/* ============================================================
   词岛屿 · Web 端补充样式
   基础样式在 styles.css（沿用原设计语言），这里只补新增组件。
   配色变量全部复用 styles.css 的 :root，不引入第二套色板。
   ============================================================ */

/* ---------- 启动遮罩 ---------- */

.boot-screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--paper);
  z-index: 90;
}

/* 图标本身已经带墨蓝底与圆角，所以这里只负责尺寸和脉动，
   不再自己画底色 —— 否则会在图标外面套一层深色方块。 */
.boot-mark {
  display: block;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  animation: bootpulse 1.4s ease-in-out infinite;
}

@keyframes bootpulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .55; transform: scale(.94); }
}

/* 启动失败：同一遮罩内就地重试，不把用户踢回登录页 */
.boot-state {
  display: grid;
  place-items: center;
  gap: 14px;
  max-width: 320px;
  padding: 0 24px;
  text-align: center;
}

.boot-error-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.boot-error-text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.boot-state .primary-button {
  margin-top: 4px;
}

/* ---------- 可重试错误块 ---------- */

.error-block {
  display: grid;
  gap: 10px;
  justify-items: start;
  padding: 18px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-block strong {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.error-block p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.error-block .mini-button {
  justify-self: start;
}

[hidden] { display: none !important; }

/* ---------- 登录 / 注册 ---------- */

.auth-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 40px 22px;
  background:
    radial-gradient(circle at 82% 12%, rgba(243, 201, 105, .28), transparent 42%),
    radial-gradient(circle at 12% 88%, rgba(112, 131, 108, .16), transparent 46%),
    var(--paper);
}

.auth-card {
  width: min(420px, 100%);
  min-width: 0;
  max-width: 100%;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 38px 34px 30px;
  box-shadow: var(--shadow);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 34px;
}

.auth-brand strong {
  display: block;
  font-size: 14px;
  letter-spacing: .02em;
}

.auth-brand small {
  display: block;
  font-size: 9px;
  letter-spacing: .18em;
  color: var(--muted);
}

.auth-title {
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: -.04em;
  font-weight: 600;
  margin: 0 0 9px;
}

.auth-sub {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 26px;
}

.auth-form {
  display: grid;
  gap: 15px;
  min-width: 0;
}

.field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.field > span {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
  text-transform: uppercase;
}

.field input,
.field select {
  width: 100%;
  min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  transition: border-color .18s, background .18s;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--green);
  background: var(--white);
}

.field input::placeholder {
  color: #b3b2a8;
}

.auth-form .primary-button {
  margin-top: 8px;
  justify-content: center;
  gap: 10px;
}

.auth-form .primary-button:disabled {
  opacity: .6;
  cursor: default;
}

.auth-error {
  margin: 0;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(176, 88, 74, .1);
  color: #a2503f;
  font-size: 12.5px;
}

.auth-switch {
  margin: 22px 0 0;
  font-size: 12.5px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.auth-switch .text-button {
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
}

.auth-note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--muted);
}

/* ---------- 通用状态 ---------- */

.loading-state,
.empty-inline {
  padding: 34px 4px;
  color: var(--muted);
  font-size: 13px;
}

.empty-inline p {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 14px;
}

.empty-inline small {
  color: var(--muted);
  font-size: 12px;
}

.empty-state {
  margin-top: 46px;
  padding: 54px 30px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  text-align: center;
}

.empty-state h2 {
  font-size: 24px;
  letter-spacing: -.03em;
  margin: 0 0 10px;
}

.empty-state p {
  color: var(--muted);
  font-size: 13px;
  max-width: 420px;
  margin: 0 auto 24px;
}

.empty-state .primary-button {
  width: auto;
  margin: 0 auto;
  padding: 13px 24px;
  gap: 18px;
}

/* ---------- 轻提示 ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 18px);
  padding: 11px 20px;
  border-radius: 10px;
  background: var(--ink);
  color: var(--paper);
  font-size: 13px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s, transform .22s;
  z-index: 120;
  max-width: min(420px, calc(100vw - 40px));
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast[data-kind="warn"] { background: #a2503f; }
.toast[data-kind="ok"] { background: var(--green); }

