:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #059669;
    --success-hover: #047857;
    --danger-color: #dc2626;
    --danger-hover: #b91c1c;
    --warning-color: #d97706;
    --warning-hover: #b45309;
    --purple-color: #7c3aed;
    --purple-hover: #6d28d9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --background-white: rgba(255, 255, 255, 0.95);
    --background-glass: rgba(255, 255, 255, 0.85);
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
}

/* Light theme (default) */
[data-theme="light"] {
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --background-white: rgba(255, 255, 255, 0.95);
    --background-glass: rgba(255, 255, 255, 0.85);
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Dark theme */
[data-theme="dark"] {
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --background-white: rgba(15, 23, 42, 0.95);
    --background-glass: rgba(30, 41, 59, 0.85);
    --border-color: #334155;
    --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, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    height: 100vh;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

#map {
    height: 100vh;
    width: 100%;
}

.header {
    position: absolute;
    top: 16px;
    left: 16px;
    right: 16px;
    z-index: 1000;
    background: var(--background-glass);
    padding: 20px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
}

.header-text {
    flex: 1;
}

.header-text h1 {
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.025em;
}

.header-text p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.5;
}

.header-actions {
    display: flex;
    align-items: flex-start;
    margin-top: -4px;
}

.stats {
    position: absolute;
    bottom: 16px;
    left: 16px;
    z-index: 1000;
    background: var(--background-glass);
    padding: 16px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

.stats div {
    margin-bottom: 4px;
}

.stats div:last-child {
    margin-bottom: 0;
}

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

.visited-marker {
    background-color: var(--success-color) !important;
    border: 3px solid var(--success-hover) !important;
}

.unvisited-marker {
    background-color: var(--danger-color) !important;
    border: 3px solid var(--danger-hover) !important;
}

/* Leaflet popup overrides for theming */
.leaflet-popup-content-wrapper {
    background: var(--background-white) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--border-radius-sm) !important;
    box-shadow: var(--shadow-lg) !important;
    backdrop-filter: blur(20px) !important;
}

.leaflet-popup-content {
    margin: 0 !important;
    padding: 16px !important;
    background: transparent !important;
}

.leaflet-popup-tip {
    background: var(--background-white) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: none !important;
}

.custom-popup {
    font-family: inherit;
    min-width: 280px;
    background: transparent !important;
    border: none !important;
    border-radius: 0;
    box-shadow: none !important;
    backdrop-filter: none !important;
}

.popup-title {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.popup-info {
    margin-bottom: 16px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

.popup-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

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

.popup-button.visited {
    background: var(--success-color);
}

.popup-button.visited:hover {
    background: var(--success-hover);
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2000;
    background: var(--background-glass);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    color: var(--text-primary);
}

.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

/* Dynamic cluster styling based on visited status */
.cluster-visited {
    background-color: rgba(5, 150, 105, 0.7) !important;
}

.cluster-visited div {
    background-color: rgba(4, 120, 87, 0.8) !important;
}

.cluster-unvisited {
    background-color: rgba(220, 38, 38, 0.7) !important;
}

.cluster-unvisited div {
    background-color: rgba(185, 28, 28, 0.8) !important;
}

/* Dropdown menu styling */
.dropdown-menu {
    position: relative;
    z-index: 1001;
}

.dropdown-button {
    background: none;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 8px 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dropdown-button:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 8px;
    background: var(--background-glass);
    min-width: 200px;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1002;
    overflow: hidden;
}

.dropdown-content a {
    color: var(--text-primary);
    padding: 14px 18px;
    text-decoration: none;
    display: block;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.dropdown-content a:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.dropdown-menu.show .dropdown-content {
    display: block;
}

/* Theme toggle styling */
.dropdown-section {
    padding: 12px 18px;
}

.dropdown-label {
    display: block;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.theme-toggle {
    display: flex;
    background: var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 2px;
    gap: 2px;
}

.theme-option {
    flex: 1;
    background: none;
    border: none;
    padding: 6px 12px;
    border-radius: calc(var(--border-radius-sm) - 2px);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.theme-option:hover {
    color: var(--text-primary);
}

.theme-option.active {
    background: var(--background-white);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
}

/* Authentication styling */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.auth-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
    font-family: inherit;
    text-align: center;
}

.auth-button:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.auth-button.secondary {
    background: var(--secondary-color);
    font-size: 12px;
    padding: 6px 12px;
}

.auth-button.secondary:hover {
    background: var(--text-muted);
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.user-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.user-email {
    font-size: 12px;
    color: var(--text-primary);
    font-weight: 500;
    word-break: break-all;
}

.sync-status {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--text-muted);
}

.sync-indicator {
    color: var(--success-color);
    font-size: 8px;
}

.sync-indicator.syncing {
    color: var(--warning-color);
    animation: pulse 1.5s infinite;
}

