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

body {
  font-family: "Inter", sans-serif;
  background: #fafafa;
  color: #333;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  max-width: 600px;
  width: 100%;
  padding: 2rem;
  text-align: center;
}

header {
  margin-bottom: 4rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: #000;
  letter-spacing: -0.02em;
}

main {
  margin-bottom: 4rem;
}

h1 {
  font-size: 3rem;
  font-weight: 600;
  color: #000;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

p {
  font-size: 1.125rem;
  color: #666;
  margin-bottom: 3rem;
  font-weight: 400;
}

.email-form {
  display: flex;
  gap: 0.75rem;
  max-width: 400px;
  margin: 0 auto;
}

input[type="email"] {
  flex: 1;
  padding: 0.875rem 1rem;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  transition: border-color 0.2s ease;
}

input[type="email"]:focus {
  outline: none;
  border-color: #000;
}

input[type="email"]::placeholder {
  color: #999;
}

button {
  padding: 0.875rem 1.5rem;
  background: #000;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

button:hover {
  background: #333;
}

button:disabled {
  background: #ccc;
  cursor: not-allowed;
}

footer {
  border-top: 1px solid #e5e5e5;
  padding-top: 2rem;
}

footer p {
  font-size: 0.875rem;
  color: #999;
  margin: 0;
}

/* Responsive */
@media (max-width: 640px) {
  .container {
    padding: 1.5rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  .email-form {
    flex-direction: column;
  }

  button {
    width: 100%;
  }
}

/* Subtle animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.container {
  animation: fadeIn 0.6s ease-out;
}

/* Focus states */
input[type="email"]:focus {
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}