:root {
  --bg: #15171c;
  --bg2: #1c1f26;
  --panel: #22262f;
  --panel2: #2a2f3a;
  --line: #343a47;
  --text: #e6e8ee;
  --muted: #9aa3b5;
  --faint: #6b7385;
  --accent: #7cc552;
  --accent2: #5aa33a;
  --accent-ink: #0f1a09;
  --warn: #e7b84b;
  --danger: #e5604f;
  --info: #5fa8e8;
  --vanilla: #8d97ab;
  --mine: #7cc552;
  --radius: 8px;
  --shadow: 0 6px 24px rgba(0, 0, 0, .35);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f3f4f7; --bg2: #eceef2; --panel: #ffffff; --panel2: #f5f6f9; --line: #dde1e8; --text: #1d2230;
    --muted: #5a6376; --faint: #8b93a5; --accent: #4f9a2c; --accent2: #3f8022; --accent-ink: #ffffff;
    --shadow: 0 6px 24px rgba(20, 30, 50, .12); color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f3f4f7; --bg2: #eceef2; --panel: #ffffff; --panel2: #f5f6f9; --line: #dde1e8; --text: #1d2230;
  --muted: #5a6376; --faint: #8b93a5; --accent: #4f9a2c; --accent2: #3f8022; --accent-ink: #ffffff;
  --shadow: 0 6px 24px rgba(20, 30, 50, .12); color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 14px/1.45 var(--sans); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.2; }
h1 { font-size: 22px; } h2 { font-size: 18px; } h3 { font-size: 15px; } h4 { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
code, pre, .mono { font-family: var(--mono); font-size: 12.5px; }
.pixel { image-rendering: pixelated; }

#app { display: grid; grid-template-columns: 240px 1fr; grid-template-rows: 48px 1fr; height: 100vh; }
#topbar { grid-column: 1 / -1; display: flex; align-items: center; gap: 12px; padding: 0 12px; background: var(--bg2); border-bottom: 1px solid var(--line); min-width: 0; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 700; font-size: 16px; }
.brand:hover { text-decoration: none; }
.spacer { flex: 1; }
#global-search { width: min(360px, 40vw); padding: 6px 10px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); }
#top-actions { display: flex; gap: 8px; }
#sidebar { overflow: auto; background: var(--bg2); border-right: 1px solid var(--line); padding: 8px 6px 40px; }
#main { overflow: auto; min-width: 0; position: relative; }
.boot { padding: 40px; color: var(--muted); }

.nav-group { margin: 10px 0 4px; }
.nav-group > .nav-title { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); padding: 4px 8px; display: flex; align-items: center; cursor: pointer; user-select: none; }
.nav-group > .nav-title::after { content: "▾"; margin-left: auto; }
.nav-group.collapsed > .nav-title::after { content: "▸"; }
.nav-group.collapsed > .nav-items { display: none; }
.nav-item { display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 6px; color: var(--text); cursor: pointer; }
.nav-item:hover { background: var(--panel); text-decoration: none; }
.nav-item.active { background: var(--panel2); box-shadow: inset 3px 0 0 var(--accent); }
.nav-item .count { margin-left: auto; color: var(--faint); font-size: 12px; }
.nav-item img, .icon { width: 18px; height: 18px; image-rendering: pixelated; flex: none; }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); cursor: pointer; white-space: nowrap; }
.btn:hover { background: var(--panel2); }
.btn.primary { background: var(--accent); border-color: var(--accent2); color: var(--accent-ink); font-weight: 600; }
.btn.primary:hover { background: var(--accent2); }
.btn.danger { color: var(--danger); }
.btn.small { padding: 3px 8px; font-size: 12px; }
.btn.ghost { background: transparent; border-color: transparent; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.page { padding: 20px 24px 60px; max-width: 1500px; }
.page-head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.page-head .grow { flex: 1; min-width: 200px; }
.page-head p { margin: 4px 0 0; color: var(--muted); }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.card + .card { margin-top: 12px; }
.grid-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.tile { display: flex; gap: 10px; align-items: center; padding: 12px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer; color: var(--text); }
.tile:hover { border-color: var(--accent); text-decoration: none; }
.tile img { width: 32px; height: 32px; image-rendering: pixelated; }
.tile .t { font-weight: 600; }
.tile .d { color: var(--muted); font-size: 12px; }

.badge { display: inline-block; font-size: 11px; padding: 1px 6px; border-radius: 10px; background: var(--panel2); color: var(--muted); border: 1px solid var(--line); vertical-align: middle; }
.badge.vanilla { color: var(--vanilla); }
.badge.project, .badge.mine { color: var(--mine); border-color: color-mix(in srgb, var(--mine) 40%, var(--line)); }
.badge.override { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--line)); }
.badge.default { color: var(--faint); font-style: italic; }

