:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --panel-2: #eef3f8;
  --text: #1f2937;
  --muted: #6b7280;
  --brand: #2563eb;
  --brand-2: #0f172a;
  --ok: #059669;
  --warn: #d97706;
  --danger: #dc2626;
  --border: #dbe4ee;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.15), transparent 24rem),
    linear-gradient(180deg, #eef4fb, #f8fafc 40%, #f2f6fb);
  min-height: 100vh;
}

button, input { font: inherit; }

.page { width: min(1120px, calc(100% - 24px)); margin: 0 auto; padding: 24px 0 40px; }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card, .app-shell {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow);
  border-radius: 24px;
}

.login-card { width: min(420px, 100%); padding: 28px; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 6px 12px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--brand);
  font-size: 13px;
  font-weight: 600;
}

.login-title { margin: 16px 0 8px; font-size: 30px; }
.login-subtitle, .muted { color: var(--muted); }
.stack { display: grid; gap: 14px; margin-top: 20px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 14px; font-weight: 600; }
.field input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
}

.row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  border: 0;
  border-radius: 14px;
  padding: 12px 18px;
  cursor: pointer;
  transition: transform 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, #2563eb, #1d4ed8); color: #fff; }
.btn-ghost { background: var(--panel-2); color: var(--text); }
.btn-ok { background: rgba(5, 150, 105, 0.12); color: var(--ok); }
.btn-warn { background: rgba(217, 119, 6, 0.12); color: var(--warn); }
.btn-danger { background: rgba(220, 38, 38, 0.12); color: var(--danger); }

.hint-box, .status-box {
  border-radius: 14px;
  padding: 12px 14px;
  background: var(--panel-2);
  font-size: 14px;
}
.status-box.error { background: rgba(220, 38, 38, 0.08); color: var(--danger); }
.status-box.ok { background: rgba(5, 150, 105, 0.08); color: var(--ok); }

.app-shell { padding: 20px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.topbar h1 { margin: 8px 0 0; font-size: 28px; }
.nav { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.nav button.active { background: var(--brand-2); color: #fff; }

.grid { display: grid; gap: 16px; }
.stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}
.card h3, .card h2 { margin: 0 0 10px; }
.stat-value { font-size: 32px; font-weight: 700; }
.list { display: grid; gap: 12px; }
.item {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  background: linear-gradient(180deg, #fff, #fbfdff);
}
.item-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}
.item-title { font-size: 16px; font-weight: 700; }
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  background: rgba(37, 99, 235, 0.12);
  color: var(--brand);
}
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}
.empty {
  padding: 28px 16px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: 16px;
}
.split { display: grid; gap: 16px; grid-template-columns: 1.2fr 0.8fr; }

@media (max-width: 900px) {
  .stats, .split { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
}