/* Two-column workspace, sticky preview, and the mobile arrangement. */
.workspace {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 20px;
    align-items: start;
}

/* Generate bar stays pinned to the bottom of the viewport while scrolling settings */
.generate-bar {
    position: sticky;
    bottom: 0;
    z-index: 10;
    margin: 20px -24px -24px;
    padding: 14px 24px 18px;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--border);
    border-radius: 0 0 var(--radius) var(--radius);
}
.generate-bar .checkbox-row { margin-top: 10px; }
.generate-bar .error-msg { margin-top: 10px; }

.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: sticky;
    top: 16px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
}
.preview-sticky { display: flex; flex-direction: column; gap: 12px; }

@media (max-width: 860px) {
    .workspace { grid-template-columns: 1fr; }
    .size-row, .color-row, .two-col { grid-template-columns: 1fr; }
    .three-col { grid-template-columns: 1fr 1fr; }
    .color-row-3 { grid-template-columns: 1fr 1fr; }

    /* Preview goes first and stays pinned on top so changes are visible while scrolling.
       display:contents lets the pinned block stick across the whole page, not just its column. */
    .preview-panel { display: contents; }
    .workspace > div:first-child { order: 0; }
    .api-url-box { order: 1; }
    .preview-sticky {
        order: -1;
        position: sticky;
        z-index: 20;
        top: 8px;
        background: color-mix(in srgb, var(--surface) 94%, transparent);
        backdrop-filter: blur(14px);
        border-radius: var(--radius);
        padding: 8px;
    }
    .qr-display { padding: 12px; min-height: 0; }
    .qr-meta { display: none; }
    .scan-hint { padding: 6px 10px; font-size: 0.7rem; }
    .scan-hint.ok { background: var(--success-soft); border: 1px solid var(--success); color: var(--success); }
    .qr-display img { max-height: 24vh; }
    #githubLink { display: none; }
    .generate-bar .checkbox-row label { font-size: 0.75rem; }
    .specs-grid { grid-template-columns: 1fr; }
    .qr-placeholder i { font-size: 2rem; margin-bottom: 6px; }
    .btn-action { min-width: 0; padding: 8px 10px; font-size: 0.8rem; }
    .generate-bar { margin: 20px -16px -16px; padding: 12px 16px 14px; }
    .panel { padding: 16px; }
}

/* Short phones: give the settings more room */
@media (max-width: 860px) and (max-height: 700px) {
    .qr-display img { max-height: 16vh; }
    .qr-display { padding: 8px; }
    .btn-generate { padding: 11px; }
    .generate-bar { padding: 10px 16px 10px; }
    .generate-bar .checkbox-row { margin-top: 6px; }
}