.sync-indicator.error {
    color: var(--danger-color);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Popup button styling */
.popup-buttons {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

.popup-button {
    flex: 1;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
    font-family: inherit;
    box-shadow: var(--shadow-sm);
}

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

.popup-button.visited {
    background: var(--success-color);
}

.popup-button.visited:hover {
    background: var(--success-hover);
}

.preview-button {
    background: var(--purple-color) !important;
}

.preview-button:hover {
    background: var(--purple-hover) !important;
}

/* Site overlay styling */
.site-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 40%;
    height: 100vh;
    background: var(--background-white);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-xl);
    border-left: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 2000;
    transition: right 0.3s ease-in-out;
    overflow-y: auto;
}

.site-overlay.show {
    right: 0;
}

.overlay-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--background-glass);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 2001;
}

.overlay-header h2 {
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 600;
    margin: 0;
    flex: 1;
    text-align: center;
    letter-spacing: -0.025em;
}

.back-button {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 10px;
    border-radius: var(--border-radius-sm);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-weight: bold;
}

.back-button:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.close-overlay {
    background: none;
    border: none;
    font-size: 22px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 10px;
    border-radius: var(--border-radius-sm);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.close-overlay:hover {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger-color);
}

.overlay-content {
    padding: 24px;
}

.loading-overlay {
    text-align: center;
    padding: 60px 24px;
    color: var(--text-muted);
    font-size: 16px;
}

/* Site details styling */
.site-details {
    max-width: 100%;
}

.site-image {
    margin-bottom: 24px;
    text-align: center;
}

.site-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.info-section {
    margin-bottom: 32px;
}

.info-section h3 {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
    letter-spacing: -0.025em;
}

.info-section p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 15px;
}

.info-grid {
    display: grid;
    gap: 16px;
}

.info-item {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

.info-item strong {
    color: var(--text-primary);
    display: inline-block;
    min-width: 120px;
    font-weight: 600;
}

.status.visited {
    color: var(--success-color);
    font-weight: 600;
}

.status.unvisited {
    color: var(--danger-color);
    font-weight: 600;
}

.overlay-actions {
    display: flex;
    gap: 12px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.action-button {
    flex: 1;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 20px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    transition: all 0.2s ease;
    font-family: inherit;
    box-shadow: var(--shadow-sm);
}

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

.action-button.visited {
    background: var(--success-color);
}

.action-button.visited:hover {
    background: var(--success-hover);
}

.wikipedia-link {
    background: var(--purple-color) !important;
}

.wikipedia-link:hover {
    background: var(--purple-hover) !important;
}

.error-message {
    text-align: center;
    padding: 60px 24px;
}

.error-message h3 {
    color: var(--danger-color);
    font-weight: 600;
    margin-bottom: 12px;
}

.error-message p {
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.5;
}

.basic-info {
    text-align: left;
    background: rgba(248, 250, 252, 0.8);
    padding: 24px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    margin-top: 24px;
}

.basic-info h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 16px;
}

.basic-info p {
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.5;
}

/* Clickable coordinates styling */
.coordinates-link {
    color: var(--primary-color);
    cursor: pointer;
    text-decoration: underline;
    transition: all 0.2s ease;
    font-weight: 500;
}

.coordinates-link:hover {
    color: var(--primary-hover);
    text-decoration: none;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .site-overlay {
        width: 100%;
        right: -100%;
    }
    
    .popup-buttons {
        flex-direction: column;
    }
    
    .popup-button {
        margin-bottom: 5px;
    }
    
    .overlay-actions {
        flex-direction: column;
    }
    
    .action-button {
        margin-bottom: 8px;
    }
    
    .info-item strong {
        min-width: auto;
        display: block;
        margin-bottom: 4px;
    }
}

/* General cluster styling */
.leaflet-cluster-anim .leaflet-marker-icon, .leaflet-cluster-anim .leaflet-marker-shadow {
    -webkit-transition: -webkit-transform 0.3s ease-out, opacity 0.3s ease-in;
    -moz-transition: -moz-transform 0.3s ease-out, opacity 0.3s ease-in;
    -o-transition: -o-transform 0.3s ease-out, opacity 0.3s ease-in;
    transition: transform 0.3s ease-out, opacity 0.3s ease-in;
}

.marker-cluster {
    background-clip: padding-box;
    border-radius: 20px;
}

.marker-cluster div {
    width: 30px;
    height: 30px;
    margin-left: 5px;
    margin-top: 5px;
    text-align: center;
    border-radius: 15px;
    font: 12px "Helvetica Neue", Arial, Helvetica, sans-serif;
}

.marker-cluster span {
    line-height: 30px;
    color: white !important;
    font-weight: bold;
}