:root {
  --bg: #f3f4f6;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #1d4ed8;
  --primary-dark: #1e40af;
  --danger: #b91c1c;
  --danger-bg: #fee2e2;
  --success: #047857;
  --success-bg: #d1fae5;
  --warn: #b45309;
  --warn-bg: #fef3c7;
  --info-bg: #dbeafe;
  --radius: 8px;
}

* { box-sizing: border-box; }

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

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Nawigacja ── */
.topbar {
  background: #111827;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 20px;
  flex-wrap: wrap;
}
.topbar .brand {
  font-weight: 700;
  font-size: 18px;
  padding: 14px 16px 14px 0;
  color: #fff;
}
.topbar a.nav {
  color: #d1d5db;
  padding: 16px 14px;
  display: inline-block;
}
.topbar a.nav:hover { color: #fff; text-decoration: none; background: #1f2937; }
.topbar a.nav.active { color: #fff; box-shadow: inset 0 -3px 0 var(--primary); }
.topbar .spacer { flex: 1; }
.topbar .user { color: #9ca3af; font-size: 14px; padding: 0 10px; }
.topbar form { margin: 0; }
.topbar button.linkbtn {
  background: none; border: none; color: #d1d5db; cursor: pointer;
  padding: 16px 14px; font-size: 14px;
}
.topbar button.linkbtn:hover { color: #fff; }

/* ── Układ ── */
.container { max-width: 1180px; margin: 24px auto; padding: 0 20px; }
.page-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; margin-bottom: 20px; flex-wrap: wrap;
}
.page-head h1 { font-size: 24px; margin: 0; }

/* ── Karty ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.stat .num { font-size: 30px; font-weight: 700; }
.stat .lbl { color: var(--muted); font-size: 13px; margin-top: 4px; }
.stat.danger .num { color: var(--danger); }
.stat.warn .num { color: var(--warn); }

/* ── Tabele ── */
table { width: 100%; border-collapse: collapse; background: var(--surface); }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 14px; vertical-align: top; }
th { background: #f9fafb; color: var(--muted); font-weight: 600; white-space: nowrap; }
tr:hover td { background: #fafafa; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }

/* ── Przyciski ── */
.btn {
  display: inline-block; cursor: pointer; border: 1px solid transparent;
  border-radius: 6px; padding: 8px 14px; font-size: 14px; font-weight: 500;
  background: var(--primary); color: #fff; text-decoration: none;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn.secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn.secondary:hover { background: #f9fafb; }
.btn.danger { background: var(--danger); }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn.link { background: none; color: var(--primary); padding: 4px 6px; border: none; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── Formularze ── */
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 14px; }
.form-row .hint { color: var(--muted); font-size: 12px; margin-top: 4px; }
input[type=text], input[type=email], input[type=password], input[type=date],
select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid #d1d5db; border-radius: 6px;
  font-size: 14px; font-family: inherit; background: #fff;
}
textarea { resize: vertical; min-height: 70px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; gap: 10px; margin-top: 20px; }
fieldset { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin: 0 0 16px; }
legend { font-weight: 600; padding: 0 6px; }
.cf-row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 8px; margin-bottom: 8px; }

/* ── Filtry ── */
.filters { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; align-items: end; }

/* ── Komunikaty / badge ── */
.flash { padding: 12px 16px; border-radius: 6px; margin-bottom: 12px; font-size: 14px; }
.flash.success { background: var(--success-bg); color: var(--success); }
.flash.error { background: var(--danger-bg); color: var(--danger); }
.flash.info { background: var(--info-bg); color: var(--primary-dark); }
.errors { background: var(--danger-bg); color: var(--danger); padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; }
.errors ul { margin: 6px 0 0; padding-left: 20px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge.gray { background: #f3f4f6; color: var(--muted); }
.badge.green { background: var(--success-bg); color: var(--success); }
.badge.red { background: var(--danger-bg); color: var(--danger); }
.badge.amber { background: var(--warn-bg); color: var(--warn); }
.badge.blue { background: var(--info-bg); color: var(--primary-dark); }

/* Kolory terminów wg pilności */
.due-overdue { color: var(--danger); font-weight: 700; }
.due-1 { color: var(--danger); font-weight: 600; }
.due-7 { color: var(--warn); font-weight: 600; }
.due-30 { color: var(--primary-dark); }
.due-later { color: var(--muted); }

.muted { color: var(--muted); }
.right { text-align: right; }
.nowrap { white-space: nowrap; }
.pagination { display: flex; gap: 6px; margin-top: 16px; align-items: center; }

/* ── Logowanie ── */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: #111827; }
.auth-card { background: #fff; padding: 32px; border-radius: 12px; width: 100%; max-width: 380px; }
.auth-card h1 { margin: 0 0 6px; font-size: 22px; }
.auth-card .sub { color: var(--muted); margin: 0 0 20px; font-size: 14px; }

dl.detail { display: grid; grid-template-columns: 200px 1fr; gap: 8px 16px; }
dl.detail dt { color: var(--muted); }
dl.detail dd { margin: 0; }

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
  dl.detail { grid-template-columns: 1fr; }
}