/**
 * Barra pública con efecto flotante al scroll; logo + nav-links (misma disposición que site-public).
 * Requiere design-tokens.css antes. Clases nav-links / btn / lang-selector alineadas a public-chrome-header.
 */

:root {
    --nav-mega-header-offset: clamp(104px, 20vw, 200px);
    --nav-mega-float-radius: 999px;
    --nav-mega-bar-bg: rgba(255, 255, 255, 0.92);
    --nav-mega-bar-border: rgba(10, 37, 64, 0.08);
}

.nav-mega-skip {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translate(-50%, -120%);
    z-index: calc(var(--z-modal) + 2);
    padding: 0.5rem 1rem;
    background: var(--brand-dark);
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: transform 0.2s ease;
}

.nav-mega-skip:focus {
    transform: translate(-50%, 0.5rem);
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
}

.nav-mega-shell {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    padding: 0;
    pointer-events: none;
    transition: padding 0.38s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-mega-shell.is-floating {
    padding: 0.5rem 1rem 0;
}

@media (min-width: 960px) {
    .nav-mega-shell.is-floating {
        padding: 0.65rem clamp(1rem, 3vw, 2.5rem) 0;
    }
}

.nav-mega-bar {
    pointer-events: auto;
    margin: 0 auto;
    max-width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem clamp(0.75rem, 2vw, 1.5rem);
    padding: 0.5rem clamp(0.85rem, 2vw, 1.75rem);
    min-height: var(--header-height, 96px);
    background: var(--nav-mega-bar-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid transparent;
    border-bottom: 1px solid var(--brand-border);
    border-radius: 0;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.65) inset, 0 4px 24px rgba(10, 37, 64, 0.06);
    transition:
        max-width 0.38s cubic-bezier(0.4, 0, 0.2, 1),
        border-radius 0.38s cubic-bezier(0.4, 0, 0.2, 1),
        box-shadow 0.38s cubic-bezier(0.4, 0, 0.2, 1),
        border-color 0.38s ease,
        padding 0.35s ease,
        background 0.35s ease,
        min-height 0.35s ease;
}

.nav-mega-shell.is-floating .nav-mega-bar {
    max-width: min(1280px, 100%);
    border-radius: var(--nav-mega-float-radius);
    border: 1px solid var(--nav-mega-bar-border);
    border-bottom: 1px solid var(--nav-mega-bar-border);
    min-height: 0;
    padding: 0.3rem clamp(0.85rem, 2vw, 1.75rem);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.7) inset,
        0 12px 40px rgba(10, 37, 64, 0.12),
        0 4px 12px rgba(10, 37, 64, 0.06);
    background: rgba(255, 255, 255, 0.96);
}

.nav-mega-bar .logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-mega-bar .logo img {
    height: clamp(64px, 14vw, 140px);
    width: auto;
    object-fit: contain;
    display: block;
    transition: height 0.35s ease;
}

.nav-mega-shell.is-floating .nav-mega-bar .logo img {
    height: clamp(54px, 11vw, 108px);
}

/* Misma fila que .header.site-header .nav-links (site-public.css) */
.nav-mega-bar .nav-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.25rem clamp(0.65rem, 1.5vw, 1.35rem);
    min-width: 0;
}

.nav-mega-bar .nav-links > a:not(.btn) {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    font-size: clamp(0.92rem, 1.5vw, 1.2rem);
    font-family: var(--font-ui), sans-serif;
    padding: 0.45rem 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-mega-bar .nav-links > a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-mega-bar .nav-links > a:not(.btn):hover::after,
.nav-mega-bar .nav-links > a:not(.btn).active::after {
    width: 100%;
}

.nav-mega-bar .nav-links > a:not(.btn):hover,
.nav-mega-bar .nav-links > a:not(.btn).active {
    color: var(--primary);
}

.nav-mega-bar .nav-links .btn {
    margin-left: 0.25rem;
}

.nav-mega-bar .nav-links .btn-primary {
    background: var(--gradient-primary);
    color: var(--dark);
    border: none;
    font-weight: 600;
    font-size: clamp(0.92rem, 1.35vw, 1.08rem);
    padding: 0.55rem 1.45rem;
    border-radius: var(--radius-lg);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: transform var(--ease-base), box-shadow var(--ease-base);
}

.nav-mega-bar .nav-links .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.nav-mega-bar .nav-links .btn-secondary {
    background: transparent;
    color: var(--dark);
    border: 2px solid var(--brand-border-strong);
    font-weight: 600;
    font-size: clamp(0.92rem, 1.35vw, 1.08rem);
    padding: 0.55rem 1.45rem;
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: border-color var(--ease-fast), background var(--ease-fast);
}

