/* K RESET METHOD™ — design tokens (ver docs/design-system.md) + header/footer/botones.
   Estilos del resto de las secciones (hero, pilares, equipo, etc.) llegan en Fase 3. */

:root {
    /* Color — tema oscuro */
    --color-bg: #0a0a0a;
    --color-bg-elevated: #121212;
    --color-text: #f5f5f5;
    --color-text-muted: #b3b3b3;
    --color-accent: #5ec8e8;
    --color-border: #2a2a2a;

    /* Tipografía — "Atlético impactante" */
    --font-heading: 'Archivo Black', system-ui, sans-serif;
    --font-body: 'Manrope', system-ui, sans-serif;
    --font-quote: 'Cormorant Garamond', Georgia, serif;

    /* Ancho de contenido de lectura — homologado en todas las secciones */
    --content-width: min(1120px, 90%);

    /* Espaciado */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.6;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    line-height: 1.15;
    margin: 0 0 var(--space-sm);
}

a {
    color: var(--color-accent);
}

img {
    max-width: 100%;
    display: block;
}

blockquote {
    font-family: var(--font-quote);
    font-style: italic;
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ---------- Layout / utilidades ---------- */

.container {
    max-width: 1120px;
    margin-inline: auto;
    padding-inline: var(--space-sm);
}

/* ---------- Botones ---------- */

.btn {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.85rem 1.75rem;
    border-radius: 999px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.btn-primary:hover {
    background-color: #7fd3ee;
    color: var(--color-bg);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Botones "Reservar mi lugar": rectángulo con esquinas ligeramente redondeadas */
.btn-reservar {
    border-radius: 0.5rem;
}

/* ---------- Header ---------- */

.site-header {
    position: fixed;
    inset-inline: 0;
    top: 0;
    z-index: 100;
    background-color: transparent;
    border-bottom: 1px solid transparent;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.site-header.scrolled {
    background-color: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(6px);
    border-bottom-color: var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: var(--space-xs);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.brand-logo {
    height: 40px;
    width: auto;
}

.brand-icon-o {
    height: 80px;
}

.brand-icon-reset {
    height: 60px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: var(--space-md);
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
}

.nav-links a:hover {
    color: var(--color-accent);
}

.nav-links a.active {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 4px;
}

@media (max-width: 860px) {
    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
        background-color: var(--color-bg);
        padding: var(--space-md);
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
        display: none;
    }

    .site-nav.open {
        display: flex;
    }

    .nav-links {
        flex-direction: column;
        gap: var(--space-sm);
    }
}

/* ---------- Footer ---------- */

.site-footer {
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-xl);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    /* +80px de alto (40px arriba + 40px abajo) sobre el padding base */
    padding-block: calc(var(--space-lg) + 40px);
    text-align: center;
}

.footer-brand {
    display: inline-flex;
    align-items: flex-end;
    gap: var(--space-xs);
    opacity: 0.8;
}

.footer-icon-o {
    height: 40px;
    width: auto;
}

.footer-icon-reset {
    height: 25px;
    width: auto;
}

.footer-contacto {
    font-style: normal;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
    text-align: center;
}

.footer-contacto p {
    margin: 0;
}

.footer-contacto a {
    color: var(--color-accent);
    text-decoration: none;
}

.footer-contacto a:hover {
    text-decoration: underline;
}

.footer-social {
    display: flex;
    gap: 5px;
}

.footer-social a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    display: inline-flex;
    opacity: 0.85;
    transition: opacity 0.15s ease;
}

.footer-social a:hover {
    color: var(--color-accent);
    opacity: 1;
}

.footer-social-icon {
    height: 24px;
    width: auto;
}

.footer-privacidad {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-decoration: none;
}

.footer-privacidad:hover {
    color: var(--color-accent);
}

.footer-copy {
    color: var(--color-text-muted);
    font-size: 0.8rem;
    margin: 0;
}

/* ---------- Hero ---------- */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;    /* efecto "fija" al hacer scroll */
    /* Nota: se quitó filter: grayscale(0.3) porque un filter anula el fixed. */
}

.hero-overlay {
    position: absolute;
    inset: 0;
    /* Arriba (barra de menús) ligeramente oscuro para legibilidad; el resto más claro
       para dejar ver mejor la imagen; abajo funde con el fondo de la página. */
    background: linear-gradient(180deg, rgba(10, 10, 10, 0.60) 0%, rgba(10, 10, 10, 0.40) 32%, rgba(10, 10, 10, 0.70) 78%, var(--color-bg) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--content-width);
    padding-block: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.hero-text {
    flex: 0 1 560px;
}

.hero-video {
    flex: 0 0 400px;
    width: 400px;
    height: 600px;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}

.hero-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

@media (max-width: 860px) {
    .hero-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-video {
        width: 100%;
        max-width: 400px;
        align-self: center;
    }
}

