/* Basis css style & layout vom canvas */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: sans-serif;
    background-color: var(--bg);
    color: var(--text);
    height: 100vh;
    overflow: hidden; /* Damit nicht die ganze Seite scrolled */
}

/* Main layout */
.builder-app {
    display: grid;
    grid-template-columns: 250px 1fr 280px; /* Left | Center Canvas | Right */
    height: 100vh;
}

/* base .sidebar styles */
.sidebar {
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto; /* Scrollable if options grow long */
}

.sidebar-left {
    border-right: 1px solid var(--line);
}

.sidebar-right {
    border-left: 1px solid var(--line);
}

.sidebar h2 {
    font-size: 1em;
    margin-bottom: 4px;
}

/* buttons & inputs */
.btn-add {
    font: inherit;
    padding: 4px 8px;
    cursor: pointer;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-group label {
    font-size: 0.9em;
}

.form-control {
    font: inherit;
    padding: 4px;
}

/* Scrallable canvas Blatt*/
.canvas-viewport {
    padding: 20px;
    overflow-y: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* Skalierung und normal größe vom canvash(800px x 1130px ratio) */
.canvas-page {
    width: 100%;
    max-width: 800px;
    min-height: 1130px; /* ~A4 */
    background-color: var(--page);
    color: var(--page-text);
    border: 1px solid var(--line);
    padding: 60px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Blöcke zum ändern*/
.canvas-block {
    padding: 8px;
    border: 1px dashed transparent;
    cursor: pointer;
    user-select: none; /* Prevents text selection while clicking to select element */
}

.canvas-block:hover {
    border-color: var(--line);
}

/* active Elemente*/
.canvas-block.selected {
    border: 1px solid var(--select);
}