:root {
    --azul-profundo: #0a1f3d;
    --azul-oscuro: #123a6b;
    --azul-medio: #1a5f9e;
    --azul-vivo: #0ea5c9;
    --azul-claro: #5ec8e8;
    --blanco: #ffffff;
    --hielo: #eef5fa;
    --texto: #1a2332;
    --texto-suave: #5a6778;
    --font-display: "Barlow Condensed", system-ui, sans-serif;
    --font-body: "Source Sans 3", system-ui, sans-serif;
    --nav-h: 72px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --max: 1180px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--blanco);
    color: var(--texto);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
}

/* ===== BUTTONS ===== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-decoration: none;
    border-radius: 4px;
    transition: transform 0.3s var(--ease), background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--azul-vivo);
    color: var(--blanco);
}

.btn-primary:hover {
    background: #0b8fb0;
}

.btn-ghost {
    background: transparent;
    color: var(--blanco);
    border: 1.5px solid rgba(255, 255, 255, 0.55);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--blanco);
}

/* ===== NAVBAR ===== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 40px;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    background: transparent;
    transition: background 0.35s ease, box-shadow 0.35s ease, backdrop-filter 0.35s ease;
}

.navbar.scrolled {
    background: rgba(10, 31, 61, 0.92);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--blanco);
}

.logo img {
    height: 48px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.05;
}

.club-name {
    font-size: 0.7rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.club-main {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.14em;
}

.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    position: relative;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.92);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.25s ease;
}

.nav-links a:not(.nav-cta)::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: var(--azul-claro);
    transition: width 0.3s var(--ease);
}

.nav-links a:not(.nav-cta):hover {
    color: var(--blanco);
}

.nav-links a:not(.nav-cta):hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 18px;
    border: 1.5px solid rgba(255, 255, 255, 0.45);
    border-radius: 4px;
}

.nav-cta:hover {
    background: var(--blanco);
    color: var(--azul-profundo);
    border-color: var(--blanco);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--blanco);
    margin: 0 auto;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ===== HERO ===== */

.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--blanco);
    padding: calc(var(--nav-h) + 40px) 24px 80px;
    overflow: hidden;
}

.hero-media {
    position: absolute;
    inset: 0;
    background:
        url("https://images.unsplash.com/photo-1530549387789-4c1017266635?auto=format&fit=crop&w=1920&q=80")
        center / cover no-repeat;
    transform: scale(1.05);
    animation: hero-zoom 18s ease-out forwards;
}

@keyframes hero-zoom {
    to {
        transform: scale(1);
    }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(10, 31, 61, 0.55) 0%, rgba(10, 31, 61, 0.72) 45%, rgba(10, 31, 61, 0.88) 100%),
        radial-gradient(ellipse at 30% 20%, rgba(14, 165, 201, 0.22), transparent 55%);
}

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

.hero-brand {
    margin: 0 0 18px;
    font-family: var(--font-display);
    font-size: clamp(3.2rem, 10vw, 6.5rem);
    font-weight: 700;
    letter-spacing: 0.16em;
    line-height: 0.95;
    color: var(--blanco);
    animation: fade-up 0.9s var(--ease) both;
}

.hero h1 {
    margin: 0 0 16px;
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3.5vw, 2.35rem);
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.95);
    animation: fade-up 0.9s var(--ease) 0.12s both;
}

.hero-lead {
    margin: 0 auto 32px;
    max-width: 480px;
    font-size: 1.1rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.85);
    animation: fade-up 0.9s var(--ease) 0.22s both;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    animation: fade-up 0.9s var(--ease) 0.32s both;
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(28px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-scroll {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    width: 28px;
    height: 44px;
    border: 1.5px solid rgba(255, 255, 255, 0.45);
    border-radius: 16px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.hero-scroll span {
    width: 4px;
    height: 8px;
    border-radius: 2px;
    background: var(--blanco);
    animation: scroll-dot 1.6s ease-in-out infinite;
}

@keyframes scroll-dot {
    0%, 100% {
        opacity: 0.35;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(10px);
    }
}

/* ===== SECTION INTRO ===== */

.section-intro {
    text-align: center;
    max-width: 560px;
    margin: 0 auto 56px;
}

.section-intro h2 {
    margin: 0 0 12px;
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    line-height: 1.1;
}

