/* =========================================================
   FRIO-BIO · Landing
   Paleta inspirada en la presentación corporativa
   ========================================================= */
:root{
  --navy:#0B1E2D;
  --navy-2:#12334A;
  --navy-3:#1B4560;
  --cyan:#3BC4E0;
  --green:#4CC35E;
  --green-d:#3BA94D;
  --blue:#1E63A8;
  --ice:#E7F3F8;
  --ice-2:#D6EAF2;
  --white:#fff;
  --text:#0B1E2D;
  --muted:#5B7080;
  --line:#7FA3B8;
  --radius:14px;
  --shadow:0 18px 40px -18px rgba(11,30,45,.45);
  --head:'Barlow Condensed',Impact,sans-serif;
  --body:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --header-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{margin:0;font-family:var(--body);color:var(--text);background:var(--ice);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:inherit}
h1,h2,h3{margin:0;line-height:1.05}
.container{width:min(1180px,100% - 32px);margin-inline:auto}

/* ---------- Botones ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.9rem 1.5rem;border-radius:999px;font-weight:600;font-size:1rem;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .2s,background .2s,border-color .2s,color .2s;font-family:inherit}
.btn:hover{transform:translateY(-2px)}
.btn--green{background:var(--green);color:var(--navy)}
.btn--green:hover{background:#5fd371}
.btn--ghost{border-color:var(--cyan);color:var(--white)}
.btn--ghost:hover{background:rgba(59,196,224,.12)}
.btn--dark{background:var(--navy);color:var(--white)}
.btn--dark:hover{background:var(--navy-2)}
.btn--block{width:100%}
.btn:disabled{opacity:.6;cursor:wait;transform:none}

/* ---------- Header ---------- */
.header{position:fixed;inset:0 0 auto;z-index:50;height:var(--header-h);background:rgba(255,255,255,.96);backdrop-filter:blur(8px);transition:box-shadow .3s}
.header.is-scrolled{box-shadow:0 6px 24px -10px rgba(11,30,45,.35)}
.header__inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand img{height:58px;width:auto}
.nav{display:flex;align-items:center;gap:1.6rem}
.nav a{text-decoration:none;font-weight:500;font-size:.95rem;color:var(--navy);position:relative}
.nav a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--cyan);transition:width .25s}
.nav a:not(.btn):hover::after{width:100%}
.nav__cta{padding:.6rem 1.2rem}

.burger{display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;position:relative;padding:0}
.burger span{position:absolute;left:10px;right:10px;height:2.5px;background:var(--navy);border-radius:2px;transition:transform .3s,opacity .2s,top .3s}
.burger span:nth-child(1){top:14px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:28px}
.burger[aria-expanded="true"] span:nth-child(1){top:21px;transform:rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){top:21px;transform:rotate(-45deg)}

/* ---------- Tipografía de secciones ---------- */
.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin:0 0 .8rem}
.eyebrow--dark{color:var(--blue)}
.title{font-family:var(--head);font-weight:800;text-transform:uppercase;font-size:clamp(2.1rem,4.6vw,3.4rem);color:var(--white);margin-bottom:2.2rem;letter-spacing:.01em}
.title--dark{color:var(--navy)}
.lead{font-size:1.1rem;color:#263f50}

.section{padding:clamp(4rem,9vw,6.5rem) 0}
.section--dark{background:var(--navy);color:#d7e6ee}
.section--light{background:var(--ice)}
.section--light2{background:var(--white)}
.section--green{background:var(--green)}

