:root {
  --bg: #0f1116;
  --panel: #151826;
  --muted: #97a1c0;
  --text: #e7ecff;
  --accent: #6aa9ff;
  --accent-2: #9bffdc;
  --danger: #ff6b6b;
  --ok: #7dffa1;
  --warn: #ffd166;
  --border: #2a3148;
  --input: #0f1320;
  --badge: #243050;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background: linear-gradient(180deg, #0f1116, #0b0d12);
  color: var(--text);
}
header {
  padding: 20px 16px; border-bottom: 1px solid var(--border);
  background: radial-gradient(1000px 300px at -10% -10%, #13213b 0%, rgba(0,0,0,0) 60%);
}
h1 { margin: 0 0 6px 0; font-size: 20px; font-weight: 650; letter-spacing: 0.2px; }
.sub { color: var(--muted); font-size: 13px; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

/* Tabs */
.tabs { display: flex; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--border); background: rgba(21,24,38,0.6); backdrop-filter: blur(6px); position: sticky; top: 0; z-index: 10; }
.tab {
  appearance: none; border: 1px solid var(--border); background: var(--panel); color: var(--text);
  padding: 8px 12px; border-radius: 8px; font-size: 14px; cursor: pointer;
}
.tab.active { border-color: var(--accent); box-shadow: 0 0 0 1px color-mix(in oklab, var(--accent), transparent 70%); }
section { display: none; padding: 16px; }
section.active { display: block; }

/* Panels + forms */
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); }
.panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px;
}
.panel h3 { margin: 0 0 8px 0; font-size: 16px; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
input[type="text"], input[type="number"], select, textarea {
  width: 100%; background: var(--input); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; font-size: 14px;
}
textarea { min-height: 88px; resize: vertical; }
.row { display: grid; grid-template-columns: repeat(6,1fr); gap: 8px; }
.row-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.btn {
  appearance: none; border: 1px solid var(--border); background: #182036; color: var(--text);
  padding: 8px 12px; border-radius: 8px; font-size: 14px; cursor: pointer;
}
.btn.primary { background: linear-gradient(180deg, #2756a4, #1e3f79); border-color: color-mix(in oklab, var(--accent), black 30%); }
.btn.warn { background: #3a2c11; border-color: #5b4613; color: var(--warn); }
.btn.danger { background: #3a1515; border-color: #5b1f1f; color: var(--danger); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.list { width: 100%; border-collapse: collapse; }
.list th, .list td { border-bottom: 1px solid var(--border); padding: 8px; text-align: left; font-size: 14px; }
.muted { color: var(--muted); }
.badge { display: inline-block; padding: 2px 6px; border-radius: 6px; background: var(--badge); font-size: 12px; color: var(--text); }
.small { font-size: 12px; }
.right { text-align: right; }
.flex { display: flex; gap: 8px; align-items: center; }
.stack { display: grid; gap: 8px; }
.hr { height: 1px; background: var(--border); margin: 8px 0; }
.canvas-wrap { background: #0b0e16; border: 1px solid var(--border); border-radius: 12px; padding: 8px; overflow: hidden; }
.canvas-wrap canvas { width: 100%; height: auto; display: block; touch-action: none; }
#wrap3d { overscroll-behavior: contain; }
#wrap3d canvas { touch-action: none; }

/* Modal */
.modal { position: fixed; inset: 0; z-index: 1000; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.6); }
.modal-dialog { position: relative; display: grid; grid-template-columns: 260px 1fr 260px; gap: 0; width: min(1400px, 96vw); height: 96vh; margin: 2vh auto; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.modal-sidebar { background: #10162a; border-right: 1px solid var(--border); color: var(--text); display: flex; flex-direction: column; min-width: 0; height: 100%; }
.modal-sidebar .sidebar-scroll { flex: 1; overflow-y: auto; overflow-x: hidden; padding-bottom: 16px; min-height: 0; }
.modal-rightbar { background: #10162a; border-left: 1px solid var(--border); color: var(--text); display: flex; flex-direction: column; height: 100%; }
.modal-rightbar .rightbar-scroll { flex: 1; overflow-y: auto; overflow-x: hidden; padding-bottom: 16px; min-height: 0; }

/* Keep the asset and placed lists usable when long */
#meshList { max-height: 40vh; overflow-y: auto; overflow-x: hidden; padding-right: 4px; }
#placedList { max-height: calc(96vh - 160px); overflow-y: auto; overflow-x: hidden; padding-right: 4px; }

/* Avoid scroll chaining out of the modal sidebars */
.modal-sidebar .sidebar-scroll,
.modal-rightbar .rightbar-scroll { overscroll-behavior: contain; }
.modal-header { padding: 10px 12px; border-bottom: 1px solid var(--border); font-weight: 600; }
.modal-content { position: relative; background: #0b0e16; }
.modal-close { position: absolute; top: 10px; right: 10px; background: #1e293b; border: 1px solid var(--border); color: var(--text); border-radius: 8px; font-size: 20px; line-height: 20px; padding: 4px 10px; cursor: pointer; z-index: 10; }
.modal .canvas-wrap { height: 100%; border: none; border-radius: 0; }
.paint-overlay { pointer-events: none; }
.modal-rightbar { background: #10162a; border-left: 1px solid var(--border); color: var(--text); display: flex; flex-direction: column; }

.list-item { display: flex; gap: 6px; align-items: center; justify-content: space-between; padding: 6px 8px; border-bottom: 1px solid var(--border); }
.list-item .name { color: var(--text); font-size: 13px; }
.list-item .actions { display: flex; gap: 6px; }
.list-item.active { background: rgba(106,169,255,0.12); }

/* Sidebar tabs */
.side-tab { display: none; }
.side-tab.active { display: block; }

/* Asset cards with preview */
.asset-card { display: grid; grid-template-columns: 120px 1fr; gap: 8px; padding: 8px; border: 1px solid var(--border); border-radius: 8px; background: #0f1424; }
.asset-card + .asset-card { margin-top: 8px; }
.asset-canvas { width: 120px; height: 90px; background: #0b0e16; border: 1px solid var(--border); border-radius: 6px; display: block; }
.asset-meta .name { font-size: 13px; color: var(--text); margin-bottom: 6px; }
.asset-meta .row { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.paint2d-canvas { width: 100%; height: 320px; display:block; image-rendering: pixelated; }

body.modal-open { overflow: hidden; }