/* 實證評讀練習室 — 期刊紙面 + 螢光筆證據 + 指導者紅筆 */

:root {
  --paper: #fbfcfd;
  --surface: #ffffff;
  --sunken: #f1f4f7;
  --ink: #1e2a3a;
  --ink-2: #4a5668;
  --ink-3: #6b7685;
  --line: #d9e0e8;
  --primary: #1f4e79;
  --primary-ink: #ffffff;
  --primary-soft: #e3edf7;
  --highlight: #ffe45c;
  --redpen: #b3261e;
  --redpen-soft: #fbe9e7;
  --yes: #0072b2;
  --no: #c4510a;
  --ct: #b77900;
  --focus: #1f4e79;
  --font-ui: "Noto Sans TC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-paper: "Noto Serif TC", "Songti TC", Georgia, serif;
  --radius-control: 6px;
  --radius-card: 10px;
  --header-h: 48px;
  /* 上方兩層色塊：標題列（深藍）＋設定列（淡藍） */
  --bar-bg: #1f4e79;
  --bar-ink: #ffffff;
  --bar-ink-2: #d3deea;
  --bar-control: rgba(255, 255, 255, 0.14);
  --bar-line: rgba(255, 255, 255, 0.6);
  --band-bg: #e3edf7;
  --band-line: #c5d5e6;
  --band-control-line: #7f95ad;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #12171e;
    --surface: #1a212b;
    --sunken: #151b23;
    --ink: #e6eaf0;
    --ink-2: #b2bccb;
    --ink-3: #8e99a8;
    --line: #2d3845;
    --primary: #8cbbe8;
    --primary-ink: #0d1b2a;
    --primary-soft: #1d2d40;
    --highlight: rgba(255, 228, 92, 0.32);
    --redpen: #ff8a80;
    --redpen-soft: #3a1f1d;
    --yes: #56b4e9;
    --no: #f0895a;
    --ct: #f0c24a;
    --focus: #8cbbe8;
    --bar-bg: #0f2a45;
    --bar-ink: #e6eaf0;
    --bar-ink-2: #b6c6d8;
    --bar-control: rgba(255, 255, 255, 0.1);
    --bar-line: rgba(255, 255, 255, 0.5);
    --band-bg: #1a2a3c;
    --band-line: #2b3e54;
    --band-control-line: #5d7591;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --paper: #12171e;
  --surface: #1a212b;
  --sunken: #151b23;
  --ink: #e6eaf0;
  --ink-2: #b2bccb;
  --ink-3: #8e99a8;
  --line: #2d3845;
  --primary: #8cbbe8;
  --primary-ink: #0d1b2a;
  --primary-soft: #1d2d40;
  --highlight: rgba(255, 228, 92, 0.32);
  --redpen: #ff8a80;
  --redpen-soft: #3a1f1d;
  --yes: #56b4e9;
  --no: #f0895a;
  --ct: #f0c24a;
  --focus: #8cbbe8;
  --bar-bg: #0f2a45;
  --bar-ink: #e6eaf0;
  --bar-ink-2: #b6c6d8;
  --bar-control: rgba(255, 255, 255, 0.1);
  --bar-line: rgba(255, 255, 255, 0.5);
  --band-bg: #1a2a3c;
  --band-line: #2b3e54;
  --band-control-line: #5d7591;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.65 var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

button, input, select, textarea { font: inherit; color: inherit; }

:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---------- masthead ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--header-h);
  padding: 0 20px;
  background: var(--bar-bg);
  color: var(--bar-ink);
}
.masthead :focus-visible { outline-color: var(--bar-ink); }

.masthead__brand { display: flex; align-items: baseline; gap: 12px; min-width: 0; flex: 1; }
.masthead__title { font-weight: 700; font-size: 17px; white-space: nowrap; }
.masthead__tool { color: var(--bar-ink-2); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.masthead__modes { display: flex; gap: 4px; background: var(--bar-control); padding: 3px; border-radius: 8px; }

.mode-tab {
  border: 0;
  background: transparent;
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  color: var(--bar-ink);
  font-size: 14px;
}
.mode-tab:hover { background: var(--bar-control); }
.mode-tab[aria-pressed="true"] { background: var(--bar-ink); color: var(--bar-bg); font-weight: 700; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--surface);
  cursor: pointer;
}

