/* Base Reset & Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;      
  color: #333;                     
  line-height: 1.6;
  padding: 20px;
  margin: 10px;                    /* Assignment requirement: 10px margin */
}

/* Assignment Required Formatting */
h1, nav, footer {
  text-align: center; /* Center header, nav, footer */
}

/* Header */
header {
  background-color: #1a851f;
  color: white;
  padding: 20px 10px;
  margin-bottom: 20px;
}

header h1 {
  font-size: 2em;
}

/* Navigation */
nav {
  background-color: #e0e0e0;
  padding: 12px;
  margin-bottom: 30px;
  border-radius: 4px;
}

nav a {
  color: #001e72;
  text-decoration: none;
  margin: 0 15px;
  font-weight: bold;
  font-size: 1.1em;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #ff6600;
}

/* Main Content */
main {
  max-width: 1000px;
  margin: 0 auto 40px auto;
  background-color: #fff;
  padding: 25px;
  border-radius: 6px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h2, h3, h4 {
  margin-bottom: 15px;
  color: #1a1a1a;
}

p {
  margin-bottom: 20px;
  font-size: 1em;
}

/* Table Styling */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 25px 0;
  font-size: 0.95em;
  border-radius: 5px;
  overflow: hidden;
  box-shadow: 0 0 5px rgba(0,0,0,0.05);
}

th, td {
  padding: 12px 15px;
  border: 1px solid #ccc;
  text-align: left;
}

th {
  background-color: #f2f2f2;
  font-weight: bold;
}

/* Footer */
footer {
  background-color: #3d810f;
  color: white;
  padding: 15px 10px;
  font-size: 0.9em;
  border-radius: 0 0 5px 5px;
}

/* Sidebar */
.sidebar {
  background-color: #eeeeee;
  padding: 15px;
  max-width: 300px;
  margin: 20px auto;
  border-radius: 5px;
  font-size: 0.95em;
}

/* Media Content (Video Embed) */
.media-container {
  max-width: 600px;
  margin: 30px auto;
  text-align: center;
}

.media-container iframe {
  width: 100%;
  height: 340px; /* Set height to keep aspect ratio */
  border: 3px solid #1a851f; /* Custom border around video */
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(26, 133, 31, 0.6); /* subtle glow effect */
}

/* Images & Figures */
.gallery img {
  max-width: 100%;
  height: auto;
  border: 1px solid #ccc;
  margin-bottom: 10px;
  border-radius: 4px;
}

figure {
  margin: 10px auto;
  max-width: 600px;
  text-align: center;
}

figcaption {
  font-style: italic;
  font-size: 0.9em;
  color: #666;
  margin-top: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
  nav a {
    display: block;
    margin: 10px 0;
  }

  main, .sidebar {
    padding: 10px;
  }

  .media-container iframe {
    height: 200px; /* Adjust video height for smaller screens */
  }
}

/* PC Parts Section */
.pc_parts {
  max-width: 700px;
  margin: 40px auto;
  background-color: #fff;
  padding: 20px 25px;
  border-radius: 6px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  text-align: center;
}

.pc_parts h2 {
  margin-bottom: 25px;
  color: #1a851f; /* same green as header for emphasis */
}

.pc_parts figure {
  margin: 20px auto;
  max-width: 600px;
}

.pc_parts img {
  max-width: 100%;
  height: auto;
  border: 2px solid #1a851f;
  border-radius: 6px;
  box-shadow: 0 0 8px rgba(26, 133, 31, 0.3);
}

.pc_parts figcaption {
  font-style: italic;
  font-size: 0.9em;
  color: #444;
  margin-top: 8px;
}