/* ============================================================
   机械翼 · 白模复刻 —— 界面样式
   与设计蓝图同一套视觉语言：暖白底、细线、小字距大写标签、等宽数字
   ============================================================ */

:root{
  --bg:        #f6f6f4;
  --panel:     rgba(255,255,255,.82);
  --line:      #d8d8d3;
  --line-soft: #e7e7e2;
  --ink:       #26282a;
  --ink-2:     #5f6468;
  --ink-3:     #95999c;
  --accent:    #b87333;     /* 图纸上的橙铜色 */
  --radius:    4px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, "PingFang SC", "Helvetica Neue", "Noto Sans SC", sans-serif;
}

*{ box-sizing:border-box; }

html,body{ height:100%; margin:0; }

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:13px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow:hidden;
}

#app{ position:fixed; inset:0; }

#gl{ position:absolute; inset:0; display:block; width:100%; height:100%; touch-action:none; cursor:grab; }
#gl:active{ cursor:grabbing; }

/* ---------- 面板 ---------- */
.panel{
  position:absolute;
  background:var(--panel);
  backdrop-filter:blur(10px) saturate(1.1);
  -webkit-backdrop-filter:blur(10px) saturate(1.1);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:16px 18px;
  max-width:250px;
  z-index:5;
}
.panel--tl{ top:18px; left:18px; }
.panel--tr{ top:18px; right:18px; width:210px; }

.eyebrow{
  font-size:9.5px; letter-spacing:.22em; text-transform:uppercase;
  color:var(--ink-3); font-weight:600;
}
.eyebrow--mt{ margin-top:14px; padding-top:12px; border-top:1px solid var(--line-soft); }

h1{
  font-size:15px; font-weight:600; letter-spacing:.02em;
  margin:6px 0 2px; color:var(--ink);
}
.sub{ margin:0 0 12px; font-size:11px; color:var(--ink-3); letter-spacing:.03em; }

/* ---------- 规格表 ---------- */
.spec{ margin:0; display:grid; grid-template-columns:auto 1fr; gap:4px 10px; }
.spec dt{ font-size:11px; color:var(--ink-3); white-space:nowrap; }
.spec dd{
  margin:0; text-align:right; font-family:var(--mono); font-size:11.5px;
  color:var(--ink); font-variant-numeric:tabular-nums;
}
.spec dd em{ font-style:normal; color:var(--ink-3); font-size:10.5px; }
.note{ margin:10px 0 0; font-size:10px; line-height:1.5; color:var(--ink-3); }

.doclink{ margin:9px 0 0; font-size:11px; }
.doclink a{
  color:var(--accent); text-decoration:none;
  border-bottom:1px solid rgba(184,115,51,.35); padding-bottom:1px;
}
.doclink a:hover{ border-color:var(--accent); }

/* ---------- 画面色调 ---------- */
.tone{ display:grid; gap:7px; margin-top:9px; }
.tone__row{
  display:grid; grid-template-columns:44px 1fr 38px; align-items:center; gap:7px;
  font-size:10px; color:var(--ink-3); letter-spacing:.04em;
}
.tone__row input{ min-width:0; }
.tone__row b{
  font-family:var(--mono); font-size:10px; font-weight:500; color:var(--ink-2);
  text-align:right; font-variant-numeric:tabular-nums;
}

.chips{ display:flex; flex-wrap:wrap; gap:4px; margin-top:8px; }
.chips span{
  font-size:10px; color:var(--ink-2); border:1px solid var(--line);
  border-radius:2px; padding:1px 6px; background:rgba(255,255,255,.6);
}

/* ---------- 底部操作台 ---------- */
.dock{
  position:absolute; left:50%; bottom:34px; transform:translateX(-50%);
  display:grid; gap:8px; justify-items:center;
  padding:10px 12px;
  background:var(--panel);
  backdrop-filter:blur(10px) saturate(1.1);
  -webkit-backdrop-filter:blur(10px) saturate(1.1);
  border:1px solid var(--line); border-radius:var(--radius);
}
.dock__row{ display:flex; align-items:center; gap:6px; flex-wrap:wrap; justify-content:center; }
.dock__row--sub{ padding-top:8px; border-top:1px solid var(--line-soft); width:100%; }

.btn{
  font-family:var(--sans); font-size:11.5px; letter-spacing:.04em;
  color:var(--ink-2); background:#fff;
  border:1px solid var(--line); border-radius:3px;
  padding:5px 11px; cursor:pointer;
  transition:color .15s, border-color .15s, background .15s;
  -webkit-appearance:none; appearance:none;
}
.btn:hover{ color:var(--ink); border-color:#bdbdb7; }
.btn.is-on{ color:#fff; background:var(--ink); border-color:var(--ink); }
.btn--ghost{
  background:transparent; padding:5px 9px; font-size:11px; color:var(--ink-3);
  display:inline-flex; align-items:center; gap:5px;
}
.btn--ghost::before{
  content:""; width:6px; height:6px; border:1px solid currentColor; border-radius:1px;
  background:transparent; transition:background .15s;
}
.btn--ghost.is-on{ background:transparent; border-color:var(--line); color:var(--ink); }
.btn--ghost.is-on::before{ background:var(--accent); border-color:var(--accent); }
.btn--accent{ border-color:#d9c3a6; color:#8a5a24; background:#fdf8f2; font-weight:600; }
.btn--accent:hover{ border-color:var(--accent); color:#6f4718; }

