* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: system-ui, -apple-system, sans-serif; display: flex; flex-direction: column; height: 100vh; }

/* Header */
#header {
    background: #1a1a2e;
    color: white;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    z-index: 1000;
}
#header h1 { font-size: 1.1rem; font-weight: 600; }
#header .subtitle { font-size: 0.8rem; opacity: 0.6; }
#header .mode-indicator {
    margin-left: auto;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}
#header .mode-indicator.stop-mode { background: #e74c3c; }
#header .mode-indicator.waypoint-mode { background: #3498db; }

/* Main layout */
#main { display: flex; flex: 1; overflow: hidden; }

/* Sidebar */
#sidebar {
    width: 300px;
    background: #f8f9fa;
    border-right: 1px solid #dee2e6;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex-shrink: 0;
}
.panel {
    padding: 14px;
    border-bottom: 1px solid #dee2e6;
}
.panel h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: #495057;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.form-group { margin-bottom: 10px; }
.form-group label {
    display: block;
    font-size: 0.78rem;
    color: #6c757d;
    margin-bottom: 3px;
}
.form-group input, .form-group select {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 0.85rem;
}
.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: #4a90d9;
    box-shadow: 0 0 0 2px rgba(74,144,217,0.2);
}
.form-row { display: flex; gap: 8px; }
.form-row .form-group { flex: 1; }

/* Stop list */
#stop-list { list-style: none; }
#stop-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    margin-bottom: 4px;
    font-size: 0.82rem;
}
#stop-list li .stop-number {
    background: #e74c3c;
    color: white;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    flex-shrink: 0;
}
#stop-list li .stop-number.waypoint {
    background: #3498db;
    width: 16px;
    height: 16px;
    font-size: 0.6rem;
}
#stop-list li .stop-name {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    font-size: 0.78rem;
    padding: 2px 4px;
    border-radius: 3px;
    text-overflow: ellipsis;
    overflow: hidden;
}
#stop-list li .stop-name:focus {
    background: #fff3cd;
    outline: none;
}
#stop-list li .stop-btn {
    cursor: pointer;
    color: #6c757d;
    font-size: 0.75rem;
    border: 1px solid #dee2e6;
    background: white;
    padding: 2px 6px;
    border-radius: 3px;
    flex-shrink: 0;
}
#stop-list li .stop-btn:hover { background: #e9ecef; }
#stop-list li .stop-btn:disabled { opacity: 0.3; cursor: default; }
#stop-list li .stop-btn.delete-btn {
    color: #dc3545;
    border-color: #f5c6cb;
    background: #fff5f5;
    font-size: 0.85rem;
    font-weight: 700;
}
#stop-list li .stop-btn.delete-btn:hover { background: #dc3545; color: white; }

/* Buttons */
.btn {
    display: block;
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 6px;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: #4a90d9; color: white; }
.btn-primary:hover:not(:disabled) { background: #357abd; }
.btn-success { background: #28a745; color: white; }
.btn-success:hover:not(:disabled) { background: #218838; }
.btn-danger { background: #dc3545; color: white; }
.btn-danger:hover:not(:disabled) { background: #c82333; }
.btn-outline {
    background: white;
    color: #495057;
    border: 1px solid #ced4da;
}
.btn-outline:hover:not(:disabled) { background: #e9ecef; }

/* Status bar */
#status {
    padding: 8px 14px;
    font-size: 0.78rem;
    color: #6c757d;
    border-top: 1px solid #dee2e6;
    background: white;
    margin-top: auto;
}
#status.error { color: #dc3545; background: #fff5f5; }
#status.success { color: #28a745; background: #f0fff4; }
#status.loading { color: #4a90d9; }

/* Map */
#map { flex: 1; }

/* Custom map markers */
.stop-marker {
    background: #e74c3c;
    color: white;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    border: 2px solid white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
.waypoint-marker {
    background: #3498db;
    border-radius: 50%;
    width: 14px;
    height: 14px;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* Instructions overlay */
#instructions {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.75);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.8rem;
    z-index: 999;
    pointer-events: none;
    white-space: nowrap;
}