.nav-mega-bar .nav-links .btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(0, 217, 217, 0.06);
}

.nav-mega-bar .nav-links .lang-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 0.75rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--brand-border);
}

.nav-mega-bar .nav-links .lang-selector a {
    font-size: clamp(0.82rem, 1.15vw, 1.02rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    text-decoration: none;
    color: var(--gray);
    padding: 0.32rem 0.55rem;
    border-radius: var(--radius-sm);
    opacity: 0.55;
    transition: opacity var(--ease-fast), color var(--ease-fast), background var(--ease-fast);
}

.nav-mega-bar .nav-links .lang-selector a:hover {
    color: var(--dark);
    opacity: 1;
}

.nav-mega-bar .nav-links .lang-selector a.active {
    background: transparent;
    color: var(--primary);
    opacity: 1;
}

.nav-mega-bar .nav-links .user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 0.75rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--brand-border);
}

.nav-mega-bar .nav-links .user-name {
    font-size: clamp(0.88rem, 1.15vw, 1.05rem);
    color: var(--gray);
    font-weight: 500;
}

.nav-mega-bar .nav-links .btn-dashboard,
.nav-mega-bar .nav-links .btn-logout {
    padding: 0.48rem 1.05rem;
    font-size: clamp(0.82rem, 1.1vw, 0.98rem);
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background var(--ease-fast), color var(--ease-fast), border-color var(--ease-fast);
}

.nav-mega-bar .nav-links .btn-dashboard {
    color: var(--primary);
    border: 2px solid var(--primary);
    background: transparent;
}

.nav-mega-bar .nav-links .btn-dashboard:hover {
    background: var(--primary);
    color: var(--dark);
}

.nav-mega-bar .nav-links .btn-logout {
    color: var(--brand-danger);
    border: 2px solid var(--brand-danger);
    background: transparent;
}

.nav-mega-bar .nav-links .btn-logout:hover {
    background: var(--brand-danger);
    color: #fff;
}

@media (max-width: 768px) {
    .nav-mega-bar {
        flex-wrap: wrap;
        padding: 0.5rem 1rem;
        gap: 0.5rem 0.75rem;
    }

    .nav-mega-bar .nav-links {
        width: 100%;
        justify-content: flex-end;
        gap: 0.35rem 0.75rem;
    }

    .nav-mega-bar .nav-links > a:not(.btn) {
        font-size: clamp(0.88rem, 3.2vw, 1.05rem);
    }

    .nav-mega-bar .nav-links .btn-primary,
    .nav-mega-bar .nav-links .btn-secondary {
        font-size: clamp(0.88rem, 3vw, 1.02rem);
        padding: 0.5rem 1.15rem;
    }
}

body.nav-mega-demo-page.site-public {
    padding-top: 0;
}

body.nav-mega-demo-page #contenido-principal {
    padding-top: var(--nav-mega-header-offset);
}

.nav-mega-demo-wrap {
    max-width: 56rem;
    margin: 0 auto;
    padding-left: clamp(1rem, 4vw, 2rem);
    padding-right: clamp(1rem, 4vw, 2rem);
    padding-bottom: 4rem;
}

.nav-mega-demo-hero {
    padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2rem, 5vw, 3rem);
}

.nav-mega-demo-hero h1 {
    font-family: var(--font-ui), system-ui, sans-serif;
    font-size: clamp(1.75rem, 4vw, 2.35rem);
    color: var(--brand-dark);
    margin: 0 0 0.75rem;
}

.nav-mega-demo-hero p {
    font-family: var(--font-body), system-ui, sans-serif;
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--brand-text-muted);
    margin: 0 0 0.75rem;
    max-width: 42rem;
}

.nav-mega-demo-url code {
    font-size: 0.95rem;
    background: var(--brand-border);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
}

.nav-mega-demo-block {
    padding: 2rem 0;
    border-top: 1px solid var(--brand-border);
}

.nav-mega-demo-block h2 {
    font-family: var(--font-ui), system-ui, sans-serif;
    font-size: 1.35rem;
    color: var(--brand-dark);
    margin: 0 0 0.65rem;
}

.nav-mega-demo-block p {
    font-family: var(--font-body), system-ui, sans-serif;
    line-height: 1.65;
    color: var(--brand-text);
    margin: 0;
}