/*
Theme Name: 4CERO
Theme URI: https://4cero.com
Author: 4CERO
Description: Tema propio de 4CERO. Liviano, sin constructor visual. Las secciones se cargan como bloques "HTML personalizado" con las clases .c4.
Version: 1.0.0
Requires at least: 6.4
Requires PHP: 8.1
License: Propietario
Text Domain: cuatrocero
*/

/* ---------- Base del sitio ---------- */
:root{
  --c4-bg:#E8EBED; --c4-surface:#F5F6F7; --c4-panel:#DDE2E5; --c4-ink:#18212A; --c4-muted:#56626C; --c4-line:#C3CBD1;
  --c4-accent:#1D4F7A; --c4-alarm:#D9761C; --c4-ok:#2F7D55;
  --c4-display:"Barlow Condensed","Arial Narrow",Arial,sans-serif;
  --c4-body:"Barlow","Segoe UI",Arial,sans-serif;
  --c4-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--c4-bg);color:var(--c4-ink);font-family:var(--c4-body);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--c4-accent)}
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}
.skip-link:focus{position:fixed;top:8px;left:8px;width:auto;height:auto;clip:auto;z-index:100;background:#fff;padding:8px 12px}
:focus-visible{outline:2px solid var(--c4-accent);outline-offset:3px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:var(--c4-bg);border-bottom:1px solid var(--c4-line)}
.admin-bar .site-header{top:32px}
@media (max-width:782px){.admin-bar .site-header{top:46px}}
.site-header .bar{max-width:1160px;margin:0 auto;padding-inline:20px;display:flex;align-items:center;gap:24px;height:68px}
.site-logo{display:flex;align-items:center;text-decoration:none;color:var(--c4-ink);font-family:var(--c4-display);font-weight:700;font-size:28px;letter-spacing:.02em;line-height:1}
.site-logo b{color:var(--c4-accent)}
.site-logo img{max-height:44px;width:auto}
.main-nav{margin-left:auto}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:24px}
.main-nav a{text-decoration:none;color:var(--c4-muted);font-weight:500;font-size:15px}
.main-nav a:hover,.main-nav .current-menu-item>a,.main-nav .current_page_item>a{color:var(--c4-ink)}
.main-nav .sub-menu{display:none}
.header-cta{display:inline-flex;align-items:center;font-weight:600;font-size:15px;padding:11px 18px;border-radius:3px;text-decoration:none;background:var(--c4-accent);color:#fff;white-space:nowrap}
.header-cta:hover{filter:brightness(1.1);color:#fff}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--c4-line);border-radius:3px;padding:8px 10px;cursor:pointer;color:var(--c4-ink);font:600 14px var(--c4-body)}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .header-cta{display:none}
  .main-nav{position:absolute;top:100%;left:0;right:0;background:var(--c4-bg);border-bottom:1px solid var(--c4-line);display:none;margin:0}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:0;padding:8px 20px 16px}
  .main-nav li a{display:block;padding:12px 0;border-bottom:1px solid var(--c4-line);font-size:17px}
  .main-nav .menu-cta a{color:var(--c4-accent);font-weight:600;border-bottom:0}
}
@media (min-width:901px){.main-nav .menu-cta{display:none}}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--c4-line);padding-block:28px;font-size:14px;color:var(--c4-muted)}
.site-footer .bar{max-width:1160px;margin:0 auto;padding-inline:20px;display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}
.site-footer nav{display:flex;gap:18px;flex-wrap:wrap}
.site-footer a{color:var(--c4-muted);text-decoration:none}
.site-footer a:hover{color:var(--c4-ink)}

/* ---------- Páginas de texto (privacidad, etc.) ---------- */
.prose{max-width:760px;margin:0 auto;padding:56px 20px 80px}
.prose h1{font-family:var(--c4-display);font-size:44px;line-height:1.05;margin:0 0 24px}
.prose h2{font-family:var(--c4-display);font-size:30px;margin:36px 0 12px}
.prose p,.prose ul,.prose ol{margin:0 0 16px}

