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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.search-container {
    background-color: #fff;
    padding: 1rem 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.search-form {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: #555;
}

.form-group input {
    padding: 0.5rem 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    min-width: 150px;
}

.form-group input:focus {
    outline: none;
    border-color: #1976d2;
    box-shadow: 0 0 0 2px rgba(25, 118, 210, 0.1);
}

.search-btn {
    padding: 0.5rem 1.5rem;
    background-color: #1976d2;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.search-btn:hover {
    background-color: #1565c0;
}

.search-btn:disabled {
    background-color: #90caf9;
    cursor: not-allowed;
}

.content-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.routes-panel {
    width: 350px;
    background-color: #fff;
    border-right: 1px solid #ddd;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.routes-panel h2 {
    padding: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
    border-bottom: 1px solid #eee;
    background-color: #f9f9f9;
}

.routes-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.empty-message {
    padding: 2rem;
    text-align: center;
    color: #888;
}

.route-card {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: box-shadow 0.2s, border-color 0.2s;
}

.route-card:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-color: #1976d2;
}

.route-card.selected {
    border-color: #1976d2;
    background-color: #e3f2fd;
}

.route-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.route-duration {
    font-weight: 600;
    color: #2c3e50;
}

.route-transfers {
    font-size: 0.875rem;
    color: #666;
}

.route-cost {
    font-weight: 600;
    color: #27ae60;
}

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

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #1976d2;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.loading-overlay p {
    color: white;
    font-size: 1rem;
}

.error-message {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background-color: #e74c3c;
    color: white;
    padding: 1rem;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    z-index: 1001;
    max-width: 400px;
}

.error-message.hidden {
    display: none;
}

/* Leaflet popup styling */
.leaflet-popup-content {
    min-width: 200px;
}

.leaflet-popup-content h4 {
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.leaflet-popup-content p {
    margin: 0.25rem 0;
    font-size: 0.875rem;
}

/* Transport type colors */
.transport-plane {
    color: #ff9800;
}

.transport-train {
    color: #1976d2;
}

.transport-bus {
    color: #cddc39;
}

/* Responsive layout */
@media (max-width: 768px) {
    .content-container {
        flex-direction: column;
    }

    .routes-panel {
        width: 100%;
        height: 40%;
        border-right: none;
        border-bottom: 1px solid #ddd;
    }

    .map-panel {
        height: 60%;
    }

    .search-form {
        flex-direction: column;
        align-items: stretch;
    }

    .form-group {
        width: 100%;
    }

    .form-group input {
        width: 100%;
    }
}