:root {
  --bg: #F5F7F6;
  --surface: #FFFFFF;
  --border: #E2E8E5;
  --text: #1F2937;
  --text-muted: #6B7280;
  --brand: #0F766E;
  --brand-hover: #0D5D57;
  --brand-light: #F0FDFA;
  --overdue: #DC2626;
  --overdue-bg: #FEF2F2;
  --soon: #B45309;
  --soon-bg: #FFFBEB;
  --purple: #7C3AED;
  --purple-bg: #F5F3FF;
  --shadow: 0 1px 2px rgba(16, 24, 22, 0.04), 0 1px 1px rgba(16, 24, 22, 0.03);
  --page-bg: #E8ECEA;
  --panel-shadow: 0 24px 48px -24px rgba(15, 23, 18, 0.22), 0 2px 6px rgba(15, 23, 18, 0.06);
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page-bg);
  color: var(--text);
  font-family: var(--sans);
  min-height: 100vh;
}

.wrap {
  max-width: 560px;
  margin: 36px auto 60px;
  background: var(--surface);
  border-radius: 20px;
  box-shadow: var(--panel-shadow);
  padding: 32px 28px 36px;
}

@media (max-width: 620px) {
  body { background: var(--bg); }
  .wrap { margin: 0; border-radius: 0; box-shadow: none; padding: 20px 14px 48px; background: var(--bg); }
}

header { margin-bottom: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--border); display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }

header h1 {
  font-family: var(--mono);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 5px;
  display: flex;
  align-items: center;
  gap: 9px;
}

header h1 .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--brand); display: inline-block;
}

header p { margin: 0; font-size: 13.5px; color: var(--text-muted); }

.header-account { text-align: right; padding-top: 2px; }
.header-account .email { font-size: 12px; color: var(--text-muted); display: block; margin-bottom: 4px; max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.logout-btn {
  font-family: var(--sans); font-size: 12.5px; font-weight: 600;
  background: none; border: 1px solid var(--border); color: var(--text-muted);
  padding: 5px 10px; border-radius: 7px; cursor: pointer; transition: all .15s;
}
.logout-btn:hover { border-color: var(--overdue); color: var(--overdue); background: var(--overdue-bg); }

.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar { display: none; }

.tab {
  flex: 0 0 auto;
  text-align: center;
  padding: 9px 14px;
  border-radius: 9px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .15s;
  user-select: none;
  white-space: nowrap;
}

.tab.active { background: var(--brand); color: white; box-shadow: 0 1px 4px rgba(15, 118, 110, 0.28); }
.tab:not(.active):hover { background: var(--surface); color: var(--text); }

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  margin-bottom: 18px;
}

.add-row { display: flex; flex-direction: column; gap: 10px; }

input[type="text"], input[type="date"], input[type="number"], input[type="email"], input[type="password"], textarea {
  font-family: var(--sans);
  font-size: 15px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
  color: var(--text);
  width: 100%;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  resize: vertical;
}

textarea { min-height: 70px; font-family: var(--sans); line-height: 1.5; }

input:focus, textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-light); }

.install-toggle {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--text-muted); cursor: pointer; user-select: none;
}
.install-toggle input { width: 15px; height: 15px; accent-color: var(--brand); cursor: pointer; }

.row-2 { display: flex; gap: 10px; }
.row-2 input[type="date"] { flex: 1.2; }
.row-2 input[type="number"] { flex: 1; }

button.add-btn {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  padding: 11px 18px;
  border: none;
  border-radius: 9px;
  background: var(--brand);
  color: white;
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s, transform .1s;
}

button.add-btn:hover { background: var(--brand-hover); }
button.add-btn:active { transform: scale(0.98); }
button.add-btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
button.add-btn:disabled { opacity: .6; cursor: default; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }

.chip {
  font-family: var(--sans);
  font-size: 12.5px;
  padding: 5px 11px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: all .15s;
}

.chip:hover { border-color: var(--brand); color: var(--brand); }
.chip.selected { background: var(--brand); color: white; border-color: var(--brand); }

.section-label {
  font-size: 12px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin: 20px 0 10px 2px;
}

.month-group { margin-bottom: 8px; }

.month-header {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 11px 14px; margin-bottom: 8px;
  font-size: 13.5px; font-weight: 600; color: var(--text);
  cursor: pointer; user-select: none; transition: border-color .15s;
}

