/* Branding & Header Styles - Aurelio Tech */

/* Header & Glassmorphic Navigation */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-main);
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
}

/* Logo and Operating Entity Details */
.branding {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.branding-logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.branding-logo {
  height: 2.25rem;
  width: 2.25rem;
  border-radius: 0.5rem;
  background-color: oklch(68% 0.22 195 / 0.1);
  border: 1px solid var(--border-main);
  padding: 0.15rem;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), filter 0.3s ease;
  filter: saturate(0.8) brightness(0.9) drop-shadow(0 0 2px var(--border-main));
}

html.dark-mode .branding-logo {
  filter: saturate(1.2) brightness(1.1) drop-shadow(0 0 6px oklch(68% 0.22 195 / 0.3));
}

.branding-logo:hover {
  transform: rotate(8deg) scale(1.08);
  filter: saturate(1.4) brightness(1.1) drop-shadow(0 0 10px oklch(68% 0.22 195 / 0.6));
}

.branding-text {
  display: flex;
  flex-direction: column;
}

.branding-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
  text-decoration: none;
}

.branding-meta {
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

/* Nav Menu & Action Items */
.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent-cyan);
}

/* Theme Switcher Toggle Button */
.theme-switch-btn {
  background: none;
  border: 1px solid var(--border-main);
  color: var(--text-main);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, border-color 0.2s;
}

.theme-switch-btn:hover {
  background-color: var(--border-main);
  border-color: var(--text-muted);
}

.theme-switch-btn svg {
  width: 1.1rem;
  height: 1.1rem;
  fill: currentColor;
}