/* ---------- 任务状态 & 按钮禁用 ---------- */

.task-row:disabled,
.primary-button:disabled {
  opacity: .55;
  cursor: default;
}

.task-row:disabled:hover,
.primary-button:disabled:hover {
  transform: none;
}

.task-status[hidden],
.task-copy[hidden] { display: none; }

/* ---------- 我的词库 ---------- */

.heading-streak strong {
  font-size: 22px;
  letter-spacing: -.02em;
}

.mine-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.mine-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 15px;
  background: rgba(255, 253, 248, .55);
  display: grid;
  gap: 4px;
}

.mine-card.is-active {
  border-color: var(--green);
  background: var(--white);
}

.mine-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 10px;
}

.mine-card strong {
  font-size: 14.5px;
}

.mine-card small {
  color: var(--muted);
  font-size: 11.5px;
  margin-bottom: 9px;
}

.mine-badge {
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 20px;
  padding: 2px 9px;
}

.mine-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.mine-hint {
  font-size: 11.5px;
  color: var(--green);
}

.mini-button {
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--ink);
  color: var(--sun);
  font-size: 11.5px;
  transition: opacity .18s, transform .15s;
}

.mini-button:hover { transform: translateY(-1px); }

.mini-button.is-quiet {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
}

.mini-button.is-quiet:hover {
  color: var(--ink);
  border-color: var(--ink);
}

/* 封面小尺寸变体 */
.book-cover.is-small {
  width: 38px;
  height: 50px;
  font-size: 8px;
  padding: 7px 6px;
  flex-shrink: 0;
}

.book-cover strong {
  display: block;
  font-family: Georgia, serif;
  font-size: 15px;
  line-height: 1;
  margin-top: 2px;
}

.book-cover small {
  display: block;
  font-size: 7px;
  letter-spacing: .1em;
  opacity: .8;
}

.book-card .book-cover strong { font-size: 17px; }

/* 分区切换 */
.tab-group {
  display: flex;
  gap: 4px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 20px;
}

.tab {
  padding: 6px 15px;
  border-radius: 17px;
  background: none;
  color: var(--muted);
  font-size: 12px;
  transition: background .18s, color .18s;
}

.tab.is-active {
  background: var(--ink);
  color: var(--sun);
}

/* 目录行 */
.catalog-list {
  border-top: 1px solid var(--line);
}

.catalog-row {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 13px 4px;
  border-bottom: 1px solid var(--line);
}

.catalog-row.is-selected {
  opacity: .72;
}

.catalog-copy {
  display: grid;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.catalog-copy strong { font-size: 14px; overflow-wrap: anywhere; }

.catalog-copy small {
  color: var(--muted);
  font-size: 11.5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.catalog-count {
  font: 13px Georgia, serif;
  color: var(--muted);
  flex-shrink: 0;
}

.catalog-state {
  font-size: 11px;
  color: var(--green);
  flex-shrink: 0;
  min-width: 52px;
  text-align: right;
}

.catalog-row .mini-button { flex-shrink: 0; }

/* ---------- 复习计划 ---------- */

.due-list,
.collection-list {
  border-top: 1px solid var(--line);
}

.collection-actions {
  padding: 14px 4px 16px;
}

.collection-actions .primary-button {
  width: 100%;
}

.due-row,
.collection-row {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
}

.due-word {
  display: grid;
  gap: 1px;
  min-width: 130px;
}

.due-word strong {
  font: 17px Georgia, serif;
  letter-spacing: -.01em;
  overflow-wrap: anywhere;
}

.due-word small {
  color: var(--muted);
  font-size: 10.5px;
}

.due-meaning {
  flex: 1;
  font-size: 13px;
  color: var(--ink);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.due-tag {
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--green);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 2px 10px;
  flex-shrink: 0;
}

.status-panel,
.ladder-panel {
  min-height: 0;
  display: grid;
  gap: 17px;
}

.status-row {
  display: grid;
  gap: 6px;
}

.status-top {
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
}

.status-top span {
  color: var(--muted);
  font-family: Georgia, serif;
}

.status-row small {
  color: var(--muted);
  font-size: 11px;
}

.ladder-panel {
  gap: 0;
}

.ladder-row {
  display: grid;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.ladder-row:last-child { border-bottom: 0; }