.icon-btn .icon-btn__exit { display: none; }
.icon-btn[aria-pressed="true"] .icon-btn__enter { display: none; }
.icon-btn[aria-pressed="true"] .icon-btn__exit { display: block; }
.masthead .icon-btn + .icon-btn { margin-left: -8px; }
.masthead .icon-btn { background: transparent; border-color: var(--bar-line); color: var(--bar-ink); }
.masthead .icon-btn:hover { background: var(--bar-control); }

/* ---------- banners ---------- */

.banners:empty { display: none; }
.banners { display: grid; gap: 8px; padding: 12px 20px 0; }

.banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 10px 14px;
  border-left: 4px solid var(--ct);
  background: var(--surface);
  border-radius: 0 var(--radius-control) var(--radius-control) 0;
  font-size: 14px;
}
.banner--error { border-left-color: var(--redpen); }
.banner--info { border-left-color: var(--primary); }
.banner__text { flex: 1 1 260px; }
.banner ul { margin: 4px 0 0; padding-left: 18px; }

/* ---------- controls ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--surface);
  cursor: pointer;
  white-space: nowrap;
  font-size: 14px;
}
.btn:hover { border-color: var(--ink-3); }
.btn--primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); font-weight: 500; }
.btn--primary:hover { filter: brightness(1.08); border-color: var(--primary); }
.btn--quiet { border-color: transparent; background: transparent; color: var(--ink-2); }
.btn--quiet:hover { background: var(--sunken); border-color: transparent; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
/* 上傳 PDF：評讀自己文獻的入口，比一般按鈕醒目、但不搶「匯出作答檔」的實心主色 */
.btn--upload { border: 2px solid var(--primary); background: var(--surface); color: var(--primary); font-weight: 700; }
.btn--upload:hover { background: var(--primary-soft); border-color: var(--primary); }

.field { display: grid; gap: 2px; min-width: 0; }
.field__label { font-size: 12px; color: var(--ink-3); }
.field select, .field input {
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--surface);
  max-width: 100%;
}
.field select { min-width: 220px; }
.field--short input { width: 150px; }

textarea {
  width: 100%;
  min-height: 84px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--surface);
  resize: vertical;
  line-height: 1.6;
}

/* ---------- setup bar ---------- */

.setup {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 6px 14px;
  padding: 7px 16px;
  background: var(--band-bg);
  border-bottom: 1px solid var(--band-line);
}
.setup .field__label, .setup .progress { color: var(--ink-2); }
.setup .field select, .setup .field input, .setup .btn:not(.btn--primary):not(.btn--quiet):not(.btn--upload) { border-color: var(--band-control-line); }
.setup .btn--quiet:hover { background: var(--surface); }
.setup__group { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; min-width: 0; }
/* 設定列：欄位名稱放在控制項左側，整列只占一行高度 */
.setup .field { display: flex; align-items: center; gap: 6px; }
.setup .field__label { white-space: nowrap; }
.setup .field select, .setup .field input, .setup .btn { min-height: 32px; }
.setup .field select { min-width: 0; max-width: 210px; }
.setup .btn { padding: 0 12px; }
.setup #paper-select { width: clamp(180px, 22vw, 420px); }
.setup .field--short input { width: 120px; }
.setup .field input[type="date"] { width: 138px; }
.progress { font-size: 14px; color: var(--ink-2); padding: 0 4px; min-height: 32px; display: inline-flex; align-items: center; white-space: nowrap; }
.progress strong { color: var(--ink); font-variant-numeric: tabular-nums; }

/* ---------- workspace ---------- */

.pane-tabs { display: none; }

.learner { display: flex; flex-direction: column; height: calc(100vh - var(--header-h)); min-height: 600px; }

.workspace {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 9px var(--appraise-w, 460px);
}
.workspace.is-resizing { cursor: col-resize; user-select: none; }

.paper-pane, .appraise-pane { position: relative; overflow-y: auto; min-width: 0; }
.appraise-pane { display: flex; flex-direction: column; overflow-x: hidden; overflow-wrap: anywhere; background: var(--surface); }

