/* ============================================================
   澳門公職綜合能力評估 430／360 趣味練習 — 樣式表
   純 CSS：無 @import、無外部 URL、無圖片檔（圖示用 emoji／CSS 繪製）
   深色優先，body.light 切換淺色。
   ============================================================ */

/* ---------- 1. 顏色與尺度變數（深色優先） ---------- */
:root {
  --bg:        #0b1220;
  --bg-soft:   #111b2e;
  --card:      #16223a;
  --card-2:    #1e2c49;
  --line:      #2b3b60;
  --text:      #eaf0ff;
  --muted:     #9fb0d0;
  --accent:    #ffc857;
  --accent-2:  #4cc9f0;
  --ok:        #38d39f;
  --bad:       #ff6b6b;
  --warn:      #ffb020;

  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 10px 30px rgba(0, 0, 0, .38);
}

/* 淺色主題：JS 只需要 body.classList.toggle('light') */
body.light {
  --bg:       #f4f6fb;
  --bg-soft:  #ffffff;
  --card:     #ffffff;
  --card-2:   #eef2fa;
  --line:     #d3dcec;
  --text:     #16223a;
  --muted:    #5d6b86;
  --accent:   #b9760a;
  --accent-2: #0e6c9c;
  --ok:       #0f8f63;
  --bad:      #c62828;
  --warn:     #b25f00;
  --shadow:   0 8px 24px rgba(22, 34, 58, .14);
}

/* ---------- 2. 基礎 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 12% -10%, rgba(76, 201, 240, .12), transparent 60%),
    radial-gradient(900px 520px at 92% 0%, rgba(255, 200, 87, .10), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

body.no-scroll { overflow: hidden; }

h1, h2, h3, h4 { margin: 0; line-height: 1.3; font-weight: 700; }
h1 { font-size: clamp(1.35rem, 1.1rem + 1.4vw, 2rem); }
h2 { font-size: clamp(1.15rem, 1rem + .8vw, 1.5rem); }
h3 { font-size: 1.05rem; }
p  { margin: 0 0 .6em; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0 0 .6em; padding-left: 1.3em; }
li { margin-bottom: .25em; }
strong { color: var(--text); }
mark {
  background: color-mix(in srgb, var(--accent) 30%, transparent);
  color: var(--text);
  border-radius: 4px;
  padding: 0 .18em;
}

.muted    { color: var(--muted); }
.small    { font-size: .82rem; }
.num      { text-align: right; }
.placeholder { color: var(--muted); font-style: italic; }

/* 讓對話框與 canvas 以外的內容有共同節奏 */
:where(section, header, footer, .view) { }

/* ---------- 3. 無障礙：跳至主內容與焦點框 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: .5em .9em;
  border-radius: var(--radius);
  background: var(--accent);
  color: #1a1200;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform .18s ease;
}
.skip-link:focus { transform: translateY(0); }

:focus-visible {
  outline: 3px solid var(--accent-2);
  outline-offset: 2px;
  border-radius: 6px;
}
.exam-card:focus-visible,
.mode-card:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ---------- 4. 應用外殼與頂部列 ---------- */
#app-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px clamp(12px, 2.5vw, 28px) 48px;
}

#topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 14px;
  margin-bottom: 10px;
  background: color-mix(in srgb, var(--bg-soft) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}

.brand { display: flex; align-items: center; gap: 8px; min-width: 0; }
.brand-mark { font-size: 1.15rem; }
.brand-text {
  font-weight: 700;
  font-size: .95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 42vw;
}

/* 經驗值條 */
.xp-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 22px;
  margin-bottom: 20px;
  padding: 0 8px;
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04);
}
.xp-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--xp, 0%);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  transition: width .35s ease;
}
.xp-text {
  position: relative;
  font-size: .74rem;
  font-weight: 700;
  color: var(--text);
  text-shadow: 0 1px 2px rgba(0, 0, 0, .35);
  font-variant-numeric: tabular-nums;
}

