:root {
  --header-h-big: 160px;
  --header-h-small: 90px;
  --logo-big: 160px; 
  --logo-small: 60px;
  
  --header-w-start: 98%; 
  --header-max-start: 1920px;

  --header-w-collapsed: 98%;
  --header-max-collapsed: 1640px;
  
  --glass-bg: rgba(255, 255, 255, 0.05);
  --border-glass: rgba(255, 255, 255, 0.1);
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.1);
  --c-dark: #0c0c0c;
  --c-accent: #ff3333;
  --ease: cubic-bezier(.77, 0, .175, 1);
}

.site-header {
  position: fixed;
  top: 0; left: 50%; transform: translateX(-50%);
  width: var(--header-w-start); max-width: var(--header-max-start);
  height: var(--header-h-big);
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 0; 
  background: transparent; z-index: 1000;
  transition: all 0.8s var(--ease);
  border: 0px solid transparent; 
}

/* PILL STATE */
.site-header.collapsed {
  height: var(--header-h-small);
  top: 15px; 
  width: var(--header-w-collapsed);
  max-width: var(--header-max-collapsed);
  padding: 0 40px; 
  background: var(--glass-bg);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-glass);
  border-radius: 100px; 
}

.logo {
    height: calc(var(--logo-big) * 1.5);  /* Keep 240px */
    width: calc(var(--logo-big) * 1.5);
    display: flex;
    align-items: center;  /* Center SVG vertically */
    justify-content: flex-start;  /* Align left */
    margin-top: 0;  /* Remove negative margin */
    overflow: visible;  /* Allow Lottie to breathe */
    transition: all 0.8s var(--ease);
}

.logo svg {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.site-header.collapsed .logo {
    height: calc(var(--logo-small) * 1.5);  /* Keep 90px */
    width: calc(var(--logo-small) * 1.5);
}

.main-nav { margin-top: 40px; transition: margin 0.8s var(--ease); }
.site-header.collapsed .main-nav { margin-top: 35px; }
.main-nav ul { display: flex; gap: 50px; list-style: none; margin: 0; padding: 0; }
.main-nav a {
  position: relative; font-family: 'Inter', sans-serif; font-size: 20px;
  font-weight: 600; text-transform: uppercase; text-decoration: none;
  color: var(--c-dark); transition: color .3s ease; display: inline-block; line-height: 1; 
}
.main-nav a::after {
  content: ''; position: absolute; left: 0; bottom: -4px; height: 6px; 
  background: var(--c-accent); border-radius: 1px; width: 0%; transition: width .3s ease;
}
.main-nav a:hover::after { width: 100%; }

@media(max-width: 768px){
  .site-header { padding: 15px 15px 0 15px; height: 100px; }
  .site-header.collapsed { padding: 0 20px; height: 70px; top: 15px; }
  .site-header.collapsed .main-nav { margin-top: 25px; }
  .main-nav ul { gap: 20px; }
  .main-nav a { font-size: 16px; }
}
body.overlay-open .site-header {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}