.splitter {
  position: relative;
  cursor: col-resize;
  background: var(--sunken);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  touch-action: none;
}
.splitter::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 2px;
  width: 3px;
  height: 36px;
  margin-top: -18px;
  border-radius: 2px;
  background: var(--ink-3);
  opacity: 0.5;
}
.splitter:hover, .splitter:focus-visible, .workspace.is-resizing .splitter { background: var(--primary-soft); }

/* ---------- paper (journal page) ---------- */

.paper { max-width: 72ch; margin: 0 auto; padding: 32px 40px 80px; font-family: var(--font-paper); }

.paper__fiction {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--redpen);
  border: 1px dashed var(--redpen);
  border-radius: var(--radius-control);
  padding: 6px 10px;
  margin-bottom: 20px;
}

.paper__title { font-size: 24px; line-height: 1.4; font-weight: 600; margin: 0 0 6px; }
.paper__title-en { font-size: 15px; line-height: 1.5; color: var(--ink-2); margin: 0 0 10px; font-style: italic; }
.paper__byline { font-family: var(--font-ui); font-size: 13px; color: var(--ink-3); margin: 0 0 28px; }

.paper__lang { display: inline-flex; gap: 4px; font-family: var(--font-ui); margin-bottom: 24px; }
.paper__lang button { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 2px 12px; font-size: 13px; cursor: pointer; }
.paper__lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.paper h2 { font-size: 15px; font-family: var(--font-ui); font-weight: 700; color: var(--primary); margin: 32px 0 10px; letter-spacing: 0.02em; }
.paper p { margin: 0 0 14px; font-size: 16px; line-height: 1.9; }
.paper p.is-en { font-size: 15.5px; line-height: 1.75; hyphens: auto; }

/* 螢光筆：唯一的記憶點 */
.mark {
  background-image: linear-gradient(transparent 58%, var(--highlight) 58%, var(--highlight) 92%, transparent 92%);
  background-repeat: no-repeat;
  background-size: 0% 100%;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  transition: background-size 700ms cubic-bezier(0.25, 0.8, 0.3, 1);
}
.is-evidence .mark { background-size: 100% 100%; }

@media (prefers-reduced-motion: reduce) {
  .mark { transition: none; }
}

/* ---------- PDF ---------- */

.pdf-toolbar {
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 6px;
  padding: 8px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.pdf-toolbar .btn { min-width: 36px; font-size: 16px; }
.pdf-toolbar__zoom { min-width: 48px; text-align: center; font-variant-numeric: tabular-nums; font-size: 14px; }
.pdf-toolbar__hits { margin-left: auto; font-size: 13px; color: var(--ink-2); }
.pdf { padding: 20px; display: grid; gap: 12px; justify-items: center; overflow-x: auto; }
.pdf__page { position: relative; background: #fff; box-shadow: 0 0 0 1px var(--line); }
.pdf__page canvas { display: block; }
.pdf__page-label { font-size: 12px; color: var(--ink-3); justify-self: start; }

/* pdf.js 3.x 文字層：文字透明疊在 canvas 上，供選取與關鍵字高亮 */
.textLayer { position: absolute; inset: 0; overflow: hidden; line-height: 1; text-size-adjust: none; forced-color-adjust: none; transform-origin: 0 0; z-index: 2; }
.textLayer span, .textLayer br { color: transparent; position: absolute; white-space: pre; cursor: text; transform-origin: 0% 0%; }
.textLayer ::selection { background: rgba(31, 78, 121, 0.25); }
.textLayer .kw-hit { background: rgba(255, 228, 92, 0.6); border-radius: 2px; mix-blend-mode: multiply; }

.dropzone {
  margin: 40px auto;
  max-width: 520px;
  padding: 40px 24px;
  border: 2px dashed var(--line);
  border-radius: var(--radius-card);
  text-align: center;
  color: var(--ink-2);
}
.dropzone.is-over { border-color: var(--primary); background: var(--primary-soft); }

/* ---------- appraisal pane ---------- */

.item-nav { background: var(--surface); padding: 8px 20px; border-bottom: 1px solid var(--line); display: grid; gap: 6px; }
/* 視窗夠高才把題目導覽固定在上緣；矮螢幕讓它隨內容捲走，留空間給題目，翻頁鈕仍固定在下緣 */
@media screen and (min-height: 760px) {
  .item-nav { position: sticky; top: 0; z-index: 3; }
}
.item-nav__section { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.item-nav__flow { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; }
.item-nav__group { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; }
.item-nav__label { font-size: 12px; color: var(--ink-3); font-weight: 700; padding-right: 1px; }

