/* ---------- Page background ---------- */
    body.auth-page {
      font-family: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
      color: #111827;
      margin: 0;
      min-height: 100vh;
      background:
        radial-gradient(1200px 600px at 10% 15%, rgba(255,255,255,0.25) 0%, rgba(255,255,255,0) 45%),
        radial-gradient(1100px 520px at 90% 85%, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0) 40%),
        linear-gradient(140deg, #ff6f61 0%, #8e44ad 54%, #3498db 100%);
      background-attachment: fixed;
    }

    .auth-wrapper {
      max-width: 1040px;
      margin: 120px auto 60px;
      padding: 0 18px;
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
      gap: 32px;
      align-items: stretch;
    }

    @media (max-width: 900px) {
      .auth-wrapper {
        grid-template-columns: 1fr;
        margin-top: 100px;
      }
    }

    .auth-card {
      background: rgba(255,255,255,0.95);
      border-radius: 24px;
      padding: 26px 24px 28px;
      box-shadow: 0 18px 45px rgba(15, 23, 42, 0.25);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(255,255,255,0.7);
    }

    .auth-heading {
      margin-bottom: 18px;
    }
    .auth-heading h1 {
      margin: 0 0 4px 0;
      font-size: 1.6rem;
    }
    .auth-heading p {
      margin: 0;
      font-size: 0.95rem;
      color: #6b7280;
    }

    /* ---------- Form ---------- */
    .auth-form {
      display: grid;
      gap: 16px;
      margin-top: 4px;
    }

    .auth-group {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .auth-label {
      font-size: 0.9rem;
      font-weight: 500;
      color: #374151;
    }

    .auth-input {
      border-radius: 12px;
      border: 1px solid #d1d5db;
      padding: 11px 12px;
      font-size: 0.98rem;
      outline: none;
      transition: border-color .15s ease, box-shadow .15s ease, transform .08s ease;
      background: #fff;
      box-shadow: 0 2px 8px rgba(15,23,42,0.06);
    }

    .auth-input:focus {
      border-color: #ff7f50;
      box-shadow: 0 0 0 3px rgba(255,127,80,0.20);
      transform: translateY(-1px);
    }

    .auth-error {
      margin: 0 0 4px 0;
      padding: 8px 10px;
      border-radius: 10px;
      background: #fef2f2;
      color: #b91c1c;
      font-size: 0.85rem;
      border: 1px solid #fecaca;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .auth-error i {
      font-size: 0.9rem;
    }

    .auth-actions {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 6px;
      gap: 12px;
      flex-wrap: wrap;
    }

    .auth-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.86rem;
    }

    .auth-links a {
      color: #2563eb;
      text-decoration: none;
      font-weight: 500;
    }
    .auth-links a:hover {
      text-decoration: underline;
    }

    .btn-auth-primary {
      border: none;
      border-radius: 999px;
      padding: 11px 20px;
      background: linear-gradient(90deg, #ff7f50, #ff914d);
      color: #fff;
      font-size: 0.98rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      box-shadow: 0 12px 24px rgba(15,23,42,0.25);
      transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
      white-space: nowrap;
    }

    .btn-auth-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 16px 32px rgba(15,23,42,0.3);
      filter: brightness(1.03);
    }

    .btn-auth-primary i {
      font-size: 0.9rem;
    }

    /* ---------- Side panel ---------- */
    .auth-side {
      color: #f9fafb;
      padding: 20px 22px;
      border-radius: 24px;
      border: 1px solid rgba(255,255,255,0.6);
      background: radial-gradient(circle at top left, rgba(255,255,255,0.32), transparent 55%),
                  radial-gradient(circle at bottom right, rgba(15,23,42,0.26), transparent 55%),
                  rgba(15,23,42,0.25);
      box-shadow: 0 18px 45px rgba(15,23,42,0.55);
      backdrop-filter: blur(22px);
      -webkit-backdrop-filter: blur(22px);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 14px;
    }

    .auth-side h2 {
      margin: 0 0 8px 0;
      font-size: 1.3rem;
    }
    .auth-side p {
      margin: 0;
      font-size: 0.9rem;
      color: rgba(243,244,246,0.92);
    }

    .auth-bullets {
      margin: 10px 0 0 0;
      padding-left: 18px;
      font-size: 0.86rem;
      color: rgba(249,250,251,0.9);
    }

    .auth-bullets li {
      margin-bottom: 5px;
    }

    .auth-side-footer {
      font-size: 0.8rem;
      color: rgba(229,231,235,0.85);
    }