.eyebrow {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    margin: 0 0 var(--space-sm);
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-bottom: var(--space-md);
}

.hero-lead {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 60ch;
    margin-bottom: var(--space-md);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

/* ---------- Próximo taller ---------- */

.taller {
    /* Banda gris de lado a lado (la sección abarca todo el ancho) */
    background-color: var(--color-bg-elevated);
    padding-block: var(--space-lg);
}

.taller-card {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.taller-info h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--space-sm);
}

.taller-meta {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-md);
    margin: 0;
    padding: 0;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.taller-meta strong {
    color: var(--color-text);
}

/* ---------- El Método ---------- */

.metodo {
    padding-block: var(--space-xl) var(--space-lg);
}

.metodo-content {
    max-width: var(--content-width);
}

.metodo-content p {
    color: var(--color-text-muted);
}

.pilares-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-sm);
    list-style: none;
    counter-reset: pilar;
    margin: var(--space-md) 0;
    padding: 0;
}

.pilares-list li {
    counter-increment: pilar;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    padding: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 0.9rem;
}

.pilares-list li::before {
    content: counter(pilar) ". ";
    color: var(--color-accent);
}

.metodo-note {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.metodo blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-md);
    margin: var(--space-lg) 0 0;
    font-size: 1.4rem;
    color: var(--color-text);
}

.metodo blockquote cite {
    display: block;
    margin-top: var(--space-xs);
    font-family: var(--font-body);
    font-style: normal;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ---------- Bloques compartidos: pilares, equipo, ciencia, corazón, alianza ---------- */

.pilares, .equipo, .ciencia, .corazon, .alianza, .contacto {
    padding-block: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.pilar {
    max-width: var(--content-width);
    margin: 0 auto var(--space-xl);
}

.pilar:last-child {
    margin-bottom: 0;
}

/* Imagen a la derecha de cada pilar (400px ancho × 500px alto) */
.pilar-img {
    float: right;
    width: 400px;
    height: 500px;
    object-fit: cover;
    border-radius: 0.5rem;
    margin: 0 0 var(--space-sm) var(--space-md);
}

.pilar-index {
    font-family: var(--font-heading);
    color: var(--color-accent);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-xs);
}

.pilar p, .pilar li,
.equipo-bio p, .equipo-certificacion p, .equipo-miembro p,
.ciencia p, .ciencia-tema li,
.corazon-content p, .corazon-content li,
.alianza p {
    color: var(--color-text-muted);
}

.pilar blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-md);
    margin: var(--space-md) 0;
    font-size: 1.2rem;
    color: var(--color-text);
}

.pilar blockquote cite {
    display: block;
    margin-top: var(--space-xs);
    font-family: var(--font-body);
    font-style: normal;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.pilar-aviso, .pilar-nota {
    font-size: 0.85rem;
    font-style: italic;
    color: var(--color-text-muted);
    border-left: 2px solid var(--color-border);
    padding-left: var(--space-sm);
}

/* ---------- Pilares: slider ---------- */
/* Por defecto (sin JS o antes de inicializar) el track se comporta como bloque normal:
   los 6 pilares se ven apilados verticalmente, igual que antes. `.is-active` (agregada
   por site.js) activa el layout de carrusel horizontal. */

.pilares-viewport {
    position: relative;
}

.pilares-slider.is-active .pilares-viewport {
    overflow: hidden;
    max-width: var(--content-width);
    margin-inline: auto;
}

.pilares-track {
    transition: transform 0.5s ease, height 0.3s ease;
}

.pilares-slider.is-active .pilares-track {
    display: flex;
    align-items: flex-start;
}

.pilares-slider.is-active .pilar-slide {
    flex: 0 0 100%;
    max-width: none;
    margin: 0;
    min-width: 0;
}

.pilar-resumen {
    font-size: 1.05rem;
    color: var(--color-text);
    max-width: 60ch;
}

.pilar-toggle {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    background: transparent;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    border-radius: 999px;
    padding: 0.5rem 1.25rem;
    cursor: pointer;
    margin-bottom: var(--space-sm);
    transition: background-color 0.15s ease, color 0.15s ease;
}

.pilar-toggle:hover {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.pilares-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.pilares-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-elevated);
    color: var(--color-text);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease;
    flex-shrink: 0;
}

.pilares-arrow:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.pilares-dots {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.pilares-dot {
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background-color: transparent;
    padding: 0;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.pilares-dot:hover {
    border-color: var(--color-accent);
}

.pilares-dot[aria-selected="true"] {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    transform: scale(1.25);
}

@media (prefers-reduced-motion: reduce) {
    .pilares-track {
        transition: none;
    }
}