/* ---------- 5. 檢視容器 ---------- */
.view {
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn .22s ease both;
}
.view[hidden] { display: none; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
.fade-in { animation: fadeIn .25s ease both; }

/* ---------- 6. 主頁：標題、考試卡、模式卡 ---------- */
.hero {
  padding: clamp(16px, 2.4vw, 26px);
  background: linear-gradient(150deg, var(--card), var(--card-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
#home-sub { margin-top: .5em; color: var(--muted); max-width: 68ch; }

.section-title {
  margin-top: 6px;
  padding-left: 10px;
  border-left: 4px solid var(--accent);
  font-weight: 700;
  font-size: .98rem;
  letter-spacing: .02em;
}

.exam-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.exam-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(16px, 2vw, 22px);
  text-align: left;
  color: var(--text);
  background: linear-gradient(160deg, var(--card), var(--card-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  cursor: pointer;
  font: inherit;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.exam-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  box-shadow: 0 14px 34px rgba(0, 0, 0, .42);
}
.exam-card-top { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.exam-code {
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.2rem);
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.exam-badge {
  padding: .18em .6em;
  font-size: .74rem;
  font-weight: 700;
  color: var(--accent-2);
  border: 1px solid color-mix(in srgb, var(--accent-2) 45%, var(--line));
  border-radius: 999px;
}
.exam-name { font-weight: 700; font-size: 1rem; }
.exam-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.exam-summary { color: var(--muted); font-size: .9rem; }
.exam-go {
  margin-top: auto;
  font-weight: 700;
  color: var(--accent-2);
  font-size: .9rem;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.mode-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  text-align: left;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  cursor: pointer;
  font: inherit;
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}
.mode-card:hover {
  transform: translateY(-3px);
  background: var(--card-2);
  border-color: color-mix(in srgb, var(--accent-2) 50%, var(--line));
}
.mode-icon {
  font-size: 1.5rem;
  line-height: 1;
  filter: drop-shadow(0 3px 8px rgba(0, 0, 0, .3));
}
.mode-title { font-weight: 700; }
.mode-desc { color: var(--muted); font-size: .86rem; }

.home-note {
  margin-top: 4px;
  padding: 10px 12px;
  color: var(--muted);
  font-size: .8rem;
  background: var(--bg-soft);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

/* ---------- 7. 考試詳情 ---------- */
.panel-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  flex-wrap: wrap;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.panel-head p { margin: .3em 0 0; font-size: .9rem; }

.exam-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}
.stat-card {
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.stat-card h3 {
  margin-bottom: .5em;
  font-size: .88rem;
  color: var(--muted);
  text-transform: none;
  letter-spacing: .02em;
}
.stat-card ul { padding-left: 1.1em; font-size: .9rem; }

.section-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.section-chips .placeholder { flex: 1 1 100%; }

.exam-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 4px;
}

/* ---------- 8. 一般控制項：按鈕、徽章、晶片 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: .55em 1.05em;
  font: inherit;
  font-size: .92rem;
  font-weight: 700;
  color: var(--text);
  background: var(--card-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .14s ease, background .14s ease, border-color .14s ease, opacity .14s ease;
}
.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent-2) 55%, var(--line));
}
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled,
.btn.disabled {
  opacity: .5;
  cursor: not-allowed;
}
.btn-primary {
  color: #22190a;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 70%, var(--accent-2)));
  border-color: transparent;
}
body.light .btn-primary { color: #fff; }
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--muted);
}
.btn-ghost:hover:not(:disabled) { color: var(--text); }
.btn-icon {
  padding: .4em .55em;
  font-size: 1rem;
  line-height: 1;
  border-radius: var(--radius);
}
.btn-sm { padding: .35em .75em; font-size: .82rem; }

/* 回到「學習練習站」入口頁（跨站連結，用虛線框與 App 內部按鈕區分） */
a.btn-site-home {
  text-decoration: none;
  border-style: dashed;
  color: var(--muted);
}
a.btn-site-home:hover:not(:disabled) {
  color: var(--text);
  border-color: var(--accent);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: .18em .62em;
  font-size: .78rem;
  font-weight: 700;
  color: var(--text);
  background: var(--card-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  white-space: nowrap;
}
.chip-lv { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.chip-ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 50%, var(--line)); }
.chip-bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 50%, var(--line)); }
.chip-warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 50%, var(--line)); }

