/* ============================================================
   多邻国风格样式 — 移动端优先
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

:root {
  --bg: #131F24;
  --card: #1A2730;
  --card2: #1F2F3A;
  --border: #2A3A45;
  --primary: #58CC02;
  --primary-dark: #46A302;
  --danger: #FF4B4B;
  --warning: #FFC800;
  --text: #FFFFFF;
  --text2: #8A9BA8;
  --correct: #58CC02;
  --wrong: #FF4B4B;
  --xp: #FFC800;
  --favorite: #FFD700;
}

html { font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg); color: var(--text);
  min-height: 100vh; min-height: 100dvh;
  padding-bottom: 80px;
  overflow-x: hidden;
}

.container { max-width: 600px; margin: 0 auto; padding: 12px; }

/* ── 顶部栏 ── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; background: var(--card); border-radius: 14px;
  margin-bottom: 12px; border: 1px solid var(--border);
}
.topbar-left { display: flex; align-items: center; gap: 8px; }
.topbar-logo { font-size: 22px; }
.topbar-title { font-weight: 600; font-size: 14px; }
.topbar-right { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.topbar-stat { display: flex; align-items: center; gap: 3px; }
.topbar-stat .num { font-weight: 700; color: var(--xp); }

/* ── 页面切换 ── */
.page { display: none; }
.page.active { display: block; animation: fadeIn 0.25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ── 考试倒计时 ── */
.countdown-card {
  background: linear-gradient(135deg, #1A3A2A, #1A2A3A);
  border: 1px solid var(--border); border-radius: 14px;
  padding: 16px; margin-bottom: 12px; text-align: center;
}
.countdown-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.countdown-header span { font-size: 13px; color: var(--text2); }
.countdown-edit {
  background: none; border: 1px solid var(--border); color: var(--text2);
  padding: 4px 10px; border-radius: 6px; font-size: 12px; cursor: pointer;
}
.countdown-num { font-size: 48px; font-weight: 800; color: var(--warning); }
.countdown-label { font-size: 14px; color: var(--text2); }

/* ── 搜索 ── */
.search-wrap { margin-bottom: 12px; position: relative; }
.search-input {
  width: 100%; padding: 12px 16px; border-radius: 12px;
  background: var(--card); border: 1px solid var(--border);
  color: var(--text); font-size: 15px; outline: none;
}
.search-input:focus { border-color: var(--primary); }
.search-results {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; margin-top: 4px; max-height: 300px;
  overflow-y: auto; z-index: 50;
}
.search-item {
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  cursor: pointer; transition: 0.2s;
}
.search-item:hover { background: var(--card2); }
.search-item:last-child { border-bottom: none; }
.search-item-title { font-size: 14px; font-weight: 600; }
.search-item-sub { font-size: 12px; color: var(--text2); margin-top: 2px; }

/* ── 欢迎横幅 ── */
.welcome-banner {
  background: linear-gradient(135deg, #1A3A2A, #1A2A3A);
  border: 1px solid var(--border); border-radius: 14px;
  padding: 16px; margin-bottom: 12px; text-align: center;
}
.welcome-banner h2 { font-size: 18px; margin-bottom: 6px; }
.welcome-banner p { color: var(--text2); font-size: 13px; }

/* ── 统计卡片 ── */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-bottom: 12px; }
.stat-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 6px; text-align: center;
}
.stat-num { font-size: 18px; font-weight: 700; color: var(--xp); }
.stat-label { font-size: 10px; color: var(--text2); margin-top: 2px; }

/* ── 等级进度 ── */
.level-bar {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px; margin-bottom: 12px;
}
.level-info { font-size: 12px; color: var(--text2); margin-bottom: 6px; }
.level-xp { font-size: 11px; color: var(--text2); margin-top: 4px; text-align: right; }

/* ── 进度条 ── */
.progress-bg { height: 8px; background: var(--card2); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--primary); border-radius: 4px; transition: width 0.5s ease; }

/* ── 每日任务 ── */
.daily-task { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin-bottom: 12px; }
.daily-header { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 6px; }
.daily-done { color: var(--primary); font-size: 12px; margin-top: 6px; text-align: center; }

/* ── AI推荐 ── */
.ai-recommend {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px; margin-bottom: 12px;
}
.ai-recommend-header { font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.ai-recommend-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px; background: var(--card2); border-radius: 8px;
  margin-bottom: 6px; cursor: pointer;
}
.ai-recommend-item:hover { background: rgba(88,204,2,0.1); }

