/* ============================================================
   CS Dental — Odontología General e Integral, Iztapalapa
   Rediseño one page · HTML/CSS/JS (GSAP + ScrollTrigger)
   Paleta original: azules #00A2FF→#0763E4, grafito #191A28→#454555
   ============================================================ */

:root{
  --blue-1:#00a2ff;
  --blue-2:#0093fa;
  --blue-3:#0084f4;
  --blue-4:#0074ed;
  --blue-5:#0763e4;
  --ink-1:#191a28;
  --ink-2:#232433;
  --ink-3:#2e2f3e;
  --ink-4:#393a49;
  --ink-5:#454555;
  --white:#ffffff;
  --paper:#f4f7fb;
  --line:#dde5ef;
  --grey:#5a6172;
  --alert:#de2f36;
  --grad-blue:linear-gradient(135deg,var(--blue-1),var(--blue-5));
  --grad-ink:linear-gradient(180deg,var(--ink-5),var(--ink-1));
  --title:"Poppins",sans-serif;
  --text:"Open Sans",sans-serif;
  --r:18px;
  --shadow:0 24px 60px -24px rgba(25,26,40,.35);
  --nav-h:68px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--text);
  color:var(--ink-1);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--title);margin:0;line-height:1.02;letter-spacing:-.02em}
p{margin:0 0 1rem;line-height:1.7;color:var(--grey);font-size:1.02rem}
.wrap{width:min(1240px,92vw);margin-inline:auto}

/* ---------- Fondo animado flotante ---------- */
.fx-bg{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.35}
.blob-1{width:46vw;height:46vw;left:-12vw;top:-8vw;background:radial-gradient(circle,#8ed6ff,transparent 65%);animation:drift 22s ease-in-out infinite}
.blob-2{width:38vw;height:38vw;right:-10vw;top:38%;background:radial-gradient(circle,#b6c8ff,transparent 65%);animation:drift 28s ease-in-out infinite reverse}
.blob-3{width:34vw;height:34vw;left:22%;bottom:-12vw;background:radial-gradient(circle,#d7ecff,transparent 65%);animation:drift 33s ease-in-out infinite}
@keyframes drift{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(4vw,-4vh,0) scale(1.12)}}
.float-icons{position:absolute;inset:0}
.fi{position:absolute;width:clamp(26px,3.2vw,58px);fill:var(--blue-4);opacity:.13;will-change:transform}
.fi:nth-child(1){left:6%;top:16%}
.fi:nth-child(2){left:82%;top:10%}
.fi:nth-child(3){left:14%;top:58%}
.fi:nth-child(4){left:68%;top:44%}
.fi:nth-child(5){left:44%;top:78%}
.fi:nth-child(6){left:90%;top:70%}
.fi:nth-child(7){left:30%;top:32%}
.fi:nth-child(8){left:56%;top:12%}
main,.topbar,.nav,.foot{position:relative;z-index:1}

/* ---------- Topbar ---------- */
.topbar{background:var(--ink-1);color:#e8edf6;font-size:.8rem}
.topbar__in{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap;min-height:38px;padding-block:.35rem}
.topbar__sep{opacity:.4}
.topbar__mail{margin-left:auto;color:#9fd3ff;font-weight:600}
.topbar__mail:hover{color:#fff}

/* ---------- Nav (siempre máximo contraste) ---------- */
.nav{position:sticky;top:0;z-index:60;background:var(--ink-1);color:#fff;border-bottom:1px solid rgba(255,255,255,.1)}
.nav.is-stuck{box-shadow:0 10px 30px -12px rgba(0,0,0,.55)}
.nav__in{display:flex;align-items:center;gap:1rem;min-height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:.65rem;color:#fff;font-family:var(--title);font-weight:700}
.brand__mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--grad-blue);color:#fff;font-weight:800;letter-spacing:-.03em}
.brand__txt{display:flex;flex-direction:column;line-height:1.15;font-size:1.02rem}
.brand__txt small{font-family:var(--text);font-weight:400;font-size:.68rem;color:#b9c6da;letter-spacing:.02em}
.nav__links{margin-left:auto;display:flex;align-items:center;gap:1.15rem}
.nav__links a{color:#fff;font-size:.9rem;font-weight:600;position:relative;padding:.35rem 0}
.nav__links a:not(.nav__cta)::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--blue-1);transition:width .3s}
.nav__links a:not(.nav__cta):hover::after,.nav__links a.active::after{width:100%}
.nav__cta{padding:.7rem 1.1rem !important}
.burger{display:none;margin-left:auto;background:none;border:0;padding:.5rem;cursor:pointer}
.burger span{display:block;width:26px;height:2px;background:#fff;margin:5px 0;transition:.3s}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Botones ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--title);font-weight:600;font-size:.92rem;padding:1rem 1.5rem;border-radius:999px;border:2px solid transparent;transition:transform .25s,box-shadow .25s,background .25s,color .25s;text-align:center}
.btn:hover{transform:translateY(-3px)}
.btn--wa{background:var(--grad-blue);color:#fff;box-shadow:0 14px 30px -14px rgba(7,99,228,.75)}
.btn--ghost{border-color:#fff;color:#fff;background:rgba(25,26,40,.45);backdrop-filter:blur(6px)}
.btn--ghost:hover{background:#fff;color:var(--ink-1)}
.btn--dark{background:var(--ink-1);color:#fff}
.btn--dark:hover{background:var(--blue-5)}
.btn--light{background:#fff;color:var(--ink-1)}

