/* ── Layout ── */
.two-col {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 1.25rem;
    align-items: start;
}

@media (max-width: 860px) {
    .two-col {
        grid-template-columns: 1fr;
    }
}

.preview-card {
    min-width: 0;
    overflow: hidden;
}

/* ── Canvas wrap ── */
.preview-canvas-wrap {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 300px;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

#preview-canvas {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 2px;
}

/* ── Thumbnail strip ── */
.thumb-strip {
    display: flex;
    gap: .4rem;
    overflow-x: auto;
    overflow-y: hidden;
    padding: .5rem 0 .4rem;
    scrollbar-width: thin;
    scrollbar-color: var(--border2) transparent;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

.thumb-strip::-webkit-scrollbar {
    height: 4px;
}

.thumb-strip::-webkit-scrollbar-thumb {
    background: var(--border2);
    border-radius: 2px;
}

.thumb-frame {
    flex-shrink: 0;
    width: 52px;
    height: 68px;
    border: 2px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    transition: border-color var(--transition);
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.thumb-frame:hover {
    border-color: var(--accent2);
}

.thumb-frame.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-bg);
}

.thumb-frame canvas {
    display: block;
    width: 100% !important;
    height: auto !important;
}

/* ── Page nav ── */
.page-nav-row {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.page-nav-btn {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface2);
    color: var(--text2);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.page-nav-btn:hover:not(:disabled) {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.page-nav-btn:disabled {
    opacity: .3;
    cursor: not-allowed;
}

.page-nav-label {
    flex: 1;
    text-align: center;
    font-size: .82rem;
    color: var(--text2);
}

.file-pill {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: .5rem .75rem;
    font-size: .8rem;
    color: var(--text2);
    margin-bottom: 1rem;
    word-break: break-all;
}

.divider {
    height: 1px;
    background: var(--border);
    margin: .9rem 0;
}

.preview-page-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, .55);
    color: #fff;
    font-size: .72rem;
    font-weight: 600;
    padding: .2rem .5rem;
    border-radius: 20px;
    pointer-events: none;
    z-index: 2;
}

/* ── Type tabs ── */
.type-tabs {
    display: flex;
    gap: .5rem;
    margin-bottom: 1rem;
}

.type-tab {
    flex: 1;
    padding: .5rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface2);
    color: var(--text2);
    font-size: .82rem;
    font-weight: 700;
    cursor: pointer;
    text-align: center;
    transition: all var(--transition);
}

.type-tab:hover {
    border-color: var(--accent2);
}

.type-tab.active {
    border-color: var(--accent);
    background: var(--accent-bg);
    color: var(--accent);
}

/* ── Slider rows ── */
.slider-row {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-bottom: .7rem;
}

.slider-row label {
    font-size: .78rem;
    color: var(--text2);
    font-weight: 600;
    min-width: 68px;
}

.slider-row input[type=range] {
    flex: 1;
    accent-color: var(--accent);
}

.slider-val {
    font-size: .78rem;
    font-weight: 700;
    color: var(--accent);
    min-width: 38px;
    text-align: right;
}

/* ── Position grid ── */
.pos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .35rem;
    margin-bottom: .75rem;
}

.pos-btn {
    padding: .45rem .2rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface2);
    color: var(--text3);
    font-size: .72rem;
    cursor: pointer;
    text-align: center;
    transition: all var(--transition);
}

.pos-btn:hover {
    border-color: var(--accent2);
    color: var(--text);
}

.pos-btn.active {
    border-color: var(--accent);
    background: var(--accent-bg);
    color: var(--accent);
    font-weight: 700;
}

.pos-btn.center-btn {
    grid-column: 2;
    grid-row: 2;
}

/* ── Page scope ── */
.scope-row {
    display: flex;
    gap: .4rem;
    flex-wrap: wrap;
}

.scope-btn {
    padding: .35rem .7rem;
    font-size: .75rem;
    font-weight: 600;
    border: 1.5px solid var(--border);
    border-radius: 20px;
    background: var(--surface2);
    color: var(--text2);
    cursor: pointer;
    transition: all var(--transition);
}

.scope-btn:hover {
    border-color: var(--accent2);
}

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

/* ── Image dropzone ── */
.img-drop {
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: .75rem;
    text-align: center;
    cursor: pointer;
    color: var(--text3);
    font-size: .8rem;
    transition: border-color var(--transition);
    background: var(--bg3);
}

.img-drop:hover,
.img-drop.drag-over {
    border-color: var(--accent);
    color: var(--accent);
}

.img-drop.has-image {
    border-style: solid;
    border-color: var(--accent);
}

/* ── Color swatch ── */
.color-row {
    display: flex;
    align-items: center;
    gap: .6rem;
}

.color-swatch {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    overflow: hidden;
    cursor: pointer;
    flex-shrink: 0;
}

.color-swatch input[type=color] {
    width: 120%;
    height: 120%;
    margin: -10%;
    border: none;
    cursor: pointer;
}

.color-hex {
    font-size: .78rem;
    font-family: monospace;
    color: var(--text2);
}

/* ── Placement mode (single/tiled) ── */
.placement-row {
    display: flex;
    gap: .4rem;
    margin-bottom: .75rem;
}

.placement-btn {
    flex: 1;
    padding: .42rem .3rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface2);
    color: var(--text2);
    font-size: .75rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: all var(--transition);
}

.placement-btn:hover {
    border-color: var(--accent2);
}

.placement-btn.active {
    border-color: var(--accent);
    background: var(--accent-bg);
    color: var(--accent);
}