/* palette: dataviz reference instance (light + selected dark steps) */
:root {
  color-scheme: light;
  --plane:        #f9f9f7;
  --surface:      #fcfcfb;
  --ink:          #0b0b0b;
  --ink-2:        #52514e;
  --muted:        #6b6a65;          /* 正文小字要过 4.5:1 */
  --grid:         #e1e0d9;
  --axis:         #c3c2b7;
  --border:       rgba(11,11,11,.10);
  --accent:       #1f6bc4;
  --accent-soft:  #cde2fb;
  --on-accent:    #fff;
  --good:         #0ca30c;
  --good-ink:     #006300;
  --warning:      #fab219;
  --critical:     #c42f2f;
  --series-2:     #eb6834;
  --critical-soft: #f6dcdc;
  --good-soft:    #d9efd9;
  --shadow:       0 1px 2px rgba(11,11,11,.05), 0 8px 24px rgba(11,11,11,.05);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --plane: #0d0d0d; --surface: #1a1a19; --ink: #fff; --ink-2: #c3c2b7;
    --muted: #898781; --grid: #2c2c2a; --axis: #383835;
    --border: rgba(255,255,255,.10);
    --accent: #5a9bea; --accent-soft: #184f95; --on-accent: #0d0d0d;
    --good: #0ca30c; --good-ink: #2cbf2c; --warning: #fab219; --critical: #f06464;
    --critical-soft: #4a2222; --good-soft: #1d3a1d;
    --series-2: #d95926;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --plane: #0d0d0d; --surface: #1a1a19; --ink: #fff; --ink-2: #c3c2b7;
  --muted: #898781; --grid: #2c2c2a; --axis: #383835;
  --border: rgba(255,255,255,.10);
  --accent: #5a9bea; --accent-soft: #184f95; --on-accent: #0d0d0d;
  --good: #0ca30c; --good-ink: #2cbf2c; --warning: #fab219; --critical: #f06464;
  --critical-soft: #4a2222; --good-soft: #1d3a1d;
  --series-2: #d95926;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--plane); color: var(--ink);
  font: 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
h3 { font-size: 15px; margin: 0 0 4px; letter-spacing: .01em; }
hr { border: 0; border-top: 1px solid var(--grid); margin: 14px 0; }
b { font-weight: 600; }

/* ── top bar ───────────────────────────────────────────── */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 10px max(16px, calc(50% - 560px));
  border-bottom: 1px solid var(--grid);
  background: var(--surface);
  position: sticky; top: 0; z-index: 20;
}
.brand { font-weight: 650; letter-spacing: .04em; white-space: nowrap; }
.tabs { display: flex; gap: 2px; margin-left: 8px; }
.tab {
  font: inherit; color: var(--ink-2); background: none; border: 0;
  padding: 6px 14px; border-radius: 7px; cursor: pointer; white-space: nowrap;
}
.tab:hover { background: var(--grid); }
.tab.is-on { background: var(--accent); color: var(--on-accent); }
.tab:focus-visible, .due-pill:focus-visible, .icon-btn:focus-visible {
  outline: 2px solid var(--ink); outline-offset: 2px;
}
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.due-pill {
  font: inherit; font-size: 12px; color: var(--ink-2); background: var(--grid);
  padding: 3px 10px; border-radius: 999px; white-space: nowrap; border: 0;
}
button.due-pill { cursor: pointer; }
button.due-pill:hover { filter: brightness(.96); }
.due-pill.hot { background: var(--accent-soft); color: var(--ink); }
/* color-mix 不支持的浏览器先拿纯色兜底 */
.store-warn { background: var(--critical-soft); background: color-mix(in srgb, var(--critical) 20%, var(--grid)); color: var(--ink); }
.sync-pill.on { background: var(--good-soft); background: color-mix(in srgb, var(--good) 18%, var(--grid)); color: var(--ink); }
.sync-pill.err { background: var(--critical-soft); background: color-mix(in srgb, var(--critical) 18%, var(--grid)); color: var(--ink); }

/* 同步卡片 */
.sync-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
.sync-key {
  font: 15px/1.5 var(--mono); letter-spacing: .14em; user-select: all;
  background: var(--plane); border: 1px solid var(--grid); border-radius: 9px;
  padding: 9px 13px; word-break: break-all; flex: 1; min-width: 240px;
}
.sync-key.masked { color: var(--muted); letter-spacing: .2em; }
.sync-input {
  font: 14px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase;
  padding: 9px 12px; border-radius: 9px; border: 1px solid var(--muted);
  background: var(--plane); color: var(--ink); flex: 1; min-width: 220px;
}
.sync-input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.sync-input::placeholder { font-family: var(--sans); letter-spacing: 0; text-transform: none; color: var(--muted); }
.field-err { color: var(--critical); font-size: 12.5px; margin: 6px 0 0; min-height: 1em; }
.field-err:empty { display: none; }
.err-text { color: var(--critical); }
.sync-help { margin-top: 12px; }
.warn-note {
  font-size: 12.5px; border-left: 3px solid var(--warning); padding: 4px 0 4px 10px;
  color: var(--ink-2); margin: 12px 0 0;
}

