/* 小小诗童 —— 为 iPad mini 竖/横屏优化的宣纸风界面 */

:root {
  --paper: #f7f3ea;
  --paper-2: #fffdf8;
  --paper-sunk: #efe8da;
  --ink: #2b2724;
  --ink-2: #5c5449;
  --ink-3: #8b8175;
  --line: #ddd3c1;
  --cinnabar: #b03a2e;
  --cinnabar-soft: #f0d9d3;
  --jade: #3d6b5c;
  --jade-soft: #d9e6df;
  --gold: #b08d3f;
  --shadow: 0 1px 2px rgba(43, 39, 36, .06), 0 6px 20px rgba(43, 39, 36, .07);
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  --kai: "Kaiti SC", "STKaiti", "KaiTi", var(--serif);
  --tabbar-h: 62px;
  --r: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1a1917;
    --paper-2: #23211e;
    --paper-sunk: #141311;
    --ink: #ede7dc;
    --ink-2: #b8b0a3;
    --ink-3: #8a8175;
    --line: #38342e;
    --cinnabar: #e0705f;
    --cinnabar-soft: #3d2723;
    --jade: #7fb8a2;
    --jade-soft: #22302a;
    --gold: #cfae63;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

body {
  -webkit-touch-callout: none;
  -webkit-user-select: none; user-select: none;
}

#app { display: flex; flex-direction: column; height: 100%; }

#view {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: max(env(safe-area-inset-top), 12px) 0 24px;
}

.wrap { max-width: 780px; margin: 0 auto; padding: 0 20px; }
.wrap-wide { max-width: 1060px; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部标题 ---------- */
.page-head { padding: 8px 0 18px; }
.page-title { font-family: var(--serif); font-size: 30px; font-weight: 600; margin: 0; letter-spacing: 2px; }
.page-sub { color: var(--ink-3); font-size: 14px; margin-top: 6px; }

.nav-back {
  display: inline-flex; align-items: center; gap: 6px;
  border: 0; background: none; color: var(--ink-2);
  font-size: 16px; padding: 8px 4px 8px 0; margin-bottom: 4px;
  font-family: var(--sans); cursor: pointer;
}
.nav-back::before { content: "‹"; font-size: 26px; line-height: 1; }

/* ---------- 分段控件 ---------- */
.seg {
  display: flex; gap: 4px; padding: 4px;
  background: var(--paper-sunk); border-radius: 12px; margin-bottom: 20px;
}
.seg button {
  flex: 1; border: 0; background: none; border-radius: 9px;
  padding: 10px 8px; font-size: 15px; color: var(--ink-2);
  font-family: var(--sans); cursor: pointer; transition: .16s;
}
.seg button.on { background: var(--paper-2); color: var(--ink); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,.08); }

/* ---------- 册次选择：一行 chip ----------
   选中态用墨色反底，深浅两种主题下自动拿到高对比，不用各写一套 */
.chips { display: flex; gap: 9px; flex-wrap: wrap; margin-bottom: 22px; }
.chip {
  border: 1px solid var(--line); background: transparent; color: var(--ink-2);
  border-radius: 999px; padding: 9px 19px; font-size: 15px;
  font-family: var(--sans); letter-spacing: .5px; cursor: pointer;
  transition: background .18s, color .18s, border-color .18s, transform .12s;
}
.chip:active { transform: scale(.95); }
.chip.on {
  background: var(--ink); border-color: var(--ink);
  color: var(--paper); font-weight: 600;
}

/* ---------- 诗文卡片 ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }

.card {
  display: block; text-decoration: none; color: inherit;
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--r); padding: 18px 18px 14px;
  box-shadow: var(--shadow); position: relative; overflow: hidden;
  transition: transform .12s;
}
.card:active { transform: scale(.985); }
.card-title { font-family: var(--serif); font-size: 21px; font-weight: 600; letter-spacing: 1px; }
.card-meta { color: var(--ink-3); font-size: 13px; margin-top: 5px; }
.card-first {
  font-family: var(--kai); color: var(--ink-2); font-size: 15px;
  margin-top: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-stars { margin-top: 10px; font-size: 13px; letter-spacing: 3px; color: var(--gold); min-height: 18px; }
.card-stars .off { color: var(--line); }

