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(max-width:900px){.app-shell{padding:14px}.topbar,.output-header{align-items:flex-start;padding:20px}.topbar-actions{justify-content:flex-end;width:auto;min-width:auto}.gallery{gap:18px;padding:20px}.frame-group{gap:16px;width:fit-content;max-width:100%;padding:16px}.frame-group-grid{justify-content:center;gap:14px;width:fit-content}.export-card{border-radius:16px;flex:none;width:fit-content;padding:12px}.editor{grid-template-columns:1fr;min-height:0}.preview-panel{border-right:0;border-bottom:1px solid var(--line);padding:18px}.controls-panel{max-height:none;padding:18px;overflow-y:visible}.dropzone{min-height:300px;margin:18px}.timeline-row{grid-template-columns:1fr}.timeline-row span{white-space:normal}}@media (max-width:520px){.gallery{justify-items:center;gap:16px;display:grid}.frame-group-header{flex-direction:column;align-items:flex-start}.frame-group-actions{justify-content:space-between;width:100%}.frame-group-grid{grid-template-columns:1fr;width:100%;display:grid}.export-meta{align-items:baseline}.export-card button{margin-left:auto}.output-header{flex-direction:column}.topbar{flex-direction:row;align-items:center;gap:12px}.account-signed-out,.google-button{width:100%}.topbar-actions{flex:none;gap:8px;width:auto;min-width:0}.account-section{width:auto}.account-signed-out{justify-items:stretch}.google-button{justify-content:center}.account-avatar-button{border-radius:14px;width:52px;height:52px}.account-avatar-button img{border-radius:10px;width:40px;height:40px}.account-popover{min-width:min(280px,100vw - 40px)}.topbar-actions>.reset-button{width:auto;min-width:72px;min-height:52px;color:var(--muted);padding:0 12px;font-size:.76rem;font-weight:750}.reset-button{flex-direction:column;gap:2px}.reset-button svg{width:17px;height:17px}.number-row{grid-template-columns:1fr}.ratio-grid{scrollbar-width:none;flex-wrap:nowrap;gap:8px;margin:-4px;padding:4px;scroll-padding-inline:4px;display:flex;overflow-x:auto}.ratio-grid::-webkit-scrollbar{display:none}.ratio-grid label{flex:none;width:fit-content;min-height:42px;padding:0 10px}.ratio-swatch-frame{flex-basis:24px;width:24px;height:24px}.ratio-swatch{width:min(21px, calc(20px * var(--ratio)));max-height:20px}.frame-row{grid-template-columns:minmax(0,.9fr) minmax(0,1fr) minmax(0,.9fr);gap:7px}.frame-row button{min-height:48px;padding:0 8px;font-size:.9rem}video{border-radius:14px;min-height:220px}.workspace,.output-section{border-radius:16px}.topbar{border-radius:16px 16px 0 0}.selected-card{grid-template-columns:58px minmax(0,1fr) auto;gap:9px}.selected-card button{grid-column:auto;min-width:70px;padding:0 10px}}