/* ==========================================================================
   DVB - Header
   ========================================================================== */

.dvb-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    padding: 22px 0;
    background: transparent;
    transition: background .35s ease, padding .35s ease, box-shadow .35s ease, transform .3s ease;
}

.dvb-header.is-scrolled {
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(8px);
    padding: 14px 0;
    box-shadow: 0 4px 24px rgba(15, 23, 42, .08);
}

/* Header oculto al bajar, visible al subir (opcional, activado por JS) */
.dvb-header.is-hidden {
    transform: translateY(-100%);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: nowrap;
}

.dvb-header .logo {
    flex-shrink: 0;
    display: grid;
    transition: opacity .25s ease, transform .25s ease;
}

/* Blanco y negro apilados en la misma celda (CSS grid stacking):
   el tamaño no depende de la resolución del archivo subido y el
   cambio entre versiones es un simple crossfade de opacidad. */
.dvb-header .logo-img {
    grid-area: 1 / 1;
    display: block;
    width: auto;
    height: 46px;
    max-width: 190px;
    object-fit: contain;
    transition: opacity .3s ease;
}

/* Por defecto (header transparente/oscuro): logo blanco visible */
.dvb-header .logo-img--black {
    opacity: 0;
}

/* Al hacer scroll (header se vuelve blanco): logo negro visible */
.dvb-header.is-scrolled .logo-img--white {
    opacity: 0;
}

.dvb-header.is-scrolled .logo-img--black {
    opacity: 1;
}

.dvb-header .logo:hover {
    opacity: .82;
    transform: translateY(-1px);
}

.dvb-header .logo-text {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--dvb-white);
    transition: color .3s ease;
}

.dvb-header.is-scrolled .logo-text {
    color: var(--dvb-navy);
}

/* --- Navegación desktop --- */
.main-navigation {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.main-navigation .menu {
    display: flex;
    align-items: center;
    gap: 34px;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: nowrap;
}

.main-navigation .menu li {
    position: relative;
}

.main-navigation .menu a {
    position: relative;
    display: inline-block;
    padding-bottom: 4px;
    color: var(--dvb-white);
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
    transition: color .2s ease;
}

.main-navigation .menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--dvb-gold);
    border-radius: 2px;
    transition: width .3s cubic-bezier(.22,.61,.36,1);
}

.main-navigation .menu a:hover::after {
    width: 100%;
}

.dvb-header.is-scrolled .main-navigation .menu a {
    color: var(--dvb-text-dark);
}

.main-navigation .menu a:hover {
    color: var(--dvb-gold);
}

/* --- Íconos sociales dentro del menú principal ---
   Ocultos en desktop (viven junto al botón CTA, ver .header-socials);
   se muestran solo en el panel móvil off-canvas (ver responsive.css) */
.nav-socials {
    display: none;
    align-items: center;
    gap: 12px;
}

.nav-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    flex-shrink: 0;
    border-radius: 50%;
    color: var(--dvb-white);
    background: rgba(255, 255, 255, .12);
    transition: background .25s ease, color .25s ease, transform .25s ease;
}

.nav-social-link svg { width: 16px; height: 16px; }

.nav-social-link:hover {
    background: var(--dvb-gold);
    color: var(--dvb-navy);
    transform: translateY(-2px);
}

/* --- Íconos sociales junto al botón CTA (desktop) --- */
.header-socials {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-left: 18px;
    margin-left: 4px;
    border-left: 1px solid rgba(255, 255, 255, .3);
}

.header-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    flex-shrink: 0;
    border-radius: 50%;
    color: var(--dvb-white);
    background: rgba(255, 255, 255, .12);
    transition: background .25s ease, color .25s ease, transform .25s ease;
}

.header-social-link svg { width: 16px; height: 16px; }

.header-social-link:hover {
    background: var(--dvb-gold);
    color: var(--dvb-navy);
    transform: translateY(-2px);
}

.dvb-header.is-scrolled .header-socials {
    border-left-color: rgba(15, 23, 42, .12);
}

.dvb-header.is-scrolled .header-social-link {
    color: var(--dvb-text-dark);
    background: rgba(15, 23, 42, .06);
}

.dvb-header.is-scrolled .header-social-link:hover {
    background: var(--dvb-gold);
    color: var(--dvb-white);
}

/* Submenús (si existen) */
.main-navigation .sub-menu {
    list-style: none;
    margin: 0;
    padding: 10px 0;
}

/* --- Acciones a la derecha --- */
.header-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-shrink: 0;
}

#dvb-header-cta { white-space: nowrap; }

/* --- Botón hamburguesa (oculto en desktop) --- */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 34px;
    height: 34px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-toggle span {
    width: 26px;
    height: 2px;
    background: var(--dvb-white);
    border-radius: 2px;
    transition: background .3s ease, transform .35s ease, opacity .25s ease;
    transform-origin: center;
}

.dvb-header.is-scrolled .menu-toggle span {
    background: var(--dvb-navy);
}

/* Animación hamburguesa -> X */
.menu-toggle.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.is-active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.is-active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
.menu-toggle.is-active span {
    background: var(--dvb-white) !important;
}

/* Overlay para el menú móvil */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, .55);
    opacity: 0;
    visibility: hidden;
    transition: opacity .35s ease, visibility .35s ease;
    z-index: 998;
}

.nav-overlay.is-active {
    opacity: 1;
    visibility: visible;
}