:root {
  --primary: #10b981;
  --primary-dark: #059669;
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #9ca3af;
  --line: #e5e7eb;
  --danger: #ef4444;
  --warn: #f59e0b;
  --blue: #3b82f6;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}
#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--bg);
  position: relative;
  padding-bottom: 64px;
  box-shadow: 0 0 24px rgba(0, 0, 0, 0.04);
}

/* 顶部栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 52px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--primary);
  color: #fff;
  padding-top: env(safe-area-inset-top);
}
.topbar-title { font-size: 18px; font-weight: 700; }
.topbar-user {
  font-size: 13px;
  background: rgba(255, 255, 255, 0.22);
  padding: 3px 10px;
  border-radius: 999px;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 内容 */
#view { padding: 12px; }

/* 筛选条 */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.chip {
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--muted);
}
.chip.on { background: var(--primary); color: #fff; border-color: var(--primary); }
.search {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  padding: 9px 12px;
  font-size: 14px;
  margin-bottom: 12px;
  outline: none;
}
.search:focus { border-color: var(--primary); }

/* 待办卡片 */
.card {
  background: var(--card);
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.check {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 2px solid var(--line);
  flex: 0 0 auto;
  margin-top: 2px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px;
}
.check.done { background: var(--primary); border-color: var(--primary); }
.card-main { flex: 1; min-width: 0; }
.card-title { font-size: 15px; font-weight: 600; word-break: break-word; }
.card.done .card-title { text-decoration: line-through; color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 6px;
  background: #f1f5f9;
  color: #475569;
}
.tag.cat { background: #ecfdf5; color: var(--primary-dark); }
.tag.due { background: #fff7ed; color: var(--warn); }
.tag.due.over { background: #fef2f2; color: var(--danger); }
.tag.who { background: #eff6ff; color: var(--blue); }
.tag.pri-high { background: #fef2f2; color: var(--danger); }
.tag.pri-normal { background: #fff7ed; color: var(--warn); }
.tag.pri-low { background: #f1f5f9; color: #64748b; }
.card-note { font-size: 13px; color: var(--muted); margin-top: 6px; white-space: pre-wrap; word-break: break-word; }
.card-actions { display: flex; gap: 10px; margin-top: 8px; }
.card-actions button { font-size: 12px; color: var(--muted); background: none; border: none; padding: 0; cursor: pointer; }
.card-actions .del { color: var(--danger); }

.penalty-line { font-size: 12px; color: var(--danger); margin-top: 6px; font-weight: 600; }

.ck { display: flex; align-items: center; gap: 8px; font-size: 14px; margin-top: 6px; }
.ck input { width: 16px; height: 16px; accent-color: var(--primary); }
label { display: block; }
.card-actions .settle { color: var(--warn); font-weight: 600; }
.card-actions .settle.settled { color: var(--muted); font-weight: 400; }
.meta-line { font-size: 11px; color: var(--muted); margin-top: 4px; }

.empty { text-align: center; color: var(--muted); padding: 48px 0; }
.empty .big { font-size: 40px; }
.empty .sub { font-size: 13px; margin-top: 6px; color: var(--muted); }
.done-title { color: var(--muted); border-top: 1px dashed var(--line); padding-top: 14px; margin-top: 14px; }

/* 悬浮按钮 */
.fab {
  position: fixed;
  bottom: 76px;
  left: 50%;
  transform: translateX(-50%);
  width: 56px; height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  font-size: 30px;
  line-height: 1;
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.4);
  cursor: pointer;
  z-index: 30;
  max-width: calc(480px - 32px);
}

/* 底部导航 */
.tabbar {
  position: fixed;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 100%; max-width: 480px;
  height: 56px;
  background: #fff;
  border-top: 1px solid var(--line);
  display: flex;
  z-index: 25;
  padding-bottom: env(safe-area-inset-bottom);
}
.tab {
  flex: 1;
  border: none;
  background: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 11px;
  color: var(--muted);
  cursor: pointer;
}
.tab .ico { font-size: 18px; }
.tab.active { color: var(--primary); font-weight: 600; }

