.site-shell{
  width:min(1480px, calc(100vw - 32px));
  margin:16px auto;
  padding:18px;
  border:1px solid rgba(186, 169, 140, 0.42);
  border-radius:32px;
  background:rgba(255, 252, 246, 0.76);
  box-shadow:var(--shadow);
  backdrop-filter:blur(18px);
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:12px 14px 24px;
}

.brand-lockup{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}

.brand-copy h1{
  font-size:clamp(1.15rem, 1.6vw, 1.6rem);
}

.topnav{
  display:flex;
  align-items:center;
  gap:8px;
  padding:8px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,0.72);
}

.topbar-actions{
  display:flex;
  align-items:center;
  gap:10px;
}

.workspace-grid{
  display:grid;
  grid-template-columns:280px minmax(0, 1fr) 300px;
  gap:18px;
}

.sidebar,
.main-stage,
.inspector{
  min-width:0;
}

.sidebar,
.inspector{
  display:flex;
  flex-direction:column;
  gap:18px;
}

.main-stage{
  display:flex;
  flex-direction:column;
  gap:18px;
}

.stage-intro{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:20px;
  padding:8px 4px;
}

.stage-intro p{
  max-width:520px;
}

.subgrid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:18px;
}

.palette-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:14px;
}

.output-strip{
  display:grid;
  grid-template-columns:repeat(3, minmax(0, 1fr));
  gap:14px;
}

.site-footer{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:22px 10px 6px;
  color:var(--muted);
  font-size:0.94rem;
}

.reset-shell{
  width:min(920px, calc(100vw - 32px));
}

.reset-layout{
  display:grid;
  grid-template-columns:minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap:18px;
}

@media (max-width:1200px){
  .workspace-grid{
    grid-template-columns:260px minmax(0, 1fr);
  }

  .inspector{
    grid-column:1 / -1;
    display:grid;
    grid-template-columns:repeat(3, minmax(0, 1fr));
  }
}

@media (max-width:940px){
  .site-shell{
    width:min(100vw - 16px, 100%);
    margin:8px auto;
    padding:12px;
    border-radius:24px;
  }

  .topbar,
  .stage-intro,
  .site-footer{
    flex-direction:column;
    align-items:stretch;
  }

  .topbar-actions{
    flex-direction:column;
    align-items:stretch;
  }

  .reset-layout{
    grid-template-columns:1fr;
  }

  .workspace-grid,
  .subgrid,
  .output-strip,
  .palette-grid,
  .inspector{
    grid-template-columns:1fr;
  }

  .topnav{
    overflow:auto hidden;
  }
}