body.auth {
  min-height: 100vh;
  background: linear-gradient(155deg, #f2f3ff 0%, #ffffff 55%, #eef0ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.auth-container {
  width: min(1100px, 100%);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 80px rgba(27, 37, 89, 0.18);
  overflow: hidden;
}

.auth-visual {
  position: relative;
  background: linear-gradient(160deg, rgba(105, 92, 254, 0.9) 0%, rgba(169, 123, 255, 0.92) 50%, rgba(255, 123, 138, 0.85) 100%);
  color: var(--color-white);
  padding: 3rem 2.6rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.auth-visual h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 1rem;
}

.auth-visual p {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.6;
}

.auth-illustration {
  position: relative;
  margin-top: 2.2rem;
  padding: 2rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 18px 40px rgba(16, 10, 60, 0.2);
}

.radar {
  width: 120px;
  height: 120px;
  border: 2px dashed rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  margin: 0 auto 1.4rem auto;
  position: relative;
}

.radar::after {
  content: '';
  position: absolute;
  inset: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.6);
  animation: pulse 4s linear infinite;
}

@keyframes pulse {
  0% {
    opacity: 1;
    transform: scale(0.8);
  }
  70% {
    opacity: 0;
    transform: scale(1.2);
  }
  100% {
    opacity: 0;
    transform: scale(1.2);
  }
}

.auth-card {
  padding: 3rem 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.auth-card h1 {
  font-size: clamp(2.1rem, 4vw, 2.6rem);
  font-weight: 700;
}

.auth-card .lead {
  color: var(--color-text);
  font-size: 1.02rem;
}

.auth-sample {
  background: rgba(105, 92, 254, 0.08);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.2rem;
  line-height: 1.4;
  color: var(--color-text);
  font-size: 0.95rem;
}

.auth-form {
  display: grid;
  gap: 1.2rem;
}

.form-field {
  display: grid;
  gap: 0.5rem;
}

.form-field label {
  font-weight: 600;
  color: var(--color-dark);
}

.form-field input {
  width: 100%;
  padding: 0.9rem 1.1rem;
  border-radius: 12px;
  border: 1px solid rgba(79, 93, 126, 0.2);
  background: rgba(255, 255, 255, 0.95);
  font-size: 1rem;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.form-field input:focus {
  border-color: rgba(105, 92, 254, 0.6);
  box-shadow: 0 0 0 4px rgba(105, 92, 254, 0.18);
  outline: none;
}

.form-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.95rem;
}

.form-meta input[type='checkbox'] {
  width: auto;
  margin-right: 0.5rem;
}

.login-error {
  padding: 0.85rem 1.2rem;
  border-radius: 12px;
  background: rgba(255, 123, 138, 0.12);
  color: #d7263d;
  border: 1px solid rgba(255, 123, 138, 0.35);
  font-size: 0.95rem;
}

.login-success {
  padding: 0.85rem 1.2rem;
  border-radius: 12px;
  background: rgba(105, 92, 254, 0.12);
  color: var(--color-primary);
  border: 1px solid rgba(105, 92, 254, 0.25);
  font-size: 0.95rem;
}

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

  .auth-visual {
    display: none;
  }

  .auth-card {
    padding: 2.8rem 2rem;
  }
}

@media (max-width: 480px) {
  body.auth {
    padding: 1.2rem 0.6rem;
  }

  .auth-card {
    padding: 2.4rem 1.5rem;
  }

  .form-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}