/* ---------- Hero ---------- */
.hero{background:var(--navy);color:#d7e6ee;padding:calc(var(--header-h) + 3.5rem) 0 5rem;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;right:-10%;top:-20%;width:60%;height:140%;background:radial-gradient(closest-side,rgba(59,196,224,.18),transparent);pointer-events:none}
.hero__grid{display:grid;grid-template-columns:1.05fr 1fr;gap:3rem;align-items:center;position:relative}
.hero h1{font-family:var(--head);font-weight:800;text-transform:uppercase;color:var(--white);font-size:clamp(2.6rem,6vw,4.6rem);letter-spacing:.005em}
.hero h1 span{display:block;color:var(--cyan)}
.hero__lead{font-size:1.15rem;max-width:34rem;margin:1.4rem 0 2rem}
.hero__actions{display:flex;flex-wrap:wrap;gap:.8rem}
.hero__chips{list-style:none;padding:0;margin:2.2rem 0 0;display:flex;flex-wrap:wrap;gap:.6rem}
.hero__chips li{border:1px solid rgba(59,196,224,.5);border-radius:999px;padding:.4rem .9rem;font-size:.9rem}
.hero__chips strong{color:var(--white);margin-right:.25rem}
.hero__media{position:relative}
.hero__media img{border-radius:22px;box-shadow:var(--shadow);aspect-ratio:4/3;object-fit:cover;width:100%}
.hero__media::after{content:"";position:absolute;left:-14px;bottom:-14px;width:120px;height:6px;border-radius:6px;background:var(--green)}
.hero__badge{position:absolute;right:18px;bottom:18px;display:flex;align-items:center;gap:.7rem;background:rgba(11,30,45,.88);border:1px solid var(--cyan);padding:.7rem 1.1rem;border-radius:999px;color:var(--white)}
.hero__badge small{display:block;font-size:.7rem;color:#9fc1d1;line-height:1.1}
.hero__badge strong{font-family:var(--head);font-size:1.5rem;line-height:1}
.dot{width:12px;height:12px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(76,195,94,.7);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 12px rgba(76,195,94,0)}100%{box-shadow:0 0 0 0 rgba(76,195,94,0)}}

/* ---------- Cards servicios ---------- */
.cards{display:grid;gap:1.4rem}
.cards--3{grid-template-columns:repeat(3,1fr)}
.cards--2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--navy-2);border-radius:var(--radius);padding:1.8rem;border-top:6px solid;transition:transform .25s}
.card:hover{transform:translateY(-4px)}
.card h3{font-size:1.25rem;color:var(--white);font-weight:600}
.card .big{font-family:var(--head);font-weight:800;font-size:clamp(2.6rem,5vw,3.6rem);margin:.3rem 0 .4rem;line-height:1}
.card p{margin:0}
.card--cyan{border-color:var(--cyan)} .card--cyan .big{color:var(--cyan)}
.card--white{border-color:var(--white)} .card--white .big{color:var(--white)}
.card--green{border-color:var(--green)} .card--green .big{color:var(--green)}
.units{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;margin-top:2rem}
.units__label{font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#9fc1d1;margin-right:.4rem}
.pill{border:1.5px solid var(--cyan);border-radius:999px;padding:.5rem 1.1rem;color:var(--white)}

/* ---------- Equipamiento ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:center}
.split--center{align-items:center}
.split__photo{margin:0}
.split__photo img{border-radius:20px;box-shadow:var(--shadow);aspect-ratio:4/5;object-fit:cover;width:100%}
.checks{list-style:none;padding:0;margin:1.6rem 0 0;display:grid;gap:.7rem}
.checks li{position:relative;padding-left:2rem;font-weight:500}
.checks li::before{content:"";position:absolute;left:0;top:.2rem;width:1.25rem;height:1.25rem;border-radius:50%;background:var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%230B1E2D' stroke-width='3' d='M5 12l5 5 9-10'/%3E%3C/svg%3E") center/70% no-repeat}
.parts{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;margin-top:3.5rem}
.part{margin:0;background:var(--white);border-radius:var(--radius);overflow:hidden;border-top:5px solid var(--cyan);box-shadow:0 10px 30px -20px rgba(11,30,45,.5);transition:transform .25s}
.part:hover{transform:translateY(-4px)}
.part img{aspect-ratio:10/7;object-fit:contain;width:100%;padding:.6rem}
.part figcaption{padding:0 1.2rem 1.3rem;font-size:.9rem;color:var(--muted)}
.part figcaption strong{display:block;color:var(--navy);font-size:1rem}
.specs{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:2rem;background:var(--ice-2);border-radius:var(--radius);overflow:hidden}
.specs div{background:var(--navy);padding:1.3rem;text-align:center}
.specs span{display:block;font-family:var(--head);font-weight:800;font-size:2rem;color:var(--cyan);line-height:1}
.specs small{color:#b8d0dc}

/* ---------- Pasos ---------- */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(6,1fr);gap:1.2rem;position:relative}
.steps::before{content:"";position:absolute;top:27px;left:5%;right:5%;height:3px;background:var(--line);z-index:0}
.steps li{position:relative;z-index:1}
.steps span{display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:var(--navy);color:var(--cyan);font-weight:700;font-size:1.3rem;margin-bottom:1rem}
.steps .is-active span{background:var(--green);color:var(--navy)}
.steps h3{font-size:1.15rem;font-weight:700;margin-bottom:.3rem}
.steps p{margin:0;color:var(--muted);font-size:.95rem}