.ladder-row strong {
  font-size: 13px;
}

.ladder-row small {
  color: var(--muted);
  font-size: 11.5px;
}

.ladder-row[data-tone="warn"] strong { color: #a2503f; }
.ladder-row[data-tone="mid"] strong { color: #a8873c; }
.ladder-row[data-tone="ok"] strong { color: var(--green); }

.section-meta {
  font-size: 11.5px;
  color: var(--muted);
}

/* ---------- 统计 ---------- */

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-top: 40px;
}

.metric-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 19px 20px 17px;
  background: rgba(255, 253, 248, .55);
  display: grid;
  gap: 8px;
}

.metric-card > small {
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--muted);
  text-transform: uppercase;
}

.metric-card strong {
  font: 32px Georgia, serif;
  letter-spacing: -.03em;
  line-height: 1;
}

.metric-card strong em {
  font-style: normal;
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0;
}

.metric-hint {
  font-size: 11px;
  color: var(--muted);
}

/* 学习时长是句子不是数字，用不着 32px 的衬线大号 */
.metric-card strong.is-text {
  font: 22px/1.2 Georgia, serif;
  letter-spacing: 0;
}

/* 当前词书的完成度 */
.book-progress-panel {
  margin-top: 26px;
  padding: 20px 22px 18px;
}

.book-progress-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.book-progress-head small {
  display: block;
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--muted);
  text-transform: uppercase;
}

.book-progress-head strong {
  display: block;
  margin-top: 5px;
  font-size: 17px;
  overflow-wrap: anywhere;
}

.book-progress-figure {
  flex-shrink: 0;
  font: 30px Georgia, serif;
  letter-spacing: -.03em;
  line-height: 1;
}

.book-progress-figure em {
  font-style: normal;
  font-size: 14px;
  color: var(--muted);
}

.book-progress-panel .book-progress {
  margin: 14px 0 8px;
}

.book-progress-note {
  margin: 0;
  font-size: 11px;
  color: var(--muted);
}

.chart-panel {
  min-height: 0;
  padding: 26px 27px 20px;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 190px;
}

.chart-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  gap: 9px;
  height: 100%;
}

.chart-bar {
  width: 100%;
  max-width: 42px;
  background: var(--paper-deep);
  border-radius: 5px 5px 2px 2px;
  position: relative;
  display: flex;
  align-items: flex-end;
  transition: height .4s ease;
  min-height: 4px;
}

.chart-fill {
  display: block;
  width: 100%;
  background: var(--green);
  border-radius: 5px 5px 2px 2px;
  transition: height .4s ease;
}

.chart-column small {
  font-size: 10px;
  color: var(--muted);
  font-family: Georgia, serif;
}

.chart-legend {
  display: flex;
  gap: 18px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--muted);
}

.chart-legend span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  display: block;
}

.legend-dot.is-known { background: var(--green); }
.legend-dot.is-total { background: var(--paper-deep); }

.source-panel {
  min-height: 0;
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.7;
}

.source-panel p { margin: 0; }

.source-panel a {
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

/* ---------- 设置 ---------- */

.settings-form {
  min-height: 0;
  display: grid;
  gap: 16px;
  max-width: 440px;
}

.settings-form .primary-button {
  margin-top: 6px;
  justify-content: center;
  gap: 10px;
}

.settings-form .primary-button:disabled { opacity: .6; }

.settings-hint {
  margin: 0;
  font-size: 11.5px;
  color: var(--muted);
}

.settings-list {
  min-height: 0;
  padding: 6px 27px;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.settings-row:last-child { border-bottom: 0; }

.settings-row > div {
  display: grid;
  gap: 3px;
}

.settings-row strong { font-size: 13.5px; }

.settings-row small {
  font-size: 11.5px;
  color: var(--muted);
}

.settings-state {
  font-size: 11.5px;
  color: var(--muted);
  flex-shrink: 0;
}

.settings-state.is-on { color: var(--green); }

/* 偏好开关：纯 CSS，不依赖 JS 改类名 */
.switch {
  position: relative;
  display: inline-flex;
  flex-shrink: 0;
  cursor: pointer;
}

.switch input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.switch-track {
  display: block;
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: var(--line);
  transition: background .18s;
  position: relative;
}

