:root {
    --bg-color: #121212;
    --sidebar-bg: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: #333333;
    --danger-color: #ef4444;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

#app {
    display: flex;
    height: 100vh;
    width: 100vw;
}

#sidebar {
    width: 320px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
}

#sidebar h2 {
    font-size: 1.25rem;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 10px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: rgba(255, 255, 255, 0.03);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.control-group h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.input-row label {
    font-size: 0.9rem;
}

input[type="number"], input[type="text"], select {
    background: #2a2a2a;
    border: 1px solid #444;
    color: white;
    padding: 6px 10px;
    border-radius: 4px;
    font-family: inherit;
}

input[type="number"], input[type="text"] {
    width: 80px;
}

select {
    width: 150px;
}

input[type="number"]:focus, select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.tool-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.tool-btn {
    background-color: #2a2a2a;
    color: var(--text-primary);
    border: 1px solid #444;
}

.tool-btn:hover {
    background-color: #3a3a3a;
}

.tool-btn.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
    width: 100%;
    padding: 10px;
    margin-top: 5px;
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid #444;
    width: 100%;
    padding: 10px;
}

.btn-secondary:hover {
    background-color: #2a2a2a;
}

.btn-file {
    display: inline-block;
    background-color: #2a2a2a;
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid #444;
    cursor: pointer;
    text-align: center;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}

.btn-file:hover {
    background-color: #3a3a3a;
}

.btn-file input[type="file"] {
    display: none;
}

ul {
    list-style: none;
}

ul li {
    font-size: 0.85rem;
    padding: 8px;
    background: #2a2a2a;
    margin-bottom: 5px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid transparent;
}

ul li.active {
    border-color: var(--accent-color);
    background: rgba(59, 130, 246, 0.1);
}

ul li button.delete-btn {
    background: transparent;
    color: var(--danger-color);
    padding: 2px 6px;
    font-size: 1rem;
}

ul li button.delete-btn:hover {
    background: rgba(239, 68, 68, 0.2);
}

small {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

#workspace {
    flex: 1;
    position: relative;
    overflow: hidden;
    background-color: #000;
    cursor: grab;
}

#workspace:active {
    cursor: grabbing;
}

#canvas-container {
    position: absolute;
    transform-origin: 0 0;
    will-change: transform;
}

canvas {
    display: block;
}