/* ============================================================
   Refrigeración Express BA — style.css compartido
   ============================================================ */
:root {
  --bg: #040d1a;
  --bg2: #071525;
  --bg3: #0a1d30;
  --accent: #0ea5e9;
  --accent2: #38bdf8;
  --orange: #2c5aa8;
  --wa: #25d366;
  --wa-dark: #128c4e;
  --text: #e2eaf4;
  --muted: #7a9ab8;
  --border: rgba(14,165,233,0.15);
  --card: rgba(10,29,48,0.8);
  --font-head: "Barlow Condensed", sans-serif;
  --font-body: "Barlow", sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);line-height:1.6;overflow-x:hidden;padding-top:72px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* UTILITY */
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.section{padding:64px 0}
.section--dark{background:var(--bg2)}
.section--alt{background:var(--bg3)}
.badge{display:inline-flex;align-items:center;gap:6px;background:rgba(14,165,233,0.12);border:1px solid rgba(14,165,233,0.3);color:var(--accent2);font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:5px 12px;border-radius:20px}

/* HEADINGS */
.section-title{font-family:var(--font-head);font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;line-height:1.1;margin-bottom:12px;letter-spacing:-.01em}
.section-sub{color:var(--muted);max-width:600px;font-size:1rem;margin-bottom:40px}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-head);font-weight:700;font-size:1.05rem;letter-spacing:.02em;padding:14px 28px;border-radius:8px;cursor:pointer;transition:all .22s ease;border:none;text-align:center;white-space:nowrap}
.btn--wa{background:var(--wa);color:#fff}
.btn--wa:hover{background:#1db954;transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,211,102,.35)}
.btn--call{background:transparent;color:var(--accent);border:2px solid var(--accent)}
.btn--call:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.btn--lg{font-size:1.1rem;padding:16px 32px}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(4,13,26,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);padding:0 20px}
.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;height:72px;gap:20px}
.nav-logo{font-family:var(--font-head);font-size:1.25rem;font-weight:800;color:#fff;white-space:nowrap;display:flex;align-items:center;gap:8px}
.nav-logo span{color:var(--accent)}
.nav-links{display:flex;gap:4px;list-style:none;margin-left:auto}
.nav-links a{padding:7px 12px;border-radius:6px;font-size:.88rem;font-weight:600;color:#e2eaf4;transition:all .18s}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.1)}
.nav-wa{background:var(--wa);color:#fff !important;padding:9px 16px;border-radius:7px;font-family:var(--font-head);font-weight:700;font-size:.9rem;transition:all .2s;white-space:nowrap}
.nav-wa:hover{background:#1db954 !important}
.nav-hamburger{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;margin-left:auto;width:44px;height:44px;background:rgba(255,255,255,.1);border:1.5px solid rgba(255,255,255,.3);border-radius:8px;transition:all .2s}
.nav-hamburger span{width:22px;height:2px;background:#fff;border-radius:2px;transition:all .3s}
.nav-hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-hamburger.active span:nth-child(2){opacity:0}
.nav-hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* BREADCRUMB */
.breadcrumb{padding:12px 0;border-bottom:1px solid var(--border);background:var(--bg2)}
.breadcrumb-inner{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--muted)}
.breadcrumb-inner a{color:var(--muted);transition:color .2s}
.breadcrumb-inner a:hover{color:var(--accent)}
.breadcrumb-inner span{color:var(--text);font-weight:500}
.bc-sep{color:var(--border);margin:0 2px}

/* HERO LANDING */
.hero-landing{padding:56px 0 48px;border-bottom:1px solid var(--border);background:var(--bg);position:relative;overflow:hidden}
.hero-landing::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 80% at 80% 50%,rgba(14,165,233,.06) 0%,transparent 70%)}
.hero-landing-inner{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:start;position:relative}
.hero-landing h1{font-family:var(--font-head);font-size:clamp(2.2rem,4.5vw,3.4rem);font-weight:900;line-height:1.0;letter-spacing:-.02em;margin-bottom:16px}
.hero-landing h1 em{font-style:normal;color:var(--accent)}
.hero-landing-sub{font-size:1.05rem;color:var(--muted);margin-bottom:28px;max-width:520px;line-height:1.7}
.hero-landing-btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.hero-trust-row{display:flex;flex-wrap:wrap;gap:14px}
.trust-chip{display:flex;align-items:center;gap:6px;font-size:.8rem;color:var(--muted);background:rgba(255,255,255,.04);border:1px solid var(--border);padding:5px 12px;border-radius:20px}
.trust-chip svg{width:14px;height:14px;color:var(--accent)}

/* CTA BOX */
.cta-box{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:28px 24px;min-width:260px;max-width:280px;flex-shrink:0}
.cta-box-title{font-family:var(--font-head);font-size:1rem;font-weight:700;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;margin-bottom:16px}
.cta-box .btn{width:100%;justify-content:center;margin-bottom:10px}
.cta-box-tel{text-align:center;margin-top:4px}
.cta-box-tel a{color:var(--accent);font-weight:600;font-size:.92rem}
.cta-box-tel a:hover{color:var(--accent2)}
.cta-box-note{text-align:center;font-size:.75rem;color:var(--muted);margin-top:10px}

