/* --- HEADER STYLES --- */

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

*:focus {
  outline: none;
}

/* --- HEADER --- */
.header-nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 1200px;
  padding: 15px 0;
  z-index: 100;
  background-color: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(5px);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

/* Header shrink effect for mobile */
.header-nav.header-shrink {
  top: 5px;
  width: 95%;
  padding: 8px 0;
  border-radius: 15px;
  backdrop-filter: blur(2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--text-main);
  transition: all 0.3s ease;
}

/* Shrink logo on header shrink */
.header-nav.header-shrink .logo {
  gap: 8px;
  font-size: 1rem;
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  transition: all 0.3s ease;
}

/* Shrink logo image on header shrink */
.header-nav.header-shrink .logo-img {
  width: 30px;
  height: 30px;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  transition: all 0.3s ease;
}

/* Hide nav links on header shrink */
.header-nav.header-shrink .nav-links {
  gap: 0.5rem;
  opacity: 1;
}

.social-card {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  background: transparent;
  padding: 0;
  border-radius: 0;
  transition: all 0.3s ease;
}

/* Reduce social card gap on header shrink */
.header-nav.header-shrink .social-card {
  gap: 0.3rem;
}

/* Navigation link styles */
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: color var(--transition-speed);
  position: relative;
}

.nav-links a:hover {
  color: var(--accent-primary);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--transition-speed);
}

.nav-links a:hover::after {
  width: 100%;
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 768px) {
  /* Adjust header height for mobile to prevent overlap */
  :root {
    --header-height: 180px; /* Increased to accommodate stacked mobile header */
  }

  /* Mobile header adjustments */
  .header-nav {
    top: 10px;
    width: 95%;
    border-radius: 20px;
    padding: 10px 0;
  }

  /* Mobile header shrink effect */
  .header-nav.header-shrink {
    top: 5px;
    padding: 5px 0;
    border-radius: 12px;
    backdrop-filter: blur(1px);
  }

  .header-content {
    flex-direction: column;
    gap: 1rem;
    padding: 0 15px;
  }

  /* Hide navigation links and social icons when header is shrunk on mobile */
  .header-nav.header-shrink .nav-links,
  .header-nav.header-shrink .social-card {
    display: none;
  }

  /* Center logo when header is shrunk */
  .header-nav.header-shrink .header-content {
    flex-direction: row;
    justify-content: center;
    padding: 0;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  /* Further adjustments for smaller screens */
  :root {
    --header-height: 200px; /* Even more space for very small screens */
  }
}