.grp{ display:flex; align-items:center; gap:8px; }
.poses{ display:flex; align-items:center; gap:4px; }
.sep{ width:1px; height:20px; background:var(--line-soft); }
#asmRange, #foldRange, #texRepeat,
#toneHue, #toneSat, #toneLit, #toneExp{
  -webkit-appearance:none; appearance:none; width:112px; height:18px; background:transparent; cursor:pointer;
}
#asmRange::-webkit-slider-runnable-track, #foldRange::-webkit-slider-runnable-track,
#texRepeat::-webkit-slider-runnable-track,
#toneHue::-webkit-slider-runnable-track, #toneSat::-webkit-slider-runnable-track,
#toneLit::-webkit-slider-runnable-track, #toneExp::-webkit-slider-runnable-track{ height:1px; background:var(--line); }
#asmRange::-webkit-slider-thumb, #foldRange::-webkit-slider-thumb,
#texRepeat::-webkit-slider-thumb,
#toneHue::-webkit-slider-thumb, #toneSat::-webkit-slider-thumb,
#toneLit::-webkit-slider-thumb, #toneExp::-webkit-slider-thumb{
  -webkit-appearance:none; width:11px; height:11px; margin-top:-5px; border-radius:50%;
  background:#fff; border:1px solid var(--accent); box-shadow:0 1px 2px rgba(0,0,0,.12);
}
#asmRange::-moz-range-track, #foldRange::-moz-range-track,
#texRepeat::-moz-range-track,
#toneHue::-moz-range-track, #toneSat::-moz-range-track,
#toneLit::-moz-range-track, #toneExp::-moz-range-track{ height:1px; background:var(--line); }
#asmRange::-moz-range-thumb, #foldRange::-moz-range-thumb,
#texRepeat::-moz-range-thumb,
#toneHue::-moz-range-thumb, #toneSat::-moz-range-thumb,
#toneLit::-moz-range-thumb, #toneExp::-moz-range-thumb{
  width:11px; height:11px; border-radius:50%; background:#fff; border:1px solid var(--accent);
}
#toneHue, #toneSat, #toneLit, #toneExp{ width:100%; }   /* 面板内自适应列宽 */
.grp__val{
  font-family:var(--mono); font-size:10.5px; color:var(--ink-3);
  width:70px; font-variant-numeric:tabular-nums;
}

/* ---------- 表面贴图 ---------- */
.tex{ display:grid; grid-template-columns:repeat(3,1fr); gap:4px; margin-top:8px; }
.tex__item{
  display:grid; gap:3px; padding:3px 3px 2px; cursor:pointer;
  background:rgba(255,255,255,.6); border:1px solid var(--line); border-radius:2px;
  font-family:var(--sans); font-size:9.5px; letter-spacing:.02em; color:var(--ink-2);
  -webkit-appearance:none; appearance:none; text-align:center; overflow:hidden;
}
.tex__item i{
  display:block; height:26px; border-radius:1px; background-size:cover;
  background-position:center; border:1px solid rgba(0,0,0,.10);
}
.tex__item span{ white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.tex__item:hover{ border-color:#bdbdb7; color:var(--ink); }
.tex__item.is-on{ border-color:var(--accent); color:var(--ink); box-shadow:inset 0 0 0 1px rgba(184,115,51,.3); }

.tex-bar{ display:flex; align-items:center; gap:6px; margin-top:7px; }
.tex-up{
  position:relative; overflow:hidden; display:inline-block; cursor:pointer;
  font-family:var(--sans); font-size:10px; color:var(--ink-2);
  border:1px solid var(--line); border-radius:2px;
  padding:2px 7px; background:rgba(255,255,255,.6); white-space:nowrap;
  -webkit-appearance:none; appearance:none;
}
.tex-up input{ position:absolute; inset:0; opacity:0; cursor:pointer; }
.tex-up--hint{ color:var(--ink-3); cursor:default; overflow:hidden; text-overflow:ellipsis; flex:1; min-width:0; }
.grp--tight{ margin-top:7px; gap:6px; }
.grp__lab{ font-size:10px; color:var(--ink-3); letter-spacing:.04em; }
#texRepeat{ width:86px; }
#texRepeatVal{ width:44px; }

.hint{
  position:absolute; left:50%; bottom:9px; transform:translate(-50%,0);
  font-size:10px; color:#a8aba9; letter-spacing:.06em;
  pointer-events:none; white-space:nowrap;
}

/* ---------- 启动遮罩 ---------- */
.boot{
  position:absolute; inset:0; display:grid; place-items:center;
  background:var(--bg); transition:opacity .5s ease; z-index:9;
}
.boot.is-done{ opacity:0; pointer-events:none; }
.boot__box{ display:grid; justify-items:center; gap:12px; }
.boot__spin{
  width:22px; height:22px; border:1px solid var(--line);
  border-top-color:var(--accent); border-radius:50%;
  animation:spin .9s linear infinite;
}
@keyframes spin{ to{ transform:rotate(360deg); } }
.boot__txt{ font-size:11px; color:var(--ink-3); letter-spacing:.12em; }
.boot-err{ font-size:12px; color:#a4453a; max-width:320px; text-align:center; line-height:1.7; }

/* ---------- 窄屏 ---------- */
@media (max-width: 900px){
  .panel{ max-width:none; }
  .panel--tl{ top:10px; left:10px; right:10px; padding:12px 14px; }
  .panel--tr{ display:none; }
  .dock{ bottom:10px; left:10px; right:10px; transform:none; }
  .hint{ display:none; }
}