/* ========== 基础 ========== */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --text-2: #6e6e73;
  --text-3: #86868b;
  --border: #e5e5ea;
  --border-2: #d2d2d7;
  --accent: #0071e3;
  --accent-hover: #0058b9;
  --red: #ff3b30;
  --orange: #ff9500;
  --green: #34c759;
  --purple: #5b5bdd;
  --sidebar-w: 220px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.2);
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
input, select, textarea, button {
  font-family: inherit;
  font-size: 15px;
  padding: 9px 12px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,113,227,0.1); }
button {
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
}
button:hover { background: var(--accent-hover); }

/* ========== 侧边栏 ========== */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--card);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  z-index: 20;
}
.brand {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--text);
  font-size: 18px; font-weight: 700;
  padding: 4px 8px;
}
.brand-icon {
  width: 28px; height: 28px;
  background: var(--accent); color: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700;
}
.side-nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.side-nav a {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
  color: var(--text-2);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: background .15s, color .15s;
}
.side-nav a:hover { background: #f0f0f5; color: var(--text); }
.side-nav a.active { background: rgba(0,113,227,0.1); color: var(--accent); font-weight: 600; }
.nav-icon { width: 20px; text-align: center; font-size: 16px; }
.side-shortcut {
  background: transparent; color: var(--text-2);
  border: 1px solid var(--border);
  text-align: center; font-size: 14px;
  padding: 8px;
}

/* ========== 主区 ========== */
.main-wrap {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.main-wrap.no-sidebar { margin-left: 0; }
.container {
  flex: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px 60px;
  width: 100%;
}

/* ========== 页头 ========== */
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 12px;
}
.page-title { display: flex; align-items: baseline; gap: 10px; }
h1 { font-size: 26px; font-weight: 700; }
h1 .date, .page-title .date { font-size: 15px; color: var(--text-3); font-weight: 500; }
h2 { font-size: 16px; font-weight: 600; }
.page-tools { display: flex; gap: 8px; }
.tool-btn {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 14px;
  font-size: 14px;
  border-radius: 20px;
}
.tool-btn:hover { background: #f0f7ff; border-color: var(--accent); color: var(--accent); }

/* ========== 快速新建 ========== */
.quick-add-wrap {
  display: flex; gap: 8px;
  margin-bottom: 14px;
  align-items: center;
}
.quick-add { flex: 1; display: flex; gap: 8px; }
.quick-add input { flex: 1; padding: 12px 14px; font-size: 15px; }
.add-submit {
  width: 44px; padding: 0;
  font-size: 22px; font-weight: 300;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn {
  width: 44px; height: 44px;
  padding: 0;
  background: var(--card);
  color: var(--accent);
  border: 1px solid var(--border-2);
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { background: #f0f7ff; border-color: var(--accent); }
.voice-btn.recording { background: var(--red); color: #fff; border-color: var(--red); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.6; } }

/* ========== 折叠区 ========== */
details.add-box, details.ai-box {
  background: var(--card);
  border-radius: var(--radius);
  padding: 12px 18px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}
details summary { cursor: pointer; font-weight: 600; font-size: 14px; padding: 4px 0; color: var(--text-2); }
details[open] summary { margin-bottom: 14px; }
.todo-form { display: flex; flex-direction: column; gap: 12px; }
.title-input { font-size: 16px; }
.todo-form .row { display: flex; gap: 14px; flex-wrap: wrap; }
.todo-form .row label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--text-2); flex: 1; min-width: 140px; }
.todo-form textarea, .ai-form textarea { resize: vertical; }
.ai-form textarea { width: 100%; margin-bottom: 10px; }

/* ========== 日清按钮 ========== */
.clear-form { margin-bottom: 18px; }
.btn-clear { background: var(--orange); width: 100%; padding: 12px; font-size: 15px; font-weight: 600; }
.btn-clear:hover { background: #e08600; }

