:root{
  --bg:#0e1116; --bg2:#161b22; --card:#1b222c; --card2:#222b37;
  --line:#2a3340; --txt:#e6edf3; --dim:#9aa7b4; --faint:#6b7785;
  --accent:#3a86c8; --good:#3aa66f; --warn:#e0a23a;
  --back:#3aa66f; --knee:#c879e6; --shin:#e0a23a; --both:#5aa0e0; --mobility:#7f8b99;
  --radius:14px; --tap:44px;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{margin:0;padding:0;overflow-x:hidden}
body{
  background:var(--bg); color:var(--txt);
  font-family:-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased; line-height:1.45;
  padding-bottom:env(safe-area-inset-bottom);
}
button{font-family:inherit; cursor:pointer}

/* Top bar */
#topbar{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; gap:6px;
  padding:calc(env(safe-area-inset-top) + 10px) 14px 10px;
  background:rgba(14,17,22,.92); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
#topbar h1{font-size:18px; margin:0; font-weight:650; letter-spacing:.2px}
#topspacer{width:34px; margin-left:auto}
.iconbtn{
  width:34px; height:34px; border:none; border-radius:10px;
  background:var(--card2); color:var(--txt); font-size:20px; line-height:1;
  display:flex; align-items:center; justify-content:center;
}
.iconbtn:active{background:#2c3744}
.back{font-size:26px}

#app{max-width:680px; margin:0 auto; padding:14px 12px 40px}

/* Lists */
.lead{color:var(--dim); font-size:13.5px; margin:2px 4px 14px}
.grid{display:flex; flex-direction:column; gap:12px}

.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:16px; text-align:left; width:100%; color:inherit;
  display:flex; align-items:center; gap:14px; transition:background .12s;
}
.card:active{background:var(--card2)}
.card .accent{width:6px; align-self:stretch; border-radius:6px; min-height:46px}
.card .grow{flex:1; min-width:0}
.card h2{margin:0; font-size:17px; font-weight:640}
.card .meta{color:var(--dim); font-size:13px; margin-top:3px}
.card .chev{color:var(--faint); font-size:22px}
.card .ring{
  --p:0; width:42px; height:42px; border-radius:50%; flex:none;
  display:flex; align-items:center; justify-content:center;
  font-size:11px; color:var(--dim);
  background:conic-gradient(var(--good) calc(var(--p)*1%), var(--line) 0);
}
.card .ring i{width:34px;height:34px;border-radius:50%;background:var(--card);display:flex;align-items:center;justify-content:center;font-style:normal}

/* Section header inside a program */
.sec-note{
  background:var(--bg2); border:1px solid var(--line); border-radius:12px;
  padding:11px 13px; color:var(--dim); font-size:13px; margin:0 0 14px;
}

/* Exercise rows */
.exrow{
  display:flex; align-items:center; gap:12px;
  background:var(--card); border:1px solid var(--line); border-radius:12px;
  padding:10px 12px; margin-bottom:10px;
}
.exrow.done{opacity:.62}
.chk{
  width:var(--tap); height:var(--tap); flex:none; border:none; background:transparent;
  display:flex; align-items:center; justify-content:center;
}
.chk .box{
  width:24px; height:24px; border-radius:7px; border:2px solid var(--faint);
  display:flex; align-items:center; justify-content:center; color:#0e1116; font-size:16px;
}
.exrow.done .chk .box{background:var(--good); border-color:var(--good)}
.exbody{flex:1; min-width:0}
.exbody .nm{font-size:15.5px; font-weight:560}
.exrow.done .exbody .nm{text-decoration:line-through; text-decoration-color:var(--faint)}
.exbody .rx{color:var(--accent); font-size:13px; font-weight:560; margin-top:1px}
.exbody .nt{color:var(--dim); font-size:12.5px; margin-top:2px}
.tag{
  display:inline-block; font-size:10px; font-weight:700; letter-spacing:.4px;
  padding:1px 6px; border-radius:6px; margin-left:6px; vertical-align:middle; text-transform:uppercase;
  color:#0e1116;
}
.tag.back{background:var(--back)} .tag.knee{background:var(--knee)}
.tag.shin{background:var(--shin)} .tag.both{background:var(--both)} .tag.mobility{background:var(--mobility)}
.play{
  width:var(--tap); height:var(--tap); flex:none; border:none; border-radius:11px;
  background:var(--accent); color:#fff; font-size:16px;
  display:flex; align-items:center; justify-content:center;
}
.play:active{filter:brightness(.9)}
.play.none{background:var(--card2); color:var(--faint)}

/* Complete bar */
.progress{margin:6px 4px 14px; color:var(--dim); font-size:13px; display:flex; align-items:center; gap:10px}
.bar{flex:1; height:7px; border-radius:6px; background:var(--line); overflow:hidden}
.bar i{display:block; height:100%; background:var(--good); width:0; transition:width .2s}
.actions{display:flex; gap:10px; margin-top:18px}
.btn{
  flex:1; border:none; border-radius:12px; padding:14px; font-size:15px; font-weight:620;
  background:var(--good); color:#08130d;
}
.btn.ghost{background:var(--card2); color:var(--txt); flex:0 0 auto; padding:14px 16px}
.btn:active{filter:brightness(.92)}

.history{margin-top:22px; border-top:1px solid var(--line); padding-top:14px}
.history h3{font-size:13px; color:var(--dim); margin:0 0 8px; font-weight:600; text-transform:uppercase; letter-spacing:.5px}
.history .row{display:flex; justify-content:space-between; font-size:13px; color:var(--dim); padding:5px 2px; border-bottom:1px solid var(--line)}
.history .none{color:var(--faint); font-size:13px}

/* Video modal */
.modal{position:fixed; inset:0; z-index:50; display:flex; align-items:center; justify-content:center; padding:16px}
.modal[hidden]{display:none}
.modal-backdrop{position:absolute; inset:0; background:rgba(0,0,0,.78)}
.modal-card{position:relative; width:100%; max-width:680px; z-index:1}
.modal-close{position:absolute; top:-44px; right:0; background:rgba(255,255,255,.12)}
.video-wrap{position:relative; width:100%; padding-top:56.25%; background:#000; border-radius:12px; overflow:hidden}
.video-wrap iframe{position:absolute; inset:0; width:100%; height:100%; border:0}
#modalCaption{color:var(--dim); font-size:13px; margin:10px 2px 0; text-align:center}

/* Toast */
.toast{
  position:fixed; left:50%; bottom:calc(env(safe-area-inset-bottom) + 24px); transform:translateX(-50%);
  background:var(--good); color:#08130d; font-weight:600; font-size:14px;
  padding:11px 18px; border-radius:999px; z-index:60; box-shadow:0 6px 20px rgba(0,0,0,.4);
}
.toast[hidden]{display:none}