/* ---------- Tipografía gigante ---------- */
.giant{font-size:clamp(2.6rem,9.4vw,8.4rem);font-weight:800;line-height:.94;text-transform:none}
.giant--mid{font-size:clamp(2.1rem,6vw,5rem)}
.giant--light{color:#fff}
.giant__line{display:block;overflow:hidden}
.giant__line.small{font-size:.42em;font-weight:600;letter-spacing:-.01em;opacity:.95}
.giant .w{display:inline-block;will-change:transform}
.giant .accent{background:var(--grad-blue);-webkit-background-clip:text;background-clip:text;color:transparent}
.big{font-size:clamp(1.9rem,4.2vw,3.4rem);font-weight:700;margin-bottom:1.2rem}
.big--light{color:#fff}
.kicker{font-family:var(--title);font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:.76rem;color:var(--blue-5);margin:0 0 .9rem}
.kicker--light{color:#7fd0ff}
.char{display:inline-block;will-change:transform,opacity}

/* ---------- Secciones ---------- */
.sec{padding:clamp(4.5rem,10vw,9rem) 0;position:relative}
.sec--dark{background:var(--ink-1);color:#fff;overflow:hidden}
.sec--dark p{color:#c4cddd}
.grid-2{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(2rem,5vw,5rem);align-items:center}

/* ---------- Hero sticky (marco interior -> full bleed) ---------- */
.hero{height:230vh;position:relative}
.hero__sticky{position:sticky;top:0;height:100vh;display:grid;place-items:center;overflow:hidden}
.hero__frame{position:relative;width:78vw;height:74vh;border-radius:32px;overflow:hidden;box-shadow:var(--shadow);will-change:width,height,border-radius}
.hero__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(25,26,40,.78),rgba(25,26,40,.55) 45%,rgba(7,99,228,.72))}
.hero__content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;gap:1rem;padding:clamp(1.5rem,5vw,5rem);color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.45)}
.hero__eyebrow{font-family:var(--title);font-weight:700;letter-spacing:.16em;text-transform:uppercase;font-size:.74rem;color:#bfe6ff;margin:0}
.hero__lead{color:#eaf3ff;font-size:clamp(1rem,1.5vw,1.2rem);max-width:60ch;margin:.4rem 0 0}
.hero__btns{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1rem}
.hero__scroll{position:absolute;left:50%;bottom:1.4rem;transform:translateX(-50%);z-index:2;color:#fff;font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;display:flex;align-items:center;gap:.6rem}
.hero__scroll span{display:block;width:1px;height:32px;background:#fff;animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.2;transform:scaleY(.5)}50%{opacity:1;transform:scaleY(1)}}

/* ---------- Fotos con reveal / parallax ---------- */
.ph{margin:0;position:relative;overflow:hidden;border-radius:var(--r);box-shadow:var(--shadow)}
.ph img{width:100%;height:100%;object-fit:cover;transform:scale(1.14);will-change:transform}
.ph figcaption{position:absolute;left:0;bottom:0;width:100%;padding:1.5rem 1.2rem .9rem;font-family:var(--title);font-weight:600;color:#fff;font-size:.95rem;background:linear-gradient(transparent,rgba(25,26,40,.85))}

