.stv-min{display:grid;grid-template-columns:2fr 1fr;gap:20px}
.stv-min-right{background:#f7f7f7;padding:16px;border-radius:8px}
.stv-file-label{display:inline-block;margin-bottom:10px}
.stv-file-label input{display:none}
.stv-file-label span{display:inline-block;padding:10px 14px;border:1px solid #ccc;border-radius:6px;cursor:pointer;background:#fff}
.stv-canvas-wrap{position:relative;width:100%;overflow:hidden;background:#eaeaea;border-radius:8px}
#stv-canvas{width:100%;height:auto;display:block;background:#fff}
.stv-help{position:absolute;bottom:8px;left:8px;background:rgba(0,0,0,.7);color:#fff;padding:6px 10px;border-radius:4px;font-size:12px}
.stv-textures{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.stv-tex{border:1px solid #ddd;padding:8px;background:#fff;border-radius:8px;cursor:pointer;display:grid;gap:6px;text-align:center}
.stv-tex img{width:100%;height:80px;object-fit:cover;border-radius:6px}
.stv-note{font-size:12px;color:#555}
.stv-overlay{position:absolute;inset:0;background:rgba(0,0,0,.35);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px}
.stv-spinner{width:40px;height:40px;border:4px solid #fff;border-top-color:transparent;border-radius:50%;animation:spin 1s linear infinite}
.stv-msg{color:#fff;font-size:14px;text-align:center}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:900px){.stv-min{grid-template-columns:1fr}}