:root {
  --brand-primary: #1b2a4a;
  --brand-accent: #c8a24a;
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1c2430;
  --muted: #6b7480;
  --border: #e2e6eb;
  --green: #2e7d32;
  --amber: #b8860b;
  --red: #c0392b;
  --overdue: #7b1fa2;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--brand-primary); color: #fff;
  padding: 0.75rem 1.25rem;
}
.topbar .brand { color: #fff; font-weight: 700; text-decoration: none; font-size: 1.05rem; }
.topbar nav { display: flex; align-items: center; gap: 1.25rem; }
.topbar nav a { color: #dfe6f1; text-decoration: none; }
.topbar nav a:hover { color: #fff; }
.logout-form { margin: 0; }
.link-btn { background: none; border: none; color: #dfe6f1; cursor: pointer; font: inherit; padding: 0; }
.link-btn:hover { color: #fff; text-decoration: underline; }

.container { max-width: 1080px; margin: 1.5rem auto; padding: 0 1rem; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.75rem; }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.25rem; margin-bottom: 1.25rem;
}
.login-card { max-width: 380px; margin: 4rem auto; }

.kpi-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.25rem; }
.kpi {
  flex: 1 1 140px; background: var(--card); border: 1px solid var(--border);
  border-left: 5px solid var(--muted); border-radius: 8px; padding: 0.75rem 1rem;
  font-size: 0.9rem; color: var(--muted);
}
.kpi-num { display: block; font-size: 1.6rem; font-weight: 700; color: var(--text); }
.kpi-overdue { border-left-color: var(--overdue); }
.kpi-red { border-left-color: var(--red); }
.kpi-amber { border-left-color: var(--amber); }
.kpi-green { border-left-color: var(--green); }

.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th, .table td { text-align: left; padding: 0.55rem 0.6rem; border-bottom: 1px solid var(--border); }
.table th { color: var(--muted); font-weight: 600; }
.table .subrow td { background: #fafbfc; color: var(--muted); font-size: 0.85rem; }

.badge {
  display: inline-block; padding: 0.15rem 0.5rem; border-radius: 999px;
  font-size: 0.72rem; font-weight: 700; color: #fff;
}
.badge-green { background: var(--green); }
.badge-amber { background: var(--amber); }
.badge-red { background: var(--red); }
.badge-overdue { background: var(--overdue); }

.btn {
  display: inline-block; background: var(--brand-primary); color: #fff;
  border: none; border-radius: 6px; padding: 0.5rem 0.9rem; cursor: pointer;
  font: inherit; text-decoration: none;
}
.btn:hover { filter: brightness(1.1); }
.btn-primary { background: var(--brand-primary); }
.btn-small { padding: 0.25rem 0.6rem; font-size: 0.8rem; }

.stack { display: flex; flex-direction: column; gap: 0.75rem; }
.stack label, .grid-form label { display: flex; flex-direction: column; font-size: 0.85rem; color: var(--muted); gap: 0.25rem; }
input, select {
  padding: 0.5rem; border: 1px solid var(--border); border-radius: 6px;
  font: inherit; font-size: 16px; background: #fff; color: var(--text);
}
.grid-form {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem; margin-top: 0.75rem;
}
.grid-form .check { flex-direction: row; align-items: center; gap: 0.4rem; }
.grid-form .btn { grid-column: 1 / -1; justify-self: start; }
.inline-form { display: inline-flex; gap: 0.4rem; margin-left: 0.5rem; }
.inline-form input { font-size: 0.85rem; padding: 0.3rem; }

.adder { margin-top: 1rem; }
.adder summary { cursor: pointer; color: var(--brand-primary); font-weight: 600; }

.notice { padding: 0.75rem 1rem; border-radius: 6px; font-size: 0.9rem; }
.notice-error { background: #fdecea; color: var(--red); }
.notice-warn { background: #fff8e1; color: var(--amber); }
.empty, .hint { color: var(--muted); font-style: italic; }
.footer { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 2rem 1rem; }
code { background: #eef0f3; padding: 0.1rem 0.3rem; border-radius: 4px; }