:root {
  --primary-bg-color: #0A192F;
  --secondary-color: #FFD700;
  --text-color: #FFFFFF;
  --link-color: #FFFFFF;
  --link-hover-color: #FFD700;
  --font-family: 'Arial', sans-serif;
  --header-height-desktop: 70px; /* Estimated total height for desktop header */
  --header-height-mobile-first-row: 70px; /* Estimated height for mobile top row (hamburger/logo) */
  --header-height-mobile-second-row: 50px; /* Estimated height for mobile second row (auth buttons) */
}

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-color);
  background-color: #1a1a1a; /* A slightly darker background for contrast */
  padding-top: var(--header-height-desktop); /* Add padding to body to prevent content from hiding under fixed header */
}

body.no-scroll {
  overflow: hidden;
}

a {
  text-decoration: none;
  color: var(--link-color);
}

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

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
.site-header {
  background-color: var(--primary-bg-color);
  padding: 15px 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  position: fixed; /* Make header sticky */
  top: 0;
  width: 100%;
  z-index: 1000;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap; /* Prevent wrapping on desktop */
}

.logo {
  font-size: 2.2em;
  font-weight: bold;
  color: var(--secondary-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.3s ease;
  order: unset; /* Reset order for desktop */
  margin: 0; /* Reset margin for desktop */
  text-align: left; /* Reset text align for desktop */
}

.logo:hover {
  color: #fff;
}

.main-nav {
  display: block; /* Ensure nav is visible on desktop */
  margin-left: auto; /* Push nav and following elements to the right */
  order: unset; /* Reset order for desktop */
}

.main-nav .nav-list {
  display: flex;
  gap: 25px;
}

.main-nav .nav-link {
  font-size: 1.1em;
  font-weight: 500;
  padding: 5px 0;
  position: relative;
  transition: color 0.3s ease;
}

.main-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0%;
  height: 2px;
  background-color: var(--secondary-color);
  transition: width 0.3s ease;
}

.main-nav .nav-link:hover::after,
.main-nav .nav-link.current-page::after {
  width: 100%;
}

.main-nav .nav-link.current-page {
  color: var(--secondary-color);
}

.auth-buttons {
  display: flex; /* Display buttons side-by-side on desktop */
  gap: 10px; /* Space between buttons */
  margin-left: 20px; /* Space between nav and buttons on desktop */
  order: unset; /* Reset order for desktop */
  width: auto; /* Reset width for desktop */
  justify-content: flex-start; /* Reset justify for desktop */
  margin-top: 0; /* Reset margin for desktop */
}

.auth-buttons .btn {
  display: inline-block;
  padding: 8px 15px;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease;
  white-space: nowrap; /* Prevent buttons from wrapping text */
  font-size: 0.95em;
}

.auth-buttons .register-btn {
  background-color: var(--secondary-color);
  color: var(--primary-bg-color); /* Dark text on golden background */
  border: 1px solid var(--secondary-color);
}

.auth-buttons .register-btn:hover {
  background-color: #FFEB80; /* Lighter gold on hover */
  color: var(--primary-bg-color);
}

.auth-buttons .login-btn {
  background-color: transparent;
  color: var(--secondary-color);
  border: 1px solid var(--secondary-color);
}

.auth-buttons .login-btn:hover {
  background-color: var(--secondary-color);
  color: var(--primary-bg-color);
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  order: unset; /* Reset order for desktop */
}

.hamburger-menu .bar {
  width: 100%;
  height: 3px;
  background-color: var(--secondary-color);
  border-radius: 10px;
  transition: all 0.3s ease;
}

/* Footer Styles */
.site-footer {
  background-color: var(--primary-bg-color);
  color: var(--text-color);
  padding: 40px 0 20px;
  margin-top: 50px;
}

.site-footer .footer-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer h3 {
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-size: 1.3em;
}

.site-footer p,
.site-footer .nav-link {
  font-size: 0.95em;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.7);
}

.site-footer .nav-link:hover {
  color: var(--link-hover-color);
}

.site-footer .nav-list li:last-child a {
  margin-bottom: 0;
}

.site-footer .footer-bottom {
  text-align: center;
  padding-top: 20px;
}

.site-footer .copyright {
  font-size: 0.85em;
  color: rgba(255, 255, 255, 0.5);
}

/* Responsive Styles */
@media (max-width: 768px) {
  body {
    padding-top: calc(var(--header-height-mobile-first-row) + var(--header-height-mobile-second-row)); /* Adjust body padding for mobile two-row header */
  }

  .site-header .container {
    flex-wrap: wrap; /* Allow items to wrap to next line */
    justify-content: space-between; /* To push hamburger left, logo center */
    padding-bottom: 0; /* Reset desktop padding */
  }

  .hamburger-menu {
    display: flex; /* Show hamburger menu */
    order: 1; /* Position on the far left */
    z-index: 1001;
  }

  .logo {
    order: 2; /* Position centered */
    margin: 0 auto; /* Center the logo horizontally */
    flex-grow: 0; /* Prevent logo from taking full width */
    text-align: center; /* Ensure text is centered within its box */
  }

  .auth-buttons {
    order: 3; /* Position below the logo */
    width: 100%; /* Take full width for a new row */
    justify-content: center; /* Center buttons within the full width */
    margin-top: 15px; /* Space between logo and buttons */
    margin-left: 0; /* Reset desktop margin */
  }

  .main-nav {
    display: none; /* Hide navigation by default on mobile */
    flex-direction: column;
    width: 100%;
    background-color: var(--primary-bg-color);
    position: fixed; /* Make it fixed to viewport */
    top: calc(var(--header-height-mobile-first-row) + var(--header-height-mobile-second-row)); /* Position below the entire mobile header */
    left: 0;
    padding: 20px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 999;
    height: calc(100vh - (var(--header-height-mobile-first-row) + var(--header-height-mobile-second-row))); /* Adjust height to fill remaining viewport */
    overflow-y: auto; /* Allow scrolling if menu content is long */
    order: 4; /* Place below all other header elements */
  }

  .main-nav.active {
    display: flex; /* Show when active */
  }

  .main-nav .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 15px;
  }

  .main-nav .nav-link {
    padding: 10px 0;
    width: fit-content;
  }

  .hamburger-menu.active .bar:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
  }

  .hamburger-menu.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger-menu.active .bar:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
  }

  .site-footer .footer-columns {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .site-footer .footer-col h3 {
    margin-top: 20px;
  }

  .site-footer .nav-list {
    padding: 0;
  }
}