* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  margin: 0;
  padding: 20px;
  min-height: 100vh;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.container {
  background: white;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.logo {
  width: 120px;
  height: auto;
  margin-bottom: 1.5rem;
}

.company-name {
  color: #1a1a1a;
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.description {
  color: #666;
  margin-bottom: 2rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.domain-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.input-field {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e1e1e1;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
  outline: none;
}

.input-field:focus {
  border-color: #0066cc;
}

.input-field::placeholder {
  color: #999;
}

.login-button {
  display: inline-block;
  background-color: #0066cc;
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: background-color 0.3s ease;
  width: 100%;
}

.login-button:hover {
  background-color: #0052a3;
}

.error-message {
  color: #dc3545;
  background-color: #ffeaea;
  padding: 12px;
  border-radius: 6px;
  margin: 1rem 0;
  font-size: 0.9rem;
  text-align: left;
  border: 1px solid #ffcdd2;
}

.info-message {
  color: #666;
  font-size: 0.85rem;
  margin-top: 1rem;
}

.platform-badge {
  position: fixed;
  top: 16px;
  right: 16px;
  background: rgba(0, 0, 0, 0.1);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  color: #666;
  backdrop-filter: blur(4px);
}

.loading {
  display: none;
  margin: 0 auto;
  width: 24px;
  height: 24px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid #0066cc;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.footer {
  margin-top: 2rem;
  color: #666;
  font-size: 0.8rem;
  text-align: center;
}

@media (max-width: 480px) {
  .container {
    padding: 1.5rem;
  }

  .company-name {
    font-size: 1.5rem;
  }

  .platform-badge {
    top: 12px;
    right: 12px;
  }
}