* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }

#header {
    background: #1a1a3e;
    color: white;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    height: 44px;
}
#header h1 { font-size: 1.1rem; }
#header nav { display: flex; gap: 12px; }
#header nav a {
    color: #aaa;
    text-decoration: none;
    font-size: 0.85rem;
    padding: 4px 8px;
    border-radius: 4px;
}
#header nav a.active, #header nav a:hover { color: white; background: #2a2a5e; }
#header select {
    margin-left: auto;
    padding: 4px 8px;
    border-radius: 4px;
    border: none;
    font-size: 0.8rem;
    background: #2a2a4e;
    color: white;
    cursor: pointer;
}

#layout {
    display: flex;
    height: calc(100vh - 44px);
    position: relative;
}

#sidebar {
    width: 340px;
    overflow-y: auto;
    background: #f8f9fa;
    border-right: 1px solid #dee2e6;
    display: flex;
    flex-direction: column;
}

#map { flex: 1; position: relative; }

/* --- Panels --- */
.panel {
    padding: 12px;
    border-bottom: 1px solid #dee2e6;
}
.panel h3 {
    font-size: 0.8rem;
    color: #495057;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-bottom: 6px;
}
.stat-card {
    background: white;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    padding: 6px;
    text-align: center;
}
.stat-card.warn { border-color: #ffc107; background: #fff8e1; }
.stat-card.ok { border-color: #28a745; background: #e8f5e9; }
.stat-card.ok .stat-value { color: #1b5e20; }
.stat-value { display: block; font-size: 1.3rem; font-weight: 700; color: #1a1a3e; }
.stat-card.warn .stat-value { color: #e65100; }
.stat-label { font-size: 0.65rem; color: #6c757d; text-transform: uppercase; }

.text-muted { font-size: 0.75rem; color: #6c757d; }
.badge {
    background: #6c757d;
    color: white;
    padding: 1px 6px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: normal;
}

.form-group { margin-bottom: 6px; }
.form-group label { display: block; font-size: 0.7rem; color: #6c757d; margin-bottom: 2px; }
.form-group select, .form-group input {
    width: 100%;
    padding: 4px 8px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 0.82rem;
}

/* --- Route list --- */
#relations-panel { flex: 1; overflow-y: auto; }
#relations-list { display: flex; flex-direction: column; gap: 3px; }

.rel-item {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 5px;
    padding: 7px 10px;
    cursor: pointer;
    transition: all 0.15s;
}
.rel-item:hover { border-color: #4a90d9; background: #f8f9ff; }
.rel-item.active { border-color: #4a90d9; background: #e8f0fe; border-width: 2px; }

.rel-header {
    display: flex;
    align-items: center;
    gap: 6px;
}
.rel-color {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    display: inline-block;
}
.rel-ref {
    font-weight: 700;
    font-size: 0.82rem;
    color: #1a1a3e;
    white-space: nowrap;
}
.rel-from-to {
    font-size: 0.75rem;
    color: #6c757d;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.rel-meta {
    display: flex;
    gap: 4px;
    margin-top: 3px;
    flex-wrap: wrap;
}
.rel-tag {
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.6rem;
    font-weight: 600;
    background: #eee;
    color: #555;
}
.rel-tag.warn { background: #fff3cd; color: #856404; }
.rel-tag.ok { background: #d4edda; color: #155724; }
.rel-tag.op { background: #e2e3f1; color: #383d6e; }
.rel-tag.error { background: #f8d7da; color: #721c24; }

/* --- Detail panel --- */
#detail-panel {
    position: absolute;
    right: 0;
    top: 0;
    width: 350px;
    height: 100%;
    background: white;
    border-left: 3px solid #4a90d9;
    box-shadow: -4px 0 16px rgba(0,0,0,0.12);
    overflow-y: auto;
    padding: 14px;
    z-index: 1000;
}
#detail-panel h3 {
    font-size: 0.95rem;
    color: #1a1a3e;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.close-btn {
    position: absolute;
    top: 8px;
    right: 12px;
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: #6c757d;
    line-height: 1;
}
.close-btn:hover { color: #000; }

.detail-section { margin-bottom: 14px; }
.detail-section h4 {
    font-size: 0.7rem;
    color: #6c757d;
    text-transform: uppercase;
    margin-bottom: 4px;
    border-bottom: 1px solid #eee;
    padding-bottom: 2px;
    letter-spacing: 0.3px;
}
.detail-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    padding: 2px 0;
}
.detail-row .label { color: #6c757d; }
.detail-row .value { color: #212529; font-weight: 500; text-align: right; max-width: 60%; }
.text-warn { color: #e65100 !important; }

.action-btn {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    background: #f0f0f0;
    color: #333;
    border: 1px solid #ddd;
    cursor: pointer;
    transition: background 0.15s;
}
.action-btn:hover { background: #e0e0e0; }

.tag-list {
    font-size: 0.72rem;
    max-height: 180px;
    overflow-y: auto;
    background: #f8f9fa;
    border-radius: 4px;
    padding: 4px 6px;
}
.tag-row {
    display: flex;
    gap: 6px;
    padding: 1px 0;
    border-bottom: 1px solid #f0f0f0;
}
.tag-row:last-child { border-bottom: none; }
.tag-key { color: #4a90d9; min-width: 80px; font-weight: 500; }
.tag-val { color: #333; word-break: break-word; }

/* --- Error list --- */
.error-list {
    background: #fff8e1;
    border: 1px solid #ffe082;
    border-radius: 4px;
    padding: 6px 8px;
}
.error-item {
    font-size: 0.78rem;
    color: #856404;
    padding: 2px 0;
    border-bottom: 1px solid #fff3cd;
}
.error-item:last-child { border-bottom: none; }
.error-item::before { content: '\26A0 '; }

/* --- Map overlays --- */
#map-loading {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: #1a1a3e;
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.gap-marker { background: transparent !important; border: none !important; }
.gap-icon {
    background: #e74c3c;
    color: white;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 3px;
    text-align: center;
    box-shadow: 0 1px 4px rgba(0,0,0,0.4);
    white-space: nowrap;
}

.map-error {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: #e74c3c;
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    z-index: 1000;
}