:root{
  --bg:#070809;
  --panel:rgba(255,255,255,.08);
  --panel-strong:rgba(255,255,255,.13);
  --line:rgba(246,241,230,.18);
  --text:#f7f1e7;
  --muted:rgba(247,241,231,.68);
  --gold:#f6d27a;
  --blue:#7dd3fc;
  --shadow:0 30px 90px rgba(0,0,0,.36);
}
*{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 18% 10%,rgba(246,210,122,.18),transparent 28%),
    radial-gradient(circle at 82% 18%,rgba(125,211,252,.14),transparent 30%),
    linear-gradient(135deg,#070809,#101114 46%,#050506);
  overflow-x:hidden;
}
button,input,select{font:inherit}
button{cursor:pointer}
a{color:inherit}
.ar-builder{
  width:min(1480px,100%);
  margin:0 auto;
  padding:26px;
}
.ar-nav{
  position:sticky;
  top:14px;
  z-index:20;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:12px;
  border:1px solid var(--line);
  border-radius:22px;
  background:rgba(5,6,7,.68);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
.brand,.nav-actions,.hero-badges,.export-row,.furniture-tools{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.brand{
  text-decoration:none;
  font-weight:900;
}
.brand span{
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:14px;
  background:#f6f1e6;
  color:#111;
}
.nav-actions a{
  min-height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 16px;
  border-radius:999px;
  text-decoration:none;
  font-size:.86rem;
  font-weight:900;
  color:var(--muted);
}
.nav-actions .nav-primary{
  color:#111;
  background:#f6f1e6;
}
.hero{
  min-height:78vh;
  display:grid;
  grid-template-columns:minmax(0,1.08fr) minmax(360px,.72fr);
  gap:26px;
  align-items:center;
  padding:70px 0 34px;
}
.hero-copy{
  display:grid;
  gap:22px;
}
.eyebrow{
  color:var(--gold);
  font-size:.76rem;
  font-weight:900;
  letter-spacing:.22em;
  text-transform:uppercase;
}
h1,h2,p{margin:0}
h1{
  max-width:920px;
  font-size:clamp(3.4rem,7vw,7.8rem);
  line-height:.86;
  letter-spacing:-.08em;
}
h2{
  font-size:clamp(1.8rem,3.2vw,3.25rem);
  line-height:.96;
  letter-spacing:-.06em;
}
.hero-copy p{
  max-width:720px;
  color:var(--muted);
  font-size:1.08rem;
  font-weight:700;
  line-height:1.7;
}
.hero-badges span,.live-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:0 13px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.07);
  color:rgba(247,241,231,.78);
  font-weight:900;
  font-size:.82rem;
}
.control-card,.preview-panel,.ar-panel,.workflow-strip article{
  border:1px solid var(--line);
  background:linear-gradient(145deg,rgba(255,255,255,.12),rgba(255,255,255,.045));
  backdrop-filter:blur(22px);
  box-shadow:var(--shadow);
}
.control-card{
  display:grid;
  gap:16px;
  padding:18px;
  border-radius:26px;
}
.upload-zone{
  min-height:210px;
  display:grid;
  place-items:center;
  gap:8px;
  text-align:center;
  padding:24px;
  border:1px dashed rgba(246,241,230,.32);
  border-radius:22px;
  background:rgba(0,0,0,.26);
}
.upload-zone input{display:none}
.upload-zone i{
  font-size:2.4rem;
  color:var(--gold);
}
.upload-zone strong{font-size:1.15rem}
.upload-zone span,.status,.helper-note{
  color:var(--muted);
  font-size:.9rem;
  font-weight:800;
  line-height:1.5;
}
.field{
  display:grid;
  gap:8px;
  color:rgba(247,241,231,.76);
  font-weight:900;
  font-size:.84rem;
}
select{
  width:100%;
  min-height:54px;
  border:1px solid var(--line);
  border-radius:16px;
  background:rgba(0,0,0,.42);
  color:var(--text);
  padding:0 14px;
  outline:none;
}
.primary-button,.secondary-button,.ghost-button,.tool{
  min-height:52px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  border:0;
  border-radius:999px;
  padding:0 18px;
  font-weight:900;
  text-decoration:none;
}
.primary-button{
  background:linear-gradient(135deg,#fff8e7,#f6d27a);
  color:#111;
  box-shadow:0 22px 60px rgba(246,210,122,.22);
}
.primary-button[disabled]{opacity:.62;cursor:wait}
.secondary-button,.ghost-button,.tool{
  border:1px solid var(--line);
  background:rgba(255,255,255,.07);
  color:var(--text);
}
.studio-grid{
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(360px,.8fr);
  gap:24px;
  align-items:start;
}
.preview-panel,.ar-panel{
  padding:20px;
  border-radius:28px;
}
.panel-head{
  display:flex;
  justify-content:space-between;
  gap:16px;
  align-items:flex-start;
  margin-bottom:18px;
}
.image-compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
figure{
  position:relative;
  margin:0;
  min-height:430px;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:22px;
  background:rgba(0,0,0,.3);
}
figure span{
  position:absolute;
  z-index:2;
  top:12px;
  left:12px;
  padding:8px 10px;
  border-radius:999px;
  background:rgba(0,0,0,.52);
  color:rgba(247,241,231,.78);
  font-size:.72rem;
  font-weight:900;
  text-transform:uppercase;
  letter-spacing:.12em;
}
figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
#sourcePreview:not([src]),#preview:not([src]){display:none}
.empty-state{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  align-content:center;
  gap:10px;
  padding:28px;
  text-align:center;
  color:var(--muted);
}
.empty-state i{
  color:var(--gold);
  font-size:2rem;
}
.empty-state strong{color:var(--text)}
.export-row{margin-top:16px}
.secondary-button[aria-disabled="true"]{
  pointer-events:none;
  opacity:.45;
}
model-viewer{
  border:1px solid var(--line);
  border-radius:24px;
  background:
    radial-gradient(circle at 50% 18%,rgba(246,210,122,.18),transparent 30%),
    linear-gradient(145deg,rgba(255,255,255,.08),rgba(0,0,0,.28));
}
.furniture-tools{margin:14px 0}
.tool.active{
  background:#f6f1e6;
  color:#111;
}
.workflow-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
  margin:24px 0 20px;
}
.workflow-strip article{
  min-height:112px;
  display:grid;
  align-content:center;
  gap:8px;
  padding:18px;
  border-radius:22px;
}
.workflow-strip strong{
  color:var(--gold);
  font-size:1.7rem;
}
.workflow-strip span{
  color:rgba(247,241,231,.78);
  font-weight:900;
}
@media (max-width:980px){
  .ar-builder{padding:16px}
  .hero,.studio-grid{grid-template-columns:1fr}
  .hero{padding-top:42px}
  .image-compare,.workflow-strip{grid-template-columns:1fr}
  figure{min-height:320px}
}
@media (max-width:560px){
  .ar-nav{position:relative;top:auto}
  .nav-actions{width:100%}
  .nav-actions a{flex:1}
  h1{font-size:3rem}
  .panel-head{display:grid}
}