:root {
  --primary: #333333;
  --secondary: #0066FF;
  --background: #FFFFFF;
  --footer-bg: #333333;
  --button: #0066FF;
  --section-bg-1: #F5F5F5;
  --section-bg-2: #E9E9E9;
  --section-bg-3: #DEDEDE;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-light: #FFFFFF;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Roboto:wght@300;400;500;700&display=swap');

body {
  font-family: 'Inter', 'Roboto', 'Helvetica Neue', sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.025em;
  margin-bottom: 0.75em;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.75rem;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.5em;
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary);
}

.section-bg-1 {
  background-color: var(--section-bg-1);
}

.section-bg-2 {
  background-color: var(--section-bg-2);
}

.section-bg-3 {
  background-color: var(--section-bg-3);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--button);
  color: white;
  border-radius: 0.375rem;
  font-weight: 500;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background-color: var(--primary);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--button);
  color: var(--button);
}

.btn-outline:hover {
  background-color: var(--button);
  color: white;
}

.card {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.navbar {
  background-color: var(--background);
  box-shadow: var(--shadow-sm);
}

.footer {
  background-color: var(--footer-bg);
  color: var(--text-light);
  padding: 3rem 0;
}

.footer a {
  color: var(--text-light);
  opacity: 0.8;
}

.footer a:hover {
  opacity: 1;
}

.input {
  padding: 0.75rem 1rem;
  border: 1px solid #e2e8f0;
  border-radius: 0.375rem;
  transition: var(--transition);
}

.input:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 0.625rem 1.25rem;
  }
}