/* ============================================================
   HEADER — STUDIO VF
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  transition: background var(--duration-slow) var(--ease),
              border-color var(--duration) var(--ease),
              padding var(--duration) var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(10,10,10,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: rgba(201,168,76,0.12);
}

.header-inner {
  display: flex;
  flex-direction: column;
}

/* ── TOPBAR ── */
.header-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: all var(--duration-slow) var(--ease);
}

.site-header.scrolled .header-topbar {
  display: none;
}

.topbar-social {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar-social a {
  color: var(--c-gray-500);
  display: flex;
  align-items: center;
  transition: color var(--duration) var(--ease);
}
.topbar-social a:hover { color: var(--c-gold); }

.topbar-phone {
  font-size: var(--text-xs);
  color: var(--c-gray-500);
  letter-spacing: 0.06em;
  transition: color var(--duration) var(--ease);
}
.topbar-phone:hover { color: var(--c-gold); }

/* ── NAV PRINCIPAL ── */
.header-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  gap: var(--space-8);
}

/* ── LOGO ── */
.site-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.site-logo img {
  height: 48px;
  width: auto;
  transition: filter var(--duration) var(--ease);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo-vf {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 300;
  color: var(--c-gold);
  letter-spacing: -0.02em;
  line-height: 1;
}
.logo-studio {
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-gray-500);
}

/* ── MENÚ DESKTOP ── */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--c-gray-600);
  transition: color var(--duration) var(--ease);
  border-radius: var(--radius-sm);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-3);
  right: var(--space-3);
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--duration) var(--ease);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* ── DROPDOWN ── */
.nav-item--dropdown {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 220px;
  background: var(--c-black-soft);
  border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all var(--duration) var(--ease);
  box-shadow: 0 16px 40px rgba(0,0,0,0.6);
}

.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid var(--c-gray-200);
}

.nav-item--dropdown:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown li a {
  display: block;
  padding: 10px 20px;
  font-size: var(--text-sm);
  color: var(--c-gray-500);
  transition: all var(--duration) var(--ease);
  border-left: 2px solid transparent;
}

.nav-dropdown li a:hover {
  color: var(--c-gold);
  border-left-color: var(--c-gold);
  background: rgba(201,168,76,0.05);
  padding-left: 24px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

/* ── HAMBURGUESA ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--c-white);
  border-radius: 2px;
  transition: all var(--duration) var(--ease);
}
.nav-toggle span:nth-child(1) { width: 24px; }
.nav-toggle span:nth-child(2) { width: 18px; }
.nav-toggle span:nth-child(3) { width: 24px; }

.nav-toggle[aria-expanded="true"] span:nth-child(1) { width: 24px; transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; width: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { width: 24px; transform: translateY(-6.5px) rotate(-45deg); }

/* ── MENÚ MOBILE ── */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 800;
  pointer-events: none;
}

.mobile-menu.is-open {
  pointer-events: auto;
}

.mobile-menu__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.7);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease);
  backdrop-filter: blur(4px);
}

.mobile-menu.is-open .mobile-menu__overlay {
  opacity: 1;
}

.mobile-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100%;
  background: var(--c-black-soft);
  border-left: 1px solid var(--c-gray-200);
  padding: 80px var(--space-6) var(--space-8);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
}

.mobile-menu.is-open .mobile-menu__panel {
  transform: translateX(0);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-4) 0;
  font-size: var(--text-lg);
  font-family: var(--font-display);
  font-weight: 300;
  color: var(--c-gray-600);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: none;
  text-align: left;
  transition: color var(--duration) var(--ease);
}

.mobile-nav-link:hover { color: var(--c-gold); }

.mobile-nav-sub {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease);
}

.mobile-nav-sub.is-open {
  max-height: 400px;
}

.mobile-nav-sub li a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--c-gray-500);
  border-left: 1px solid var(--c-gray-200);
  margin-left: var(--space-2);
  transition: all var(--duration) var(--ease);
}

.mobile-nav-sub li a:hover {
  color: var(--c-gold);
  border-left-color: var(--c-gold);
}

/* ── RESPONSIVE HEADER ── */
@media (max-width: 1024px) {
  .nav-menu { gap: 0; }
  .nav-link { padding: var(--space-2) var(--space-2); font-size: var(--text-xs); }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .mobile-menu { display: block; }
  .header-topbar { display: none; }

  .header-nav {
    padding-block: var(--space-4);
  }

  .site-header {
    background: rgba(10,10,10,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(201,168,76,0.1);
  }
}