/* MCC Ingeniería – Sitio público */
:root{--acc:#F28C28;--acc2:#d9731a;--ink:#14161b;--ink2:#1d2028;--tx:#1b1e24;--mut:#626b78;--line:#e6e8ec;--soft:#f5f6f8;--r:16px;--sh:0 10px 30px rgba(20,22,27,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font-family:Inter,"Segoe UI",system-ui,Arial,sans-serif;color:var(--tx);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{color:inherit}h1,h2,h3{line-height:1.15;margin:0;letter-spacing:-.02em}p{margin:0}
.wrap{width:min(1180px,100% - 40px);margin-inline:auto}
svg{fill:currentColor}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:11px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:.2s;font-family:inherit;white-space:nowrap}
.btn svg{width:18px;height:18px}
.btn-pri{background:var(--acc);color:#fff;box-shadow:0 8px 22px rgba(242,140,40,.32)}.btn-pri:hover{background:var(--acc2);transform:translateY(-1px)}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.28)}.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-line{color:#fff;border-color:rgba(255,255,255,.25)}.btn-line:hover{border-color:var(--acc);color:var(--acc)}
.btn-lg{padding:14px 26px;font-size:16px}.btn:disabled{opacity:.7;cursor:default}

/* Navegación */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:.25s;background:transparent}
.nav.scrolled{background:rgba(20,22,27,.92);backdrop-filter:blur(10px);box-shadow:0 6px 24px rgba(0,0,0,.18)}
.nav-in{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.brand-ic{width:40px;height:40px;border-radius:11px;background:var(--acc);display:grid;place-items:center}.brand-ic svg{width:24px;height:24px;fill:#fff}
.brand-tx{display:flex;flex-direction:column;line-height:1}.brand-tx b{font-size:19px;letter-spacing:.06em}.brand-tx small{font-size:11.5px;opacity:.7;margin-top:3px}
.menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.menu a{color:rgba(255,255,255,.85);text-decoration:none;font-weight:500;font-size:14.5px;padding:8px 12px;border-radius:9px}
.menu a:hover{color:#fff;background:rgba(255,255,255,.07)}
.menu .menu-cta{color:#fff;margin-left:8px;padding:9px 16px}.menu .menu-cta:hover{background:var(--acc2)}
.acceso{padding:9px 14px;font-size:14px}
.burger{display:none;background:none;border:0;width:42px;height:42px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:9px}
.burger i{display:block;height:2px;background:#fff;border-radius:2px;transition:.25s}
.nav.open .burger i:nth-child(1){transform:translateY(7px) rotate(45deg)}.nav.open .burger i:nth-child(2){opacity:0}.nav.open .burger i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:radial-gradient(1200px 600px at 75% 20%,#2a2f3a 0,transparent 60%),linear-gradient(160deg,#14161b 0%,#1b1f27 55%,#14161b 100%);color:#fff;overflow:hidden;padding:110px 0 70px}
.hero-bg{position:absolute;inset:0;opacity:.5}.hero-bg svg{width:100%;height:100%}
.hero-bg .circ path{fill:none;stroke:rgba(242,140,40,.22);stroke-width:2;stroke-dasharray:8 10;animation:flow 18s linear infinite}
.hero-bg .dots circle{fill:var(--acc);opacity:.7;animation:blink 3s ease-in-out infinite}
.hero-bg .dots circle:nth-child(2n){animation-delay:1.2s}
@keyframes flow{to{stroke-dashoffset:-360}}@keyframes blink{50%{opacity:.15}}
.hero-in{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;color:#ffd2a6;background:rgba(242,140,40,.12);border:1px solid rgba(242,140,40,.3);padding:6px 13px;border-radius:999px;margin-bottom:22px}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--acc);box-shadow:0 0 0 4px rgba(242,140,40,.25)}
.hero h1{font-size:clamp(34px,5vw,58px);font-weight:800}.hero h1 span{color:var(--acc)}
.hero-tx>p{font-size:18px;color:rgba(255,255,255,.75);margin:22px 0 30px;max-width:600px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-trust{list-style:none;padding:0;margin:42px 0 0;display:flex;gap:34px;flex-wrap:wrap}
.hero-trust li{display:flex;flex-direction:column}.hero-trust b{font-size:24px;color:#fff}.hero-trust span{font-size:13px;color:rgba(255,255,255,.6)}
.hero-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(12px);border-radius:20px;padding:26px;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.hc-head{font-weight:700;font-size:17px;display:flex;align-items:center;gap:9px;margin-bottom:16px}
.dot{width:9px;height:9px;border-radius:50%}.dot.g{background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.2)}
.hero-card ul{list-style:none;padding:0;margin:0 0 22px;display:grid;gap:12px}
.hero-card li{display:flex;gap:11px;align-items:center;font-size:15px;color:rgba(255,255,255,.85)}
.hero-card li svg{width:22px;height:22px;flex-shrink:0;padding:3px;border-radius:7px;background:rgba(242,140,40,.18);fill:var(--acc)}

