/* 15 y Tú · sitio público (15ytu.com) */
:root{--ink:#111;--muted:#6b7280;--bg:#fff;--line:#e5e7eb;--gold:#b08d4f;--crema:#faf8f5}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;line-height:1.6}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
a{color:inherit}
h1,h2,h3,.serif{font-family:'Fraunces',Georgia,serif;font-weight:600;letter-spacing:-.4px;line-height:1.15}
/* Nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:18px;padding:12px 22px}
.nav img{height:40px}
.nav .links{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav .links a{font-size:14px;font-weight:600;text-decoration:none;padding:8px 12px;border-radius:9px}
.nav .links a:hover{background:#f4f4f5}
.btn{display:inline-block;background:#111;color:#fff;text-decoration:none;font-weight:700;font-size:15px;padding:13px 24px;border-radius:13px;border:none;cursor:pointer}
.btn:hover{opacity:.9}
.btn.gold{background:var(--gold)}
.btn.ghost{background:#fff;color:#111;border:1.5px solid var(--line)}
/* Hero */
.hero{background:linear-gradient(180deg,var(--crema),#fff);padding:70px 0 60px;text-align:center;position:relative;overflow:hidden}
.hero h1{font-size:clamp(32px,5.5vw,54px);max-width:19ch;margin:0 auto 16px}
.hero p{font-size:18px;color:var(--muted);max-width:52ch;margin:0 auto 26px}
.hero .cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero .mini{font-size:13px;color:var(--muted);margin-top:14px}
.kicker{display:inline-block;font-size:12px;font-weight:800;letter-spacing:2.5px;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
/* Secciones */
section{padding:60px 0}
section.alt{background:var(--crema)}
.sec-h{text-align:center;margin-bottom:40px}
.sec-h h2{font-size:clamp(26px,3.6vw,38px);margin-bottom:10px}
.sec-h p{color:var(--muted);max-width:56ch;margin:0 auto}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.feat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}
.feat .ic{font-size:30px;margin-bottom:10px}
.feat h3{font-size:18px;margin-bottom:6px}
.feat p{font-size:14px;color:var(--muted)}
/* Pasos */
.pasos{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;counter-reset:paso}
.paso{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;position:relative}
.paso::before{counter-increment:paso;content:counter(paso,decimal-leading-zero);font-family:'Fraunces',Georgia,serif;font-size:38px;color:var(--gold);opacity:.5;display:block;margin-bottom:6px}
/* Precios */
.precios{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;max-width:760px;margin:0 auto}
.plan{background:#fff;border:1.5px solid var(--line);border-radius:22px;padding:30px}
.plan.destacado{border-color:#111;box-shadow:0 20px 50px -20px rgba(0,0,0,.25)}
.plan .precio{font-family:'Fraunces',Georgia,serif;font-size:44px;margin:8px 0 2px}
.plan .por{font-size:13px;color:var(--muted);margin-bottom:16px}
.plan ul{list-style:none;margin:0 0 20px}
.plan li{font-size:14px;padding:7px 0;border-bottom:1px solid #f4f4f5}
.plan li::before{content:"✓  ";color:var(--gold);font-weight:800}
/* Números y testimonios */
.numeros{display:flex;gap:40px;justify-content:center;flex-wrap:wrap;text-align:center}
.numeros .n{font-family:'Fraunces',Georgia,serif;font-size:44px;color:var(--gold)}
.numeros .l{font-size:13px;color:var(--muted)}
.testi{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;display:flex;flex-direction:column}
.testi .txt{font-size:15px;line-height:1.6}
.testi .quien{font-size:13px;color:var(--muted);margin-top:12px;font-weight:700}
.testi .stars{color:var(--gold);letter-spacing:2px;margin-bottom:8px}
/* FAQ */
.faq{max-width:720px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer;font-size:15px}
.faq p{font-size:14px;color:var(--muted);margin-top:10px}
/* CTA final */
.cta-final{background:#111;color:#fff;text-align:center;border-radius:26px;padding:60px 30px;margin:0 22px}
.cta-final h2{font-size:clamp(26px,3.6vw,38px);margin-bottom:12px}
.cta-final p{color:#a1a1aa;margin-bottom:24px}
/* Footer */
footer{border-top:1px solid var(--line);padding:36px 0;margin-top:60px}
footer .wrap{display:flex;gap:24px;flex-wrap:wrap;align-items:center;justify-content:space-between}
footer .cols{display:flex;gap:22px;flex-wrap:wrap}
footer a{font-size:13px;color:var(--muted);text-decoration:none}
footer a:hover{color:#111}
