body {
    margin: 0;
    overflow: hidden;
    background-color: #2c3e50;
    font-family: 'Courier New', Courier, monospace;
    user-select: none;
}

.panel {
    position: absolute;
    background: rgba(20, 30, 40, 0.85);
    padding: 20px;
    border-radius: 8px;
    color: #ecf0f1;
    box-shadow: 0px 4px 10px rgba(0,0,0,0.5);
    border: 1px solid #34495e;
    z-index: 10;
}

#ui { top: 15px; left: 15px; width: 260px; }

/* New Menus */
#selectionMenu { top: 15px; left: 320px; width: 220px; }
#componentPanel { top: 15px; right: 15px; width: 200px; max-height: 400px; overflow-y: auto; }

.hidden { display: none !important; }

h2 { margin-top: 0; font-size: 20px; }
.subtitle { font-size: 12px; color: #95a5a6; margin-top: -10px; }

.tool-row { display: flex; flex-wrap: wrap; gap: 5px; }

button {
    flex-grow: 1;
    padding: 8px 5px;
    cursor: pointer;
    border-radius: 4px;
    font-family: inherit;
    font-weight: bold;
    transition: 0.2s;
    border: 1px solid transparent;
    font-size: 12px;
}

.active { background-color: #27ae60; color: white; border: 1px solid #2ecc71; }
.inactive { background-color: #34495e; color: #bdc3c7; border: 1px solid #2c3e50; }
.inactive:hover { background-color: #465c71; color: white; }

.shape-btn {
    width: 48px; height: 48px; padding: 0;
    background-color: #34495e; border: 2px solid #2c3e50;
    border-radius: 4px; background-size: cover; background-position: center;
}
.shape-btn.active { border-color: #f1c40f; background-color: #465c71; }

input[type="color"] { cursor: pointer; border: none; height: 30px; width: 100%; padding: 0; background: none; }

.file-btn { 
    width: 100%; margin-top: 8px; background-color: #34495e; 
    color: white; border: 1px solid #2c3e50; padding: 6px; cursor: pointer;
}
.file-btn:hover { background-color: #465c71; }
#btnExport { background-color: #2980b9; border-color: #3498db; }

.instructions { font-size: 11px; color: #bdc3c7; margin-top: 15px; line-height: 1.5; }

#selectionBox { position: absolute; display: none; pointer-events: none; z-index: 1000; }

#componentList { padding-left: 0; margin-bottom: 0; }
.component-item { font-size: 12px; padding: 5px; background: #34495e; margin-bottom: 4px; border-radius: 3px; border-left: 3px solid #2980b9; list-style: none;}