/* ── 科目卡片 ── */
.section-title { font-size: 15px; font-weight: 600; margin-bottom: 10px; }
.subject-grid { display: flex; flex-direction: column; gap: 8px; }
.subject-card {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border: 2px solid var(--border);
  border-radius: 12px; padding: 14px; cursor: pointer; transition: 0.2s;
}
.subject-card:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,0,0,0.3); }
.subject-card:active { transform: scale(0.98); }
.subj-icon { font-size: 24px; width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; }
.subj-info { flex: 1; }
.subj-name { font-size: 15px; font-weight: 600; }
.subj-desc { font-size: 11px; color: var(--text2); margin-top: 2px; }
.subj-progress { width: 80px; }
.progress-text { font-size: 10px; color: var(--text2); display: block; text-align: right; margin-top: 3px; }

/* ── 科目页 ── */
.subj-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 16px; padding: 14px;
  background: var(--card); border-radius: 12px; border: 1px solid var(--border);
}
.subj-icon-lg { font-size: 32px; width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; }
.subj-name-lg { font-size: 18px; font-weight: 700; }
.subj-desc-lg { font-size: 12px; color: var(--text2); margin-top: 2px; }

.chapter-block { margin-bottom: 16px; }
.chapter-title { font-size: 14px; font-weight: 600; color: var(--text2); padding: 6px 0; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.lesson-item {
  display: flex; align-items: center; gap: 10px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px; margin-bottom: 6px;
  cursor: pointer; transition: 0.2s;
}
.lesson-item:hover { border-color: var(--primary); }
.lesson-item:active { transform: scale(0.98); }
.lesson-item.done { border-color: var(--primary); opacity: 0.8; }
.lesson-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.lesson-info { flex: 1; }
.lesson-name { font-size: 13px; font-weight: 600; }
.lesson-count { font-size: 11px; color: var(--text2); margin-top: 2px; }
.lesson-badge { font-size: 10px; color: var(--primary); background: rgba(88,204,2,0.1); padding: 2px 6px; border-radius: 6px; }

/* ── 课程页 ── */
.lesson-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.lesson-header-left { display: flex; align-items: center; gap: 8px; }
.back-btn {
  background: var(--card2); border: 1px solid var(--border); color: var(--text);
  width: 34px; height: 34px; border-radius: 8px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.back-btn:active { background: var(--primary); }
.lesson-title { font-size: 15px; font-weight: 600; }
.lesson-hearts { font-size: 13px; letter-spacing: 1px; }

/* ── 学习阶段 ── */
.learn-card {
  background: var(--card); border: 2px solid var(--primary);
  border-radius: 16px; padding: 24px; text-align: center;
  min-height: 280px; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.learn-phase { font-size: 12px; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px; }
.learn-title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.learn-content { font-size: 15px; line-height: 1.7; white-space: pre-line; color: var(--text); margin-bottom: 12px; }
.learn-tip {
  font-size: 13px; color: var(--primary); background: rgba(88,204,2,0.1);
  padding: 10px 14px; border-radius: 10px; margin-bottom: 16px;
  text-align: left; width: 100%; cursor: pointer;
}
.learn-tip::before { content: '💡 点击查看提示'; }
.learn-tip.show::before { content: '💡 '; }
.learn-tip-content { display: none; }
.learn-tip.show .learn-tip-content { display: inline; }
.learn-actions { display: flex; gap: 10px; width: 100%; margin-top: 8px; }

/* ── 题目区域 ── */
.question-area { min-height: 260px; }
.q-type { font-size: 11px; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
.q-text { font-size: 17px; font-weight: 600; line-height: 1.5; margin-bottom: 16px; }
.q-hint {
  font-size: 12px; color: var(--text2); margin-bottom: 12px;
  padding: 8px 12px; background: rgba(88,204,2,0.08); border-radius: 8px;
  cursor: pointer;
}
.q-hint::before { content: '💡 点击查看提示'; }
.q-hint.show::before { content: '💡 '; }
.q-hint-content { display: none; }
.q-hint.show .q-hint-content { display: inline; }

/* ── 选择题 ── */
.q-options { display: flex; flex-direction: column; gap: 8px; }
.option-btn {
  padding: 12px 14px; border-radius: 10px; cursor: pointer;
  background: var(--card2); border: 2px solid var(--border);
  color: var(--text); font-size: 14px; text-align: left; transition: 0.2s;
}
.option-btn:hover { border-color: var(--primary); }
.option-btn:active { transform: scale(0.98); }
.option-btn.correct { border-color: var(--correct); background: rgba(88,204,2,0.15); }
.option-btn.wrong { border-color: var(--wrong); background: rgba(255,75,75,0.15); }
.option-btn.disabled { pointer-events: none; opacity: 0.7; }

