/* 英语短语学习 · 全局样式（移动优先，深浅色自适应） */
:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #1c2333;
  --muted: #6b7280;
  --border: #e3e7ef;
  --line-soft: #c9d1df;
  --primary: #2563eb;
  --primary-weak: #dbeafe;
  --ok: #059669;
  --ok-weak: #d1fae5;
  --danger: #dc2626;
  --danger-weak: #fee2e2;
  --warn: #d97706;
  --warn-weak: #fef3c7;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08);
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10141c;
    --card: #1a2130;
    --text: #e5e9f2;
    --muted: #8b93a7;
    --border: #2a3346;
    --line-soft: #3d4a63;
    --primary: #4d8dff;
    --primary-weak: #1e3358;
    --ok: #34d399;
    --ok-weak: #123528;
    --danger: #f87171;
    --danger-weak: #451a1a;
    --warn: #fbbf24;
    --warn-weak: #42350e;
    --shadow: 0 1px 3px rgba(0, 0, 0, .4);
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { font-size: 16px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.55;
}
#app { max-width: 720px; margin: 0 auto; padding: 12px 14px calc(70px + env(safe-area-inset-bottom)); }

/* 顶部标题 */
.page-title { font-size: 1.15rem; font-weight: 700; margin: 8px 2px 12px; display: flex; align-items: baseline; gap: 8px; }
.page-title small { color: var(--muted); font-weight: 400; font-size: .8rem; }

/* 卡片 */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  margin-bottom: 12px;
}

/* 按钮 */
button {
  font: inherit; border: none; border-radius: 10px; cursor: pointer;
  padding: 9px 16px; background: var(--primary); color: #fff;
}
button:active { opacity: .82; }
button:disabled { opacity: .45; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--primary); border: 1px solid var(--border); }
.btn-soft { background: var(--primary-weak); color: var(--primary); }
.btn-danger { background: var(--danger); }
.btn-danger-ghost { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
.btn-ok { background: var(--ok); }
.btn-block { display: block; width: 100%; padding: 12px; font-size: 1rem; }
.btn-sm { padding: 5px 10px; font-size: .82rem; border-radius: 8px; }
.mic-on { border: 1px solid var(--danger); color: var(--danger); animation: mic-pulse 1.2s infinite; }
@keyframes mic-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }
.btn-row { display: flex; gap: 10px; }
.btn-row > button { flex: 1; }

/* 表单 */
input[type="text"], input[type="password"], input[type="number"], textarea, select {
  width: 100%; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 9px 12px; outline: none;
}
input:focus, textarea:focus { border-color: var(--primary); }
textarea { resize: vertical; min-height: 84px; }
label.field { display: block; margin: 10px 0 4px; font-size: .85rem; color: var(--muted); }
.form-help { font-size: .78rem; color: var(--muted); margin-top: 3px; }

/* 列表行 */
.row {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 4px; border-bottom: 1px solid var(--border);
}
.row:last-child { border-bottom: none; }
.row .grow { flex: 1; min-width: 0; }
.row .sub { color: var(--muted); font-size: .82rem; }

/* 徽标 / 标签 */
.badge {
  display: inline-block; font-size: .72rem; padding: 1px 8px; border-radius: 999px;
  background: var(--primary-weak); color: var(--primary); vertical-align: 2px;
}
.badge.ok { background: var(--ok-weak); color: var(--ok); }
.badge.danger { background: var(--danger-weak); color: var(--danger); }
.badge.warn { background: var(--warn-weak); color: var(--warn); }
.badge.gray { background: var(--bg); color: var(--muted); }

/* 底部导航 */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  display: flex; justify-content: center;
  background: var(--card); border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar-inner { display: flex; width: 100%; max-width: 720px; }
.tabbar a {
  flex: 1; text-align: center; padding: 8px 0 6px; text-decoration: none;
  color: var(--muted); font-size: .72rem;
}
.tabbar a .icon { display: block; font-size: 1.25rem; line-height: 1.2; }
.tabbar a.active { color: var(--primary); font-weight: 600; }

/* toast */
.toast-wrap { position: fixed; top: 14px; left: 0; right: 0; z-index: 99; display: flex; flex-direction: column; align-items: center; gap: 8px; pointer-events: none; }
.toast {
  background: rgba(28, 35, 51, .92); color: #fff; font-size: .88rem;
  padding: 9px 18px; border-radius: 999px; max-width: 88%;
}
@media (prefers-color-scheme: dark) { .toast { background: rgba(229, 233, 242, .95); color: #10141c; } }

/* 横幅提醒 */
.banner { display: flex; gap: 8px; align-items: center; padding: 10px 12px; border-radius: 10px; margin-bottom: 12px; font-size: .85rem; }
.banner.warn { background: var(--warn-weak); color: var(--warn); }
.banner.danger { background: var(--danger-weak); color: var(--danger); }
.banner .grow { flex: 1; }

/* 弹层 */
.modal-mask {
  position: fixed; inset: 0; z-index: 80; background: rgba(10, 14, 22, .5);
  display: flex; align-items: flex-end; justify-content: center;
}
.modal {
  background: var(--card); width: 100%; max-width: 720px;
  border-radius: 16px 16px 0 0; padding: 16px 16px calc(16px + env(safe-area-inset-bottom));
  max-height: 86vh; overflow-y: auto;
}
.modal-title { font-weight: 700; margin-bottom: 6px; }
.modal-actions { display: flex; gap: 10px; margin-top: 14px; }
.modal-actions button { flex: 1; }

