/* แล็บควอนตัม — ธีมมืดแบบห้องทดลองฟิสิกส์ เวทีซ้าย แผงควบคุมขวา */
:root{
  --sans:'IBM Plex Sans Thai','Noto Sans Thai',system-ui,-apple-system,'Segoe UI',sans-serif;
  --bg:#0d0f17; --surface:#141826; --surface2:#1b2032; --line:#28304a;
  --ink:#e7eaf6; --muted:#98a0bd; --dim:#6b7290;
  --cyan:#35d3e8; --violet:#9b6bff; --amber:#ffb648; --rose:#ff5f8f; --green:#35d17a;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);display:flex;flex-direction:column;
  -webkit-font-smoothing:antialiased;user-select:none;-webkit-user-select:none}
input,textarea,select{-webkit-user-select:text;user-select:text}

#stage{position:relative;flex:1;min-height:0;background:radial-gradient(circle at 50% 35%,#182036 0%,#0a0c14 70%)}
#webgl-canvas{width:100%;height:100%;display:block;touch-action:none}

.bar{position:absolute;z-index:6;display:flex;gap:5px;align-items:center;flex-wrap:wrap;
  background:rgba(20,24,38,.9);border:1px solid var(--line);border-radius:999px;padding:5px;
  box-shadow:0 6px 20px rgba(0,0,0,.4);backdrop-filter:blur(6px)}
.station-bar{left:12px;top:12px;max-width:calc(100% - 24px)}
.tab{font-family:inherit;font-size:.78rem;font-weight:600;color:var(--muted);cursor:pointer;border:none;
  background:none;padding:7px 13px;border-radius:999px;min-height:34px;display:flex;align-items:center;gap:6px}
.tab.is-active{background:linear-gradient(135deg,var(--violet),var(--cyan));color:#0b0e16}
.tab i{font-size:.9rem;line-height:1}

.readout{position:absolute;right:12px;bottom:66px;z-index:6;display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;
  max-width:min(460px,calc(100% - 24px))}
.ro{background:rgba(20,24,38,.9);border:1px solid var(--line);border-radius:12px;padding:7px 13px;
  display:flex;flex-direction:column;align-items:center;min-width:64px;box-shadow:0 6px 20px rgba(0,0,0,.35)}
.ro b{font-size:1rem;font-variant-numeric:tabular-nums;line-height:1.2}
.ro span{font-size:.63rem;color:var(--muted);white-space:nowrap}
.ro.hot b{color:var(--amber)}
.ro.good b{color:var(--green)}

.status{position:absolute;left:12px;top:64px;right:12px;background:rgba(20,24,38,.92);border:1px solid var(--line);
  border-radius:12px;padding:8px 13px;font-size:.82rem;line-height:1.5;pointer-events:none;
  max-width:min(560px,calc(100% - 24px));box-shadow:0 6px 20px rgba(0,0,0,.35)}
.status.ok{border-color:#1f6b52;color:#7ff0c0;background:rgba(16,45,36,.92)}
.status.bad{border-color:#7a2740;color:#ffa9c0;background:rgba(56,18,30,.92)}
.status.warn{border-color:#7a5b1f;color:#ffd79a;background:rgba(54,42,16,.92)}

.stage-foot{position:absolute;left:12px;right:12px;bottom:12px;display:flex;gap:8px;flex-wrap:wrap;z-index:6}
.btn{padding:10px 16px;border-radius:999px;border:1px solid transparent;font-family:inherit;font-size:.85rem;
  font-weight:600;cursor:pointer}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.4;pointer-events:none}
.btn-ghost{background:var(--surface2);border-color:var(--line);color:var(--ink)}
.btn-submit{background:var(--green);color:#04180f;margin-left:auto}
.btn-go{background:linear-gradient(135deg,var(--violet),var(--cyan));color:#0b0e16;padding:8px 15px;font-size:.8rem}