/* ── 填空题 ── */
.fill-input-wrap { display: flex; gap: 8px; margin-bottom: 12px; }
.fill-input {
  flex: 1; padding: 12px 14px; border-radius: 10px;
  background: var(--card2); border: 2px solid var(--border);
  color: var(--text); font-size: 15px; outline: none;
}
.fill-input:focus { border-color: var(--primary); }
.fill-input.correct { border-color: var(--correct); background: rgba(88,204,2,0.1); }
.fill-input.wrong { border-color: var(--wrong); background: rgba(255,75,75,0.1); }
.fill-btn {
  padding: 12px 20px; border-radius: 10px; cursor: pointer;
  background: var(--primary); border: none; color: white;
  font-size: 15px; font-weight: 600;
}
.fill-btn:active { background: var(--primary-dark); }

/* ── 数学符号面板 ── */
.math-symbols {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 8px; margin-bottom: 12px;
}
.symbols-row { display: flex; gap: 4px; margin-bottom: 4px; }
.symbols-row:last-child { margin-bottom: 0; }
.sym-btn {
  flex: 1; padding: 8px 0; border-radius: 6px; cursor: pointer;
  background: var(--card2); border: 1px solid var(--border);
  color: var(--text); font-size: 16px; font-weight: 600;
  transition: 0.15s; text-align: center; min-width: 0;
  -webkit-tap-highlight-color: transparent;
}
.sym-btn:active { background: var(--primary); border-color: var(--primary); transform: scale(0.92); }
.sym-btn.wide { flex: 1.5; font-size: 13px; }

/* ── 判断题 ── */
.judge-btns { display: flex; gap: 10px; }
.judge-btn {
  flex: 1; padding: 16px; border-radius: 12px; cursor: pointer;
  background: var(--card2); border: 2px solid var(--border);
  color: var(--text); font-size: 16px; font-weight: 600; transition: 0.2s;
}
.judge-btn:hover { border-color: var(--primary); }
.judge-btn:active { transform: scale(0.98); }
.judge-btn.correct { border-color: var(--correct); background: rgba(88,204,2,0.15); }
.judge-btn.wrong { border-color: var(--wrong); background: rgba(255,75,75,0.15); }
.judge-btn.disabled { pointer-events: none; opacity: 0.7; }

/* ── 排序题 ── */
.sort-answer { min-height: 44px; padding: 10px; margin-bottom: 12px; background: var(--card2); border-radius: 10px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.sort-selected { padding: 6px 12px; background: var(--primary); color: white; border-radius: 6px; cursor: pointer; font-size: 13px; }
.sort-words { display: flex; flex-wrap: wrap; gap: 6px; }
.sort-word-btn {
  padding: 8px 14px; border-radius: 8px; cursor: pointer;
  background: var(--card2); border: 2px solid var(--border);
  color: var(--text); font-size: 13px; transition: 0.2s;
}
.sort-word-btn:hover { border-color: var(--primary); }
.sort-word-btn:active { transform: scale(0.95); }

/* ── 收藏按钮 ── */
.fav-btn {
  background: none; border: none; cursor: pointer;
  font-size: 18px; padding: 4px; transition: 0.2s;
}
.fav-btn:active { transform: scale(1.3); }

/* ── 反馈区域 ── */
.q-feedback { margin-top: 16px; padding: 14px; border-radius: 12px; display: flex; align-items: flex-start; gap: 10px; }
.q-feedback.correct { background: rgba(88,204,2,0.1); border: 1px solid rgba(88,204,2,0.3); }
.q-feedback.wrong { background: rgba(255,75,75,0.1); border: 1px solid rgba(255,75,75,0.3); }
.fb-icon { font-size: 20px; flex-shrink: 0; }
.fb-text { flex: 1; font-size: 14px; line-height: 1.5; }
.ai-loading { color: var(--text2); font-style: italic; }
.ai-explain { font-size: 13px; line-height: 1.6; white-space: pre-line; }