/* registry list */
.list-toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; }
.list-toolbar input[type=search] { flex: 1; min-width: 200px; padding: 7px 10px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button { border: 0; background: var(--panel); padding: 6px 10px; cursor: pointer; }
.seg button.on { background: var(--accent); color: var(--accent-ink); }
.entries { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 6px; }
.entry { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-radius: 6px; background: var(--panel); border: 1px solid var(--line); cursor: pointer; color: var(--text); min-width: 0; }
.entry:hover { border-color: var(--accent); text-decoration: none; }
.entry .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.entry .ns { color: var(--faint); }

/* editor */
.editor { display: grid; grid-template-columns: minmax(340px, 1fr) minmax(360px, 1.15fr); gap: 0; height: 100%; }
.editor.full { grid-template-columns: 1fr; }
.editor-left { overflow: auto; border-right: 1px solid var(--line); min-width: 0; }
.editor-right { overflow: auto; background: var(--bg2); min-width: 0; display: flex; flex-direction: column; }
.editor-head { position: sticky; top: 0; z-index: 5; background: var(--bg); border-bottom: 1px solid var(--line); padding: 10px 14px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.editor-head .title { font-weight: 700; font-size: 16px; overflow: hidden; text-overflow: ellipsis; }
.editor-head .sub { color: var(--faint); font-family: var(--mono); font-size: 12px; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); padding: 0 10px; background: var(--bg); position: sticky; top: 0; z-index: 4; }
.tabs button { border: 0; background: transparent; padding: 9px 12px; cursor: pointer; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs button.on { color: var(--text); border-bottom-color: var(--accent); }
.form { padding: 12px 14px 80px; }

/* form widgets */
.field { margin: 0 0 10px; }
.field > .label { display: flex; align-items: center; gap: 6px; font-weight: 600; font-size: 13px; margin-bottom: 4px; }
.field > .label .help { color: var(--faint); font-weight: 400; font-size: 12px; }
.field > .label .tip { cursor: help; color: var(--faint); border: 1px solid var(--line); border-radius: 50%; width: 16px; height: 16px; display: inline-grid; place-items: center; font-size: 10px; }
.field .row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.field input[type=text], .field input[type=number], .field select, .field textarea, .inp {
  padding: 6px 8px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); min-width: 0;
}
.field input[type=number] { width: 110px; }
.field input[type=range] { flex: 1; min-width: 120px; accent-color: var(--accent); }
.field textarea { width: 100%; min-height: 120px; font-family: var(--mono); font-size: 12px; }
.field .unset { color: var(--faint); font-style: italic; }
.obj { border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 10px 2px; background: color-mix(in srgb, var(--panel) 70%, transparent); margin-top: 4px; }
.obj .obj { background: var(--panel); }
.obj-head { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.obj-head .type-pick { font-weight: 600; }
.list-item { display: flex; gap: 6px; align-items: flex-start; margin-bottom: 6px; }
.list-item > .body { flex: 1; min-width: 0; }
.list-item > .tools { display: flex; flex-direction: column; gap: 2px; }
.toggle { position: relative; width: 38px; height: 22px; flex: none; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle span { position: absolute; inset: 0; background: var(--panel2); border: 1px solid var(--line); border-radius: 12px; cursor: pointer; transition: .15s; }
.toggle span::before { content: ""; position: absolute; width: 16px; height: 16px; left: 2px; top: 2px; background: var(--muted); border-radius: 50%; transition: .15s; }
.toggle input:checked + span { background: var(--accent); border-color: var(--accent2); }
.toggle input:checked + span::before { transform: translateX(16px); background: #fff; }
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 12px; background: var(--panel2); border: 1px solid var(--line); font-size: 12px; margin: 2px; }
.chip img { width: 16px; height: 16px; image-rendering: pixelated; }
.chip button { border: 0; background: transparent; cursor: pointer; color: var(--faint); padding: 0 0 0 2px; }
.swatch { width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--line); cursor: pointer; padding: 0; }
.block-pick { display: inline-flex; align-items: center; gap: 6px; padding: 3px 8px 3px 4px; border: 1px solid var(--line); background: var(--panel); border-radius: 6px; cursor: pointer; }
.block-pick img, .block-pick canvas { width: 24px; height: 24px; image-rendering: pixelated; }
.props { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.props label { font-size: 12px; color: var(--muted); display: inline-flex; gap: 4px; align-items: center; }