.tag {
  display: inline-block; font-size: 11px; padding: 2px 7px; border-radius: 6px;
  background: var(--jade-soft); color: var(--jade); margin-left: 6px; vertical-align: 2px;
  font-weight: 600;
}
.tag.wen { background: var(--cinnabar-soft); color: var(--cinnabar); }
.tag.modern { background: rgba(176,141,63,.16); color: var(--gold); }
.tag.new { background: var(--cinnabar); color: #fff; }
.tag.legacy { background: var(--paper-sunk); color: var(--ink-3); }
.card.legacy .card-title, .card.legacy .card-meta, .card.legacy .card-first { opacity: .62; }

.group-label {
  font-size: 13px; color: var(--ink-3); margin: 22px 0 10px;
  letter-spacing: 1px; display: flex; align-items: center; gap: 10px;
}
.group-label::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* ---------- 意境配图 ---------- */
.illust {
  display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover;
  border-radius: var(--r); box-shadow: var(--shadow);
  background: var(--paper-sunk); margin-bottom: 16px;
  opacity: 0; transition: opacity .5s ease;
  cursor: zoom-in;
}
.illust.ready { opacity: 1; }
.illust.zoom {
  position: fixed; inset: 0; z-index: 60;
  width: 100vw; height: 100vh; aspect-ratio: auto;
  object-fit: contain; border-radius: 0; margin: 0;
  background: rgba(20, 18, 16, .96); cursor: zoom-out;
}
body.zooming { overflow: hidden; }
body.zooming #tabbar { display: none; }

/* 卡片上的小图，让书目一眼能看出意境 */
.card-thumb {
  display: block; width: calc(100% + 36px); margin: -18px -18px 12px;
  aspect-ratio: 16 / 9; object-fit: cover;
  border-radius: var(--r) var(--r) 0 0;
  background: var(--paper-sunk);
}

/* ---------- 诗文详情 ---------- */
.poem-head { text-align: center; padding: 6px 0 18px; }
.poem-title { font-family: var(--serif); font-size: 32px; font-weight: 600; letter-spacing: 3px; margin: 0; }
.poem-author { color: var(--ink-3); font-size: 15px; margin-top: 8px; letter-spacing: 1px; }

.poem-body {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r);
  padding: 26px 20px; box-shadow: var(--shadow); text-align: center;
}
.poem-body.wenyan { text-align: left; padding: 24px 22px; }

.pline {
  display: block; margin: 0 0 14px; padding: 6px 4px; border-radius: 10px;
  cursor: pointer; transition: background .15s;
}
.pline:last-child { margin-bottom: 0; }
.pline.playing { background: var(--jade-soft); }

.pchar {
  display: inline-flex; flex-direction: column; align-items: center;
  vertical-align: bottom; margin: 0 1px;
}
.pchar .py {
  font-family: var(--sans); font-size: 12px; color: var(--jade);
  line-height: 1.4; height: 17px; letter-spacing: 0;
}
.pchar .zi { font-family: var(--serif); font-size: 30px; line-height: 1.35; letter-spacing: 0; }
.pchar.punct .zi { color: var(--ink-3); }

.no-pinyin .pchar .py { display: none; }
.poem-body.wenyan .pchar .zi { font-size: 25px; }

/* 播放条 */
.player-bar {
  display: flex; align-items: center; gap: 10px; justify-content: center;
  margin: 18px 0 4px; flex-wrap: wrap;
}
.btn {
  border: 1px solid var(--line); background: var(--paper-2); color: var(--ink);
  border-radius: 999px; padding: 11px 20px; font-size: 15px; font-family: var(--sans);
  cursor: pointer; display: inline-flex; align-items: center; gap: 7px; transition: .14s;
}
.btn:active { transform: scale(.96); }
.btn.primary { background: var(--cinnabar); border-color: var(--cinnabar); color: #fff; font-weight: 600; }
.btn.jade { background: var(--jade); border-color: var(--jade); color: #fff; font-weight: 600; }
.btn.on { background: var(--jade-soft); border-color: var(--jade); color: var(--jade); font-weight: 600; }
.btn:disabled { opacity: .45; }
.btn.big { padding: 15px 30px; font-size: 17px; }

/* 折叠区块 */
.panel { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r); margin-top: 14px; overflow: hidden; }
.panel > summary {
  padding: 15px 18px; font-size: 16px; font-weight: 600; cursor: pointer;
  list-style: none; display: flex; align-items: center; justify-content: space-between;
}
.panel > summary::-webkit-details-marker { display: none; }
.panel > summary::after { content: "＋"; color: var(--ink-3); font-weight: 400; font-size: 18px; }
.panel[open] > summary::after { content: "－"; }
.panel-body { padding: 0 18px 18px; font-size: 16px; line-height: 1.85; color: var(--ink-2); }