/* ========== 批量栏 ========== */
.batch-bar {
  background: var(--text);
  color: #fff;
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.batch-bar #batch-count { font-size: 14px; font-weight: 600; margin-right: 8px; }
.batch-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; flex: 1; }
.batch-form button { background: var(--accent); padding: 6px 12px; font-size: 13px; }
.batch-form button.danger { background: var(--red); }
.batch-form select, .batch-form input[type="text"] { padding: 6px 10px; font-size: 13px; }

/* ========== 看板 ========== */
.board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}
.board-col {
  background: rgba(0,0,0,0.02);
  border-radius: var(--radius);
  padding: 12px;
  min-height: 200px;
}
.col-head { padding: 4px 8px 12px; display: flex; align-items: center; justify-content: space-between; }
.col-head h2 { display: flex; align-items: center; gap: 8px; color: var(--text); }
.col-count {
  font-size: 12px;
  background: var(--border);
  color: var(--text-2);
  padding: 1px 8px;
  border-radius: 10px;
  font-weight: 600;
}

/* ========== 任务卡片 ========== */
.todo-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.todo-item {
  background: var(--card);
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--border-2);
  transition: box-shadow .15s, transform .1s;
}
.todo-item:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.todo-item.prio-high { border-left-color: var(--red); }
.todo-item.prio-medium { border-left-color: var(--orange); }
.todo-item.prio-low { border-left-color: var(--green); }
.todo-item.done { opacity: 0.55; }
.todo-item.done .title { text-decoration: line-through; }
.todo-item.dragging { opacity: 0.4; transform: rotate(1deg); }
.todo-item.kbd-focus { outline: 2px solid var(--accent); outline-offset: 2px; }

.todo-main { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.batch-check { width: 18px; height: 18px; cursor: pointer; margin: 0; accent-color: var(--accent); }
.drag-handle { color: var(--text-3); cursor: grab; font-size: 18px; padding: 0 2px; }
.drag-handle:active { cursor: grabbing; }
.toggle-form { display: inline; }
.check {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 2px solid var(--border-2);
  background: transparent;
  color: #fff;
  font-size: 13px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.check:hover { border-color: var(--green); }
.todo-item.done .check, .check.checked { background: var(--green); border-color: var(--green); }

.todo-text { flex: 1; min-width: 0; }
.todo-text .title { font-weight: 500; display: block; word-break: break-word; font-size: 15px; }
.meta { margin-top: 4px; display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  font-size: 12px;
  background: #f0f0f5;
  color: var(--text-2);
  padding: 1px 8px;
  border-radius: 10px;
}
.tag.due { background: #fff4e5; color: var(--orange); }
.tag.prio { background: #eef; color: var(--purple); }
.tag.prio-high { background: #ffeaea; color: var(--red); }
.tag.prio-medium { background: #fff4e5; color: var(--orange); }
.tag.prio-low { background: #e8f8ee; color: var(--green); }
.tag.notes-toggle { cursor: help; background: #eef6ff; color: var(--accent); }

.todo-actions { display: flex; gap: 4px; align-items: center; }
.link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text-2);
  border: none;
  padding: 6px 8px;
  text-decoration: none;
  font-size: 16px;
  cursor: pointer;
  border-radius: 6px;
}
.link-btn:hover { background: #f0f0f5; color: var(--text); }
.link-btn.danger:hover { color: var(--red); background: #fff0f0; }

.empty { text-align: center; color: var(--text-3); padding: 32px 16px; font-size: 14px; }
.empty.muted { font-size: 13px; }

/* ========== 卡片样式（通用） ========== */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.login-card { max-width: 380px; margin: 60px auto; }
.hint { color: var(--text-3); font-size: 14px; margin-bottom: 16px; }
.error { color: var(--red); margin-bottom: 12px; font-size: 14px; }
.msg { background: #e8f5e9; color: #2e7d32; padding: 10px 14px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 14px; }
.btns { display: flex; gap: 12px; align-items: center; }
.settings-form { display: flex; flex-direction: column; gap: 12px; }
.settings-form label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--text-2); }