.icon-btn {
  font: inherit; background: none; border: 1px solid var(--border);
  color: var(--ink-2); width: 30px; height: 30px; border-radius: 8px; cursor: pointer; flex: none;
}
.icon-btn:hover { background: var(--grid); }

/* ── layout ────────────────────────────────────────────── */
main { padding: 22px max(16px, calc(50% - 560px)) 80px; }
.view { display: block; }
[hidden] { display: none !important; }
#view-drill { display: grid; grid-template-columns: minmax(0,1fr) 236px; gap: 16px; align-items: start; }
#view-drill[hidden] { display: none; }
/* 脚本还没跑完时按上次停留的页面显示（js/boot.js 设的），免得先闪一下辨音页 */
html[data-boot-view] #view-drill { display: none !important; }
html[data-boot-view="speed"] #view-speed, html[data-boot-view="stats"] #view-stats { display: block !important; }
html[data-boot-view] .tab[data-view="drill"] { background: none; color: var(--ink-2); }
html[data-boot-view="speed"] .tab[data-view="speed"],
html[data-boot-view="stats"] .tab[data-view="stats"] { background: var(--accent); color: var(--on-accent); }
.fatal {
  margin: 0; padding: 14px max(16px, calc(50% - 560px)); font: 14px/1.6 var(--sans);
  background: var(--critical-soft); color: var(--ink); border-bottom: 1px solid var(--critical);
}
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px; box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.card-actions { display: flex; gap: 12px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
p.small { margin: 2px 0 14px; }

/* ── drill ─────────────────────────────────────────────── */
.drill-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.drill-meta { display: flex; align-items: center; gap: 10px; font-size: 12.5px; }
.chip {
  font-size: 11.5px; padding: 2px 9px; border-radius: 999px;
  background: var(--grid); color: var(--ink-2);
}
.chip.review { background: var(--accent-soft); color: var(--ink); }
.drill-score { font-variant-numeric: tabular-nums; font-size: 13px; white-space: nowrap; }
.score-good { color: var(--good-ink); font-weight: 650; }
.score-bad { color: var(--critical); font-weight: 650; }

.word-stage { padding: 40px 8px 26px; text-align: center; }
.word {
  font-size: 68px; line-height: 1.15; font-weight: 500;
  letter-spacing: .1em; text-indent: .1em;
}
.word.flash-ok { animation: flashOk .24s ease-out; }
.word.flash-bad { animation: shake .3s ease-in-out; }
@keyframes flashOk { 0%, 60% { color: var(--good-ink); } 100% { color: var(--ink); } }
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-6px); } 75% { transform: translateX(6px); }
}
.word-sub { margin-top: 12px; min-height: 22px; font-size: 13px; color: var(--muted); }
.word-sub.warn { color: var(--critical); font-weight: 550; }
.hint-key { color: var(--ink-2); font-weight: 600; }

.answer-row { display: flex; gap: 10px; }
.answer {
  flex: 1; min-width: 0; font: 20px/1.4 var(--mono); letter-spacing: .06em;
  padding: 13px 16px; border-radius: 10px; color: var(--ink);
  border: 1px solid var(--muted); background: var(--plane);     /* 输入框边界要过 3:1 */
}
.answer::placeholder { font-family: var(--sans); font-size: 15px; letter-spacing: 0; color: var(--muted); }
.answer:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.answer.is-bad { border-color: var(--critical); outline-color: var(--critical); }
.btn {
  font: inherit; padding: 0 18px; min-height: 38px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
}
.btn.primary { background: var(--accent); border-color: transparent; color: var(--on-accent); font-weight: 550; }
.btn.danger { color: var(--critical); border-color: currentColor; background: transparent; }
.btn:hover { filter: brightness(1.06); }
.btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.btn:disabled { opacity: .6; cursor: default; }
.linkbtn {
  font: inherit; font-size: 12.5px; background: none; border: 0; padding: 0;
  color: var(--accent); cursor: pointer;
}
.linkbtn:hover { text-decoration: underline; }
.hint-right { display: flex; align-items: center; gap: 14px; }
.ime-pick { color: var(--muted); display: inline-flex; align-items: center; gap: 5px; }
.ime-pick select {
  font: inherit; font-size: 12.5px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--border); border-radius: 7px; padding: 2px 5px;
}

.hintbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; margin-top: 10px; font-size: 12.5px; flex-wrap: wrap;
}

