/* ===== SITE HEADER & NAV ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-iron);
  color: #fff;
  transition: box-shadow 0.3s;
}
.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.header-top {
  background: var(--color-primary);
  padding: var(--space-2) 0;
  font-size: var(--text-xs);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.08em;
}
.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.header-top a { color: #fff; transition: opacity 0.2s; }
.header-top a:hover { opacity: 0.8; }
.header-top-items {
  display: flex;
  gap: var(--space-6);
  align-items: center;
  flex-wrap: wrap;
}
.header-top-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header-main {
  padding-block: var(--space-4);
}
.header-main .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* SVG Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: #fff;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-text {
  display: flex;
  flex-direction: column;
}
.logo-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1;
  color: #fff;
}
.logo-tagline {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-top: 2px;
}

/* Desktop Nav */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.desktop-nav .nav-link { color: rgba(255,255,255,0.85); }
.desktop-nav .nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
.desktop-nav .nav-link.active { color: var(--color-primary); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-mobile-toggle {
  display: none;
  color: #fff;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition-interactive);
}
.nav-mobile-toggle:hover { background: rgba(255,255,255,0.1); }

/* Mobile Nav Drawer */
[data-nav-menu] {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-iron);
  border-top: 2px solid var(--color-primary);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
}
[data-nav-menu].open { display: block; }
[data-nav-menu] .nav-link {
  display: block;
  color: rgba(255,255,255,0.85);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
}
[data-nav-menu] .nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }
[data-nav-menu] .btn { width: 100%; text-align: center; margin-top: var(--space-4); }

@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .header-actions .btn { display: none; }
  .header-actions .theme-toggle { display: flex; }
  .nav-mobile-toggle { display: flex; }
  .site-header { position: relative; }
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.7);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover { color: #fff; background: rgba(255,255,255,0.1); }

/* ===== SITE FOOTER ===== */
.site-footer {
  background: #0d0f11;
  color: rgba(255,255,255,0.7);
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
}
.footer-brand .logo-name { font-size: var(--text-xl); }
.footer-desc { color: rgba(255,255,255,0.55); margin-top: var(--space-4); max-width: 32ch; font-size: var(--text-sm); line-height: 1.7; }
.footer-lic { margin-top: var(--space-4); font-size: var(--text-xs); color: rgba(255,255,255,0.4); font-family: var(--font-display); letter-spacing: 0.1em; text-transform: uppercase; }

.footer-col-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: var(--space-5);
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.footer-links a { color: rgba(255,255,255,0.6); font-size: var(--text-sm); transition: color 0.2s; }
.footer-links a:hover { color: var(--color-primary); }
.footer-contact-item { display: flex; gap: var(--space-3); font-size: var(--text-sm); margin-bottom: var(--space-3); color: rgba(255,255,255,0.65); }
.footer-contact-item a { color: rgba(255,255,255,0.65); transition: color 0.2s; }
.footer-contact-item a:hover { color: var(--color-primary); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.3);
}
.footer-bottom a { color: var(--color-primary); }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
}