/* =========================
   1. Reset & Global Styles
   ========================= */
   * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: 'Inter', sans-serif;
    background-color: #F9FAFB;
    color: #1F2937;
    line-height: 1.6;
  }
  
  /* =========================
     2. Header & Navigation
     ========================= */
  header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background-color: #fff;
    border-bottom: 1px solid #E5E7EB;
  }
  
  .logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: #4F46E5;
  }
  
  nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
  }
  
  nav a {
    text-decoration: none;
    color: #1F2937;
    font-weight: 500;
    padding: 0.5rem;
    transition: color 0.3s;
  }
  
  nav a:hover {
    color: #6366F1;
  }
  
  /* =========================
     3. Buttons
     ========================= */
  .btn-primary {
    background-color: #4F46E5;
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.3s;
    text-decoration: none;
  }
  
  .btn-primary:hover {
    background-color: #6366F1;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
  }
  
  /* =========================
     4. Hero Section
     ========================= */
  .hero {
    background: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%);
    color: #fff;
    text-align: center;
    padding: 5rem 1rem;
  }
  
  .hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
  }
  
  .hero p {
    max-width: 600px;
    margin: 0 auto 2rem;
    font-size: 1.125rem;
    color: #F9FAFB;
  }
  
  .btn-cta {
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
  }
  
  /* =========================
     5. Section Layout
     ========================= */
  section {
    padding: 4rem 1rem;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
  }
  
  /* =========================
     6. Card/Grid Styles
     ========================= */
  .tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
  }
  
  .tool-item {
    background-color: #fff;
    border: 1px solid #E5E7EB;
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    transition: box-shadow 0.3s, transform 0.3s;
  }
  
  .tool-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transform: translateY(-4px);
  }
  
  .tool-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
  }
  
  .tool-item p {
    font-size: 0.95rem;
    color: #4B5563;
    line-height: 1.4;
  }
  
  /* =========================
     7. Footer
     ========================= */
  footer {
    background-color: #fff;
    border-top: 1px solid #E5E7EB;
    padding: 2rem 1rem;
    text-align: center;
    font-size: 0.875rem;
    color: #6B7280;
    margin-top: 4rem;
  }
  
  footer a {
    color: #4F46E5;
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.3s;
  }
  
  footer a:hover {
    color: #6366F1;
  }