/**
 * OxiGDAL Advanced COG Viewer - Styles
 *
 * Modern, professional design with:
 * - Clean layout with sidebars
 * - Responsive grid system
 * - Smooth animations
 * - Accessible color scheme
 */

/* CSS Variables */
:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;

    /* Grays */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Layout */
    --sidebar-width: 320px;
    --header-height: 80px;
    --footer-height: 50px;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--gray-900);
    background: var(--gray-50);
    overflow: hidden;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.app-header {
    height: var(--header-height);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md);
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 var(--spacing-xl);
}

.header-left {
    flex: 1;
}

.app-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.025em;
}

.app-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
    margin: var(--spacing-xs) 0 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.version-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.status-idle { background: var(--gray-400); }
.status-loading { background: var(--warning-color); }
.status-ready { background: var(--success-color); }
.status-error { background: var(--error-color); }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.status-text {
    font-size: 0.875rem;
    font-weight: 500;
}

/* App Body */
.app-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebars */
.sidebar {
    width: var(--sidebar-width);
    background: white;
    border-right: 1px solid var(--gray-200);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-right {
    border-right: none;
    border-left: 1px solid var(--gray-200);
}

.sidebar-section {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-100);
}

.section-title {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
}

/* Main Content */
.main-content {
    flex: 1;
    position: relative;
    background: var(--gray-100);
}

.map-container {
    width: 100%;
    height: 100%;
    position: relative;
}

#map-container {
    width: 100%;
    height: 100%;
}

/* Input Group */
.input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.input-field {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

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

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

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

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-link {
    background: transparent;
    color: var(--primary-color);
    text-decoration: none;
}

.btn-link:hover {
    background: var(--gray-50);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    font-size: 1rem;
}

/* Example Cards */
.example-grid {
    display: grid;
    gap: var(--spacing-sm);
}

.example-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

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

.card-icon {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.card-title {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.card-description {
    font-size: 0.75rem;
    color: var(--gray-600);
}

/* Control Groups */
.control-group {
    margin-bottom: var(--spacing-md);
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.select-field {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    background: white;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.select-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Band Inputs */
.band-inputs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.band-input {
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    text-align: center;
}

.band-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Sliders */
.slider-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.slider {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--gray-200);
    border-radius: var(--radius-sm);
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider::-moz-range-thumb:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.slider-value {
    min-width: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    text-align: right;
}

/* Metadata Panel */
.metadata-panel {
    font-size: 0.875rem;
}

.metadata-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

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

.metadata-label {
    font-weight: 600;
    color: var(--gray-700);
}

.metadata-value {
    color: var(--gray-900);
    word-break: break-all;
}

.url-value {
    font-size: 0.75rem;
    color: var(--primary-color);
}

/* Info Panel */
.info-panel {
    font-size: 0.875rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

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

.info-label {
    color: var(--gray-600);
    font-weight: 500;
}

.info-value {
    color: var(--gray-900);
    font-weight: 600;
}

/* About Panel */
.about-panel {
    font-size: 0.875rem;
}

.about-text {
    color: var(--gray-700);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.about-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.feature-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--gray-500);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-message {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
}

.loading-progress {
    width: 300px;
    height: 6px;
    background: var(--gray-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transition: width var(--transition-base);
    border-radius: var(--radius-sm);
}

/* Error Overlay */
.error-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    backdrop-filter: blur(5px);
}

.error-content {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    text-align: center;
}

.error-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.error-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--error-color);
    margin-bottom: var(--spacing-md);
}

.error-message {
    color: var(--gray-700);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

/* Footer */
.app-footer {
    height: var(--footer-height);
    background: white;
    border-top: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.footer-content {
    text-align: center;
}

.footer-text {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.footer-text a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

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

/* Scrollbar Styling */
.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: var(--gray-100);
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--radius-sm);
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 1400px) {
    .sidebar {
        width: 280px;
    }
}

@media (max-width: 1200px) {
    .sidebar-right {
        display: none;
    }
}

@media (max-width: 900px) {
    .sidebar-left {
        position: absolute;
        left: -320px;
        z-index: 200;
        box-shadow: var(--shadow-xl);
        transition: left var(--transition-base);
    }

    .sidebar-left.open {
        left: 0;
    }
}

@media (max-width: 600px) {
    .app-title {
        font-size: 1.25rem;
    }

    .app-subtitle {
        display: none;
    }

    .header-content {
        padding: 0 var(--spacing-md);
    }
}

/* Leaflet Customization */
.leaflet-container {
    background: var(--gray-100);
}

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

.leaflet-control-zoom a {
    border: none;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-700);
    font-weight: 600;
}

