/* Physics Studio progress dashboard (shared by the student overlay and the teacher page) */
.pd{--pd-bg:#eef2f7;--pd-card:#ffffff;--pd-line:#dbe2ec;--pd-text:#1c2636;--pd-muted:#667389;--pd-track:#e6ebf2;--pd-good:#1f9254;--pd-warn:#c98a00;--pd-bad:#d23b3b;--pd-amber:#ffb020;
  font-family:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;color:var(--pd-text);font-size:14px;line-height:1.35;-webkit-font-smoothing:antialiased}
html[data-theme="dark"] .pd{--pd-bg:#0d1421;--pd-card:#162033;--pd-line:#27344d;--pd-text:#e6edf8;--pd-muted:#9aa8bf;--pd-track:#243148}
.pd *{box-sizing:border-box}
.pd button{font:inherit;cursor:pointer}

/* ---------- hero ---------- */
.pd-hero{background:linear-gradient(120deg,#12213a 0%,#1b4b8f 58%,#0f8b9d 100%);color:#fff;border-radius:18px;padding:22px 24px 20px;position:relative;overflow:hidden}
.pd-hero::after{content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 68%);pointer-events:none}
.pd-top{display:flex;gap:16px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;position:relative;z-index:1}
.pd-top small{display:block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;opacity:.75;font-weight:600}
.pd-top h1{margin:3px 0 4px;font-size:28px;line-height:1.15;font-weight:700;letter-spacing:-.01em}
.pd-top p{margin:0;opacity:.88;font-size:14px;max-width:640px}
.pd-chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.pd-chip{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:3px 11px;font-size:12px;font-weight:600}
.pd-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.pd-btn{background:var(--pd-amber);color:#201600;border:0;border-radius:999px;padding:10px 20px;font-weight:700;font-size:14px;box-shadow:0 6px 16px -8px rgba(0,0,0,.5)}
.pd-btn:hover{filter:brightness(1.06)}
.pd-btn.ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.3);box-shadow:none;padding:9px 16px}
.pd-main{display:flex;gap:26px;align-items:center;flex-wrap:wrap;margin-top:18px;position:relative;z-index:1}
.pd-ring{position:relative;width:152px;height:152px;flex:none}
.pd-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.pd-ring .t{stroke:rgba(255,255,255,.2)}
.pd-ring .p{stroke:var(--pd-amber);stroke-linecap:round;transition:stroke-dasharray .8s cubic-bezier(.2,.8,.2,1)}
.pd-ring .c{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.pd-ring .c b{font-size:38px;line-height:1;font-weight:800;letter-spacing:-.02em}
.pd-ring .c span{font-size:11px;opacity:.8;margin-top:4px;text-transform:uppercase;letter-spacing:.08em}
.pd-mid{flex:1 1 360px;min-width:0}
.pd-mid .pd-sum{font-size:15px;font-weight:600;margin-bottom:10px}
.pd-mid .pd-sum span{opacity:.85;font-weight:400}
.pd-strip{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:6px;background:rgba(0,0,0,.18);border-radius:12px;padding:10px 10px 8px}
.pd-col{display:flex;flex-direction:column;align-items:center;gap:5px;min-width:0}
.pd-colbar{width:100%;max-width:26px;height:62px;border-radius:7px;background:rgba(255,255,255,.14);display:flex;align-items:flex-end;overflow:hidden}
.pd-colbar i{display:block;width:100%;border-radius:7px 7px 0 0;min-height:0}
.pd-col b{font-size:10px;font-weight:600;opacity:.85;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.pd-kpis{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;flex:0 1 270px}
.pd-kpi{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:9px 13px}
.pd-kpi b{display:block;font-size:24px;line-height:1.1;font-weight:700}
.pd-kpi span{font-size:12px;opacity:.85}

/* ---------- sections ---------- */
.pd-h{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin:24px 2px 10px;font-size:17px;font-weight:700;color:var(--pd-text)}
.pd-h small{font-size:12.5px;color:var(--pd-muted);font-weight:500}
.pd-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.pd-card{background:var(--pd-card);border:1px solid var(--pd-line);border-top:4px solid var(--c);border-radius:14px;padding:14px 15px 13px;display:flex;flex-direction:column;gap:9px;box-shadow:0 8px 22px -18px rgba(18,33,58,.5)}
.pd-card.new{opacity:.92}
.pd-ch{display:flex;align-items:center;gap:10px}
.pd-ch h3{margin:0;font-size:15px;line-height:1.2;font-weight:700;flex:1;min-width:0}
.pd-ch h3 small{display:block;font-size:11.5px;color:var(--pd-muted);font-weight:500;margin-top:2px}
.pd-mini{position:relative;width:46px;height:46px;flex:none}
.pd-mini svg{width:100%;height:100%;transform:rotate(-90deg)}
.pd-mini .t{stroke:var(--pd-track)}
.pd-mini .p{stroke:var(--c);stroke-linecap:round}
.pd-mini b{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800}
.pd-rows{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.pd-rows li{display:grid;grid-template-columns:104px minmax(0,1fr) 88px;gap:8px;align-items:center;font-size:12.5px}
.pd-rows .l{color:var(--pd-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pd-rows .b{height:7px;border-radius:99px;background:var(--pd-track);overflow:hidden}
.pd-rows .b i{display:block;height:100%;border-radius:99px;background:var(--c);transition:width .7s cubic-bezier(.2,.8,.2,1)}
.pd-rows .n{text-align:right;color:var(--pd-muted);font-variant-numeric:tabular-nums;font-size:12px;white-space:nowrap}
.pd-rows li.full .n{color:var(--pd-good);font-weight:700}
.pd-rows li.full .n::before{content:"\2713 "}
.pd-rows li.bonus{opacity:.75;border-top:1px dashed var(--pd-line);padding-top:6px;margin-top:1px}
.pd-rows li.bonus .b i{background:var(--pd-muted)}
.pd-foot{font-size:12px;color:var(--pd-muted);border-top:1px solid var(--pd-line);padding-top:8px;line-height:1.4}
.pd-foot b{color:var(--pd-text);font-weight:600}
.pd-foot.ok{color:var(--pd-good);font-weight:700}

