/* Hierro — gimnasio (plantilla conceptual)
   Mismo lenguaje que Crespo y Bio Prana (portada a pantalla completa con velo
   y zoom lento, etiquetas con línea, botones rectos con relleno que entra
   desde la izquierda, tarjetas altas que se agrandan), con identidad propia:
   grafito, hueso y rojo hierro; Anton condensada para los títulos.
   Sin bordes redondeados. */
:root {
    --black: #0d0d0c;
    --black-2: #161615;
    --black-3: #1f1f1d;
    --bone: #f1eee7;
    --bone-2: #e5e1d6;
    --ink: #161615;
    --ink-soft: #5d5a54;
    --red: #d9482b;
    --red-light: #f0684a;
    --red-deep: #a8331c;
    --on-dark: #f1eee7;
    --on-dark-muted: rgba(241, 238, 231, 0.66);
    --line: rgba(22, 22, 21, 0.14);
    --line-dark: rgba(241, 238, 231, 0.14);
    --display: 'Anton', Impact, sans-serif;
    --sans: 'Archivo', system-ui, sans-serif;
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    --pad: clamp(20px, 5vw, 72px);
    --max: 1240px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { background: var(--black); color: var(--on-dark); font-family: var(--sans); font-size: 17px; line-height: 1.65; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); font-weight: 400; text-transform: uppercase; letter-spacing: 0.01em; line-height: 0.92; }
h2 { font-size: clamp(2.8rem, 6.4vw, 5.4rem); }
.skip { position: absolute; left: -999px; top: 8px; z-index: 200; padding: 8px 12px; background: var(--red); color: #fff; }
.skip:focus { left: 8px; }

/* Pantalla de carga */
.preloader { position: fixed; inset: 0; z-index: 300; display: grid; place-content: center; justify-items: center; gap: 16px; background: var(--black); transition: opacity 0.7s var(--ease), visibility 0.7s var(--ease); }
.preloader.is-done { opacity: 0; visibility: hidden; }
.pre-word { font-family: var(--display); font-size: 3rem; letter-spacing: 0.04em; }
.pre-word b, .brand span, .foot-brand span { color: var(--red); font-weight: 400; }
.pre-line { width: 90px; height: 2px; background: var(--red); transform-origin: left; animation: preLine 1.1s ease-in-out infinite; }
@keyframes preLine { 0% { transform: scaleX(0); } 50% { transform: scaleX(1); } 100% { transform: scaleX(0); transform-origin: right; } }

/* Etiqueta con línea */
.eyebrow { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; font-size: 12px; font-weight: 600; letter-spacing: 0.28em; text-transform: uppercase; color: var(--red-light); }
.eb-line { flex: none; width: 42px; height: 2px; background: var(--red); }

/* Botones rectos */
.btn {
    position: relative; overflow: hidden;
    display: inline-flex; align-items: center; justify-content: center; gap: 18px;
    padding: 18px 32px;
    border: 1px solid var(--red);
    background: var(--red);
    color: #fff;
    font: 700 12.5px/1 var(--sans); letter-spacing: 0.18em; text-transform: uppercase; text-decoration: none; white-space: nowrap;
    cursor: pointer;
    transition: color 0.35s ease, border-color 0.35s ease;
}
.btn::before { content: ''; position: absolute; inset: 0; background: var(--bone); transform: translateX(-101%); transition: transform 0.45s var(--ease); }
.btn > span { position: relative; z-index: 1; }
.btn .arr { font-size: 16px; transition: transform 0.4s var(--ease); }
.btn:hover, .btn:focus-visible { color: var(--black); border-color: var(--bone); outline: none; }
.btn:hover::before, .btn:focus-visible::before { transform: translateX(0); }
.btn:hover .arr { transform: translateX(5px); }
.btn-line { background: transparent; border-color: rgba(241, 238, 231, 0.45); }
.btn-sm { padding: 13px 22px; font-size: 11.5px; }

