:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-text: #0f172a;
  --color-muted: #64748b;
  --color-primary: #0f172a;
  --color-danger: #b91c1c;
  --color-success: #15803d;
}

* { box-sizing: border-box; }

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

a { color: var(--color-primary); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
}

.topbar__entity-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 999px;
  display: inline-block;
}

.topbar__nav { display: flex; gap: 1rem; align-items: center; }

.layout {
  display: flex;
  min-height: calc(100vh - 56px);
}

.sidebar {
  width: 220px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: 1rem;
}

.sidebar a {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  color: var(--color-text);
  text-decoration: none;
  margin-bottom: 0.25rem;
}

.sidebar a:hover { background: var(--color-bg); }

.main { flex: 1; padding: 2rem; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  max-width: 480px;
}

.card--wide { max-width: none; }

.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
}

label { display: block; font-weight: 500; margin-bottom: 0.25rem; margin-top: 1rem; }

input[type="text"], input[type="email"], input[type="password"] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  font-size: 1rem;
}

button, .btn {
  display: inline-block;
  margin-top: 1.25rem;
  padding: 0.6rem 1.25rem;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
}

.btn--secondary { background: transparent; color: var(--color-primary); border: 1px solid var(--color-border); }

.errorlist { color: var(--color-danger); list-style: none; padding: 0; margin: 0.25rem 0; }

.messages { list-style: none; padding: 0; margin: 0 0 1rem 0; }
.messages li { padding: 0.5rem 0.75rem; border-radius: 0.5rem; margin-bottom: 0.5rem; }
.messages .success { background: #dcfce7; color: var(--color-success); }
.messages .error { background: #fee2e2; color: var(--color-danger); }

.backup-codes { font-family: monospace; font-size: 1.1rem; line-height: 1.8; }

.qr-box { text-align: center; margin: 1rem 0; }
.qr-box img { border: 1px solid var(--color-border); border-radius: 0.5rem; }

.muted { color: var(--color-muted); font-size: 0.9rem; }