/* 设置页：状态徽章、行内表单、测试连接结果 */
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 500; margin-left: 8px; vertical-align: middle; }
.badge-ok { background: #e8f5e9; color: #2e7d32; }
.badge-warn { background: #fff3e0; color: #ef6c00; }
.inline-form { display: inline; margin: 0; }
.ai-test-result { margin-top: 12px; padding: 10px 14px; border-radius: var(--radius-sm); font-size: 14px; }
.ai-test-result.testing { background: #eef6ff; color: var(--accent); }
.ai-test-result.ok { background: #e8f5e9; color: #2e7d32; }
.ai-test-result.fail { background: #fff0f0; color: var(--red); }

/* ========== 归档 ========== */
.archive-list { list-style: none; }
.archive-list li { margin-bottom: 8px; }
.archive-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card);
  border-radius: 10px;
  padding: 14px 18px;
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow);
}
.archive-item:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.archive-item .date { font-weight: 600; }
.archive-item .count { color: var(--text-3); font-size: 14px; }

.footer { text-align: center; color: var(--text-3); font-size: 13px; padding: 20px; }

/* ========== 搜索页 ========== */
.search-form { display: flex; gap: 10px; margin-bottom: 22px; }
.search-form input { flex: 1; }
.search-results h2 { margin-top: 22px; margin-bottom: 10px; color: var(--text); }

/* ========== 统计 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}
.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
}
.stat-value { font-size: 28px; font-weight: 700; color: var(--text); }
.stat-label { font-size: 13px; color: var(--text-2); margin-top: 4px; }
.stat-sub { font-size: 12px; color: var(--text-3); margin-top: 8px; }
.progress-bar {
  width: 100%; height: 6px;
  background: #f0f0f5;
  border-radius: 3px;
  margin-top: 10px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green), #30b8e8);
  border-radius: 3px;
  transition: width .4s;
}
.bar-chart {
  display: flex; align-items: flex-end; gap: 12px;
  height: 160px; padding-top: 20px;
}
.bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; }
.bar-value { font-size: 12px; color: var(--text-2); margin-bottom: 4px; }
.bar { width: 60%; max-width: 40px; background: linear-gradient(180deg, var(--accent), #5ac8fa); border-radius: 4px 4px 0 0; min-height: 4px; }
.bar-label { font-size: 11px; color: var(--text-3); margin-top: 6px; }
.tag-stats { list-style: none; }
.tag-stats li { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.tag-name { width: 80px; font-size: 14px; color: var(--text); }
.tag-bar-wrap { flex: 1; height: 22px; background: #f0f0f5; border-radius: 4px; overflow: hidden; }
.tag-bar { height: 100%; background: linear-gradient(90deg, var(--orange), #ffcc00); border-radius: 4px; transition: width .4s; }
.tag-count { width: 30px; text-align: right; font-size: 14px; color: var(--text-2); }
.import-form { margin-top: 14px; display: flex; flex-direction: column; gap: 10px; }
.import-form textarea { width: 100%; resize: vertical; font-family: monospace; font-size: 13px; }

/* ========== 浮层 ========== */
.pomodoro-overlay, .shortcuts-overlay, .ai-confirm-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  padding: 20px;
}
.pomodoro-box, .shortcuts-box, .ai-confirm-box {
  background: var(--card);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
}
.pomodoro-box { padding: 36px 40px; text-align: center; }
.pomodoro-task { font-size: 16px; color: var(--text-2); margin-bottom: 16px; max-width: 320px; word-break: break-word; }
.pomodoro-timer { font-size: 64px; font-weight: 200; color: var(--text); font-variant-numeric: tabular-nums; margin-bottom: 24px; }
.pomodoro-controls { display: flex; gap: 10px; justify-content: center; margin-bottom: 12px; }