.note-item { padding: 9px 0; border-top: 1px dashed var(--line); font-size: 15.5px; line-height: 1.75; }
.note-item:first-child { border-top: 0; }
.note-word {
  font-family: var(--serif); font-weight: 600; color: var(--cinnabar);
  font-size: 17px; margin-right: 8px;
}
.famous {
  font-family: var(--kai); font-size: 19px; color: var(--ink);
  background: linear-gradient(transparent 62%, var(--cinnabar-soft) 62%);
  display: inline; line-height: 2.1;
}

/* ---------- 练习 ---------- */
.mode-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.mode-card {
  text-align: left; border: 1px solid var(--line); background: var(--paper-2);
  border-radius: var(--r); padding: 20px; box-shadow: var(--shadow);
  cursor: pointer; font-family: var(--sans); color: inherit; transition: transform .12s;
}
.mode-card:active { transform: scale(.985); }
.mode-name { font-size: 19px; font-weight: 600; font-family: var(--serif); letter-spacing: 1px; }
.mode-desc { color: var(--ink-3); font-size: 13.5px; margin-top: 7px; line-height: 1.6; }
.mode-ico { font-size: 26px; font-family: var(--serif); color: var(--cinnabar); margin-bottom: 8px; display: block; }

.practice-top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 14px;
}
.progress-track { flex: 1; height: 7px; background: var(--paper-sunk); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: var(--jade); transition: width .3s; }
.round-label { font-size: 13px; color: var(--ink-3); white-space: nowrap; }

/* 填空 */
.blank {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 32px; height: 40px; margin: 0 1px; padding: 0 2px;
  border-bottom: 2.5px solid var(--cinnabar); border-radius: 3px;
  font-family: var(--serif); font-size: 30px; line-height: 1;
  background: var(--cinnabar-soft); color: var(--cinnabar); vertical-align: bottom;
}
.blank.filled { background: transparent; color: var(--ink); border-bottom-color: var(--jade); }
.blank.wrong { background: var(--cinnabar); color: #fff; animation: shake .3s; }
@keyframes shake { 25% { transform: translateX(-4px);} 75% { transform: translateX(4px);} }

.choices { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 22px; }
.choice {
  min-width: 62px; height: 62px; padding: 0 10px;
  border: 1px solid var(--line); background: var(--paper-2); border-radius: 14px;
  font-family: var(--serif); font-size: 30px; color: var(--ink);
  cursor: pointer; box-shadow: var(--shadow); transition: transform .12s;
}
.choice:active { transform: scale(.93); }
.choice.used { opacity: .25; pointer-events: none; }

/* 排序 */
.sort-slots { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.slot {
  min-height: 58px; border: 2px dashed var(--line); border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--kai); font-size: 22px; color: var(--ink);
  background: var(--paper-sunk); padding: 8px 12px; text-align: center;
}
.slot.filled { border-style: solid; border-color: var(--jade); background: var(--paper-2); }
.slot.wrong { border-color: var(--cinnabar); background: var(--cinnabar-soft); }
.sort-pool { display: flex; flex-direction: column; gap: 10px; }
.sort-chip {
  border: 1px solid var(--line); background: var(--paper-2); border-radius: 12px;
  padding: 14px 12px; font-family: var(--kai); font-size: 22px; color: var(--ink);
  cursor: pointer; box-shadow: var(--shadow); text-align: center;
}
.sort-chip:active { transform: scale(.98); }
.sort-chip.used { display: none; }

/* 跟读 */
.echo-line {
  font-family: var(--kai); font-size: 30px; text-align: center;
  padding: 30px 16px; line-height: 1.9; min-height: 120px;
  display: flex; align-items: center; justify-content: center;
}
.rec-dot {
  width: 12px; height: 12px; border-radius: 50%; background: var(--cinnabar);
  display: inline-block; animation: pulse 1s infinite;
}
@keyframes pulse { 50% { opacity: .25; } }

/* 背诵检查 */
.btn.talk {
  min-width: 230px; padding: 20px 34px; font-size: 19px;
  touch-action: none; user-select: none;
}
.btn.talk.rec {
  background: var(--jade); border-color: var(--jade);
  animation: talking 1.1s ease-in-out infinite;
}
@keyframes talking { 50% { box-shadow: 0 0 0 12px rgba(61, 107, 92, .18); } }

.meter {
  height: 6px; width: min(320px, 70%); margin: 14px auto 0;
  background: var(--paper-sunk); border-radius: 4px; overflow: hidden;
}
.meter-fill { height: 100%; width: 0; background: var(--jade); transition: width .08s linear; }

