/* Modern Space Timeline - Sleek Design */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    /* Night Mode Color Palette - Reduced Blue */
    --primary: #8b5cf6;
    --primary-hover: #a78bfa;
    --primary-light: #c4b5fd;
    --accent: #f59e0b;
    --accent-hover: #fbbf24;
    
    /* Dark Neutrals - True Night Mode */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-elevated: #1e1e2a;
    
    /* Text */
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    
    /* Borders & Dividers */
    --border-subtle: rgba(161, 161, 170, 0.08);
    --border-medium: rgba(161, 161, 170, 0.15);
    
    /* Status Colors - Muted for Night Mode */
    --success: #22c55e;
    --error: #f87171;
    --warning: #f59e0b;
    --info: #8b5cf6;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);
    
    /* Spacing */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Mission Control Header - Modern Design */
.mission-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: 1.5rem 2.5rem;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

.mission-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mission-header h2 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-tertiary);
    margin-bottom: 1.5rem;
    text-transform: none;
    letter-spacing: 0.05em;
}

.header-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-elevated);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.btn-control {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    font-family: inherit;
    min-width: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-control:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

#zoom-level {
    color: var(--text-secondary);
    font-weight: 600;
    min-width: 4rem;
    text-align: center;
    font-size: 0.875rem;
}

.date-range {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.context-strip {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
    padding: 1rem 2.5rem 0;
    background: var(--bg-secondary);
}

.context-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 0.9rem 1rem;
}

.context-card strong {
    display: block;
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 0.15rem;
}

.context-card p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin: 0;
}

.context-label {
    display: inline-block;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.68rem;
    margin-bottom: 0.25rem;
}

.context-card-live {
    opacity: 0.92;
}

/* Top Section: Two Column Layout - 50/50 */
.top-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 1.25rem 2.5rem 1.75rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    border-top: 1px solid var(--border-subtle);
}

.top-section-one-column {
    grid-template-columns: 1fr;
}

/* Timeline-first: compact utility band above the timeline */
.top-section--compact {
    padding: 0.9rem 2.5rem 0.85rem;
}

.top-section--compact .search-filters-panel {
    padding: 0.75rem 0.85rem;
    box-shadow: none;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    gap: 0.85rem;
    overflow: visible;
    background: var(--bg-elevated);
}

.top-section--compact .panel-title-row {
    margin-bottom: 0.1rem;
}

.top-section--compact .filter-status {
    margin-top: 0;
    padding: 0.35rem 0.5rem;
    border-style: solid;
    background: rgba(255, 255, 255, 0.02);
}

.top-section--compact .filter-section:not(:first-child) {
    margin-bottom: 0.3rem;
}

.top-section--compact .filter-section:not(:last-child) {
    padding-bottom: 0.6rem;
    margin-bottom: 0.6rem;
}

/* Match mockup: hide quick era presets in compact mode */
.top-section--compact .era-presets-section {
    display: none;
}

/* Reduce stats bar prominence in compact mode */
.top-section--compact .stats-bar {
    padding-top: 0.5rem;
    margin-top: 0.1rem;
}

.top-section--compact .stats-bar .button-group {
    margin-left: 0;
}

/* Timeline-first mockup alignment: keep utility band focused */
.top-section--compact .stats-info {
    display: none;
}

.top-section--compact #playback-btn,
.top-section--compact #show-stats,
.top-section--compact #bookmarks-btn,
.top-section--compact #random-event-btn {
    display: none;
}

/* year-jump lives inside More Tools -> do not hide it globally */

/* Make the historic timeline controls feel like a single-line toolbar */
.top-section--compact .panel-title-row {
    display: none;
}

.top-section--compact .filter-status {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    border: none;
    background: transparent;
    font-size: 0.72rem;
    white-space: nowrap;
}

.top-section--compact #filter-chips {
    display: none;
}

.top-section--compact .section-header {
    display: none;
}

.top-section--compact #advanced-tools .section-header {
    display: flex;
}

.top-section--compact #advanced-tools {
    flex: 0 0 100%;
    width: 100%;
}

.top-section--compact #filter-summary {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.top-section--compact #undo-filters {
    padding: 0.25rem 0.45rem;
    font-size: 0.68rem;
    border-radius: var(--radius-md);
    line-height: 1;
}

.top-section--compact .search-filters-panel {
    flex-direction: row;
    align-items: center;
    gap: 0.6rem;
}

/* When More Tools is expanded, switch from single-line row to a stacked drawer layout. */
.top-section--compact.tools-open .search-filters-panel {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
}

.top-section--compact.tools-open #advanced-tools {
    flex: 0 0 auto;
    width: 100%;
}

.top-section--compact .filter-section {
    margin: 0;
    padding: 0;
    border: none;
}