.hidden { display: none !important; }

/* ---------- 9. 作答：題目卡 ---------- */
.quiz-head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.section-chip {
  display: inline-flex;
  align-items: center;
  padding: .22em .8em;
  font-size: .8rem;
  font-weight: 700;
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-2) 40%, var(--line));
  border-radius: 999px;
  white-space: nowrap;
}

.paper-progress {
  position: relative;
  flex: 1 1 180px;
  min-width: 140px;
  height: 12px;
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.paper-progress-fill {
  height: 100%;
  width: var(--progress, 0%);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  transition: width .3s ease;
}

.q-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.q-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: .8rem;
  color: var(--muted);
}
.q-topic {
  display: inline-flex;
  align-items: center;
  padding: .14em .6em;
  font-weight: 700;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--line));
  border-radius: 999px;
}
.q-stem {
  font-size: 1.06rem;
  line-height: 1.75;
  white-space: pre-wrap;
}
.q-stem p { margin: 0 0 .7em; }

/* 表格題：窄螢幕可橫向捲動 */
.q-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
}
.q-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: .92rem;
  font-variant-numeric: tabular-nums;
}
.q-table caption {
  padding: 10px 12px;
  font-weight: 700;
  text-align: left;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}
.q-table th,
.q-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
  text-align: left;
  white-space: nowrap;
}
.q-table th:last-child,
.q-table td:last-child { border-right: 0; }
.q-table thead th {
  background: var(--card-2);
  font-weight: 700;
  position: sticky;
  top: 0;
}
.q-table tbody tr:nth-child(even) { background: color-mix(in srgb, var(--card-2) 45%, transparent); }
.q-table tbody tr:hover { background: color-mix(in srgb, var(--accent-2) 10%, transparent); }
.q-table td.num,
.q-table th.num { text-align: right; }

/* 選項 */
.q-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.opt {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  text-align: left;
  font: inherit;
  color: var(--text);
  background: var(--card-2);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease, background .12s ease;
}
.opt:hover:not(.disabled) {
  transform: translateX(2px);
  border-color: color-mix(in srgb, var(--accent-2) 55%, var(--line));
}
.opt-key {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7em;
  height: 1.7em;
  font-size: .84rem;
  font-weight: 800;
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 16%, transparent);
  border-radius: 50%;
}
.opt-text { flex: 1 1 auto; white-space: pre-wrap; }

.opt.correct {
  border-color: var(--ok);
  background: color-mix(in srgb, var(--ok) 20%, var(--card-2));
}
.opt.correct .opt-key { color: #06281d; background: var(--ok); }
.opt.wrong {
  border-color: var(--bad);
  background: color-mix(in srgb, var(--bad) 20%, var(--card-2));
}
.opt.wrong .opt-key { color: #2b0606; background: var(--bad); }
.opt.disabled {
  cursor: default;
  opacity: .92;
}
.opt.disabled:not(.correct):not(.wrong) { opacity: .68; }
.opt:disabled { cursor: default; }

/* 詳解與收藏 */
.q-explain {
  padding: 12px 14px;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--text);
  background: color-mix(in srgb, var(--accent-2) 10%, var(--bg-soft));
  border: 1px solid color-mix(in srgb, var(--accent-2) 34%, var(--line));
  border-left: 4px solid var(--accent-2);
  border-radius: var(--radius);
}
.q-explain strong { color: var(--accent-2); }
.q-explain .q-source { display: block; margin-top: .5em; color: var(--muted); font-size: .82rem; }

.q-fav {
  align-self: flex-start;
  padding: .3em .8em;
  font: inherit;
  font-size: .84rem;
  font-weight: 700;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color .14s ease, border-color .14s ease, transform .14s ease;
}
.q-fav:hover { transform: translateY(-1px); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.q-fav.is-fav {
  color: #22190a;
  background: var(--accent);
  border-color: transparent;
}

