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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    height: 100vh;
    overflow: hidden;
}

.container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 350px;
    background: #f8f9fa;
    padding: 20px;
    overflow-y: auto;
    border-right: 1px solid #dee2e6;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.sidebar h1 {
    font-size: 24px;
    margin-bottom: 5px;
    color: #2c3e50;
}

.subtitle {
    font-size: 14px;
    color: #6c757d;
    margin-bottom: 25px;
}

.sidebar h3 {
    font-size: 16px;
    margin: 20px 0 10px;
    color: #495057;
}

.sidebar h4 {
    font-size: 14px;
    margin: 15px 0 8px;
    color: #495057;
}

/* Config */
.config-section {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #dee2e6;
}

.config-section details summary {
    font-weight: 500;
    color: #6c757d;
}

.config-section details[open] {
    margin-bottom: 10px;
}

/* Search */
.search-section {
    margin-bottom: 20px;
}

#station-search {
    width: 100%;
    padding: 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 14px;
}

#station-search:focus {
    outline: none;
    border-color: #0080ff;
}

.search-results {
    max-height: 200px;
    overflow-y: auto;
    margin-top: 8px;
}

.search-result-item {
    padding: 8px;
    border: 1px solid #e9ecef;
    background: white;
    cursor: pointer;
    font-size: 13px;
    margin-bottom: 4px;
    border-radius: 3px;
    transition: background 0.2s;
}

.search-result-item:hover {
    background: #e7f3ff;
}

/* Selected station */
.selected-station {
    background: #e7f3ff;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 15px;
}

#station-name {
    font-weight: 600;
    color: #0080ff;
    margin-bottom: 8px;
}

#clear-selection {
    padding: 6px 12px;
    background: white;
    border: 1px solid #ced4da;
    border-radius: 3px;
    cursor: pointer;
    font-size: 12px;
}

#clear-selection:hover {
    background: #f8f9fa;
}

/* Time controls */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.checkbox-group label {
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-primary {
    width: 100%;
    padding: 12px;
    background: #0080ff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: #0066cc;
}

.btn-primary:disabled {
    background: #ced4da;
    cursor: not-allowed;
}

/* Legend */
.legend {
    background: white;
    padding: 12px;
    border-radius: 4px;
    border: 1px solid #dee2e6;
    margin-bottom: 15px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    font-size: 13px;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 3px;
    border: 1px solid #999;
}

/* Stats */
.stats {
    background: white;
    padding: 12px;
    border-radius: 4px;
    border: 1px solid #dee2e6;
    margin-bottom: 15px;
}

#stats-content {
    font-size: 13px;
    line-height: 1.6;
}

/* Info */
.info {
    background: #fff3cd;
    padding: 12px;
    border-radius: 4px;
    border: 1px solid #ffeaa7;
    font-size: 13px;
    line-height: 1.6;
}

.info ol {
    margin-left: 20px;
    margin-top: 8px;
}

.info li {
    margin-bottom: 4px;
}

.data-source {
    margin-top: 12px;
    font-size: 11px;
    color: #6c757d;
}

.data-source a {
    color: #0080ff;
}

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

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

/* Loading */
.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    text-align: center;
    z-index: 1000;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #0080ff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

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

/* Scrollbar */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.sidebar::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: #555;
}