footer .small{font-size:12px;color:#9ca3af}
/* ===== v2 · Elementos visuales ===== */
/* Manchas de gradiente decorativas */
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none;z-index:0}
.hero .wrap{position:relative;z-index:1}
/* Hero de dos columnas */
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;text-align:left}
.hero-grid h1{margin:0 0 16px}
.hero-grid p{margin:0 0 26px}
@media(max-width:880px){.hero-grid{grid-template-columns:1fr;text-align:center}.hero-grid p{margin-left:auto;margin-right:auto}.hero-grid .cta-row{justify-content:center}}
/* Marco de iPhone con demo vivo */
.phone{position:relative;width:min(300px,80vw);aspect-ratio:9/19;margin:0 auto;background:#111;border-radius:44px;padding:12px;box-shadow:0 30px 80px -20px rgba(0,0,0,.45), inset 0 0 0 2px #333}
.phone::before{content:"";position:absolute;top:12px;left:50%;transform:translateX(-50%);width:38%;height:24px;background:#111;border-radius:0 0 16px 16px;z-index:3}
.phone iframe{width:100%;height:100%;border:0;border-radius:32px;background:#fff}
.phone .hint{position:absolute;bottom:-38px;left:0;right:0;text-align:center;font-size:13px;color:var(--muted);font-weight:600}
.phone-float{animation:flotar 5s ease-in-out infinite}
@keyframes flotar{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@media(prefers-reduced-motion:reduce){.phone-float{animation:none}}
/* Mockup de chat WhatsApp (CSS puro) */
.wa{background:#e5ddd5;background-image:radial-gradient(circle at 20% 30%, rgba(255,255,255,.35) 0 2px, transparent 2px);border-radius:20px;padding:18px 14px;max-width:380px;margin:0 auto;box-shadow:0 16px 40px -14px rgba(0,0,0,.3);border:1px solid #d4cabc}
.wa .burbuja{max-width:85%;padding:10px 12px;border-radius:12px;font-size:13.5px;line-height:1.45;margin-bottom:9px;position:relative;box-shadow:0 1px 1px rgba(0,0,0,.12)}
.wa .yo{background:#dcf8c6;margin-left:auto;border-top-right-radius:3px}
.wa .otro{background:#fff;margin-right:auto;border-top-left-radius:3px}
.wa .hora{display:block;font-size:10px;color:#8696a0;text-align:right;margin-top:3px}
.wa .linkcard{background:#f5f1e8;border-left:3px solid var(--gold);border-radius:8px;padding:8px 10px;margin-bottom:6px}
.wa .linkcard b{font-size:12.5px;display:block}
.wa .linkcard span{font-size:11px;color:#667}
.wa .check{color:#53bdeb}
/* Galería de diseños vivos */
.disenos-fila{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}
.diseno{position:relative;border-radius:22px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:0 14px 36px -16px rgba(0,0,0,.25);aspect-ratio:9/15.5;transition:transform .3s ease, box-shadow .3s ease}
.diseno:hover{transform:translateY(-6px);box-shadow:0 24px 50px -18px rgba(0,0,0,.35)}
.diseno iframe{width:200%;height:200%;border:0;transform:scale(.5);transform-origin:top left;pointer-events:none}
.diseno .tag{position:absolute;left:10px;bottom:10px;background:rgba(17,17,17,.85);color:#fff;font-size:12px;font-weight:700;padding:6px 12px;border-radius:999px;backdrop-filter:blur(6px);text-decoration:none}
/* Testimonios con avatar */
.testi .head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.testi .ava{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#c9a86a,#8a734a);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;flex:none}
/* Revelado al hacer scroll */
.rvl{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease}
.rvl.vis{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rvl{opacity:1;transform:none;transition:none}}
/* CTA final con sobre */
.cta-final{position:relative;overflow:hidden}
.cta-final .mini-sobre{font-size:44px;display:block;margin-bottom:8px}
/* Artículos */
.art{max-width:720px;margin:0 auto;padding:50px 22px}
.art h1{font-size:clamp(28px,4.5vw,40px);margin-bottom:12px}
.art .meta{font-size:13px;color:var(--muted);margin-bottom:28px}
.art h2{font-size:24px;margin:34px 0 12px}
.art p,.art li{font-size:16px;color:#333;margin-bottom:14px}
.art ul,.art ol{padding-left:22px;margin-bottom:14px}
.art .cta-inline{background:var(--crema);border:1px solid var(--line);border-radius:18px;padding:22px;text-align:center;margin:30px 0}
@media(max-width:640px){ .nav .links a:not(.btn){display:none} .nav .links a[href="#precios"]{display:inline-block} section{padding:44px 0} }