:root {
  --irks-blue: #00002d;
  --irks-yellow: #ffff00;
  --irks-red: #ff0000;
  --bg-color: #f8f9fa;
  --text-color: #333333;
  --header-bg: #0000a0;
  --nav-hover: #000060;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  background-image: url('/images/bk.png');
  background-attachment: fixed;
  background-position: center center;
  background-size: cover;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Typography */
h1, h2, h3 {
  font-family: "Copperplate Gothic Bold", "Arial Black", sans-serif;
  color: var(--irks-blue);
  margin-bottom: 1rem;
}

.text-center {
  text-align: center;
}

.text-red {
  color: var(--irks-red);
}

.text-yellow {
  color: var(--irks-yellow);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0; /* Changed padding to 0 */
}

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  padding: 2rem 0;
}

/* Header Specific */
.site-header {
  padding: 1rem 0;
  color: #fff;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container .logo {
  height: 80px; /* Adjust as needed */
}

.main-nav {
  display: flex; /* Ensure main-nav is a flex container for large screens */
}

.main-nav .nav-list {
  display: flex;
  list-style: none;
}

.main-nav .nav-link {
  color: #fff;
  padding: 0.5rem 1rem;
  display: block;
  transition: background-color 0.3s ease;
  font-weight: bold;
}

.main-nav .nav-link:hover,
.main-nav .nav-link.active {
  background-color: var(--nav-hover);
  border-radius: 5px;
}

/* Hamburger menu styles */
.hamburger-menu {
  display: none; /* Hidden by default, shown on small screens */
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1000;
}

.hamburger-menu:focus {
  outline: none;
}

.hamburger-icon {
  width: 100%;
  height: 3px;
  background-color: #fff;
  border-radius: 2px;
  transition: all 0.3s linear;
  position: relative;
}

/* Responsive styles */
@media (max-width: 768px) {
  .header-container {
    display: flex; /* Ensure flex behavior */
    flex-wrap: nowrap; /* Prevent wrapping */
    justify-content: space-between; /* Space out logo and hamburger */
    align-items: center; /* Vertically align items */
    gap: 1rem;
  }

  .logo-container {
    flex-grow: 0; /* Don't grow */
    flex-shrink: 0; /* Don't shrink */
    flex-basis: auto; /* Width determined by content */
    text-align: left; /* Ensure logo aligns left if it was centered */
  }

  .hamburger-menu {
    display: flex;
  }

  .main-nav {
    display: none; /* Hide regular nav by default on small screens */
    flex-basis: 100%;
    background-color: var(--header-bg);
    position: absolute;
    top: 100px; /* Adjust based on header height */
    left: 0;
    width: 100%;
    text-align: center;
    padding-bottom: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    z-index: 999;
  }

  .main-nav.open {
    display: block; /* Show nav when open */
  }

  .main-nav .nav-list {
    flex-direction: column;
  }

  .main-nav .nav-link {
    padding: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .main-nav .nav-link:last-child {
    border-bottom: none;
  }
}