/* ============================================================
   layout.css — Nav, Footer, Grid System, Contenedor .ct
   J&D ELECTRO COOLING
   ============================================================ */

/* ── CONTENEDOR PRINCIPAL ───────────────────────────────────── */
.ct {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: 56px;
    padding-right: 56px;
}

/* ── SECCIÓN BASE ───────────────────────────────────────────── */
section {
    position: relative;
}

/* ── GRID SYSTEM ────────────────────────────────────────────── */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* ── NAVEGACIÓN ─────────────────────────────────────────────── */
#nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: var(--z-nav);
    display: flex;
    align-items: center;
    transition: background var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
}

#nav.nav--scrolled {
    background: rgba(250, 250, 250, 0.88);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 1px 0 var(--border-light);
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 56px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}

.nav__logo-img {
    height: 96px;
    width: auto;
    transition: height var(--transition-base);
}

/* Al hacer scroll el nav se compacta un poco; el logo sigue prominente */
#nav.nav--scrolled .nav__logo-img {
    height: 80px;
}

.nav__logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-primary);
    line-height: 1;
    white-space: nowrap;
}

.nav__logo-text span {
    color: var(--color-gold-text);
}

.nav__links {
    display: flex;
    align-items: center;
    gap: clamp(18px, 2.5vw, 36px);
}

.nav__link {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.10em;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    position: relative;
    transition: color var(--transition-fast);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-red);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-gold-text);
}

.nav__link:hover::after {
    width: 100%;
}

/* Home: nav transparente sobre hero oscuro → links claros y legibles.
   Al hacer scroll (.nav--scrolled, fondo claro) vuelven a navy. */
body.home #nav:not(.nav--scrolled) .nav__link {
    color: rgba(255, 255, 255, 0.88);
}

body.home #nav:not(.nav--scrolled) .nav__link:hover {
    color: var(--color-gold);
}

body.home #nav:not(.nav--scrolled) .nav__hamburger span {
    background: #ffffff;
}

.nav__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 26px;
    background: var(--color-gold);
    color: var(--color-navy);
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border-radius: var(--border-radius);
    flex-shrink: 0;
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav__cta:hover {
    background: var(--color-gold-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(198, 152, 43, 0.32);
}

/* ── MEGA MENÚ (dropdowns desktop) ──────────────────────────── */
.nav__item {
    position: relative;
    display: flex;
    align-items: center;
}

.nav__link--toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav__link--toggle svg {
    width: 13px;
    height: 13px;
    transition: transform var(--transition-fast);
}

.nav__item--has-menu:hover .nav__link--toggle svg,
.nav__item--has-menu:focus-within .nav__link--toggle svg {
    transform: rotate(180deg);
}

.nav__mega {
    position: absolute;
    top: calc(100% + 18px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 320px;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-top: 2px solid var(--color-gold);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: calc(var(--z-nav) + 5);
}

/* Puente invisible para que el hover no se corte al bajar el cursor */
.nav__mega::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 0;
    right: 0;
    height: 20px;
}

.nav__item--has-menu:hover .nav__mega,
.nav__item--has-menu:focus-within .nav__mega,
.nav__mega.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.nav__mega-link {
    display: block;
    padding: 11px 16px;
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    border-left: 2px solid transparent;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.nav__mega-link:hover {
    background: var(--color-gold-bg);
    color: var(--color-navy);
    border-left-color: var(--color-gold);
}

.nav__mega-link--head {
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-gold-text);
    padding: 6px 16px 8px;
    pointer-events: none;
}

/* HAMBURGER */
.nav__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    cursor: pointer;
    z-index: 200;
    /* Must be above .nav__mobile overlay */
}

.nav__hamburger span {
    display: block;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base), background var(--transition-base);
    transform-origin: center;
}

/* Make hamburger lines white when menu is open so the X is visible */
.nav__hamburger.is-active span {
    background: #ffffff;
}

.nav__hamburger span:nth-child(1) {
    width: 28px;
}

.nav__hamburger span:nth-child(2) {
    width: 20px;
}

.nav__hamburger span:nth-child(3) {
    width: 28px;
}

.nav__hamburger.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
    width: 28px;
}

.nav__hamburger.is-active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.nav__hamburger.is-active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
    width: 28px;
}

/* MOBILE MENU — stays display:none until JS adds .is-open */
.nav__mobile {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    /* dynamic viewport height for mobile browsers */
    background: #050919;
    z-index: calc(var(--z-nav) + 1);
    /* ABOVE the nav bar */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: clamp(20px, 3.5vh, 36px);
    overflow: hidden;
}

.nav__mobile.is-open {
    display: flex;
}

.nav__mobile-link {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.80);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav__mobile-link:hover {
    color: var(--color-gold);
}

/* ── ACORDEÓN MÓVIL (mega menú) ────────────────────────────── */
.nav__mobile {
    justify-content: flex-start;
    padding: calc(var(--nav-height) + 28px) 32px 40px;
    overflow-y: auto;
    gap: 4px;
}

.nav__mobile-group {
    width: 100%;
    max-width: 460px;
    text-align: center;
}

.nav__mobile-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.85);
    padding: 6px 0;
    transition: color var(--transition-fast);
}

.nav__mobile-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

.nav__mobile-toggle[aria-expanded="true"] {
    color: var(--color-gold);
}

.nav__mobile-toggle[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.nav__mobile-sub {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-base);
}