/* ---------- Nosotros ---------- */
.nosotros__media{position:relative;padding-bottom:4rem}
.ph--tall{aspect-ratio:4/3.2}
.ph--float{position:absolute;right:-6%;bottom:0;width:52%;aspect-ratio:4/3;border:6px solid #fff}
.stat{position:absolute;left:-4%;bottom:22%;background:var(--grad-blue);color:#fff;border-radius:16px;padding:1rem 1.2rem;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.stat strong{font-family:var(--title);font-size:2rem;line-height:1}
.stat span{font-size:.74rem;max-width:12ch;color:#eaf6ff}
.ticks{list-style:none;padding:0;margin:0 0 1.6rem;display:grid;gap:.6rem}
.ticks li{position:relative;padding-left:1.9rem;color:var(--ink-3);font-weight:600;font-size:.98rem}
.ticks li::before{content:"";position:absolute;left:0;top:.28em;width:1.1rem;height:1.1rem;border-radius:50%;background:var(--grad-blue)}

/* ---------- Servicios (chips + mosaico) ---------- */
.chips{display:flex;flex-wrap:wrap;gap:.55rem;margin:2rem 0 3rem}
.chips span{border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:.6rem 1.05rem;font-size:.86rem;font-weight:600;color:#fff;background:rgba(255,255,255,.04)}
.mosaic{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:170px;gap:1rem}
.mosaic__a{grid-column:span 2;grid-row:span 2}
.mosaic__b{grid-column:span 2;grid-row:span 1}
.mosaic__c{grid-column:span 1;grid-row:span 1}
.mosaic__d{grid-column:span 1;grid-row:span 1}

/* ---------- Imagen que se expande ---------- */
.expand{height:210vh;background:var(--paper)}
.expand__sticky{position:sticky;top:0;height:100vh;display:grid;place-items:center;overflow:hidden}
.expand__box{position:relative;width:46vw;height:52vh;border-radius:28px;overflow:hidden;box-shadow:var(--shadow);will-change:width,height,border-radius}
.expand__box img{width:100%;height:100%;object-fit:cover}
.expand__veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(25,26,40,.15),rgba(25,26,40,.72))}
.expand__txt{position:absolute;left:50%;bottom:8%;transform:translateX(-50%);width:min(900px,84%);text-align:center;color:#fff;font-family:var(--title);font-weight:600;font-size:clamp(1.05rem,2.4vw,2rem);line-height:1.25;margin:0;text-shadow:0 2px 18px rgba(0,0,0,.5)}

/* ---------- Cards especialidades ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:2.4rem}
.card{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 18px 44px -30px rgba(25,26,40,.4);transition:transform .35s,box-shadow .35s}
.card:hover{transform:translateY(-8px);box-shadow:0 30px 60px -28px rgba(7,99,228,.5)}
.card__img{aspect-ratio:4/3;border-radius:0;box-shadow:none}
.card__body{padding:1.4rem 1.4rem 1.6rem}
.tag{display:inline-block;font-family:var(--title);font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--blue-5);background:#eaf4ff;border-radius:999px;padding:.35rem .7rem;margin-bottom:.8rem}
.card h3{font-size:1.35rem;margin-bottom:.6rem}
.card p{font-size:.95rem}
.link{font-family:var(--title);font-weight:700;font-size:.88rem;color:var(--blue-5);border-bottom:2px solid var(--blue-1);padding-bottom:2px}
.link:hover{color:var(--ink-1)}

/* ---------- Splits ---------- */
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(1.5rem,4vw,4rem);align-items:center;margin-top:clamp(3rem,6vw,5.5rem)}
.split--rev .ph{order:2}
.split .ph{aspect-ratio:4/3}
.split__txt h3{font-size:clamp(1.6rem,3vw,2.4rem);margin-bottom:.8rem}

/* ---------- Beneficios ---------- */
.beneficios{isolation:isolate}
.benef__bg{position:absolute;inset:-15% 0;background-size:cover;background-position:center;opacity:.16;will-change:transform;z-index:-1}
.benef__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;margin-top:2.6rem}
.benef__grid article{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:1.6rem 1.4rem;backdrop-filter:blur(6px)}
.benef__grid span{font-family:var(--title);font-weight:800;font-size:2rem;background:var(--grad-blue);-webkit-background-clip:text;background-clip:text;color:transparent}
.benef__grid h3{color:#fff;font-size:1.2rem;margin:.4rem 0 .6rem}
.benef__grid p{font-size:.92rem;margin:0}

/* ---------- Opiniones ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:2.4rem}
.quotes blockquote{margin:0;background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:1.8rem}
.quotes p{color:var(--ink-2);font-size:1.02rem;font-style:italic}
.quotes footer{display:grid;grid-template-columns:auto 1fr;gap:.2rem .8rem;align-items:center}
.quotes .av{grid-row:span 2;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--grad-blue);color:#fff;font-family:var(--title);font-weight:700}
.quotes b{font-family:var(--title)}
.quotes small{color:var(--grey);font-size:.78rem}

