbitSpin 30s linear infinite;
}

.orbit-2 {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    animation: orbitSpin 20s linear infinite reverse;
}

@keyframes orbitSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.star-core {
    position: absolute;
    width: 40px;
    height: 40px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: radial-gradient(circle, #fff9c4 0%, #ffc107 50%, #ff9800 100%);
    box-shadow: 0 0 30px #ffc107, 0 0 60px rgba(255, 193, 7, 0.5);
    animation: starGlow 3s ease-in-out infinite;
}

@keyframes starGlow {
    0%, 100% { box-shadow: 0 0 30px #ffc107, 0 0 60px rgba(255, 193, 7, 0.5); }
    50% { box-shadow: 0 0 40px #ffc107, 0 0 80px rgba(255, 193, 7, 0.7); }
}

.planet {
    position: absolute;
    width: 60px;
    height: 60px;
    top: 10%;
    right: 10%;
    border-radius: 50%;
    background: linear-gradient(135deg, #4fc3f7 0%, #0288d1 50%, #01579b 100%);
    box-shadow: inset -10px -10px 20px rgba(0,0,0,0.4), 0 0 20px rgba(79, 195, 247, 0.3);
}

.planet::after {
    content: '';
    position: absolute;
    width: 30%;
    height: 20%;
    top: 20%;
    left: 20%;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
}

.place-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.place-info .placeholder {
    color: var(--text-dim);
    font-style: italic;
}

/* Place Spectrum */
.place-spectrum, .persona-spectrum {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
}

.spectrum-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.2s;
}

.spectrum-item:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.spectrum-item.active {
    border-color: var(--accent);
    background: rgba(107, 138, 253, 0.1);
}

.spectrum-index {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-bottom: 0.25rem;
}

.spectrum-type {
    font-weight: 600;
    color: var(--text);
    font-size: 0.9rem;
}

.spectrum-sub {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 0.25rem;
}

/* Persona Detail Grid */
.persona-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.persona-main-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
}

.persona-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.persona-avatar {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--purple) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.persona-avatar svg {
    width: 32px;
    height: 32px;
}

.persona-title h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.persona-title p {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin: 0.25rem 0 0 0;
}

/* Big Five */
.big-five-radar {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1rem;
}

#big-five-canvas {
    max-width: 100%;
}

.big-five-bars {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.trait-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.trait-label {
    width: 120px;
    font-size: 0.85rem;
    color: var(--text-dim);
    flex-shrink: 0;
}

.trait-bar {
    flex: 1;
    height: 8px;
    background: var(--bg);
    border-radius: 4px;
    overflow: hidden;
}

.trait-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--purple));
    border-radius: 4px;
    transition: width 0.5s ease;
}

.trait-value {
    width: 45px;
    text-align: right;
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.85rem;
    color: var(--text);
    flex-shrink: 0;
}

/* Events */
.events-controls {
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
}

.event-control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.event-control-group label {
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.event-control-group input,
.event-control-group select {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
}

.event-control-group input:focus,
.event-control-group select:focus {
    outline: none;
    border-color: var(--accent);
}

#event-year {
    width: 100px;
}

#event-count {
    width: 80px;
}

#event-scale {
    min-width: 120px;
}

.events-controls .btn-primary {
    margin-left: auto;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--purple));
    border-radius: 1px;
}

.timeline .placeholder {
    color: var(--text-dim);
    font-style: italic;
    padding: 2rem;
    text-align: center;
}

.timeline-event {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    margin-left: 1rem;
}

.timeline-event::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 1.5rem;
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    border: 3px solid var(--bg);
}

.timeline-event::after {
    content: '';
    position: absolute;
    left: -1rem;
    top: 1.75rem;
    width: 1rem;
    height: 2px;
    background: var(--border);
}

.event-type-badge {
    display: inline-block;
    background: rgba(107, 138, 253, 0.15);
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.timeline-event h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.event-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-dim);
    align-items: center;
}

.significance-bar {
    width: 80px;
    height: 6px;
    background: var(--bg);
    border-radius: 3px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
    margin: 0 0.5rem;
}

.significance-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--purple));
    border-radius: 3px;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.9rem;
}

footer a {
    color: var(--accent);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 900px) {
    .overview-grid {
        grid-template-columns: 1fr;
    }

    .overview-card.span-2 {
        grid-column: span 1;
    }

    .place-detail-card {
        grid-template-columns: 1fr;
    }

    .place-visual {
        order: -1;
    }

    .persona-detail-grid {
        grid-template-columns: 1fr;
    }

    .baseline-preview {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    .logo h1 {
        font-size: 1.75rem;
    }

    .seed-card {
        padding: 1.25rem;
    }

    .seed-input-row {
        flex-direction: column;
    }

    .explorer-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .index-navigator {
        justify-content: center;
    }

    .events-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .events-controls .btn-primary {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }

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

    .tab span {
        display: none;
    }

    .tab {
        padding: 1rem;
    }
}