/* General Reset and Base Styles */
* {
  box-sizing: border-box;
}

/* Body */
body {
  display: flex;
  flex-direction: column;
  height: 100vh;
  margin: 0;
  padding: 0;
  color: #161616;
  font-family: Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  background-color: #ffffff;
}

/* Header */
header {
  background-color: #f4f4f4;
  padding: 1em 0;
  text-align: center;
}

header ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  gap: 2em;
}

header ul li {
  display: inline;
}

header a {
  text-decoration: none;
  color: #333;
  font-weight: bold;
  transition: color 0.3s ease;
}

header a:hover {
  color: #007BFF;
}

/* Main Layout */
main {
  display: flex;
  flex: 1;
  min-height: 0; /* Enables child flex items to scroll properly */
}

/* Article (2/3 width) */
article {
  flex: 2;
  padding: 1em;
  overflow-y: auto;
}

/* Aside (1/3 width) */
aside {
  flex: 1;
  padding: 1em;
  background-color: #f9f9f9;
  border-left: 1px solid #ddd;
  overflow-y: auto;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1em;
  background-color: #fff;
}

th, td {
  padding: 0.75em;
  border: 1px solid #ccc;
  text-align: left;
}

th {
  background-color: #f0f0f0;
}

/* Footer */
footer {
  background-color: #f4f4f4;
  padding: 1em;
  text-align: center;
  font-size: 0.9em;
  color: #444;
}

footer a {
  color: #007BFF;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}