/* visualizer */
.viz { position: relative; flex: 1; min-height: 360px; display: flex; flex-direction: column; }
.viz-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 8px 10px; border-bottom: 1px solid var(--line); background: var(--bg); }
.viz-toolbar label { display: inline-flex; gap: 6px; align-items: center; color: var(--muted); font-size: 12px; }
.viz-body { position: relative; flex: 1; min-height: 320px; }
.viz canvas.gl { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; }
.viz canvas.gl:active { cursor: grabbing; }
.viz .overlay { position: absolute; left: 10px; bottom: 10px; background: color-mix(in srgb, var(--bg) 80%, transparent); padding: 6px 10px; border-radius: 6px; font-size: 12px; color: var(--muted); pointer-events: none; max-width: 70%; }
.viz .hover-info { position: absolute; right: 10px; top: 10px; background: color-mix(in srgb, var(--bg) 85%, transparent); padding: 6px 10px; border-radius: 6px; font-size: 12px; pointer-events: none; }
.viz-2d { image-rendering: pixelated; max-width: 100%; display: block; margin: 0 auto; }
.viz-scroll { padding: 12px; overflow: auto; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 12px; font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: -1px; }
.spinner { width: 28px; height: 28px; border: 3px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.center { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); }

/* modal */
.modal-back { position: fixed; inset: 0; background: rgba(0, 0, 0, .5); display: grid; place-items: center; z-index: 100; padding: 16px; }
.modal { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); width: min(720px, 100%); max-height: 88vh; display: flex; flex-direction: column; }
.modal-head { padding: 12px 16px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 10px; }
.modal-head h2 { margin: 0; flex: 1; }
.modal-body { padding: 14px 16px; overflow: auto; }
.modal-foot { padding: 10px 16px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 8px; }
.picker-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 4px; margin-top: 10px; }
.picker-grid .pi { display: flex; align-items: center; gap: 6px; padding: 5px 6px; border-radius: 6px; cursor: pointer; border: 1px solid transparent; font-size: 12px; overflow: hidden; }
.picker-grid .pi:hover { background: var(--panel2); border-color: var(--line); }
.picker-grid .pi img, .picker-grid .pi canvas { width: 24px; height: 24px; image-rendering: pixelated; flex: none; }
.picker-grid .pi span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* toasts */
#toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 200; }
.toast { background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--accent); padding: 10px 14px; border-radius: 6px; box-shadow: var(--shadow); max-width: 420px; }
.toast.error { border-left-color: var(--danger); }
.toast.warn { border-left-color: var(--warn); }

/* install */
.install { max-width: 760px; margin: 40px auto; padding: 0 16px; }
.install .card { padding: 24px; }
.install .eula { display: flex; gap: 10px; align-items: flex-start; margin: 16px 0; padding: 12px; background: var(--panel2); border-radius: 8px; }
.progress { height: 10px; background: var(--panel2); border-radius: 6px; overflow: hidden; border: 1px solid var(--line); }
.progress > div { height: 100%; background: var(--accent); width: 0; transition: width .2s; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.small { font-size: 12px; }
.err { color: var(--danger); }
table.kv { border-collapse: collapse; width: 100%; font-size: 13px; }
table.kv td, table.kv th { border-bottom: 1px solid var(--line); padding: 5px 6px; text-align: left; vertical-align: top; }
table.kv th { color: var(--muted); font-weight: 600; }
.json-view { white-space: pre; font-family: var(--mono); font-size: 12px; padding: 12px 14px; margin: 0; overflow: auto; }
.code-edit { width: 100%; height: calc(100vh - 170px); min-height: 300px; border: 0; background: var(--bg); padding: 12px 14px; font-family: var(--mono); font-size: 12.5px; resize: none; outline: none; }
.split-h { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.bar { height: 8px; background: var(--accent); border-radius: 4px; }
.stack-row { display: flex; align-items: center; gap: 8px; padding: 4px 0; border-bottom: 1px dashed var(--line); font-size: 13px; }
.step-title { font-weight: 600; margin: 12px 0 4px; display: flex; gap: 8px; align-items: center; }
.hint { background: color-mix(in srgb, var(--info) 12%, var(--panel)); border: 1px solid color-mix(in srgb, var(--info) 35%, var(--line)); padding: 8px 10px; border-radius: 6px; font-size: 13px; }

@media (max-width: 900px) {
  #app { grid-template-columns: 1fr; grid-template-rows: 48px auto 1fr; }
  #sidebar { max-height: 40vh; border-right: 0; border-bottom: 1px solid var(--line); }
  .editor { grid-template-columns: 1fr; height: auto; }
  .editor-left { border-right: 0; }
  .viz { min-height: 420px; }
  #global-search { display: none; }
  .page { padding: 16px; }
}

