:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #1f2a37;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #1f7a4d;
  --accent-weak: #e6f2ec;
  --warn: #b45309;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

/* Login */
.login {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
}
.login-card {
  background: var(--card); padding: 32px; border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,.08); width: 320px; text-align: center;
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card p { margin: 0 0 16px; color: var(--muted); }
.login-card input {
  width: 100%; padding: 12px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 15px; margin-bottom: 12px;
}
.login-card button {
  width: 100%; padding: 12px; border: 0; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 15px; cursor: pointer;
}
.error { color: #b91c1c; }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; }
.brand span { color: var(--muted); font-weight: 400; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.badge {
  background: var(--accent-weak); color: var(--accent);
  padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.badge.warn { background: #fef3c7; color: var(--warn); }
.range { font-size: 13px; color: var(--muted); display: flex; gap: 6px; align-items: center; }
select, .ghost {
  padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: #fff; font-size: 13px; cursor: pointer;
}

/* Tabs */
.tabs { display: flex; gap: 4px; padding: 8px 20px 0; flex-wrap: wrap; }
.tab {
  border: 0; background: transparent; padding: 10px 14px; cursor: pointer;
  font-size: 14px; color: var(--muted); border-bottom: 2px solid transparent;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

main { padding: 20px; max-width: 1100px; margin: 0 auto; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin-bottom: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px;
}
.card .label { color: var(--muted); font-size: 13px; }
.card .value { font-size: 26px; font-weight: 700; margin-top: 6px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 760px) { .grid-2 { grid-template-columns: 1fr; } }

.chart-box, .table-box {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; margin-bottom: 16px;
}
.chart-box h3, .table-box h3 { margin: 0 0 12px; font-size: 15px; }
canvas { max-height: 320px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
td.note { color: var(--muted); }

.status { text-align: center; color: var(--muted); font-size: 12px; padding: 8px; }
[hidden] { display: none !important; }