:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --danger-color: #dc2626;
    --success-color: #16a34a;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

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

section {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

section h2 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.section-hint {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 15px;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--text-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

.btn-primary:disabled {
    background-color: var(--secondary-color);
    cursor: not-allowed;
}

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

.btn-secondary:hover {
    background-color: #475569;
}

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

.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
    padding: 0;
    font-size: inherit;
}

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

.btn-large {
    padding: 15px 40px;
    font-size: 1.2rem;
}

.btn-demo {
    color: white;
    padding: 8px 14px;
    font-size: 0.85rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    min-width: 100px;
}

.btn-demo:hover {
    transform: translateY(-1px);
}

.btn-demo.btn-summer {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    box-shadow: 0 2px 6px rgba(245, 158, 11, 0.3);
}

.btn-demo.btn-summer:hover {
    background: linear-gradient(135deg, #d97706, #b45309);
    box-shadow: 0 4px 10px rgba(245, 158, 11, 0.4);
}

.btn-demo.btn-winter {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    box-shadow: 0 2px 6px rgba(14, 165, 233, 0.3);
}

.btn-demo.btn-winter:hover {
    background: linear-gradient(135deg, #0284c7, #0369a1);
    box-shadow: 0 4px 10px rgba(14, 165, 233, 0.4);
}

.demo-badge {
    font-size: 0.65rem;
    opacity: 0.9;
    font-weight: normal;
}

.demo-banner {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 15px 20px;
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid #e2e8f0;
}

.demo-title {
    font-weight: 600;
    color: #334155;
    font-size: 1rem;
}

.demo-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.demo-group-label {
    font-weight: 600;
    color: #64748b;
    font-size: 0.9rem;
    min-width: 50px;
}

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

.action-section {
    text-align: center;
    margin: 30px 0;
}

.action-hint {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Import Section */
.import-area {
    margin-bottom: 20px;
}

.file-drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
}

.file-drop-zone:hover,
.file-drop-zone.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.05);
}

.drop-content {
    pointer-events: none;
}

.drop-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 10px;
}

.drop-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 10px;
}

.import-status {
    padding: 10px 15px;
    border-radius: 6px;
    margin-top: 10px;
    font-weight: 500;
}

.import-status.success {
    background-color: #dcfce7;
    color: #166534;
}

.import-status.error {
    background-color: #fee2e2;
    color: #991b1b;
}

.column-mapping {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}

.column-mapping h3 {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

/* Venue Section */
.venue-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.venue-list {
    max-height: 500px;
    overflow-y: auto;
}

.venue-item {
    display: grid;
    grid-template-columns: 50px 1fr 200px auto;
    gap: 12px;
    align-items: center;
    padding: 12px;
    background: var(--bg-color);
    border-radius: 8px;
    margin-bottom: 8px;
    border: 1px solid var(--border-color);
}

.venue-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.venue-code-cell {
    display: flex;
    justify-content: center;
}

.venue-code-badge {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: white;
    border-radius: 8px;
    font-weight: bold;
    font-size: 1.1rem;
}

.venue-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.venue-info input {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9rem;
}

.venue-name-input {
    font-weight: 500;
}

.venue-address-input {
    font-size: 0.85rem !important;
    color: var(--text-muted);
}

.venue-coords {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.venue-coords input {
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.85rem;
    width: 100%;
}

.venue-actions-cell {
    display: flex;
    gap: 8px;
    align-items: center;
}

.btn-map {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--success-color);
    color: white;
    border-radius: 6px;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.2s;
}

.btn-map:hover {
    background: #15803d;
    transform: scale(1.05);
}

.venue-item .btn-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
}

.venue-item .btn-remove:hover {
    background: var(--danger-color);
    color: white;
}

/* Groups Section */
.group-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.group-tab {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: white;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.group-tab:hover {
    border-color: var(--primary-color);
}

.group-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.group-content {
    background: var(--bg-color);
    border-radius: 8px;
    padding: 15px;
    min-height: 200px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

.group-detail .group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.group-detail .group-meta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.venue-badge {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
}

