/* JLPT 合格計畫 — 全站樣式 */
:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --ink: #2b2b33;
  --ink-soft: #6b6b76;
  --line: #e4e2db;
  --primary: #b03a48;        /* 朱色 */
  --primary-soft: #f7e8ea;
  --accent: #2f6f6a;         /* 松葉色 */
  --accent-soft: #e6f0ef;
  --warn: #c77d1e;
  --good: #3d8b57;
  --bad: #c04545;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(40, 40, 50, .08), 0 4px 14px rgba(40, 40, 50, .05);
}

* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans TC", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Microsoft JhengHei", Meiryo, sans-serif;
  line-height: 1.65;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.5rem; margin: .2rem 0 .6rem; }
h3 { margin: 0 0 .6rem; font-size: 1.05rem; }
h4 { margin: 1rem 0 .4rem; }

/* ---- 導覽 ---- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1rem;
  padding: .55rem 1.2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 4px rgba(0,0,0,.04);
  flex-wrap: wrap;
}
.nav-brand { font-weight: 700; color: var(--primary); white-space: nowrap; }
.nav-links { display: flex; gap: .1rem; flex: 1; flex-wrap: wrap; }
.nav-link {
  padding: .35rem .6rem; border-radius: 8px;
  color: var(--ink-soft); font-size: .92rem; white-space: nowrap;
}
.nav-link:hover { background: var(--bg); text-decoration: none; }
.nav-link.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.nav-controls { display: flex; gap: .5rem; align-items: center; }
.nav-controls select {
  padding: .3rem .5rem; border: 1px solid var(--line); border-radius: 8px;
  font-weight: 700; color: var(--primary); background: var(--surface);
}

/* ---- 版面 ---- */
.main { max-width: 1080px; margin: 0 auto; padding: 1.2rem 1rem 4rem; }
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1rem 1.2rem; margin: .8rem 0;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: .8rem; }
.grid-2 .card, .grid-4 .card { margin: 0; }
.grid-2, .grid-4 { margin: .8rem 0; }
.section-title { margin-top: 1.4rem; }

/* ---- 按鈕與表單 ---- */
.btn {
  display: inline-block; padding: .5rem 1rem;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface); color: var(--ink);
  font-size: .95rem; cursor: pointer; transition: all .15s;
  text-decoration: none;
}
.btn:hover { border-color: var(--ink-soft); text-decoration: none; transform: translateY(-1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: #9a3340; }
.btn-danger { background: #fff; border-color: var(--bad); color: var(--bad); }
.btn-ghost { border-color: transparent; background: transparent; color: var(--ink-soft); }
.btn-sm { padding: .3rem .7rem; font-size: .85rem; }
.btn-sprint { background: var(--warn); border-color: var(--warn); color: #fff; }
.btn-file { position: relative; overflow: hidden; }
select, input[type="search"], input[type="date"] {
  padding: .45rem .6rem; border: 1px solid var(--line); border-radius: 8px;
  font-size: .95rem; background: var(--surface); color: var(--ink);
  font-family: inherit;
}
.form-row { display: flex; gap: 1rem; flex-wrap: wrap; margin: .6rem 0; }
.form-row label, .form-col label { display: flex; flex-direction: column; gap: .25rem; font-size: .88rem; color: var(--ink-soft); }
.form-col { display: flex; flex-direction: column; gap: .8rem; margin: .6rem 0; }
.filter-bar { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
.filter-bar input[type="search"] { flex: 1; min-width: 200px; }

/* ---- chips 與 badge ---- */
.chip {
  display: inline-block; padding: .1rem .55rem;
  background: var(--accent-soft); color: var(--accent);
  border-radius: 999px; font-size: .82rem; font-weight: 600;
  vertical-align: middle;
}
.chip-sm { font-size: .74rem; padding: .05rem .45rem; }
.chip-tag { background: var(--primary-soft); color: var(--primary); }
.chip-diff-3 { background: #f3e3e3; color: var(--bad); }
.badge { font-size: .72rem; padding: .1rem .45rem; border-radius: 6px; vertical-align: middle; }
.badge-learning { background: var(--accent-soft); color: var(--accent); }
.badge-known { background: #eee; color: var(--ink-soft); }

