/* Landing de Gymnastés. Mismos colores y tipografías que la app (css/tokens.css). */
:root {
    --brand: #ff6b35;
    --brand-deep: #e2551f;
    --success: #39d98a;
    --bg: #0f1115;
    --bg-2: #14171d;
    --card: #1a1d24;
    --card-2: #22252d;
    --text: #f5f6f8;
    --muted: #a0a4ad;
    --border: #2a2d35;
    --on-brand: #14161a;
    --glow: rgba(255, 107, 53, .18);
    --radius: 16px;
    --font-heading: 'Oswald', 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color-scheme: dark;
}
@media (prefers-color-scheme: light) {
    :root {
        --brand: #c4501b;
        --brand-deep: #a8410f;
        --success: #15803d;
        --bg: #f7f5f2;
        --bg-2: #efebe6;
        --card: #ffffff;
        --card-2: #f3efea;
        --text: #17181c;
        --muted: #5b5f68;
        --border: #e2ddd6;
        --on-brand: #ffffff;
        --glow: rgba(196, 80, 27, .12);
        color-scheme: light;
    }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font-body); overflow-x: hidden; }
img { max-width: 100%; display: block; }
[hidden] { display: none !important; }
a { color: var(--brand); }
h1, h2, h3 { line-height: 1.15; margin: 0; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--brand); color: var(--on-brand); padding: 8px 12px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; border-radius: 6px; }

/* ---- Botones ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 12px 22px; border-radius: 12px; border: 2px solid var(--brand); background: var(--brand); color: var(--on-brand); font-weight: 700; font-size: 1rem; text-decoration: none; cursor: pointer; transition: transform .15s, box-shadow .2s, background .2s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px var(--glow); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--brand); }
.btn-sm { min-height: 38px; padding: 6px 14px; font-size: .9rem; border-radius: 10px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 12px; }
.cta-row.center { justify-content: center; }

/* ---- Encabezado ---- */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.top.scrolled { border-bottom-color: var(--border); }
.top-row { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-family: var(--font-heading); font-size: 1.3rem; font-weight: 600; letter-spacing: .02em; }
.logo img { border-radius: 8px; }
.top-nav { display: flex; gap: 22px; margin-left: 12px; }
.top-nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
.top-nav a:hover { color: var(--text); }
.top-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.lang { display: flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.lang button { background: none; border: 0; color: var(--muted); font: 600 .8rem var(--font-body); padding: 8px 9px; cursor: pointer; min-width: 36px; }
.lang button[aria-pressed="true"] { background: var(--card-2); color: var(--text); }
@media (max-width: 860px) { .top-nav { display: none; } }
@media (max-width: 420px) { .top-actions .btn { display: none; } }

/* ---- Portada ---- */
.hero { position: relative; padding: 56px 0 40px; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: -20% -10% auto auto; width: 70vw; height: 70vw; max-width: 760px; max-height: 760px; background: radial-gradient(closest-side, var(--glow), transparent); pointer-events: none; animation: float 12s ease-in-out infinite alternate; }
@keyframes float { to { transform: translate(-6%, 8%) scale(1.08); } }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; position: relative; }
.eyebrow { color: var(--brand); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: .8rem; margin: 0 0 14px; }
h1 { font-family: var(--font-heading); font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 700; letter-spacing: -.01em; }
.accent { color: var(--brand); }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 34em; margin: 20px 0 0; }
.fine { color: var(--muted); font-size: .85rem; margin: 0; max-width: 40em; }
.hero-phone { display: flex; flex-direction: column; align-items: center; gap: 16px; }
@media (max-width: 860px) {
    .hero { padding-top: 32px; }
    .hero-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ---- Teléfono ---- */
.phone { position: relative; width: min(300px, 78vw); aspect-ratio: 390 / 844; border-radius: 42px; padding: 10px; background: linear-gradient(145deg, #2b2f38, #0b0c0f); box-shadow: 0 30px 80px rgba(0,0,0,.45), inset 0 0 0 1px rgba(255,255,255,.08); }
.phone::after { content: ''; position: absolute; top: 18px; left: 50%; width: 76px; height: 20px; transform: translateX(-50%); background: #000; border-radius: 12px; }
.phone-screen { position: relative; width: 100%; height: 100%; border-radius: 33px; overflow: hidden; background: #0f1115; }
/* La captura empieza debajo de una franja de estado, así el notch no tapa el contenido. */
.shot { position: absolute; inset: 30px 0 0; width: 100%; height: calc(100% - 30px); object-fit: cover; object-position: top; opacity: 0; transform: scale(1.03); transition: opacity .6s ease, transform .8s ease; }
.shot.on { opacity: 1; transform: none; }
.dots { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.dots button { background: var(--card); color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px; font: 600 .8rem var(--font-body); cursor: pointer; position: relative; overflow: hidden; }
.dots button[aria-selected="true"] { color: var(--text); border-color: var(--brand); }
.dots button[aria-selected="true"]::after { content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: var(--brand); transform-origin: left; animation: progress var(--slide-ms, 4000ms) linear forwards; }
.dots.paused button::after { animation-play-state: paused; }
@keyframes progress { from { transform: scaleX(0); } to { transform: scaleX(1); } }

