:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --border: #e5e8ec;
  --text: #1c2330;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --accent: #0ea5e9;
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(16, 24, 40, .06), 0 1px 2px rgba(16, 24, 40, .04);
  --font: -apple-system, "Segoe UI", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
}

.hidden { display: none !important; }

/* ---------- 布局 ---------- */
.view { min-height: 100vh; }

.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; height: 56px;
  background: rgba(255,255,255,.92); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.topbar-left { display: flex; align-items: center; gap: 20px; }

.topbar-right { display: flex; align-items: center; gap: 10px; }

.content { max-width: 1080px; margin: 0 auto; padding: 20px 20px 48px; }

.brand { font-size: 17px; font-weight: 700; letter-spacing: .2px; }
.brand-accent { color: var(--accent); }

/* ---------- 登录 ---------- */
#view-login {
  display: flex; align-items: center; justify-content: center; padding: 40px 16px;
}
#view-login.hidden { display: none; }

.login-card {
  width: 100%; max-width: 380px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 28px 26px;
}

.login-head { margin-bottom: 18px; }
.login-sub { margin: 6px 0 0; color: var(--muted); font-size: 13px; }

.field { display: block; margin-bottom: 14px; }
.field-label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 5px; }

input[type="email"], input[type="password"], input[type="date"] {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; font-family: inherit; background: #fff; color: var(--text);
  outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }

.btn {
  font-family: inherit; font-size: 14px; border: 1px solid transparent;
  border-radius: 8px; padding: 9px 14px; cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
}
.btn:disabled { opacity: .6; cursor: not-allowed; }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }

.btn-block { width: 100%; }

.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: #f0f2f5; }
.btn-sm { padding: 5px 10px; font-size: 13px; }

.form-error { color: var(--danger); font-size: 13px; margin: 10px 0 0; }
.login-foot { margin-top: 16px; color: var(--muted); font-size: 12px; text-align: center; }

/* ---------- Tab ---------- */
.tabs { display: flex; gap: 4px; }
.tab {
  border: none; background: transparent; font-family: inherit; font-size: 14px;
  color: var(--muted); padding: 6px 12px; border-radius: 8px; cursor: pointer;
}
.tab:hover { background: #f0f2f5; color: var(--text); }
.tab.active { color: var(--primary); background: rgba(37,99,235,.1); font-weight: 600; }

.user-chip {
  font-size: 13px; color: var(--muted);
  background: #f0f2f5; border-radius: 999px; padding: 4px 12px;
}

/* ---------- 日期行 ---------- */
.datebar {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.icon-btn {
  width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--border);
  background: #fff; font-size: 18px; line-height: 1; cursor: pointer; color: var(--text);
}
.icon-btn:hover { background: #f0f2f5; }
.date-input { width: 150px; }
.date-hint { color: var(--warn); font-size: 12.5px; }

/* ---------- 卡片 ---------- */
.cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px; margin-bottom: 18px;
}
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.card .card-label { font-size: 12.5px; color: var(--muted); }
.card .card-value { font-size: 28px; font-weight: 700; margin-top: 6px; }
.card .card-value small { font-size: 14px; font-weight: 500; color: var(--muted); }
.card-new .card-value { color: var(--primary); }
.card-old .card-value { color: var(--warn); }
.card-total .card-value { color: var(--text); }

/* ---------- 面板 ---------- */
.panel {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 18px 20px; margin-bottom: 18px;
}
.panel-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.panel-head h2 { margin: 0; font-size: 15px; font-weight: 600; }
.panel-sub { color: var(--muted); font-size: 12.5px; }
.panel-foot { color: var(--muted); font-size: 12.5px; margin: 12px 0 0; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th, .table td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table th { color: var(--muted); font-weight: 500; font-size: 12.5px; background: #fafbfc; }
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover td { background: #f8fafc; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.table .empty td { text-align: center; color: var(--muted); padding: 20px 12px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: #111827; color: #fff; font-size: 13.5px;
  padding: 10px 18px; border-radius: 8px; box-shadow: 0 4px 14px rgba(0,0,0,.18);
  z-index: 100; max-width: 80vw;
}
.toast.error { background: var(--danger); }

@media (max-width: 640px) {
  .topbar { padding: 0 12px; }
  .content { padding: 16px 12px 40px; }
  .brand { font-size: 15px; }
}