.section-intro p {
    margin: 0;
    font-size: 1.05rem;
    color: var(--texto-suave);
}

/* ===== ESTILOS ===== */

.estilos-full {
    padding: 100px 40px;
    background:
        linear-gradient(180deg, var(--azul-profundo) 0%, #0d2748 100%);
    color: var(--blanco);
}

.estilos-full .section-intro p {
    color: rgba(255, 255, 255, 0.7);
}

.grid-estilos {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: var(--max);
    margin: 0 auto;
}

.card-estilo {
    position: relative;
    min-height: 420px;
    border-radius: 6px;
    background-size: cover;
    background-position: center;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    padding: 28px;
    transition: transform 0.5s var(--ease);
}

.card-estilo:hover {
    transform: translateY(-6px);
}

.card-estilo h3 {
    position: relative;
    z-index: 2;
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.85rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--blanco);
}

.overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(6, 18, 36, 0.92) 0%,
        rgba(10, 40, 70, 0.25) 55%,
        transparent 100%
    );
    transition: background 0.4s ease;
}

.card-estilo:hover .overlay {
    background: linear-gradient(
        to top,
        rgba(6, 18, 36, 0.95) 0%,
        rgba(14, 165, 201, 0.25) 60%,
        transparent 100%
    );
}

.pecho { background-image: url("images/pecho.jpg"); }
.libre { background-image: url("images/libre.jpg"); }
.mariposa { background-image: url("images/mariposa.jpg"); }
.espalda { background-image: url("images/espalda.jpg"); }

/* ===== AGUAS ABIERTAS ===== */

.aguas-abiertas {
    position: relative;
    min-height: 70vh;
    padding: 120px 40px;
    background-image: url("https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1920&q=80");
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--blanco);
}

.aguas-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(6, 22, 45, 0.88),
        rgba(12, 55, 90, 0.82)
    );
}

.aguas-contenido {
    position: relative;
    z-index: 2;
    max-width: 640px;
}

.aguas-contenido h2 {
    margin: 0 0 14px;
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.subtitulo {
    margin: 0 0 24px;
    font-size: 1.15rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    opacity: 0.9;
}

.descripcion {
    margin: 0 0 36px;
    font-size: 1.05rem;
    line-height: 1.75;
    opacity: 0.88;
}

/* ===== BENEFICIOS ===== */

.beneficios-premium {
    padding: 100px 40px;
    background:
        linear-gradient(180deg, #f3f7fb 0%, #eef4f9 100%);
}

.beneficios-layout {
    max-width: var(--max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(280px, 0.95fr) 1.15fr;
    gap: 56px;
    align-items: stretch;
}

.beneficios-visual {
    position: relative;
    min-height: 560px;
    border-radius: 6px;
    overflow: hidden;
}

.beneficios-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.02);
    transition: transform 1.2s var(--ease);
}

.beneficios-visual:hover img {
    transform: scale(1.06);
}

.beneficios-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        transparent 40%,
        rgba(8, 24, 48, 0.75) 100%
    );
    pointer-events: none;
}

.beneficios-visual-caption {
    position: absolute;
    left: 28px;
    right: 28px;
    bottom: 28px;
    z-index: 1;
    color: var(--blanco);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.beneficios-visual-caption span {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--azul-claro);
}

.beneficios-visual-caption strong {
    font-family: var(--font-display);
    font-size: 1.45rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.beneficios-copy .section-intro {
    margin: 0 0 28px;
}

.section-intro--left {
    text-align: left;
    max-width: none;
}

.beneficios-premium .section-intro h2 {
    color: var(--azul-profundo);
}

.beneficios-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid rgba(18, 58, 107, 0.14);
}

.beneficios-list li {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 18px;
    align-items: start;
    padding: 22px 0;
    border-bottom: 1px solid rgba(18, 58, 107, 0.14);
    transition: transform 0.35s var(--ease);
}

.beneficios-list li:hover {
    transform: translateX(6px);
}

.beneficio-num {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--azul-vivo);
    line-height: 1.2;
    padding-top: 2px;
}

.beneficios-list h3 {
    margin: 0 0 6px;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--azul-oscuro);
}

