:root {
    --bg-color: #1e1e1e;
    --panel-bg: #252526;
    --border-color: #3e3e42;
    --text-color: #cccccc;
    --accent-color: #007acc;
    --accent-hover: #0062a3;
    --danger-color: #f44336;
    --header-height: 50px;
    --toolbar-width: 60px;
    --props-width: 250px;
}

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

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

.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Header */
.app-header {
    height: var(--header-height);
    background-color: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.logo {
    font-weight: 600;
    font-size: 1.2rem;
    color: #fff;
}

.file-controls {
    display: flex;
    gap: 10px;
}

/* Buttons */
.btn {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}

.btn.secondary {
    background-color: #3e3e42;
    color: #fff;
}

.btn.secondary:hover {
    background-color: #4e4e52;
}

.btn.danger {
    background-color: var(--danger-color);
    color: #fff;
    width: 100%;
    margin-top: 10px;
}

.btn.danger:hover {
    background-color: #d32f2f;
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Toolbar */
.toolbar {
    width: var(--toolbar-width);
    background-color: var(--panel-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 0;
    gap: 10px;
}

.tool-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 100%;
    align-items: center;
}

.tool-divider {
    width: 80%;
    height: 1px;
    background-color: var(--border-color);
    margin: 5px 0;
}

.tool-btn {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    border: none;
    background: transparent;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.tool-btn:hover {
    background-color: #3e3e42;
}

.tool-btn.active {
    background-color: var(--accent-color);
    color: #fff;
}

/* Canvas Area */
.canvas-area {
    flex: 1;
    background-color: #121212;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

#mainCanvas {
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

.zoom-controls {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background-color: var(--panel-bg);
    padding: 5px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.zoom-controls button {
    background: #3e3e42;
    border: none;
    color: #fff;
    width: 24px;
    height: 24px;
    border-radius: 2px;
    cursor: pointer;
}

.zoom-controls button:hover {
    background: #4e4e52;
}

.zoom-controls #resetZoomBtn {
    width: auto;
    padding: 0 5px;
}

.zoom-controls span {
    font-size: 0.8rem;
    min-width: 40px;
    text-align: center;
}

/* Properties Panel */
.properties-panel {
    width: var(--props-width);
    background-color: var(--panel-bg);
    border-left: 1px solid var(--border-color);
    padding: 15px;
    overflow-y: auto;
}

.properties-panel h3 {
    margin-bottom: 15px;
    font-size: 1rem;
    color: #fff;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.hidden {
    display: none;
}

.prop-group {
    margin-bottom: 15px;
}

.prop-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.85rem;
}

.prop-group input[type="text"],
.prop-group input[type="number"],
.prop-group select {
    width: 100%;
    padding: 6px;
    background-color: #1e1e1e;
    border: 1px solid var(--border-color);
    color: #fff;
    border-radius: 4px;
}

.prop-group input[type="color"] {
    width: 100%;
    height: 30px;
    border: none;
    padding: 0;
    background: none;
}

.prop-group input[type="range"] {
    width: 100%;
}