/* ---------- แผงข้าง ---------- */
#panel{flex:none;background:var(--surface);border-top:1px solid var(--line);padding:12px 14px 14px;
  display:flex;flex-direction:column;gap:9px;max-height:48vh;overflow-y:auto}
.panel-head{display:flex;align-items:baseline;gap:10px}
.panel-title{font-weight:700;font-size:.95rem}
.goal{font-size:.78rem;color:var(--muted);margin-left:auto;text-align:right}
.hint{margin:0;font-size:.75rem;color:var(--muted);line-height:1.55}
.tiny{margin:0;font-size:.7rem;color:var(--muted);line-height:1.5}
.sec-head{font-size:.76rem;font-weight:600;color:var(--muted);display:flex;align-items:center;gap:7px;margin-top:2px}
.pill{background:rgba(155,107,255,.18);color:#cbb4ff;padding:1px 8px;border-radius:999px;font-size:.72rem}
.row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.lbl{font-size:.75rem;color:var(--muted);white-space:nowrap}
.q-select{font-family:inherit;font-size:.78rem;font-weight:600;color:var(--ink);border:1px solid var(--line);
  border-radius:9px;padding:6px 9px;background:var(--surface2);flex:1;min-width:90px}
.seg{display:flex;gap:3px;background:var(--surface2);border:1px solid var(--line);border-radius:999px;padding:3px}
.seg button{font-family:inherit;font-size:.74rem;font-weight:600;color:var(--muted);border:none;background:none;
  padding:5px 11px;border-radius:999px;cursor:pointer;min-height:28px}
.seg button.is-on{background:var(--violet);color:#0b0e16}

/* ---------- วงจรควอนตัม ---------- */
.gate-bin{display:grid;grid-template-columns:repeat(auto-fill,minmax(52px,1fr));gap:5px}
.gate-btn{font-family:inherit;font-size:.82rem;font-weight:700;color:var(--ink);background:var(--surface2);
  border:1px solid var(--line);border-radius:9px;padding:8px 4px;cursor:pointer;min-height:38px}
.gate-btn:hover{border-color:var(--cyan)}
.gate-btn.is-on{background:linear-gradient(135deg,var(--violet),var(--cyan));color:#0b0e16;border-color:transparent}
.gate-btn.wide{grid-column:span 2}
.circuit-grid{display:flex;flex-direction:column;gap:4px;background:var(--surface2);border:1px solid var(--line);
  border-radius:11px;padding:8px;overflow-x:auto}
.cq-row{display:flex;align-items:center;gap:3px}
.cq-name{font-size:.7rem;color:var(--muted);width:26px;flex:none}
.cq-cell{width:30px;height:30px;flex:none;border-radius:7px;border:1px dashed rgba(120,130,170,.28);
  background:rgba(255,255,255,.02);cursor:pointer;display:flex;align-items:center;justify-content:center;
  font-size:.72rem;font-weight:700;color:var(--ink);position:relative}
.cq-cell:hover{border-color:var(--cyan)}
.cq-cell.has{background:linear-gradient(135deg,rgba(155,107,255,.85),rgba(53,211,232,.85));color:#0b0e16;border-style:solid;border-color:transparent}
.cq-cell.ctrl{background:rgba(53,211,232,.18);border-style:solid;border-color:var(--cyan);color:var(--cyan)}
.cq-cell.pending{outline:2px solid var(--amber)}
.cq-wire{position:absolute;left:50%;top:-4px;bottom:-4px;width:2px;background:var(--cyan);transform:translateX(-50%);opacity:.55}

.histogram{display:flex;flex-direction:column;gap:3px;max-height:160px;overflow-y:auto}
.hist-row{display:flex;align-items:center;gap:7px;font-size:.72rem}
.hist-key{font-family:ui-monospace,Menlo,monospace;color:var(--muted);width:44px;flex:none}
.hist-bar{flex:1;height:13px;background:rgba(255,255,255,.05);border-radius:4px;overflow:hidden}
.hist-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--violet),var(--cyan));border-radius:4px}
.hist-val{width:52px;text-align:right;color:var(--muted);font-variant-numeric:tabular-nums;flex:none}

/* ---------- เบลล์ ---------- */
.angle-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.ang{display:flex;flex-direction:column;gap:3px;background:var(--surface2);border:1px solid var(--line);
  border-radius:10px;padding:7px 9px}
.ang label{font-size:.7rem;color:var(--muted)}
.ang input{width:100%;accent-color:var(--violet)}
.ang b{font-size:.82rem;font-variant-numeric:tabular-nums}
.s-meter{display:flex;flex-direction:column;gap:5px}
.s-bar{position:relative;height:22px;background:var(--surface2);border:1px solid var(--line);border-radius:999px;overflow:hidden}
.s-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--violet));width:0}
.s-bar b{position:absolute;top:0;bottom:0;width:2px;font-size:0}
#s-classic{background:var(--amber)}
#s-quantum{background:var(--green)}
.s-val{display:flex;justify-content:space-between;font-size:.78rem;color:var(--muted)}
.s-val b{color:var(--ink);font-variant-numeric:tabular-nums}
.corr-table{display:grid;grid-template-columns:repeat(2,1fr);gap:5px}
.corr{background:var(--surface2);border:1px solid var(--line);border-radius:9px;padding:6px 8px;font-size:.72rem}
.corr b{display:block;font-size:.86rem;font-variant-numeric:tabular-nums;color:var(--cyan)}
.corr span{color:var(--muted)}

