* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1b2540 0%, #2f3d68 100%);
}
.login-card {
  background: #fff;
  border-radius: 14px;
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
}
.login-card .brand {
  text-align: center;
  margin-bottom: 24px;
}
.login-card .brand .logo {
  width: 56px; height: 56px; border-radius: 14px;
  background: #2f3d68; color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 22px; margin: 0 auto 12px;
}
.login-card h1 { font-size: 20px; margin: 0 0 4px; color: #1b2540; text-align: center; }
.login-card p.subtitle { margin: 0 0 24px; color: #6b7280; font-size: 13px; text-align: center; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: #374151; margin-bottom: 6px; }
.field input {
  width: 100%; padding: 11px 12px; border: 1px solid #d1d5db; border-radius: 8px; font-size: 14px;
}
.field input:focus { outline: none; border-color: #2f3d68; box-shadow: 0 0 0 3px rgba(47,61,104,.15); }
button.submit {
  width: 100%; padding: 12px; border: none; border-radius: 8px; background: #2f3d68; color: #fff;
  font-size: 14px; font-weight: 600; cursor: pointer; margin-top: 8px;
}
button.submit:hover { background: #26325a; }
.error {
  background: #fef2f2; color: #b91c1c; font-size: 13px; padding: 10px 12px; border-radius: 8px;
  margin-bottom: 16px; display: none;
}
.footer-note { text-align: center; font-size: 12px; color: #9ca3af; margin-top: 20px; }