* {
    box-sizing: border-box;
}

:root {
    /* MD3 Dark Theme Tokens */
    --md-primary: #D0BCFF;
    --md-on-primary: #381E72;
    --md-primary-container: #4F378B;
    --md-on-primary-container: #EADDFF;
    --md-secondary: #CCC2DC;
    --md-on-secondary: #332D41;
    --md-surface: #1C1B1F;
    --md-on-surface: #E6E1E5;
    --md-surface-variant: #49454F;
    --md-on-surface-variant: #CAC4D0;
    --md-outline: #938F99;
    --md-error: #F2B8B5;
    --md-on-error: #601410;

    /* Functional Tokens */
    --bg-main: #0a0a0c;
    --surface-card: rgba(28, 27, 31, 0.6);
    --border-subtle: rgba(255, 255, 255, 0.08);
}

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--md-on-surface);
    color-scheme: dark;
    overflow: hidden;
    /* Prevent body scroll, use container scroll */
    height: 100vh;
    width: 100vw;
}

.layout {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Material Navigation Rail / Sidebar */
.sidebar {
    width: 280px;
    background: #121214;
    border-right: 1px solid var(--border-subtle);
    padding: 24px 12px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.logo {
    padding: 0 16px 32px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--md-primary);
    letter-spacing: -0.5px;
}

nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-radius: 100px;
    /* MD3 Pill shape */
    color: var(--md-on-surface-variant);
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    background: transparent;
    font-size: 0.875rem;
    font-weight: 500;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--md-on-surface);
}

.nav-item.active {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

.nav-item span {
    font-size: 1.25rem;
    margin-right: 12px;
}

/* Filter Controls */
.filter-trigger {
    cursor: pointer;
    font-size: 0.8rem;
    opacity: 0.4;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s;
    user-select: none;
}

.filter-trigger:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

.filter-trigger.active {
    opacity: 1;
    color: var(--md-primary);
    background: rgba(var(--md-primary-rgb), 0.1);
}

.filter-dropdown {
    position: absolute;
    z-index: 1000;
    min-width: 250px;
    background: #1f1f23;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    border: 1px solid var(--border-subtle);
    animation: fadeIn 0.15s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.filter-tree-node details>summary {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-tree-node summary::-webkit-details-marker {
    display: none;
}

/* Main Content Area */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    background: radial-gradient(circle at top right, rgba(208, 188, 255, 0.05), transparent 600px);
}

.view-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* MD3 Elevated Cards */
.card {
    background: var(--surface-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 8px;
    color: var(--md-on-surface);
}

.text-muted {
    color: var(--md-on-surface-variant);
    font-size: 0.9rem;
}

/* Form Styling */
.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--md-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="file"] {
    width: 100%;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--md-outline);
    background: rgba(0, 0, 0, 0.3);
    color: white;
    font-size: 1rem;
    transition: border-color 0.2s;
}

select:focus,
input:focus {
    outline: none;
    border-color: var(--md-primary);
    background: rgba(0, 0, 0, 0.5);
}

/* Fix browser autofill background/color in dark mode */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 1000px #1c1b1f inset !important;
    -webkit-text-fill-color: #ffffff !important;
    color: #ffffff !important;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--md-primary);
    color: var(--md-on-primary);
}

.btn-primary:hover {
    box-shadow: 0 2px 8px rgba(208, 188, 255, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--md-surface-variant);
    color: var(--md-on-surface-variant);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--md-outline);
    border-radius: 20px;
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: background 0.2s;
    margin-bottom: 24px;
}

.upload-area:hover {
    background: rgba(208, 188, 255, 0.05);
    border-color: var(--md-primary);
}

/* Tables */
.stats-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.stats-table th {
    padding: 16px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--md-primary);
    text-transform: uppercase;
    border-bottom: 2px solid var(--border-subtle);
}

.stats-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.95rem;
}

/* Alerts */
.alert {
    padding: 16px 24px;
    border-radius: 16px;
    margin-bottom: 24px;
    font-weight: 500;
}

.alert-success {
    background: #00391C;
    color: #B2F0C6;
}

.alert-error {
    background: var(--md-on-error);
    color: var(--md-error);
}

/* Responsive fixes and Hamburger Menu */
.menu-trigger {
    display: none;
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1000;
    background: var(--md-primary);
    color: var(--md-on-primary);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    border: none;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 900;
}

@media (max-width: 900px) {
    body {
        overflow: auto;
    }

    .layout {
        flex-direction: column;
    }

    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        bottom: 0;
        z-index: 950;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 8px 0 24px rgba(0, 0, 0, 0.5);
    }

    .sidebar.open {
        transform: translateX(280px);
    }

    .sidebar-overlay.show {
        display: block;
    }

    .menu-trigger {
        display: flex;
    }

    .main-content {
        padding: 72px 16px 24px;
        height: auto;
        overflow: visible;
    }

    .view-container {
        padding: 0;
    }

    .card {
        padding: 20px;
        border-radius: 20px;
    }

    /* Stack Grids */
    #view-limits .section>div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    #view-stats .section>div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    #view-mgmt .section>div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    #view-mgmt #mgmt-params-container {
        grid-template-columns: 1fr !important;
    }

    /* Adjust Action Buttons for Mobile */
    .section h2,
    .section h3 {
        font-size: 1.25rem;
    }

    .btn {
        width: 100%;
        margin-top: 8px;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--md-surface-variant);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--md-outline);
}

.tab-btn {
    background: none;
    border: none;
    color: var(--md-on-surface-variant);
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab-btn.active {
    color: var(--md-primary);
    border-bottom-color: var(--md-primary);
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

.map-tiles {
    filter: invert(100%) hue-rotate(180deg) brightness(95%) contrast(90%);
}

.leaflet-container {
    background: #111 !important;
}

.leaflet-popup-content-wrapper {
    background: #1f2937;
    color: white;
    border-radius: 12px;
}

/* Management Tools Header */
.mgmt-header {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: flex-end;
    margin-bottom: 2.5rem;
}

.mgmt-header .form-group {
    margin-bottom: 0;
}

.mgmt-header .form-group:nth-child(1) {
    flex: 1.5;
    min-width: 200px;
}

.mgmt-header .form-group:nth-child(2) {
    flex: 2;
    min-width: 250px;
}

.mgmt-header .btn-primary {
    height: 48px;
    min-width: 160px;
}

@media (max-width: 768px) {
    .mgmt-header .form-group {
        flex: 1 1 100% !important;
    }

    .mgmt-header .btn-primary {
        flex: 1 1 100% !important;
    }
}

/* Map Tooltips */
.map-tooltip {
    background: #1f2937 !important;
    color: white !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: 8px !important;
    font-size: 0.85rem !important;
    padding: 4px 8px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5) !important;
    pointer-events: none;
    display: none !important;
    /* Hidden by default */
}

/* Show tooltips only during export */
.exporting-map .map-tooltip {
    display: block !important;
}

.map-tooltip:before {
    border-top-color: #1f2937 !important;
    border-bottom-color: #1f2937 !important;
}