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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: white;
  color: black;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
}

.logo img {
  width: 40px;
  height: 40px;
}

.logo h1 {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 20px;
  color: #666;
  margin-bottom: 64px;
  font-weight: 400;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
  max-width: 320px;
  margin-bottom: 32px;
}

.signup-form input {
  padding: 16px 20px;
  font-size: 16px;
  border: 2px solid #e1e1e1;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s ease;
  background: white;
}

.signup-form input:focus {
  border-color: black;
}

.signup-form input::placeholder {
  color: #999;
}

.submit-btn {
  padding: 16px 24px;
  font-size: 16px;
  font-weight: 500;
  background: black;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  outline: none;
}

.submit-btn:hover:not(:disabled) {
  background: #333;
  transform: translateY(-1px);
}

.submit-btn:active:not(:disabled) {
  transform: translateY(0);
}

.submit-btn:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.counter {
  font-size: 14px;
  color: #888;
  opacity: 0;
  transition: opacity 0.3s ease;
  margin-bottom: 48px;
}

.counter.show {
  opacity: 1;
}

.footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid #f0f0f0;
  margin-top: auto;
}

.footer p {
  font-size: 14px;
  color: #888;
  margin-bottom: 4px;
}

/* Mobile responsiveness */
@media (max-width: 480px) {
  .main-content {
    padding: 60px 20px;
  }
  
  .logo h1 {
    font-size: 28px;
  }
  
  .tagline {
    font-size: 18px;
    margin-bottom: 48px;
  }
  
  .signup-form {
    max-width: 100%;
  }
}

/* Success/Error states */
.submit-btn.success {
  background: #17bf63;
}

.submit-btn.error {
  background: #ff6b35;
}