/* ── 操作按钮 ── */
.q-actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.action-btn {
  padding: 12px 20px; border-radius: 10px; cursor: pointer;
  font-size: 14px; font-weight: 600; border: none; transition: 0.2s;
  flex: 1; min-width: 100px; text-align: center;
}
.action-btn:active { transform: scale(0.96); }
.action-btn.small { padding: 8px 14px; font-size: 12px; border-radius: 8px; }
.next-btn { background: var(--primary); color: white; }
.next-btn:hover { background: var(--primary-dark); }
.explain-btn { background: var(--card2); color: var(--text); border: 2px solid var(--border); }
.explain-btn:hover { border-color: var(--primary); }

/* ── 完成页 ── */
.complete-page { text-align: center; padding: 30px 16px; }
.complete-emoji { font-size: 50px; margin-bottom: 12px; }
.complete-msg { font-size: 20px; font-weight: 700; margin-bottom: 20px; }
.complete-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 24px; }
.complete-stat { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.complete-stat-num { font-size: 22px; font-weight: 700; color: var(--xp); }
.complete-stat-label { font-size: 11px; color: var(--text2); margin-top: 3px; }
.complete-actions { display: flex; flex-direction: column; gap: 8px; }

/* ── 无生命值 ── */
.no-hearts { text-align: center; padding: 50px 16px; }
.no-hearts-icon { font-size: 50px; margin-bottom: 12px; }
.no-hearts-text { font-size: 17px; margin-bottom: 6px; }
.no-hearts-sub { color: var(--text2); font-size: 13px; margin-bottom: 20px; }

/* ── 错题本 ── */
.error-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; flex-wrap: wrap; gap: 8px; }
.error-item { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin-bottom: 8px; }
.error-tag { font-size: 10px; color: white; padding: 2px 6px; border-radius: 6px; display: inline-block; margin-bottom: 6px; }
.error-q { font-size: 13px; margin-bottom: 4px; }
.error-a { font-size: 12px; color: var(--correct); }
.error-actions { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }

/* ── 统计页 ── */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 16px; }
.stats-section { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-bottom: 12px; }
.stats-section h3 { margin-bottom: 12px; font-size: 15px; }
.stat-subj-row { display: flex; align-items: center; gap: 8px; margin: 8px 0; }
.stat-subj-icon { width: 32px; height: 32px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.stat-subj-name { width: 36px; font-size: 12px; }
.stat-subj-pct { width: 36px; font-size: 11px; color: var(--text2); text-align: right; }

/* ── 收藏页 ── */
.fav-item { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin-bottom: 8px; }
.fav-item-title { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.fav-item-content { font-size: 12px; color: var(--text2); white-space: pre-line; }
.fav-item-actions { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }

/* ── AI 对话 ── */
.chat-container { display: flex; flex-direction: column; height: calc(100vh - 160px); height: calc(100dvh - 160px); }
.chat-messages { flex: 1; overflow-y: auto; padding: 12px 0; display: flex; flex-direction: column; gap: 10px; }
.chat-msg { display: flex; gap: 8px; }
.chat-msg.user { flex-direction: row-reverse; }
.chat-avatar { width: 32px; height: 32px; border-radius: 8px; background: var(--card2); display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.chat-bubble { max-width: 80%; padding: 10px 14px; border-radius: 12px; font-size: 13px; line-height: 1.5; }
.chat-msg.ai .chat-bubble { background: var(--card); border: 1px solid var(--border); }
.chat-msg.user .chat-bubble { background: var(--primary); color: white; }
.chat-input-wrap { display: flex; gap: 8px; padding: 10px 0; border-top: 1px solid var(--border); }
.chat-input {
  flex: 1; padding: 10px 14px; border-radius: 10px;
  background: var(--card2); border: 1px solid var(--border);
  color: var(--text); font-size: 13px; outline: none;
}
.chat-send { padding: 10px 16px; border-radius: 10px; background: var(--primary); border: none; color: white; font-size: 13px; font-weight: 600; cursor: pointer; }
.chat-send:active { background: var(--primary-dark); }

/* ── 成就 ── */
.achievements-section { margin-bottom: 12px; }
.achievement-item {
  display: flex; align-items: center; gap: 10px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px; margin-bottom: 6px;
}
.achievement-icon { font-size: 28px; }
.achievement-info { flex: 1; }
.achievement-name { font-size: 13px; font-weight: 600; }
.achievement-desc { font-size: 11px; color: var(--text2); }

