:root {
    --bg-main: #1a1a1a;
    --bg-side: #252525;
    --accent: #007acc;
    --accent-hover: #005fa3;
    --text: #e0e0e0;
    --border: #3a3a3a;
    --danger: #d32f2f;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-main);
    color: var(--text);
    overflow: hidden;
}

#editor-container {
    display: flex;
    height: 100vh;
}

#canvas-wrapper {
    flex-grow: 1;
    position: relative;
    background-image: radial-gradient(#333 1px, transparent 1px);
    background-size: 20px 20px;
}

canvas { display: block; }

#view-3d-container {
    position: absolute;
    bottom: 20px;
    right: 20px;
    border: 2px solid var(--border);
    background: #000;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

.view-3d-overlay {
    position: absolute;
    top: 0; left: 0; right: 0;
    padding: 4px 8px;
    background: rgba(0,0,0,0.6);
    font-size: 10px;
    color: #888;
    pointer-events: none;
}

.toolbar {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    gap: 8px;
    background: var(--bg-side);
    padding: 8px;
    border-radius: 4px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.tool-group { display: flex; gap: 4px; align-items: center; }
.divider { width: 1px; background: var(--border); margin: 0 4px; }

button {
    background: #333;
    border: 1px solid #444;
    color: var(--text);
    padding: 6px 12px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.2s;
}

button:hover { background: #444; }
button.active { background: var(--accent); border-color: var(--accent); }
button.primary { background: var(--accent); }
button.primary:hover { background: var(--accent-hover); }
button.danger:hover { background: var(--danger); }
button.success { background: #2e7d32 !important; }

.stats {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(0,0,0,0.7);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    color: #aaa;
}

#side-panel {
    width: 320px;
    background: var(--bg-side);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 12px;
    font-weight: bold;
    color: #888;
}

.tab-btn.active {
    color: var(--text);
    border-bottom: 2px solid var(--accent);
}

.tab-content {
    display: none;
    flex-grow: 1;
    overflow-y: auto;
}

.tab-content.active {
    display: block;
}

.panel-section {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

h3 { margin-top: 0; font-size: 14px; text-transform: uppercase; color: #888; }

.input-group {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-group label { flex: 1; font-size: 13px; }
.input-group input, .input-group select {
    width: 120px;
    background: #1a1a1a;
    border: 1px solid #444;
    color: #fff;
    padding: 4px 8px;
    border-radius: 3px;
    font-size: 13px;
}

input[type="color"] { padding: 0; height: 26px; width: 40px; }

.hint { font-size: 12px; color: #666; font-style: italic; line-height: 1.4; }

.help ul { padding-left: 18px; margin: 10px 0 0 0; }
.help li { font-size: 12px; color: #aaa; margin-bottom: 4px; }

.info { font-size: 11px; color: #555; margin-left: auto; }
.btn-github { color: var(--accent); text-decoration: none; }
.btn-github:hover { text-decoration: underline; }

/* Layer List Styles */
.layer-controls {
    display: flex;
    gap: 4px;
    margin-bottom: 10px;
}

.layer-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.layer-item {
    background: #333;
    padding: 8px 12px;
    border-radius: 3px;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    user-select: none;
}

.layer-item:hover {
    background: #3d3d3d;
}

.layer-item.selected {
    background: var(--accent);
}

.layer-item .color-preview {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

.layer-item .name {
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.layer-item .type {
    font-size: 10px;
    color: #888;
    text-transform: uppercase;
}

.layer-item.selected .type {
    color: #ccc;
}