/* Header y Navegación */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: background-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

/* Transparent header — landing/hero pages */
.header--hero {
    background-color: transparent;
    box-shadow: none;
}

.header--hero .nav-link {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

.header--hero .nav-link::after {
    background-color: rgba(255, 255, 255, 0.8);
}

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

.header--hero .nav-toggle-bar {
    background-color: var(--color-white);
}

.header--hero .logo-image {
    filter: brightness(0) invert(1);
}

/* Blurred state — frosted glass while scrolling within the hero */
.header--hero.header--blurred {
    background-color: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

/* Scrolled state — solid white once hero is completely out of view */
.header--hero.header--scrolled {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

/* Shared text/icon colors for both blurred and scrolled states */
.header--hero.header--blurred .nav-link,
.header--hero.header--scrolled .nav-link {
    color: var(--color-gray-700);
    text-shadow: none;
}

.header--hero.header--blurred .nav-link::after,
.header--hero.header--scrolled .nav-link::after {
    background-color: var(--color-corporate);
}

.header--hero.header--blurred .nav-link:hover,
.header--hero.header--blurred .nav-link.active,
.header--hero.header--scrolled .nav-link:hover,
.header--hero.header--scrolled .nav-link.active {
    color: var(--color-corporate);
}

.header--hero.header--blurred .nav-toggle-bar,
.header--hero.header--scrolled .nav-toggle-bar {
    background-color: var(--color-gray-700);
}

.header--hero.header--blurred .logo-image,
.header--hero.header--scrolled .logo-image {
    filter: none;
}

.header.scroll-down {
    transform: translateY(-100%);
}

.header.scroll-up {
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--container-padding);
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.header-logo img {
    height: 50px;
    width: auto;
}

.nav {
    display: none;
}

@media (min-width: 768px) {
    .nav {
        display: block;
    }
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-gray-700);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-corporate);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-corporate);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: var(--color-corporate);
}

/* Botón primario en navegación */
.nav-list .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #0077B6 0%, #005a8d 100%);
    color: var(--color-white);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 4px 12px rgba(0, 119, 182, 0.3);
    border: none;
    white-space: nowrap;
}

.nav-list .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 119, 182, 0.4);
}

.nav-list .btn-primary .material-symbols-outlined {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all var(--transition-base);
    min-width: 1.25rem;
    width: 1.25rem;
    height: 1.25rem;
}

.nav-list .btn-primary .btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all var(--transition-base);
    min-width: 1.25rem;
    width: 1.25rem;
    height: 1.25rem;
}

.nav-list .btn-primary:hover .btn-icon {
    transform: translateX(3px);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle-bar {
    width: 25px;
    height: 3px;
    background-color: var(--color-gray-700);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.nav-toggle.active .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.nav-toggle.active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.nav-mobile {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    padding: var(--spacing-lg);
}

.nav-mobile.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.nav-mobile .nav-list {
    flex-direction: column;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .nav {
        display: block;
    }
    
    .nav-toggle {
        display: none;
    }
    
    .nav-mobile {
        display: none;
    }
}

.main-content {
    margin-top: 70px;
}

.main-content--hero {
    margin-top: 0;
}

/* ??? Nav Dropdown (desktop) ?????????????????????????????? */

.nav-dropdown {
    position: relative;
}

.nav-dropdown__trigger {
    cursor: pointer;
    font-family: inherit;
}

.nav-dropdown__trigger:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.7);
    outline-offset: 3px;
}

.nav-dropdown__icon {
    transition: transform var(--transition-base);
}

.nav-dropdown.is-open .nav-dropdown__icon {
    transform: rotate(180deg);
}

.nav-dropdown__panel {
    position: absolute;
    top: calc(100% + 0.75rem);
    right: 0;
    min-width: 290px;
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--color-gray-200);
    padding: var(--spacing-xs);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
    z-index: 100;
}

.nav-dropdown.is-open .nav-dropdown__panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    color: var(--color-gray-700);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
}

.nav-dropdown__item:hover {
    background-color: rgba(var(--color-primary-rgb), 0.06);
    color: var(--color-primary);
}

.nav-dropdown__item-icon {
    font-size: 1.25rem;
    color: var(--color-accent-primary);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.25rem;
}

.nav-dropdown__item:hover .nav-dropdown__item-icon {
    color: var(--color-primary);
}

.nav-dropdown__divider {
    height: 1px;
    background-color: var(--color-gray-200);
    margin: var(--spacing-xs) var(--spacing-sm);
}

.nav-dropdown__all {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    transition: background-color var(--transition-fast);
}

.nav-dropdown__all:hover {
    background-color: rgba(var(--color-primary-rgb), 0.06);
}

.nav-dropdown__all .material-symbols-outlined {
    font-size: 1rem;
}

/* ??? Nav Mobile Dropdown (accordion) ????????????????????? */

.nav-mobile-dropdown__trigger {
    cursor: pointer;
    font-family: inherit;
    width: 100%;
    justify-content: space-between;
}

.nav-mobile-dropdown__list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-xs) 0 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height var(--transition-base), opacity var(--transition-base);
}

.nav-mobile-dropdown.is-open .nav-mobile-dropdown__list {
    max-height: 500px;
    opacity: 1;
}

.nav-mobile-dropdown__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--color-gray-600);
    text-decoration: none;
    font-size: var(--font-size-sm);
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-mobile-dropdown__item:hover {
    color: var(--color-primary);
    background-color: rgba(var(--color-primary-rgb), 0.05);
}

.nav-mobile-dropdown__item .material-symbols-outlined {
    font-size: 1.125rem;
    color: var(--color-accent-primary);
    flex-shrink: 0;
    min-width: 1.125rem;
}

.nav-mobile-dropdown__item--all {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    justify-content: space-between;
    margin-top: var(--spacing-xs);
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-sm);
}

.nav-mobile-dropdown__item--all .material-symbols-outlined {
    color: var(--color-primary);
    font-size: 1rem;
}

/* ??? Mobile menu: force dark text regardless of header state ? */

/* nav-mobile always has a white background, so links must always
   use dark colours even when the header--hero transparent state
   would otherwise make them white and invisible. */
.header--hero .nav-mobile .nav-link {
    color: var(--color-gray-700);
    text-shadow: none;
}

.header--hero .nav-mobile .nav-link:hover,
.header--hero .nav-mobile .nav-link.active {
    color: var(--color-corporate);
}

/* Center the Servicios dropdown trigger so it matches the rest
   of the mobile menu items (Inicio, Sobre Nosotros, Contacto) */
.nav-mobile .nav-mobile-dropdown__trigger {
    justify-content: center;
}