:root {
  --bg: #f5f6f8;
  --card: #fff;
  --text: #1d2330;
  --muted: #667085;
  --border: #d9dde5;
  --accent: #2457d6;
  --error-bg: #fdecec;
  --error-text: #a11b1b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 600; }
.logout { display: flex; gap: 12px; align-items: center; margin: 0; }
.user { color: var(--muted); }
.container { max-width: 960px; margin: 24px auto; padding: 0 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
}
.card.narrow { max-width: 380px; margin: 10vh auto; }
h1 { font-size: 1.35rem; margin: 0 0 16px; }
label { display: block; margin-bottom: 12px; font-weight: 500; }
input, select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  font: inherit;
  border: 1px solid var(--border);
  border-radius: 8px;
}
button {
  padding: 10px 18px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}
button.link { padding: 0; color: var(--accent); background: none; font-weight: 500; }
.alert { padding: 10px 12px; border-radius: 8px; }
.alert.error { background: var(--error-bg); color: var(--error-text); }
.muted { color: var(--muted); }