/* Practice page: draw a character on paper, or say one aloud. The 田字格 is
   the one surface that carries colour; everything around it stays quiet. */

.practice-main{max-width:780px;padding-top:20px;}
.practice-head{max-width:600px;margin:0 auto 22px;}
.practice-head h1{margin:0 0 8px;font-size:clamp(28px,6vw,38px);letter-spacing:-.02em;}
.practice-head .back-link{display:inline-block;margin-top:10px;font-size:15px;color:var(--ink-2);}
.practice-head .back-link:hover{color:var(--ink);}

/* ── mode switch ───────────────────────────────────────────── */
.mode-bar{
  display:flex;gap:4px;padding:4px;margin:0 0 16px;
  background:var(--surface-2);border:1px solid var(--rule);border-radius:12px;
}
.mode-btn{
  flex:1;min-height:44px;padding:0 10px;border:0;border-radius:9px;
  background:transparent;color:var(--ink-2);font-family:inherit;font-size:15px;
  font-weight:550;cursor:pointer;
}
.mode-btn[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow);}
.mode-btn:hover{color:var(--ink);}
.mode-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.mode-break{display:none;}

/* ── progress ──────────────────────────────────────────────── */
.practice-progress{
  display:flex;align-items:center;gap:14px;margin:0 0 14px;
  font-family:var(--mono);font-size:13px;color:var(--ink-2);
}
.progress-track{flex:1;height:4px;background:var(--surface-2);border-radius:999px;overflow:hidden;}
.progress-fill{height:100%;width:0;background:var(--accent);border-radius:999px;
  transition:width .35s ease;}

/* ── panel ─────────────────────────────────────────────────── */
.practice-panel{
  background:var(--surface);border:1px solid var(--rule-strong);border-radius:22px;
  padding:24px;box-shadow:var(--shadow);
}
.word-head{text-align:center;margin:0 0 18px;}
.word-head .hanzi{
  display:block;font-family:var(--han);font-weight:600;line-height:1.1;
  font-size:clamp(44px,12vw,64px);letter-spacing:.02em;
}
.word-head .pinyin{
  display:block;margin-top:6px;font-family:var(--mono);font-size:15px;color:var(--ink-2);
}
.word-head .meaning{display:block;margin-top:4px;font-size:16px;color:var(--ink-2);}

.char-tabs{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin:0 0 14px;}
.char-tab{
  min-width:44px;min-height:44px;padding:0 12px;border-radius:9px;
  border:1px solid var(--rule-strong);background:var(--surface);color:var(--ink);
  font-family:var(--han);font-size:24px;cursor:pointer;
}
.char-tab[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft);color:var(--ink);}
.char-tab:hover{border-color:var(--accent);}
.char-tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.char-tab .n{font-family:var(--mono);font-size:10px;color:var(--ink-2);display:block;}

.draw-layout{display:grid;grid-template-columns:1fr;gap:18px;align-items:start;justify-items:center;}
.model{
  display:none;text-align:center;
}
.model .model-label{
  display:block;margin:0 0 4px;font-family:var(--mono);font-size:11px;
  letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);
}
.model .model-char{
  display:block;font-family:var(--han);font-size:84px;line-height:1.15;color:var(--ink);
}

/* The 田字格. One bright surface, red ink for the learner's hand. */
.grid-box{
  position:relative;width:min(100%,320px);aspect-ratio:1;
  border:1px solid var(--rule-strong);border-radius:14px;background:var(--surface-2);
  background-image:
    linear-gradient(var(--grid),var(--grid)),
    linear-gradient(var(--grid),var(--grid));
  background-size:1px 100%,100% 1px;
  background-position:center,center;background-repeat:no-repeat;
  touch-action:none;user-select:none;-webkit-user-select:none;
  overflow:hidden;
}
.grid-box::before,.grid-box::after{
  content:"";position:absolute;background:var(--grid);opacity:.55;pointer-events:none;
}
.grid-box::before{left:50%;top:6%;bottom:6%;width:1px;}
.grid-box::after{top:50%;left:6%;right:6%;height:1px;}
#writer{position:relative;z-index:1;width:100%;height:100%;}
#writer svg{display:block;width:100%!important;height:100%!important;}

/* Every button in the panel is a ghost unless it is the one primary action.
   Without this the browser paints its own grey button face on the seal. */
.practice-panel .btn{background:transparent;border-color:var(--rule-strong);color:var(--ink);}
.practice-panel .btn:hover{background:var(--surface-2);}
.practice-panel .btn.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent);}
.practice-panel .btn.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);}
.practice-panel .btn:disabled{opacity:.5;cursor:not-allowed;}
.practice-panel .btn:disabled:hover{background:transparent;}

.draw-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:16px;}
.draw-actions .btn{min-height:44px;}

.draw-status{
  min-height:24px;margin:12px 0 0;text-align:center;font-size:15px;line-height:1.45;
  color:var(--ink-2);
}
.draw-status.ok{color:var(--growth);font-weight:550;}
.draw-status.bad{color:var(--alert);font-weight:550;}
.draw-status .score{font-family:var(--mono);font-size:20px;}