.top-section--compact .filter-section:not(:last-child) {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.top-section--compact .filter-controls {
    flex-wrap: nowrap;
    gap: 0.5rem;
    align-items: center;
}

.top-section--compact .search-box {
    margin-bottom: 0;
    max-width: none;
    flex: 1;
    min-width: 220px;
}

.top-section--compact .search-box input {
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
}

.top-section--compact .stats-bar {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.top-section--compact .advanced-tools {
    margin-top: 0;
}

@media (max-width: 900px) {
    .top-section--compact .search-filters-panel {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .top-section--compact .search-box {
        min-width: 0;
    }
}

/* Mobile: keep existing behavior (full stacked card) */
@media (max-width: 768px) {
    .top-section--compact {
        padding: 1rem;
    }
    
    .top-section--compact .search-filters-panel {
        padding: 1.25rem;
        border-radius: var(--radius-lg);
    }
    
    .top-section--compact .era-presets-section {
        display: block;
    }
}

@media (max-width: 1200px) {
    .top-section {
        grid-template-columns: 1fr;
    }
    
    .iss-tracker-panel {
        aspect-ratio: 16 / 9; /* Wider on mobile */
        max-height: none;
    }
    
    .iss-map-main {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .context-strip {
        grid-template-columns: 1fr;
        padding: 0.75rem 1rem 0;
    }

    .top-section {
        padding: 1rem;
        gap: 1rem;
    }
    
    .search-filters-panel .filter-controls {
        flex-direction: column;
    }
    
    .search-filters-panel .stats-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-status {
        flex-direction: column;
        align-items: stretch;
    }
    
    .iss-stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Search and Filters Panel - Left Column - Tile */
.search-filters-panel {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    overflow-y: auto;
    max-height: 100%;
}

.panel-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.panel-title-row h3 {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
}

.panel-pill {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
    border: 1px solid var(--border-medium);
    color: var(--text-secondary);
}

.filter-status {
    margin-top: -0.25rem;
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    align-items: center;
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    border: 1px dashed var(--border-medium);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
}

#undo-filters {
    padding: 0.35rem 0.6rem;
    font-size: 0.75rem;
}

/* Section Headers */
.section-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-header::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--primary);
    border-radius: var(--radius-sm);
}

/* Filter Section Cards */
.filter-section {
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    padding: 0;
    transition: all var(--transition-base);
}

.filter-section:not(:last-child) {
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 1.25rem;
    margin-bottom: 1.25rem;
}

/* Active Filter Chips */
.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    min-height: 2rem;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    animation: slideIn 0.2s ease-out;
}

.filter-chip .chip-remove {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    line-height: 1;
    transition: all var(--transition-fast);
}

.filter-chip .chip-remove:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.search-filters-panel .stats-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    padding: 1rem 0;
    background: transparent;
    border: none;
    border-top: 1px solid var(--border-subtle);
    border-radius: 0;
    margin-top: 0.5rem;
    box-shadow: none;
}

.stats-bar .stats-info {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-right: auto;
    padding-right: 1rem;
    border-right: 1px solid var(--border-subtle);
}

.stats-bar .stats-info span {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.stats-bar .stats-info span strong {
    color: var(--primary);
    font-weight: 700;
}

/* Button Groups */
.button-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.button-group-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.stats-bar .button-group {
    margin-left: 0.5rem;
}

.advanced-tools {
    margin-top: -0.25rem;
    border-top: 1px solid var(--border-subtle);
    padding-top: 0.9rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.advanced-tools[hidden] {
    display: none;
}

.search-box {
    position: relative;
    margin-bottom: 1rem;
    max-width: 500px;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.search-box input:focus,
.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background: var(--bg-secondary);
}

.search-box::before {
    content: '🔍';
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    opacity: 0.5;
    pointer-events: none;
}

/* Search Suggestions */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: var(--shadow-lg);
    margin-top: 2px;
}

.suggestion-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--border-subtle);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-item:hover,
.suggestion-item.selected {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-clear {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    width: 1.75rem;
    height: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-clear:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.filter-controls {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

.era-presets {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.era-btn {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-medium);
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    font-size: 0.8125rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.era-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.era-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.era-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.filter-controls select,
.filter-controls input[type="date"],
.filter-controls input[type="number"] {
    padding: 0.625rem 0.875rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.875rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.filter-controls select:focus,
.filter-controls input[type="date"]:focus,
.filter-controls input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.filter-controls select.active,
.filter-controls input[type="date"].active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.15);
}

.stats-bar {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.stats-bar span {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.stats-bar span strong {
    color: var(--primary);
    font-weight: 600;
}

/* Statistics Modal */
.stats-modal {
    display: none;
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(8px);
}