.chip {
  position: relative;
  min-width: 34px;
  height: 28px;
  padding: 0 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
}
.chip[data-answer="Y"] { border-color: var(--yes); color: var(--yes); font-weight: 700; }
.chip[data-answer="N"] { border-color: var(--no); color: var(--no); font-weight: 700; }
.chip[data-answer="CT"] { border-color: var(--ct); color: var(--ct); font-weight: 700; }
.chip[data-answer="not-applicable"] { border-style: dashed; color: var(--ink-3); }
.chip[aria-current="step"] { box-shadow: 0 0 0 2px var(--ink); }
.chip[data-match="different"]::after {
  content: "";
  position: absolute;
  inset: -5px;
  border: 2px solid var(--redpen);
  border-radius: 50% 45% 55% 48%;
  transform: rotate(-6deg);
  pointer-events: none;
}

.question { padding: 20px; display: grid; gap: 16px; flex: 1; }
.question__section { font-size: 13px; color: var(--ink-3); }
.question__parent { font-size: 14px; color: var(--ink-2); padding-left: 10px; border-left: 3px solid var(--line); }
.question__title { font-size: 20px; line-height: 1.5; font-weight: 700; margin: 0; }
.question__title-en { font-size: 14px; color: var(--ink-2); margin: 4px 0 0; }

.answers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.answer {
  display: grid;
  gap: 0;
  padding: 10px 8px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--surface);
  cursor: pointer;
  text-align: center;
}
.answer__zh { font-weight: 700; font-size: 16px; }
.answer__en { font-size: 12px; color: var(--ink-3); }
.answer[data-value="Y"][aria-pressed="true"] { border-color: var(--yes); background: color-mix(in srgb, var(--yes) 12%, var(--surface)); color: var(--yes); }
.answer[data-value="N"][aria-pressed="true"] { border-color: var(--no); background: color-mix(in srgb, var(--no) 12%, var(--surface)); color: var(--no); }
.answer[data-value="CT"][aria-pressed="true"] { border-color: var(--ct); background: color-mix(in srgb, var(--ct) 14%, var(--surface)); color: var(--ct); }
.answer[aria-pressed="true"] .answer__en { color: inherit; }
.answers__clear { justify-self: start; font-size: 13px; }

.skip-note { padding: 12px 14px; background: var(--sunken); border-radius: var(--radius-control); font-size: 14px; color: var(--ink-2); }

.block-title { font-size: 13px; font-weight: 700; color: var(--ink-2); margin: 0 0 6px; }

.consider { display: grid; gap: 2px; }
.consider__intro { font-size: 14px; color: var(--ink-2); margin: 0 0 6px; }
.consider label { display: grid; grid-template-columns: 20px 1fr; gap: 8px; padding: 6px 4px; border-radius: 4px; cursor: pointer; font-size: 14px; }
.consider label:hover { background: var(--sunken); }
.consider input { margin-top: 4px; accent-color: var(--primary); }
.consider__en { display: block; font-size: 12.5px; color: var(--ink-3); }
.consider input:checked + span { color: var(--ink-3); }

details.aside { border-top: 1px solid var(--line); padding-top: 10px; }
details.aside summary { cursor: pointer; font-size: 13px; font-weight: 700; color: var(--ink-2); }
details.aside p { font-size: 14px; color: var(--ink-2); margin: 8px 0 0; }
.aside--teaching summary::before { content: "✎ "; color: var(--primary); }

.candidates { display: grid; gap: 6px; }
.candidate {
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--sunken);
  padding: 8px 10px;
  font-size: 13px;
  cursor: pointer;
}
.candidate__page { color: var(--ink-3); font-size: 12px; display: block; }
mark.kw {
  color: inherit;
  background-image: linear-gradient(transparent 50%, var(--highlight) 50%, var(--highlight) 95%, transparent 95%);
  background-color: transparent;
  padding: 0 1px;
}
.candidates__note { font-size: 12px; color: var(--ink-3); margin: 0; }

.pager { position: sticky; bottom: 0; z-index: 3; background: var(--surface); display: flex; justify-content: space-between; gap: 8px; padding: 10px 20px; border-top: 1px solid var(--line); }
.finish { flex: 1; }

