:root{
  --bg:#0b0d12; --panel:#141822; --line:#232a38;
  --ink:#eef2f8; --dim:#8b95a8;
  --go:#3ddc97; --warn:#ffcf5c; --bad:#ff6b6b; --accent:#7c8cff;
  --safe-t:env(safe-area-inset-top,0px); --safe-b:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);
  font:16px/1.5 ui-sans-serif,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  overscroll-behavior:none}
body{overflow:hidden}
h1,h2,h3{margin:0 0 .4em;line-height:1.1;letter-spacing:-.02em}
h1{font-size:2.6rem;font-weight:800}
h2{font-size:1.7rem;font-weight:700}
h3{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.09em;color:var(--dim);margin-top:1.6rem}
p{margin:0 0 1rem}

.screen{position:fixed;inset:0;display:none;opacity:0;transition:opacity .22s ease}
.screen.active{display:block;opacity:1}
.wrap{height:100%;overflow-y:auto;-webkit-overflow-scrolling:touch;
  padding:calc(var(--safe-t) + 28px) 22px calc(var(--safe-b) + 34px);max-width:560px;margin:0 auto}

/* ---------- intro ---------- */
.brand{margin-bottom:1.6rem}
.logo{width:46px;height:46px;border-radius:14px;background:linear-gradient(140deg,var(--accent),#4be0c0);
  display:grid;place-items:center;margin-bottom:1.1rem}
.logo span{width:16px;height:16px;border:3px solid #0b0d12;border-radius:50%}
.tag{color:var(--dim);font-size:1.05rem;max-width:26ch}
.pills{list-style:none;padding:0;margin:0 0 1.8rem;display:grid;gap:8px}
.pills li{background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:11px 14px;
  display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.pills b{font-size:.95rem}
.pills span{color:var(--dim);font-size:.8rem;text-align:right}
.cta{display:block;width:100%;padding:17px;border:0;border-radius:15px;background:var(--ink);color:#0b0d12;
  font:700 1.05rem/1 inherit;cursor:pointer}
.cta:active{transform:scale(.985)}
.ghost{display:block;width:100%;padding:14px;margin-top:10px;border:1px solid var(--line);border-radius:15px;
  background:transparent;color:var(--dim);font:600 .95rem/1 inherit;text-align:center;text-decoration:none;cursor:pointer}
.fineprint{color:var(--dim);font-size:.78rem;line-height:1.55;margin-top:14px}
.fineprint b{color:#b9c2d4}
.statline{margin-top:16px;padding:11px 14px;border:1px dashed var(--line);border-radius:12px;
  color:var(--dim);font-size:.78rem}
.how{margin-top:22px;border-top:1px solid var(--line);padding-top:14px}
.how summary{cursor:pointer;color:var(--dim);font-size:.85rem}
.how ol{color:var(--dim);font-size:.85rem;padding-left:1.1rem;margin:.8rem 0}
.how li{margin-bottom:.4rem}

/* ---------- coach ---------- */
.stage{position:absolute;inset:0;background:#000;overflow:hidden}
#video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}
#hud{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}

.topbar{position:absolute;top:calc(var(--safe-t) + 12px);left:0;right:0;display:flex;
  align-items:center;justify-content:center;gap:12px;padding:0 16px;pointer-events:none}
.timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:.95rem;
  background:rgba(0,0,0,.45);padding:5px 11px;border-radius:999px;backdrop-filter:blur(6px)}
.fps{position:absolute;right:16px;color:var(--dim);font-size:.7rem;font-variant-numeric:tabular-nums}
.rec{position:absolute;left:16px;display:flex;align-items:center;gap:6px;font-size:.7rem;
  font-weight:700;letter-spacing:.08em;color:#ff8b8b}
.rec i{width:8px;height:8px;border-radius:50%;background:var(--bad);animation:blink 1.2s infinite}
@keyframes blink{50%{opacity:.25}}