/* 统计 */
.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.stat {
  background: #fff; border-radius: 14px; padding: 16px;
  box-shadow: var(--shadow); text-align: center;
}
.stat .num { font-size: 28px; font-weight: 800; }
.stat .lbl { font-size: 12px; color: var(--muted); margin-top: 4px; }
.stat.s-todo .num { color: var(--blue); }
.stat.s-doing .num { color: var(--warn); }
.stat.s-done .num { color: var(--primary); }
.stat.s-over .num { color: var(--danger); }
.section-title { font-size: 14px; font-weight: 700; margin: 18px 4px 10px; }

/* 成员/分类 */
.list-row {
  background: #fff; border-radius: 12px; padding: 12px 14px;
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px; box-shadow: var(--shadow);
}
.list-row .name { font-weight: 600; }
.list-row .sub { font-size: 12px; color: var(--muted); }
.list-row .del { color: var(--danger); border: none; background: none; font-size: 13px; cursor: pointer; }
.add-line { display: flex; gap: 8px; margin: 10px 0; }
.add-line input { flex: 1; border: 1px solid var(--line); border-radius: 10px; padding: 9px 12px; font-size: 14px; outline: none; }
.btn-mini2 { background: var(--primary); color: #fff; border: none; border-radius: 10px; padding: 0 16px; font-size: 14px; }

/* 我的 */
.info-card { background: #fff; border-radius: 14px; padding: 16px; box-shadow: var(--shadow); margin-bottom: 12px; }
.info-card .k { color: var(--muted); font-size: 12px; }
.info-card .v { font-size: 16px; font-weight: 600; margin-top: 2px; }
.tip { font-size: 13px; color: #475569; background: #ecfdf5; border-radius: 12px; padding: 12px 14px; line-height: 1.7; }
.tip b { color: var(--primary-dark); }

/* 弹窗 */
.modal-mask {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0, 0, 0, 0.45);
  display: flex; align-items: flex-end; justify-content: center;
}
.modal {
  width: 100%; max-width: 480px;
  background: #fff; border-radius: 18px 18px 0 0;
  max-height: 90vh; overflow: auto;
  animation: up .2s ease;
}
@keyframes up { from { transform: translateY(30px); opacity: .6; } to { transform: none; opacity: 1; } }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px; font-weight: 700; border-bottom: 1px solid var(--line); }
.modal-close { border: none; background: none; font-size: 18px; color: var(--muted); }
.modal-body { padding: 16px; }
.modal-body label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 6px; }
.modal-body .req { color: var(--danger); }
.modal-body input[type=text], .modal-body input[type=date], .modal-body select, .modal-body textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; font-size: 14px; outline: none; font-family: inherit;
}
.modal-body textarea { resize: vertical; }
.modal-body input:focus, .modal-body select:focus, .modal-body textarea:focus { border-color: var(--primary); }
.row { display: flex; gap: 8px; }
.btn-mini { background: var(--primary); color: #fff; border: none; border-radius: 10px; padding: 0 14px; font-size: 16px; }
.seg { display: flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.seg button { flex: 1; border: none; background: #fff; padding: 9px; font-size: 14px; color: var(--muted); cursor: pointer; }
.seg button.on { background: var(--primary); color: #fff; }
.hint { font-size: 13px; color: var(--muted); margin: 0 0 12px; }
.modal-foot { display: flex; gap: 10px; padding: 12px 16px calc(16px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.btn-ghost { flex: 1; border: 1px solid var(--line); background: #fff; border-radius: 12px; padding: 12px; font-size: 15px; color: var(--text); cursor: pointer; }
.btn-primary { flex: 1; border: none; background: var(--primary); color: #fff; border-radius: 12px; padding: 12px; font-size: 15px; font-weight: 600; cursor: pointer; }

/* 轻提示 */
.toast {
  position: fixed; left: 50%; top: 50%; transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.8); color: #fff; padding: 10px 18px;
  border-radius: 10px; font-size: 14px; z-index: 99; max-width: 80%; text-align: center;
}
[hidden] { display: none !important; }