/** * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 * 
 * Era Timeline Visualization Stylesheet
 * Pure HTML/CSS editorial-style timeline for ancestry data by Era, Country, and Sample.
 * Replaces the sunburst chart with a cleaner, more readable design.
 */

/* ========================================
   CSS Variables - Inherits Dark Theme
   ======================================== */
.dar-era-timeline {
    --era-bg: var(--dar-chromo-slate, #1A1C1E);
    --era-card-bg: var(--dar-chromo-stone, #2A2D31);
    --era-obsidian: var(--dar-chromo-obsidian, #0D0D0F);
    --era-accent: var(--dar-chromo-teal, #237465);
    --era-text: var(--dar-chromo-bone, #E8E4DC);
    --era-text-muted: var(--dar-chromo-sand, #A89F91);
    --era-border: var(--dar-chromo-border, rgba(168, 159, 145, 0.15));
    --era-border-light: var(--dar-chromo-border-light, rgba(168, 159, 145, 0.08));
    --era-ivory: var(--dar-chromo-ivory, #F5F3EF);
    --era-amber: var(--dar-chromo-amber, #C4956A);
    --era-copper: var(--dar-chromo-copper, #8B6D4F);
    
    --era-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --era-transition-fast: 0.15s ease-out;
}

/* ========================================
   Main Container
   ======================================== */
.dar-era-timeline {
    background: var(--era-bg);
    border-radius: 12px;
    padding: 0;
    overflow: hidden;
}

/* ========================================
   Statistics Panel (like Chromosome Wheel)
   ======================================== */
.dar-era-stats-row {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--era-obsidian);
    border-bottom: 1px solid var(--era-border);
}

.dar-era-stats {
    background: linear-gradient(145deg, var(--era-card-bg) 0%, rgba(42, 45, 49, 0.8) 100%);
    border-radius: 10px;
    padding: 1rem;
    border: 1px solid var(--era-border);
    min-width: 200px;
}

.dar-era-stats-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--era-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--era-border);
}

.dar-era-stats-header i {
    color: var(--era-accent);
}

.dar-era-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.dar-era-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
}

.dar-era-stat-value {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--era-ivory);
    line-height: 1.2;
}

.dar-era-stat-label {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.625rem;
    color: var(--era-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-top: 0.25rem;
}

.dar-era-stat-highlight {
    grid-column: span 2;
    background: rgba(35, 116, 101, 0.15);
    border: 1px solid rgba(35, 116, 101, 0.3);
}

.dar-era-stat-highlight .dar-era-stat-value {
    color: var(--era-accent);
}

/* ========================================
   Help Panel
   ======================================== */
.dar-era-help {
    background: linear-gradient(145deg, var(--era-card-bg) 0%, rgba(42, 45, 49, 0.8) 100%);
    border-radius: 10px;
    border: 1px solid var(--era-border);
    overflow: hidden;
    align-self: start;
}

.dar-era-help-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--era-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem;
    cursor: pointer;
    transition: background var(--era-transition-fast);
}

.dar-era-help-header:hover {
    background: rgba(168, 159, 145, 0.05);
}

.dar-era-help-header i:first-child {
    color: var(--era-accent);
}

.dar-era-help-toggle {
    margin-left: auto;
    transition: transform var(--era-transition);
}

.dar-era-help-header[aria-expanded="false"] .dar-era-help-toggle {
    transform: rotate(-90deg);
}

.dar-era-help-body {
    padding: 0 1rem 1rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.8125rem;
    color: var(--era-text);
    line-height: 1.6;
}

.dar-era-help-body ul {
    margin: 0.5rem 0 0;
    padding-left: 1.25rem;
}

.dar-era-help-body li {
    margin-bottom: 0.25rem;
}

/* ========================================
   Era Timeline Content
   ======================================== */
.dar-era-content {
    padding: 1.5rem;
}

.dar-era-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* ========================================
   Era Card
   ======================================== */
.dar-era-card {
    background: var(--era-card-bg);
    border-radius: 12px;
    border: 1px solid var(--era-border);
    overflow: hidden;
    transition: all var(--era-transition);
}