/* ── feedback ──────────────────────────────────────────── */
.feedback { margin-top: 18px; border-top: 1px solid var(--grid); padding-top: 16px; transition: filter .2s, opacity .2s; }
.feedback.is-blurred { filter: blur(10px); opacity: .5; user-select: none; pointer-events: none; }
.verdict { display: flex; align-items: center; gap: 8px; font-weight: 600; margin-bottom: 14px; }
.verdict.bad { color: var(--critical); }
.verdict.ok { color: var(--good-ink); }
.verdict.neutral { color: var(--ink); }
.tiles.inline { margin-bottom: 12px; }
.syls { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.syl {
  border: 1px solid var(--grid); border-radius: 10px; padding: 10px 14px;
  min-width: 92px; text-align: center; background: var(--plane);
}
.syl.bad { border-color: var(--critical); background: var(--plane); background: color-mix(in srgb, var(--critical) 8%, var(--plane)); }
.syl .s-char { font-size: 30px; line-height: 1.2; }
.syl .s-right { font: 15px/1.5 var(--mono); color: var(--good-ink); font-weight: 600; letter-spacing: .04em; }
.syl .s-wrong { font: 13px/1.4 var(--mono); color: var(--critical); text-decoration: line-through; }
.syl .s-tag { font-size: 11px; color: var(--muted); margin-top: 2px; }
.mark { background: var(--critical-soft); background: color-mix(in srgb, var(--critical) 22%, transparent); border-radius: 3px; padding: 0 1px; }

.pairs { display: grid; gap: 12px; }
.pair {
  border: 1px solid var(--grid); border-radius: 12px; overflow: hidden; background: var(--plane);
}
.pair-head {
  display: flex; align-items: baseline; gap: 10px; padding: 9px 14px;
  border-bottom: 1px solid var(--grid); font-size: 12.5px; color: var(--ink-2);
}
.pair-head .lab { font-weight: 600; color: var(--ink); }
.pair-body { display: grid; grid-template-columns: 1fr 1fr; }
.pair-col { padding: 11px 14px; }
.pair-col + .pair-col { border-left: 1px solid var(--grid); }
.pair-syl { font: 14px/1.5 var(--mono); letter-spacing: .06em; font-weight: 600; }
.pair-col.right .pair-syl { color: var(--good-ink); }
.pair-col.wrong .pair-syl { color: var(--critical); }
.pair-note { font-size: 11.5px; color: var(--muted); margin-bottom: 5px; }
.fam { font-size: 21px; letter-spacing: .12em; line-height: 1.5; word-break: break-all; }
.fam .hit {
  background: var(--accent-soft); border-radius: 4px;
  box-shadow: 0 0 0 2px var(--accent-soft);
}
.retype-note { margin-top: 14px; font-size: 13px; color: var(--ink-2); }

/* ── sidecard ──────────────────────────────────────────── */
.sidecard { position: sticky; top: 74px; }
.statrow { display: flex; justify-content: space-between; font-size: 13px; padding: 3px 0; }
.statrow b { font-variant-numeric: tabular-nums; }
.switch { display: flex; align-items: center; gap: 8px; font-size: 13px; cursor: pointer; }

/* ── speed ─────────────────────────────────────────────── */
.speed-metrics { display: flex; gap: 18px; }
.speed-metrics span { display: flex; align-items: baseline; gap: 4px; white-space: nowrap; }
.speed-metrics b { font-size: 19px; font-variant-numeric: tabular-nums; }
.speed-metrics i { font-style: normal; font-size: 11.5px; color: var(--muted); }
.stream {
  margin: 26px 0 18px; font-size: 30px; line-height: 1.85; letter-spacing: .06em;
  word-break: break-all; min-height: 110px;
}
.stream .w { margin-right: .5em; white-space: nowrap; }
.stream .c { position: relative; }
.stream .c.done { color: var(--muted); }
.stream .c.err { color: var(--critical); text-decoration: underline wavy; }
.stream .c.cur { background: var(--accent-soft); border-radius: 4px; }
.stream .w.pending { color: var(--ink); }
.stream-input { width: 100%; font-size: 22px; font-family: var(--sans); letter-spacing: .04em; }

/* ── tiles ─────────────────────────────────────────────── */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 12px; margin-bottom: 16px; }
.tile {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px; box-shadow: var(--shadow);
}
.tile .v { font-size: 27px; font-weight: 600; line-height: 1.25; }
.tile .k { font-size: 12px; color: var(--muted); }
.tile .sub { font-size: 11.5px; color: var(--muted); margin-top: 3px; }

/* ── bar rows ──────────────────────────────────────────── */
ul.headline {
  margin: 10px 0 4px; padding: 10px 14px 10px 30px; list-style: disc;
  background: var(--plane); border: 1px solid var(--accent-soft);
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: 10px; font-size: 13px;
}
ul.headline li + li { margin-top: 4px; }