/* Encabezado */
.top { position: fixed; inset: 0 0 auto 0; z-index: 100; display: flex; align-items: center; gap: 32px; padding: 18px var(--pad); transition: background-color 0.4s ease, padding 0.4s ease; }
.top.is-scrolled { background: rgba(13, 13, 12, 0.94); padding-block: 12px; box-shadow: 0 1px 0 var(--line-dark); }
.brand { font-family: var(--display); font-size: 1.9rem; letter-spacing: 0.04em; text-decoration: none; }
.nav { display: flex; gap: 30px; margin-left: auto; }
.nav a { position: relative; font-size: 12.5px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; text-decoration: none; color: var(--on-dark-muted); transition: color 0.2s; }
.nav a::after { content: ''; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.nav a:hover, .nav a:focus-visible { color: var(--bone); }
.nav a:hover::after, .nav a:focus-visible::after { transform: scaleX(1); }
.menu-btn, .menu { display: none; }

/* Portada */
.hero { position: relative; min-height: 100svh; display: flex; flex-direction: column; justify-content: center; overflow: hidden; background: var(--black); }
.hero-bg { position: absolute; inset: 0; overflow: hidden; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; object-position: 58% 40%; filter: grayscale(0.35) contrast(1.15); transform-origin: 60% 45%; animation: heroZoom 26s ease-in-out infinite alternate; }
@keyframes heroZoom { to { transform: scale(1.08); } }
.hero-veil { position: absolute; inset: 0; background: radial-gradient(ellipse 40% 50% at 75% 45%, rgba(217, 72, 43, 0.16), transparent 70%), linear-gradient(100deg, rgba(10, 10, 9, 0.94) 0%, rgba(10, 10, 9, 0.7) 40%, rgba(10, 10, 9, 0.25) 75%, rgba(10, 10, 9, 0.45) 100%), linear-gradient(to top, rgba(10, 10, 9, 0.85), transparent 35%); }
.hero-in { position: relative; z-index: 2; width: min(780px, calc(100% - 2 * var(--pad))); margin-left: max(var(--pad), calc((100% - var(--max)) / 2 + var(--pad))); padding-top: 90px; animation: heroIn 1s var(--ease) 0.8s both; }
@keyframes heroIn { from { opacity: 0; transform: translateY(26px); } }
.hero h1 { font-size: clamp(4.4rem, 12vw, 10.5rem); margin-bottom: 24px; }
.hero h1 span { display: block; }
.hero h1 .l2 { color: transparent; -webkit-text-stroke: 2px var(--bone); }
.lead { max-width: 480px; margin-bottom: 36px; font-size: 1.1rem; color: var(--on-dark-muted); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; }
.stats { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(3, 1fr); width: min(var(--max), calc(100% - 2 * var(--pad))); margin: 56px auto 0; border-top: 1px solid var(--line-dark); }
.stats div { padding: 22px 0 28px; }
.stats div + div { padding-left: 28px; border-left: 1px solid var(--line-dark); }
.stats dt { font-family: var(--display); font-size: clamp(2.4rem, 4.4vw, 3.6rem); line-height: 1; }
.stats dd { margin-top: 6px; font-size: 12px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--on-dark-muted); }

/* Cinta */
.ticker { overflow: hidden; background: var(--red); color: #fff; }
.ticker-track { display: flex; width: max-content; animation: slide 30s linear infinite; }
.ticker span { padding: 16px 26px; font-family: var(--display); font-size: 1.6rem; text-transform: uppercase; letter-spacing: 0.03em; white-space: nowrap; }
.ticker span::after { content: '/'; margin-left: 52px; opacity: 0.55; }
@keyframes slide { to { transform: translateX(-50%); } }

/* Secciones */
.section { max-width: var(--max); margin: 0 auto; padding: clamp(80px, 13vh, 150px) var(--pad); }
.head { margin-bottom: 48px; }
.head-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 28px; }

/* Disciplinas: tarjetas altas que crecen con el mouse */
.disc { display: flex; gap: 12px; height: 560px; }
.d-card { position: relative; flex: 1 1 0; min-width: 0; overflow: hidden; background: var(--black-2); transition: flex-grow 0.6s var(--ease); }
.d-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: grayscale(0.85) brightness(0.7); transition: transform 0.9s var(--ease), filter 0.6s ease; }
.d-card::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 10, 9, 0.95) 8%, transparent 60%); }
.d-body { position: absolute; z-index: 1; left: 26px; right: 26px; bottom: 26px; }
.num { display: block; margin-bottom: 10px; font-size: 12px; font-weight: 700; letter-spacing: 0.24em; color: var(--red-light); }
.d-card h3 { font-size: 2.6rem; margin-bottom: 10px; }
.d-card p { max-width: 34ch; color: var(--on-dark-muted); font-size: 15.5px; max-height: 0; opacity: 0; overflow: hidden; transition: max-height 0.6s var(--ease), opacity 0.4s ease; }
.disc:hover .d-card { flex-grow: 0.7; }
.disc .d-card:hover { flex-grow: 1.9; }
.d-card:hover img { transform: scale(1.05); filter: grayscale(0) brightness(0.85); }
.d-card:hover p, .d-card:focus-within p { max-height: 8em; opacity: 1; }