.dar-era-card:hover {
    border-color: var(--era-accent);
}

.dar-era-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: background var(--era-transition-fast);
    user-select: none;
}

.dar-era-card-header:hover {
    background: rgba(168, 159, 145, 0.05);
}

.dar-era-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 12px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.dar-era-icon i {
    font-size: 1.25rem;
    color: var(--era-ivory);
}

/* SVG Era Icon Styles */
.dar-era-svg-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.dar-era-svg-icon-badge {
    width: 20px;
    height: 20px;
    object-fit: contain;
    margin-right: 0.5rem;
    vertical-align: middle;
}

.dar-era-info {
    flex: 1;
    min-width: 0;
}

.dar-era-name {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--era-ivory);
    margin: 0 0 0.25rem;
    line-height: 1.2;
}

.dar-era-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.8125rem;
    color: var(--era-text-muted);
}

.dar-era-meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.dar-era-meta-item i {
    font-size: 0.75rem;
    color: var(--era-accent);
}

.dar-era-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--era-obsidian);
    border-radius: 8px;
    flex-shrink: 0;
    transition: all var(--era-transition);
}

.dar-era-toggle i {
    font-size: 0.875rem;
    color: var(--era-text-muted);
    transition: transform var(--era-transition);
}

.dar-era-card.expanded .dar-era-toggle {
    background: var(--era-accent);
}

.dar-era-card.expanded .dar-era-toggle i {
    color: var(--era-ivory);
    transform: rotate(180deg);
}

/* ========================================
   Era Card Body (Country Grid)
   ======================================== */
.dar-era-card-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--era-transition);
    background: var(--era-obsidian);
}

.dar-era-card.expanded .dar-era-card-body {
    max-height: 2000px;
}

.dar-era-countries {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    padding: 1.25rem;
}

/* ========================================
   Country Card
   ======================================== */
.dar-country-card {
    background: var(--era-card-bg);
    border-radius: 10px;
    border: 1px solid var(--era-border);
    overflow: hidden;
    transition: all var(--era-transition-fast);
}

.dar-country-card:hover {
    border-color: rgba(168, 159, 145, 0.3);
    transform: translateY(-2px);
}

.dar-country-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1rem;
    background: linear-gradient(135deg, rgba(35, 116, 101, 0.1) 0%, transparent 100%);
    border-bottom: 1px solid var(--era-border-light);
}

.dar-country-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--era-ivory);
}

.dar-country-name i {
    font-size: 0.875rem;
    color: var(--era-accent);
}

.dar-country-count {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--era-accent);
    background: rgba(35, 116, 101, 0.15);
    padding: 0.25rem 0.625rem;
    border-radius: 12px;
}

.dar-country-samples {
    padding: 0.75rem 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* ========================================
   Sample Chip
   ======================================== */
.dar-sample-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: var(--era-obsidian);
    border: 1px solid var(--era-border);
    border-radius: 6px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.75rem;
    color: var(--era-text);
    cursor: pointer;
    transition: all var(--era-transition-fast);
    max-width: 100%;
}

.dar-sample-chip:hover {
    background: rgba(35, 116, 101, 0.1);
    border-color: var(--era-accent);
    color: var(--era-ivory);
}

.dar-sample-chip-color {
    width: 8px;
    height: 8px;
    border-radius: 2px;
    flex-shrink: 0;
}

.dar-sample-chip-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

/* ========================================
   Sample Portrait Badge
   ======================================== */
.dar-sample-portrait {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--era-border);
    cursor: pointer;
    transition: all var(--era-transition-fast);
    flex-shrink: 0;
}

.dar-sample-portrait:hover {
    border-color: var(--era-amber);
    transform: scale(1.1);
    z-index: 1;
}

.dar-sample-portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========================================
   Empty State
   ======================================== */
.dar-era-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
    color: var(--era-text-muted);
}

.dar-era-empty i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.dar-era-empty h5 {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--era-ivory);
    margin-bottom: 0.5rem;
}

.dar-era-empty p {
    font-size: 0.9375rem;
    margin: 0;
}

/* ========================================
   Era-specific Colors (Legacy support for FontAwesome icons)
   SVG icons now have embedded colors, but kept for backward compatibility
   ======================================== */
.dar-era-paleolithic .dar-era-icon {
    background: rgba(139, 115, 85, 0.2);
    box-shadow: 0 4px 12px rgba(139, 115, 85, 0.2);
}