/* ---- 統計卡 ---- */
.stat-card { text-align: center; padding: .9rem .5rem; }
.stat-label { font-size: .82rem; color: var(--ink-soft); }
.stat-value { font-size: 1.9rem; font-weight: 700; color: var(--primary); line-height: 1.2; }
.stat-unit { font-size: .85rem; color: var(--ink-soft); margin-left: .15rem; font-weight: 400; }
.stat-sub { font-size: .8rem; color: var(--ink-soft); }
.big-num { font-size: 1.6em; font-weight: 800; color: var(--primary); }

.progress-row { margin: .5rem 0; font-size: .9rem; }
.bar { height: 8px; background: var(--bg); border-radius: 99px; overflow: hidden; margin-top: .25rem; }
.bar-fill { height: 100%; background: var(--accent); border-radius: 99px; transition: width .3s; }
.bar-good { background: var(--good); }
.bar-mid { background: var(--warn); }
.bar-bad { background: var(--bad); }

.quick-actions { display: flex; gap: .6rem; flex-wrap: wrap; }
.data-counts { display: flex; gap: 1.4rem; flex-wrap: wrap; font-size: .95rem; }
.data-counts strong { color: var(--primary); font-size: 1.2rem; }
.weak-list { margin: .3rem 0 .8rem; padding-left: 1.2rem; }
.tips-list { margin: .3rem 0; padding-left: 1.2rem; }
.tips-list li { margin: .35rem 0; }
.hint-text { color: var(--ink-soft); font-size: .88rem; }
.empty-state { text-align: center; padding: 2.5rem 1rem; }

/* ---- 單字 ---- */
.vocab-list { display: flex; flex-direction: column; }
.vocab-row {
  padding: .55rem .3rem; border-bottom: 1px solid var(--line);
  cursor: pointer; display: flex; flex-direction: column; gap: .1rem;
}
.vocab-row:hover { background: var(--bg); }
.vocab-row:last-child { border-bottom: none; }
.vocab-main { display: flex; align-items: baseline; gap: .6rem; }
.vocab-word { font-size: 1.15rem; font-weight: 700; }
.vocab-reading { color: var(--accent); font-size: .9rem; }
.vocab-sub { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; font-size: .88rem; }
.vocab-meaning { color: var(--ink-soft); }
.pager { display: flex; justify-content: center; align-items: center; gap: 1rem; margin-top: .8rem; }

.vocab-detail .vd-word { font-size: 2.2rem; font-weight: 800; }
.vocab-detail .vd-reading { color: var(--accent); font-size: 1.15rem; margin-bottom: .3rem; }
.vocab-detail .vd-meaning { font-size: 1.1rem; margin: .5rem 0; }
.vd-meta { margin: .3rem 0; }

/* ---- 文法 ---- */
.grammar-row { cursor: pointer; padding: .8rem 1.1rem; }
.grammar-row:hover { border-color: var(--accent); }
.grammar-pattern { font-size: 1.1rem; font-weight: 700; display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.grammar-meaning { color: var(--ink-soft); font-size: .92rem; }
.gd-pattern { font-size: 1.6rem; font-weight: 800; }
.gd-meaning { font-size: 1.05rem; color: var(--primary); margin: .3rem 0 .6rem; }
.gd-explanation { margin: .6rem 0; }

/* ---- 漢字 ---- */
.kanji-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(86px, 1fr));
  gap: .6rem; margin: .8rem 0;
}
.kanji-cell {
  position: relative;
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
  text-align: center; padding: .6rem .2rem .4rem; cursor: pointer; transition: all .15s;
}
.kanji-cell:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow); }
.kanji-char { font-size: 1.9rem; font-weight: 700; line-height: 1.2; }
.kanji-hint { font-size: .72rem; color: var(--ink-soft); }
.kanji-dot { position: absolute; top: 6px; right: 8px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.kd-char { font-size: 3.4rem; font-weight: 800; line-height: 1.2; }
.kd-meaning { font-size: 1.05rem; color: var(--primary); margin-bottom: .5rem; }
.kd-readings { margin: .5rem 0; }

/* ---- 易混淆 ---- */
.cf-card { padding-bottom: .8rem; }
.cf-title { display: flex; gap: .5rem; align-items: center; margin-bottom: .5rem; flex-wrap: wrap; }
.cf-text { font-weight: 700; font-size: 1.05rem; white-space: nowrap; }
.cf-example { color: var(--ink-soft); font-size: .88rem; }

/* ---- 表格 ---- */
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th { text-align: left; color: var(--ink-soft); font-weight: 600; font-size: .82rem; }
.table th, .table td { padding: .4rem .5rem; border-bottom: 1px solid var(--line); }
.table tr:last-child td { border-bottom: none; }