/* Horarios (bloque claro) */
.horarios { max-width: none; background: var(--bone); color: var(--ink); padding-inline: max(var(--pad), calc((100vw - var(--max)) / 2 + var(--pad))); }
.horarios .eyebrow { color: var(--red-deep); }
.filters { display: flex; flex-wrap: wrap; gap: 0; margin-bottom: 28px; border: 1px solid var(--line); width: fit-content; }
.chip { padding: 13px 20px; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--ink-soft); font: 700 12px/1 var(--sans); letter-spacing: 0.18em; text-transform: uppercase; cursor: pointer; transition: background-color 0.25s, color 0.25s; }
.chip:last-child { border-right: 0; }
.chip:hover { color: var(--ink); }
.chip.is-on { background: var(--ink); color: var(--bone); }
.chip:focus-visible { outline: 2px solid var(--red); outline-offset: -2px; }
.week { display: grid; grid-template-columns: repeat(6, 1fr); border-top: 2px solid var(--ink); }
.day { border-right: 1px solid var(--line); min-width: 0; }
.day:last-child { border-right: 0; }
.day h3 { padding: 14px 12px; font-size: 1.5rem; border-bottom: 1px solid var(--line); }
.day h3.is-today { background: var(--red); color: #fff; }
.class { display: grid; gap: 2px; padding: 12px; border-bottom: 1px solid var(--line); transition: opacity 0.3s, background-color 0.3s; }
.class time { font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--red-deep); }
.class strong { font-size: 15px; }
.class span { font-size: 13px; color: var(--ink-soft); }
.class.is-dim { opacity: 0.18; }
.class.is-hit { background: rgba(217, 72, 43, 0.08); }
.note { margin-top: 24px; font-size: 14px; color: var(--ink-soft); }

/* Planes */
.toggle { display: flex; border: 1px solid var(--line-dark); }
.toggle label { position: relative; cursor: pointer; }
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle span { display: block; padding: 13px 20px; font-size: 12px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--on-dark-muted); transition: all 0.25s; }
.toggle em { font-style: normal; color: var(--red-light); }
.toggle input:checked + span { background: var(--bone); color: var(--black); }
.toggle input:checked + span em { color: var(--red-deep); }
.toggle input:focus-visible + span { outline: 2px solid var(--red); outline-offset: -2px; }
.plans { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line-dark); }
.plan { position: relative; display: flex; flex-direction: column; padding: 36px 32px; border-right: 1px solid var(--line-dark); }
.plan:last-child { border-right: 0; }
.plan h3 { font-size: 2.2rem; margin-bottom: 18px; }
.price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 26px; padding-bottom: 26px; border-bottom: 1px solid var(--line-dark); }
.price span { font-family: var(--display); font-size: 3.4rem; line-height: 1; font-variant-numeric: tabular-nums; }
.price small { color: var(--on-dark-muted); font-size: 14px; }
.plan ul { list-style: none; display: grid; gap: 12px; margin-bottom: 32px; color: var(--on-dark-muted); font-size: 15.5px; }
.plan li { display: flex; gap: 12px; }
.plan li::before { content: ''; flex: none; width: 10px; height: 2px; margin-top: 0.8em; background: var(--red); }
.plan .btn { margin-top: auto; }
.plan-hot { background: var(--black-3); box-shadow: inset 0 3px 0 var(--red); }
.badge { position: absolute; top: 0; right: 0; padding: 8px 14px; background: var(--red); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; }