/* ── 底部导航 ── */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--card); border-top: 1px solid var(--border);
  display: flex; justify-content: space-around; padding: 6px 0;
  padding-bottom: max(6px, env(safe-area-inset-bottom));
  z-index: 100;
}
.nav-item {
  display: flex; flex-direction: column; align-items: center;
  cursor: pointer; padding: 4px 12px; color: var(--text2);
  font-size: 10px; transition: 0.2s; -webkit-tap-highlight-color: transparent;
}
.nav-item:active { transform: scale(0.9); }
.nav-item.active { color: var(--primary); }
.nav-icon { font-size: 20px; margin-bottom: 1px; }

/* ── XP 弹窗 ── */
.xp-popup {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--xp); color: #000;
  padding: 10px 20px; border-radius: 10px;
  font-size: 18px; font-weight: 700;
  animation: xpPop 1.5s ease forwards;
  z-index: 1000; pointer-events: none;
}
@keyframes xpPop {
  0% { opacity: 1; transform: translate(-50%, -50%) scale(0.5); }
  30% { transform: translate(-50%, -50%) scale(1.1); }
  50% { transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -80%) scale(0.8); }
}

/* ── 空状态 ── */
.empty-state { text-align: center; padding: 50px 16px; color: var(--text2); }
.empty-icon { font-size: 40px; margin-bottom: 10px; }

/* ── TTS 按钮 ── */
.tts-btn {
  background: none; border: none; cursor: pointer;
  font-size: 16px; padding: 4px 6px; border-radius: 6px;
  transition: 0.2s; vertical-align: middle; margin-left: 6px;
}
.tts-btn:active { background: rgba(255,255,255,0.1); }
.tts-btn.playing { animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

/* ── 打字光标 ── */
.typing-cursor { color: var(--primary); animation: blink 0.8s infinite; font-weight: 100; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* ── 动画 ── */
.fade-in { animation: fadeIn 0.25s ease; }

/* ── 响应式 ── */
@media (max-width: 380px) {
  html { font-size: 14px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .topbar-right { gap: 6px; }
  .topbar-stat { font-size: 11px; }
}

/* ── 用户头像 ── */
.topbar-user { cursor: pointer; padding: 4px; }
.user-avatar { font-size: 20px; opacity: 0.6; }
.user-avatar.logged-in { opacity: 1; }

/* ── 用户菜单 ── */
.user-menu {
  position: absolute; top: 50px; right: 10px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 0; width: 220px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4); z-index: 200;
  overflow: hidden;
}
.user-menu-header {
  display: flex; align-items: center; gap: 10px;
  padding: 14px; border-bottom: 1px solid var(--border);
  background: var(--card2);
}
.user-menu-avatar { font-size: 32px; }
.user-menu-name { font-size: 14px; font-weight: 600; }
.user-menu-id { font-size: 11px; color: var(--text2); }
.user-menu-actions { padding: 8px; }
.user-menu-btn {
  width: 100%; padding: 10px; border: none; background: none;
  color: var(--text); font-size: 13px; text-align: left;
  cursor: pointer; border-radius: 8px; transition: 0.15s;
}
.user-menu-btn:hover { background: var(--card2); }
.logout-btn { color: var(--danger); }

/* ── 登录/注册页 ── */
.auth-container {
  max-width: 360px; margin: 0 auto; padding: 40px 20px;
  text-align: center;
}
.auth-header { margin-bottom: 30px; }
.auth-logo { font-size: 50px; margin-bottom: 12px; }
.auth-header h2 { font-size: 22px; margin-bottom: 6px; }
.auth-header p { font-size: 13px; color: var(--text2); }
.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-input {
  padding: 14px 16px; border-radius: 10px;
  background: var(--card2); border: 2px solid var(--border);
  color: var(--text); font-size: 15px; outline: none;
  transition: 0.2s;
}
.auth-input:focus { border-color: var(--primary); }
.auth-btn {
  padding: 14px; border-radius: 10px; border: none;
  background: var(--primary); color: white;
  font-size: 16px; font-weight: 600; cursor: pointer;
  transition: 0.2s;
}
.auth-btn:active { background: var(--primary-dark); transform: scale(0.98); }
.auth-links { font-size: 13px; color: var(--text2); }
.auth-links a { color: var(--primary); text-decoration: none; }
.auth-error { color: var(--danger); font-size: 13px; min-height: 20px; }

/* ── Toast 提示 ── */
.toast-popup {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--card); color: var(--text);
  padding: 12px 24px; border-radius: 10px;
  font-size: 14px; border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 1.7s forwards;
  z-index: 1000; pointer-events: none;
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, -50%) scale(0.8); } }
@keyframes toastOut { to { opacity: 0; transform: translate(-50%, -50%) scale(0.8); } }