.panel-note{
  margin:16px 0 0;padding-top:14px;border-top:1px solid var(--rule);
  font-size:13px;line-height:1.55;color:var(--ink-2);max-width:62ch;
}
.panel-note.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ── stroke order plan ─────────────────────────────────────── */
.plan-wrap{
  margin:18px 0 0;padding-top:14px;border-top:1px solid var(--rule);
}
.plan-label{
  display:block;font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink-2);text-align:center;
}
.stroke-plan{
  display:flex;flex-wrap:wrap;justify-content:center;gap:6px;list-style:none;
  margin:8px 0 0;padding:0;font-size:13px;line-height:1.4;
}
.stroke-chip{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:5px 9px;border:1px solid var(--rule);border-radius:8px;
  background:var(--surface);color:var(--ink-2);
}
.stroke-chip .n{
  font-family:var(--mono);font-size:11px;color:var(--ink-2);min-width:1.1em;text-align:right;
}
.stroke-chip .arrow{font-size:14px;line-height:1;color:var(--ink);}
/* Drawn strokes step back so the next one is the only bright chip. */
.stroke-chip.done{border-color:var(--rule);opacity:.55;}
.stroke-chip.done .arrow{color:var(--ink-2);}
.stroke-chip.now{border-color:var(--accent);background:var(--accent-soft);color:var(--ink);font-weight:550;}
/* The spoken words of a stroke, for a screen reader only. */
.stroke-chip .say{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}

/* ── speak ─────────────────────────────────────────────────── */
.speak-tools{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:2px 0 0;}
.speak-tools .btn{min-height:48px;}
.speak-card{
  text-align:center;padding:22px 16px;border-radius:16px;
  background:var(--surface-2);border:1px solid var(--rule);
}
.speak-card .target{
  display:block;font-family:var(--han);font-size:clamp(34px,9vw,48px);line-height:1.2;
}
.speak-card .target.en{
  font-family:var(--font);font-size:clamp(22px,5vw,30px);font-weight:600;line-height:1.3;
}
.speak-card .pinyin{display:block;margin-top:6px;font-family:var(--mono);font-size:15px;color:var(--ink-2);}
.speak-card .meaning{display:block;margin-top:4px;font-size:15px;color:var(--ink-2);}
.speak-card .prompt{display:block;margin-top:10px;font-size:14px;color:var(--ink-2);}

.speak-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:16px 0 0;}
.speak-actions .btn{min-height:48px;}
.speak-actions .btn.record{background:var(--accent);border-color:var(--accent);color:var(--on-accent);}
.speak-actions .btn.recording{background:var(--alert);border-color:var(--alert);color:var(--on-accent);}

.transcript{
  min-height:24px;margin:14px 0 0;text-align:center;font-size:16px;line-height:1.5;
  color:var(--ink-2);
}
.transcript .heard{color:var(--ink);}
.transcript .ok{color:var(--growth);font-weight:550;}
.transcript .bad{color:var(--alert);font-weight:550;}

/* What the microphone is doing right now. The dot is the only thing that
   moves; the words carry the meaning, so it still works with motion off. */
.listen-live{
  display:flex;align-items:center;justify-content:center;gap:9px;
  margin:14px 0 0;padding:10px 14px;border-radius:10px;
  background:var(--surface-2);border:1px solid var(--rule);
  font-size:15px;line-height:1.45;color:var(--ink);text-align:center;
}
.listen-live[hidden]{display:none;}
.listen-live::before{
  content:"";flex:none;width:10px;height:10px;border-radius:50%;
  background:var(--alert);animation:pulse 1.1s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.35;transform:scale(.8);}
}

.speak-rounds{display:flex;gap:6px;justify-content:center;margin:0 0 14px;}
.speak-rounds button{
  min-height:44px;padding:0 14px;border-radius:999px;border:1px solid var(--rule-strong);
  background:var(--surface);color:var(--ink-2);font-family:inherit;font-size:14px;cursor:pointer;
}
.speak-rounds button:hover{color:var(--ink);border-color:var(--accent);}
.speak-rounds button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.speak-rounds button[aria-pressed="true"]{border-color:var(--accent);color:var(--ink);background:var(--accent-soft);}

/* ── end summary ───────────────────────────────────────────── */
.practice-summary{text-align:center;}
.practice-summary h2{margin:0;font-size:clamp(24px,5vw,32px);letter-spacing:-.02em;}
.practice-summary .stats{
  display:flex;flex-wrap:wrap;gap:22px;justify-content:center;margin:18px 0 0;
}
.practice-summary .stat{min-width:120px;}
.practice-summary .stat dt{
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);
}
.practice-summary .stat dd{margin:2px 0 0;font-family:var(--mono);font-size:22px;}
.practice-summary .actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px;}

@media (min-width:760px){
  .draw-layout{grid-template-columns:160px 320px;justify-content:center;}
  .model{display:block;}
}
@media (max-width:600px){
  .practice-main{padding-top:14px;}
  .practice-panel{padding:18px 14px;border-radius:16px;}
  .mode-btn{font-size:14px;padding:0 6px;}
  .mode-break{display:inline;}
}
@media (prefers-reduced-motion:reduce){
  .progress-fill{transition:none;}
  .listen-live::before{animation:none;}
}