.leaflet-control-zoom a:hover {
    background: var(--primary-color);
    color: white;
}

.leaflet-bar {
    border-radius: var(--radius-md);
}

/* Measurement Tools */
.measurement-info {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.info-text {
    font-size: 0.75rem;
    color: var(--gray-600);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.info-text:last-child {
    margin-bottom: 0;
}

.measurement-popup {
    font-size: 0.875rem;
}

.measurement-popup .leaflet-popup-content-wrapper {
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
}

.measurement-popup .leaflet-popup-content {
    margin: var(--spacing-sm);
    line-height: 1.5;
}

.measurement-popup .leaflet-popup-tip {
    background: var(--primary-color);
}

/* Crosshair cursor for measurements */
#map-container.measuring {
    cursor: crosshair;
}

/* Vector Layer Styles */
.vector-layer-controls {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.layer-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

.layer-toggle:last-child {
    border-bottom: none;
}

.layer-name {
    font-size: 0.875rem;
    color: var(--gray-700);
    font-weight: 500;
}

.layer-switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 20px;
}

.layer-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.layer-switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--gray-300);
    transition: var(--transition-fast);
    border-radius: 20px;
}

.layer-switch-slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: var(--transition-fast);
    border-radius: 50%;
}

.layer-switch input:checked + .layer-switch-slider {
    background-color: var(--primary-color);
}

.layer-switch input:checked + .layer-switch-slider:before {
    transform: translateX(20px);
}

/* Feature Popup Styles */
.feature-popup {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    max-width: 300px;
}

.feature-name {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
}

.feature-description {
    margin: 0 0 var(--spacing-md) 0;
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.5;
}

.feature-properties {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
}

.feature-properties tr {
    border-bottom: 1px solid var(--gray-100);
}

.feature-properties tr:last-child {
    border-bottom: none;
}

.feature-properties td {
    padding: var(--spacing-xs) 0;
}

.prop-key {
    color: var(--gray-600);
    font-weight: 600;
    padding-right: var(--spacing-sm);
    vertical-align: top;
}

.prop-value {
    color: var(--gray-900);
    word-break: break-word;
}

/* Leaflet Popup Customization for Features */
.leaflet-popup-content-wrapper {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.leaflet-popup-content {
    margin: var(--spacing-md);
}

.leaflet-popup-tip-container {
    z-index: 1;
}

/* Vector Format Badges */
.format-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.format-badge.geojson {
    background: #e3f2fd;
    color: #1976d2;
}

.format-badge.flatgeobuf {
    background: #fff3e0;
    color: #f57c00;
}

.format-badge.shapefile {
    background: #e8f5e9;
    color: #388e3c;
}

.format-badge.geoparquet {
    background: #f3e5f5;
    color: #7b1fa2;
}

/* Layer Legend */
.layer-legend {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.legend-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
}

.legend-symbol {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--gray-400);
}

.legend-label {
    font-size: 0.75rem;
    color: var(--gray-600);
}

/* Vector Layer Info Panel */
.vector-info-panel {
    font-size: 0.875rem;
}

.vector-info-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

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

.vector-info-label {
    color: var(--gray-600);
    font-weight: 500;
}

.vector-info-value {
    color: var(--gray-900);
    font-weight: 600;
}

/* ── Section hint text (Terrain Analysis, etc.) ───────────────────────────── */
.section-hint {
    font-size: 0.75rem;
    color: var(--gray-500);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

/* ── Drag & drop zone (local GeoTIFF, in-browser decode) ──────────────────── */
.drop-zone {
    margin-top: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-md);
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--gray-50);
    text-align: center;
    transition: all var(--transition-fast);
}

.drop-zone.drop-zone-hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.06);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.drop-zone-icon {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xs);
    opacity: 0.85;
}

.drop-zone-text {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--gray-700);
}

.drop-zone-or {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin: var(--spacing-xs) 0;
}

.drop-zone-btn {
    display: inline-flex;
    margin: 0 auto;
}

.file-input-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.drop-zone-note {
    font-size: 0.6875rem;
    color: var(--gray-500);
    margin-top: var(--spacing-sm);
    line-height: 1.4;
}

/* ── Terrain Analysis panel ───────────────────────────────────────────────── */
.terrain-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.terrain-btn {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-xs);
    font-size: 0.8125rem;
}

.terrain-btn-active {
    background: var(--primary-color);
    color: white;
}

.terrain-btn-active:hover {
    background: var(--primary-dark);
}

/* ── Honest network metric badges ─────────────────────────────────────────── */
.feature-badge-metric {
    background: var(--gray-700);
    font-variant-numeric: tabular-nums;
}