.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.auth-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  width: 100%;
  max-width: 500px;
  box-shadow: var(--shadow-xl);
}

.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.auth-logo h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.auth-logo p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.auth-form {
  margin-top: 2rem;
}

.password-toggle {
  position: relative;
}

.password-toggle-btn {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  transition: var(--transition-fast);
}

.password-toggle-btn:hover {
  color: var(--text-primary);
}

.password-strength {
  margin-top: 0.5rem;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.password-strength-bar {
  height: 100%;
  width: 0%;
  transition: var(--transition-base);
  border-radius: var(--radius-full);
}

.password-strength-bar.weak {
  width: 33%;
  background: var(--error);
}

.password-strength-bar.medium {
  width: 66%;
  background: var(--warning);
}

.password-strength-bar.strong {
  width: 100%;
  background: var(--success);
}

.password-strength-text {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

.checkbox-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.checkbox-wrapper input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  margin-top: 0.125rem;
  flex-shrink: 0;
}

.checkbox-wrapper label {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  line-height: 1.5;
}

.checkbox-wrapper label a {
  color: var(--primary-color);
  text-decoration: none;
}

.checkbox-wrapper label a:hover {
  text-decoration: underline;
}

.btn-register {
  width: 100%;
  padding: 1rem;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: var(--font-size-md);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-base);
  margin-bottom: 1rem;
}

.btn-register:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-register:active {
  transform: translateY(0);
}

.btn-register:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.divider {
  display: flex;
  align-items: center;
  margin: 1.5rem 0;
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--text-muted);
}

.divider span {
  padding: 0 1rem;
}

.social-login {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.btn-social {
  padding: 0.875rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--text-muted);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-social:hover {
  background: var(--bg-secondary);
  border-color: var(--text-secondary);
}

.btn-social i {
  font-size: 1.25rem;
}

.btn-google i {
  color: #ea4335;
}

.btn-facebook i {
  color: #1877f2;
}

.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.auth-footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

.auth-footer a:hover {
  color: var(--primary-light);
}

.referral-info {
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.referral-info i {
  color: var(--success);
  font-size: 1.5rem;
}

.referral-info-text {
  flex: 1;
}

.referral-info-text h4 {
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.referral-info-text p {
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
}

@media (max-width: 768px) {
  .auth-card {
    padding: 2rem 1.5rem;
  }
  .social-login {
    grid-template-columns: 1fr;
  }
}