.venue-badge.configured {
    background: #dcfce7;
    color: #166534;
}

.venue-badge.missing {
    background: #fee2e2;
    color: #991b1b;
}

.venue-map-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 4px 10px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 12px;
    transition: all 0.2s;
}

.venue-map-link:hover {
    background: var(--primary-color);
    color: white;
}

.venue-address-display {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 15px;
    padding: 8px 12px;
    background: white;
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
}

.pickup-table {
    border-radius: 6px;
    overflow: hidden;
    max-height: 300px;
    overflow-y: auto;
}

.pickup-header,
.pickup-row {
    display: grid;
    grid-template-columns: 50px 150px 1fr 120px;
    gap: 10px;
    padding: 10px 15px;
}

.pickup-header {
    background: var(--primary-color);
    color: white;
    font-weight: 500;
    position: sticky;
    top: 0;
}

.pickup-row {
    background: white;
    border-bottom: 1px solid var(--border-color);
}

.pickup-row:hover {
    background: #f1f5f9;
}

.pickup-seq {
    text-align: center;
    font-weight: bold;
}

.pickup-address {
    font-size: 0.85rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Results Section */
.results-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.result-tab {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: white;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.result-tab:hover {
    border-color: var(--primary-color);
}

.result-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.result-tab.success .status-icon {
    color: var(--success-color);
}

.result-tab.error .status-icon {
    color: var(--danger-color);
}

.result-tab.active .status-icon {
    color: white;
}

.group-result-card {
    background: var(--bg-color);
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
    border-left: 4px solid var(--success-color);
    cursor: pointer;
    transition: all 0.2s;
}

.group-result-card:hover {
    box-shadow: var(--shadow-lg);
}

.group-result-card.error {
    border-left-color: var(--danger-color);
}

.group-result-header {
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.group-result-header h3 {
    margin: 0;
    font-size: 1rem;
}

.group-result-meta {
    display: flex;
    gap: 15px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.view-detail {
    color: var(--primary-color);
    font-weight: 500;
}

.error-message {
    color: var(--danger-color);
}

.error-banner {
    background: #fee2e2;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.error-banner h3 {
    color: var(--danger-color);
    margin-bottom: 10px;
}

/* Missing Coordinates Error Display */
.missing-coords-list {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
    text-align: left;
}

.missing-coords-list h4 {
    color: var(--warning-color);
    margin-bottom: 15px;
    font-size: 1rem;
}

.error-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.error-table thead {
    background: var(--bg-color);
}

.error-table th,
.error-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.error-table th {
    font-weight: 600;
    color: var(--text-muted);
}

.error-table th:first-child,
.error-table td:first-child {
    width: 50px;
    text-align: center;
}

.error-table tbody tr:hover {
    background: #fef2f2;
}

.error-table tbody tr:nth-child(even) {
    background: var(--bg-color);
}

.error-table tbody tr:nth-child(even):hover {
    background: #fef2f2;
}

.summary-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
}

.export-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Loading & Progress */
.hidden {
    display: none !important;
}

.loading {
    position: fixed;
    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;
    z-index: 1000;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.progress-bar {
    width: 300px;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 20px;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Summary Cards */
.summary-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.summary-item {
    background: var(--bg-color);
    padding: 15px;
    border-radius: 8px;
    text-align: center;
}

.summary-item .value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.summary-item .label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.summary-item.success .value {
    color: var(--success-color);
}

.summary-item.warning .value {
    color: var(--warning-color);
}

/* Route Cards */
.routes-container {
    display: grid;
    gap: 15px;
    margin-bottom: 20px;
}

.route-card {
    background: var(--bg-color);
    border-radius: 8px;
    overflow: hidden;
}

.route-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: var(--primary-color);
    color: white;
    cursor: pointer;
}

.route-header h3 {
    font-size: 1.1rem;
    margin: 0;
}

.route-meta {
    display: flex;
    gap: 15px;
    font-size: 0.9rem;
}

.route-body {
    padding: 15px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.route-card.expanded .route-body {
    max-height: 500px;
}

