:root {
  --border: #dcdfe4;
  --danger-bg: #fdecea;
  --warning-bg: #fff8e1;
  --brand: #1f6feb;
  --text: #1a1a1a;
  --muted: #6b7280;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  margin: 0;
  color: var(--text);
  background: #fafafa;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.5rem;
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.topbar .brand { font-weight: 700; color: var(--brand); text-decoration: none; }
.topbar nav a { margin-right: 1rem; color: var(--text); text-decoration: none; }
.topbar nav a:hover { text-decoration: underline; }
.topbar .user { margin-left: auto; color: var(--muted); font-size: 0.9rem; }

.content { max-width: 1100px; margin: 0 auto; padding: 1.5rem; }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}
.card.narrow { max-width: 480px; }

table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
tr.danger { background: var(--danger-bg); }
tr.warning { background: var(--warning-bg); }

.muted { color: var(--muted); }
.error { color: #b91c1c; }

form label { display: block; margin-bottom: 0.75rem; font-size: 0.9rem; }
form input, form select, form textarea {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.9rem;
}
form.inline-form, .inline-form { display: flex; gap: 0.4rem; align-items: center; }
.inline-form select, .inline-form input { width: auto; margin-top: 0; }

button {
  background: var(--brand);
  color: #fff;
  border: none;
  padding: 0.45rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
}
button:hover { opacity: 0.9; }