:root {
  --bg: #f6f7f9;
  --panel: #fff;
  --ink: #14161a;
  --muted: #6b7280;
  --line: #dfe3e8;
  --accent: #1f6feb;
  --accent-ink: #fff;
  --rec: #d92d20;
  --ok: #15803d;
  --shadow: 0 1px 2px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.05);
  --han: "PingFang HK", "Noto Sans HK", "Microsoft JhengHei", "Hiragino Sans CJK TC", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --panel: #171a20; --ink: #e8eaed; --muted: #9aa3af;
    --line: #2a2f38; --accent: #4c8dff; --rec: #f0574d; --ok: #4ade80;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 4px 12px rgba(0,0,0,.3);
  }
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", var(--han);
  -webkit-font-smoothing: antialiased;
}
header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--line);
  background: var(--panel);
}
h1 { font-size: 16px; margin: 0; font-weight: 650; letter-spacing: .02em; }
.status { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.status.bad { color: var(--rec); }
.status.good { color: var(--ok); }

main { max-width: 900px; margin: 0 auto; padding: 20px; }
section { margin-bottom: 18px; }

/* ---- 砌緊嘅名 ---- */
.name-bar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; box-shadow: var(--shadow);
}
.slots { display: flex; gap: 10px; flex: 1; min-height: 68px; align-items: center; }
.slot {
  width: 64px; height: 68px; border: 2px dashed var(--line); border-radius: 10px;
  display: grid; place-items: center; font-family: var(--han);
  font-size: 40px; line-height: 1; color: var(--ink); background: transparent;
}
.slot.filled { border-style: solid; border-color: var(--line); background: var(--bg); }
.slot.active { border-color: var(--accent); border-style: solid; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.slot .kind { font-size: 11px; color: var(--muted); font-family: inherit; }
/* 空格入面顯示辨識到嘅音節，等你即刻知佢聽到幾多個音 */
.slot .syl-hint { font-size: 13px; color: var(--accent); font-family: inherit;
                  letter-spacing: .5px; }
.name-actions { display: flex; gap: 8px; }

/* ---- 姓名字數 ---- */
.name-length { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.name-length > span { color: var(--muted); font-size: 13px; }
.length-options { display: inline-flex; padding: 3px; gap: 3px; border-radius: 9px;
                  border: 1px solid var(--line); background: var(--panel); }
.length-options label { cursor: pointer; }
.length-options input { position: absolute; opacity: 0; pointer-events: none; }
.length-options span { display: block; padding: 5px 11px; border-radius: 6px;
                       color: var(--muted); font-size: 13px; }
.length-options input:checked + span { background: var(--accent); color: var(--accent-ink); }
.length-options input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- 掣 ---- */
.btn {
  font: inherit; padding: 9px 14px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .4; cursor: default; }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.btn-more { width: 100%; margin-top: 10px; color: var(--muted); }

/* ---- 輸入 ---- */
.input-bar { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.mic {
  display: inline-flex; align-items: center; gap: 10px;
  font: inherit; font-weight: 600; padding: 14px 26px; border-radius: 10px;
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink);
  cursor: pointer; user-select: none; -webkit-user-select: none; touch-action: none;
}
.mic:disabled { opacity: .45; cursor: default; }
.mic .mic-icon { font-size: 11px; opacity: .85; }
.mic.recording { background: var(--rec); border-color: var(--rec); }
.mic.recording .mic-icon { animation: pulse .9s ease-in-out infinite; }
.mic.busy { opacity: .7; }
@keyframes pulse { 50% { opacity: .25; } }
.wave {
  width: 130px; height: 44px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--panel);
  display: block; flex: none;
}
.wave.live { border-color: var(--rec); }
.or { color: var(--muted); font-size: 13px; }
.syl-form { display: flex; gap: 8px; }
.syl-form input {
  font: inherit; padding: 9px 12px; width: 190px;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--panel); color: var(--ink);
}
.syl-form input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.hint { color: var(--muted); font-size: 13px; margin: 10px 0 0; }
kbd {
  font: 12px ui-monospace, SFMono-Regular, Menlo, monospace;
  border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 4px; padding: 1px 5px; background: var(--panel);
}

/* ---- 候選字格 ---- */
.cand-head { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.cand-head b { color: var(--ink); font-weight: 600; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(58px, 1fr)); gap: 8px; }
.card {
  aspect-ratio: 1; border: 1px solid var(--line); border-radius: 9px;
  background: var(--panel); color: var(--ink); cursor: pointer;
  font-family: var(--han); font-size: 30px; line-height: 1;
  display: grid; place-items: center; padding: 0;
  transition: transform .06s, border-color .12s, background .12s;
}
.card:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--panel)); }
.card:active { transform: scale(.94); }
.card.surname { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- 最近 ---- */
.recent h2 { font-size: 13px; color: var(--muted); font-weight: 600; margin: 0 0 8px; }
#recent { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font: inherit; font-family: var(--han); font-size: 18px; cursor: pointer;
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
}
.chip:hover { border-color: var(--accent); }

footer {
  max-width: 900px; margin: 0 auto; padding: 20px;
  color: var(--muted); font-size: 12px; border-top: 1px solid var(--line);
}
footer a { color: var(--muted); }

/* ---- 提示 ---- */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 16px);
  background: var(--ink); color: var(--bg); padding: 10px 18px; border-radius: 8px;
  font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .18s, transform .18s;
  max-width: 80vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: var(--rec); color: #fff; }