:root{
  --teal:#1f7a8c; --teal-d:#155e6d; --ink:#16242a; --muted:#4f6470;
  --bg:#f4f7f8; --card:#ffffff; --line:#d8e4e7; --warm:#c9722e; --good:#2e8b57; --warn:#b5432f;
  --r:16px; --shadow:0 8px 26px rgba(31,122,140,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:19px;line-height:1.55;-webkit-font-smoothing:antialiased}
button{font-family:inherit}

.screen{display:none;min-height:100vh}
.screen.active{display:block}
.wrap{max-width:560px;margin:0 auto;padding:26px 20px 48px}

.logo{font-size:44px;font-weight:800;letter-spacing:-1px;text-align:center;margin:18px 0 10px;color:var(--ink)}
.logo span{color:var(--teal)}
.big-lead{font-size:21px;line-height:1.5;color:var(--muted);text-align:center;margin-bottom:22px}
.q{font-size:28px;line-height:1.25;letter-spacing:-.4px;margin:6px 0 22px}

/* Buttons — large, obvious, high-contrast */
.big-btn{display:block;width:100%;background:var(--teal);color:#fff;border:none;border-radius:14px;
  font-size:22px;font-weight:700;padding:20px;margin-top:20px;cursor:pointer;box-shadow:var(--shadow);min-height:64px}
.big-btn:active{background:var(--teal-d)}
.text-btn{display:block;width:100%;background:none;border:none;color:var(--teal);font-size:18px;font-weight:600;
  padding:16px;margin-top:8px;cursor:pointer}
.text-btn.back{text-align:left;width:auto;padding:6px 0 10px}
.primary{background:var(--teal);color:#fff;border:none;border-radius:12px;font-weight:700;cursor:pointer}
.ghost{background:#fff;color:var(--teal-d);border:2px solid var(--line);border-radius:12px;font-weight:600;cursor:pointer}
.big{font-size:19px;padding:16px 18px;min-height:58px}

/* Safety card */
.safe-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;box-shadow:var(--shadow)}
.safe-card b{font-size:19px;display:block;margin-bottom:10px}
.safe-card ul{padding-left:22px;font-size:18px;line-height:1.7}
.safe-card li{margin-bottom:4px}
.fine{font-size:16px;color:var(--muted);margin-top:12px}

/* Routine cards */
.cards{display:flex;flex-direction:column;gap:14px}
.rcard{display:flex;gap:16px;align-items:center;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:18px 18px;cursor:pointer;box-shadow:var(--shadow);text-align:left}
.rcard:active{background:#eef5f6}
.rcard .ic{width:56px;height:56px;border-radius:14px;background:#e7f1f3;display:grid;place-items:center;flex-shrink:0}
.rcard .ic svg{width:32px;height:32px;stroke:var(--teal);fill:none;stroke-width:2}
.rcard .t b{font-size:20px;display:block}
.rcard .t span{font-size:16px;color:var(--muted)}

/* Move list */
.movelist{display:flex;flex-direction:column;gap:10px;margin:6px 0 8px}
.mrow{display:flex;justify-content:space-between;align-items:center;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:14px 16px;font-size:18px}
.mrow .meta{color:var(--muted);font-size:16px;font-weight:600}
.mrow.head{background:#eaf2f4;border-color:#d0e0e3;font-weight:700}
.mrow small{font-size:14px}
.rom-good{color:var(--good);font-weight:600}
.rom-soft{color:var(--muted);font-weight:600}
.rom-warn{color:var(--warn);font-weight:700}

/* Get-ready instruction screen */
.ready-step{font-size:16px;font-weight:700;color:var(--teal);text-transform:uppercase;letter-spacing:.5px}
.demo{display:block;margin:6px auto 14px;background:#eef5f6;border-radius:16px;width:240px;height:260px;border:1px solid var(--line)}
.instr{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.instr-row{display:flex;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line);font-size:18px;line-height:1.45}
.instr-row:last-child{border-bottom:none}
.instr-row .lbl{flex-shrink:0;width:78px;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);padding-top:3px}
.instr-row.safe{background:#fdf3ee}.instr-row.safe .lbl{color:var(--warn)}
.instr-row.why{background:#eef6f0}.instr-row.why .lbl{color:var(--good)}
.target{text-align:center;font-size:20px;font-weight:700;margin:16px 0 0;color:var(--teal-d)}

/* Camera workout */
.cam-wrap{position:relative;width:100%;height:100vh;background:#0d1417;overflow:hidden}
#cam,#overlay{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
#cam{transform:scaleX(-1)}#overlay{transform:scaleX(-1)}
#hud{position:absolute;top:0;left:0;right:0;padding:16px 18px;text-align:center;
  background:linear-gradient(#0d1417cc,transparent);color:#fff;pointer-events:none}
#exName{font-size:22px;font-weight:700}
#bigNum{font-size:84px;font-weight:800;line-height:1;margin-top:4px;text-shadow:0 2px 12px rgba(0,0,0,.5)}
#bigNum span{font-size:30px;color:#bfe0e6}
.chip{display:inline-block;margin-top:6px;background:#ffffff;color:#16242a;font-size:17px;font-weight:700;
  padding:8px 16px;border-radius:999px}
.chip.rep{background:var(--good);color:#fff}.chip.down{background:var(--warm);color:#fff}
.chip.bad{background:var(--warn);color:#fff}
.cue{position:absolute;bottom:96px;left:16px;right:16px;text-align:center;color:#fff;font-size:18px;line-height:1.4;
  background:#0d1417bb;padding:12px 16px;border-radius:14px}
.work-ctrls{position:absolute;bottom:0;left:0;right:0;display:flex;gap:10px;padding:14px 16px calc(14px + env(safe-area-inset-bottom));
  background:linear-gradient(transparent,#0d1417cc)}
.work-ctrls button{flex:1}

/* Between / done */
.verdict-big{text-align:center;font-size:22px;font-weight:700;color:var(--good);margin-bottom:10px}
.verdict-big.soft{color:var(--muted)}
.rest-lead{text-align:center;font-size:18px;color:var(--muted)}
.rest-num{text-align:center;font-size:64px;font-weight:800;color:var(--teal);margin:6px 0}

@media (min-width:600px){ .cam-wrap{height:auto;aspect-ratio:3/4;border-radius:18px;margin:10px} }