/* ---------- RoB 2 ---------- */

.sq { display: grid; gap: 8px; padding: 12px 0; border-top: 1px solid var(--line); }
.sq__text { font-size: 15px; line-height: 1.55; }
.sq__id { display: inline-block; min-width: 2.6em; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--primary); }
.sq--skipped .sq__text { color: var(--ink-3); }
.sq__na { margin: 0; font-size: 13px; color: var(--ink-3); padding: 6px 10px; background: var(--sunken); border-radius: var(--radius-control); border: 1px dashed var(--line); }
.sq__pending { margin: 0; font-size: 12.5px; color: var(--ink-3); }
.sq-part { font-size: 13px; color: var(--ink-2); margin: 8px 0 0; }
.sq__options { display: flex; flex-wrap: wrap; gap: 6px; }
.opt {
  min-width: 44px;
  height: 34px;
  padding: 0 10px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--surface);
  font-weight: 700;
  cursor: pointer;
}
.opt[aria-pressed="true"] { border-color: var(--primary); background: var(--primary); color: var(--primary-ink); }

.answers--judgement .answer { padding: 10px 6px; }
.answer[data-judgement="Low"][aria-pressed="true"] { border-color: var(--yes); background: color-mix(in srgb, var(--yes) 12%, var(--surface)); color: var(--yes); }
.answer[data-judgement="Some concerns"][aria-pressed="true"] { border-color: var(--ct); background: color-mix(in srgb, var(--ct) 14%, var(--surface)); color: var(--ct); }
.answer[data-judgement="High"][aria-pressed="true"] { border-color: var(--no); background: color-mix(in srgb, var(--no) 12%, var(--surface)); color: var(--no); }
.chip[data-judgement="Low"] { border-color: var(--yes); color: var(--yes); font-weight: 700; }
.chip[data-judgement="Some concerns"] { border-color: var(--ct); color: var(--ct); font-weight: 700; }
.chip[data-judgement="High"] { border-color: var(--no); color: var(--no); font-weight: 700; }
.chip--step { min-width: 48px; }
td[data-judgement="Low"] { color: var(--yes); font-weight: 700; }
td[data-judgement="Some concerns"] { color: var(--ct); font-weight: 700; }
td[data-judgement="High"] { color: var(--no); font-weight: 700; }

.algo { display: grid; gap: 4px; padding: 10px 12px; border: 1.5px solid var(--line); border-radius: var(--radius-card); background: var(--sunken); font-size: 14px; }
.algo--differs { border-color: var(--ct); background: color-mix(in srgb, var(--ct) 8%, var(--surface)); }
.algo__head { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: baseline; font-weight: 700; }
.algo__flag { color: var(--ct); font-size: 13px; }
.algo__ok { color: var(--yes); font-size: 13px; font-weight: 500; }
.algo__path { margin: 0; font-family: var(--font-ui); font-variant-numeric: tabular-nums; color: var(--ink-2); }
.algo__locator { margin: 0; font-size: 12.5px; color: var(--ink-3); }

.text-input { min-height: 36px; padding: 0 10px; border: 1px solid var(--line); border-radius: var(--radius-control); background: var(--surface); width: 100%; }
.report-judgement td { background: var(--sunken); }

/* ---------- GRADE ---------- */

.answers--judgement:has(> :nth-child(2):last-child) { grid-template-columns: repeat(2, 1fr); }
.answers--certainty { grid-template-columns: repeat(4, 1fr); }
.answer--design[aria-pressed="true"] { border-color: var(--primary); background: var(--primary); color: var(--primary-ink); }
.answer[data-certainty="High"][aria-pressed="true"] { border-color: var(--yes); background: color-mix(in srgb, var(--yes) 12%, var(--surface)); color: var(--yes); }
.answer[data-certainty="Moderate"][aria-pressed="true"] { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 12%, var(--surface)); color: var(--primary); }
.answer[data-certainty="Low"][aria-pressed="true"] { border-color: var(--ct); background: color-mix(in srgb, var(--ct) 14%, var(--surface)); color: var(--ct); }
.answer[data-certainty="Very low"][aria-pressed="true"] { border-color: var(--no); background: color-mix(in srgb, var(--no) 12%, var(--surface)); color: var(--no); }
.chip[data-certainty="High"] { border-color: var(--yes); color: var(--yes); font-weight: 700; }
.chip[data-certainty="Moderate"] { border-color: var(--primary); color: var(--primary); font-weight: 700; }
.chip[data-certainty="Low"] { border-color: var(--ct); color: var(--ct); font-weight: 700; }
.chip[data-certainty="Very low"] { border-color: var(--no); color: var(--no); font-weight: 700; }

