body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f7f9fb;
  color: #222;
}

/* ---------- NAV ---------- */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 60px;
    background: white;
    border-bottom: 1px solid #ddd;
    font-size: 18px;
}

.nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #0077cc;
    font-weight: 600;
}

.nav strong {
    font-size: 24px;   
}

/* ---------- LAYOUT ---------- */
.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 60px);
}

.sidebar {
  background: white;
  border-right: 1px solid #ddd;
  padding: 20px;
}

.sidebar h3 {
  margin-top: 0;
}

.sidebar ul {
  list-style: none;
  padding-left: 0;
}

.sidebar li {
  margin: 8px 0;
  cursor: pointer;
  color: #0066cc;
}

.sidebar li:hover {
  text-decoration: underline;
}

.content {
  padding: 30px 40px;
}

.section-title {
  margin-top: 10px;
  border-bottom: 2px solid #ddd;
  padding-bottom: 6px;
}

/* ---------- TABLES ---------- */
.doc-table {
  border-collapse: collapse;
  width: 100%;
  max-width: 100%;
  margin-top: 15px;
}

th, td {
  border: 1px solid #ddd;
  padding: 8px 10px;
  text-align: left;
}

th {
  background: #f0f3f7;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 4px;
  color: white;
  text-decoration: none;
  font-size: 13px;
}

/* .btn-raw { background: #2ecc71; }
.btn-meta { background: #2ecc71; }
.btn-tsv { background: #2ecc71; }
.btn-msalign { background: #2ecc71; }
.btn-mgf { background: #2ecc71; } */

/* ---------- STATS ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.stat-card {
  background: rgb(221, 195, 195);
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 15px;
  text-align: center;
}

/*  download table */
.doc-table a {
    /* color: #0066cc; */
    text-decoration: none;
}

.doc-table a:hover {
    text-decoration: underline;
}
.download-card {
  background: white;
  padding: 20px;
  border: 1px solid #ddd;
  border-radius: 6px;
  margin-top: 25px;
}
.btn {
  display: inline-block;
  padding: 7px 14px;
  border-radius: 4px;
  color: white;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

.btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}
.sidebar li {
  margin: 6px 0;
  padding: 6px 10px;
  cursor: pointer;
  color: #0066cc;
  border-radius: 4px;
}

.sidebar li.active {
  background: #e6f0ff;
  color: #003d99;
  font-weight: 600;
}

.sidebar li:hover {
  background: #f0f5ff;
}
.dataset-header {
  background: white;
  padding: 16px 20px;
  border-left: 5px solid #0077cc;
  margin-bottom: 20px;
}
.download-link {
  color: #0066cc;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.download-link:hover {
  text-decoration: underline;
  color: #003d99;
}
a {
    text-decoration: none;
}

footer {
  text-align: center;
  padding: 30px;
  background: white;
  border-top: 1px solid #ddd;
}