/* Reset, page frame, and the primitives used everywhere. */

*{box-sizing:border-box}
/* class rules like display:flex otherwise beat the hidden attribute and show both states at once */
[hidden]{display:none !important;}
/* off-screen but still rendered: a display:none file input cannot be opened on iOS */
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.5;-webkit-font-smoothing:antialiased;}

.app{max-width:680px;margin:0 auto;padding:24px 16px 70px;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

h2.sec{font-size:12px;font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);
  margin:26px 0 10px;font-weight:600;display:flex;align-items:baseline;gap:9px;}
h2.sec .hint{text-transform:none;letter-spacing:0;font-family:var(--font);font-size:12px;font-weight:400;}

.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);}

.btn{border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);
  font-size:14.5px;font-weight:650;border-radius:10px;padding:11px 16px;}
.btn.ghost{background:transparent;color:var(--accent);}
.btn.wide{width:100%;}
.btn.sm{font-size:13px;padding:8px 13px;}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}

.field-label{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-soft);font-weight:600;margin-bottom:7px;}

.chips{display:flex;flex-wrap:wrap;gap:7px;}
.chip{font-size:13px;padding:7px 12px;border-radius:20px;border:1px solid var(--line);
  background:var(--surface-2);color:var(--ink);font-weight:550;transition:none;}
.chip[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);}
.chip.danger[aria-pressed="true"]{background:var(--stop);border-color:var(--stop);color:#fff;}

.note{margin-top:22px;font-size:12px;color:var(--ink-soft);background:var(--surface-2);border:1px solid var(--line);
  border-radius:11px;padding:12px 14px;line-height:1.5;}

.in-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;}
.in-f label{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.07em;text-transform:uppercase;
  color:var(--ink-soft);font-weight:600;margin-bottom:5px;}
.in-f input{width:100%;border:1px solid var(--line);border-radius:9px;background:var(--surface-2);
  color:var(--ink);font-family:var(--mono);font-size:15px;padding:9px 11px;font-variant-numeric:tabular-nums;}

/* Storage failures are silent by nature, so they get a persistent bar rather
   than a toast: losing a month of training to a full disk must be impossible to miss. */
.storage-warn{position:sticky;top:0;z-index:45;background:var(--stop);color:#fff;
  font-size:13px;font-weight:600;line-height:1.4;padding:10px 14px;text-align:center;}
.storage-warn a,.storage-warn button{color:#fff;text-decoration:underline;background:none;border:0;
  font:inherit;padding:0;cursor:pointer;}

/* Spacing utilities. These exist so the markup carries no style attributes and
   the Content-Security-Policy can stay on style-src 'self' with no unsafe-inline. */
.mt-14{margin-top:14px;}
.mt-16{margin-top:16px;}

@media (prefers-reduced-motion:no-preference){
  .chip,.seg,.dial-opt,.btn{transition:background-color .12s ease,border-color .12s ease,color .12s ease;}
}