:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --ink: #1a2230;
  --ink2: #5a6a80;
  --line: #e3e8ef;
  --brand: #2d5fcc;
  --brand-d: #234ba0;
  --green: #1f9d55;
  --red: #d64545;
  --amber: #b9770a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}
[hidden] { display: none !important; }
code { background: #eef2f8; padding: 1px 5px; border-radius: 4px; font-size: .92em; }

/* ---------- Logowanie ---------- */
.login-wrap {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 24px;
}
.login-card {
  background: var(--card); width: 100%; max-width: 360px;
  padding: 32px; border-radius: 14px; border: 1px solid var(--line);
  box-shadow: 0 8px 30px rgba(20, 40, 80, .08); display: flex; flex-direction: column; gap: 14px;
}
.brand { font-size: 24px; font-weight: 700; color: var(--brand); }
.brand-sub { font-size: 13px; color: var(--ink2); margin-top: -10px; margin-bottom: 6px; }
.login-card label { font-size: 13px; font-weight: 600; color: var(--ink2); display: flex; flex-direction: column; gap: 5px; }
.login-card input {
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 15px; color: var(--ink); background: #fff;
}
.login-card input:focus { outline: 2px solid var(--brand); border-color: var(--brand); }
.login-card button, button[type=submit] {
  margin-top: 6px; padding: 11px; border: 0; border-radius: 8px;
  background: var(--brand); color: #fff; font-size: 15px; font-weight: 600; cursor: pointer;
}
.login-card button:hover { background: var(--brand-d); }
.login-card button:disabled { opacity: .6; cursor: default; }
.login-foot { margin-top: 18px; font-size: 12px; color: var(--ink2); max-width: 360px; text-align: center; }
.error { color: var(--red); font-size: 13px; background: #fdecec; padding: 8px 10px; border-radius: 8px; }
.ok { color: var(--green); font-size: 13px; background: #e9f7ef; padding: 8px 10px; border-radius: 8px; }

/* ---------- Pasek górny ---------- */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--card); border-bottom: 1px solid var(--line);
  padding: 12px 24px; position: sticky; top: 0; z-index: 5;
}
.topbar-brand { font-weight: 700; color: var(--brand); font-size: 15px; }
.topbar-jst { font-size: 18px; font-weight: 700; }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.user-label { font-size: 13px; color: var(--ink2); }
.btn-ghost {
  background: transparent; border: 1px solid var(--line); color: var(--ink2);
  padding: 7px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 600;
}
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-sm { padding: 3px 9px; font-size: 12px; }

/* ---------- Treść ---------- */
.content { max-width: 960px; margin: 0 auto; padding: 24px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 20px 22px; margin-bottom: 18px;
}
.card h2 { margin: 0 0 14px; font-size: 16px; }
.muted { color: var(--ink2); font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 18px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.stat-val { font-size: 24px; font-weight: 700; color: var(--brand); }
.stat-lbl { font-size: 13px; color: var(--ink2); margin-top: 2px; }

.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th { text-align: left; color: var(--ink2); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; padding: 6px 8px; border-bottom: 2px solid var(--line); }
.tbl td { padding: 8px; border-bottom: 1px solid var(--line); }
.tbl td.num { text-align: right; font-variant-numeric: tabular-nums; }

.line { padding: 12px 0; border-bottom: 1px solid var(--line); }
.line:last-child { border-bottom: 0; }
.line-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.line-no { font-weight: 700; background: var(--brand); color: #fff; padding: 2px 9px; border-radius: 6px; font-size: 13px; }
.line-op { font-weight: 600; }
.line-route { color: var(--ink2); font-size: 13px; margin-top: 4px; }
.line-meta { color: var(--ink2); font-size: 12px; margin-top: 3px; }
.warn { color: var(--amber); font-weight: 600; font-size: 13px; }

.tag { font-size: 11px; background: #eef2f8; color: var(--ink2); padding: 2px 8px; border-radius: 20px; font-weight: 600; }
.tag-red { background: #fdecec; color: var(--red); }

.add-user { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.add-user input { flex: 1; min-width: 160px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; }
.add-user button { padding: 9px 16px; border: 0; border-radius: 8px; background: var(--brand); color: #fff; font-weight: 600; cursor: pointer; }
#newUserResult { margin-top: 12px; }
ul { margin: 0; padding-left: 20px; }
li { margin-bottom: 6px; }