/* ---- Datos clave ---- */
.facts { border-block: 1px solid var(--border); background: var(--bg-2); }
.facts-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; padding-block: 28px; }
.fact { display: flex; flex-direction: column; gap: 4px; }
.fact b { font-family: var(--font-heading); font-size: 2.4rem; color: var(--brand); line-height: 1; }
.fact span { color: var(--muted); font-size: .95rem; }
@media (max-width: 700px) { .facts-row { grid-template-columns: repeat(2, 1fr); } }

/* ---- Secciones ---- */
section { scroll-margin-top: 72px; }
.simple-pro, .catalogs, .features, .try, .more, .privacy, .next, .faq, .final { padding: 88px 0; }
.section-title { font-family: var(--font-heading); font-size: clamp(1.9rem, 4vw, 2.8rem); font-weight: 700; }
.section-lead { color: var(--muted); font-size: 1.1rem; margin: 12px 0 0; max-width: 40em; }

/* ---- Funciones (scroll con el teléfono fijo al costado) ---- */
.story { display: grid; grid-template-columns: 1fr 340px; gap: 56px; margin-top: 40px; }
.story-steps { display: flex; flex-direction: column; }
.step { min-height: 72vh; display: flex; flex-direction: column; justify-content: center; padding: 24px 0; opacity: .35; transition: opacity .4s; }
.step.active { opacity: 1; }
.step-tag { align-self: flex-start; background: var(--glow); color: var(--brand); font-weight: 700; font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; }
.step h3 { font-family: var(--font-heading); font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 14px 0 10px; }
.step p { color: var(--muted); font-size: 1.08rem; max-width: 32em; margin: 0; }
.step-shot { display: none; }
.story-phone { position: sticky; top: calc(50vh - 300px); align-self: start; height: 620px; display: flex; align-items: center; justify-content: center; }
.story-phone .phone { width: 290px; }
@media (max-width: 860px) {
    .story { grid-template-columns: 1fr; gap: 0; }
    .story-phone { display: none; }
    .step { min-height: 0; opacity: 1; padding: 28px 0; border-top: 1px solid var(--border); }
    .step:first-child { border-top: 0; }
    .step-shot { display: block; width: min(260px, 70vw); margin: 22px auto 0; border-radius: 24px; border: 6px solid #1f2229; box-shadow: 0 20px 50px rgba(0,0,0,.35); }
}

/* ---- Demo ---- */
.try { background: var(--bg-2); border-block: 1px solid var(--border); }
.try-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 10px; }
.checks li { padding-left: 30px; position: relative; }
.checks li::before { content: '✓'; position: absolute; left: 0; top: 0; width: 22px; height: 22px; border-radius: 50%; background: var(--success); color: var(--on-brand); font-weight: 800; font-size: .8rem; display: grid; place-items: center; }
.demo { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.demo-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; }
.demo-head b { display: block; font-size: 1.1rem; }
.demo-head small { color: var(--muted); }
.flower { font-size: 2.2rem; transition: transform .5s cubic-bezier(.3, 1.6, .5, 1); }
.flower.grow { transform: scale(1.35) rotate(-8deg); }
.demo-sets { display: grid; gap: 8px; }
.demo-set { display: grid; grid-template-columns: 32px 1fr 52px; align-items: center; gap: 10px; background: var(--card-2); border: 1px solid var(--border); border-radius: 12px; padding: 6px 6px 6px 14px; font-weight: 600; transition: background .3s, border-color .3s; }
.demo-set span:first-child { color: var(--muted); }
.demo-set.done { background: color-mix(in srgb, var(--success) 18%, var(--card)); border-color: color-mix(in srgb, var(--success) 50%, transparent); }
.demo-check { width: 48px; height: 44px; border-radius: 10px; border: 1px solid var(--border); background: var(--card); color: var(--muted); font-size: 1.2rem; font-weight: 800; cursor: pointer; transition: background .2s, color .2s, transform .15s; }
.demo-check:hover { transform: scale(1.05); }
.demo-check[aria-pressed="true"] { background: var(--success); color: var(--on-brand); border-color: var(--success); }
.demo-check.pulse { animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--brand) 55%, transparent); } 50% { box-shadow: 0 0 0 8px transparent; } }
.demo-rest { display: flex; align-items: center; gap: 14px; margin-top: 14px; padding: 12px 14px; border-radius: 12px; background: var(--card-2); }
.demo-rest svg { width: 48px; height: 48px; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: var(--border); stroke-width: 4; }
.ring { fill: none; stroke: var(--brand); stroke-width: 4; stroke-linecap: round; stroke-dasharray: 119.4; stroke-dashoffset: 0; transition: stroke-dashoffset .25s linear; }
.demo-rest small { display: block; color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; }
.demo-rest b { font-family: var(--font-heading); font-size: 1.8rem; }
.demo-rest .btn { margin-left: auto; }
.demo-pr { margin-top: 14px; padding: 14px; border-radius: 12px; background: var(--glow); border: 1px solid var(--brand); display: flex; flex-wrap: wrap; align-items: center; gap: 10px; justify-content: space-between; animation: pop .5s cubic-bezier(.3, 1.6, .5, 1); }
@keyframes pop { from { transform: scale(.85); opacity: 0; } to { transform: none; opacity: 1; } }
.demo-hint { color: var(--muted); font-size: .9rem; margin: 12px 0 0; min-height: 1.6em; }
.confetti { position: fixed; top: 0; left: 0; width: 8px; height: 12px; border-radius: 2px; pointer-events: none; z-index: 60; }
@media (max-width: 860px) { .try-grid { grid-template-columns: 1fr; gap: 28px; } }

