/* CSS Variables */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #16161f;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --mag-1: #22c55e;
    --mag-2: #84cc16;
    --mag-3: #eab308;
    --mag-4: #f97316;
    --mag-5: #ef4444;
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.header {
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    position: relative;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-md);
}

.logo-icon {
    width: 24px;
    height: 24px;
    color: white;
}

.pulse-ring {
    position: absolute;
    inset: -4px;
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-md);
    animation: pulse-ring 2s ease-out infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}

.title-group h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 20px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
}

.status-dot.live {
    animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.status-text {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--success);
    letter-spacing: 0.1em;
}

.last-update {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.update-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.update-time {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

/* Map Container */
.map-container {
    flex: 1;
    position: relative;
    background: var(--bg-primary);
}

#map {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
}

.leaflet-container {
    background: var(--bg-primary);
    font-family: inherit;
}

.leaflet-control-zoom {
    border: none !important;
    box-shadow: var(--shadow-lg) !important;
}

.leaflet-control-zoom a {
    background: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color) !important;
    width: 36px !important;
    height: 36px !important;
    line-height: 36px !important;
    font-size: 18px !important;
}

.leaflet-control-zoom a:hover {
    background: var(--bg-tertiary) !important;
}

.leaflet-control-zoom-in {
    border-radius: var(--radius-sm) var(--radius-sm) 0 0 !important;
}

.leaflet-control-zoom-out {
    border-radius: 0 0 var(--radius-sm) var(--radius-sm) !important;
}

/* Map Overlays */
.map-overlay {
    position: absolute;
    z-index: 1000;
    pointer-events: auto;
}

.map-overlay.top-left {
    top: 10px;
    left: 10px;
}

.map-overlay.bottom-right {
    bottom: 24px;
    right: 10px;
}

.legend {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.legend-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    gap: 8px;
}

.legend h3 {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0;
}

.legend-toggle {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
}

.legend-toggle:hover {
    background: var(--accent-primary);
    color: white;
}

.legend-toggle svg {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-fast);
}

.legend.collapsed .legend-toggle svg {
    transform: rotate(180deg);
}

.legend-items {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 10px;
    overflow: hidden;
    max-height: 200px;
    transition: all var(--transition-normal);
}

.legend.collapsed .legend-items {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.legend-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    box-shadow: 0 0 10px currentColor;
}

.legend-dot.mag-1 { background: var(--mag-1); color: var(--mag-1); }
.legend-dot.mag-2 { background: var(--mag-2); color: var(--mag-2); }
.legend-dot.mag-3 { background: var(--mag-3); color: var(--mag-3); }
.legend-dot.mag-4 { background: var(--mag-4); color: var(--mag-4); }
.legend-dot.mag-5 { background: var(--mag-5); color: var(--mag-5); }

/* Time Filter */
.time-filter {
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 4px;
    backdrop-filter: blur(10px);
}

.filter-btn {
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.filter-btn.active {
    color: var(--text-primary);
    background: var(--accent-primary);
}

/* Sidebar */
.sidebar {
    width: 380px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar h2 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

/* Stats Panel */
.stats-panel {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    transition: all var(--transition-fast);
}

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

.stat-card.highlight {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border-color: rgba(99, 102, 241, 0.3);
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.stat-card.highlight .stat-value {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Recent Panel */
.recent-panel {
    flex: 1;
    padding: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.earthquake-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-right: 8px;
}

.earthquake-list::-webkit-scrollbar {
    width: 6px;
}

.earthquake-list::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.earthquake-list::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 3px;
}

.earthquake-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.earthquake-item.new {
    animation: slide-in 0.5s ease-out;
}

@keyframes slide-in {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.quake-magnitude {
    min-width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--radius-sm);
    color: white;
}

.quake-magnitude.mag-1 { background: var(--mag-1); box-shadow: 0 0 15px rgba(34, 197, 94, 0.4); }
.quake-magnitude.mag-2 { background: var(--mag-2); box-shadow: 0 0 15px rgba(132, 204, 22, 0.4); }
.quake-magnitude.mag-3 { background: var(--mag-3); box-shadow: 0 0 15px rgba(234, 179, 8, 0.4); }
.quake-magnitude.mag-4 { background: var(--mag-4); box-shadow: 0 0 15px rgba(249, 115, 22, 0.4); }
.quake-magnitude.mag-5 { background: var(--mag-5); box-shadow: 0 0 15px rgba(239, 68, 68, 0.4); }

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

.quake-location {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.quake-meta {
    display: flex;
    gap: 12px;
    margin-top: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.quake-time {
    display: flex;
    align-items: center;
    gap: 4px;
}

.quake-depth {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 40px;
    color: var(--text-muted);
}

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

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

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    text-align: center;
}

.empty-icon {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
}

.empty-text {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Chart Panel */
.chart-panel {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.chart-container {
    height: 100px;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 100%;
    gap: 8px;
    padding-top: 20px;
}

.chart-bar-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    height: 100%;
}

.chart-bar {
    width: 100%;
    border-radius: 4px 4px 0 0;
    transition: height 0.5s ease;
    position: relative;
}

.chart-bar::before {
    content: attr(data-count);
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.chart-bar.mag-1 { background: linear-gradient(to top, var(--mag-1), rgba(34, 197, 94, 0.5)); }
.chart-bar.mag-2 { background: linear-gradient(to top, var(--mag-2), rgba(132, 204, 22, 0.5)); }
.chart-bar.mag-3 { background: linear-gradient(to top, var(--mag-3), rgba(234, 179, 8, 0.5)); }
.chart-bar.mag-4 { background: linear-gradient(to top, var(--mag-4), rgba(249, 115, 22, 0.5)); }
.chart-bar.mag-5 { background: linear-gradient(to top, var(--mag-5), rgba(239, 68, 68, 0.5)); }