/* ---------- ตัวปรับค่าแบบแถบเลื่อน ---------- */
.knob{display:flex;flex-direction:column;gap:2px;margin:4px 0}
.knob-head{display:flex;justify-content:space-between;font-size:.73rem;color:var(--muted)}
.knob-head b{color:var(--ink);font-variant-numeric:tabular-nums}
.knob input{width:100%;accent-color:var(--cyan)}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:5px}
.stat{background:var(--surface2);border:1px solid var(--line);border-radius:9px;padding:6px 9px}
.stat b{display:block;font-size:.86rem;font-variant-numeric:tabular-nums}
.stat span{font-size:.66rem;color:var(--muted)}

/* ---------- ออร์บิทัล ---------- */
.orb-chips{display:flex;flex-wrap:wrap;gap:4px}
.orb-chip{font-family:inherit;font-size:.72rem;font-weight:600;padding:5px 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface2);color:var(--muted);cursor:pointer}
.orb-chip.is-on{background:linear-gradient(135deg,var(--violet),var(--cyan));color:#0b0e16;border-color:transparent}
.orb-chip.seen{border-color:var(--green);color:#9be6bf}
.spectrum{height:46px;border-radius:10px;border:1px solid var(--line);background:#05070c;position:relative;overflow:hidden}
.spectrum i{position:absolute;top:0;bottom:0;width:3px;border-radius:2px}
.spectrum span{position:absolute;bottom:3px;font-size:.62rem;color:var(--muted);transform:translateX(-50%)}

/* ---------- สปิน ---------- */
.sg-stage{display:flex;align-items:center;gap:7px;background:var(--surface2);border:1px solid var(--line);
  border-radius:10px;padding:7px 9px;margin-bottom:5px}
.sg-stage .n{font-size:.72rem;color:var(--muted);width:16px}
.sg-stage input[type=range]{flex:1;accent-color:var(--violet)}
.sg-stage b{font-size:.78rem;width:44px;text-align:right;font-variant-numeric:tabular-nums}
.sg-take{display:flex;gap:2px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:2px}
.sg-take button{font-family:inherit;font-size:.7rem;font-weight:700;border:none;background:none;color:var(--muted);
  padding:3px 8px;border-radius:999px;cursor:pointer}
.sg-take button.is-on{background:var(--green);color:#04180f}

/* ---------- โจทย์ ---------- */
.task-list{display:flex;flex-direction:column;gap:4px}
.task-item{display:flex;align-items:flex-start;gap:7px;font-size:.76rem;padding:6px 9px;border-radius:8px;
  background:var(--surface2);line-height:1.45}
.task-item.is-done{background:rgba(53,209,122,.13);color:#9be6bf}
.task-check{width:15px;height:15px;border-radius:50%;border:2px solid var(--line);flex:none;margin-top:2px}
.task-item.is-done .task-check{background:var(--green);border-color:var(--green)}
.task-hint{display:block;font-size:.68rem;color:var(--muted);margin-top:1px}
.task-item.is-done .task-hint{color:#6fbd97}
.task-st{font-size:.62rem;color:var(--violet);margin-left:auto;flex:none;white-space:nowrap}

.pg-lang.pin-um{position:absolute;left:12px;bottom:60px;z-index:20}

@media (min-width:960px){
  body{flex-direction:row}
  #panel{width:376px;max-height:none;height:100%;border-top:none;border-left:1px solid var(--line);padding:16px}
}
@media (max-width:660px){
  /* flex:none สำคัญ — ไม่งั้นแถบพวกนี้โดนบีบจนตัวอักษรโดนตัดตอนพื้นที่ไม่พอ */
  .bar,.status{position:static;margin:8px 12px 0;border-radius:14px;max-width:none;flex:none}
  .readout{position:static;margin:8px 12px 0;justify-content:flex-start;max-width:none;flex:none}
  .stage-foot{position:static;padding:8px 12px 10px;flex:none}
  #stage{display:flex;flex-direction:column;min-height:52vh;overflow-y:auto}
  #webgl-canvas{flex:1;min-height:230px}
  .btn-submit{margin-left:0;flex:1}
  .pg-lang.pin-um{position:static;display:inline-flex;margin:0 12px 8px}
  /* แถบสถานีเลื่อนแนวนอนได้ ซ่อนแถบเลื่อนไว้ ไม่งั้นมันกินที่จนตัวอักษรโดนตัด */
  .station-bar{overflow-x:auto;flex-wrap:nowrap;scrollbar-width:none;padding:5px 6px}
  .station-bar::-webkit-scrollbar{display:none}
  .tab{flex:none}
}