/*
 * header.css — Topbar amarillo + Header sticky oscuro + Mobile menu
 * ════════════════════════════════════════════════════════════════
 */

/* ── Topbar ────────────────────────────────────────────────────────────────── */
.topbar {
  background:     var(--yellow);
  padding:        8px 0;
  font-family:    var(--font-head);
  font-size:      12px;
  font-weight:    600;
  letter-spacing: 0.08em;
  color:          var(--black);
  position:       relative;
  z-index:        calc(var(--z-header) + 1);
}

.topbar .container {
  display:     flex;
  justify-content: space-between;
  align-items: center;
  gap:         12px;
  flex-wrap:   wrap;
}

.topbar a {
  color:      var(--black);
  transition: opacity var(--transition-fast);
}

.topbar a:hover {
  opacity: 0.6;
}

.topbar-links {
  display: flex;
  gap:     24px;
}

/* ── Header principal ──────────────────────────────────────────────────────── */
.header {
  position:       sticky;
  top:            0;
  z-index:        var(--z-header);
  background:     rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom:  1px solid rgba(245, 196, 0, 0.12);
  transition:     box-shadow var(--transition), background var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.header .container {
  display:     flex;
  align-items: center;
  justify-content: space-between;
  padding-top:    14px;
  padding-bottom: 14px;
}

/* ── Logo ──────────────────────────────────────────────────────────────────── */
.logo {
  display:     flex;
  align-items: center;
  gap:         12px;
  text-decoration: none;
}

.logo-mark {
  width:       48px;
  height:      48px;
  background:  var(--yellow);
  display:     flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size:   20px;
  color:       var(--black);
  letter-spacing: -1px;
  flex-shrink: 0;
}

.logo-name {
  font-family: var(--font-display);
  font-size:   22px;
  letter-spacing: 0.04em;
  color:       var(--white);
  line-height: 1.1;
}

.logo-name span {
  color: var(--yellow);
}

.logo-sub {
  font-family:    var(--font-head);
  font-size:      10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color:          var(--gray-500);
}

/* ── Navegación ────────────────────────────────────────────────────────────── */
.nav {
  display:     flex;
  align-items: center;
  gap:         28px;
}

.nav a {
  font-family:    var(--font-head);
  font-size:      14px;
  font-weight:    600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color:          rgba(255, 255, 255, 0.7);
  transition:     color var(--transition-fast);
  position:       relative;
}

.nav a::after {
  content:    '';
  position:   absolute;
  bottom:     -3px;
  left:       0;
  right:      100%;
  height:     2px;
  background: var(--yellow);
  transition: right 0.3s ease;
}

.nav a:hover {
  color: var(--white);
}

.nav a:hover::after {
  right: 0;
}

.nav a.active {
  color: var(--yellow);
}

.nav a.active::after {
  right: 0;
}

.nav-cta {
  margin-left: 8px;
  padding:     10px 22px;
  font-size:   13px;
}

/* ── Hamburger (mobile) ────────────────────────────────────────────────────── */
.hamburger {
  display:    none;
  flex-direction: column;
  gap:        5px;
  cursor:     pointer;
  background: none;
  border:     none;
  padding:    4px;
}

.hamburger span {
  display:    block;
  width:      24px;
  height:     2px;
  background: var(--white);
  transition: var(--transition);
  transform-origin: center;
}

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

/* ── Mobile menu overlay ───────────────────────────────────────────────────── */
.mobile-menu {
  position:   fixed;
  inset:      0;
  z-index:    calc(var(--z-header) + 50);
  background: rgba(10, 10, 10, 0.98);
  display:    flex;
  flex-direction: column;
  align-items:    center;
  justify-content: center;
  gap:        32px;
  opacity:    0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu.open {
  opacity:    1;
  visibility: visible;
}

.mobile-menu a {
  font-family:    var(--font-display);
  font-size:      clamp(36px, 8vw, 56px);
  color:          var(--white);
  letter-spacing: 0.04em;
  transition:     color var(--transition-fast);
}

.mobile-menu a:hover {
  color: var(--yellow);
}

.mobile-close {
  position:  absolute;
  top:       24px;
  right:     24px;
  font-size: 28px;
  color:     rgba(255, 255, 255, 0.7);
  background: none;
  border:    none;
  cursor:    pointer;
  transition: color var(--transition-fast);
  line-height: 1;
}

.mobile-close:hover {
  color: var(--yellow);
}

/* Bloquear scroll del body cuando el menu está abierto */
body.menu-open {
  overflow: hidden;
}