:root{
  --bg:#f3efe7;--panel:#fff;--ink:#171819;--muted:#766f66;--gold:#b99548;
  --line:#dfd8cc;--dark:#101214;--soft:#ebe5da;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--ink)}
a{text-decoration:none;color:inherit}
.topbar{height:72px;background:#111315;color:white;display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:50}
.brand{letter-spacing:.17em;color:#d4b266;font-weight:800;font-size:13px}
.toplinks{display:flex;gap:22px;align-items:center;font-size:13px}
.btn{border:0;border-radius:10px;padding:11px 15px;font-weight:800;cursor:pointer}
.btn-gold{background:var(--gold);color:#111}.btn-dark{background:#1a1c1f;color:#fff}.btn-light{background:#eee8dd;color:#25221d}
.hero{padding:26px 28px 10px;display:flex;justify-content:space-between;gap:20px;align-items:flex-end}
.hero h1{font-family:Georgia,serif;font-size:40px;margin:4px 0}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.11em;color:#857a6d}
.hero p{margin:5px 0;color:var(--muted);max-width:780px;line-height:1.5}
.studio{display:grid;grid-template-columns:minmax(380px,470px) 1fr;gap:18px;padding:18px 28px 30px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px}
.controls{max-height:calc(100vh - 130px);overflow:auto;position:sticky;top:90px}
.section{padding:16px 0;border-bottom:1px solid #eee8df}.section:last-child{border:0}
.section h3{font-family:Georgia,serif;margin:0 0 12px;font-size:20px}
.modegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.mode{border:1px solid var(--line);border-radius:12px;padding:11px;text-align:center;background:#fff;cursor:pointer;font-size:12px}.mode.active{background:#181a1c;color:#fff;border-color:#181a1c}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.field label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:#7c7369;margin-bottom:6px}
.input,.select{width:100%;padding:11px 12px;border:1px solid #d7d0c5;border-radius:10px;background:#fff}
.upload{border:1px dashed #bcb3a4;border-radius:14px;padding:15px;background:#faf8f4}.upload input{width:100%}
.swatches{display:flex;gap:8px;flex-wrap:wrap}.swatch{width:34px;height:34px;border-radius:9px;border:2px solid transparent;box-shadow:0 0 0 1px #cfc7bb;cursor:pointer}.swatch.active{border-color:#111;box-shadow:0 0 0 2px #fff,0 0 0 4px #111}
.previewPanel{min-height:720px;display:flex;flex-direction:column}
.previewToolbar{display:flex;gap:8px;justify-content:space-between;align-items:center;margin-bottom:12px;flex-wrap:wrap}
.viewBtns{display:flex;gap:6px}.viewBtns button{border:1px solid var(--line);background:white;border-radius:999px;padding:8px 10px;cursor:pointer}.viewBtns button.active{background:#111;color:#fff}
.stage{flex:1;min-height:560px;border-radius:16px;background:linear-gradient(#e8e4de 70%,#d9d4cc 70%);position:relative;display:grid;place-items:center;overflow:hidden;perspective:1200px}
.wallLine{position:absolute;left:0;right:0;bottom:30%;height:1px;background:rgba(0,0,0,.07)}
.product{position:relative;transition:.25s transform ease;transform-style:preserve-3d}
.product.angle{transform:rotateY(-18deg) rotateX(3deg)}
.outerFrame{position:relative;background:#2c2218;padding:18px;box-shadow:0 22px 45px rgba(0,0,0,.22)}
.frameGap{background:#111;padding:0}
.mount{padding:26px;background:#f6f2e7}
.artwrap{position:relative;background:#c8c8c8;overflow:hidden}
.artwrap img{width:100%;height:100%;display:block}
.fit-contain img{object-fit:contain;background:#ddd}.fit-cover img{object-fit:cover}.fit-original img{object-fit:contain}
.placeholder{position:absolute;inset:0;display:grid;place-items:center;color:#666;font-size:14px;text-align:center;padding:20px}
.sideLabel{position:absolute;right:18px;bottom:18px;background:rgba(17,19,21,.88);color:#fff;padding:8px 10px;border-radius:9px;font-size:11px}
.summary{margin-top:14px;display:grid;grid-template-columns:1fr 330px;gap:14px}
.breakdown{background:#faf8f4;border:1px solid #e4ddd2;border-radius:14px;padding:15px}.breakrow{display:flex;justify-content:space-between;padding:7px 0;font-size:13px}.total{font-size:30px;font-weight:900;margin-top:9px;padding-top:12px;border-top:1px solid #ddd4c7}
.specs{background:#17191b;color:#fff;border-radius:14px;padding:15px}.specs h4{margin:0 0 8px;font-family:Georgia,serif}.specs div{font-size:12px;color:#d2cec7;line-height:1.65}
.savebar{display:flex;gap:8px;margin-top:12px}.savebar .btn{flex:1}
.notice{padding:11px 12px;border-radius:10px;margin-bottom:10px;font-size:13px}.ok{background:#e6f3e8;color:#245833}.err{background:#f7e4e4;color:#792929}
.hidden{display:none!important}
@media(max-width:1050px){.studio{grid-template-columns:1fr}.controls{position:static;max-height:none}.previewPanel{min-height:auto}.summary{grid-template-columns:1fr}}
@media(max-width:650px){.topbar,.hero,.studio{padding-left:14px;padding-right:14px}.hero h1{font-size:32px}.grid2,.grid3,.modegrid{grid-template-columns:1fr}.previewPanel{padding:10px}.stage{min-height:430px}}