/* ============================================================
   VYH2 — HEADER COMPONENT
   ============================================================ */

/* ── TOPBAR ── */
#topbar {
  height: var(--topbar-h);
  background: var(--color-primary-dark);
  border-bottom: 1px solid rgba(43,158,212,0.12);
  display: flex;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: var(--z-header);
  transition: height var(--duration-normal) var(--ease-in-out),
              opacity var(--duration-normal) var(--ease-in-out);
  overflow: hidden;
}

#topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.topbar__info {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.topbar__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
}

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

.topbar__item svg {
  width: 13px;
  height: 13px;
  color: var(--color-accent);
  flex-shrink: 0;
}

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

.topbar__cta .btn {
  padding: 4px 14px;
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
  letter-spacing: 0.08em;
}

/* ── HEADER ── */
#header {
  height: auto;
  min-height: var(--header-h);
  position: fixed;
  top: var(--topbar-h);
  left: 0;
  right: 0;
  width: 100%;
  z-index: calc(var(--z-header) - 1);
  /* Sin backdrop-filter aquí — se aplica en ::before para no crear
     un stacking context que recorte el dropdown absoluto */
  transition: box-shadow var(--duration-normal) var(--ease-in-out),
              border-color var(--duration-normal) var(--ease-in-out);
  border-bottom: 1px solid transparent;
}

/* Fondo con blur en pseudo-elemento para no recortar el dropdown */
#header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: background var(--duration-normal) var(--ease-in-out),
              backdrop-filter var(--duration-normal) var(--ease-in-out),
              box-shadow var(--duration-normal) var(--ease-in-out);
  pointer-events: none;
  z-index: -1;
}

#header .container {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

#header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 4px 32px rgba(0,0,0,0.4);
}

#header.scrolled .container {
  height: calc(var(--header-h) - 8px);
}

#header.scrolled::before {
  background: rgba(6, 13, 26, 0.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

/* ── LOGO ── */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}

.header__logo-img {
  height: 44px;
  width: auto;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.header__logo:hover .header__logo-img {
  transform: scale(1.04);
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.header__logo-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-primary);
  line-height: 1;
}

.header__logo-name span {
  color: var(--color-accent);
}

.header__logo-tagline {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  margin-top: 3px;
}

/* ── NAV ── */
.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__item {
  position: relative;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.nav__link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--duration-fast) var(--ease-in-out);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text-primary);
  background: var(--color-glass-light);
}

.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

/* Dropdown */
.nav__dropdown {
  position: absolute;
  /* top: 100% sin gap — el padding-top crea el espacio visual
     pero mantiene el área de hover continua sin hueco */
  top: 100%;
  left: 0;
  min-width: 220px;
  background: rgba(4, 9, 18, 1.0);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  /* padding-top genera el espacio visual sin romper hover */
  padding: var(--space-2);
  padding-top: calc(var(--space-2) + 6px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity var(--duration-normal) var(--ease-out-expo),
              transform var(--duration-normal) var(--ease-out-expo);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-above);
}

/* Abierto via JS (.is-open) O hover CSS como fallback */
.nav__item.is-open .nav__dropdown,
.nav__item:focus-within .nav__dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav__item.is-open .nav__link svg {
  transform: rotate(180deg);
}

.nav__dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.nav__dropdown-item:hover {
  background: var(--color-glass-light);
  color: var(--color-text-primary);
}

.nav__dropdown-item-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(245,166,35,0.1);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  flex-shrink: 0;
}

.nav__dropdown-item-icon svg { width: 16px; height: 16px; }

/* ── HEADER ACTIONS ── */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* ── HAMBURGER ── */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition-fast);
}

.header__hamburger:hover {
  border-color: var(--color-accent);
  background: rgba(245,166,35,0.06);
}

.header__hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: var(--transition-normal);
}

.header__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.header__hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.header__hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── MOBILE NAV ── */
.header__mobile-nav {
  display: flex;                       /* always flex — animation via transform */
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(6,13,26,0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-2);
  overflow-y: auto;
  z-index: calc(var(--z-header) - 2);
  transform: translateX(100%);
  visibility: hidden;
  pointer-events: none;
  transition: transform var(--duration-slow) var(--ease-out-expo),
              visibility 0s var(--duration-slow);
  border-top: 1px solid var(--color-border);
}

.header__mobile-nav.open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
  transition: transform var(--duration-slow) var(--ease-out-expo),
              visibility 0s 0s;
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: var(--transition-fast);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.mobile-nav__link:hover,
.mobile-nav__link.active {
  color: var(--color-accent);
  background: rgba(245,166,35,0.06);
  border-color: var(--color-border-accent);
}

.mobile-nav__cta {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .header__nav { display: none; }
  .header__hamburger { display: flex; }
  .topbar__info .topbar__item:last-child { display: none; }
}

@media (max-width: 640px) {
  #topbar { height: auto; min-height: var(--topbar-h); padding: 6px 0; }
  .topbar__info { gap: var(--space-3); }
  .topbar__cta .btn:first-child { display: none; }
}