.pd-bottom{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:14px;margin-top:14px}
.pd-box{background:var(--pd-card);border:1px solid var(--pd-line);border-radius:14px;padding:14px 16px;box-shadow:0 8px 22px -18px rgba(18,33,58,.5)}
.pd-box h4{margin:0 0 10px;font-size:14px;font-weight:700}
.pd-box h4 small{font-weight:500;color:var(--pd-muted);margin-left:6px;font-size:12px}
.pd-heat{display:grid;grid-template-columns:repeat(7,1fr);gap:5px;max-width:320px}
.pd-heat .d{font-size:10px;color:var(--pd-muted);text-align:center}
.pd-heat i{display:block;aspect-ratio:4/3;border-radius:6px;background:var(--pd-track);position:relative}
.pd-heat i.a1{background:#9fd5c4}.pd-heat i.a2{background:#4fb393}.pd-heat i.a3{background:#1f8f6d}.pd-heat i.a4{background:#126a50}
html[data-theme="dark"] .pd-heat i.a1{background:#24574a}html[data-theme="dark"] .pd-heat i.a2{background:#2f8a70}html[data-theme="dark"] .pd-heat i.a3{background:#3fb28f}html[data-theme="dark"] .pd-heat i.a4{background:#6fd9b6}
.pd-heat i.today{outline:2px solid var(--pd-amber);outline-offset:1px}
.pd-heat i.fut{background:transparent}
.pd-note{margin:10px 0 0;font-size:12.5px;color:var(--pd-muted)}
.pd-tests{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.pd-tests li{display:flex;align-items:center;gap:10px;font-size:13px}
.pd-tests .sc{flex:none;min-width:50px;text-align:center;border-radius:8px;padding:4px 7px;font-weight:700;font-size:12.5px;color:#fff;background:var(--pd-good)}
.pd-tests .sc.m{background:var(--pd-warn)}.pd-tests .sc.l{background:var(--pd-bad)}
.pd-tests .w{flex:1;min-width:0}.pd-tests .w b{display:block;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pd-tests .w span{font-size:11.5px;color:var(--pd-muted)}
.pd-focus{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.pd-focus li{display:flex;gap:10px;align-items:flex-start;font-size:13px}
.pd-focus .k{flex:none;width:10px;height:10px;border-radius:50%;background:var(--c,#1b4b8f);margin-top:4px}
.pd-focus b{font-weight:700}
.pd-focus span{display:block;color:var(--pd-muted);font-size:12.5px;margin-top:1px}
.pd-empty{color:var(--pd-muted);font-size:13px;padding:6px 0}

@media (max-width:640px){
  .pd-hero{padding:18px 16px 16px;border-radius:14px}
  .pd-top h1{font-size:23px}
  .pd-ring{width:128px;height:128px}.pd-ring .c b{font-size:32px}
  .pd-main{gap:16px}
  .pd-grid{grid-template-columns:1fr}
  .pd-rows li{grid-template-columns:96px minmax(0,1fr) 84px}
  .pd-kpis{flex:1 1 100%}
}

/* ---------- student overlay (inside Physics Studio) ---------- */
#psDash{position:fixed;inset:0;z-index:9000;overflow:auto;background:#eef2f7;display:none}
html[data-theme="dark"] #psDash{background:#0d1421}
#psDash.on{display:block}
#psDash .pd-wrap{max-width:1180px;margin:0 auto;padding:18px 18px 40px}
#psDash .pd-load{padding:18vh 20px;text-align:center;color:#667389;font-size:15px}
#psDash .pd-err{max-width:480px;margin:14vh auto;padding:20px;text-align:center;background:#fff;border:1px solid #dbe2ec;border-radius:14px;color:#1c2636}
#psDash .pd-err p{color:#667389;margin:6px 0 16px}
#psDash .pd-err .pd-btn{background:#1b4b8f;color:#fff}
#psDashBtn{position:absolute;top:16px;right:132px;z-index:3;display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-weight:700;font-size:13px;padding:7px 13px;border-radius:999px;cursor:pointer;line-height:1}
#psDashBtn svg{width:17px;height:17px;flex:none}
#psDashBtn:hover{border-color:var(--amber-d);color:#8a5a00}
html[data-theme="dark"] #psDashBtn{background:#162033;color:#e6edf8;border-color:#27344d}
@media (max-width:640px){#psDashBtn{right:60px;padding:8px 9px}#psDashBtn span{display:none}}
.pd .pd-btn{background:#ffb020!important;color:#201600!important}
.pd .pd-btn.ghost{background:rgba(255,255,255,.14)!important;color:#fff!important}