/* --- HEADER --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  transition: background var(--duration-fast), border var(--duration-fast);
}

.header.scrolled {
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border);
}

.light .header.scrolled {
  background: rgba(240, 240, 240, 0.9);
}

.header-inner {
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  transition: color var(--duration-fast);
}

.logo:hover {
  color: var(--accent);
}

/* --- NAV --- */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* On mobile only the blog and theme icons remain visible */
@media (max-width: 767px) {
  .nav-links,
  .nav-separator {
    display: none;
  }
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  transition: color var(--duration-fast), transform var(--duration-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--fg);
}

.nav-link:active {
	transform: scale(1.03);
}

.nav-separator {
  width: 1px;
  height: 1.25rem;
  background: var(--muted);
  opacity: 0.4;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-blog-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.375rem;
  color: var(--muted);
  transition: color var(--duration-fast), transform var(--duration-fast);
}

.nav-blog-btn:hover {
  color: var(--primary);
}

/* Borde */
.nav-blog-btn:hover svg rect {
    stroke-dasharray: 80;
    animation: draw-border .5s ease forwards;
}

/* Líneas */
.nav-blog-btn:hover svg path:nth-of-type(5) {
    stroke-dasharray: 8;
    animation: draw-line .3s ease .15s forwards;
}

.nav-blog-btn:hover svg path:nth-of-type(6) {
    stroke-dasharray: 8;
    animation: draw-line .3s ease .22s forwards;
}

.nav-blog-btn:hover svg path:nth-of-type(7) {
    stroke-dasharray: 8;
    animation: draw-line .3s ease .31s forwards;
}

.theme-btn {
  padding: 0.5rem;
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--duration-fast), transform var(--duration-fast);
}

.theme-btn:hover {
  color: var(--primary);
  animation: rotate var(--duration-slow);
}
.theme-btn:active {
	transform: scale(1.2);
}