/* ---- 例句與註記 ---- */
.example-box {
  background: var(--accent-soft); border-radius: 10px;
  padding: .6rem .8rem; margin: .5rem 0;
}
.ex-jp { font-size: 1.05rem; }
.ex-zh { color: var(--ink-soft); font-size: .88rem; margin-top: .15rem; }
.note-box {
  background: #faf6ec; border-left: 3px solid var(--warn);
  border-radius: 0 8px 8px 0; padding: .5rem .8rem; margin: .5rem 0; font-size: .92rem;
}
ruby rt { font-size: .55em; color: var(--accent); }
.no-furigana ruby rt { display: none; }
.no-furigana .furi-el { visibility: hidden; }

/* ---- 測驗 ---- */
.quiz-header {
  display: flex; justify-content: space-between; align-items: center;
  margin: .5rem 0; gap: .8rem; flex-wrap: wrap;
}
.quiz-title { font-weight: 700; }
.quiz-progress { color: var(--ink-soft); font-size: .88rem; margin-left: .6rem; }
.quiz-header-right { display: flex; gap: .5rem; align-items: center; }
.quiz-timer {
  font-variant-numeric: tabular-nums; font-weight: 700; font-size: 1.1rem;
  background: var(--surface); border: 1px solid var(--line);
  padding: .2rem .7rem; border-radius: 8px;
}
.timer-warn { color: var(--bad); border-color: var(--bad); }

.quiz-card { padding: 1.2rem 1.4rem; }
.q-meta { display: flex; gap: .4rem; margin-bottom: .7rem; }
.q-passage {
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
  padding: .8rem 1rem; margin-bottom: .8rem; max-height: 300px; overflow-y: auto;
  white-space: pre-wrap; font-size: .98rem;
}
.q-stem { font-size: 1.12rem; margin-bottom: 1rem; }
.q-target { border-bottom: 2px solid var(--primary); font-weight: 600; padding-bottom: 1px; }

.q-choices { display: flex; flex-direction: column; gap: .5rem; }
.choice {
  display: flex; align-items: center; gap: .7rem; text-align: left;
  padding: .6rem .8rem; border: 1.5px solid var(--line); border-radius: 10px;
  background: var(--surface); font-size: 1rem; cursor: pointer; transition: all .12s;
  font-family: inherit; color: var(--ink);
}
.choice:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }
.choice-num {
  flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg); display: flex; align-items: center; justify-content: center;
  font-size: .82rem; font-weight: 700; color: var(--ink-soft);
}
.choice-selected { border-color: var(--primary); background: var(--primary-soft); }
.choice-selected .choice-num { background: var(--primary); color: #fff; }
.choice-correct { border-color: var(--good); background: #e9f4ed; }
.choice-correct .choice-num { background: var(--good); color: #fff; }
.choice-wrong { border-color: var(--bad); background: #f8e9e9; }
.choice-wrong .choice-num { background: var(--bad); color: #fff; }
.choice-dim { opacity: .55; }

.q-feedback { margin-top: 1rem; border-radius: 10px; padding: .8rem 1rem; }
.fb-correct { background: #e9f4ed; border: 1px solid #bfdccb; }
.fb-wrong { background: #f8e9e9; border: 1px solid #e4c2c2; }
.fb-verdict { font-weight: 700; margin-bottom: .3rem; }
.fb-explanation { font-size: .95rem; white-space: pre-wrap; }

.quiz-nav { display: flex; gap: .6rem; margin: 1rem 0; align-items: center; flex-wrap: wrap; }
.quiz-palette { display: flex; flex-wrap: wrap; gap: .3rem; margin: .6rem 0 2rem; }
.pal {
  width: 34px; height: 30px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--surface); cursor: pointer; font-size: .8rem; color: var(--ink-soft);
}
.pal-done { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.pal-current { outline: 2px solid var(--primary); }
.pal-flag { position: relative; }
.pal-flag::after { content: '★'; position: absolute; top: -7px; right: -2px; font-size: .6rem; color: var(--warn); }