/* Secciones */
.sec{padding:96px 0}.sec-soft{background:var(--soft)}
.sec-dark{background:linear-gradient(160deg,#14161b,#1d2129);color:#fff}
.sec-head{text-align:center;max-width:680px;margin:0 auto 48px}
.sec-head p{color:var(--mut);margin-top:12px;font-size:17px}
.kicker{display:inline-block;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--acc);margin-bottom:10px}
h2{font-size:clamp(28px,3.4vw,42px);font-weight:800}
.lead{font-size:17px;color:rgba(255,255,255,.72);margin-top:16px}
.sec:not(.sec-dark) .lead{color:var(--mut)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(20,22,27,.12);border-color:#f6c79a}

.serv{padding:28px;display:flex;flex-direction:column;gap:10px}
.serv-ic{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,#fff3e6,#ffe2c4);display:grid;place-items:center;margin-bottom:6px}
.serv-ic svg{width:28px;height:28px;fill:var(--acc2)}
.serv h3{font-size:19px}.serv p{color:var(--mut);font-size:15px;flex:1}
.serv a{color:var(--acc2);font-weight:600;text-decoration:none;font-size:14.5px}.serv a:hover{text-decoration:underline}

.why{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.checks{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:12px}
.checks li{padding-left:34px;position:relative;color:rgba(255,255,255,.85)}
.checks li::before{content:"";position:absolute;left:0;top:2px;width:22px;height:22px;border-radius:7px;background:rgba(242,140,40,.18) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23F28C28'%3E%3Cpath d='M9 16.17 4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center/16px no-repeat}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--r);padding:26px}
.stat b{display:block;font-size:36px;color:var(--acc);font-weight:800;line-height:1.1}.stat span{color:rgba(255,255,255,.68);font-size:14px}

.filters{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:-20px 0 32px}
.filters button{border:1px solid var(--line);background:#fff;padding:8px 16px;border-radius:999px;font:inherit;font-size:14px;font-weight:500;cursor:pointer;color:var(--mut)}
.filters button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.proj{overflow:hidden}
.proj-img{position:relative;aspect-ratio:16/10;background:#e9ebef;cursor:zoom-in;overflow:hidden}
.proj-img img{width:100%;height:100%;object-fit:cover;transition:.4s}.proj:hover .proj-img img{transform:scale(1.05)}
.proj-img.ph{cursor:default;display:grid;place-items:center;background:radial-gradient(circle at 30% 20%,#2a2f3a,#14161b)}
.proj-img.ph svg{width:64px;height:64px;fill:rgba(242,140,40,.75)}
.tag{position:absolute;left:14px;top:14px;background:rgba(20,22,27,.8);color:#fff;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.proj-tx{padding:20px 22px 24px}.proj-tx h3{font-size:18px;margin-bottom:6px}.proj-tx p{color:var(--mut);font-size:14.5px}

.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
.steps li{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;position:relative}
.steps b{width:42px;height:42px;border-radius:12px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:18px;margin-bottom:14px}
.steps h3{font-size:18px;margin-bottom:6px}.steps p{color:var(--mut);font-size:14.5px}

.logos{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:34px}
.logo{height:88px;border:1px solid var(--line);border-radius:14px;display:grid;place-items:center;padding:14px;background:#fff;filter:grayscale(1);opacity:.75;transition:.25s}
.logo:hover{filter:none;opacity:1}.logo img{max-height:56px;object-fit:contain}.logo span{font-weight:700;color:var(--mut)}
.sectors{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.sectors div{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;padding:26px 16px;border-radius:var(--r);background:var(--soft)}
.sectors svg{width:36px;height:36px;fill:var(--acc);margin-bottom:6px}.sectors span{font-size:14px;color:var(--mut)}

