/* ===============================
   ROOT VARIABLES
================================ */
:root {
    --primary: #1e40af;
    --secondary: #0f172a;
    --bg: #f8fafc;
    --card: #ffffff;
    --accent: #22c55e;
    --text: #1f2937;
  }
  
  /* ===============================
     RESET & BASE
  ================================ */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  }
  
  body {
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
  }
  
  /* ===============================
     HEADER / HERO
  ================================ */
  header {
    background: linear-gradient(135deg, var(--primary), #2563eb);
    color: #fff;
    padding: 3rem 1.2rem;
    text-align: center;
  }
  
  header h1 {
    font-size: 2.1rem;
    margin-bottom: 0.8rem;
  }
  
  header p {
    max-width: 760px;
    margin: auto;
    font-size: 1.05rem;
    opacity: 0.95;
  }
  
  /* ===============================
     CTA BUTTON
  ================================ */
  .cta-btn {
    display: inline-block;
    margin-top: 1.4rem;
    padding: 0.8rem 1.6rem;
    background: var(--accent);
    color: #064e3b;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  
  .cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
  }
  
  /* ===============================
     SECTIONS
  ================================ */
  section {
    padding: 3rem 1.2rem;
    max-width: 1100px;
    margin: auto;
  }
  
  section h2 {
    text-align: center;
    font-size: 1.7rem;
    margin-bottom: 2rem;
    color: var(--secondary);
  }
  
  /* ===============================
     TOOL CARDS
  ================================ */
  .tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.4rem;
  }
  
  .tool-card {
    background: var(--card);
    border-radius: 14px;
    padding: 1.5rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.06);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }
  
  .tool-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
  }
  
  .tool-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
  }
  
  .tool-card p {
    font-size: 0.95rem;
    margin-bottom: 1rem;
  }
  
  .tool-card a {
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
  }
  
  /* ===============================
     EXAMS GRID
  ================================ */
  .exam-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.2rem;
  }
  
  .exam {
    background: #eef2ff;
    padding: 1.2rem;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    transition: background 0.2s ease;
  }
  
  .exam:hover {
    background: #e0e7ff;
  }
  
  /* ===============================
     FOOTER
  ================================ */
  footer {
    background: var(--secondary);
    color: #cbd5f5;
    padding: 2rem 1rem;
    text-align: center;
    font-size: 0.9rem;
  }
  
  footer a {
    color: #a5b4fc;
    text-decoration: none;
    margin: 0 0.5rem;
  }
  
  /* ===============================
     RESPONSIVE (MOBILE)
  ================================ */
  @media (max-width: 600px) {
    header h1 {
      font-size: 1.6rem;
    }
  
    section h2 {
      font-size: 1.4rem;
    }
  
    .tool-card {
      padding: 1.2rem;
    }
  }
  

  /* ===============================
   HEADER LOGO
================================ */
.header-inner {
    max-width: 1100px;
    margin: auto;
    text-align: center;
  }
  
  /* .site-logo {
    width: 160px;
    height: auto;
    margin-bottom: 1rem;
  } */
  
  /* Mobile adjustment */
  @media (max-width: 600px) {
    .site-logo {
      width: 130px;
    }
  }