.switch-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--white);
  box-shadow: 0 1px 3px rgba(20, 33, 61, .22);
  transition: transform .18s;
}

.switch input:checked + .switch-track { background: var(--green); }
.switch input:checked + .switch-track::after { transform: translateX(20px); }
.switch input:focus-visible + .switch-track { outline: 2px solid var(--ink); outline-offset: 2px; }

/* 危险操作按钮：注销账号 */
.primary-button.is-danger {
  background: #8c2f2f;
  color: #fdf3ef;
}

.primary-button.is-danger:disabled {
  background: var(--line);
  color: var(--muted);
  cursor: not-allowed;
  opacity: 1;
}

a.mini-button {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 1;
}

.settings-hint code,
.settings-form code {
  background: var(--paper-deep);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: .06em;
}

/* ---------- 学习浮层补充 ---------- */

/*
 * 原样式把浮层贴在底部（align-items:flex-end）。
 * 一旦释义展开，内容会高过视口并从顶部溢出，
 * 所以这里给 sheet 限高并让它内部滚动。
 */
.learning-overlay {
  align-items: center;
  overflow-y: auto;
  padding: 20px;
}

.learning-sheet {
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 40px);
  border-radius: 16px;
}

.learning-header {
  flex-shrink: 0;
}

.word-stage {
  overflow-y: auto;
  overscroll-behavior: contain;
}

/*
 * 学习浮层里的插画。
 *
 * 限高 180px 而不是让图片按宽度铺满：浮层的核心是「词 + 释义 + 反馈按钮」，
 * 图太大会把「不认识 / 有点模糊 / 认识」挤出可视区，反而挡住主流程。
 * 居中 + 圆角，让它看起来是补充信息而不是主体。
 */
.learning-figure {
  margin: 12px auto 14px;
  max-width: 180px;
}

.learning-figure img {
  display: block;
  width: 100%;
  height: 180px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--paper-deep);
}

.feedback-area {
  flex-shrink: 0;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.word-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 20px;
  position: relative;
}

/* 收藏按钮浮在 word-meta 右侧，不挤压居中的徽标 */
.mark-button {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
  padding: 4px 2px;
  cursor: pointer;
  transition: color .15s ease;
}

.mark-button svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linejoin: round;
}

.mark-button:hover { color: var(--ink); }

.mark-button.is-active { color: var(--sun); }
.mark-button.is-active svg { fill: var(--sun); stroke: var(--sun); }

.mark-button.is-busy { opacity: .45; pointer-events: none; }

/* 音标即播放按钮 */
.phonetic-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 4px 0 2px;
}

.phonetic.is-playable {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 0;
  background: transparent;
  margin: 0;
  padding: 4px 8px;
  border-radius: 20px;
  cursor: pointer;
  /* .phonetic 自带 14px Georgia，这里只调颜色和交互态 */
  color: var(--muted);
  transition: background .15s ease, color .15s ease;
}

.phonetic.is-playable:hover { background: rgba(20, 33, 61, .06); color: var(--ink); }

.phonetic.is-playable .speaker {
  display: inline-flex;
  width: 15px;
  height: 15px;
  color: var(--green);
}

.phonetic.is-playable .speaker svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 播放中：喇叭轻微起伏，比转圈更贴合「声音」的语义 */
.phonetic.is-playable.is-playing .speaker { animation: speaker-pulse .7s ease-in-out infinite; }

@keyframes speaker-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.16); opacity: .72; }
}

.phonetic-accent {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  border-radius: 20px;
  font-size: 10.5px;
  letter-spacing: .06em;
  padding: 2px 9px;
  cursor: pointer;
}

.phonetic-accent:hover { border-color: var(--green); color: var(--green); }

/* 音频缺失（上游没这段录音）：灰掉但仍可点，不弹错误 */
.phonetic.is-playable.is-missing,
.example-play.is-missing { opacity: .35; }

/* 例句朗读按钮，跟在句子前面 */
.example-play {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-right: 5px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  vertical-align: -3px;
}

.example-play svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.example-play:hover { color: var(--green); }
.example-play.is-playing { color: var(--green); }

.word-badge {
  font-size: 9.5px;
  letter-spacing: .1em;
  color: var(--sun);
  background: var(--ink);
  border-radius: 20px;
  padding: 2px 10px;
}