.quiz-body { display: flex; flex-direction: column; gap: 14px; }

.quiz-foot {
  position: sticky;
  bottom: 8px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px;
  background: color-mix(in srgb, var(--bg-soft) 90%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.quiz-foot .btn-primary { margin-left: auto; }

/* 模擬考計時器與連擊 */
.exam-timer {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: .28em .85em;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace;
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-2) 40%, var(--line));
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
.exam-timer.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 55%, var(--line)); background: color-mix(in srgb, var(--warn) 14%, transparent); }
.exam-timer.danger {
  color: var(--bad);
  border-color: color-mix(in srgb, var(--bad) 60%, var(--line));
  background: color-mix(in srgb, var(--bad) 16%, transparent);
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: .55; }
}

.combo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  color: var(--accent);
  text-shadow: 0 0 14px color-mix(in srgb, var(--accent) 60%, transparent);
  animation: comboPop .4s ease both;
}
@keyframes comboPop {
  0%   { transform: scale(.7); opacity: 0; }
  60%  { transform: scale(1.12); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* ---------- 10. 結算 ---------- */
.result-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(16px, 2.4vw, 26px);
  background: linear-gradient(160deg, var(--card), var(--card-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.result-title { font-size: clamp(1.2rem, 1rem + 1vw, 1.7rem); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}
.stat-cell {
  padding: 14px;
  text-align: center;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.stat-cell-hero {
  background: linear-gradient(150deg, color-mix(in srgb, var(--accent) 22%, var(--card)), var(--card));
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}
.stat-value {
  font-size: clamp(1.4rem, 1.1rem + 1.3vw, 2rem);
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.stat-unit { margin-left: 2px; font-size: .55em; font-weight: 700; color: var(--muted); }
.stat-label { margin-top: 2px; font-size: .8rem; color: var(--muted); }

.result-detail {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: .94rem;
}
.result-detail ul { padding-left: 1.2em; }

/* ---------- 11. 錯題本／收藏 ---------- */
.tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.tab {
  padding: .42em 1em;
  font: inherit;
  font-size: .88rem;
  font-weight: 700;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: color .14s ease, background .14s ease;
}
.tab:hover { color: var(--text); }
.tab.is-active {
  color: #22190a;
  background: var(--accent);
}
body.light .tab.is-active { color: #fff; }

.book-body { min-height: 80px; }

.book-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.book-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent-2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.book-item-main { flex: 1 1 60%; min-width: 0; }
.book-item-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: .8rem; color: var(--muted); }
.book-item-actions { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

/* ---------- 12. 統計與成就 ---------- */
.stats-body { overflow-x: auto; }

.stats-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  font-variant-numeric: tabular-nums;
}
.stats-caption {
  padding: 10px 12px;
  font-weight: 700;
  text-align: left;
  color: var(--muted);
}
.stats-table th,
.stats-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.stats-table thead th {
  background: var(--card-2);
  color: var(--text);
  font-weight: 700;
  position: sticky;
  top: 0;
}
.stats-table tbody tr:nth-child(even) { background: color-mix(in srgb, var(--card-2) 40%, transparent); }
.stats-table tbody tr:last-child td { border-bottom: 0; }
.stats-table .num { text-align: right; }

.badges-body {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}

.badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 10px;
  text-align: center;
  font-size: .82rem;
  font-weight: 700;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .16s ease, border-color .16s ease;
}
.badge:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.badge-icon { font-size: 1.6rem; line-height: 1; }
.badge-desc { font-weight: 400; color: var(--muted); font-size: .78rem; }

.badge-locked {
  opacity: .55;
  filter: grayscale(1);
}
.badge-locked .badge-icon { filter: grayscale(1) blur(.4px); }

