:root {
  --primary-color: #2c3e50;
  --secondary-color: #34495e;
  --accent-color: #3498db;
  --background-color: #ecf0f1;
  --text-color: #2c3e50;
  --light-text-color: #7f8c8d;
}

*,
body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
}

header {
  background-color: var(--primary-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  padding: 1rem 0;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
}

.navbar-nav .nav-link {
  color: #ffffff;
  font-weight: 500;
  font-size: 1rem;
  transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
  color: var(--accent-color);
}

.hero {
  background-color: var(--secondary-color);
  color: #ffffff;
  padding: 6rem 0;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 2rem;
  line-height: 1.2;
}

.features {
  list-style-type: none;
  padding: 0;
  margin-bottom: 2rem;
}

.features li {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.features li::before {
  content: "✓";
  margin-right: 0.5rem;
  color: var(--accent-color);
}

.valuation-form {
  background-color: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  padding: 2.5rem;
  border-radius: 10px;
  transition: all 0.3s ease;
}

.valuation-form:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
}

.valuation-form h2 {
  color: #ffffff;
  margin-bottom: 1.5rem;
  font-size: 2rem;
  font-weight: 700;
}

.btn-primary {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #ffffff;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: #2980b9;
  border-color: #2980b9;
  transform: translateY(-2px);
}

.welcome {
  background-color: #ffffff;
  color: var(--text-color);
  padding: 6rem 0;
}

.welcome h2 {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  font-size: 2.5rem;
  font-weight: 700;
}

.welcome p {
  color: var(--light-text-color);
  line-height: 1.8;
  font-size: 1.1rem;
}

.how-to-sell {
  background-color: var(--secondary-color);
  padding: 6rem 0;
  text-align: center;
  color: #ffffff;
}

.how-to-sell h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 4rem;
}

.steps-container {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
}

.step {
  flex-basis: 30%;
  margin-bottom: 3rem;
  padding: 2rem;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  transition: all 0.3s ease;
}

.step:hover {
  transform: translateY(-10px);
  background-color: rgba(255, 255, 255, 0.2);
}

.step-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent-color);
}

.step h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.step p {
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
  .hero, .welcome, .how-to-sell {
    padding: 4rem 0;
  }
  
  h1, .welcome h2, .how-to-sell h2 {
    font-size: 2rem;
  }
  
  .step {
    flex-basis: 100%;
  }

  /* New styles for mobile layout */
  .hero .row {
    display: flex;
    flex-direction: column;
  }

  .hero .col-lg-6:nth-child(2) {
    order: -1;
    margin-bottom: 2rem;
  }

  .valuation-form {
    margin-bottom: 2rem;
  }

  h1 {
    font-size: 2.5rem;
    margin-top: 2rem;
  }

  .features {
    margin-bottom: 0;
  }
}