/* Nido Studio — Mantequilla · Chocolate (v4) */
:root{
  --mantequilla:#F3E3A6;
  --mantequilla-clara:#FAF0C8;
  --caramelo:#E2C27E;
  --chocolate:#4A2C1E;
  --crema:#FBF5E6;
  --linea:rgba(74,44,30,.16);
  --suave:rgba(74,44,30,.64);
  --sombra:0 24px 60px -18px rgba(74,44,30,.28), 0 6px 18px -8px rgba(74,44,30,.14);
  --sombra-suave:0 14px 40px -16px rgba(74,44,30,.22);
  --radio:26px;
  --serif:'Cormorant Garamond',serif;
  --sans:'Jost',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--mantequilla);color:var(--chocolate);font-family:var(--sans);font-weight:300;
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,video{display:block;max-width:100%}
.ancho{max-width:1100px;margin:0 auto;padding:0 22px}
.estrecho{max-width:640px;margin:0 auto;padding:0 22px}

/* ---------- Fondo con vida: manchas de luz que se mueven + grano ---------- */
.ambiente{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;
  background:linear-gradient(180deg,var(--mantequilla-clara) 0%,var(--mantequilla) 45%,#F0DB98 100%)}
.ambiente span{position:absolute;border-radius:50%;filter:blur(70px);opacity:.75;will-change:transform}
.ambiente span:nth-child(1){width:60vmax;height:60vmax;left:-20vmax;top:-18vmax;background:#FFF8DA;animation:flota 22s ease-in-out infinite alternate}
.ambiente span:nth-child(2){width:46vmax;height:46vmax;right:-16vmax;top:30vh;background:var(--caramelo);opacity:.45;animation:flota 28s ease-in-out infinite alternate-reverse}
.ambiente span:nth-child(3){width:40vmax;height:40vmax;left:10vw;bottom:-20vmax;background:#FFF3C4;animation:flota 34s ease-in-out infinite alternate}
@keyframes flota{to{transform:translate3d(8vw,6vh,0) scale(1.12)}}
.ambiente::after{content:"";position:absolute;inset:0;opacity:.09;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E")}

/* ---------- Textos ---------- */
.etiqueta{font-family:var(--sans);font-weight:400;font-size:11px;letter-spacing:.34em;text-transform:uppercase;color:var(--suave)}
.titulo{font-family:var(--serif);font-weight:300;font-size:clamp(46px,12vw,92px);line-height:.98;letter-spacing:-.015em}
.titulo em{font-style:italic;font-weight:400}
.lead{font-family:var(--serif);font-weight:400;font-size:clamp(23px,5.4vw,32px);line-height:1.3}
.cabeza{text-align:center;margin-bottom:44px}
.cabeza .titulo{margin-top:14px}

/* ---------- Botones (píldora) ---------- */
.boton{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:15px 28px;
  font-weight:400;font-size:12px;letter-spacing:.24em;text-transform:uppercase;border:1px solid var(--chocolate);
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease}
.boton:hover{transform:translateY(-2px);box-shadow:var(--sombra-suave)}
.boton.lleno{background:var(--chocolate);color:var(--mantequilla-clara)}
.boton.cristal{background:rgba(251,245,230,.55);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-color:rgba(74,44,30,.25)}
.botones{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}

/* ---------- Tarjetas ---------- */
.tarjeta{background:rgba(251,245,230,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.55);border-radius:var(--radio);box-shadow:var(--sombra)}
.redondo{border-radius:var(--radio);overflow:hidden;box-shadow:var(--sombra)}

/* ---------- Menú flotante ---------- */
.menu{position:fixed;z-index:20;top:14px;left:50%;transform:translateX(-50%);width:min(560px,calc(100% - 24px));
  display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 10px 9px 20px;border-radius:999px;
  background:rgba(251,245,230,.6);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.6);box-shadow:var(--sombra-suave)}
.menu .marca img{width:64px;height:auto}
.menu nav{display:flex;gap:2px}
.menu nav a{font-weight:400;font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;padding:9px 12px;border-radius:999px;transition:background .25s}
.menu nav a.activo{background:var(--chocolate);color:var(--mantequilla-clara)}

section{padding:96px 0}

/* ---------- Carruseles que se deslizan ---------- */
.carril{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:10px 22px 34px;scrollbar-width:none;
  -webkit-overflow-scrolling:touch}
.carril::-webkit-scrollbar{display:none}
.carril > *{scroll-snap-align:center;flex:0 0 auto}
.desliza{text-align:center;font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--suave);margin-top:-10px}

/* ---------- Cinta animada ---------- */
.cinta{overflow:hidden;padding:20px 0;border-block:1px solid var(--linea);background:rgba(74,44,30,.04)}
.cinta div{display:flex;gap:42px;width:max-content;animation:cinta 38s linear infinite}
.cinta span{font-family:var(--serif);font-style:italic;font-size:28px;white-space:nowrap}
.cinta span::after{content:"✦";font-style:normal;font-size:13px;margin-left:42px;vertical-align:middle;opacity:.55}
@keyframes cinta{to{transform:translateX(-50%)}}

/* ---------- Animaciones al bajar ---------- */
.aparece{opacity:0;transform:translateY(30px);transition:opacity 1s cubic-bezier(.2,.7,.2,1),transform 1s cubic-bezier(.2,.7,.2,1)}
.aparece.visto{opacity:1;transform:none}
.retraso-1{transition-delay:.12s}.retraso-2{transition-delay:.24s}.retraso-3{transition-delay:.36s}
@media (prefers-reduced-motion:reduce){
  .aparece{opacity:1!important;transform:none!important;transition:none!important}
  .ambiente span,.cinta div,.giro,.tira div{animation:none!important}
}

/* ---------- Botón flotante ---------- */
.flotante{position:fixed;z-index:19;right:16px;bottom:18px;display:flex;align-items:center;gap:10px;border-radius:999px;
  padding:13px 18px;background:var(--chocolate);color:var(--mantequilla-clara);box-shadow:var(--sombra);
  font-weight:400;font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  transform:translateY(120px);transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.flotante.visible{transform:none}
.flotante svg{width:17px;height:17px}

/* ---------- Pie ---------- */
footer{padding:20px 22px 110px;text-align:center}
footer .tarjeta{max-width:640px;margin:0 auto;padding:40px 24px}
footer img{width:92px;height:auto;margin:0 auto}
footer nav{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 22px;margin-top:22px}
footer nav a{font-weight:400;font-size:11px;letter-spacing:.24em;text-transform:uppercase}
footer p{margin-top:16px;font-size:13px;color:var(--suave)}

/* Aviso "mensaje copiado" */
.aviso{position:fixed;z-index:30;left:50%;bottom:86px;transform:translate(-50%,20px);opacity:0;pointer-events:none;
  background:var(--crema);color:var(--chocolate);border-radius:999px;padding:12px 20px;box-shadow:var(--sombra);
  font-size:13px;white-space:nowrap;transition:opacity .35s ease,transform .35s ease}
.aviso.visible{opacity:1;transform:translate(-50%,0)}