/* 词库 */
.search-box { margin-bottom: 12px; }
.cat-title { font-size: .85rem; color: var(--muted); margin: 14px 2px 6px; }
.verb-row { cursor: pointer; padding: 10px 0; }
.verb-row.open { background: linear-gradient(90deg, var(--primary-weak), transparent 70%); margin: 0 -12px; padding: 10px 12px; }
.verb-line { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.verb-name { font-size: 1.1rem; letter-spacing: .5px; }
.forms-line { color: var(--muted); font-size: .8rem; margin-top: 1px; }
.verb-done-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--border);
  flex-shrink: 0; align-self: center;
}
.verb-done-dot.done { background: var(--ok); }
.verb-detail { border-top: 1px dashed var(--border); margin: 2px 0 10px; padding: 4px 0 6px; }
.tap-hide {
  color: var(--primary); font-size: .82rem; cursor: pointer;
  border-bottom: 1px dashed var(--primary); padding-bottom: 1px;
}
.note-line { cursor: default; color: var(--warn); }
.phrase-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px 8px;
  margin: 0 0 10px;
  cursor: pointer;
}
.phrase-item:last-child { margin-bottom: 2px; }
.phrase-head { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; margin-bottom: 2px; }
.phrase-text { font-weight: 700; font-size: 1.02rem; }
.phrase-meaning { color: var(--primary); font-size: .88rem; font-weight: 600; }
.tap-hint { color: var(--muted); font-size: .78rem; }
.sense { margin-top: 2px; }
.sense + .sense { border-top: 1px dashed var(--line-soft); margin-top: 8px; padding-top: 8px; }
.sense-head { display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.sense-idx {
  display: inline-block; min-width: 16px; height: 16px; line-height: 16px; text-align: center;
  background: var(--primary-weak); color: var(--primary); border-radius: 4px; font-size: .68rem;
}
.tag {
  display: inline-block; font-size: .72rem; line-height: 1.5;
  padding: 0 8px; border-radius: 999px; vertical-align: 1px;
}
.tag-scene { background: var(--primary-weak); color: var(--primary); }
.tag-caution { background: var(--warn-weak); color: var(--warn); }
.example { color: var(--muted); font-size: .88rem; margin-top: 4px; }
.example .zh { color: var(--text); }
.meta-line { font-size: .8rem; margin-top: 3px; }
/* 分页 */
.pager { display: flex; align-items: center; gap: 10px; margin: 10px 0 2px; }
.pager .page-info { flex: 1; text-align: center; color: var(--muted); font-size: .85rem; }
.pager button { min-width: 72px; }
.page-size-row { display: flex; align-items: center; gap: 8px; margin-top: 8px; font-size: .8rem; color: var(--muted); }

/* 练习 */
.progress-track { height: 6px; border-radius: 3px; background: var(--border); overflow: hidden; margin: 4px 0 14px; }
.progress-fill { height: 100%; background: var(--primary); transition: width .25s; }
.q-zh { font-size: 1.28rem; font-weight: 600; margin: 6px 0 14px; }
.q-hint { color: var(--muted); font-size: .8rem; margin-bottom: 8px; }
.grade-box { border-radius: var(--radius); padding: 12px; margin-top: 12px; }
.grade-box.correct { background: var(--ok-weak); }
.grade-box.wrong { background: var(--danger-weak); }
.grade-verdict { font-weight: 700; margin-bottom: 6px; }
.grade-std { margin-top: 8px; font-size: .95rem; }
.grade-std .lab { color: var(--muted); font-size: .78rem; }
.grade-note { color: var(--muted); font-size: .82rem; margin-top: 6px; }

/* 错题本 */
.wrong-item { padding: 10px 0; border-bottom: 1px dashed var(--border); }
.wrong-item:last-child { border-bottom: none; }
.wrong-pair { display: grid; grid-template-columns: 1fr; gap: 3px; font-size: .92rem; }
.wrong-pair .bad { color: var(--danger); }
.wrong-pair .good { color: var(--ok); }
.memo-list { font-size: .9rem; }
.memo-list li { margin: 6px 0; }

/* 统计 */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 4px; }
.stat-cell { background: var(--card); border: 1px solid var(--border); border-radius: 10px; text-align: center; padding: 10px 4px; }
.stat-cell .num { font-size: 1.25rem; font-weight: 700; color: var(--primary); }
.stat-cell .lab { font-size: .72rem; color: var(--muted); }
.bar-row { display: flex; align-items: center; gap: 8px; margin: 7px 0; font-size: .85rem; }
.bar-row .name { width: 84px; color: var(--muted); text-align: right; flex-shrink: 0; overflow: hidden; text-overflow: ellipsis; }
.bar-track { flex: 1; height: 10px; border-radius: 5px; background: var(--border); overflow: hidden; }
.bar-fill { height: 100%; background: var(--primary); border-radius: 5px; }
.bar-fill.ok { background: var(--ok); }
.bar-val { width: 72px; flex-shrink: 0; color: var(--muted); font-size: .78rem; }

/* 设置 */
.seg { display: flex; background: var(--bg); border-radius: 10px; padding: 3px; margin: 6px 0; }
.seg button { flex: 1; background: transparent; color: var(--muted); padding: 7px 0; border-radius: 8px; }
.seg button.on { background: var(--card); color: var(--primary); font-weight: 600; box-shadow: var(--shadow); }
.mono { font-family: Consolas, monospace; font-size: .82rem; }
.divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
footer.info { color: var(--muted); font-size: .75rem; text-align: center; margin-top: 18px; }
.empty { text-align: center; color: var(--muted); padding: 30px 0; font-size: .9rem; }