/* ===== Variables ===== */
:root {
    --primary-color: #2563eb;       /* Professional blue */
    --secondary-color: #4b5563;     /* Soft gray */
    --background-color: #f8f9fa;    /* Light off-white */
    --text-color: #1f2937;          /* Dark gray */
    --accent-color: #3b82f6;        /* Bright blue */
    --border-radius: 8px;
    --box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }
  
  /* ===== Base Styles ===== */
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  /* ===== Navigation ===== */
  nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: #ffffff;
    box-shadow: var(--box-shadow);
    z-index: 1000;
  }
  
  .logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
  }
  
  .nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
  }
  
  .nav-links a {
    color: var(--text-color); /* Always visible dark gray */
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
  }
  
  .nav-links a:hover {
    color: var(--primary-color); /* Blue on hover */
  }
  
  /* Remove the ::after pseudo-element for underline */
  .nav-links a::after {
    display: none; /* Disable the underline effect */
  }
  
  .contact-link {
    background: var(--primary-color);
    color: white !important;
    padding: 0.6rem 1.5rem;
    border-radius: 30px;
    margin-left: 2rem;
    transition: all 0.3s ease;
  }
  
  .contact-link:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
  }
  
  /* ===== Responsive Navigation ===== */
  @media (max-width: 768px) {
    nav {
      padding: 1rem 5%;
    }
  
    .nav-links {
      gap: 1rem;
    }
  
    .nav-links a {
      font-size: 0.9rem;
    }
  
    .contact-link {
      margin-left: 1rem;
      padding: 0.5rem 1rem;
    }
  }
  
  /* ===== Hero Section ===== */
  .hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 5%;
    margin-top: 4rem;
  }
  
  .hero-content {
    max-width: 800px;
  }
  
  .hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.3;
  }
  
  .hero p {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
  }
  
  /* ===== Section Styling ===== */
  .section {
    padding: 6rem 5%;
  }
  
  .section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
  }
  
  /* ===== Card Layouts ===== */
  .grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    margin: 2rem 0;
  }
  
  .card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: transform 0.2s ease;
  }
  
  .card:hover {
    transform: translateY(-5px);
  }
  
  /* ===== Buttons ===== */
  .btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
  }
  
  .btn-primary {
    background: var(--primary-color);
    color: white;
  }
  
  .btn-primary:hover {
    background: var(--accent-color);
  }
  
  /* ===== Contact Page ===== */
  .contact-grid {
    display: grid;
    gap: 3rem;
    grid-template-columns: 1fr 1fr;
  }
  
  .contact-info {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
  }
  
  .contact-form input,
  .contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    margin-bottom: 1rem;
  }
  
  /* ===== Error Page ===== */
  .error-container {
    text-align: center;
    padding: 4rem 2rem;
  }
  
  .error-container h1 {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
  }
  
  /* ===== Responsive Design ===== */
  @media (max-width: 768px) {
    .hero h1 {
      font-size: 2rem;
    }
  
    .contact-grid {
      grid-template-columns: 1fr;
    }
  }