/* แล็บอิเล็กทรอนิกส์ — บอร์ด PCB ทางซ้าย กล่องอุปกรณ์ทางขวา (จอเล็กซ้อนกัน) */
:root{
  --sans:'IBM Plex Sans Thai','Noto Sans Thai',system-ui,-apple-system,'Segoe UI',sans-serif;
  --ink:#191a24; --muted:#6b6c7e; --line:#e6e3dc; --surface:#fff; --bg:#f5f4ef;
  --brand:#16795c; --brand-ink:#0f5b45; --brand-soft:#dcefe7;
  --ok:#129a72; --warn:#d68a17; --danger:#e2564a; --copper:#c79a3f;
}
*{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}

/* ---------- เวที 3D ---------- */
#stage{position:relative;flex:1;min-height:0;background:#eef1ec}
#webgl-canvas{width:100%;height:100%;display:block;touch-action:none}
#stage.mode-wire #webgl-canvas{cursor:crosshair}
#stage.mode-erase #webgl-canvas{cursor:not-allowed}
#stage.placing #webgl-canvas{cursor:copy}

.bar{
  position:absolute;z-index:6;display:flex;gap:6px;align-items:center;flex-wrap:wrap;
  background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:999px;
  padding:5px 8px;box-shadow:0 4px 14px rgba(25,26,36,.08);max-width:calc(100% - 24px);
}
.tool-bar{left:12px;top:12px}
.power-bar{left:12px;top:62px;gap:10px;padding:6px 12px}

.tool{
  font-family:inherit;font-size:.78rem;font-weight:600;color:var(--muted);cursor:pointer;
  border:none;background:none;padding:6px 12px;border-radius:999px;min-height:32px;display:flex;align-items:center;gap:5px;
}
.tool.is-active{background:var(--brand);color:#fff}
.tool:disabled{opacity:.4;cursor:default}
.wb-select{font-family:inherit;font-size:.78rem;font-weight:600;color:var(--ink);
  border:1px solid var(--line);border-radius:999px;padding:5px 10px;background:var(--bg);max-width:170px}

.pw-btn{
  font-family:inherit;font-size:.78rem;font-weight:700;cursor:pointer;border-radius:999px;
  border:1px solid var(--line);background:var(--bg);color:var(--muted);padding:6px 14px;min-height:32px;
  display:flex;align-items:center;gap:6px;
}
.pw-btn.is-on{background:var(--ok);border-color:var(--ok);color:#fff}
.pw-dot{width:9px;height:9px;border-radius:50%;background:#c6c8d2}
.pw-btn.is-on .pw-dot{background:#eafff6;box-shadow:0 0 0 3px rgba(255,255,255,.35)}
.light-wrap{display:flex;align-items:center;gap:6px;font-size:.72rem;color:var(--muted)}
.light-wrap input[type=range]{width:96px;accent-color:var(--brand)}

.status{
  position:absolute;left:12px;top:112px;right:12px;
  background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:12px;
  padding:8px 13px;font-size:.82rem;box-shadow:0 4px 14px rgba(25,26,36,.08);
  pointer-events:none;max-width:min(560px,calc(100% - 24px));line-height:1.5;
}
.status.ok{border-color:#bfe9da;color:#0a6b50;background:#f0fbf7}
.status.bad{border-color:#f6cdc9;color:#8f2018;background:#fdf3f2}
.status.warn{border-color:#f7e2bd;color:#7d5209;background:#fffaf0}

/* ---------- แผงวัด ---------- */
.meter{
  position:absolute;right:12px;top:12px;display:flex;gap:13px;z-index:6;
  background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:14px;
  padding:9px 14px;box-shadow:0 4px 14px rgba(25,26,36,.08);
}
.meter-item{display:flex;flex-direction:column;align-items:center;min-width:58px}
.meter-item b{font-size:1rem;font-variant-numeric:tabular-nums;line-height:1.25}
.meter-item span{font-size:.64rem;color:var(--muted)}
.meter.is-danger{border-color:#f6cdc9;background:#fdf3f2}
.meter[hidden]{display:none}
.meter-probe{font-size:.68rem;color:var(--brand-ink);font-weight:700;align-self:center;
  max-width:96px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.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;box-shadow:0 2px 6px rgba(25,26,36,.12)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.45;pointer-events:none}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn-submit{background:var(--ok);color:#fff;margin-left:auto}

/* ---------- แผงข้าง ---------- */
#panel{
  flex:none;background:var(--surface);border-top:1px solid var(--line);
  padding:12px 14px 14px;display:flex;flex-direction:column;gap:10px;max-height:46vh;overflow-y:auto;
}
.panel-head{display:flex;align-items:baseline;gap:10px}
.panel-title{font-weight:700;font-size:.92rem}
.goal{font-size:.78rem;color:var(--muted);margin-left:auto;text-align:right}
.hint{margin:0;font-size:.74rem;color:var(--muted);line-height:1.5}
.sec-head{font-size:.78rem;font-weight:600;color:var(--muted);display:flex;align-items:center;gap:7px}
.sec-head span.pill{background:var(--brand-soft);color:var(--brand-ink);padding:1px 8px;border-radius:999px;font-size:.72rem}

