*{box-sizing:border-box}
body{margin:0;display:flex;min-height:100vh;font-family:system-ui,sans-serif;background:#f4f1ec;color:#222}
aside{width:290px;padding:16px;background:#fff;border-right:1px solid #ddd;overflow:auto}
h1{font-size:20px;margin:0 0 12px}h3{margin:16px 0 6px;font-size:14px}
label{display:block;font-size:12px;color:#555;margin-bottom:8px;flex:1}
input,select{width:100%;padding:6px;border:1px solid #ccc;border-radius:6px;font-size:14px}
.row{display:flex;gap:8px}
button{padding:8px 12px;border:0;border-radius:6px;background:#2f3e4e;color:#fff;cursor:pointer;font-size:13px}
aside button{width:100%;margin-top:6px}
button.alt{background:#2e7d5b}
#warn{color:#b3261e;font-size:12px;min-height:14px}
#saved{list-style:none;padding:0;margin:0;font-size:12px}
#saved li{display:flex;justify-content:space-between;align-items:center;padding:5px 0;border-bottom:1px solid #eee}
#saved button{width:auto;margin:0 0 0 4px;padding:3px 7px;font-size:11px}
main{flex:1;padding:16px;min-width:0}
.tabs{display:flex;gap:8px;align-items:center;margin-bottom:10px}
.tabs button{background:#ccc;color:#222}.tabs button.on{background:#2f3e4e;color:#fff}
#dname{margin-left:auto;font-weight:600}
#c2,#c3{width:100%;max-width:900px;background:#fff;border:1px solid #ddd;border-radius:8px;display:block}
#c3{height:560px;background:#cfe6f7}
#thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
#thumbs div{cursor:pointer;border:2px solid transparent;border-radius:8px;background:#fff;padding:4px;text-align:center;font-size:12px}
#thumbs div.on{border-color:#2f3e4e}
.hint{font-size:12px;color:#777}
@media(max-width:760px){body{flex-direction:column}aside{width:100%}}