.word-badge.is-review {
  color: var(--green);
  background: transparent;
  border: 1px solid var(--green);
}

.word-badge:only-child:empty { display: none; }

.meaning-en {
  color: var(--muted);
  font: 13px Georgia, serif;
}

.meaning-examples {
  margin-top: 18px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 13px;
  text-align: left;
}

.example p {
  margin: 0;
  font: 13.5px Georgia, serif;
  color: var(--ink);
  line-height: 1.55;
}

.example small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11.5px;
}

.meaning-tip {
  margin-top: 15px;
  padding: 10px 13px;
  background: rgba(243, 201, 105, .16);
  border-radius: 8px;
  font-size: 12px !important;
  color: var(--ink);
  text-align: left;
}

.feedback-area.is-busy {
  opacity: .55;
  pointer-events: none;
}

.finish-button {
  max-width: 260px;
  margin: 30px auto 0;
  justify-content: center;
  gap: 12px;
}

/* 结束卡片的分类计数 */
.finish-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 10px;
  max-width: 460px;
  margin: 22px auto 0;
  padding: 0;
}

.finish-stats > div {
  padding: 12px 8px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  text-align: center;
}

.finish-stats dt {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}

.finish-stats dd {
  margin: 4px 0 0;
  font: 24px Georgia, serif;
  color: var(--ink);
}

.word-stage .phonetic {
  margin-top: 4px;
}

/* ---------- 移动端 ---------- */

@media (max-width: 900px) {
  .today-grid,
  .lower-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .chart-bars { height: 150px; }

  .due-word { min-width: 96px; }

  .settings-list { padding: 2px 20px; }
}

@media (max-width: 640px) {
  .auth-card { padding: 30px 22px 24px; }

  .auth-title { font-size: 28px; }

  .toast { bottom: 92px; }

  .metric-grid { grid-template-columns: 1fr 1fr; gap: 10px; }

  .metric-card { padding: 15px 15px 13px; }

  .metric-card strong { font-size: 26px; }

  .catalog-row { gap: 11px; }

  .catalog-count { display: none; }

  .due-row,
  .collection-row { gap: 10px; flex-wrap: wrap; }

  .due-meaning { flex-basis: 100%; }

  .chart-bars { gap: 6px; }

  .mine-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   查词
   ============================================================ */

.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 13px 16px;
  transition: border-color .16s ease, box-shadow .16s ease;
}

.search-bar:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(112, 131, 108, .12);
}

.search-icon {
  font-size: 17px;
  color: var(--muted);
  line-height: 1;
}

.search-input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font: 15px/1.4 inherit;
  color: var(--ink);
  letter-spacing: .01em;
}

.search-input::placeholder { color: #a9a99f; }

/* Safari 的 search 输入框自带清除按钮，和自绘的重复 */
.search-input::-webkit-search-cancel-button { display: none; }

.search-clear {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 0;
  border-radius: 50%;
  background: var(--paper-deep);
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.search-clear:hover { background: var(--line); color: var(--ink); }

.search-hint {
  margin: 11px 2px 18px;
  font-size: 12px;
  color: var(--muted);
}

.search-results {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.search-row {
  display: grid;
  grid-template-columns: minmax(120px, 1.1fr) minmax(0, 2fr) 48px 18px;
  align-items: center;
  gap: 13px;
  width: 100%;
  padding: 13px 16px;
  border: 0;
  background: var(--white);
  text-align: left;
  cursor: pointer;
  transition: background .13s ease;
}

.search-row:hover { background: var(--paper-deep); }

.search-word { display: grid; gap: 2px; min-width: 0; }

.search-word strong {
  font: 600 15px/1.3 Georgia, serif;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.search-word small {
  font: 11px/1.2 Georgia, serif;
  color: var(--muted);
}

.search-meaning {
  font-size: 12.5px;
  color: #4c5349;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-arrow { color: var(--muted); font-size: 13px; }

/* ---------- 词条详情 ---------- */

.detail-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px 26px;
}

.detail-back {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  padding: 0;
  margin-bottom: 14px;
  cursor: pointer;
}