.shortcuts-box { padding: 28px 32px; max-width: 400px; width: 100%; }
.shortcuts-box h2 { margin-bottom: 16px; }
.shortcuts-list { list-style: none; margin-bottom: 20px; }
.shortcuts-list li { padding: 8px 0; font-size: 14px; color: var(--text); }
kbd {
  display: inline-block;
  background: #f0f0f5;
  border: 1px solid var(--border-2);
  border-radius: 4px;
  padding: 2px 8px;
  font-family: monospace;
  font-size: 13px;
  margin-right: 8px;
  min-width: 28px;
  text-align: center;
}

.ai-confirm-box { padding: 28px; max-width: 480px; width: 100%; max-height: 85vh; overflow-y: auto; }
.ai-confirm-box h2 { margin-bottom: 8px; }
#ai-confirm-status { margin-bottom: 16px; min-height: 20px; }
#ai-confirm-list { display: none; flex-direction: column; gap: 14px; }
.ai-todo-card { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px; display: flex; flex-direction: column; gap: 8px; background: #fbfbfd; }
.ai-todo-card .card-head { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-2); }
.ai-todo-card .card-head .del-btn { background: none; border: none; color: var(--red); cursor: pointer; font-size: 18px; padding: 0 4px; line-height: 1; }
.ai-todo-card label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--text-2); }
.ai-todo-card input, .ai-todo-card select, .ai-todo-card textarea { font-size: 14px; }
#ai-confirm-actions { display: none; gap: 12px; margin-top: 12px; }
#ai-confirm-actions button { flex: 1; }
#ai-confirm-cancel { background: #e0e0e5; color: var(--text); }

/* 重排建议列表 */
.reorder-list { list-style: decimal inside; margin: 12px 0; max-height: 240px; overflow-y: auto; }
.reorder-list li { padding: 6px 8px; font-size: 14px; color: var(--text); border-radius: 6px; }
.reorder-list li:nth-child(odd) { background: #f7f7fa; }

/* ========== 移动端汉堡菜单 ========== */
.menu-toggle {
  display: none;
  position: fixed;
  top: 14px; left: 14px;
  z-index: 30;
  width: 40px; height: 40px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 20px;
  padding: 0;
  color: var(--text);
}
.sidebar-backdrop {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 19;
}
.sidebar-backdrop.show { display: block; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  :root { --sidebar-w: 240px; }
  .sidebar {
    transform: translateX(-100%);
    transition: transform .25s ease;
    box-shadow: 2px 0 20px rgba(0,0,0,0.15);
  }
  .sidebar.open { transform: translateX(0); }
  .menu-toggle { display: flex; align-items: center; justify-content: center; }
  .main-wrap { margin-left: 0; }
  .container { padding: 60px 14px 50px; }

  .page-head { flex-direction: column; align-items: stretch; }
  .page-tools { justify-content: flex-start; overflow-x: auto; padding-bottom: 4px; }
  .tool-btn { white-space: nowrap; flex-shrink: 0; }

  /* 移动端看板改为单列堆叠 */
  .board { grid-template-columns: 1fr; }
  .board-col { min-height: auto; }

  .quick-add-wrap { flex-wrap: wrap; }
  .quick-add { flex: 1 1 100%; }
  .icon-btn { flex-shrink: 0; }

  .stats-grid { grid-template-columns: 1fr; }
  .bar-chart { gap: 6px; height: 120px; }
  .pomodoro-timer { font-size: 48px; }
  .pomodoro-box { padding: 28px 24px; }
  .shortcuts-box { padding: 22px; }

  .todo-item { padding: 10px 12px; }
  .todo-actions { gap: 0; }
  .link-btn { padding: 6px; }
  .drag-handle { display: none; }
}

@media (max-width: 480px) {
  h1 { font-size: 22px; }
  .quick-add input { padding: 11px 12px; font-size: 16px; }
  .todo-text .title { font-size: 14px; }
  .page-tools { gap: 6px; }
  .tool-btn { padding: 7px 12px; font-size: 13px; }
}