/* ═══════════════════════════════════════════════════════════════
   Landing Tenant — Vista Pública
   Diseño moderno, responsivo con variables CSS de la empresa
   ═══════════════════════════════════════════════════════════════ */

/* ── Variables por defecto (se sobreescriben con tema.css del tenant) ── */
:root {
    --lt-primary: var(--c-principal, #FE5000);
    --lt-primary-dark: var(--c-principal-hover, #e04700);
    --lt-text: #1e293b;
    --lt-text-muted: #64748b;
    --lt-bg: #ffffff;
    --lt-bg-alt: #f8fafc;
    --lt-border: #e2e8f0;
    --lt-radius: 16px;
    --lt-shadow: 0 4px 24px rgba(0,0,0,0.06);
    --lt-font: var(--fuente-principal, 'Inter', system-ui, -apple-system, sans-serif);
    --lt-max-w: 1200px;
    --lt-transition: 0.3s cubic-bezier(.4,0,.2,1);
}

/* ── Reset & Base ── */
.landing-tenant-page {
    margin: 0;
    padding: 0;
    font-family: var(--lt-font);
    color: var(--lt-text);
    background: var(--lt-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.landing-tenant-page * { box-sizing: border-box; }

.lt-container {
    max-width: var(--lt-max-w);
    margin: 0 auto;
    padding: 0 24px;
}

/* ═══════════════════════════════════════════════════════════════
   HEADER / NAV
   ═══════════════════════════════════════════════════════════════ */
.lt-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--lt-border);
    transition: box-shadow var(--lt-transition);
}

.lt-header.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.lt-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

.lt-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--lt-text);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

.lt-logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.lt-nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.lt-nav-links a {
    text-decoration: none;
    color: var(--lt-text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all var(--lt-transition);
    white-space: nowrap;
}

.lt-nav-links a:hover {
    color: var(--lt-primary);
    background: rgba(254,80,0,0.06);
}

.lt-nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* Hamburger mobile */
.lt-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--lt-text);
}

.lt-hamburger svg { display: block; }

/* ═══════════════════════════════════════════════════════════════
   BOTONES
   ═══════════════════════════════════════════════════════════════ */
.lt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--lt-transition);
    white-space: nowrap;
}

.lt-btn-primary {
    background: var(--lt-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(254,80,0,0.25);
}

.lt-btn-primary:hover {
    background: var(--lt-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(254,80,0,0.35);
}

.lt-btn-outline {
    background: transparent;
    color: var(--lt-primary);
    border: 2px solid var(--lt-primary);
}

.lt-btn-outline:hover {
    background: var(--lt-primary);
    color: #fff;
    transform: translateY(-2px);
}

.lt-btn-sm {
    padding: 8px 20px;
    font-size: 0.85rem;
    border-radius: 8px;
}

/* ═══════════════════════════════════════════════════════════════
   HERO / BANNER
   ═══════════════════════════════════════════════════════════════ */
.lt-hero {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--lt-bg-alt) 0%, #fff 100%);
}

.lt-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.lt-hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.3) 100%);
}

.lt-hero.has-bg .lt-hero-content {
    color: #fff;
}

.lt-hero.has-bg .lt-hero-content .lt-hero-sub {
    color: rgba(255,255,255,0.85);
}

/* Decoración geométrica cuando NO hay imagen de fondo */
.lt-hero:not(.has-bg)::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(254,80,0,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.lt-hero:not(.has-bg)::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(254,80,0,0.05) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.lt-hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    padding: 80px 0;
}

.lt-hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--lt-primary);
    margin-bottom: 16px;
}

.lt-hero-eyebrow::before {
    content: '';
    width: 28px;
    height: 3px;
    background: var(--lt-primary);
    border-radius: 2px;
}

.lt-hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.12;
    margin: 0 0 20px;
    letter-spacing: -0.03em;
}

.lt-hero-sub {
    font-size: 1.15rem;
    color: var(--lt-text-muted);
    margin-bottom: 36px;
    line-height: 1.7;
    max-width: 560px;
}

.lt-hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ═══════════════════════════════════════════════════════════════
   SECCIÓN GENÉRICA
   ═══════════════════════════════════════════════════════════════ */
.lt-section {
    padding: 80px 0;
}

.lt-section-alt {
    background: var(--lt-bg-alt);
}

.lt-section-head {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 56px;
}

.lt-section-head .lt-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--lt-primary);
    margin-bottom: 12px;
}

.lt-section-head h2 {
    font-size: clamp(1.7rem, 3.5vw, 2.4rem);
    font-weight: 800;
    margin: 0 0 12px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.lt-section-head p {
    color: var(--lt-text-muted);
    font-size: 1.05rem;
    margin: 0;
}

/* ═══════════════════════════════════════════════════════════════
   TARJETAS DE CURSOS
   ═══════════════════════════════════════════════════════════════ */
.lt-cursos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}

.lt-curso-card {
    background: var(--lt-bg);
    border-radius: var(--lt-radius);
    overflow: hidden;
    border: 1px solid var(--lt-border);
    transition: all var(--lt-transition);
    position: relative;
}

.lt-curso-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--lt-shadow);
    border-color: transparent;
}

.lt-curso-img {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.lt-curso-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.lt-curso-card:hover .lt-curso-img img {
    transform: scale(1.05);
}

.lt-curso-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--lt-primary);
    color: #fff;
}

.lt-curso-body {
    padding: 20px;
}

.lt-curso-tipo {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--lt-primary);
    margin-bottom: 8px;
}