.stats-modal-content {
    background: var(--bg-secondary);
    margin: 5% auto;
    padding: 2rem;
    border: 1px solid var(--border-subtle);
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.stat-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    padding: 1.5rem;
    text-align: center;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.stat-card h3 {
    color: var(--text-tertiary);
    margin-bottom: 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-card .stat-value {
    font-size: 2rem;
    color: var(--text-primary);
    font-weight: 700;
}

.stat-card .stat-label {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    margin-top: 0.5rem;
}

/* Hidden event marker */
.event-marker.hidden {
    display: none;
}

/* Loading spinner */
.loading-spinner {
    border: 3px solid var(--border-medium);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Buttons - Modern Design */
.btn-primary {
    background: var(--primary);
    color: white;
    padding: 0.625rem 1.25rem;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: all var(--transition-base);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    padding: 0.625rem 1.25rem;
    border: 1px solid var(--border-medium);
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-weight: 500;
    transition: all var(--transition-base);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.15);
}

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

/* Icon Buttons */
.btn-icon {
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-icon:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-danger {
    background: var(--error);
    color: white;
    padding: 0.625rem 1.25rem;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: all var(--transition-base);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Messages */
.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 1rem;
    margin: 1.25rem 0;
    border-radius: var(--radius-lg);
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 1rem;
    margin: 1.25rem 0;
    border-radius: var(--radius-lg);
}

/* Modal - Modern Design */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(8px);
}

.modal-content {
    background: var(--bg-secondary);
    margin: 5% auto;
    padding: 0;
    border: 1px solid var(--border-subtle);
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-xl);
    position: relative;
}

.modal-close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    color: var(--text-tertiary);
    font-size: 2rem;
    font-weight: 300;
    cursor: pointer;
    z-index: 1001;
    transition: all var(--transition-base);
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
    transform: rotate(90deg);
}

#modal-body {
    padding: 2.5rem;
}

.modal-event-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    margin-bottom: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-event-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.modal-event-date {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 1rem;
    font-weight: 500;
}

.modal-event-category {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modal-event-description {
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 2rem;
    font-size: 1rem;
}

.modal-event-sources,
.modal-event-links {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-subtle);
}

.modal-event-sources h3,
.modal-event-links h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1rem;
    font-weight: 600;
}

.modal-event-sources ul,
.modal-event-links ul {
    list-style: none;
    padding-left: 0;
}

.modal-event-sources li,
.modal-event-links li {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
}

.modal-event-sources li::before,
.modal-event-links li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.modal-event-links a {
    color: var(--primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.modal-event-links a:hover {
    color: var(--primary-hover);
    border-bottom-color: var(--primary-hover);
}

/* Bookmark Items */
.bookmark-item {
    transition: all var(--transition-base);
}

.bookmark-item:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    transform: translateX(4px);
}

/* Modal Action Buttons */
.modal-action-buttons {
    position: absolute;
    top: 1.5rem;
    right: 4rem;
    display: flex;
    gap: 0.5rem;
    z-index: 1002;
}

.share-btn {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    font-size: 1.125rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1002;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.share-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

/* Enhanced Statistics */
.stats-section {
    margin-bottom: 2rem;
}

.decade-chart {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.decade-bar-item {
    display: grid;
    grid-template-columns: 80px 1fr 60px;
    gap: 1rem;
    align-items: center;
}

.decade-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
}

.decade-bar {
    height: 24px;
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
}

.decade-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    transition: width var(--transition-base);
}

.decade-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    text-align: right;
}

.year-heatmap {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.heatmap-year {
    padding: 0.375rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    min-width: 50px;
    text-align: center;
}

.heatmap-year:hover {
    transform: scale(1.1);
    z-index: 10;
    position: relative;
}

/* Playback Highlight */
.playback-highlight {
    animation: playbackPulse 0.5s ease;
}

@keyframes playbackPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.7);
    }
    50% {
        transform: scale(1.15);
        box-shadow: 0 0 0 8px rgba(139, 92, 246, 0);
    }
}

/* Smooth transitions for all interactive elements */
a, button, input, select {
    transition: all var(--transition-base);
}

/* Focus states for accessibility */
button:focus,
input:focus,
select:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Disabled state */
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Smooth page transitions */
body {
    transition: opacity var(--transition-base);
}

body.loading {
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mission-header {
        padding: 1.5rem;
    }
    
    .mission-header h1 {
        font-size: 1.5rem;
    }
    
    .header-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .zoom-controls {
        justify-content: center;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .filter-controls {
        flex-direction: column;
    }
    
    .filter-controls select,
    .filter-controls input[type="date"],
    .filter-controls button {
        width: 100%;
    }
    
    .stats-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
        border-radius: var(--radius-lg);
    }
    
    #modal-body {
        padding: 1.5rem;
    }
}