/* ---- 3D scene ---- */
.scene { display: flex; flex-direction: column; min-height: 0; }
.scene-tools { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; padding: 6px 8px; border-bottom: 1px solid var(--line); background: var(--bg); }
.scene-slice { display: inline-flex; align-items: center; gap: 4px; color: var(--muted); font-size: 12px; }
.scene-slice input { width: 140px; accent-color: var(--accent); }
.scene-wrap { position: relative; flex: 1; min-height: 0; }
.scene-canvas { width: 100%; display: block; cursor: grab; background: linear-gradient(#9cc4ff, #dbe9ff); border-radius: 0 0 var(--radius) var(--radius); }
.scene-canvas:active { cursor: grabbing; }
.scene-info { position: absolute; right: 8px; top: 8px; background: color-mix(in srgb, var(--bg) 85%, transparent); padding: 3px 8px; border-radius: 6px; pointer-events: none; font-family: var(--mono); }
.scene-info:empty, .scene-status:empty { display: none; }
.scene-status { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); background: color-mix(in srgb, var(--bg) 90%, transparent); padding: 8px 14px; border-radius: 8px; pointer-events: none; }

/* ---- world preview page ---- */
.preview { display: grid; grid-template-columns: 300px 1fr; height: 100%; min-height: 0; }
.preview-side { border-right: 1px solid var(--line); overflow: auto; padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.preview-main { display: flex; flex-direction: column; min-width: 0; min-height: 0; overflow: auto; }
.preview-main .scene { flex: 1; }
.preview-main .scene-canvas { height: calc(100vh - 210px) !important; min-height: 360px; }
.ctl { display: flex; flex-direction: column; gap: 4px; }
.ctl > span { font-weight: 600; font-size: 13px; }
.ctl small { color: var(--faint); }
.ctl select, .ctl input[type=text], .ctl input[type=number] { width: 100%; }
.check-row { display: flex; align-items: center; gap: 10px; font-size: 13px; cursor: pointer; padding: 2px 0; }
.pair { display: grid; grid-template-columns: auto 1fr auto 1fr; gap: 6px; align-items: center; }
.seed-row { display: flex; gap: 6px; }
.seed-row input { flex: 1; min-width: 0; }
.progress { height: 6px; background: var(--panel2); border-radius: 4px; overflow: hidden; }
.progress > div { height: 100%; width: 0; background: var(--accent); transition: width .15s; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: 12px; padding: 8px 10px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: -1px; }
.map-canvas { image-rendering: pixelated; width: 100%; max-height: calc(100vh - 230px); object-fit: contain; cursor: crosshair; background: var(--panel2); }
.tabbar { display: flex; gap: 2px; padding: 6px 8px 0; border-bottom: 1px solid var(--line); background: var(--bg); }
.tabbar button { border: 1px solid transparent; border-bottom: 0; background: transparent; padding: 6px 12px; border-radius: 6px 6px 0 0; cursor: pointer; color: var(--muted); }
.tabbar button.on { background: var(--bg2); border-color: var(--line); color: inherit; font-weight: 600; }
.warnbox { background: color-mix(in srgb, var(--warn) 12%, transparent); border: 1px solid color-mix(in srgb, var(--warn) 40%, var(--line)); border-radius: 6px; padding: 6px 8px; font-size: 12px; max-height: 140px; overflow: auto; }

/* ---- visualizer widgets ---- */
.seed-ctl { display: inline-flex; align-items: center; gap: 3px; }
.loot-grid { display: grid; grid-template-columns: repeat(9, 40px); gap: 3px; }
.loot-slot { position: relative; width: 40px; height: 40px; background: #8b8b8b; border: 2px solid; border-color: #373737 #fff #fff #373737; display: flex; align-items: center; justify-content: center; box-sizing: border-box; }
.loot-slot img { width: 32px; height: 32px; image-rendering: pixelated; }
.loot-slot.empty { opacity: .55; }
.loot-slot.big { width: 52px; height: 52px; }
.loot-slot.big img { width: 40px; height: 40px; }
.loot-slot .cnt { position: absolute; right: 2px; bottom: 0; color: #fff; font: bold 13px monospace; text-shadow: 1px 1px 0 #3f3f3f; }
.loot-slot .tagmark { position: absolute; left: 2px; top: 0; color: #ffe066; font: bold 11px monospace; text-shadow: 1px 1px 0 #3f3f3f; }
.loot-slot .ench { position: absolute; inset: 0; background: linear-gradient(135deg, transparent 30%, rgba(180, 100, 255, .35) 50%, transparent 70%); pointer-events: none; }
.craft-grid { display: grid; grid-template-columns: repeat(3, 40px); gap: 2px; }
.recipe { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding: 12px; background: #c6c6c6; border-radius: 6px; width: fit-content; margin-bottom: 12px; }
.recipe-arrow { font-size: 28px; color: #555; text-align: center; }
.jv-str { color: var(--accent); }
.jv-num { color: #c78b2e; }
.viz-scroll .card h4 { font-size: 13px; }
.viz > .scene { flex: none; }