.auth-shell { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; align-items: start; }
  .auth-card, .aside-card { background: #fff; border: 1px solid #e5e7eb; border-radius: 16px; padding: 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.04); }
  .eyebrow { text-transform: uppercase; letter-spacing: 0.08em; color: #6b7280; font-weight: 700; font-size: 13px; margin: 0 0 6px; }
  h1 { margin: 4px 0 10px; }
  .lead { color: #4b5563; margin-top: 0; }
  .form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 20px; }
  .field-group label { display: block; font-weight: 600; margin-bottom: 6px; }
  .field-group input { width: 100%; padding: 11px 12px; border-radius: 10px; border: 1px solid #d1d5db; font-size: 15px; }
  .field-group input:focus { outline: 2px solid #0066ae; border-color: #0066ae; }
  .full-row { grid-column: 1 / -1; }
  .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 16px; border-radius: 10px; font-weight: 700; cursor: pointer; border: 1px solid transparent; text-decoration: none; }
  .btn-primary { background: linear-gradient(135deg, #0066ae, #0b8bd9); color: #fff; box-shadow: 0 10px 25px rgba(0,102,174,0.18); border-color: #0b8bd9; }
  .btn-primary:hover { opacity: 0.95; }
  .btn-secondary { background: #fff; color: #0f172a; border-color: #d1d5db; }
  .btn-secondary:hover { border-color: #0f172a; }
  .actions { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
  .form-message { margin-top: 16px; padding: 12px 14px; border-radius: 12px; border: 1px solid transparent; }
  .form-message.error { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
  .form-message.success { background: #ecfdf3; color: #166534; border-color: #bbf7d0; }
  .auth-aside p { color: #374151; }
  @media (max-width: 960px) { .auth-shell { grid-template-columns: 1fr; } }