.nav__mobile-sub.is-open {
    grid-template-rows: 1fr;
}

.nav__mobile-sub-inner {
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 4px 0;
}

.nav__mobile-sublink {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.62);
    padding: 8px 0;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav__mobile-sublink:hover {
    color: var(--color-gold);
}

.nav__mobile-link--cta {
    margin-top: 16px;
    padding: 14px 32px;
    background: var(--color-gold);
    color: var(--color-navy);
    border-radius: var(--border-radius);
    font-size: 1.2rem;
}

.nav__mobile-link--cta:hover {
    color: var(--color-navy);
    background: var(--color-gold-hover);
}

/* ── SECTION HEADER ─────────────────────────────────────────── */
.section-header {
    margin-bottom: 72px;
}

.section-header--center {
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 72px;
}

.section-header__label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.section-header__label::before {
    content: '';
    display: inline-block;
    width: 32px;
    height: 1.2px;
    background: var(--color-red);
}

.section-header__title {
    font-family: var(--font-heading);
    font-size: var(--text-5xl);
    font-weight: 800;
    line-height: 1.05;
    text-transform: uppercase;
    color: var(--text-primary);
    letter-spacing: 0.03em;
}

.section-header__title strong {
    color: var(--color-gold-text);
}

.section-header__desc {
    margin-top: 20px;
    font-size: var(--text-lg);
    font-weight: 300;
    color: var(--text-secondary);
    line-height: 1.70;
    max-width: 640px;
}

.section-header--center .section-header__desc {
    margin-left: auto;
    margin-right: auto;
}

/* ── FOOTER ─────────────────────────────────────────────────── */
footer {
    background: var(--bg-footer);
    color: rgba(255, 255, 255, 0.70);
    padding: 80px 0 0;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-red) 0%, var(--color-cyan) 50%, var(--color-gold) 100%);
}

.footer__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 56px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 64px;
}

.footer__brand-name {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: 12px;
}

.footer__brand-name span {
    color: var(--color-gold);
}

.footer__brand-desc {
    font-size: 0.9rem;
    font-weight: 300;
    line-height: 1.70;
    color: rgba(255, 255, 255, 0.50);
    margin-top: 12px;
    margin-bottom: 28px;
}

.footer__social {
    display: flex;
    gap: 12px;
}

.footer__social-link {
    width: 38px;
    height: 38px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.55);
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.footer__social-link:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
    background: rgba(198, 152, 43, 0.12);
}

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

.footer__col-title {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.90);
    margin-bottom: 24px;
}

.footer__nav-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__nav-link {
    font-size: 0.875rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.50);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__nav-link:hover {
    color: var(--color-gold);
}

/* Footer de páginas internas (.footer__links / .footer__link) — columna legible */
.footer__links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__link {
    font-size: 0.875rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.50);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-gold);
}

.footer__contact-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.875rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.50);
    margin-bottom: 14px;
    word-break: break-word;
    overflow-wrap: break-word;
}

.footer__contact-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-gold);
}

.footer__badges {
    margin-top: 56px;
    padding: 28px 56px;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.footer__badge {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.03);
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.footer__badge:hover {
    border-color: var(--color-red);
    background: rgba(198, 152, 43, 0.10);
}

.footer__badge strong {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: var(--text-white);
    text-transform: uppercase;
}

.footer__badge span {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
}

.footer__bottom {
    margin-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    padding: 24px 56px;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__copy {
    font-size: 0.8rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.55);
}

.footer__legal {
    display: flex;
    gap: 24px;
}

.footer__legal-link {
    font-size: 0.8rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__legal-link:hover {
    color: var(--color-gold);
}

/* ── BACK TO TOP ─────────────────────────────────────────────── */
#back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--color-red);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-above);
    opacity: 0;
    pointer-events: none;
    transform: translateY(16px);
    transition: opacity var(--transition-base), transform var(--transition-base), background var(--transition-fast);
    box-shadow: var(--shadow-md);
}

#back-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

#back-to-top:hover {
    background: var(--color-red-hover);
    transform: translateY(-3px);
}

#back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .ct {
        padding-left: 32px;
        padding-right: 32px;
    }

    .nav__inner {
        padding: 0 32px;
    }

    .nav__logo-text {
        font-size: 1.15rem;
    }

    .footer__inner {
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        padding: 0 32px;
    }

    .footer__bottom {
        padding: 24px 32px;
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 72px 24px;
        --nav-height: 64px;
    }

    .ct {
        padding-left: 24px;
        padding-right: 24px;
    }

    .nav__links,
    .nav__cta {
        display: none;
    }

    .nav__hamburger {
        display: flex;
    }

    .nav__inner {
        padding: 0 20px;
    }

    .nav__logo-img,
    #nav.nav--scrolled .nav__logo-img {
        height: 62px;
    }

    .nav__logo-text {
        font-size: 1.05rem;
        letter-spacing: 0.02em;
    }

    /* .nav__mobile stays display:none — only .is-open triggers display:flex */

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .section-header__title {
        font-size: var(--text-4xl);
    }

    .divider {
        margin: 0 24px;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 0 24px;
    }

    .footer__links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .footer__link {
        display: block;
        font-size: 0.875rem;
        word-break: break-word;
    }

    .footer__bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
        padding: 24px 24px;
    }

    #back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}