.cue{position:absolute;top:calc(var(--safe-t) + 54px);left:14px;right:14px;
  display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:18px;
  background:rgba(12,15,22,.72);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.12);
  opacity:0;transform:translateY(-10px);transition:opacity .18s ease,transform .18s ease}
.cue[data-on="1"]{opacity:1;transform:none}
.cue-text b{display:block;font-size:1.35rem;font-weight:800;letter-spacing:-.02em}
.cue-text span{display:block;color:var(--dim);font-size:.8rem}
.cue-arrow{flex:0 0 42px;height:42px;display:grid;place-items:center;border-radius:12px;
  background:var(--warn);color:#0b0d12;font-size:1.5rem;font-weight:900}
.cue-arrow:empty{display:none}

.loading{position:absolute;inset:0;display:grid;place-items:center;gap:14px;align-content:center;
  background:rgba(11,13,18,.92);text-align:center;padding:24px}
.loading p{color:var(--dim);font-size:.9rem;margin:0;max-width:24ch}
.spinner{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--accent);
  border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.bottombar{position:absolute;left:0;right:0;bottom:calc(var(--safe-b) + 20px);
  display:flex;align-items:center;justify-content:space-between;padding:0 26px;gap:18px}
.stop{width:74px;height:74px;border-radius:50%;border:4px solid rgba(255,255,255,.85);
  background:transparent;display:grid;place-items:center;cursor:pointer;flex:0 0 auto}
.stop span{width:26px;height:26px;border-radius:6px;background:var(--bad);display:block}
.meterwrap{display:flex;flex-direction:column;align-items:center;gap:6px;width:52px}
.meterwrap span{font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.meter{position:relative;width:10px;height:104px;border-radius:999px;background:rgba(255,255,255,.14);overflow:hidden}
.meter .band{position:absolute;left:0;right:0;bottom:25%;height:45%;background:rgba(61,220,151,.42)}
.meter .needle{position:absolute;left:-4px;right:-4px;height:4px;border-radius:2px;background:#fff;bottom:0;
  transition:bottom .12s linear}
.meter .fill{position:absolute;left:0;right:0;bottom:0;height:0;background:var(--go);transition:height .2s ease,background .2s ease}

/* ---------- report ---------- */
.sub{color:var(--dim);margin-top:-.3rem}
.rings{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:1.4rem 0}
.ring{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:16px;
  padding:14px 6px 12px;text-align:center}
.ring svg{width:64px;height:64px;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:4}
.ring .bg{stroke:rgba(255,255,255,.09)}
.ring .fg{stroke:var(--go);stroke-linecap:round;stroke-dasharray:113;stroke-dashoffset:113;
  transition:stroke-dashoffset .8s cubic-bezier(.2,.8,.2,1)}
.ring b{position:absolute;top:38px;left:0;right:0;font-size:1.05rem;font-weight:800}
.ring span{display:block;margin-top:4px;font-size:.68rem;letter-spacing:.09em;text-transform:uppercase;color:var(--dim)}
.verdict{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:12px;padding:13px 15px;font-size:.95rem}
.faults{list-style:none;padding:0;margin:.6rem 0 0;display:grid;gap:7px}
.faults li{display:flex;justify-content:space-between;gap:12px;background:var(--panel);
  border:1px solid var(--line);border-radius:11px;padding:10px 13px;font-size:.9rem}
.faults li em{font-style:normal;color:var(--dim);font-size:.8rem;white-space:nowrap}
.faults li.none{justify-content:center;color:var(--go)}
#playback{width:100%;border-radius:14px;margin-top:.6rem;background:#000}
#btn-again{margin-top:1.6rem}

.toast{position:fixed;left:50%;bottom:calc(var(--safe-b) + 26px);transform:translateX(-50%);
  background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:11px 16px;
  border-radius:12px;font-size:.85rem;z-index:50;max-width:88vw;text-align:center}