.group-title {
  font-size: 12px; color: var(--muted); text-transform: none;
  margin: 16px 0 8px; letter-spacing: .04em;
}
.barrow {
  display: grid; grid-template-columns: 76px 1fr 168px; gap: 12px;
  align-items: center; padding: 5px 0; font-size: 13px;
}
.barrow .lab {
  font: 13px/1.4 var(--mono); font-weight: 600; letter-spacing: .05em;
  display: flex; align-items: center; gap: 4px;
}
.barrow .track { background: var(--grid); height: 9px; border-radius: 4px; position: relative; }
.barrow .fill { background: var(--accent); height: 9px; border-radius: 4px; min-width: 2px; }
.barrow .fill.weak { background: var(--critical); }
.barrow .note { color: var(--ink-2); font-size: 12px; font-variant-numeric: tabular-nums; text-align: right; }
.barrow .note .dir { font-family: var(--mono); color: var(--critical); }
.barrow.empty .note, .barrow.empty .lab { color: var(--muted); }
.flag {
  font-size: 10.5px; color: var(--critical); font-family: var(--sans);
  font-weight: 500; letter-spacing: 0;
}

/* ── table ─────────────────────────────────────────────── */
.tbl-wrap { overflow-x: auto; }
table.tbl { border-collapse: collapse; width: 100%; font-size: 13px; }
table.tbl th, table.tbl td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--grid); white-space: nowrap; }
table.tbl th { font-weight: 550; color: var(--muted); font-size: 11.5px; }
table.tbl td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.tbl td.zi { font-size: 21px; }
table.tbl td.py { font-family: var(--mono); letter-spacing: .04em; }
.boxdots { display: inline-flex; gap: 2.5px; }
.boxdots i { width: 7px; height: 7px; border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--muted); display: block; }
.boxdots i.on { background: var(--good); box-shadow: none; }
table.tbl td.typed { color: var(--critical); }
.due-now { color: var(--critical); font-weight: 600; }

/* ── trend chart ───────────────────────────────────────── */
.chart { position: relative; margin: 6px 0 18px; }
.chart figcaption { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .dot { cursor: pointer; fill: var(--accent); stroke: var(--surface); stroke-width: 2; }
.chart .hit { fill: transparent; cursor: pointer; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .axis-label { font-size: 10px; fill: var(--muted); }
.chart .end-label { font-size: 11px; fill: var(--ink-2); }
.chart .series { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.tip {
  position: absolute; pointer-events: none; z-index: 5;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: var(--shadow); padding: 7px 10px; font-size: 12px; white-space: nowrap;
  transform: translate(-50%, -115%); opacity: 0; transition: opacity .1s;
}
.tip.on { opacity: 1; }
.tip b { font-variant-numeric: tabular-nums; }

.empty-note { color: var(--muted); font-size: 13px; padding: 10px 0; }

/* ── toast ─────────────────────────────────────────────── */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: var(--ink); color: var(--plane); padding: 9px 16px;
  border-radius: 9px; font-size: 13px; z-index: 50;
}

@media (max-width: 860px) {
  #view-drill { grid-template-columns: minmax(0,1fr); }
  .sidecard { position: static; }
  .word { font-size: 52px; }
  .pair-body { grid-template-columns: 1fr; }
  .pair-col + .pair-col { border-left: 0; border-top: 1px solid var(--grid); }
  .barrow { grid-template-columns: 76px 1fr; }
  .barrow .note { grid-column: 1 / -1; text-align: left; }
  .answer-row { flex-direction: column; }
  .btn { padding: 11px 18px; }
  .ime-pick select { font-size: 16px; }     /* 小于 16px 的输入控件一聚焦，iOS 会把整页放大 */
}

/* 手机：顶栏一行放不下品牌名，去掉它；元素都不许折行 */
@media (max-width: 560px) {
  .brand { display: none; }
  .topbar { gap: 8px; padding: 8px 12px; }
  .tabs { margin-left: 0; }
  .tab { padding: 6px 10px; }
  .topbar-right { gap: 6px; }
  main { padding-left: 12px; padding-right: 12px; }
  .speed-metrics { gap: 10px; }
  .speed-metrics b { font-size: 16px; }
  .drill-head { flex-wrap: wrap; }
  .narrow-hide { display: none; }           /* 错字本在窄屏上去掉「对」「进度」两列，免得要横着滑 */
  table.tbl th, table.tbl td { padding: 7px 6px; }
}

/* 速度模式结语里的打错字列表 */
.misses { list-style: none; padding: 0; margin: 0 0 12px; display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 15px; }
.misses .want { color: var(--good-ink); font-weight: 600; }
.misses .got { color: var(--critical); text-decoration: line-through; }