.dar-era-mesolithic .dar-era-icon {
    background: rgba(107, 142, 35, 0.2);
    box-shadow: 0 4px 12px rgba(107, 142, 35, 0.2);
}

.dar-era-neolithic .dar-era-icon {
    background: rgba(46, 139, 87, 0.2);
    box-shadow: 0 4px 12px rgba(46, 139, 87, 0.2);
}

.dar-era-chalcolithic .dar-era-icon {
    background: rgba(205, 133, 63, 0.2);
    box-shadow: 0 4px 12px rgba(205, 133, 63, 0.2);
}

.dar-era-bronze .dar-era-icon {
    background: rgba(210, 105, 30, 0.2);
    box-shadow: 0 4px 12px rgba(210, 105, 30, 0.2);
}

.dar-era-iron .dar-era-icon {
    background: rgba(70, 130, 180, 0.2);
    box-shadow: 0 4px 12px rgba(70, 130, 180, 0.2);
}

.dar-era-medieval .dar-era-icon {
    background: rgba(107, 70, 193, 0.2);
    box-shadow: 0 4px 12px rgba(107, 70, 193, 0.2);
}

.dar-era-modern .dar-era-icon {
    background: rgba(59, 130, 246, 0.2);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

/* ========================================
   Responsive - Tablet
   ======================================== */
@media (max-width: 991px) {
    .dar-era-stats-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .dar-era-stats {
        min-width: unset;
    }
    
    .dar-era-stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .dar-era-stat-highlight {
        grid-column: span 1;
    }
    
    .dar-era-countries {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   Responsive - Mobile
   ======================================== */
@media (max-width: 767px) {
    .dar-era-stats-row {
        padding: 1rem;
    }
    
    .dar-era-stats {
        padding: 0.75rem;
    }
    
    .dar-era-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .dar-era-stat-value {
        font-size: 1.25rem;
    }
    
    .dar-era-stat-highlight {
        grid-column: span 2;
    }
    
    .dar-era-content {
        padding: 1rem;
    }
    
    .dar-era-card-header {
        padding: 0.875rem 1rem;
        gap: 0.75rem;
    }
    
    .dar-era-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
    }
    
    .dar-era-icon i {
        font-size: 1rem;
    }
    
    .dar-era-name {
        font-size: 1.125rem;
    }
    
    .dar-era-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
        font-size: 0.75rem;
    }
    
    .dar-era-countries {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    
    .dar-country-header {
        padding: 0.75rem;
    }
    
    .dar-country-samples {
        padding: 0.625rem 0.75rem;
    }
    
    .dar-sample-chip {
        padding: 0.25rem 0.5rem;
        font-size: 0.6875rem;
    }
    
    .dar-sample-chip-name {
        max-width: 140px;
    }
    
    .dar-sample-portrait {
        width: 36px;
        height: 36px;
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .dar-era-timeline {
        background: #fff;
        border: 1px solid #ddd;
    }
    
    .dar-era-stats-row {
        background: #f9f9f9;
    }
    
    .dar-era-card {
        background: #fff;
        border-color: #ddd;
        break-inside: avoid;
    }
    
    .dar-era-card-body {
        max-height: none !important;
    }
    
    .dar-era-card-header {
        background: #f5f5f5;
    }
    
    .dar-era-name,
    .dar-era-stat-value,
    .dar-country-name {
        color: #333;
    }
    
    .dar-era-meta,
    .dar-era-stat-label,
    .dar-sample-chip {
        color: #666;
    }
    
    .dar-sample-portrait {
        border-color: #ccc;
    }
    
    .dar-sample-portrait:hover {
        transform: none;
    }
    
    .dar-era-toggle,
    .dar-era-help {
        display: none;
    }
    
    /* Ensure SVG icons are visible when printing */
    .dar-era-svg-icon,
    .dar-era-svg-icon-badge {
        filter: brightness(0.5) saturate(1.2);
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    .dar-era-icon {
        background: #f0f0f0 !important;
    }
}