/* ---------- Tracking ---------- */
.tracking{display:grid;grid-template-columns:1fr 1fr;gap:.9rem}
.track{background:var(--navy-2);border-left:5px solid;border-radius:10px;padding:1rem 1.2rem}
.track strong{display:block;color:var(--white);font-size:1.1rem}
.track span{font-size:.9rem}
.track--cyan{border-color:var(--cyan)} .track--green{border-color:var(--green)}
.note{margin-top:1.4rem}
.chart{background:var(--navy-2);border-radius:18px;padding:1.6rem}
.chart svg{width:100%;height:240px;overflow:visible}
.chart__band{fill:#1B5A70}
.chart__lbl{fill:#9fc1d1;font-size:13px;font-family:var(--body)}
.chart__line{fill:none;stroke:var(--cyan);stroke-width:3.5;stroke-linejoin:round;stroke-dasharray:600;stroke-dashoffset:600}
.chart.is-visible .chart__line{animation:draw 2.2s ease forwards}
.chart__dot{fill:var(--green)}
.chart small{display:block;margin-top:.6rem;color:#9fc1d1}
@keyframes draw{to{stroke-dashoffset:0}}

/* ---------- Nosotros ---------- */
.mission{margin:0 0 1.6rem;background:var(--navy);color:var(--white);border-left:8px solid var(--green);border-radius:var(--radius);padding:1.8rem 2rem;font-size:clamp(1.15rem,2.2vw,1.45rem);line-height:1.45}
.card-light{background:var(--white);border-radius:var(--radius);padding:1.8rem;border-top:6px solid}
.card-light h3{font-size:1.35rem;margin-bottom:.6rem}
.card-light p{margin:0}
.card-light--cyan{border-color:var(--cyan)} .card-light--cyan h3{color:#1a9ab5}
.card-light--green{border-color:var(--green)} .card-light--green h3{color:var(--green-d)}
.cover{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;margin-top:1.4rem}
.cover__box{background:var(--navy);color:#d7e6ee;border-radius:var(--radius);padding:1.8rem}
.cover__box h3{color:var(--white);font-size:1.6rem;font-weight:600;margin-bottom:1rem;line-height:1.2}
.cover__box--light{background:var(--white);color:var(--text)}
.cover__city{font-family:var(--head);font-weight:800;font-size:4.2rem;line-height:1;margin:0 0 .4rem}
.cover__box--light p:last-child{margin:0}
.tag{display:inline-block;background:var(--green);color:var(--navy);font-weight:700;border-radius:8px;padding:.6rem 1rem}

/* ---------- Galería ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:220px;gap:1rem}
.gallery__item{overflow:hidden;border-radius:var(--radius);display:block}
.gallery__item img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.gallery__item:hover img{transform:scale(1.06)}
.gallery__item--wide{grid-column:span 2;grid-row:span 2}
.gallery__item--tall{grid-row:span 2}
.lightbox{position:fixed;inset:0;z-index:90;background:rgba(5,15,23,.92);display:grid;place-items:center;padding:20px;cursor:zoom-out}
.lightbox img{max-height:90vh;border-radius:12px}