.beneficios-list p {
    margin: 0;
    font-size: 0.98rem;
    color: var(--texto-suave);
    line-height: 1.6;
}

/* ===== HORARIOS ===== */

.horarios-premium {
    padding: 100px 40px;
    background:
        linear-gradient(160deg, var(--azul-profundo) 0%, #0c2d52 55%, #0a3a5c 100%);
    color: var(--blanco);
}

.horarios-premium .section-intro p {
    color: rgba(255, 255, 255, 0.7);
}

.horarios-container {
    max-width: 720px;
    margin: 0 auto;
}

.horarios-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.horario-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 24px;
    padding: 28px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    transition: padding 0.3s var(--ease), background 0.3s ease;
}

.horario-row:hover {
    padding-left: 12px;
    padding-right: 12px;
    background: rgba(255, 255, 255, 0.04);
}

.horario-label {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.horario-time {
    font-size: 1.05rem;
    font-weight: 400;
    color: var(--azul-claro);
    letter-spacing: 0.02em;
    white-space:nowrap;
}

/* ===== CONTACTO ===== */

.contacto-premium {
    position: relative;
    padding: 100px 40px;
    background-image: url("https://images.unsplash.com/photo-1519315901367-f34ff9154487?auto=format&fit=crop&w=1920&q=80");
    background-size: cover;
    background-position: center;
    color: var(--blanco);
}

.contacto-overlay {
    position: absolute;
    inset: 0;
    background: rgba(8, 24, 48, 0.9);
}

.contacto-container {
    position: relative;
    z-index: 2;
    max-width: var(--max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

.contacto-info h2 {
    margin: 0 0 12px;
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.datos {
    list-style: none;
    margin: 0 0 32px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.datos li {
    font-size: 1.02rem;
    line-height: 1.5;
    opacity: 0.95;
}

.datos a {
    color: var(--azul-claro);
    text-decoration: none;
    transition: color 0.25s ease;
}

.datos a:hover {
    color: var(--blanco);
}

.dato-label {
    display: block;
    margin-bottom: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
}

.contacto-mapa iframe {
    width: 100%;
    height: 380px;
    border: 0;
    border-radius: 6px;
    filter: grayscale(0.15) contrast(1.05);
}

/* ===== FOOTER ===== */

footer {
    background: #060f1c;
    color: rgba(255, 255, 255, 0.7);
    padding: 28px 40px;
}

.footer-inner {
    max-width: var(--max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--blanco);
}

.footer-brand img {
    height: 36px;
    width: auto;
    opacity: 0.9;
}

footer p {
    margin: 0;
    font-size: 0.9rem;
}

/* ===== REVEAL ===== */

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 1100px) {
    .grid-estilos {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-estilo {
        min-height: 340px;
    }

    .beneficios-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .beneficios-visual {
        min-height: 320px;
        max-height: 380px;
    }
}

@media (max-width: 900px) {
    .contacto-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .dato-label {
        text-align: center;
    }

    .aguas-abiertas {
        background-attachment: scroll;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0 20px;
    }

    .nav-toggle {
        display: flex;
        z-index: 1002;
    }

    .nav-menu {
        position: fixed;
        inset: 0;
        background: rgba(8, 22, 42, 0.97);
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .nav-menu.open {
        opacity: 1;
        visibility: visible;
    }

    .nav-links {
        flex-direction: column;
        gap: 28px;
        font-size: 1.2rem;
    }

    .nav-cta {
        margin-top: 8px;
    }

    .estilos-full,
    .beneficios-premium,
    .horarios-premium,
    .contacto-premium,
    .aguas-abiertas {
        padding: 80px 20px;
    }

    .section-intro--left {
        text-align: center;
    }

    .beneficios-list li {
        grid-template-columns: 44px 1fr;
        gap: 12px;
        text-align: left;
    }

    .horario-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        text-align: left;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .club-name {
        display: none;
    }
}

@media (max-width: 520px) {
    .grid-estilos {
        grid-template-columns: 1fr;
    }

    .card-estilo {
        min-height: 280px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .hero-media,
    .hero-brand,
    .hero h1,
    .hero-lead,
    .hero-actions,
    .hero-scroll span,
    .reveal {
        animation: none !important;
        transition: none !important;
        opacity: 1;
        transform: none;
    }
}