/* ===== 手写笔记本风格（暗色模式是黑板粉笔风） ===== */

/* 英文字母用 Patrick Hand 手写体；不包含数字 0-9，数字用霞鹜文楷的，更好认 */
@font-face {
  font-family: 'Hand Latin';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/patrick-hand/files/patrick-hand-latin-400-normal.woff2') format('woff2');
  unicode-range: U+0020-002F, U+003A-007E, U+00A0-00FF, U+2013-2014, U+2018-201D, U+2026;
}

:root {
  --paper: #fbf7ee;
  --dot: rgba(70, 60, 50, .15);
  --card: #fffdf7;
  --ink: #2f2a33;
  --ink-soft: #6c6573;
  --line: #2f2a33;
  --line-soft: rgba(47, 42, 51, .35);
  --rule: rgba(43, 89, 195, .16);
  --pen: #2b59c3;
  --on-pen: #ffffff;
  --pen-soft: #e2eaff;
  --marker: #ffe27a;
  --red: #cf3e35;
  --red-soft: #fde6e2;
  --green: #2a8a4d;
  --green-soft: #e0f3e6;
  --orange: #c9620a;
  --note: #fff2a8;
  --tape: rgba(255, 255, 255, .6);
  --shadow: 3px 4px 0 rgba(47, 42, 51, .16);
  /* 不规则圆角，看起来像手画的框 */
  --r-card: 255px 18px 225px 18px / 18px 225px 18px 255px;
  --r-card2: 18px 225px 18px 255px / 255px 18px 225px 18px;
  --r-small: 18px 7px 16px 9px / 9px 16px 7px 18px;
  --hand: 'Hand Latin', 'LXGW WenKai Screen', 'Kaiti SC', 'STKaiti', 'KaiTi', 'PingFang SC', 'Microsoft YaHei', cursive;
  --ipa: 'Lucida Sans Unicode', 'Segoe UI', 'Noto Sans', 'DejaVu Sans', 'Arial Unicode MS', sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1f2b25;
    --dot: rgba(255, 255, 255, .07);
    --card: #26342d;
    --ink: #f1eee4;
    --ink-soft: #b7c1b6;
    --line: #e9e5d8;
    --line-soft: rgba(233, 229, 216, .35);
    --rule: rgba(255, 255, 255, .08);
    --pen: #9fc1ff;
    --on-pen: #13213d;
    --pen-soft: #2b3d58;
    --marker: rgba(255, 222, 110, .35);
    --red: #ff958c;
    --red-soft: #4a2622;
    --green: #93e2ad;
    --green-soft: #21402e;
    --orange: #ffb871;
    --note: #4b4626;
    --tape: rgba(255, 255, 255, .16);
    --shadow: 3px 4px 0 rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image: radial-gradient(var(--dot) 1.2px, transparent 1.4px);
  background-size: 22px 22px;
  font: 18px/1.6 var(--hand);
}
button, input, textarea { font: inherit; color: inherit; }
a { color: var(--pen); }
h2 { font-size: 21px; margin: 0 0 12px; }
.muted { color: var(--ink-soft); }
.small { font-size: 15px; }
.ok { color: var(--green); }
.warn { color: var(--orange); }
.bad-text { color: var(--red); }
.boot { padding: 80px 16px; text-align: center; color: var(--ink-soft); }
/* 荧光笔划重点 */
.hl {
  padding: 0 3px;
  background: linear-gradient(transparent 55%, var(--marker) 55%, var(--marker) 90%, transparent 90%);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
:focus-visible { outline: 2px dashed var(--pen); outline-offset: 3px; }

/* ---------- 整体布局：左边内容，右边菜单 ---------- */
.layout { display: flex; min-height: 100vh; }
.page { flex: 1; min-width: 0; }
.top-inner, .stats, .main { max-width: 780px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.main { padding-top: 20px; padding-bottom: 80px; }