.detail-back:hover { color: var(--ink); }

.detail-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.detail-word {
  margin: 0;
  font: 400 32px/1.15 Georgia, serif;
  color: var(--ink);
  letter-spacing: -.01em;
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* 详情页的收藏/错题按钮不浮层定位，直接跟在词头右边 */
.detail-actions {
  display: flex;
  flex-shrink: 0;
  gap: 4px;
  margin-top: 6px;
}

.detail-head .mark-button {
  position: static;
  transform: none;
  flex-shrink: 0;
}

/* 错题本的旗标按钮用绿色区分于收藏（金色） */
.mark-button.is-wrong.is-active { color: var(--green); }
.mark-button.is-wrong.is-active svg { fill: var(--green); stroke: var(--green); }

/*
 * 词条插画。
 *
 * aspect-ratio 让图片加载完成前就占好位，避免内容跳动（CLS）。
 * 底色调成 paper-deep，加载中/失败时不会闪白。
 */
.detail-figure {
  margin: 20px 0 4px;
  max-width: 320px;
}

.detail-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--paper-deep);
  object-fit: cover;
}

.detail-figure figcaption {
  margin-top: 7px;
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--muted);
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 4px;
}

.detail-block { margin: 18px 0 0; display: grid; gap: 9px; }

.detail-sense {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-size: 13.5px;
  color: #394536;
}

.detail-sense-text { display: grid; gap: 1px; }

.detail-sense-text small {
  font: 11.5px/1.4 Georgia, serif;
  font-style: italic;
  color: var(--muted);
}

.detail-meaning {
  margin: 12px 0 0;
  font-size: 15px;
  color: var(--ink);
}

.detail-meaning-en {
  margin: 5px 0 0;
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
}

.detail-example {
  border-left: 2px solid var(--paper-deep);
  padding-left: 12px;
}

.example-en {
  margin: 0;
  font: 14px/1.55 Georgia, serif;
  color: var(--ink);
}

.example-cn {
  margin: 3px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.detail-tip {
  margin: 18px 0 0;
  padding: 11px 13px;
  background: var(--paper-deep);
  border-radius: 9px;
  font-size: 12.5px;
  color: #4c5349;
  line-height: 1.55;
}

.detail-progress {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--muted);
}

@media (max-width: 720px) {
  .search-row {
    grid-template-columns: minmax(0, 1fr) 40px;
    row-gap: 4px;
  }
  .search-meaning { grid-column: 1; white-space: normal; }
  .search-arrow { display: none; }
  .detail-card { padding: 18px 16px 22px; }
  .detail-word { font-size: 26px; }
}
/* ============================================================
   学习日历
   ============================================================ */

.calendar-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.calendar-controls .mini-button {
  min-width: 30px;
  text-align: center;
}

.calendar-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.calendar-head strong {
  font: 600 14px/1.3 inherit;
  color: var(--ink);
}

.calendar-head small {
  font-size: 11.5px;
  color: var(--muted);
}

.calendar-weekhead {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
  margin-bottom: 6px;
}

.calendar-weekhead span {
  text-align: center;
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: .06em;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
}

.calendar-cell {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 7px;
  display: grid;
  place-items: center;
  background: var(--paper-deep);
  transition: transform .12s ease;
}

.calendar-cell i {
  font-style: normal;
  font-size: 10px;
  color: #a9a99f;
  line-height: 1;
}

/* 5 档由浅到深：0 天空白、4 深绿 */
.calendar-cell[data-level="0"] { background: #f0ebe1; }
.calendar-cell[data-level="1"] { background: #dfe6d9; }
.calendar-cell[data-level="2"] { background: #bccdb3; }
.calendar-cell[data-level="3"] { background: #93ac8b; }
.calendar-cell[data-level="4"] { background: #5d7557; }

.calendar-cell[data-level="1"] i { color: #7d8a75; }
.calendar-cell[data-level="2"] i { color: #4e6148; }
.calendar-cell[data-level="3"] i { color: #f2f6ee; }
.calendar-cell[data-level="4"] i { color: #f2f6ee; }

.calendar-cell:not(.is-blank):hover { transform: scale(1.09); }

.calendar-cell.is-blank { background: transparent; }

.calendar-cell.is-tiny {
  width: 11px;
  height: 11px;
  aspect-ratio: auto;
  border-radius: 3px;
}