.factor { display: grid; gap: 8px; padding: 14px 0; border-top: 1px solid var(--line); }
.factor__head { display: flex; flex-wrap: wrap; gap: 2px 10px; align-items: baseline; }
.factor__name { font-size: 15px; font-weight: 700; line-height: 1.5; }
.factor__locator { font-size: 12px; color: var(--ink-3); }
.factor--off .factor__name { color: var(--ink-3); }
.factor__note { margin: 0; font-size: 13px; line-height: 1.6; color: var(--ink-2); padding: 8px 10px; border-left: 3px solid var(--ct); background: var(--sunken); border-radius: 0 var(--radius-control) var(--radius-control) 0; }
.factor__gate { display: grid; gap: 6px; padding: 12px 14px; background: var(--sunken); border-radius: var(--radius-control); font-size: 14px; color: var(--ink-2); }
.factor__gate p { margin: 0; }
.quote { font-style: italic; color: var(--ink-2); }
.levels { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 8px 0 0; font-size: 13.5px; }
.levels dt { font-weight: 700; }
.levels dd { margin: 0; color: var(--ink-2); }

@media screen and (max-width: 520px) {
  .answers--certainty { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- reference (red pen) ---------- */

.redpen {
  border: 1.5px solid var(--redpen);
  border-radius: var(--radius-card);
  padding: 12px 14px;
  background: var(--redpen-soft);
  display: grid;
  gap: 6px;
  font-size: 14px;
}
.redpen--same { border-color: var(--line); background: var(--sunken); }
.redpen__head { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: baseline; font-weight: 700; }
.redpen__verdict { color: var(--redpen); }
.redpen--same .redpen__verdict { color: var(--yes); }
.redpen__sources { font-size: 12.5px; color: var(--ink-3); margin: 0; padding-left: 18px; }
.draft-tag { font-size: 12px; font-weight: 500; color: var(--ct); border: 1px solid currentColor; border-radius: 4px; padding: 0 6px; }

.finish { padding: 20px; display: grid; gap: 16px; }
.finish__status { font-size: 15px; }

/* ---------- instructor ---------- */

.instructor { max-width: 1100px; margin: 0 auto; padding: 24px 20px 64px; display: grid; gap: 20px; }
.instructor h1 { font-size: 22px; margin: 0; }
.instructor__lead { color: var(--ink-2); margin: 0; }

.review-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.review-table th, .review-table td { text-align: left; vertical-align: top; padding: 10px 8px; border-bottom: 1px solid var(--line); }
.review-table th { font-size: 12px; color: var(--ink-3); font-weight: 500; }
.review-table td.num { white-space: nowrap; font-variant-numeric: tabular-nums; }
.review-table tr[data-match="different"] td { background: var(--redpen-soft); }
.review-table tr[data-match="different"] td.student { color: var(--redpen); font-weight: 700; text-decoration: underline wavy var(--redpen); text-underline-offset: 4px; }
.review-table .muted { color: var(--ink-3); font-size: 13px; }
.table-wrap { overflow-x: auto; }

.tally { display: flex; flex-wrap: wrap; gap: 20px; font-size: 15px; }
.tally strong { font-size: 22px; font-variant-numeric: tabular-nums; }

/* ---------- report ---------- */

.report-dialog { width: min(900px, 100vw - 32px); max-height: calc(100vh - 32px); padding: 0; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--surface); color: var(--ink); }
.report-dialog::backdrop { background: rgba(10, 16, 24, 0.5); }
.report-dialog__bar { position: sticky; top: 0; display: flex; justify-content: flex-end; gap: 8px; padding: 12px 16px; background: var(--surface); border-bottom: 1px solid var(--line); }
.report { padding: 24px 28px 40px; overflow-wrap: anywhere; }
.report h1 { font-size: 20px; margin: 0 0 4px; }
.report h2 { font-size: 15px; color: var(--primary); margin: 24px 0 8px; }
.report dl { display: grid; grid-template-columns: fit-content(40%) minmax(0, 1fr); gap: 4px 16px; margin: 12px 0; font-size: 14px; }
.report dt { color: var(--ink-3); }
.report dd { margin: 0; }
.report .note { white-space: pre-wrap; color: var(--ink-2); font-size: 13px; }
.report .summary-text { white-space: pre-wrap; }