/* ---------- กล่องอุปกรณ์ (การ์ดรูปย่อ 3 มิติ) ---------- */
.parts-box{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:7px}
.part-card{
  display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 4px 7px;
  border:1px solid var(--line);border-radius:12px;background:var(--bg);font-family:inherit;
  cursor:pointer;text-align:center;position:relative;
}
.part-card:hover{border-color:var(--brand);background:var(--brand-soft)}
.part-card.is-armed{border-color:var(--brand);background:var(--brand-soft);box-shadow:0 0 0 2px var(--brand-soft)}
.part-card canvas{width:66px;height:66px;display:block;image-rendering:auto}
.part-name{font-size:.72rem;font-weight:600;line-height:1.25}
.part-sub{font-size:.63rem;color:var(--muted)}

/* ---------- ตัวตรวจสอบ/แก้ไขชิ้นที่เลือก ---------- */
.inspector{border:1px solid var(--line);border-radius:12px;padding:9px 11px;display:flex;flex-direction:column;gap:8px;background:var(--bg)}
.insp-head{display:flex;align-items:center;gap:8px}
.insp-head canvas{width:44px;height:44px;flex:none;border-radius:8px;background:#fff;border:1px solid var(--line)}
.insp-name{font-size:.84rem;font-weight:700;line-height:1.2}
.insp-read{font-size:.7rem;color:var(--muted);font-variant-numeric:tabular-nums}
.insp-tools{margin-left:auto;display:flex;gap:4px}
.icon-btn{border:1px solid var(--line);background:#fff;border-radius:9px;width:32px;height:32px;
  cursor:pointer;font-size:.85rem;color:var(--muted);display:flex;align-items:center;justify-content:center}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-ink)}
.icon-btn.danger:hover{border-color:var(--danger);color:var(--danger)}
.insp-row{display:flex;align-items:center;gap:8px;font-size:.76rem;color:var(--muted)}
.insp-row input[type=number]{width:88px;padding:5px 8px;border:1px solid var(--line);border-radius:8px;
  font-family:inherit;font-size:.78rem;background:#fff}
.insp-row input[type=range]{flex:1;accent-color:var(--brand)}
.insp-row select{flex:1;font-family:inherit;font-size:.78rem;padding:5px 8px;border:1px solid var(--line);
  border-radius:8px;background:#fff;max-width:none}
.sw-toggle{border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 14px;
  font-family:inherit;font-size:.74rem;font-weight:600;cursor:pointer}
.sw-toggle.is-on{background:var(--ok);color:#fff;border-color:var(--ok)}
.insp-empty{font-size:.74rem;color:#a0a1b0;text-align:center;padding:6px 0}

/* ---------- รายการบนบอร์ด ---------- */
.board-list{border:1.5px dashed var(--line);border-radius:12px;padding:6px;display:flex;flex-direction:column;
  gap:4px;min-height:48px;max-height:168px;overflow-y:auto}
.bl-empty{margin:auto;color:#a0a1b0;font-size:.78rem}
.bl-item{display:flex;align-items:center;gap:8px;background:var(--bg);border-left:3px solid var(--brand);
  border-radius:8px;padding:5px 8px;font-size:.77rem;cursor:pointer}
.bl-item:hover{background:var(--brand-soft)}
.bl-item.is-sel{background:var(--brand-soft);border-left-color:var(--brand-ink)}
.bl-item.is-burnt{border-left-color:var(--danger);opacity:.6}
.bl-item b{font-weight:600}
.bl-val{margin-left:auto;color:var(--muted);font-size:.72rem;font-variant-numeric:tabular-nums}

/* ---------- โจทย์ ---------- */
.task-list{display:flex;flex-direction:column;gap:4px}
.task-item{display:flex;align-items:flex-start;gap:7px;font-size:.77rem;padding:6px 9px;border-radius:8px;
  background:var(--bg);line-height:1.4;cursor:help}
.task-item.is-done{background:#e9f8f2;color:#0a6b50}
.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(--ok);border-color:var(--ok)}
.task-hint{display:block;font-size:.69rem;color:var(--muted);margin-top:1px}
.task-item.is-done .task-hint{color:#3d8a72}

/* ปุ่มสลับภาษา — ใต้แผงวัดมุมขวาบน */
.pg-lang.pin-um{position:absolute;top:70px;right:12px;z-index:20}

/* ---------- จอกว้าง ---------- */
@media (min-width:900px){
  body{flex-direction:row}
  #panel{width:346px;max-height:none;height:100%;border-top:none;border-left:1px solid var(--line);padding:16px}
}
/* ---------- จอเล็ก ---------- */
@media (max-width:620px){
  .bar,.meter,.status{position:static;margin:8px 12px 0;border-radius:14px;max-width:none}
  .meter{justify-content:space-between;gap:8px;overflow-x:auto}
  .meter-item{min-width:48px}
  .stage-foot{position:static;padding:8px 12px 10px}
  /* 52vh + 46vh ของแผงข้าง = 98vh พอดีจอ ไม่ให้ท้ายแผงโดนตัด */
  #stage{display:flex;flex-direction:column;min-height:52vh;overflow-y:auto}
  #webgl-canvas{flex:1;min-height:220px}
  .btn-submit{margin-left:0;flex:1}
  .pg-lang.pin-um{position:static;display:inline-flex;margin:8px 12px}
  .parts-box{grid-template-columns:repeat(auto-fill,minmax(84px,1fr))}
  .part-card canvas{width:56px;height:56px}
}