:root {
    --bg: #0f1115;
    --fg: #eaeaea;
    --muted: #9aa0a6;
    --accent: #ffffff;
  }
  
  * {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Inter", system-ui, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.5;
  }
  
  .container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
  }
  
  .hero {
    max-width: 560px;
    width: 100%;
  }
  
  h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
  }
  
  .subtitle {
    color: var(--muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
  }
  
  .newsletter {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
  }

  .newsletter-inputs {
    display: flex;
    gap: 0.75rem;
  }
  
  .newsletter input {
    flex: 1;
    padding: 0.75rem 0.9rem;
    border-radius: 6px;
    border: 1px solid #2a2d34;
    background: #16181d;
    color: var(--fg);
    font-size: 1rem;
    transition: border-color 0.2s ease;
  }

  .newsletter input:focus {
    outline: none;
    border-color: var(--accent);
  }
  
  .newsletter input::placeholder {
    color: var(--muted);
  }
  
  .newsletter button {
    padding: 0.75rem 1.1rem;
    border-radius: 6px;
    border: none;
    background: var(--accent);
    color: #000;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.1s ease;
  }
  
  .newsletter button:hover {
    opacity: 0.9;
  }

  .newsletter button:active {
    transform: scale(0.98);
  }

  .newsletter button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
  }

  .newsletter-message {
    font-size: 0.9rem;
    margin-top: 0.5rem;
    min-height: 1.4rem;
  }

  .newsletter-message.success {
    color: #4ade80;
  }

  .newsletter-message.error {
    color: #f87171;
  }

  @media (max-width: 600px) {
    .newsletter-inputs {
      flex-direction: column;
    }
  }
  
  .fine-print {
    font-size: 0.85rem;
    color: var(--muted);
  }
  
  .footer {
    position: fixed;
    bottom: 1rem;
    width: 100%;
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
  }