/* Clase gratis (bloque claro) */
.prueba { max-width: none; display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(32px, 6vw, 96px); background: var(--bone); color: var(--ink); padding-inline: max(var(--pad), calc((100vw - var(--max)) / 2 + var(--pad))); }
.prueba .eyebrow { color: var(--red-deep); }
.prueba h2 { margin-bottom: 18px; }
.prueba-copy p:last-child { max-width: 38ch; color: var(--ink-soft); }
.form { display: grid; gap: 22px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label { display: grid; gap: 10px; font-size: 11.5px; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-soft); }
.form input { width: 100%; padding: 14px 0; border: 0; border-bottom: 2px solid var(--line); background: transparent; color: var(--ink); font: 500 17px/1.3 var(--sans); transition: border-color 0.25s; }
.form input:focus { outline: none; border-color: var(--red); }
.form fieldset { border: 0; }
.form legend { margin-bottom: 12px; font-size: 11.5px; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-soft); }
.opts { display: flex; flex-wrap: wrap; border: 1px solid var(--line); width: fit-content; }
.opts label { position: relative; display: block; cursor: pointer; letter-spacing: 0.16em; }
.opts input { position: absolute; opacity: 0; pointer-events: none; }
.opts span { display: block; padding: 13px 18px; border-right: 1px solid var(--line); color: var(--ink-soft); transition: all 0.25s; }
.opts label:last-child span { border-right: 0; }
.opts input:checked + span { background: var(--ink); color: var(--bone); }
.opts input:focus-visible + span { outline: 2px solid var(--red); outline-offset: -2px; }
.form .btn { justify-self: start; }
.form .btn::before { background: var(--ink); }
.form .btn:hover, .form .btn:focus-visible { color: var(--bone); border-color: var(--ink); }
.form-msg { min-height: 1.6em; font-weight: 600; color: var(--red-deep); }
.form-msg.ok { color: #2f6b3c; }

/* Contacto */
.contacto { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: end; }
.addr { margin-top: 18px; color: var(--on-dark-muted); font-size: 1.1rem; }
.hours { width: 100%; border-collapse: collapse; }
.hours th, .hours td { padding: 18px 0; border-bottom: 1px solid var(--line-dark); text-align: left; }
.hours th { font-size: 12.5px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--on-dark-muted); }
.hours td { text-align: right; font-family: var(--display); font-size: 1.7rem; font-weight: 400; }

/* Pie */
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 12px; padding: 28px var(--pad); border-top: 1px solid var(--line-dark); color: var(--on-dark-muted); font-size: 14px; }
.foot-brand { font-family: var(--display); font-size: 1.6rem; color: var(--bone); letter-spacing: 0.04em; }
.foot a { color: var(--red-light); }

/* Aparición */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.9s ease, transform 1s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* Celular */
@media (max-width: 900px) {
    body { font-size: 16px; }
    .nav, .top > .btn { display: none; }
    .menu-btn { display: grid; gap: 7px; margin-left: auto; width: 44px; height: 44px; place-content: center; border: 1px solid var(--line-dark); background: transparent; color: var(--bone); cursor: pointer; }
    .menu-btn span { display: block; width: 18px; height: 2px; background: currentColor; transition: transform 0.3s; }
    .menu-btn[aria-expanded="true"] span:first-child { transform: translateY(4.5px) rotate(45deg); }
    .menu-btn[aria-expanded="true"] span:last-child { transform: translateY(-4.5px) rotate(-45deg); }
    .menu:not([hidden]) { position: fixed; inset: 0; z-index: 90; display: grid; align-content: center; padding: 0 var(--pad); background: var(--black); }
    .menu a { padding: 12px 0; font-family: var(--display); font-size: 2.6rem; text-transform: uppercase; text-decoration: none; border-bottom: 1px solid var(--line-dark); }
    .hero { justify-content: flex-end; padding-bottom: 28px; }
    .hero-in { margin-left: var(--pad); }
    .stats { margin-top: 36px; }
    .stats div + div { padding-left: 14px; }
    .disc { flex-direction: column; height: auto; }
    .d-card { flex: none; height: 260px; }
    .disc:hover .d-card, .disc .d-card:hover { flex-grow: 0; }
    .d-card p { max-height: none; opacity: 1; }
    .week { grid-template-columns: repeat(6, minmax(150px, 1fr)); overflow-x: auto; scroll-snap-type: x mandatory; }
    .day { scroll-snap-align: start; }
    .plans { grid-template-columns: 1fr; }
    .plan { border-right: 0; border-bottom: 1px solid var(--line-dark); }
    .prueba, .contacto { grid-template-columns: 1fr; }
    .form .row { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
    .preloader { display: none; }
    html { scroll-behavior: auto; }
}