/* =============================================================================
   header.css · cabecera fija y navegación
   ============================================================================= */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 90;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background-color 0.35s ease, border-color 0.35s ease,
                backdrop-filter 0.35s ease, padding 0.35s ease;
}

/* Al hacer scroll la cabecera se asienta sobre la tinta. */
.site-header.is-stuck {
    background: rgba(15, 10, 26, 0.92);
    backdrop-filter: blur(14px);
    border-bottom-color: var(--line);
}

.header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 86px;
    transition: min-height 0.35s ease;
}

.site-header.is-stuck .header-bar {
    min-height: 68px;
}

/* ---------------------------------------------------------------- Marca */

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.brand-seal {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 50%;
    transition: transform 0.4s ease;
}

.brand:hover .brand-seal {
    transform: rotate(18deg);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.18;
}

.brand-name {
    font-family: var(--font-display);
    font-size: 1.02rem;
    color: var(--fg);
    letter-spacing: 0.01em;
    white-space: nowrap;
}

.brand-role {
    color: var(--gold);
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    white-space: nowrap;
}

/* ---------------------------------------------------------------- Navegación */

.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.site-nav a {
    position: relative;
    padding: 10px 14px;
    color: var(--fg-2);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    white-space: nowrap;
    transition: color 0.25s ease;
}

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

.site-nav a[aria-current="page"] {
    color: var(--gold);
}

/* Subrayado dorado que crece desde el centro. */
.site-nav a::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 2px;
    height: 1px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.3s ease;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
    transform: scaleX(1);
}

/* ---------------------------------------------------------------- Acceso clientes */

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.55em;
    flex-shrink: 0;
    padding: 12px 20px;
    border: 1px solid var(--gold);
    border-radius: 2px;
    color: var(--gold);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.header-cta:hover {
    background: var(--gold);
    color: var(--ink);
}

.header-cta svg {
    width: 13px;
    height: 13px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.header-actions .header-cta {
    padding: 11px 13px;
    font-size: 0.68rem;
    letter-spacing: 0.12em;
}

.header-cta-secondary {
    border-color: var(--line-strong);
    color: var(--fg-2);
}

.header-cta-secondary:hover {
    border-color: var(--gold);
    background: transparent;
    color: var(--gold);
}

/* ---------------------------------------------------------------- Menú móvil */

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--line-strong);
    border-radius: 2px;
    background: none;
    color: var(--fg);
    cursor: pointer;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
    display: block;
    width: 20px;
    height: 1.5px;
    background: currentColor;
    transition: transform 0.28s ease, opacity 0.2s ease;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
    content: "";
    position: relative;
}

.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 4.5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
    transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
    transform: translateY(-4.5px) rotate(-45deg);
}

/* Panel desplegable a pantalla completa en móvil. */
.nav-panel {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 100px 32px 48px;
    background: var(--ink);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s;
}

.nav-panel.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.nav-panel a {
    display: block;
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
    color: var(--fg);
    font-family: var(--font-display);
    font-size: 1.7rem;
}

.nav-panel a[aria-current="page"] {
    color: var(--gold);
}

.nav-panel .header-cta {
    margin-top: 34px;
    align-self: flex-start;
}

.nav-panel-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-top: 34px;
}

.nav-panel-actions .header-cta {
    margin-top: 0;
}

/* Con dos accesos externos, el header pasa antes al menú compacto. */
@media (max-width: 1199.98px) {
    .site-nav,
    .header-actions {
        display: none;
    }

    .nav-toggle {
        display: inline-flex;
    }
}