/* ---------- FAQ ---------- */
.faq{background:var(--paper)}
.faq__in{align-items:start}
.faq__img{margin-top:1.6rem;aspect-ratio:16/10}
.acc details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:1.1rem 1.3rem;margin-bottom:.8rem}
.acc summary{cursor:pointer;font-family:var(--title);font-weight:600;font-size:1.03rem;color:var(--ink-1);list-style:none;display:flex;justify-content:space-between;gap:1rem}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";color:var(--blue-5);font-weight:700;font-size:1.4rem;line-height:1}
.acc details[open] summary::after{content:"–"}
.acc details p{margin:.8rem 0 0;font-size:.96rem}

/* ---------- CTA ---------- */
.cta{background:var(--ink-1);color:#fff;overflow:hidden;isolation:isolate;text-align:center}
.cta__bg{position:absolute;inset:-15% 0;background-size:cover;background-position:center 30%;opacity:.22;will-change:transform;z-index:-1}
.cta__in{position:relative}
.cta__btns{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap;margin:2rem 0 3rem}
.cta__info{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;text-align:left;border-top:1px solid rgba(255,255,255,.16);padding-top:2rem}
.cta__info b{display:block;font-family:var(--title);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:#7fd0ff;margin-bottom:.35rem}
.cta__info a,.cta__info span{color:#fff;font-size:.98rem}
.cta__info a:hover{color:#7fd0ff}

/* ---------- Footer ---------- */
.foot{background:var(--ink-2);color:#fff;padding-top:clamp(3rem,6vw,5rem)}
.foot__in{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:2.4rem}
.foot h4{font-size:1.05rem;margin-bottom:1rem}
.foot p{color:#c4cddd;font-size:.94rem}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:.6rem;color:#c4cddd;font-size:.92rem}
.foot a:hover{color:#7fd0ff}
.foot__soc{display:flex;gap:1rem;font-weight:600;font-size:.88rem;color:#7fd0ff}
.brand--foot{margin-bottom:1rem}
.foot__bottom{margin-top:3rem;border-top:1px solid rgba(255,255,255,.14);padding:1.2rem 0;font-size:.82rem;color:#aab6c9}
.foot__bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;width:min(1240px,92vw);margin-inline:auto}
.foot__legal{display:flex;gap:1rem;flex-wrap:wrap}

/* ---------- WhatsApp flotante ---------- */
.wa-fab{position:fixed;right:16px;bottom:16px;z-index:70;width:60px;height:60px;border-radius:50%;display:grid;place-items:center;background:var(--grad-blue);box-shadow:0 16px 34px -14px rgba(7,99,228,.9);border:2px solid #fff}
.wa-fab svg{width:32px;fill:#fff}
.wa-fab:hover{transform:scale(1.06)}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .nav__links{position:fixed;inset:calc(var(--nav-h) + 38px) 0 auto 0;background:var(--ink-1);flex-direction:column;align-items:flex-start;gap:0;padding:1rem 6vw 1.6rem;transform:translateY(-140%);transition:transform .4s ease;box-shadow:0 24px 40px -20px rgba(0,0,0,.6)}
  .nav__links.is-open{transform:translateY(0)}
  .nav__links a{width:100%;padding:.9rem 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:1rem}
  .nav__cta{margin-top:1rem;width:100%}
  .burger{display:block}
  .grid-2,.cards,.quotes,.benef__grid,.foot__in,.split,.split--rev{grid-template-columns:1fr}
  .split--rev .ph{order:0}
  .cta__info{grid-template-columns:repeat(2,1fr)}
  .mosaic{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px}
  .mosaic__a{grid-column:span 2}
  .mosaic__b{grid-column:span 2}
  .hero__frame{width:88vw;height:76vh}
  .expand__box{width:80vw;height:46vh}
  .nosotros__media{padding-bottom:5rem}
}
@media (max-width:640px){
  .topbar__in{font-size:.72rem}
  .topbar__mail{margin-left:0}
  .hero{height:200vh}
  .hero__frame{width:94vw;height:80vh;border-radius:24px}
  .ph--float{position:relative;right:0;width:100%;margin-top:1rem}
  .stat{position:relative;left:0;bottom:0;margin-top:1rem;flex-direction:row;align-items:center;gap:.8rem}
  .stat span{max-width:none}
  .nosotros__media{padding-bottom:0}
  .cta__info{grid-template-columns:1fr}
  .foot__bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .ph img{transform:none}
}