/* Base Variables */
:root {
  --font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --primary-color: #0056b3; /* GRC's signature blue */
  --secondary-color: #6c757d; /* Neutral gray */
  --accent-color: #28a745; /* A vibrant green for highlights */
  --bg-color-light: #ffffff; /* Light mode background */
  --text-color-light: #000000; /* Light mode text */
  --bg-color-dark: #121212; /* Dark mode background */
  --text-color-dark: #e0e0e0; /* Dark mode text */
}

/* Light Mode Styles */
body {
  background-color: var(--bg-color-light);
  color: var(--text-color-light);
  font-family: var(--font-family);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  body {
    background-color: var(--bg-color-dark);
    color: var(--text-color-dark);
  }
}

/* Header */
.header {
  background-color: var(--primary-color);
  color: var(--text-color-light);
  padding: 20px;
  text-align: center;
  border-bottom: 4px solid var(--accent-color);
}

.header h1 {
  margin: 0;
  font-size: 2.5em;
}

.header p {
  margin-top: 10px;
  font-size: 1.2em;
}

/* Navigation Bar */
.navbar {
  display: flex;
  justify-content: center;
  background-color: var(--secondary-color);
  padding: 10px 0;
}

.navbar a {
  color: var(--text-color-light);
  text-decoration: none;
  margin: 0 20px;
  font-weight: bold;
  position: relative;
  padding-bottom: 5px;
}

.navbar a::after {
  content: "";
  position: absolute;
  width: 0%;
  height: 2px;
  background-color: var(--accent-color);
  bottom: 0;
  left: 0;
  transition: width 0.3s;
}

.navbar a:hover::after {
  width: 100%;
}

/* Main Content */
.container {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}

.container h2 {
  color: var(--primary-color);
  font-size: 2em;
  margin-bottom: 20px;
}

.container p {
  margin-bottom: 20px;
  text-align: justify;
}

.container .button {
  background-color: var(--primary-color);
  color: var(--text-color-light);
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.3s;
}

.container .button:hover {
  background-color: var(--accent-color);
}

/* Footer */
.footer {
  background-color: var(--secondary-color);
  color: var(--text-color-light);
  text-align: center;
  padding: 20px;
  margin-top: 40px;
}

.footer p {
  margin: 0;
}

/* WebKit-Specific Styles */
@media screen and (-webkit-min-device-pixel-ratio:0) {
  /* Custom Scrollbar */
  ::-webkit-scrollbar {
    width: 12px;
  }

  ::-webkit-scrollbar-track {
    background: var(--bg-color-light);
  }

  ::-webkit-scrollbar-thumb {
    background-color: var(--secondary-color);
    border-radius: 10px;
    border: 3px solid var(--bg-color-light);
  }

  @media (prefers-color-scheme: dark) {
    ::-webkit-scrollbar-track {
      background: var(--bg-color-dark);
    }

    ::-webkit-scrollbar-thumb {
      background-color: var(--accent-color);
      border: 3px solid var(--bg-color-dark);
    }
  }
}

/* Responsive Media Queries */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
  }

  .navbar a {
    margin: 10px 0;
  }

  .header h1 {
    font-size: 2em;
  }

  .container {
    padding: 0 10px;
  }
}

/* Forms */
input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  border: 1px solid var(--secondary-color);
  border-radius: 5px;
}

input[type="submit"] {
  background-color: var(--primary-color);
  color: var(--text-color-light);
  padding: 12px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

input[type="submit"]:hover {
  background-color: var(--accent-color);
}

/* Links */
a {
  color: var(--primary-color);
  transition: color 0.3s;
}

a:hover {
  color: var(--accent-color);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

table th,
table td {
  border: 1px solid var(--secondary-color);
  padding: 12px 15px;
  text-align: left;
}

table th {
  background-color: var(--primary-color);
  color: var(--text-color-light);
}

@media (prefers-color-scheme: dark) {
  table th {
    background-color: var(--secondary-color);
  }
}

/* Code Blocks */
pre {
  background-color: #f4f4f4;
  padding: 15px;
  overflow-x: auto;
  border-radius: 5px;
}

code {
  background-color: #f4f4f4;
  padding: 2px 4px;
  border-radius: 3px;
}

@media (prefers-color-scheme: dark) {
  pre,
  code {
    background-color: #2d2d2d;
    color: var(--text-color-dark);
  }
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
  border: 2px solid var(--secondary-color);
}

/* Lists */
ul,
ol {
  margin: 20px 0;
  padding-left: 40px;
}

li {
  margin-bottom: 10px;
}

/* Blockquotes */
blockquote {
  border-left: 5px solid var(--primary-color);
  padding-left: 15px;
  margin: 20px 0;
  color: var(--secondary-color);
  font-style: italic;
}

@media (prefers-color-scheme: dark) {
  blockquote {
    border-left-color: var(--accent-color);
    color: var(--text-color-dark);
  }
}

/* Highlighted Text */
.mark {
  background-color: var(--accent-color);
  color: var(--text-color-light);
  padding: 0 5px;
  border-radius: 3px;
}

@media (prefers-color-scheme: dark) {
  .mark {
    background-color: var(--primary-color);
  }
}