:root {
    --primary: #4f6ef7;
    --primary-dark: #3b5bdb;
    --danger: #ef4444;
    --success: #22c55e;
    --bg: #f1f5f9;
    --text: #1e293b;
    --muted: #64748b;
    --border: #e2e8f0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 登录 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: #ffffff; }
.login-card { width: 380px; background: #fff; border-radius: 16px; padding: 40px 36px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.login-card h1 { font-size: 22px; text-align: center; margin-bottom: 6px; }
.login-card .sub { text-align: center; color: var(--muted); margin-bottom: 28px; font-size: 13px; }
.login-card label { display: block; margin-bottom: 16px; color: var(--muted); font-size: 13px; }
.login-card input { width: 100%; margin-top: 6px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; outline: none; transition: border-color .2s; }
.login-card input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,110,247,.15); }

/* 布局 */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #1e293b; color: #cbd5e1; display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; left: 0; z-index: 50; }
.logo { padding: 20px 18px; font-size: 17px; font-weight: bold; color: #fff; border-bottom: 1px solid rgba(255,255,255,.08); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.menu-item { padding: 13px 18px; cursor: pointer; display: flex; gap: 10px; align-items: center; transition: .2s; font-size: 14px; user-select: none; }
.menu-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.menu-item.active { background: var(--primary); color: #fff; }
.sidebar-footer { margin-top: auto; padding: 16px; border-top: 1px solid rgba(255,255,255,.08); }
.user-badge { margin-bottom: 10px; font-size: 13px; color: #fff; word-break: break-all; }
.role-tag { font-size: 11px; background: var(--primary); padding: 2px 8px; border-radius: 10px; margin-left: 6px; white-space: nowrap; }

.main { flex: 1; margin-left: 220px; padding: 24px; min-width: 0; }

/* 通用组件 */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; flex-wrap: wrap; gap: 12px; }
.page-header h2 { font-size: 20px; }

.btn { padding: 7px 14px; border-radius: 8px; border: 1px solid var(--border); background: #fff; cursor: pointer; font-size: 13px; transition: .2s; color: var(--text); display: inline-flex; align-items: center; justify-content: center; gap: 4px; }
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn:disabled { opacity: .45; cursor: not-allowed; pointer-events: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; border-color: #dc2626; color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-block { width: 100%; padding: 11px; font-size: 15px; }

input[type=text], input[type=password], input[type=date], input[type=number], select {
    padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; outline: none; font-size: 13px; background: #fff; color: var(--text); transition: border-color .2s;
}
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,110,247,.1); }

.card { background: #fff; border-radius: 12px; box-shadow: 0 1px 3px rgba(0,0,0,.06); padding: 18px; margin-bottom: 18px; }
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 18px; }
.stat-card { background: #fff; border-radius: 12px; padding: 18px 20px; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.stat-label { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.stat-value { font-size: 24px; font-weight: 700; word-break: break-all; }
.stat-delta { font-size: 12px; margin-top: 8px; }
.stat-delta.up { color: var(--success); }
.stat-delta.down { color: var(--danger); }

.period-tabs { display: flex; background: #fff; border-radius: 10px; padding: 4px; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.period-tabs button { border: none; background: transparent; padding: 7px 20px; border-radius: 8px; cursor: pointer; font-size: 13px; color: var(--muted); transition: .2s; }
.period-tabs button.active { background: var(--primary); color: #fff; }

.chart-row { display: grid; gap: 16px; margin-bottom: 16px; }
.chart-row.two { grid-template-columns: 1fr 1fr; }
.chart { height: 320px; width: 100%; }
.card-title { font-weight: 600; margin-bottom: 10px; }

.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.toolbar .spacer { flex: 1; }

table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 12px; overflow: hidden; }
th { background: #f8fafc; text-align: left; padding: 11px 14px; font-size: 13px; color: var(--muted); border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 11px 14px; border-bottom: 1px solid #f1f5f9; font-size: 13px; max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
tbody tr:hover { background: #f8fafc; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
th.num { text-align: right; }

.badge { display: inline-block; padding: 2px 10px; border-radius: 10px; font-size: 12px; white-space: nowrap; }
.badge-blue { background: #eff6ff; color: #3b82f6; }
.badge-green { background: #f0fdf4; color: #16a34a; }
.badge-gray { background: #f1f5f9; color: #64748b; }
.badge-red { background: #fef2f2; color: #dc2626; }

.summary-line { margin-top: 12px; color: var(--muted); font-size: 13px; }

.pagination { display: flex; align-items: center; gap: 6px; margin-top: 14px; flex-wrap: wrap; }
.pagination button { min-width: 32px; padding: 6px 8px; border: 1px solid var(--border); background: #fff; border-radius: 6px; cursor: pointer; font-size: 13px; }
.pagination button.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }
.pg-info { color: var(--muted); font-size: 13px; margin-right: 8px; }

.modal-mask { position: fixed; inset: 0; background: rgba(15,23,42,.5); display: flex; align-items: center; justify-content: center; z-index: 100; backdrop-filter: blur(2px); }
.modal { background: #fff; border-radius: 14px; padding: 24px; width: 520px; max-width: 92vw; max-height: 88vh; overflow: auto; }
.modal-title { font-size: 17px; font-weight: 600; margin-bottom: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid label { display: block; font-size: 13px; color: var(--muted); }
.form-grid input, .form-grid select { width: 100%; margin-top: 5px; }
.form-grid .full { grid-column: 1 / -1; }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; }

.import-area { background: #f8fafc; border-radius: 10px; padding: 18px; line-height: 2; }

.toast { position: fixed; top: 22px; left: 50%; transform: translateX(-50%); z-index: 999; padding: 10px 22px; border-radius: 8px; color: #fff; font-size: 14px; box-shadow: 0 6px 20px rgba(0,0,0,.15); animation: fadeInDown .3s ease; }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }

@keyframes fadeInDown { from { opacity: 0; transform: translate(-50%, -10px); } to { opacity: 1; transform: translate(-50%, 0); } }

@media (max-width: 900px) {
    .chart-row.two { grid-template-columns: 1fr; }
    .main { margin-left: 0; padding: 16px; }
    .sidebar { position: static; width: 100%; flex-direction: row; align-items: center; flex-wrap: wrap; height: auto; }
    .sidebar-footer { margin: 0; border-top: none; padding: 10px 16px; }
    .logo { border-bottom: none; padding: 14px 16px; }
    .menu-item { padding: 10px 14px; font-size: 13px; }
    nav { display: flex; flex-wrap: wrap; flex: 1; }
}