.echo-line.revealed { color: var(--cinnabar); }
.echo-line.done { color: var(--ink); }

/* 默写 */
.dictation-input {
  width: 100%; min-height: 170px; padding: 16px;
  border: 1px solid var(--line); border-radius: var(--r); background: var(--paper-2);
  font-family: var(--kai); font-size: 22px; line-height: 2; color: var(--ink);
  -webkit-user-select: text; user-select: text; resize: vertical;
}
.dictation-input:focus { outline: 2px solid var(--jade); border-color: transparent; }
.diff { font-family: var(--kai); font-size: 24px; line-height: 2.1; letter-spacing: 1px; }
.diff .ok { color: var(--ink); }
.diff .bad { color: var(--cinnabar); background: var(--cinnabar-soft); border-radius: 4px; padding: 0 2px; }
.diff .miss { color: var(--cinnabar); text-decoration: underline wavy var(--cinnabar); }
.diff .sep { color: var(--ink-3); margin-right: 2px; }
/* 句号处换行，默写结果按句子读得清 */
.diff .sep::after { content: ""; display: inline; }

/* 结果 */
.result-card {
  text-align: center; background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--r); padding: 30px 22px; box-shadow: var(--shadow); margin-top: 10px;
}
.result-score { font-family: var(--serif); font-size: 52px; font-weight: 600; color: var(--jade); }
.result-score.low { color: var(--cinnabar); }
.result-msg { font-size: 17px; color: var(--ink-2); margin-top: 10px; line-height: 1.7; }
.result-actions { display: flex; gap: 12px; justify-content: center; margin-top: 24px; flex-wrap: wrap; }

.hint-bar { text-align: center; color: var(--ink-3); font-size: 14px; margin-top: 16px; line-height: 1.7; }

/* ---------- 名句 ---------- */
.saying-group { margin-bottom: 26px; }
.saying-item { padding: 14px 0; border-top: 1px dashed var(--line); }
.saying-item:first-child { border-top: 0; }
.saying-text { font-family: var(--kai); font-size: 21px; line-height: 1.7; }
.saying-src { color: var(--gold); font-size: 13px; margin-left: 8px; font-family: var(--sans); }
.saying-exp { color: var(--ink-2); font-size: 14.5px; line-height: 1.75; margin-top: 6px; }

/* ---------- 我的 ---------- */
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 20px; }
.stat {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r);
  padding: 18px 12px; text-align: center; box-shadow: var(--shadow);
}
.stat-num { font-family: var(--serif); font-size: 32px; font-weight: 600; color: var(--jade); }
.stat-label { font-size: 13px; color: var(--ink-3); margin-top: 4px; }

.list-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 16px; background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 12px; margin-bottom: 8px; font-size: 15px; text-decoration: none; color: inherit;
}
.list-row .stars { color: var(--gold); letter-spacing: 2px; font-size: 13px; }
.list-row .stars .off { color: var(--line); }

.empty { text-align: center; color: var(--ink-3); padding: 60px 20px; font-size: 15px; line-height: 1.8; }

/* ---------- 底部标签栏 ---------- */
#tabbar {
  display: flex; border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  padding-bottom: env(safe-area-inset-bottom);
  flex: 0 0 auto;
}
.tab {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: var(--tabbar-h); text-decoration: none; color: var(--ink-3); gap: 3px;
}
.tab-ico {
  font-family: var(--serif); font-size: 19px; width: 30px; height: 30px; line-height: 30px;
  border-radius: 9px; transition: .16s;
}
.tab-label { font-size: 11px; }
.tab.on { color: var(--cinnabar); }
.tab.on .tab-ico { background: var(--cinnabar-soft); }

/* 练习进行中隐藏标签栏，避免误触 */
body.focus-mode #tabbar { display: none; }

/* 提示气泡 */
#toast {
  position: fixed; left: 50%; bottom: calc(var(--tabbar-h) + 26px); transform: translateX(-50%);
  background: var(--ink); color: var(--paper); padding: 11px 20px; border-radius: 999px;
  font-size: 15px; opacity: 0; pointer-events: none; transition: opacity .22s; z-index: 50;
  max-width: 82vw; text-align: center;
}
#toast.show { opacity: .95; }

/* 竖屏窄一点时缩小诗文字号 */
@media (max-width: 500px) {
  .pchar .zi { font-size: 26px; }
  .poem-title { font-size: 27px; }
  .blank { min-width: 28px; height: 35px; font-size: 26px; }
  .choice { min-width: 54px; height: 54px; font-size: 26px; }
}