:root {
  --bg: #f5f6f8; --card: #fff; --ink: #1d2330; --muted: #6b7280;
  --line: #e5e7eb; --accent: #2f5d50; --pos: #2f7d4f; --neg: #b4452e;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--ink);
}
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.error {
  background: #fbe9e6; color: var(--neg); padding: .6rem .8rem;
  border-radius: 8px; font-size: .9rem;
}

/* Login */
.login-page { display: grid; place-items: center; min-height: 100vh; }
.login-card {
  background: var(--card); padding: 2rem; border-radius: 14px;
  box-shadow: 0 6px 24px rgba(0,0,0,.07); width: min(360px, 92vw);
}
.login-card h1 { margin: 0 0 .2rem; color: var(--accent); }
form label { display: block; margin: .8rem 0 .2rem; font-size: .85rem; color: var(--muted); }
input, button { font: inherit; }
input { width: 100%; padding: .55rem .6rem; border: 1px solid var(--line); border-radius: 8px; }
button {
  margin-top: 1rem; padding: .6rem 1rem; border: 0; border-radius: 8px;
  background: var(--accent); color: #fff; cursor: pointer;
}
button.secondary { background: #e9ecef; color: var(--ink); }

/* App */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: .8rem 1.2rem; background: var(--card); border-bottom: 1px solid var(--line);
}
.topbar .brand { font-weight: 700; color: var(--accent); }
.topbar nav { display: flex; gap: 1rem; align-items: center; }
.topbar a { color: var(--accent); text-decoration: none; }
.container { max-width: 920px; margin: 1.2rem auto; padding: 0 1rem; }
.filters { display: flex; gap: .8rem; align-items: end; flex-wrap: wrap; margin-bottom: 1rem; }
.filters label { font-size: .8rem; color: var(--muted); }
.filters input { width: auto; }
.filters button { margin-top: 0; }
.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1rem; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem; }
.kpi-label { display: block; color: var(--muted); font-size: .8rem; }
.kpi-value { font-size: 1.5rem; font-weight: 700; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.2rem; margin-bottom: 1rem; }
.card h2 { margin: .2rem 0 .4rem; font-size: 1.05rem; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .5rem .4rem; border-bottom: 1px solid var(--line); font-size: .9rem; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
@media (max-width: 560px) { .kpis { grid-template-columns: 1fr; } }