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--paper);
  border-bottom: 2px dashed var(--line-soft);
  padding-bottom: 8px;
}
.top-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 10px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 23px; font-weight: 700; white-space: nowrap; }
.logo {
  width: 36px; height: 36px; display: inline-grid; place-items: center; flex: none;
  border: 2px solid var(--line); border-radius: var(--r-small); background: var(--note);
  box-shadow: 2px 2px 0 var(--line); transform: rotate(-6deg);
  font-family: var(--hand); font-size: 17px; font-weight: 400; color: var(--ink);
}
.top-right { display: flex; align-items: center; gap: 10px; }
.today-label { color: var(--ink-soft); font-size: 16px; white-space: nowrap; }
.stats { display: flex; flex-wrap: wrap; gap: 0 6px; padding-top: 2px; color: var(--ink-soft); font-size: 15px; }
.stats b { color: var(--ink); }
.stats-date { display: none; }

/* 窄屏才显示的“菜单”按钮 */
.menu-toggle {
  display: none; position: relative; align-items: center; gap: 6px; padding: 2px 10px; min-height: 36px;
  border: 2px solid var(--line); border-radius: var(--r-small); background: var(--card);
  box-shadow: 2px 2px 0 var(--line); cursor: pointer; font-size: 16px;
}
.burger {
  width: 16px; height: 12px; display: inline-block;
  background: linear-gradient(var(--ink) 0 2px, transparent 2px 5px, var(--ink) 5px 7px, transparent 7px 10px, var(--ink) 10px 12px);
}
.count {
  display: inline-block; min-width: 22px; padding: 0 6px; border-radius: 999px; background: var(--red); color: #fff;
  font-family: var(--hand); font-size: 14px; line-height: 22px; text-align: center;
}

/* ---------- 右侧菜单 ---------- */
.menu {
  flex: none; position: sticky; top: 0; height: 100vh; width: 210px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 6px; padding: 14px 10px 18px;
  background: var(--card); border-left: 2px solid var(--line);
  transition: width .25s ease;
}
.menu-fold {
  align-self: flex-start; display: inline-flex; align-items: center; gap: 6px; padding: 1px 10px;
  border: 2px dashed var(--line-soft); border-radius: var(--r-small); background: transparent;
  color: var(--ink-soft); font-size: 16px; cursor: pointer; white-space: nowrap;
}
.menu-fold:hover { color: var(--ink); border-color: var(--line); }
.fold-icon { font-size: 20px; line-height: 1; }
.menu-nav { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.menu-item {
  position: relative; display: flex; align-items: center; gap: 10px; padding: 8px 12px;
  border: 2px solid transparent; border-radius: var(--r-small);
  color: var(--ink); text-decoration: none; font-size: 19px; white-space: nowrap;
}
.menu-item:hover { border-color: var(--line-soft); border-style: dashed; }
.menu-item.active {
  border: 2px solid var(--line); background: var(--note); box-shadow: 2px 2px 0 var(--line);
  transform: rotate(-1.2deg); font-weight: 700;
}
.mi-icon { flex: none; width: 26px; text-align: center; font-size: 20px; }
.menu-item .count { margin-left: auto; }
.menu-note { margin-top: auto; padding: 12px 6px 0; color: var(--ink-soft); font-size: 15px; line-height: 1.5; transform: rotate(-2deg); }
.menu-backdrop { display: none; }

@media (min-width: 900px) {
  .layout.folded .menu { width: 66px; padding-left: 8px; padding-right: 8px; }
  .layout.folded .mi-text { display: none; }
  .layout.folded .menu-fold { align-self: center; padding: 1px 8px; }
  .layout.folded .menu-item { justify-content: center; padding: 8px 4px; }
  .layout.folded .menu-item .count {
    position: absolute; top: -6px; right: -6px; margin: 0; min-width: 20px; line-height: 20px; font-size: 12px;
  }
}

@media (max-width: 899px) {
  .menu-toggle { display: inline-flex; }
  .menu-toggle .count { position: absolute; top: -9px; right: -9px; min-width: 20px; line-height: 20px; font-size: 12px; }
  .menu {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 40; height: auto; width: min(260px, 82vw);
    transform: translateX(105%); transition: transform .25s ease; box-shadow: -6px 0 18px rgba(0, 0, 0, .18);
  }
  .layout.open .menu { transform: translateX(0); }
  .menu-backdrop {
    display: block; position: fixed; inset: 0; z-index: 35; background: rgba(20, 18, 24, .3);
    opacity: 0; pointer-events: none; transition: opacity .25s;
  }
  .layout.open .menu-backdrop { opacity: 1; pointer-events: auto; }
}

