/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0066cc;
    --primary-hover: #0052a3;
    --secondary-color: #6c757d;
    --secondary-hover: #5a6268;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --bg-color: #f8f9fa;
    --sidebar-bg: #ffffff;
    --border-color: #dee2e6;
    --text-color: #333;
    --text-muted: #666;
    --sidebar-width: 320px;
    --header-height: 50px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    line-height: 1.4;
}

/* App container - full viewport */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

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

.app-header h1 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
}

.header-controls {
    display: flex;
    gap: 16px;
    font-size: 13px;
}

.header-controls label {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    color: var(--text-muted);
}

.header-controls label:hover {
    color: var(--text-color);
}

.header-controls input[type="checkbox"] {
    cursor: pointer;
}

/* Main content area */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

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

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
    flex-shrink: 0;
}

.sidebar-section {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-section:last-child {
    border-bottom: none;
}

.sidebar-section h3 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

/* Route inputs */
.route-inputs {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.route-input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.route-input-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
}

.route-input-container {
    position: relative;
}

.route-input-container input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

.route-input-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.1);
}

.route-options {
    margin-top: 4px;
}

.option-label {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.route-buttons {
    display: flex;
    gap: 8px;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    flex: 1;
}

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

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

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

.btn-export {
    width: 100%;
    background-color: #17a2b8;
    color: white;
}

.btn-export:hover {
    background-color: #138496;
}

/* Route results */
.route-results {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-color);
    border-radius: 4px;
    font-size: 13px;
}

.route-results strong {
    color: var(--text-color);
}

.route-meta {
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-muted);
}

.route-status {
    margin-top: 8px;
    font-size: 12px;
    color: var(--primary-color);
}

/* Search container */
.search-container {
    position: relative;
}

.search-container input,
#port-search {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

.search-container input:focus,
#port-search:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.1);
}

/* Search results dropdown */
.search-results {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 250px;
    overflow-y: auto;
    background: white;
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 4px 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
}

.search-result-item {
    padding: 10px 12px;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f0;
    font-size: 13px;
}

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

.search-result-item:hover {
    background-color: #f0f7ff;
}

.search-result-item strong {
    color: var(--primary-color);
}

.search-country {
    color: #999;
    font-size: 11px;
}

/* Loading status */
.loading-status {
    display: block;
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.loading-status.loading {
    color: var(--primary-color);
}

.loading-status.loading::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 6px;
    border: 2px solid var(--primary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    vertical-align: middle;
}

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

.loading-status.done {
    color: var(--success-color);
}

/* Collapsible sections */
.collapsible-header {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    user-select: none;
}

.collapsible-header:hover {
    color: var(--text-color);
}

.collapse-icon {
    font-size: 10px;
    transition: transform 0.2s;
}

.collapsible-content {
    margin-top: 12px;
}

.collapsible.collapsed .collapsible-content {
    display: none;
}

.collapsible.collapsed .collapse-icon {
    transform: rotate(-90deg);
}

/* Filter groups */
.filter-group {
    margin-bottom: 12px;
}

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

.filter-group label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.filter-group select,
.filter-group input[type="number"] {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 13px;
}

.filter-group.small input {
    width: 100%;
}

.filter-row {
    display: flex;
    gap: 8px;
}

.filter-row .filter-group {
    flex: 1;
}

.facility-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 12px;
}

.facility-filters label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    cursor: pointer;
    margin-bottom: 0;
}

/* Bottom panel */
.bottom-panel {
    background: var(--sidebar-bg);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* WKT Panel */
.wkt-panel,
.attributions-panel {
    border-bottom: 1px solid var(--border-color);
}

.wkt-panel:last-child,
.attributions-panel:last-child {
    border-bottom: none;
}

.wkt-panel summary,
.attributions-panel summary {
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
}

.wkt-panel summary:hover,
.attributions-panel summary:hover {
    color: var(--text-color);
    background: var(--bg-color);
}

.wkt-content {
    padding: 0 16px 16px;
}

.wkt-content textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    resize: vertical;
    min-height: 80px;
}

.wkt-content textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.wkt-buttons {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.wkt-buttons .btn {
    padding: 6px 12px;
}

/* Attributions */
.attributions-content {
    padding: 0 16px 16px;
}

.attributions-content ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 6px;
    font-size: 12px;
    color: var(--text-muted);
}

.attributions-content a {
    color: var(--primary-color);
    text-decoration: none;
}

.attributions-content a:hover {
    text-decoration: underline;
}

/* Port popup styles */
.port-popup-container .leaflet-popup-content {
    margin: 10px 12px;
    line-height: 1.4;
}

.port-popup-container .leaflet-popup-content-wrapper {
    border-radius: 6px;
}

.port-popup {
    font-size: 13px;
    min-width: 140px;
}

.port-popup b {
    font-size: 14px;
}

.port-popup small {
    font-size: 11px;
}

.port-popup .port-actions {
    display: flex;
    gap: 4px;
}

/* Port action buttons */
.port-action-btn {
    padding: 4px 8px;
    font-size: 11px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

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

.port-action-btn.adjust-btn:hover {
    background-color: var(--primary-hover);
}

.port-action-btn.revert-btn {
    background-color: var(--danger-color);
    color: white;
}

.port-action-btn.save-edit-btn {
    background-color: var(--success-color);
    color: white;
}

.port-action-btn.cancel-edit-btn {
    background-color: var(--secondary-color);
    color: white;
}

/* Responsive adjustments */
@media (max-width: 900px) {
    .main-content {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        max-height: 40vh;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }

    .map-container {
        min-height: 50vh;
    }

    .header-controls {
        display: none;
    }
}

@media (max-width: 600px) {
    .app-header h1 {
        font-size: 16px;
    }

    .sidebar-section {
        padding: 12px;
    }

    .attributions-content ul {
        grid-template-columns: 1fr;
    }
}