body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #FFFFFF; /* white background for clean look */
  color: #000000; /* black text for readability */
}

header {
  background: #0079C2; /* primary blue header */
  color: #FFFFFF;
  padding: 1rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 2rem;
}

nav {
  margin-top: 1rem;
}

.tablink {
  background: #fff;
  color: #0079C2;
  border: 2px solid #0079C2;
  padding: 0.7rem 1.5rem;
  cursor: pointer;
  margin: 0 5px;
  font-size: 1rem;
  border-radius: 6px 6px 0 0;
  font-weight: 600;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  outline: none;
  box-shadow: none;
}

.tablink:hover {
  background: #e3f0ff;
  color: #0079C2;
  box-shadow: 0 2px 8px rgba(0,121,194,0.08);
}

.tablink.active {
  background: #0079C2;
  color: #fff;
  box-shadow: 0 2px 12px rgba(0,121,194,0.15);
  border-bottom: 2px solid #fff;
}

.tabcontent {
  display: none;
  padding: 2rem;
  background: #FFFFFF;
  margin: 1rem auto;
  max-width: 900px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

ul {
  padding-left: 20px;
}

.table-container {
  overflow-x: auto;
  margin-top: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

table th, table td {
  border: 1px solid #626D72;
  padding: 0.5rem;
  text-align: left;
}

table th {
  background-color: #0079C2; /* blue table header */
  color: #FFFFFF;
}

.feedback-link {
  display: inline-block;
  background: #0079C2;
  color: #FFFFFF;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.3s ease;
}

.feedback-link:hover {
  background: #FFC423; /* yellow hover */
  color: #000000;
}

@media (max-width: 600px) {
  .tablink {
    display: block;
    margin: 5px auto;
    width: 80%;
  }
}