/* ---------- 卡片和按钮 ---------- */
.card {
  background: var(--card); border: 2px solid var(--line); border-radius: var(--r-card);
  box-shadow: var(--shadow); padding: 18px 20px; margin-bottom: 18px;
}
.list > .card:nth-child(even), .group > .card:nth-of-type(even) { border-radius: var(--r-card2); }
.list > .word-card:nth-child(3n+1) { transform: rotate(-.3deg); }
.list > .word-card:nth-child(3n+2) { transform: rotate(.25deg); }

.btn {
  appearance: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 40px; padding: 4px 14px; border: 2px solid var(--line); border-radius: var(--r-small);
  background: var(--card); color: var(--ink); box-shadow: 2px 2px 0 var(--line);
  cursor: pointer; text-decoration: none; font-size: 17px; white-space: nowrap;
  transition: transform .1s ease, box-shadow .1s ease;
}
.btn:hover { transform: translate(-1px, -1px) rotate(-.6deg); box-shadow: 3px 3px 0 var(--line); }
.btn:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--line); }
.btn.small { min-height: 34px; padding: 1px 11px; font-size: 16px; }
.btn.primary { background: var(--pen); color: var(--on-pen); }
.btn.primary-soft { background: var(--pen-soft); color: var(--pen); border-color: var(--pen); box-shadow: 2px 2px 0 var(--pen); }
.btn.ghost { background: transparent; border-color: transparent; box-shadow: none; color: var(--ink-soft); }
.btn.ghost:hover { transform: none; box-shadow: none; color: var(--ink); text-decoration: underline wavy; text-underline-offset: 4px; }
.btn.danger:hover { color: var(--red); }
.btn.ok { flex: 1; background: var(--green-soft); color: var(--green); border-color: var(--green); box-shadow: 2px 2px 0 var(--green); font-weight: 700; }
.btn.bad { flex: 1; background: var(--red-soft); color: var(--red); border-color: var(--red); box-shadow: 2px 2px 0 var(--red); font-weight: 700; }
.btn:disabled { opacity: .55; cursor: default; transform: none; }
.link {
  padding: 0; border: 0; background: none; color: var(--pen); cursor: pointer; font-size: 16px;
  text-decoration: underline wavy; text-underline-offset: 3px;
}

/* ---------- 今日一句：贴着胶带的便利贴 ---------- */
.quote {
  position: relative; margin-top: 12px; padding: 26px 22px 18px;
  background: var(--note); border: none; border-radius: 3px 3px 22px 3px;
  box-shadow: 2px 7px 12px rgba(0, 0, 0, .13); transform: rotate(-1deg);
}
.quote::before {
  content: ''; position: absolute; top: -13px; left: 50%; width: 120px; height: 28px;
  transform: translateX(-50%) rotate(-3deg); background: var(--tape); border: 1px solid rgba(0, 0, 0, .06);
}
.quote-label { color: var(--red); font-size: 15px; font-weight: 700; letter-spacing: 2px; }
.quote-en { margin: 6px 0 4px; font-size: 22px; line-height: 1.45; }
.quote-zh { margin: 0; color: var(--ink-soft); }
.quote-by { margin: 4px 0 0; text-align: right; color: var(--ink-soft); font-size: 15px; }

/* ---------- 添加单词 ---------- */
.add-row { display: flex; gap: 10px; align-items: flex-start; }
.add-row textarea {
  flex: 1; min-width: 0; min-height: 48px; max-height: 160px; resize: none; padding: 8px 12px;
  border: 2px solid var(--line); border-radius: var(--r-small); background: var(--paper);
  font-size: 22px; line-height: 1.4;
}
.add-row textarea:focus { outline: none; background: var(--card); box-shadow: 3px 3px 0 var(--marker); }
.add-row .btn { min-height: 48px; font-size: 19px; }
.add-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; margin-top: 12px; color: var(--ink-soft); font-size: 16px; }
.add-meta input[type=date] { padding: 1px 8px; border: 2px solid var(--line-soft); border-radius: var(--r-small); background: var(--card); }
.hint { font-size: 15px; }

.toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin: 24px 2px 14px; }
.toolbar-title { font-size: 20px; }
.toolbar-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- 单词卡片 ---------- */
.word-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px; }
.word-title { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; min-width: 0; }
.word { font-family: var(--hand); font-size: 30px; line-height: 1.2; letter-spacing: .5px; overflow-wrap: anywhere; }
.phonetic { color: var(--ink-soft); font-family: var(--ipa); font-size: 15px; }
.badge {
  align-self: center; padding: 0 8px; border: 1.5px solid currentColor; border-radius: var(--r-small);
  font-size: 14px; font-weight: 700; transform: rotate(-4deg);
}
.badge.cet4 { color: var(--pen); background: var(--pen-soft); }
.badge.basic { color: var(--green); background: var(--green-soft); }
.badge.cet6 { color: var(--orange); }
.badge.redo { color: var(--red); background: var(--red-soft); transform: rotate(3deg); }
.stars { align-self: center; color: #e8a400; font-size: 15px; letter-spacing: 1px; }
.word-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.meaning { display: grid; gap: 12px; margin-top: 12px; }
.field .label { margin-bottom: 2px; color: var(--red); font-size: 15px; font-weight: 700; }
.field .text { white-space: pre-wrap; overflow-wrap: anywhere; }
/* 四级用途：横线本的样子 */
.usage {
  padding: 0 14px 2px 18px; font-size: 17px; line-height: 30px;
  background-color: var(--paper);
  background-image: repeating-linear-gradient(transparent 0 29px, var(--rule) 29px 30px);
  border-left: 3px double var(--red); border-radius: 4px;
}
.usage .sec { color: var(--red); }
.similar summary { cursor: pointer; }
.similar summary::after { content: '（点开看区别）'; color: var(--ink-soft); font-size: 14px; }
.similar[open] summary::after { content: ''; }
.hidden-hint {
  display: block; width: 100%; margin-top: 12px; padding: 10px 12px; cursor: pointer; text-align: center;
  border: 2px dashed var(--line-soft); border-radius: var(--r-small); background: transparent;
  color: var(--ink-soft); font-size: 16px;
}
.hidden-hint::before { content: '✎ '; }
.hidden-hint:hover { border-color: var(--pen); color: var(--pen); }
.word-foot { margin-top: 10px; color: var(--ink-soft); font-size: 15px; }
.empty { padding: 40px 16px; text-align: center; color: var(--ink-soft); font-size: 18px; }

/* 编辑 */
.edit-form { display: grid; gap: 12px; }
.edit-form label { display: grid; gap: 4px; color: var(--ink-soft); font-size: 15px; font-weight: 700; }
.edit-form input, .edit-form textarea {
  width: 100%; padding: 8px 10px; border: 2px solid var(--line); border-radius: var(--r-small);
  background: var(--paper); color: var(--ink); font-size: 17px; font-weight: 400;
}
.edit-form textarea { resize: vertical; }
.edit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.edit-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- 复习 ---------- */
.review-summary .big { margin: 0 0 8px; font-size: 24px; }
.review-summary .accent { color: var(--red); font-size: 32px; }
.progress { height: 16px; margin: 10px 0 4px; overflow: hidden; border: 2px solid var(--line); border-radius: var(--r-small); background: var(--card); }
.progress > div {
  height: 100%; border-right: 2px solid var(--green); transition: width .3s;
  background: repeating-linear-gradient(-45deg, var(--green) 0 6px, transparent 6px 11px);
}
.forecast { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.chip { padding: 0 10px; border: 1.5px dashed var(--line-soft); border-radius: var(--r-small); color: var(--ink-soft); font-size: 15px; }
.chip b { color: var(--ink); }
.group { margin-top: 26px; }
.group-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; margin: 0 2px 12px; font-size: 19px; }
.review-actions { display: flex; gap: 12px; margin-top: 14px; }
.review-hint { margin: 8px 0 0; text-align: center; color: var(--ink-soft); font-size: 14px; }
.done-list { margin-top: 26px; }
.done-list summary, .day summary { padding: 8px 2px; cursor: pointer; color: var(--ink-soft); font-size: 18px; }
.done-row {
  display: grid; grid-template-columns: minmax(80px, auto) auto 1fr auto; align-items: center; gap: 4px 12px;
  padding: 8px 6px; border-bottom: 2px dashed var(--line-soft);
}
.done-row .word, .book-row .word { font-size: 23px; }