.month-header:hover { border-color: var(--brand); }

.month-header .month-meta {
  font-size: 12px; font-weight: 500; color: var(--text-muted);
  display: flex; align-items: center; gap: 4px;
}

.month-header .chevron { color: var(--brand); font-size: 11px; }

.item {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 13px; margin-bottom: 8px;
  transition: border-color .15s;
}

.item:hover { border-color: #D3DBD8; }

.badge {
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  padding: 5px 9px; border-radius: 8px; white-space: nowrap;
  flex-shrink: 0; min-width: 58px; text-align: center; margin-top: 1px;
}

.badge.overdue { background: var(--overdue-bg); color: var(--overdue); }
.badge.soon { background: var(--soon-bg); color: var(--soon); }
.badge.upcoming { background: var(--brand-light); color: var(--brand); }
.badge.tag-work { background: var(--brand-light); color: var(--brand); }
.badge.tag-exercise { background: var(--soon-bg); color: var(--soon); }
.badge.tag-study { background: var(--purple-bg); color: var(--purple); }
.badge.tag-mood { background: var(--overdue-bg); color: var(--overdue); }
.badge.tag-other { background: var(--bg); color: var(--text-muted); }
.badge.tag-contract { background: var(--brand-light); color: var(--brand); }
.badge.tag-doc { background: var(--soon-bg); color: var(--soon); }
.badge.tag-family { background: var(--purple-bg); color: var(--purple); }
.badge.tag-friend { background: var(--brand-light); color: var(--brand); }
.badge.tag-colleague { background: var(--soon-bg); color: var(--soon); }
.badge.tag-landlord { background: var(--purple-bg); color: var(--purple); }
.badge.tag-visit { background: var(--overdue-bg); color: var(--overdue); }
.badge.tag-checkup { background: var(--brand-light); color: var(--brand); }
.badge.tag-medicine { background: var(--soon-bg); color: var(--soon); }

.item-body { flex: 1; min-width: 0; }
.item-text { font-size: 14.5px; line-height: 1.5; word-break: break-word; white-space: pre-wrap; }
.item-meta { font-size: 12px; color: var(--text-muted); display: block; margin-top: 4px; }

.amt-income { color: var(--brand); font-weight: 700; }
.amt-expense { color: var(--overdue); font-weight: 700; }

.item.done { opacity: .7; }
.item.done .item-text { text-decoration: line-through; color: var(--text-muted); }

.checkbox {
  flex-shrink: 0; width: 20px; height: 20px; border-radius: 6px;
  border: 2px solid var(--border); cursor: pointer; margin-top: 1px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: white; transition: all .15s;
}

.checkbox.checked { background: var(--brand); border-color: var(--brand); }

.del-btn {
  background: none; border: none; color: var(--text-muted);
  font-size: 18px; cursor: pointer; padding: 4px 6px; line-height: 1;
  border-radius: 6px; flex-shrink: 0; transition: all .15s;
}

.del-btn:hover { color: var(--overdue); background: var(--overdue-bg); }

.empty {
  text-align: center; padding: 30px 16px; color: var(--text-muted); font-size: 13.5px;
}

.empty .big { font-size: 28px; margin-bottom: 8px; }

.loading { text-align: center; padding: 40px 16px; color: var(--text-muted); font-size: 14px; }

.hint { font-size: 12px; color: var(--text-muted); margin: -4px 2px 0; }
.error-text { font-size: 12.5px; color: var(--overdue); margin: 2px 2px 0; }

/* 登录页 */
.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
}

.auth-card { width: 100%; max-width: 340px; margin: 0 auto; }
.auth-card h1 { justify-content: center; margin-bottom: 6px; }
.auth-card > p { text-align: center; margin: 0 0 16px; font-size: 13px; color: var(--text-muted); }
.auth-actions { display: flex; gap: 10px; }
.auth-actions .add-btn.secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); flex: 1; }
.auth-actions .add-btn.secondary:hover { background: var(--border); }
.auth-actions .add-btn:not(.secondary) { flex: 1; }

/* 数据备份 */
.backup-card { margin-top: 4px; }
.backup-title { font-size: 14.5px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.backup-desc { font-size: 12px; color: var(--text-muted); line-height: 1.6; margin: 0 0 16px; }
.backup-actions { display: flex; gap: 10px; }
.backup-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 7px;
  padding: 11px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-family: var(--sans);
  font-size: 14px; font-weight: 600; cursor: pointer; transition: all .15s;
  text-align: center; user-select: none;
}
.backup-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.backup-btn:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-light); }