:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3a3a3a;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --accent-green: #4caf50;
    --accent-green-hover: #66bb6a;
    --accent-gray: #555555;
    --border-color: #444444;
    --telemetry-color: #4caf50;
    --schedule-color: #808080;
    --error-bg: #5c2626;
    --error-color: #ff6b6b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
}

header {
    text-align: center;
    padding: 30px 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 30px;
}

h1 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

main {
    flex: 1;
}

.form-section {
    background-color: var(--bg-secondary);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

.stop-select {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.stop-select:hover {
    border-color: var(--accent-green);
}

.stop-select:focus {
    outline: none;
    border-color: var(--accent-green);
}

.tram-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    margin-top: 10px;
}

.tram-checkbox-label {
    display: flex;
    align-items: center;
    padding: 10px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.tram-checkbox-label:hover {
    background-color: var(--bg-primary);
    border-color: var(--accent-green);
}

.tram-checkbox-label input[type="checkbox"] {
    margin-right: 8px;
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.monitoring-btn {
    width: 100%;
    padding: 20px;
    font-size: 1.5rem;
    font-weight: bold;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 25px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.monitoring-btn-off {
    background-color: var(--accent-gray);
    color: var(--text-muted);
}

.monitoring-btn-off:hover:not(:disabled) {
    background-color: #666666;
}

.monitoring-btn-on {
    background-color: var(--accent-green);
    color: white;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.monitoring-btn-on:hover {
    background-color: var(--accent-green-hover);
    box-shadow: 0 6px 16px rgba(76, 175, 80, 0.4);
}

.monitoring-btn:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.error-message {
    background-color: var(--error-bg);
    color: var(--error-color);
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid var(--error-color);
}

.results-section {
    background-color: var(--bg-secondary);
    padding: 25px;
    border-radius: 12px;
}

.results-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.results {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.tram-result {
    background-color: var(--bg-tertiary);
    padding: 15px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.tram-number {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-green);
    min-width: 60px;
}

.tram-times {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    flex: 1;
}

.time-badge {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
}

.time-telemetry {
    background-color: var(--telemetry-color);
    color: white;
}

.time-schedule {
    background-color: var(--bg-primary);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.no-arrivals {
    color: var(--text-muted);
    font-style: italic;
}

.legend {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.telemetry-badge {
    background-color: var(--telemetry-color);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.85rem;
}

.schedule-badge {
    background-color: var(--bg-primary);
    color: var(--text-muted);
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    font-weight: 500;
    font-size: 0.85rem;
}

footer {
    text-align: center;
    padding: 30px 20px;
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Searchable Dropdown */
.searchable-dropdown {
    position: relative;
    width: 100%;
}

.searchable-dropdown-input {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.searchable-dropdown-input:hover {
    border-color: var(--accent-green);
}

.searchable-dropdown-input:focus {
    outline: none;
    border-color: var(--accent-green);
    cursor: text;
}

.searchable-dropdown-input::placeholder {
    color: var(--text-muted);
}

.searchable-dropdown-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 4px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.searchable-dropdown-list::-webkit-scrollbar {
    width: 8px;
}

.searchable-dropdown-list::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: 4px;
}

.searchable-dropdown-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.searchable-dropdown-list::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gray);
}

.searchable-dropdown-item {
    padding: 12px 15px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.searchable-dropdown-item:hover,
.searchable-dropdown-item.highlighted {
    background-color: var(--bg-primary);
}

.searchable-dropdown-item.selected {
    background-color: var(--bg-primary);
    color: var(--accent-green);
}

.searchable-dropdown-empty {
    padding: 12px 15px;
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
}

.searchable-dropdown-hidden {
    display: none;
}

/* Add Stop Form */
.add-stop-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.add-stop-btn {
    width: 100%;
    padding: 12px 20px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.add-stop-btn:hover {
    background-color: var(--bg-primary);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.add-stop-form {
    margin-top: 15px;
    padding: 20px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.add-stop-form .form-group {
    margin-bottom: 15px;
}

.add-stop-form input,
.add-stop-form select {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
}

.add-stop-form input:focus,
.add-stop-form select:focus {
    outline: none;
    border-color: var(--accent-green);
}

.add-stop-form input::placeholder {
    color: var(--text-muted);
}

.add-stop-form-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.add-stop-form-buttons button {
    flex: 1;
    padding: 10px 15px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-save {
    background-color: var(--accent-green);
    color: white;
}

.btn-save:hover {
    background-color: var(--accent-green-hover);
}

.btn-save:disabled {
    background-color: var(--accent-gray);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-cancel {
    background-color: var(--accent-gray);
    color: var(--text-primary);
}

.btn-cancel:hover {
    background-color: #666666;
}

.add-stop-instructions {
    margin-top: 15px;
    padding: 15px;
    background-color: var(--bg-primary);
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.add-stop-instructions h4 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.add-stop-instructions ol {
    margin-left: 20px;
}

.add-stop-instructions li {
    margin-bottom: 6px;
}

.add-stop-instructions code {
    background-color: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
}

.notification {
    padding: 12px 15px;
    border-radius: 6px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.notification-success {
    background-color: rgba(76, 175, 80, 0.2);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
}

.notification-error {
    background-color: var(--error-bg);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

.notification-hidden {
    display: none;
}

/* Mobile responsiveness */
@media (max-width: 600px) {
    .container {
        padding: 15px;
    }

    h1 {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .form-section {
        padding: 20px;
    }

    .monitoring-btn {
        font-size: 1.2rem;
        padding: 18px;
    }

    .tram-checkboxes {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 10px;
    }

    .tram-result {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .legend {
        flex-direction: column;
        gap: 10px;
    }

    .searchable-dropdown-list {
        max-height: 250px;
    }

    .add-stop-form {
        padding: 15px;
    }

    .add-stop-form-buttons {
        flex-direction: column;
    }
}