/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #ffffff;
  color: #222;
  line-height: 1.6;
}
.container {
  width: 90%;
  max-width: 960px;
  margin: auto;
  padding: 20px;
}

ul, ol {
  padding-left: 40px;
  margin-left: 0;
  list-style-position: outside; /* default, bullets outside */
}


/* Header */
.header {
  background-color: #0b60b0;
  color: white;
  padding: 40px 0;
  text-align: center;
}
.header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}
.header .tagline {
  font-size: 1.2rem;
  opacity: 0.9;
}

/* Intro Section */
.intro-section {
  background: #f9f9f9;
  padding: 40px 0;
}
.intro-section h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: #0b60b0;
}
.intro-section p {
  margin-bottom: 20px;
  font-size: 1.05rem;
}

/* Links Section */
.links-section {
  padding: 40px 0;
}
.links-section h2 {
  font-size: 1.8rem;
  color: #0b60b0;
  margin-bottom: 20px;
}

/* Footer */
.footer {
  background-color: #0b60b0;
  color: white;
  text-align: center;
  padding: 20px 0;
  font-size: 0.9rem;
}

.nav {
  background-color: #1e3a8a; /* deep blue */
  padding: 0.5rem 0;
}

.nav-list {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.nav-list li a {
  text-decoration: none;
  color: #ffffff;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-list li a:hover {
  color: #93c5fd; /* light blue on hover */
}

.nav-list li a.active {
  border-bottom: 2px solid #ffffff;
  padding-bottom: 2px;
}


/************ table **********/

.heuristics-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.9rem;
      margin-top: 20px;
    }
    .heuristics-table th,
    .heuristics-table td {
      border: 1px solid #ccc;
      padding: 6px 10px;
      text-align: left;
      vertical-align: middle;
    }
    .heuristics-table th {
      background-color: #e0f0ff;
    }
   
/* Optional: hover effect for unselected buttons */
.radio-group label:hover {
  background-color: #cce5ff;
  border-color: #007bff;
}

    .range-labels {
      white-space: nowrap;
    }


    /*********** word grid ********/
    .word-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      gap: 0.5rem;
      margin-top: 1rem;
      margin-bottom: 2rem;
    }
    .word-grid label {
      display: block;
      padding: 6px;
      background: #f4f4f4;
      border-radius: 6px;
      cursor: pointer;
    }
    .word-grid input[type="checkbox"] {
      margin-right: 6px;
    }


/****************authors **********/
.authors {
    text-align: center;       /* centers the whole block */
    margin-top: 1.5em;        /* space above */
    margin-bottom: 1.5em;     /* space below */
    font-family: Georgia, serif;
}

.authors p {
    margin: 0.2em 0;          /* tight vertical spacing */
    font-size: 1.1em;
}

.authors .affiliation {
    font-size: 0.95em;
    color: #555;              /* softer grey for affiliation */
    font-style: italic;
}