/* ===== Mobile-first reset ===== */
* {
    box-sizing: border-box;
  }
  
  html {
    -webkit-text-size-adjust: 100%;
  }
  
  body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont,
      "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
    background: #f3f4f6;
    color: #111827;
    line-height: 1.65;
  }
  
  /* ===== Layout ===== */
  .container {
    padding: 32px 24px 40px;
    max-width: 100%;
  }
  
  /* ===== Header ===== */
  h1 {
    font-size: 2.05rem; /* ↑ 50% */
    font-weight: 600;
    margin-bottom: 12px;
  }
  
  .subtitle {
    font-size: 1.35rem; /* ↑ 50% */
    color: #6b7280;
    margin-bottom: 30px;
  }
  
  /* ===== Form ===== */
  form {
    display: flex;
    flex-direction: column;
    gap: 22px;
  }
  
  label {
    font-size: 1.2rem; /* ↑ 50% */
    font-weight: 600;
    margin-bottom: 8px;
    display: block;
  }
  
  input {
    width: 100%;
    padding: 22px 18px;
    font-size: 1.5rem; /* ↑ 50% */
    border-radius: 16px;
    border: 1px solid #d1d5db;
    background: #ffffff;
  }
  
  input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
  }
  
  /* ===== Button ===== */
  button {
    margin-top: 16px;
    padding: 26px;
    font-size: 1.5rem; /* ↑ 50% */
    font-weight: 600;
    border-radius: 18px;
    border: none;
    color: #ffffff;
    background: #2563eb;
    cursor: pointer;
  }
  
  button:active {
    transform: scale(0.97);
  }
  
  /* ===== Results ===== */
  .results {
    margin-top: 40px;
  }
  
  .results h2 {
    font-size: 1.6rem; /* ↑ 50% */
    margin-bottom: 18px;
  }
  
  .school {
    padding: 22px;
    border-radius: 18px;
    background: #ffffff;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
    margin-bottom: 18px;
  }
  
  .school strong {
    display: block;
    font-size: 1.4rem; /* ↑ 50% */
    font-weight: 600;
  }
  
  .school span {
    font-size: 1.2rem; /* ↑ 50% */
    color: #6b7280;
  }
  
  /* ===== Tablet and up ===== */
  @media (min-width: 640px) {
    body {
      background: #eef2f7;
    }
  
    .container {
      max-width: 640px;
      margin: 48px auto;
      padding: 40px;
      background: #ffffff;
      border-radius: 22px;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.1);
    }
  }
  
  /* ===== Desktop refinement ===== */
  @media (min-width: 1024px) {
    .container {
      max-width: 700px;
    }
  }