/* ---- 成績 ---- */
.result-card { text-align: center; padding: 1.6rem; }
.result-score { font-size: 2.6rem; font-weight: 800; color: var(--primary); }
.result-pct { font-size: 1.1rem; color: var(--ink-soft); font-weight: 400; }
.result-excellent .result-score { color: var(--good); }
.result-poor .result-score { color: var(--bad); }
.est-box {
  background: var(--bg); border-radius: 10px; padding: .8rem 1rem;
  margin: .8rem auto 0; max-width: 460px; text-align: left; font-size: .92rem;
}
.est-box p { margin: .25rem 0; }
.wrong-item { border-bottom: 1px solid var(--line); padding: .45rem 0; }
.wrong-item summary { cursor: pointer; font-size: .95rem; }
.wrong-detail { padding: .6rem 0 .3rem .5rem; }
.wrong-choices { font-size: .92rem; }
.wrong-choices .wc-correct { color: var(--good); font-weight: 700; }
.wrong-choices .wc-user:not(.wc-correct) { color: var(--bad); }

/* ---- 記憶卡 ---- */
.flash-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  box-shadow: var(--shadow); min-height: 300px; margin: 1rem 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: .6rem; padding: 1.6rem; cursor: pointer; text-align: center;
}
.flash-word { font-size: 2.6rem; font-weight: 800; }
.flash-word-sm { font-size: 1.8rem; }
.flash-pos { color: var(--ink-soft); }
.flash-hint { color: var(--ink-soft); font-size: .85rem; }
.flash-reading { font-size: 1.25rem; color: var(--accent); font-weight: 600; }
.flash-meaning { font-size: 1.15rem; }
.flash-back { width: 100%; max-width: 560px; }
.flash-back .example-box { text-align: left; }

/* ---- 複習盒 ---- */
.box-dist { display: flex; gap: 1rem; align-items: flex-end; padding: .5rem 0; }
.box-col { text-align: center; flex: 1; }
.box-bar { background: var(--accent); border-radius: 6px 6px 0 0; margin: 0 auto; width: 60%; min-height: 4px; }
.box-label { font-size: .78rem; color: var(--ink-soft); margin-top: .2rem; }
.box-n { font-weight: 700; font-size: .9rem; }

/* ---- 活動圖 ---- */
.activity-chart { display: flex; gap: .35rem; align-items: flex-end; height: 130px; padding-top: .5rem; }
.act-col { flex: 1; text-align: center; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; }
.act-bar { background: var(--primary); opacity: .75; border-radius: 4px 4px 0 0; }
.act-label { font-size: .68rem; color: var(--ink-soft); margin-top: .2rem; }
.stat-bar-row { display: grid; grid-template-columns: 110px 1fr 130px; gap: .7rem; align-items: center; margin: .45rem 0; font-size: .88rem; }
.stat-bar-row .bar { margin-top: 0; }
.stat-bar-val { text-align: right; color: var(--ink-soft); }

/* ---- 衝刺 ---- */
.sprint-banner { border-left: 4px solid var(--warn); background: #fdf9f0; }
.sprint-count { font-size: 1.05rem; }
.mode-card { display: flex; flex-direction: column; }
.mode-card p { flex: 1; font-size: .92rem; color: var(--ink-soft); margin: .3rem 0 .8rem; }
.mode-card .btn { align-self: flex-start; margin-right: .4rem; }
.mode-card-hl { border-color: var(--primary); border-width: 1.5px; }

/* ---- modal ---- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(30, 28, 26, .45);
  display: flex; align-items: center; justify-content: center; z-index: 100; padding: 1rem;
}
.modal {
  background: var(--surface); border-radius: 16px; max-width: 520px; width: 100%;
  max-height: 86vh; overflow-y: auto; position: relative; padding: 1.4rem 1.6rem;
  box-shadow: 0 10px 40px rgba(0,0,0,.2);
}
.modal-wide { max-width: 680px; }
.modal-close {
  position: absolute; top: .6rem; right: .8rem; border: none; background: none;
  font-size: 1.5rem; color: var(--ink-soft); cursor: pointer; line-height: 1;
}
body.modal-open { overflow: hidden; }

/* ---- 響應式 ---- */
@media (max-width: 860px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .stat-bar-row { grid-template-columns: 90px 1fr 90px; }
}
@media (max-width: 560px) {
  html { font-size: 15px; }
  .nav { padding: .5rem .7rem; gap: .5rem; }
  .nav-links { order: 3; width: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .main { padding: .8rem .7rem 3rem; }
  .grid-4 { grid-template-columns: 1fr 1fr; gap: .5rem; }
  .quiz-card { padding: .9rem; }
  .flash-word { font-size: 2rem; }
}