.cot{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.cot-side{display:grid;gap:12px;margin-top:30px}
.cot-link{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:14px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);text-decoration:none;transition:.2s}
.cot-link:hover{border-color:var(--acc)}.cot-link svg{width:30px;height:30px;fill:var(--acc)}
.cot-link span{display:flex;flex-direction:column}.cot-link small{color:rgba(255,255,255,.6);font-size:14px}
.form{background:#fff;color:var(--tx);border-radius:20px;padding:30px;display:grid;gap:14px;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.form label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;color:#3b414b}.form label em{font-weight:400;color:var(--mut);font-style:normal}
.form input,.form select,.form textarea{font:inherit;font-size:15px;font-weight:400;padding:12px 13px;border:1px solid #d7dbe2;border-radius:10px;background:#fff;color:var(--tx);width:100%}
.form input:focus,.form select:focus,.form textarea:focus{outline:3px solid rgba(242,140,40,.2);border-color:var(--acc)}
.form textarea{resize:vertical}.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form .chk{flex-direction:row;align-items:flex-start;gap:10px;font-weight:400;color:var(--mut);font-size:13.5px}.form .chk input{width:18px;height:18px;margin-top:2px;flex-shrink:0}
.hp{position:absolute!important;left:-9999px}
.form-msg{display:none;padding:12px 14px;border-radius:10px;font-size:14px}.form-msg.ok{display:block;background:#dcfce7;color:#166534}.form-msg.err{display:block;background:#fee2e2;color:#991b1b}

.contact{display:grid;gap:36px}
.cards4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.ccard{border:1px solid var(--line);border-radius:var(--r);padding:24px;display:flex;flex-direction:column;gap:6px;background:#fff}
.ccard svg{width:30px;height:30px;fill:var(--acc);margin-bottom:6px}.ccard span,.ccard a{color:var(--mut);font-size:14.5px;text-decoration:none;word-break:break-word}.ccard a:hover{color:var(--acc2)}

/* Pie */
.foot{background:#0f1115;color:rgba(255,255,255,.72);padding:70px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{margin:18px 0 22px;font-size:14.5px;max-width:330px}
.foot h4{color:#fff;font-size:15px;margin:6px 0 16px}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;font-size:14.5px}
.foot a{text-decoration:none}.foot a:hover{color:var(--acc)}
.foot-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.08);margin-top:54px;padding:22px 0;font-size:13.5px;color:rgba(255,255,255,.5)}

.wa-float{position:fixed;right:20px;bottom:20px;z-index:40;width:58px;height:58px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 10px 28px rgba(37,211,102,.45);transition:.2s}
.wa-float:hover{transform:scale(1.07)}.wa-float svg{width:32px;height:32px;fill:#fff}
.lb{position:fixed;inset:0;z-index:90;background:rgba(0,0,0,.9);display:grid;place-items:center;padding:30px}
.lb[hidden]{display:none}.lb img{max-height:82vh;border-radius:10px}.lb p{color:#fff;text-align:center;margin-top:12px}
.lb-x{position:absolute;top:18px;right:22px;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.hero-bg path,.hero-bg circle{animation:none}}

/* Responsive */
@media(max-width:1020px){
  .menu{position:fixed;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;background:#14161b;padding:14px 20px 22px;gap:2px;transform:translateY(-130%);transition:.3s;box-shadow:0 20px 40px rgba(0,0,0,.35)}
  .nav.open .menu{transform:none}.nav.open{background:#14161b}
  .menu a{padding:13px 12px;font-size:16px}.menu .menu-cta{margin:10px 0 0}
  .burger{display:flex}.acceso{margin-left:auto}
  .hero-in,.why,.cot{grid-template-columns:1fr;gap:40px}
  .grid-3{grid-template-columns:1fr 1fr}.steps,.cards4,.sectors{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .wrap{width:min(1180px,100% - 28px)}.sec{padding:70px 0}
  .acceso span{display:none}.acceso{padding:9px 11px}
  .hero{padding-top:100px}.hero-trust{gap:22px}.hero-cta .btn{flex:1}
  .grid-3,.steps,.row2,.stats{grid-template-columns:1fr}.cards4,.sectors{grid-template-columns:1fr 1fr}
  .form{padding:22px}.foot-grid{grid-template-columns:1fr}
}