body{color:#000;background:#fff;margin:0;font-family:Arial,sans-serif}#app{max-width:1500px;margin:0 auto;padding:24px}h1{margin:0 0 24px}h2{margin:0 0 14px;font-size:20px}.app-layout{grid-template-columns:390px 250px 1fr;align-items:start;gap:24px;display:grid}.design-controls,.colour-controls,.preview-controls{background:#fafafa;border:1px solid #ddd;border-radius:10px;padding:16px}#design-grid{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.design-option{color:#000;cursor:pointer;background:#fff;border:1px solid #bbb;border-radius:7px;padding:6px}.design-option.selected{box-shadow:0 0 0 2px #fff,0 0 0 4px #000}.design-thumbnail{aspect-ratio:1;display:block;overflow:hidden}.design-thumbnail svg{width:100%;height:100%;display:block}.design-thumbnail #outline{fill:#000}.design-label{text-align:center;margin-top:4px;font-size:11px;font-weight:700;display:block}.colour-tabs{border-bottom:1px solid #ccc;gap:24px;margin-bottom:14px;display:flex}.tab-button{color:#777;cursor:pointer;background:0 0;border:0;padding:0 2px 10px;font-size:20px;font-weight:700;position:relative}.tab-button:after{content:"";background:0 0;border-radius:3px;height:3px;position:absolute;bottom:-1px;left:0;right:0}.tab-button.active{color:#000}.tab-button.active:after{background:#000}#colour-grid{grid-template-columns:1fr 1fr;gap:7px;padding:4px;display:grid}.colour-option{cursor:pointer;text-align:center;border:1px solid #888;border-radius:5px;height:32px;padding:0 6px;font-size:12px;font-weight:600}.colour-option.selected{box-shadow:0 0 0 2px #fff,0 0 0 4px #000}.preview-controls{position:sticky;top:24px}#preview{aspect-ratio:1;width:100%;position:relative;overflow:hidden}#lid-background,#lid-art{position:absolute;inset:0}#lid-background{background:#fff}#lid-art{z-index:1}#lid-art svg{width:100%;height:100%;display:block}@media (width<=1100px){.app-layout{grid-template-columns:390px 250px}.preview-controls{grid-column:1/-1;position:relative}}