.chart-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fade-in 0.2s ease;
}

.modal.hidden {
    display: none;
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    width: 90%;
    max-width: 400px;
    max-height: 85vh;
    box-shadow: var(--shadow-lg);
    animation: scale-in 0.2s ease;
    display: flex;
    flex-direction: column;
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 12px;
}

@keyframes scale-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--danger);
    color: white;
}

.modal-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.modal-magnitude {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    color: white;
    background: var(--accent-primary);
}

.modal-title {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.detail-value {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.modal-link {
    display: block;
    text-align: center;
    padding: 12px;
    background: var(--accent-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.modal-link:hover {
    background: var(--accent-secondary);
}

.modal-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.share-section {
    position: relative;
}

.share-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-btn:hover {
    background: var(--bg-card);
    border-color: var(--accent-primary);
}

.share-dropdown {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    margin-bottom: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.share-dropdown.hidden {
    display: none;
}

.share-option {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: transparent;
    color: var(--text-primary);
    border: none;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.share-option:hover {
    background: var(--bg-tertiary);
}

.share-option svg {
    flex-shrink: 0;
}

.share-option[data-share="copy"]:hover {
    color: var(--accent-primary);
}

.share-option[data-share="twitter"]:hover {
    color: #1DA1F2;
}

.share-option[data-share="facebook"]:hover {
    color: #1877F2;
}

.share-option[data-share="whatsapp"]:hover {
    color: #25D366;
}

.share-option[data-share="linkedin"]:hover {
    color: #0A66C2;
}

.copy-success {
    color: var(--success) !important;
}

/* Station Detection Radial Map */
.station-section {
    margin-top: 16px;
    margin-bottom: 16px;
}

.station-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.station-header h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.station-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

.radial-map-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.radial-map {
    position: relative;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--border-color);
}

.radial-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 10;
}

.epicenter-dot {
    width: 12px;
    height: 12px;
    background: var(--danger);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--danger), 0 0 20px rgba(239, 68, 68, 0.4);
    animation: epicenter-pulse 2s ease-out infinite;
}

@keyframes epicenter-pulse {
    0% { box-shadow: 0 0 10px var(--danger), 0 0 20px rgba(239, 68, 68, 0.4); }
    50% { box-shadow: 0 0 15px var(--danger), 0 0 30px rgba(239, 68, 68, 0.6); }
    100% { box-shadow: 0 0 10px var(--danger), 0 0 20px rgba(239, 68, 68, 0.4); }
}

.epicenter-label {
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.radial-rings {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.radial-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 1px dashed var(--border-color);
    border-radius: 50%;
    opacity: 0.5;
}

.radial-ring[data-distance="0.5"] {
    width: 33%;
    height: 33%;
}

.radial-ring[data-distance="1.0"] {
    width: 66%;
    height: 66%;
}

.radial-ring[data-distance="1.5"] {
    width: 100%;
    height: 100%;
}

.stations-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.station-dot {
    position: absolute;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.station-dot:hover {
    z-index: 20;
}

.station-dot:hover .station-label {
    opacity: 1;
    transform: translateY(-2px);
}

.station-marker {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 2px solid;
    transition: all var(--transition-fast);
}

.station-dot:hover .station-marker {
    transform: scale(1.5);
}

.station-marker.p-wave {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 6px var(--accent-primary);
}

.station-marker.s-wave {
    background: var(--warning);
    border-color: var(--warning);
    box-shadow: 0 0 6px var(--warning);
}

.station-marker.both-waves {
    background: linear-gradient(135deg, var(--accent-primary) 50%, var(--warning) 50%);
    border-color: var(--accent-primary);
    box-shadow: 0 0 6px var(--accent-primary);
}

.station-label {
    font-size: 0.55rem;
    color: var(--text-secondary);
    margin-top: 2px;
    opacity: 0;
    transition: all var(--transition-fast);
    white-space: nowrap;
    background: var(--bg-card);
    padding: 1px 4px;
    border-radius: 2px;
}

.radial-legend {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.radial-legend .legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.wave-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.wave-dot.p-wave {
    background: var(--accent-primary);
    box-shadow: 0 0 4px var(--accent-primary);
}

.wave-dot.s-wave {
    background: var(--warning);
    box-shadow: 0 0 4px var(--warning);
}

.station-section.loading .radial-map {
    opacity: 0.5;
}

.station-section.error .radial-map-container {
    display: none;
}

.station-error {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    padding: 20px;
}

/* Custom Earthquake Marker */
.earthquake-marker {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.earthquake-marker .marker-inner {
    position: absolute;
    border-radius: 50%;
    animation: marker-pulse 2s ease-out infinite;
}

.earthquake-marker .marker-core {
    position: relative;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: transform 0.2s ease;
}

.earthquake-marker:hover .marker-core {
    transform: scale(1.2);
}

@keyframes marker-pulse {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }
    100% {
        transform: scale(2.5);
        opacity: 0;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: 50%;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .header {
        padding: 12px 16px;
    }
    
    .title-group h1 {
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sidebar {
        height: 60%;
    }
}

/* Footer */
.site-footer {
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 10px 20px;
    text-align: center;
    z-index: 50;
    position: relative;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.attribution {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.attribution a {
    color: var(--accent-primary);
    text-decoration: none;
}

.attribution a:hover {
    text-decoration: underline;
}

.disclaimer {
    font-size: 0.65rem;
    color: var(--text-muted);
    line-height: 1.4;
}