.calendar-legend {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  margin-top: 12px;
  font-size: 10.5px;
  color: var(--muted);
}

.calendar-legend span { padding: 0 2px; }

/* ---------- 听音拼写 ---------- */

.spell-note {
  padding: 20px 24px;
  background: var(--white);
}

.spell-note p {
  margin: 0;
  font-size: 13px;
  color: var(--ink);
  line-height: 1.7;
}

.spell-note p + p { margin-top: 9px; }

.spell-note-dim {
  font-size: 12px !important;
  color: var(--muted) !important;
}

.spell-tally {
  font-size: 12px;
  color: var(--muted);
  font-family: Georgia, serif;
}

.spell-stage {
  padding: 8px 0 4px;
}

.spell-play-row {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 6px 0 22px;
}

.spell-play {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 62px;
  height: 62px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  color: var(--green);
  cursor: pointer;
  transition: .2s;
}

.spell-play svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.spell-play:hover:not(:disabled) {
  border-color: var(--green);
  background: var(--paper);
}

.spell-play:disabled {
  opacity: .38;
  cursor: not-allowed;
}

.spell-hint-text {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.5;
}

.spell-meaning {
  margin: 0 0 16px;
  font-size: 16px;
  color: var(--ink);
  line-height: 1.6;
}

.spell-input-row {
  display: flex;
  gap: 11px;
  align-items: stretch;
}

.spell-input {
  flex: 1;
  min-width: 0;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  font-size: 17px;
  font-family: Georgia, serif;
  letter-spacing: .02em;
  color: var(--ink);
}

.spell-input:focus {
  outline: none;
  border-color: var(--green);
}

.spell-submit {
  flex-shrink: 0;
  width: auto !important;
  /* .primary-button 基础样式带 margin-top:auto（在纵向堆叠里用来顶到底），
     横排时会把按钮压成一条线，这里必须清掉 */
  margin-top: 0;
  align-self: stretch;
  padding: 0 22px;
}

.spell-tip {
  margin: 11px 0 0;
  font-size: 11.5px;
  color: var(--muted);
}

.spell-result {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}

.spell-result.is-correct { border-color: #b6c7b2; }
.spell-result.is-wrong { border-color: #e0c7bf; }

.spell-verdict {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
}

.spell-result.is-correct .spell-verdict { color: var(--green); }
.spell-result.is-wrong .spell-verdict { color: #a05a48; }

.spell-expected {
  margin: 0 0 4px;
  font-size: 13.5px;
  color: var(--muted);
}

.spell-expected b {
  font: 20px Georgia, serif;
  color: var(--ink);
  letter-spacing: .01em;
  overflow-wrap: anywhere;
}

.spell-diff {
  margin: 12px 0 0;
  font: 16px Georgia, serif;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.spell-diff-legend {
  display: block;
  margin-top: 7px;
  font: 11px Inter, "PingFang SC", sans-serif;
  color: var(--muted);
  letter-spacing: .02em;
}

.spell-diff-extra {
  color: #a05a48;
  text-decoration: line-through;
  background: #f6e9e5;
}

.spell-diff-missing {
  color: var(--green);
  text-decoration: underline;
  background: #eaf0e7;
}

.spell-wrong-note {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.spell-result .primary-button {
  margin-top: 18px;
  width: 100%;
}

.spell-finished {
  padding: 26px 0 4px;
  text-align: center;
}

.spell-finished-title {
  margin: 10px 0 0;
  font-size: 26px;
  font-weight: 600;
}

.spell-finished .finish-stats { margin-top: 20px; }

.spell-finished-actions {
  display: grid;
  gap: 10px;
  max-width: 460px;
  margin: 20px auto 0;
}

.spell-finished-actions .primary-button { width: 100%; }

@media (max-width: 720px) {
  .spell-input-row { flex-direction: column; }
  .spell-submit { width: 100% !important; }
  .spell-play { width: 54px; height: 54px; }
}

@media (max-width: 640px) {
  .calendar-grid { gap: 4px; }
  .calendar-cell { border-radius: 6px; }
  .calendar-cell i { font-size: 9px; }
  .calendar-head { flex-direction: column; gap: 3px; }
  .calendar-controls .mini-button { font-size: 11px; padding: 4px 9px; }
}