/* Reset & base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', Helvetica, sans-serif;
  color: #1F2937; /* Gray-800 */
  background: #FFFFFF;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem;
}

header .logo {
  font-weight: 700;
  font-size: 1.5rem;
  color: #4F46E5; /* Indigo */
}

header nav a {
  margin-left: 1rem;
  text-decoration: none;
  color: #1F2937;
  font-size: 0.9rem;
}

.hero {
  text-align: center;
  padding: 4rem 2rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #4B5563; /* Gray-700 */
}

.shorten-form {
  display: flex;
  justify-content: center;
  max-width: 600px;
  margin: 0 auto 1rem;
}

.shorten-form input {
  flex: 1;
  padding: 1rem;
  font-size: 1rem;
  border: 2px solid #E5E7EB; /* Gray-200 */
  border-radius: 9999px 0 0 9999px;
  outline: none;
}

.shorten-form button {
  padding: 1rem 2rem;
  background: #4F46E5; /* Indigo */
  color: #FFFFFF;
  font-size: 1rem;
  border: none;
  border-radius: 0 9999px 9999px 0;
  cursor: pointer;
  transition: background 0.2s ease;
}

.shorten-form button:hover {
  background: #4338CA; /* Darker Indigo */
}

.hero small {
  display: block;
  margin-top: 1rem;
  color: #6B7280; /* Gray-500 */
}

.how-it-works {
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 4rem 2rem;
  flex-wrap: wrap;
}

.step {
  text-align: center;
  max-width: 150px;
}

.icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

footer {
  margin-top: auto;
  background: #F9FAFB; /* Light Gray */
  text-align: center;
  padding: 2rem;
}

footer nav a {
  margin: 0 0.5rem;
  text-decoration: none;
  color: #6B7280; /* Gray-500 */
  font-size: 0.9rem;
}

footer p {
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  color: #9CA3AF; /* Gray-400 */
}

@media (max-width: 600px) {
  .shorten-form {
    flex-direction: column;
  }

  .shorten-form input,
  .shorten-form button {
    border-radius: 9999px;
    width: 100%;
  }

  .shorten-form button {
    margin-top: 1rem;
  }

  .how-it-works {
    flex-direction: column;
    align-items: center;
  }
}