/* App Layout */
#app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Top Toolbar */
.top-toolbar {
    height: 60px;
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 100;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 30px;
}

.logo-small {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-tabs {
    display: flex;
    gap: 10px;
}

.tab {
    background-color: var(--bg-panel);
    padding: 6px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--text-muted);
    border: 1px solid transparent;
}

.tab.active {
    background-color: var(--bg-darker);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    position: relative;
    top: 1px;
    height: 38px;
}

.tab i { font-size: 0.8rem; cursor: pointer; transition: color 0.2s; }
.tab i:hover { color: var(--danger); }

.toolbar-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.responsive-controls {
    display: flex;
    background: var(--bg-panel);
    border-radius: 8px;
    padding: 4px;
}

.device-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.device-btn:hover { color: var(--text-main); }
.device-btn.active { background: var(--bg-darker); color: var(--primary); box-shadow: 0 2px 5px rgba(0,0,0,0.2); }

.toolbar-right { display: flex; gap: 10px; }

/* Main Workspace */
.main-workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebars */
.sidebar {
    width: 280px;
    background-color: var(--bg-dark);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
}

.sidebar-right { border-right: none; border-left: 1px solid var(--border-color); width: 320px; }

.sidebar-header {
    padding: 15px 20px;
    font-weight: 600;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-dark);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

/* Component Drag Items */
.component-category {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 10px;
    margin-top: 20px;
}
.component-category:first-child { margin-top: 0; }

.component-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.component-item {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: grab;
    transition: var(--transition);
    font-size: 0.85rem;
    text-align: center;
}

.component-item:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
    transform: translateY(-2px);
}

.component-item i { font-size: 1.5rem; color: var(--primary); }

/* Canvas Container */
.editor-canvas-container {
    flex: 1;
    background-color: var(--bg-darker);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    overflow: auto;
    /* subtle pattern */
    background-image: radial-gradient(var(--border-light) 1px, transparent 1px);
    background-size: 20px 20px;
}

.canvas-wrapper {
    background: white;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    border-radius: 8px;
    overflow: hidden;
    transition: width 0.3s ease, height 0.3s ease;
    border: 1px solid var(--border-light);
}

/* Device Previews */
.canvas-wrapper.desktop { width: 100%; height: 100%; max-width: 1400px; }
.canvas-wrapper.tablet { width: 768px; height: 1024px; }
.canvas-wrapper.mobile { width: 375px; height: 812px; }

#editor-canvas {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
}

/* Properties Panel */
.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
}
.empty-state i { font-size: 3rem; margin-bottom: 15px; opacity: 0.5; }

.property-group {
    margin-bottom: 20px;
    background: var(--bg-panel);
    border-radius: 8px;
    overflow: hidden;
}

.property-group-header {
    padding: 12px 15px;
    background: rgba(0,0,0,0.2);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.property-group-content {
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.prop-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.prop-row label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.prop-input {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 10px;
    border-radius: 4px;
    font-size: 0.9rem;
    font-family: var(--font-main);
}
.prop-input:focus {
    outline: none;
    border-color: var(--primary);
}

.prop-row-flex {
    display: flex;
    gap: 10px;
}
.prop-row-flex .prop-input { flex: 1; width: 100%; }

/* Canvas UI Helpers */
.selected-element-tools {
    position: absolute;
    background: var(--primary);
    color: white;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    gap: 5px;
    z-index: 1000;
    pointer-events: auto;
}
.tool-btn {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 3px;
}
.tool-btn:hover { background: rgba(255,255,255,0.2); }