/* ---------- Formulario ---------- */
.quote{display:grid;grid-template-columns:.85fr 1.15fr;gap:3rem;align-items:start}
.quote__intro p{font-size:1.15rem;margin-top:-1rem}
.contact{list-style:none;padding:0;margin:1.6rem 0 0;display:grid;gap:.6rem}
.contact a{font-weight:600;text-decoration:none;border-bottom:2px solid rgba(11,30,45,.3)}
.contact a:hover{border-color:var(--navy)}
.form{background:var(--white);border-radius:20px;padding:clamp(1.4rem,4vw,2.4rem);box-shadow:var(--shadow)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.row .field--sm{max-width:none}
.field{margin-bottom:1.1rem;display:flex;flex-direction:column}
.field label{font-weight:600;font-size:.9rem;margin-bottom:.4rem}
.field input,.field select,.field textarea{font:inherit;font-size:16px;color:var(--text);width:100%;padding:.8rem 1rem;border:1.5px solid #c9dbe4;border-radius:10px;background:#f7fbfd;transition:border-color .2s,box-shadow .2s;min-height:50px}
.field textarea{resize:vertical;min-height:110px}
.field select{appearance:none;background:#f7fbfd url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%230B1E2D' stroke-width='2.5' d='M6 9l6 6 6-6'/%3E%3C/svg%3E") right 1rem center/16px no-repeat;padding-right:2.6rem}
.field input[type="date"]{cursor:pointer}
.field input[type="date"]::-webkit-calendar-picker-indicator{cursor:pointer;opacity:.8;width:22px;height:22px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 4px rgba(59,196,224,.2);background:var(--white)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#d64545}
.error{color:#c13a3a;font-size:.82rem;min-height:1em;margin-top:.25rem}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form__legal{font-size:.8rem;color:var(--muted);text-align:center;margin:.8rem 0 0}
.alert{border-radius:10px;padding:.9rem 1.1rem;margin-bottom:1.2rem;font-weight:500}
.alert--ok{background:#e4f7e7;color:#1f6b2c;border:1px solid #9fd8a9}
.alert--error{background:#fde8e8;color:#9b2c2c;border:1px solid #f1b0b0}

/* ---------- Footer ---------- */
.footer{background:var(--navy);color:#9fc1d1;padding:2.5rem 0 3rem;font-size:.9rem}
.footer__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem}
.footer img{height:58px;width:auto;border-radius:8px;background:#fff;padding:4px}
.footer p{margin:0}

/* ---------- WhatsApp flotante ---------- */
.whatsapp{position:fixed;right:20px;bottom:20px;z-index:80;width:60px;height:60px;border-radius:50%;background:#25D366;display:grid;place-items:center;box-shadow:0 10px 25px -6px rgba(0,0,0,.45);transition:transform .2s}
.whatsapp::before{content:"";position:absolute;inset:0;border-radius:50%;background:#25D366;z-index:-1;animation:wa 2.4s infinite}
.whatsapp:hover{transform:scale(1.08)}
@keyframes wa{0%{transform:scale(1);opacity:.6}100%{transform:scale(1.6);opacity:0}}

/* ---------- Animación de entrada ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:1024px){
  .parts{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr);row-gap:2rem}
  .steps::before{display:none}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .gallery__item--wide{grid-column:span 2;grid-row:span 1}
  .gallery__item:last-child{grid-column:span 2}
  .gallery__item:last-child img{object-position:center 40%}
}

@media (max-width:900px){
  :root{--header-h:68px}
  .brand img{height:50px}
  .burger{display:block;z-index:60}
  .nav{position:fixed;top:var(--header-h);left:0;right:0;height:calc(100dvh - var(--header-h));background:var(--white);flex-direction:column;align-items:stretch;gap:0;padding:1rem 16px 2rem;transform:translateX(100%);visibility:hidden;transition:transform .35s ease,visibility .35s;overflow-y:auto}
  .nav.is-open{transform:none;visibility:visible}
  .nav a{padding:1.05rem .3rem;border-bottom:1px solid var(--ice-2);font-size:1.15rem}
  .nav a:not(.btn)::after{display:none}
  .nav__cta{margin-top:1.4rem;border-bottom:0 !important;justify-content:center}
  body.menu-open{overflow:hidden}

  .hero__grid,.split,.quote{grid-template-columns:1fr}
  .hero{padding-top:calc(var(--header-h) + 2.5rem)}
  .hero__media{order:-1}
  .cards--3{grid-template-columns:1fr}
  .cards--2,.cover{grid-template-columns:1fr}
  .specs{grid-template-columns:repeat(2,1fr)}
  .split__photo img{aspect-ratio:4/3}
}

@media (max-width:600px){
  .hero__actions .btn{width:100%}
  .tracking{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .row{grid-template-columns:1fr;gap:0}
  .parts{gap:.8rem}
  .part figcaption{padding:0 .8rem 1rem;font-size:.82rem}
  .gallery{grid-auto-rows:160px;gap:.6rem}
  .gallery__item--tall{grid-row:span 2}
  .specs span{font-size:1.6rem}
  .cover__city{font-size:3.4rem}
  .footer__inner{flex-direction:column;text-align:center}
  .whatsapp{width:56px;height:56px;right:16px;bottom:16px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
  .chart__line{stroke-dashoffset:0}
}