/* ==============================================
   Auth Layout — Login / Register
   ============================================== */

.auth-layout {
  min-height: 100vh;
  display: flex;
}

/* ---- Left Panel — Branding ---- */
.auth-brand-panel {
  width: 45%;
  background: var(--gradient-primary);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--spacing-8);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.auth-brand-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-4);
  z-index: 1;
}

.auth-brand-logo {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.auth-brand-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-white);
  margin: 0;
  line-height: 1.2;
}

.auth-brand-tagline {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  line-height: 1.5;
  max-width: 320px;
}

.auth-brand-vector {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-6) 0;
  z-index: 1;
}

.auth-brand-vector svg {
  width: 100%;
  max-width: 350px;
  height: auto;
  opacity: 0.9;
}

.auth-brand-copyright {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  z-index: 1;
}

/* ---- Right Panel — Form ---- */
.auth-form-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--spacing-8);
  background: var(--color-white);
  position: relative;
}

.auth-back-btn {
  position: absolute;
  top: var(--spacing-6);
  left: var(--spacing-6);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--color-gray-200);
  color: var(--color-gray-700);
  cursor: pointer;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.auth-back-btn:hover {
  background: var(--color-gray-50);
  border-color: var(--color-gray-300);
}

.auth-form-wrapper {
  max-width: 400px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

.auth-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-gray-900);
  margin: 0 0 var(--spacing-2) 0;
}

.auth-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-gray-500);
  line-height: 1.6;
  margin: 0 0 var(--spacing-6) 0;
}

.auth-form-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.auth-footer {
  margin-top: var(--spacing-8);
  text-align: center;
}

.auth-footer-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin: 0 0 var(--spacing-3) 0;
}

.auth-footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-4);
}

.auth-footer-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}

.auth-footer-link:hover {
  text-decoration: underline;
}

.auth-footer-divider {
  width: 4px;
  height: 4px;
  background: var(--color-gray-300);
  border-radius: 50%;
}

.auth-link-section {
  text-align: center;
  margin-top: var(--spacing-4);
}

.auth-link-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.auth-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}

.auth-link:hover {
  text-decoration: underline;
}

.error-text {
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin: 0;
}

/* ---- Responsive — Tablet ---- */
@media (max-width: 1024px) {
  .auth-brand-panel {
    width: 40%;
    padding: var(--spacing-6);
  }
  .auth-form-panel {
    padding: var(--spacing-6);
  }
  .auth-brand-title {
    font-size: var(--font-size-3xl);
  }
  .auth-brand-tagline {
    font-size: var(--font-size-base);
  }
  .auth-brand-vector svg {
    max-width: 280px;
  }
}

/* ---- Responsive — Mobile ---- */
@media (max-width: 768px) {
  .auth-layout {
    flex-direction: column;
  }
  .auth-brand-panel {
    width: 100%;
    min-height: 220px;
    padding: var(--spacing-6);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .auth-brand-content {
    flex: 1;
  }
  .auth-brand-title {
    font-size: var(--font-size-2xl);
  }
  .auth-brand-tagline {
    font-size: var(--font-size-sm);
    max-width: 200px;
  }
  .auth-brand-logo {
    width: 80px;
    height: 80px;
  }
  .auth-brand-vector {
    flex: 0 0 auto;
    padding: 0;
  }
  .auth-brand-vector svg {
    width: 140px;
    max-width: 140px;
  }
  .auth-brand-copyright {
    display: none;
  }
  .auth-form-panel {
    flex: 1;
    padding: var(--spacing-6) var(--spacing-4);
    justify-content: flex-start;
    padding-top: var(--spacing-8);
  }
  .auth-back-btn {
    position: static;
    margin-bottom: var(--spacing-4);
  }
  .auth-title {
    font-size: var(--font-size-2xl);
  }
}

/* ---- Responsive — Small Mobile ---- */
@media (max-width: 480px) {
  .auth-brand-panel {
    min-height: 180px;
    padding: var(--spacing-4);
  }
  .auth-brand-title {
    font-size: var(--font-size-xl);
  }
  .auth-brand-tagline {
    display: none;
  }
  .auth-brand-vector svg {
    width: 100px;
    max-width: 100px;
  }
  .auth-form-panel {
    padding: var(--spacing-4);
    padding-top: var(--spacing-6);
  }
  .auth-form-wrapper {
    max-width: 100%;
  }
  .auth-title {
    font-size: var(--font-size-xl);
  }
  .auth-subtitle {
    font-size: var(--font-size-sm);
  }
}