/* CONTENT SECTIONS */
.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:32px}
.problem-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:22px;transition:border-color .2s}
.problem-card:hover{border-color:rgba(14,165,233,.3)}
.problem-card h3{font-family:var(--font-head);font-size:1.15rem;font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.problem-card h3 .pc-icon{font-size:1.3rem}
.problem-card p{font-size:.9rem;color:var(--muted);line-height:1.6}

/* BRANDS */
.brands-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.brand-chip{background:rgba(14,165,233,.08);border:1px solid rgba(14,165,233,.18);color:var(--accent2);font-size:.82rem;font-weight:600;padding:6px 14px;border-radius:6px}

/* BARRIOS GRID */
.barrios-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin-top:24px}
.barrio-link{display:flex;align-items:center;gap:8px;padding:10px 14px;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:8px;font-size:.88rem;color:var(--text);transition:all .2s}
.barrio-link:hover{border-color:rgba(14,165,233,.4);color:var(--accent);background:rgba(14,165,233,.06)}
.barrio-link svg{width:14px;height:14px;flex-shrink:0;color:var(--muted)}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:8px;margin-top:32px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;cursor:pointer;font-weight:600;font-size:.96rem;gap:16px;transition:background .2s}
.faq-q:hover{background:rgba(14,165,233,.05)}
.faq-icon{width:22px;height:22px;flex-shrink:0;display:flex;align-items:center;justify-content:center;border:1.5px solid var(--border);border-radius:50%;transition:all .3s;color:var(--accent)}
.faq-icon svg{width:12px;height:12px;transition:transform .3s}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 22px 18px;font-size:.9rem;color:var(--muted);line-height:1.7}
.faq-item.open .faq-icon{background:var(--accent);border-color:var(--accent);color:#fff}
.faq-item.open .faq-icon svg{transform:rotate(45deg)}
.faq-item.open .faq-a{max-height:300px}

/* CTA STRIP */
.cta-strip{background:linear-gradient(135deg,var(--bg3),var(--bg2));border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:48px 0}
.cta-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-strip h2{font-family:var(--font-head);font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;line-height:1.1}
.cta-strip h2 em{font-style:normal;color:var(--accent)}
.cta-strip p{color:var(--muted);margin-top:6px;font-size:.95rem}
.cta-strip-btns{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}

/* CROSS LINKS */
.cross-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.cross-link{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:8px;font-size:.88rem;color:var(--muted);transition:all .2s}
.cross-link:hover{border-color:rgba(14,165,233,.4);color:var(--accent);background:rgba(14,165,233,.06)}

/* FOOTER */
footer{background:var(--bg2);border-top:1px solid var(--border);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{font-size:.88rem;color:var(--muted);line-height:1.7;margin-top:12px;margin-bottom:16px;max-width:280px}
.footer-brand-name{font-family:var(--font-head);font-size:1.2rem;font-weight:800;color:#fff}
.footer-wa-btn{display:inline-flex;align-items:center;gap:7px;background:var(--wa);color:#fff;padding:9px 18px;border-radius:8px;font-weight:600;font-size:.88rem;transition:background .2s}
.footer-wa-btn:hover{background:#1db954}
.footer-col h4{font-family:var(--font-head);font-size:.85rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:7px}
.footer-col ul li a{font-size:.87rem;color:var(--muted);transition:color .2s}
.footer-col ul li a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);padding-top:20px;display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center}
.footer-bottom p{font-size:.78rem;color:#4a6377}

/* FLOATING BUTTONS */
.wa-float{position:fixed;bottom:24px;right:24px;z-index:999;display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.wa-float-btn{width:58px;height:58px;background:var(--wa);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(37,211,102,.4);transition:all .2s}
.wa-float-btn:hover{transform:scale(1.08);box-shadow:0 6px 28px rgba(37,211,102,.5)}
.wa-float-btn svg{width:30px;height:30px;fill:#fff}
.wa-float-tooltip{background:rgba(4,13,26,.9);border:1px solid var(--border);color:#fff;font-size:.8rem;font-weight:600;padding:6px 12px;border-radius:8px;white-space:nowrap;backdrop-filter:blur(8px);transition:opacity .5s}
.call-float{position:fixed;bottom:94px;right:24px;z-index:999}
.call-float-btn{width:48px;height:48px;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(14,165,233,.4);transition:all .2s}
.call-float-btn:hover{transform:scale(1.08)}
.call-float-btn svg{width:22px;height:22px;fill:#fff}

/* MOBILE NAV DRAWER */
@media(max-width:768px){
  .nav-links{display:none;position:fixed;top:72px;left:0;right:0;background:rgba(4,13,26,.98);border-bottom:1px solid var(--border);padding:16px;flex-direction:column;gap:4px;backdrop-filter:blur(12px)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 16px;font-size:1rem;border-radius:8px}
  .nav-hamburger{display:flex}
  .hero-landing-inner{grid-template-columns:1fr}
  .cta-box{max-width:100%;min-width:0}
  .content-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-strip-inner{flex-direction:column;align-items:flex-start}
  .barrios-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .hero-landing-btns{flex-direction:column}
  .btn--lg{width:100%;justify-content:center}
}

/* REVEAL ANIMATION */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .5s ease,transform .5s ease}
.reveal.visible{opacity:1;transform:none}