:root {
  color-scheme: light;
  --primary: #0d9488;
  --primary-hover: #0f766e;
  --primary-bright: #14b8a6;
  --primary-soft: #ccfbf1;
  --success: #047857;
  --success-soft: #d1fae5;
  --warning: #b45309;
  --warning-soft: #fef3c7;
  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --info: #0369a1;
  --info-soft: #e0f2fe;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-elevated: #ffffff;
  --surface-muted: #f1f5f9;
  --topbar: rgb(255 255 255 / .82);
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --sidebar: #0f172a;
  --sidebar-text: #cbd5e1;
  --focus: #14b8a6;
  --radius: 16px;
  --control-radius: 12px;
  --sidebar-width: 256px;
  --shadow-card: 0 1px 3px rgb(15 23 42 / .04), 0 1px 2px rgb(15 23 42 / .06);
  --shadow-popover: 0 24px 64px rgb(15 23 42 / .18);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
html { background: var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text-body);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
::selection { background: color-mix(in srgb, var(--primary-bright) 30%, transparent); }
button, input, select, textarea { font: inherit; }
button, [role="button"] { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 45%, transparent);
  outline-offset: 2px;
}
.icon { width: 20px; height: 20px; flex: 0 0 auto; stroke-width: 1.8; }
.icon-sm { width: 16px; height: 16px; }
.sr-only { position: absolute; top: 0; left: 0; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); clip-path: inset(50%); white-space: nowrap; border: 0; }

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 50% 0, color-mix(in srgb, var(--primary-bright) 13%, transparent), transparent 42%); }
.login-card { width: min(100%, 420px); padding: 32px; border: 1px solid var(--border); border-radius: 20px; background: var(--surface); box-shadow: var(--shadow-popover); }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); }
.brand-mark { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; color: white; background: linear-gradient(135deg, var(--primary-bright), var(--primary-hover)); box-shadow: 0 8px 20px rgb(20 184 166 / .2); }
.brand-title { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: -.015em; }
.brand-subtitle { margin: 2px 0 0; color: var(--text-muted); font-size: 12px; }
.login-card h1 { margin: 32px 0 8px; color: var(--text); font-size: 24px; letter-spacing: -.02em; }
.login-card > p { margin: 0 0 24px; color: var(--text-muted); }

.app-shell { min-height: 100vh; }
.sidebar { position: fixed; inset: 0 auto 0 0; z-index: 20; width: var(--sidebar-width); padding: 18px 12px; border-right: 1px solid rgb(51 65 85 / .55); background: var(--sidebar); color: var(--sidebar-text); }
.sidebar .brand { padding: 4px 12px 24px; color: #f8fafc; }
.sidebar .brand-subtitle { color: #94a3b8; }
.nav-label { margin: 15px 14px 8px; color: #64748b; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.nav-link { width: 100%; min-height: 40px; display: flex; align-items: center; gap: 11px; margin: 4px 0; padding: 0 14px; border: 0; border-radius: 12px; background: transparent; color: #94a3b8; font-size: 14px; font-weight: 500; text-align: left; transition: background-color 180ms ease, color 180ms ease, box-shadow 180ms ease; }
.nav-link:hover { background: rgb(30 41 59 / .9); color: #f8fafc; }
.nav-link.active { background: rgb(19 78 74 / .38); color: #2dd4bf; box-shadow: inset 3px 0 0 #14b8a6; }
.sidebar-footer { position: absolute; inset: auto 12px 18px; }
.main { min-height: 100vh; margin-left: var(--sidebar-width); }
.topbar { position: sticky; top: 0; z-index: 12; min-height: 65px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 28px; border-bottom: 1px solid color-mix(in srgb, var(--border) 62%, transparent); background: var(--topbar); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); }
.topbar-title { margin: 0; color: var(--text); font-size: 17px; font-weight: 700; letter-spacing: -.01em; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.content { width: min(100%, 1480px); margin: 0 auto; padding: 30px 28px 40px; }
.content:focus { outline: none; }
.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.page-header h1 { margin: 0; color: var(--text); font-size: 25px; line-height: 1.25; letter-spacing: -.025em; }
.page-header p { margin: 6px 0 0; color: var(--text-muted); }
.actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 8px; }

.btn { min-height: 42px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 15px; border: 1px solid var(--border-strong); border-radius: var(--control-radius); background: var(--surface); color: var(--text-body); font-weight: 550; text-decoration: none; box-shadow: 0 1px 2px rgb(15 23 42 / .05); transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease; }
.btn:hover { border-color: color-mix(in srgb, var(--primary-bright) 62%, var(--border-strong)); background: var(--surface-muted); color: var(--text); }
.btn-primary, .btn-success { border-color: transparent; background: linear-gradient(90deg, var(--primary-bright), var(--primary-hover)); color: white; box-shadow: 0 4px 8px rgb(20 184 166 / .2); }
.btn-primary:hover, .btn-success:hover { border-color: transparent; background: linear-gradient(90deg, var(--primary), var(--primary-hover)); color: white; box-shadow: 0 6px 14px rgb(20 184 166 / .25); }
.btn-danger { border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); background: transparent; color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); background: var(--danger-soft); color: var(--danger); }
.btn-ghost { border-color: transparent; background: transparent; box-shadow: none; }
.btn-sm { min-height: 36px; padding: 0 11px; font-size: 13px; }
.btn:disabled { cursor: not-allowed; opacity: .55; box-shadow: none; }

.grid { display: grid; gap: 16px; }
.metrics-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 22px; }
.two-column { grid-template-columns: minmax(0, 1.55fr) minmax(300px, .75fr); }
.card { min-width: 0; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card); }
.card-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 62px; padding: 14px 20px; border-bottom: 1px solid var(--border); }
.card-header h2 { margin: 0; color: var(--text); font-size: 16px; letter-spacing: -.01em; }
.card-body { padding: 20px; }
.metric-card { min-height: 94px; display: flex; align-items: center; gap: 13px; padding: 16px; background: color-mix(in srgb, var(--surface) 92%, transparent); }
.metric-icon { display: grid; place-items: center; width: 36px; height: 36px; flex: 0 0 36px; border-radius: 9px; background: var(--info-soft); color: var(--info); }
.metric-card:nth-child(2) .metric-icon { background: var(--success-soft); color: var(--success); }
.metric-card:nth-child(3) .metric-icon { background: #ede9fe; color: #7c3aed; }
.metric-card:nth-child(4) .metric-icon { background: var(--warning-soft); color: var(--warning); }
.metric-content { min-width: 0; }
.metric-label { color: var(--text-muted); font-size: 12px; font-weight: 600; }
.metric-value { margin-top: 1px; overflow: hidden; color: var(--text); font-size: 21px; font-weight: 750; line-height: 1.35; letter-spacing: -.02em; text-overflow: ellipsis; white-space: nowrap; }
.metric-hint { overflow: hidden; color: var(--text-muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }