/* ===== BTClima Landing — estilos (mobile-first) ===== */
:root{
  --navy:#0C2E4E; --blue:#1E73B8; --cyan:#46A6E0;
  --ink:#16242F; --muted:#5b6b78; --line:#e3e8ee;
  --bg:#ffffff; --bg-alt:#f4f8fb; --white:#fff;
  --wa:#25D366;
  --radius:12px; --maxw:1180px;
  --shadow:0 6px 24px rgba(12,46,78,.10);
  --font:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.55;font-size:16px}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{line-height:1.2;color:var(--navy);margin:0 0 .5em}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 18px}
.section{padding:48px 0}
.section-alt{background:var(--bg-alt)}
.section-title{font-size:clamp(1.5rem,4vw,2.1rem);text-align:center;margin-bottom:1.2em}
.accent{color:var(--blue)}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:1000}
.skip-link:focus{left:8px;top:8px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-weight:700;font-size:1rem;padding:.8em 1.4em;border-radius:var(--radius);
  border:2px solid transparent;cursor:pointer;transition:.15s;text-align:center;line-height:1}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
/* Foco visible para navegación por teclado (accesibilidad) */
.btn:focus-visible,a:focus-visible,summary:focus-visible,.nav-toggle:focus-visible{outline:3px solid #46A6E0;outline-offset:2px;border-radius:8px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#175d97}
.btn-outline{background:transparent;color:var(--navy);border-color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-whatsapp{background:var(--wa);color:#fff}
.btn-whatsapp:hover{background:#1da851}
.btn-lg{padding:1em 1.6em;font-size:1.05rem}
.btn-sm{padding:.5em .9em;font-size:.9rem}
.btn-block{display:flex;width:100%}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.brand-logo{height:42px;width:auto}
.nav-toggle{display:inline-flex;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.nav-toggle span{width:26px;height:3px;background:var(--navy);border-radius:2px;transition:.2s}
.nav-menu{list-style:none;margin:0;padding:0;display:none;position:absolute;top:64px;left:0;right:0;
  background:#fff;border-bottom:1px solid var(--line);flex-direction:column;box-shadow:var(--shadow)}
.nav-menu.open{display:flex}
.nav-menu li{border-top:1px solid var(--line)}
.nav-menu a{display:block;padding:14px 18px;color:var(--navy);font-weight:600}
.nav-menu .btn{margin:10px 18px}

/* Hero */
.hero{background:linear-gradient(160deg,#0C2E4E 0%,#15436b 100%);color:#fff;padding:40px 0 48px}
.hero h1{color:#fff;font-size:clamp(1.7rem,6vw,2.8rem)}
.hero .lead{color:#dceaf6;font-size:clamp(1rem,2.5vw,1.2rem);margin-bottom:1.4em}
.hero .accent{color:var(--cyan)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:1.2em}
.hero-trust{list-style:none;display:flex;flex-wrap:wrap;gap:8px 18px;padding:0;margin:0;color:#bfd6ea;font-size:.92rem}
.hero-head{max-width:840px}
.hero-main{display:grid;grid-template-columns:1fr;gap:20px;margin-top:26px}
.hero-form-wrap{margin-top:0}
.hero-photo{border-radius:16px;overflow:hidden;box-shadow:0 16px 40px rgba(0,0,0,.32)}
.hero-photo img{display:block;width:100%;height:100%;object-fit:cover;min-height:260px}

/* Forms */
.lead-form{background:#fff;color:var(--ink);border-radius:16px;padding:20px;box-shadow:var(--shadow)}
.form-title{font-size:1.3rem;text-align:center;margin-bottom:.6em}
.field{margin-bottom:12px;display:flex;flex-direction:column}
.field label{font-size:.85rem;font-weight:600;color:var(--navy);margin-bottom:4px}
.field input,.field select,.field textarea{
  font:inherit;padding:.7em .8em;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid #bfe0fb;border-color:var(--blue)}
.form-note,.form-status{font-size:.85rem;color:var(--muted);text-align:center;margin:.6em 0 0}
.form-status.ok{color:#1a7f37;font-weight:700}
.form-status.err{color:#c0392b;font-weight:700}
.hp{position:absolute;left:-9999px}

/* Trustbar */
.trustbar{background:var(--navy);color:#fff;padding:22px 0}
.trust-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 10px;text-align:center}
.trust-grid strong{display:block;font-size:1.3rem;color:var(--cyan)}
.trust-grid span{font-size:.85rem;color:#cfe0ee}

/* Cards */
.cards{display:grid;grid-template-columns:1fr;gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{color:var(--blue)}
.review{background:#fff;border:1px solid var(--line);border-left:4px solid var(--cyan);border-radius:var(--radius);padding:20px;margin:0}
.review cite{display:block;margin-top:10px;color:var(--muted);font-style:normal;font-weight:600}

/* ¿Por qué elegirnos? */
.why-grid{display:grid;grid-template-columns:1fr;gap:18px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:6px}
.why-ico{width:50px;height:50px;border-radius:14px;background:#e8f2fb;color:var(--blue);display:grid;place-items:center;margin-bottom:6px}
.why-ico svg{width:28px;height:28px}
.why-card h3{margin:0;font-size:1.08rem;color:var(--navy)}
.why-card p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.45}
@media(min-width:600px){.why-grid{grid-template-columns:repeat(3,1fr)}}

/* Servicio principal + Precios */
.card--primary{border-color:var(--blue);border-width:2px}
.servicio-unico{max-width:640px;margin:0 auto}
.servicio-grid{display:grid;grid-template-columns:1fr;gap:24px;max-width:960px;margin:0 auto;align-items:center}
.servicio-img{width:100%;height:auto;border-radius:16px;box-shadow:var(--shadow)}
@media(min-width:760px){.servicio-grid{grid-template-columns:1.05fr .95fr}}
.section-photo{max-width:860px;margin:0 auto 34px;border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.section-photo img{display:block;width:100%;height:auto}
/* Precios dentro del Hero (columna derecha): tarjetas apiladas */
.hero-prices .price-grid{grid-template-columns:1fr;max-width:none;gap:14px;margin:0}
.hero-prices .price-note{color:#cfe0ee;font-size:.85rem;margin:12px 0 0;text-align:center}
/* Checklist "Qué incluye tu mantención" */
.incluye-list{list-style:none;max-width:760px;margin:0 auto;padding:0;display:grid;grid-template-columns:1fr;gap:14px}
.incluye-list li{position:relative;padding:15px 18px 15px 50px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);font-weight:600;color:var(--navy)}
.incluye-list li::before{content:"✓";position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--blue);font-weight:800;font-size:1.1rem}
@media(min-width:600px){.incluye-list{grid-template-columns:1fr 1fr}}
.card--primary h3::after{content:" · principal";font-size:.7rem;color:var(--cyan);font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.section-precios{background:#e8f2fb}
.price-grid{display:grid;grid-template-columns:1fr;gap:18px;max-width:760px;margin:0 auto}
.price-card{background:#fff;border:1.5px solid var(--line);border-radius:16px;padding:28px 24px;text-align:center;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:4px}
.price-card--featured{border-color:var(--blue);border-width:2px}
.price-badge{align-self:center;background:var(--blue);color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.5px;padding:3px 10px;border-radius:999px;margin-bottom:6px;text-transform:uppercase}
.price-card h3{margin:0;color:var(--navy);font-size:1.15rem}
.price-amount{margin:.1em 0 0;font-size:2.3rem;font-weight:800;color:var(--blue);line-height:1}
.price-amount span{font-size:1rem;font-weight:600;color:var(--muted)}
.price-per{margin:0 0 .8em;color:var(--muted)}
.price-card .btn{margin-top:auto}
.price-note{text-align:center;color:var(--muted);font-size:.9rem;margin:1.2em auto 0;max-width:620px}
@media(min-width:600px){.price-grid{grid-template-columns:repeat(2,1fr)}}

/* Steps */
.steps{list-style:none;counter-reset:s;padding:0;margin:0;display:grid;gap:18px}
.steps li{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 20px 64px;position:relative}
.step-n{position:absolute;left:18px;top:18px;width:34px;height:34px;border-radius:50%;
  background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800}

/* Cobertura / FAQ */
.cobertura-text{text-align:center;font-size:1.1rem;max-width:760px;margin:0 auto}
.cobertura-hint{text-align:center;color:var(--muted);margin:-.6em 0 1.4em}
.comunas-grid{display:grid;grid-template-columns:1fr;gap:14px;max-width:960px;margin:0 auto}
.comuna-card{position:relative;display:flex;align-items:center;gap:14px;text-align:left;font:inherit;background:#fff;border:1px solid #e6ebf2;border-radius:16px;padding:18px;cursor:pointer;box-shadow:0 4px 14px rgba(16,24,40,.06);transition:border-color .2s,box-shadow .2s,transform .2s}
.comuna-card:hover{border-color:#bcd6ef;box-shadow:0 12px 26px rgba(16,24,40,.13);transform:translateY(-3px)}
.comuna-ic{flex:none;width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:#e8f1fb;color:var(--blue);transition:.2s}
.comuna-ic svg{width:24px;height:24px}
.comuna-info{display:flex;flex-direction:column;gap:2px;min-width:0}
.comuna-name{font-size:1.05rem;font-weight:700;color:var(--navy);line-height:1.2}
.comuna-desc{font-size:.82rem;color:#7c8a99;line-height:1.25}
.comuna-mark{flex:none;margin-left:auto;width:24px;height:24px;border-radius:50%;border:2px solid #e1e8f0;display:grid;place-items:center;color:transparent;transition:.2s}
.comuna-mark svg{width:13px;height:13px}
.comuna-card.selected{border-color:var(--blue);box-shadow:0 12px 28px rgba(30,115,184,.22)}
.comuna-card.selected .comuna-ic{background:var(--blue);color:#fff}
.comuna-card.selected .comuna-mark{border-color:var(--blue);background:var(--blue);color:#fff}
.comuna-card:focus-visible{outline:3px solid #bfe0fb;outline-offset:2px}
@media(min-width:600px){.comunas-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.comunas-grid{grid-template-columns:repeat(3,1fr)}}
.faq{max-width:760px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;margin-bottom:12px}
.faq summary{font-weight:700;color:var(--navy);cursor:pointer}
.faq p{margin:.6em 0 0;color:var(--muted)}

/* CTA final */
.cta-final{background:var(--bg-alt)}
.cta-sub{text-align:center;color:var(--muted);margin-top:-.6em;margin-bottom:1.6em}
.contact-grid{display:grid;grid-template-columns:1fr;gap:22px}
.contact-direct{background:var(--navy);color:#fff;border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:12px}
.contact-direct h3{color:#fff}
.contact-direct .btn-outline{color:#fff;border-color:#fff}
.contact-direct .btn-outline:hover{background:#fff;color:var(--navy)}
.contact-hours{color:#cfe0ee;font-size:.9rem;margin:0}

/* Footer */
.site-footer{background:#08243d;color:#cfe0ee;padding:36px 0 18px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:24px}
.site-footer h4{color:#fff}
.site-footer a{color:var(--cyan)}
.footer-bottom{border-top:1px solid #1c4361;margin-top:22px;padding-top:14px}

/* Floating buttons */
.floating{position:fixed;right:14px;bottom:14px;display:flex;flex-direction:column;gap:12px;z-index:90}
.fab{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;
  font-size:1.5rem;box-shadow:0 6px 18px rgba(0,0,0,.28)}
.fab:hover{text-decoration:none;transform:scale(1.05)}
.fab-wa{background:var(--wa)}
.fab-call{background:var(--blue)}

/* Consent */
.consent{position:fixed;left:0;right:0;bottom:0;background:#0C2E4E;color:#fff;z-index:200;
  padding:14px 18px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:center;box-shadow:0 -4px 18px rgba(0,0,0,.2)}
/* El atributo hidden debe ganarle a display:flex (si no, el banner no se cierra) */
.consent[hidden]{display:none}
.consent p{margin:0;font-size:.92rem}
.consent a{color:var(--cyan)}
.consent-actions{display:flex;gap:10px}
.consent .btn-outline{color:#fff;border-color:#fff}
.consent .btn-outline:hover{background:#fff;color:var(--navy)}

/* ===== Responsive ===== */
@media (min-width:600px){
  .trust-grid{grid-template-columns:repeat(4,1fr)}
  .cards{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:2fr 1fr 1fr}
}
@media (min-width:900px){
  .nav-toggle{display:none}
  .nav-menu{display:flex;position:static;flex-direction:row;align-items:center;gap:6px;border:0;box-shadow:none;background:none}
  .nav-menu li{border:0}
  .nav-menu a{padding:8px 12px}
  .nav-menu .btn{margin:0 0 0 8px}
  .hero-main{grid-template-columns:1.08fr .92fr;gap:30px;align-items:stretch}
  .hero{padding:64px 0}
  .section{padding:64px 0}
  .contact-grid{grid-template-columns:1.2fr .8fr;align-items:start}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto;transition:none!important}
}