.tabla-wrap {
    overflow-x: auto;
    margin: var(--space-md) 0;
}

.tabla-fuerza-cardio {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.tabla-fuerza-cardio th, .tabla-fuerza-cardio td {
    border: 1px solid var(--color-border);
    padding: var(--space-xs) var(--space-sm);
    text-align: left;
    vertical-align: top;
}

.tabla-fuerza-cardio th {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    color: var(--color-accent);
    background-color: var(--color-bg-elevated);
}

/* ---------- Equipo ---------- */

.equipo {
    /* Fondo fijo (parallax) con capa oscura para legibilidad del texto */
    background-image:
        linear-gradient(rgba(10, 10, 10, 0.72), rgba(10, 10, 10, 0.72)),
        url('/img/bgEquipo.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.equipo-bio {
    max-width: var(--content-width);
}

.equipo-social a {
    color: var(--color-accent);
}

.equipo-certificacion, .equipo-miembro {
    max-width: var(--content-width);
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

/* ---------- Respaldo científico ---------- */

.ciencia-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.ciencia-tema h4 {
    font-size: 1rem;
    color: var(--color-accent);
}

.ciencia-tema ul {
    padding-left: 1.1rem;
    font-size: 0.85rem;
}

/* Bullets de mecanismo (etiqueta en azul, texto tenue) */
.ciencia-bullets {
    margin: var(--space-md) 0;
    padding-left: 1.2rem;
}

.ciencia-bullets li {
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.ciencia-bullets li strong {
    color: var(--color-accent);
}

/* Datos-ancla en formato de stats */
.ciencia-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

.ciencia-stat {
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: var(--space-md);
}

.ciencia-stat .ciencia-stat-num {
    font-family: var(--font-heading);
    color: var(--color-accent);
    font-size: 1.9rem;
    line-height: 1.1;
    margin: 0 0 var(--space-sm);
}

.ciencia-stat .ciencia-stat-num span {
    font-size: 1rem;
    color: var(--color-accent);
}

.ciencia-stat p:last-child {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.ciencia-miembro {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    max-width: var(--content-width);
}

.ciencia-sabermas {
    margin-top: var(--space-sm);
}

.ciencia-sabermas > summary {
    cursor: pointer;
    width: fit-content;
    list-style: none;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    color: var(--color-accent);
}

.ciencia-sabermas > summary::-webkit-details-marker {
    display: none;
}

.ciencia-sabermas > summary::after {
    content: " +";
}

.ciencia-sabermas[open] > summary::after {
    content: " –";
}

.ciencia-sabermas-body {
    margin-top: var(--space-sm);
}

/* ---------- El corazón del método ---------- */

.corazon-content {
    max-width: var(--content-width);
}

.corazon-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-md);
    margin: var(--space-lg) 0 0;
    font-size: 1.3rem;
    color: var(--color-text);
}

.corazon-content blockquote cite {
    display: block;
    margin-top: var(--space-xs);
    font-family: var(--font-body);
    font-style: normal;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ---------- Alianza científica ---------- */

.alianza {
    max-width: var(--content-width);
    margin-inline: auto;
}

/* ---------- Contacto ---------- */

.contacto {
    position: relative;
    /* Capa oscura ligera sobre la imagen (solo para legibilidad del texto/formulario) */
    background-image:
        linear-gradient(rgba(10, 10, 10, 0.40), rgba(10, 10, 10, 0.40)),
        url('/img/bgContacto.jpg');
    background-size: cover;          /* la imagen cubre el 100% del alto de la sección */
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;    /* efecto "fija" al hacer scroll */
}

/* Fundido oscuro hacia abajo, para mezclar con el negro del footer */
.contacto::after {
    content: "";
    position: absolute;
    inset-inline: 0;
    bottom: 0;
    height: 320px;
    background: linear-gradient(180deg, rgba(10, 10, 10, 0) 0%, var(--color-bg) 100%);
    z-index: 1;
    pointer-events: none;
}

.contacto-content {
    position: relative;
    z-index: 2;              /* por encima del fundido inferior (.contacto::after) */
    max-width: 560px;
    text-align: center;
    margin-inline: auto;
}

.contacto-lead {
    color: var(--color-text);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.contacto-form {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-row label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text);
}

.form-row input, .form-row textarea {
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
}

.form-row input:focus, .form-row textarea:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-color: var(--color-accent);
}

.form-error {
    color: #ff8080;
    font-size: 0.8rem;
}

.form-summary {
    color: #ff8080;
    font-size: 0.9rem;
}

.form-summary ul {
    margin: 0;
    padding-left: 1.1rem;
}

.contacto-form button {
    margin-top: var(--space-xs);
    align-self: flex-start;
}

.form-success {
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-accent);
    border-radius: 0.75rem;
    padding: var(--space-md);
}

/* ---------- Scroll-reveal ---------- */

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .reveal {
        transition: none;
        opacity: 1;
        transform: none;
    }
}