.colophon { padding: 16px 20px 24px; font-size: 12px; color: var(--ink-3); border-top: 1px solid var(--line); }
.colophon a { color: inherit; }

/* ---------- responsive ---------- */

@media screen and (max-width: 900px) {
  .masthead { padding: 0 16px; gap: 10px; }
  .masthead__tool { display: none; }
  .masthead__title { font-size: 15px; overflow: hidden; text-overflow: ellipsis; }
  .mode-tab { padding: 5px 10px; font-size: 13px; }
  .mode-tab__long { display: none; }
  .setup { padding: 8px 16px; }
  .field select { min-width: 0; width: 100%; }
  .setup .field select, .setup #paper-select { min-width: 0; max-width: none; width: auto; flex: 1; }
  .setup__group, .field { width: 100%; }
  .setup .field--short { width: calc(50% - 5px); }
  .setup .field--short input, .setup .field input[type="date"] { width: auto; flex: 1; min-width: 0; }
  .setup .field:has(#paper-select) { width: auto; flex: 1 1 0; }
  .setup .btn { padding: 0 10px; font-size: 13px; }
  .setup .progress { font-size: 13px; padding: 0; }
  .pane-tabs { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); }
  .pane-tab { border: 0; background: transparent; padding: 10px; cursor: pointer; color: var(--ink-2); border-bottom: 2px solid transparent; }
  .pane-tab[aria-selected="true"] { color: var(--ink); font-weight: 700; border-bottom-color: var(--primary); }
  .learner { display: block; height: auto; min-height: 0; }
  .workspace { display: block; }
  .splitter { display: none; }
  .item-nav, .pager { position: static; }
  .appraise-pane { border-left: 0; }
  .workspace[data-pane="paper"] .appraise-pane, .workspace[data-pane="appraise"] .paper-pane { display: none; }
  .paper { padding: 20px 16px 48px; }
  .paper__title { font-size: 20px; }
  .question, .item-nav, .finish { padding-left: 16px; padding-right: 16px; }
  .banners { padding: 12px 16px 0; }
  .instructor { padding: 20px 16px 48px; }
  .review-table thead { display: none; }
  .review-table, .review-table tbody, .review-table tr, .review-table td { display: block; width: 100%; }
  .review-table tr { border-bottom: 1px solid var(--line); padding: 8px 0; }
  .review-table td { border: 0; padding: 4px 0; }
  .report { padding: 16px; }
}

/* ---------- print ---------- */

.print-root, .print-only { display: none; }

@media print {
  @page { size: A4; margin: 14mm 10mm; }
  html, body { background: #fff; color: #000; }
  body > * { display: none !important; }
  /* @page 邊界在列印對話框選「邊界：無」時會被覆蓋，因此左右另以內距保底；上下以 clone 讓每頁片段都留白 */
  body > .print-root { display: block !important; padding: 6mm 10mm; overflow: visible; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
  .print-root .table-wrap { overflow: visible; }
  .print-root table { width: 100%; border-collapse: collapse; table-layout: fixed; }
  .print-root .report-table__num { width: 8%; }
  .print-root .report-table__question { width: 44%; }
  .print-root .report-table__answer { width: 14%; }
  .print-root .report-table__note { width: 34%; }
  .print-root td { overflow-wrap: anywhere; }
  .print-root thead { display: table-header-group; }
  .print-root tr.print-only { display: table-row; }
  .print-root tr { break-inside: avoid; page-break-inside: avoid; }
  .print-root th { color: #000; border-bottom: 1.5px solid #000; }
  .print-root .print-caption { font-size: 11px; font-weight: 400; color: #444; border-bottom: 0; padding-bottom: 2px; }
  .print-root .muted, .print-root .note { color: #333; }
  .print-root .report-judgement td { background: #f2f2f2; border-top: 1px solid #999; }
}