/* ---- Grilla de funciones ---- */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; transition: transform .2s, border-color .2s; }
.card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--brand) 55%, var(--border)); }
.card .ic { font-size: 1.8rem; }
.card h3 { font-size: 1.05rem; margin: 12px 0 6px; }
.card p { color: var(--muted); margin: 0; font-size: .95rem; }
@media (max-width: 960px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .grid { grid-template-columns: 1fr; } }

/* ---- Privacidad ---- */
.privacy { padding-top: 0; }
.privacy-box { display: flex; gap: 24px; align-items: flex-start; background: linear-gradient(135deg, var(--card), var(--card-2)); border: 1px solid var(--border); border-radius: 24px; padding: 36px 28px; }
.lock { font-size: 3rem; }
.privacy-box p { color: var(--muted); font-size: 1.05rem; max-width: 46em; }
@media (max-width: 600px) { .privacy-box { flex-direction: column; gap: 8px; padding: 28px 20px; } }

/* ---- Lo que viene ---- */
.next { background: var(--bg-2); border-block: 1px solid var(--border); }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; position: relative; }
.tl { background: var(--card); border: 1px solid var(--border); border-top: 3px solid var(--brand); border-radius: var(--radius); padding: 18px; }
.tl p { color: var(--muted); margin: 8px 0 0; font-size: .95rem; }
.tl .warn { color: var(--text); font-size: .85rem; border-left: 3px solid var(--brand); padding-left: 10px; }
@media (max-width: 960px) { .timeline { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .timeline { grid-template-columns: 1fr; } }

/* ---- Preguntas ---- */
details { border-bottom: 1px solid var(--border); padding: 4px 0; }
details:first-of-type { margin-top: 28px; border-top: 1px solid var(--border); }
summary { cursor: pointer; list-style: none; padding: 16px 36px 16px 0; font-weight: 600; font-size: 1.05rem; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--brand); transition: transform .25s; }
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details p { color: var(--muted); margin: 0 0 16px; }

/* ---- Cierre y pie ---- */
.final-box { text-align: center; }
.final-box h2 { font-family: var(--font-heading); font-size: clamp(2rem, 5vw, 3.2rem); }
.foot { border-top: 1px solid var(--border); padding: 28px 0 40px; color: var(--muted); font-size: .92rem; }
.foot-row { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; }
.foot nav { display: flex; gap: 18px; }
.foot a { color: var(--muted); }

/* ---- Aparición al hacer scroll (solo si el JS corre) ---- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .js .reveal { opacity: 1; transform: none; }
}

/* Chino: fuentes del sistema para los caracteres CJK (Inter y Oswald no los tienen). */
html[lang="zh"] {
    --font-heading: 'Oswald', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', 'Noto Sans CJK SC', sans-serif;
    --font-body: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* El diferencial: simple para usar, tan profesional como necesites */
.sp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.sp-grid .card:hover { transform: none; }
.sp-list { margin: 0; padding-left: 1.2em; color: var(--muted); display: grid; gap: 6px; }
.sp-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.sp-chips span { padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border); background: var(--card-2); font-size: .9rem; }
.sp-note { margin-top: 14px !important; font-size: .9rem; }
@media (max-width: 760px) { .sp-grid { grid-template-columns: 1fr; } }

/* Catálogos de ejercicios */
.cat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 32px; }
.cat-card { margin: 0; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.cat-card img { display: block; width: 100%; height: 420px; object-fit: cover; object-position: top; }
.cat-card figcaption { padding: 16px 18px 20px; display: grid; gap: 6px; }
.cat-card figcaption span { color: var(--muted); font-size: .95rem; }
@media (max-width: 760px) { .cat-grid { grid-template-columns: 1fr; } .cat-card img { height: 360px; } }

/* Para profesores y estudios, y planes */
.pros { padding: 72px 0; background: color-mix(in srgb, var(--brand) 7%, transparent); }
.pros-list { list-style: none; padding: 0; margin: 20px 0; display: grid; gap: 10px; max-width: 720px; }
.pros-list li { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px 16px; font-weight: 600; }
.plans { padding: 72px 0; }
.plans-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.plan-hl { border-color: var(--brand); box-shadow: 0 0 0 2px color-mix(in srgb, var(--brand) 35%, transparent); }