.stop-list {
    list-style: none;
}

.stop-item {
    display: flex;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

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

.stop-sequence {
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: 15px;
    flex-shrink: 0;
}

.stop-info {
    flex: 1;
    min-width: 0;
}

.stop-name {
    font-weight: 500;
}

.stop-passenger {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stop-times {
    text-align: right;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.stop-arrival {
    font-weight: 500;
}

.stop-departure {
    color: var(--text-muted);
}

.destination-row {
    background: var(--success-color);
    color: white;
    border-radius: 6px;
    margin-top: 10px;
}

.destination-row .stop-sequence {
    background: white;
    color: var(--success-color);
}

.destination-row .stop-passenger {
    color: rgba(255, 255, 255, 0.8);
}

/* Map */
.map-container {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 15px;
    box-shadow: var(--shadow);
}

.map-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.map-controls .btn {
    padding: 8px 16px;
    font-size: 0.9rem;
}

#map {
    width: 100%;
    height: 600px;
    border-radius: 8px;
    background: var(--bg-color);
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.feasible-yes {
    color: #86efac;
}

.feasible-no {
    color: #fca5a5;
}

/* Validation Section */
.validation-section {
    border: 2px solid var(--primary-color);
}

.validation-section h2 {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.status-success {
    color: var(--success-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.status-warning {
    color: var(--warning-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.validation-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.validation-summary {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.validation-stat {
    background: var(--bg-color);
    padding: 15px 25px;
    border-radius: 8px;
    text-align: center;
    min-width: 100px;
}

.validation-stat .stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
}

.validation-stat.success .stat-value {
    color: var(--success-color);
}

.validation-stat.error .stat-value {
    color: var(--danger-color);
}

.validation-stat .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.validation-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.validation-filter-tab {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: white;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.validation-filter-tab:hover {
    border-color: var(--primary-color);
}

.validation-filter-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.validation-table-container {
    overflow-x: auto;
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.validation-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    min-width: 800px;
}

.validation-table thead {
    background: var(--primary-color);
    color: white;
    position: sticky;
    top: 0;
    z-index: 1;
}

.validation-table th {
    padding: 12px 10px;
    text-align: left;
    font-weight: 500;
}

.validation-table td {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

.validation-table tbody tr:hover {
    background: #f1f5f9;
}

.validation-table tbody tr.status-missing {
    background: #fef2f2;
}

.validation-table tbody tr.status-missing:hover {
    background: #fee2e2;
}

.validation-table tbody tr.status-ok {
    background: white;
}

.status-cell {
    width: 50px;
    text-align: center;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-weight: bold;
}

.status-badge.status-ok {
    background: var(--success-color);
    color: white;
}

.status-badge.status-missing {
    background: var(--danger-color);
    color: white;
}

.address-cell {
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.coord-input {
    width: 100px;
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.85rem;
}

.coord-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.action-cell {
    display: flex;
    gap: 5px;
}

.btn-sm {
    padding: 5px 8px;
    font-size: 0.85rem;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

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

.btn-view:hover {
    background: #15803d;
}

.validation-map-container {
    margin-top: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

#validationMap {
    width: 100%;
    height: 400px;
    background: var(--bg-color);
}

/* Responsive */
@media (max-width: 1024px) {
    .venue-item {
        grid-template-columns: 50px 1fr auto;
    }

    .venue-coords {
        display: none;
    }
}

@media (max-width: 768px) {
    .venue-item {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .venue-code-cell {
        justify-content: flex-start;
    }

    .venue-code-badge {
        width: auto;
        padding: 0 12px;
    }

    .venue-actions-cell {
        justify-content: flex-end;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .route-meta {
        flex-direction: column;
        gap: 5px;
    }

    .pickup-header,
    .pickup-row {
        grid-template-columns: 40px 1fr;
    }

    .pickup-address,
    .pickup-phone {
        display: none;
    }

    .group-result-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .results-tabs {
        flex-direction: column;
    }

    .result-tab {
        width: 100%;
        justify-content: center;
    }
}