.lt-curso-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 8px;
    line-height: 1.35;
    color: var(--lt-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lt-curso-desc {
    font-size: 0.85rem;
    color: var(--lt-text-muted);
    line-height: 1.5;
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lt-curso-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--lt-border);
}

.lt-curso-precio {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--lt-text);
}

.lt-curso-precio small {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--lt-text-muted);
    text-decoration: line-through;
    margin-left: 6px;
}

.lt-curso-modalidad {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.78rem;
    color: var(--lt-text-muted);
    font-weight: 500;
}

/* Placeholder cuando no hay imagen */
.lt-curso-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    color: #94a3b8;
}

/* ═══════════════════════════════════════════════════════════════
   CONTACTO / ATENCIÓN AL ALUMNO
   ═══════════════════════════════════════════════════════════════ */
.lt-contacto-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.lt-contacto-info h3 {
    font-size: 1.6rem;
    font-weight: 800;
    margin: 0 0 12px;
    letter-spacing: -0.01em;
}

.lt-contacto-info p {
    color: var(--lt-text-muted);
    font-size: 1rem;
    line-height: 1.7;
    margin: 0 0 28px;
}

.lt-contacto-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.lt-contacto-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--lt-bg);
    border: 1px solid var(--lt-border);
    border-radius: 12px;
    transition: all var(--lt-transition);
    text-decoration: none;
    color: var(--lt-text);
}

.lt-contacto-item:hover {
    border-color: var(--lt-primary);
    box-shadow: 0 4px 16px rgba(254,80,0,0.1);
    transform: translateX(4px);
}

.lt-contacto-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: rgba(254,80,0,0.08);
    color: var(--lt-primary);
}

.lt-contacto-icon svg {
    width: 22px;
    height: 22px;
}

.lt-contacto-item-text {
    display: flex;
    flex-direction: column;
}

.lt-contacto-item-label {
    font-size: 0.78rem;
    color: var(--lt-text-muted);
    font-weight: 500;
}

.lt-contacto-item-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--lt-text);
}

.lt-contacto-cta {
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    border-radius: var(--lt-radius);
    padding: 32px;
    text-align: center;
    color: #fff;
}

.lt-contacto-cta h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0 0 8px;
}

.lt-contacto-cta p {
    opacity: 0.9;
    margin: 0 0 20px;
    font-size: 0.95rem;
}

.lt-btn-whatsapp {
    background: #fff;
    color: #25D366;
    font-weight: 700;
    padding: 14px 32px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: all var(--lt-transition);
    font-size: 0.95rem;
}

.lt-btn-whatsapp:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════ */
.lt-footer {
    background: #0f172a;
    color: #e2e8f0;
    padding: 56px 0 0;
}

.lt-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
}

.lt-footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.lt-footer-brand-name {
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
}

.lt-footer-brand-name img {
    height: 36px;
    width: auto;
}

.lt-footer-brand p {
    color: #94a3b8;
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

.lt-footer-col h4 {
    color: #fff;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 16px;
}

.lt-footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lt-footer-links a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--lt-transition);
}

.lt-footer-links a:hover {
    color: var(--lt-primary);
}

.lt-footer-social {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

.lt-footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.08);
    color: #94a3b8;
    transition: all var(--lt-transition);
    text-decoration: none;
}

.lt-footer-social a:hover {
    background: var(--lt-primary);
    color: #fff;
    transform: translateY(-2px);
}

.lt-footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
    font-size: 0.82rem;
    color: #64748b;
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    .lt-nav-links { display: none; }
    .lt-hamburger { display: flex; }

    /* Mobile menu overlay */
    .lt-mobile-menu {
        position: fixed;
        inset: 0;
        z-index: 999;
        background: rgba(0,0,0,0.5);
        display: none;
        opacity: 0;
        transition: opacity 0.3s;
    }

    .lt-mobile-menu.open {
        display: flex;
        opacity: 1;
    }

    .lt-mobile-menu-panel {
        margin-left: auto;
        width: 280px;
        background: #fff;
        padding: 24px;
        display: flex;
        flex-direction: column;
        gap: 8px;
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }

    .lt-mobile-menu.open .lt-mobile-menu-panel {
        transform: translateX(0);
    }

    .lt-mobile-menu-panel a {
        display: block;
        padding: 12px 16px;
        text-decoration: none;
        color: var(--lt-text);
        font-weight: 500;
        border-radius: 8px;
        transition: background 0.2s;
    }

    .lt-mobile-menu-panel a:hover {
        background: var(--lt-bg-alt);
    }

    .lt-hero { min-height: 400px; }
    .lt-hero-content { padding: 48px 0; }
    .lt-hero h1 { font-size: 2rem; }
    .lt-hero-sub { font-size: 1rem; }

    .lt-section { padding: 56px 0; }

    .lt-cursos-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .lt-contacto-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .lt-footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .lt-hero-actions {
        flex-direction: column;
    }

    .lt-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ═══════════════════════════════════════════════════════════════
   ANIMACIONES DE ENTRADA (Intersection Observer)
   ═══════════════════════════════════════════════════════════════ */
.lt-animate {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.lt-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.lt-animate:nth-child(2) { transition-delay: 0.1s; }
.lt-animate:nth-child(3) { transition-delay: 0.2s; }
.lt-animate:nth-child(4) { transition-delay: 0.3s; }
.lt-animate:nth-child(5) { transition-delay: 0.4s; }
.lt-animate:nth-child(6) { transition-delay: 0.5s; }