/* ---------- 单词本 ---------- */
.book-head input[type=search] {
  width: 100%; margin-bottom: 8px; padding: 8px 12px; border: 2px solid var(--line); border-radius: var(--r-small);
  background: var(--paper); font-size: 18px;
}
.book-head input[type=search]:focus { outline: none; box-shadow: 3px 3px 0 var(--marker); }
.day { margin-bottom: 10px; }
.day > summary b { font-size: 19px; }
.day > .word-card { margin: 10px 0; }
.book-row {
  display: grid; grid-template-columns: minmax(100px, auto) 1fr auto; align-items: center; gap: 4px 14px;
  padding: 6px 10px; border-bottom: 2px dashed var(--line-soft); cursor: pointer;
}
.book-row:hover { background: var(--card); }
.book-row .short { overflow: hidden; color: var(--ink-soft); font-size: 16px; text-overflow: ellipsis; white-space: nowrap; }
.book-row .short.blur { filter: blur(5px); }
.book-row .prog { color: var(--ink-soft); font-size: 15px; }

/* ---------- 设置 ---------- */
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; margin: 0 0 14px; font-size: 17px; }
.kv dt { color: var(--ink-soft); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.row-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.timeline { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 14px; padding: 0; list-style: none; }
.timeline li {
  padding: 0 10px; border: 2px solid var(--pen); border-radius: var(--r-small);
  background: var(--pen-soft); color: var(--pen); font-size: 16px; transform: rotate(-1deg);
}
.timeline li:nth-child(even) { transform: rotate(1.2deg); }
.timeline li.start { border-color: var(--line); background: var(--card); color: var(--ink); }
.timeline li.end { border-color: var(--green); background: var(--green-soft); color: var(--green); }
.rules { margin: 0; padding-left: 22px; }
.rules li { margin-bottom: 6px; }

/* ---------- 登录 ---------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 380px; display: grid; gap: 14px; padding: 30px 24px; text-align: center; background: var(--note); transform: rotate(-1deg); }
.login-card .brand { justify-content: center; }
.login-card input { padding: 10px 12px; border: 2px solid var(--line); border-radius: var(--r-small); background: var(--card); font-size: 18px; }
.login-error { min-height: 1.2em; margin: 0; font-size: 16px; }

/* ---------- 提示：小纸条 ---------- */
#toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 50; max-width: min(92vw, 520px); padding: 10px 18px;
  border: 2px solid var(--line); border-radius: var(--r-small); background: var(--note); color: var(--ink);
  box-shadow: 3px 4px 0 rgba(0, 0, 0, .2); font: 17px/1.5 var(--hand);
  opacity: 0; pointer-events: none; transform: translate(-50%, 20px) rotate(-1deg); transition: opacity .2s, transform .2s;
}
#toast.show { opacity: 1; transform: translate(-50%, 0) rotate(-1deg); }
#toast.error { background: var(--red-soft); border-color: var(--red); color: var(--red); }
#toast.ok { background: var(--green-soft); border-color: var(--green); color: var(--green); }

@media (max-width: 520px) {
  .today-label { display: none; }
  .stats-date { display: inline; }
  body { font-size: 17px; }
  .brand { font-size: 21px; }
  .word { font-size: 27px; }
  .card { padding: 16px; }
  .edit-grid { grid-template-columns: 1fr; }
  .done-row { grid-template-columns: 1fr auto auto; }
  .done-row .muted { grid-column: 1 / -1; order: 5; }
}
@media (max-width: 340px) {
  .mt-text { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}