/* ---------- 13. 提示訊息與對話框 ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 90;
  max-width: min(92vw, 460px);
  padding: 10px 18px;
  font-size: .9rem;
  font-weight: 700;
  text-align: center;
  color: var(--text);
  background: color-mix(in srgb, var(--card-2) 94%, transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow);
  transform: translate(-50%, 24px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
}
.toast.show,
.toast.is-show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(4, 8, 18, .68);
  backdrop-filter: blur(3px);
  animation: fadeIn .18s ease both;
}
.modal[hidden] { display: none; }

.modal-panel {
  width: min(560px, 100%);
  max-height: 86vh;
  overflow: auto;
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .5);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.modal-head h2 { font-size: 1.1rem; }
.modal-body { font-size: .94rem; }
.modal-body ul { padding-left: 1.2em; }

/* ---------- 14. 頁腳 ---------- */
.app-foot {
  margin-top: 28px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  text-align: center;
}
.app-foot .small { font-size: .78rem; }

/* ---------- 15. 特效層 ---------- */
#fx {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 60;
}

/* ---------- 16. 平板 ---------- */
@media (max-width: 900px) {
  .mode-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 17. 手機 ---------- */
@media (max-width: 640px) {
  body { font-size: 15px; }

  #app-shell { padding: 10px 10px 36px; }

  #topbar {
    gap: 8px;
    padding: 8px 10px;
    border-radius: var(--radius);
  }
  .brand-text { display: none; }
  .topbar-right { gap: 6px; }
  #topbar .chip { font-size: .72rem; padding: .14em .5em; }
  #topbar .btn { font-size: .9rem; padding: .34em .48em; }

  .xp-bar { height: 20px; margin-bottom: 14px; }
  .xp-text { font-size: .68rem; }

  .hero { padding: 14px; }
  #home-sub { font-size: .9rem; }

  /* 全部單欄 */
  .exam-grid,
  .mode-grid,
  .exam-stats,
  .stat-grid,
  .badges-body { grid-template-columns: 1fr; }

  .exam-code { font-size: 1.7rem; }
  .q-stem { font-size: 1rem; }
  .q-card { padding: 14px; }
  .opt { padding: 11px 12px; }
  .q-table { min-width: 380px; font-size: .86rem; }

  .quiz-foot {
    gap: 6px;
    padding: 8px;
    bottom: 4px;
  }
  .quiz-foot .btn { font-size: .8rem; padding: .45em .7em; }
  .quiz-foot .btn-primary { margin-left: 0; width: 100%; order: 5; }

  .panel-head { padding: 12px; }
  .modal-panel { padding: 14px; }
  .toast { bottom: 14px; font-size: .84rem; padding: 9px 14px; }
}

/* ---------- 18. 減少動態偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* ---------- 19. 列印：只留題目內容 ---------- */
@media print {
  #topbar,
  #fx,
  #toast,
  .btn,
  .mode-grid,
  .exam-card,
  .exam-grid,
  .quiz-foot,
  .tabs,
  .app-foot,
  .skip-link,
  .section-title { display: none !important; }

  html, body {
    background: #fff !important;
    color: #000 !important;
    font-size: 11.5pt;
  }
  #app-shell { max-width: none; padding: 0; }
  .view { gap: 8px; }

  .q-card,
  .result-body,
  .stat-cell,
  .book-item {
    background: #fff !important;
    color: #000 !important;
    border-color: #999 !important;
    box-shadow: none !important;
  }
  .q-card { break-inside: avoid; page-break-inside: avoid; }
  .q-stem { white-space: normal; }

  .opt {
    background: #fff !important;
    color: #000 !important;
    border-color: #999 !important;
    break-inside: avoid;
  }
  .opt-key { color: #000 !important; background: #eee !important; }
  .opt.correct { border-color: #000 !important; background: #eee !important; }
  .opt.wrong { border-color: #777 !important; background: #f5f5f5 !important; }

  .q-explain {
    background: #fff !important;
    border-color: #999 !important;
    border-left-color: #333 !important;
  }
  .q-table { min-width: 0; }
  .q-table th, .q-table td { border-color: #999 !important; }
  .q-table thead th { background: #eee !important; color: #000 !important; }
  .stats-table, .stats-table th, .stats-table td { border-color: #999 !important; }
}