:root,
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-card: #ffffff;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --accent-color: #0d6efd;
    --accent-hover: #0b5ed7;
    --accent-light: #cfe2ff;
    --danger-color: #dc3545;
    --success-color: #198754;
    --warning-color: #ffc107;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
    --shadow-md: 0 0.5rem 1rem rgba(0,0,0,0.15);
    --map-tile-filter: none;
    --sidebar-bg: #f8f9fa;
    --nav-panel-bg: #ffffff;
    --popup-bg: #ffffff;
    --popup-border: #dee2e6;
}

[data-theme="dark"] {
    --bg-primary: #1a1d23;
    --bg-secondary: #212529;
    --bg-tertiary: #2c3035;
    --bg-card: #2c3035;
    --text-primary: #e9ecef;
    --text-secondary: #adb5bd;
    --text-muted: #6c757d;
    --border-color: #3d4248;
    --accent-color: #4d9aff;
    --accent-hover: #3d8af2;
    --accent-light: #1a3a5c;
    --danger-color: #e8555f;
    --success-color: #2ea862;
    --warning-color: #e0a800;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0,0,0,0.25);
    --shadow-md: 0 0.5rem 1rem rgba(0,0,0,0.4);
    --map-tile-filter: brightness(0.7) invert(1) contrast(3) hue-rotate(200deg);
    --sidebar-bg: #212529;
    --nav-panel-bg: #1a1d23;
    --popup-bg: #2c3035;
    --popup-border: #3d4248;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

a:hover {
    color: var(--accent-hover);
}

.app-header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.app-header .logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
}

.app-header .header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.main-content {
    display: flex;
    height: calc(100vh - 56px - 40px);
    margin-top: 56px;
}

.map-container {
    flex: 1;
    position: relative;
}

.map-container .leaflet-container {
    width: 100%;
    height: 100%;
    filter: var(--map-tile-filter);
}

.nav-panel {
    width: 320px;
    background-color: var(--nav-panel-bg);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
    padding: 1rem;
    transition: background-color 0.3s ease;
}

.nav-panel .nav-panel-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.nav-panel .nav-item {
    display: flex;
    align-items: center;
    padding: 0.625rem 0.75rem;
    margin-bottom: 0.375rem;
    border-radius: 0.375rem;
    background-color: var(--bg-secondary);
    transition: background-color 0.2s ease;
}

.nav-panel .nav-item:hover {
    background-color: var(--bg-tertiary);
}

.nav-panel .nav-item .nav-item-name {
    font-weight: 500;
    color: var(--text-primary);
}

.nav-panel .nav-item .nav-item-url {
    font-size: 0.75rem;
    color: var(--text-secondary);
    word-break: break-all;
}

.nav-panel .empty-state {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
}

.site-footer {
    height: 40px;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.breathing-light {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--success-color);
    animation: breathe 2s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.3); }
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    padding: 0.375rem 0.5rem;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
}

.marker-popup {
    background-color: var(--popup-bg);
    border: 1px solid var(--popup-border);
    border-radius: 0.5rem;
    padding: 0.75rem;
    min-width: 200px;
}

.marker-popup .vertiname-link {
    font-weight: 600;
    color: var(--accent-color);
    font-size: 1rem;
}

.marker-popup .popup-field {
    margin-top: 0.375rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
}

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

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--bg-tertiary);
}

.btn-danger {
    background-color: var(--danger-color);
    color: #ffffff;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.2rem var(--accent-light);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 1.5rem;
    width: 90%;
    max-width: 480px;
    box-shadow: var(--shadow-md);
}

.modal-content h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.admin-sidebar {
    width: 240px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    padding: 1rem 0;
    position: fixed;
    top: 56px;
    left: 0;
    bottom: 0;
    overflow-y: auto;
}

.admin-sidebar .sidebar-item {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.admin-sidebar .sidebar-item:hover,
.admin-sidebar .sidebar-item.active {
    color: var(--accent-color);
    background-color: var(--bg-tertiary);
}

.admin-content {
    margin-left: 240px;
    padding: 1.5rem;
    margin-top: 56px;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
    font-size: 0.875rem;
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
}

.table td {
    color: var(--text-primary);
}

@media (max-width: 1023px) {
    .main-content {
        flex-direction: column;
    }

    .nav-panel {
        position: fixed;
        top: 56px;
        right: -320px;
        bottom: 0;
        width: 320px;
        z-index: 900;
        transition: right 0.3s ease;
        box-shadow: var(--shadow-md);
    }

    .nav-panel.open {
        right: 0;
    }

    .nav-panel-toggle {
        display: block;
        position: fixed;
        top: 64px;
        right: 1rem;
        z-index: 800;
    }

    .admin-sidebar {
        width: 200px;
    }

    .admin-content {
        margin-left: 200px;
    }
}

@media (min-width: 1024px) {
    .nav-panel-toggle {
        display: none;
    }
}