/* ---------- Secciones .c4 ---------- */
.c4{
  --c4-bg:#E8EBED; --c4-surface:#F5F6F7; --c4-panel:#DDE2E5; --c4-ink:#18212A; --c4-muted:#56626C; --c4-line:#C3CBD1;
  --c4-accent:#1D4F7A; --c4-alarm:#D9761C; --c4-ok:#2F7D55;
  --c4-display:"Barlow Condensed","Arial Narrow",Arial,sans-serif;
  --c4-body:"Barlow","Segoe UI",Arial,sans-serif;
  --c4-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  background:var(--c4-bg);color:var(--c4-ink);font-family:var(--c4-body);font-size:17px;line-height:1.55;
  scroll-margin-top:110px;
}
.c4 *,.c4 *::before,.c4 *::after{box-sizing:border-box}
body .c4 h1,body .c4 h2,body .c4 h3{font-family:var(--c4-display);font-weight:600;line-height:1.05;text-wrap:balance;margin:0;padding:0;color:inherit;text-transform:none;letter-spacing:0}
body .c4 h2{font-size:clamp(32px,4.4vw,48px)}
body .c4 h3{font-size:24px}
body .c4 p{margin:0;padding:0}
body .c4 ul{margin:0;padding:0;list-style:none}
body .c4 li{margin:0}
.c4 a{color:inherit}
.c4 .c4-wrap{max-width:1160px;margin:0 auto;padding-inline:20px}
.c4 .tag{font-family:var(--c4-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--c4-muted)}
.c4 .lede{color:var(--c4-muted);max-width:62ch;font-size:18px}
.c4 :focus-visible{outline:2px solid var(--c4-accent);outline-offset:3px}
.c4 .btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--c4-body);font-weight:600;font-size:15px;padding:11px 18px;border-radius:3px;text-decoration:none;border:1px solid transparent;cursor:pointer;line-height:1.2}
.c4 .btn.primary{background:var(--c4-accent);color:#fff}
.c4 .btn.primary:hover{filter:brightness(1.1);color:#fff}
.c4 .btn.ghost{border-color:var(--c4-line);color:var(--c4-ink);background:transparent}
.c4 .btn.ghost:hover{border-color:var(--c4-ink)}
.c4 .chip{font-family:var(--c4-mono);font-size:12px;padding:4px 8px;border:1px solid var(--c4-line);border-radius:2px;background:var(--c4-bg)}
.c4 .chip.us{border-color:var(--c4-accent);color:var(--c4-accent)}

/* secciones */
.c4.blk{padding-block:80px;border-top:1px solid var(--c4-line)}
.c4 .sec-head{display:grid;grid-template-columns:260px 1fr;gap:32px;margin-bottom:44px}
.c4 .sec-head .lede{margin-top:14px}
@media (max-width:800px){.c4 .sec-head{grid-template-columns:1fr;gap:10px}}

/* hero */
.c4.hero{padding-block:64px 56px}
.c4.hero .c4-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
body .c4.hero h1{font-size:clamp(46px,7vw,86px);font-weight:700;text-transform:uppercase;letter-spacing:-.01em;line-height:.95;margin-top:14px}
.c4.hero h1 span{display:block}
.c4.hero h1 .hl{color:var(--c4-accent)}
.c4.hero .lede{margin-top:22px}
.c4.hero .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.c4.hero .facts{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:34px}
.c4.hero .facts span{font-family:var(--c4-mono);font-size:13px;color:var(--c4-muted)}
.c4.hero .facts span::before{content:"▪ ";color:var(--c4-accent)}
@media (max-width:900px){.c4.hero .c4-wrap{grid-template-columns:1fr}}

/* panel HMI */
.c4 .hmi{background:var(--c4-panel);border:1px solid var(--c4-line);border-radius:4px;font-family:var(--c4-mono);font-size:13px;overflow:hidden}
.c4 .hmi-head{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1px solid var(--c4-line);color:var(--c4-muted);font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.c4 .hmi-head .live{display:flex;align-items:center;gap:6px}
.c4 .hmi-head .live i{width:7px;height:7px;border-radius:50%;background:var(--c4-ok)}
.c4 .hmi .row{display:grid;grid-template-columns:86px 1fr auto;gap:10px;align-items:center;padding:11px 14px;border-bottom:1px solid var(--c4-line)}
.c4 .hmi .id{color:var(--c4-muted)}
.c4 .hmi .desc{font-family:var(--c4-body);font-size:14px}
.c4 .hmi .val{font-variant-numeric:tabular-nums;font-weight:500;text-align:right;white-space:nowrap}
.c4 .hmi .bar{grid-column:2/4;height:4px;background:var(--c4-line);border-radius:2px;overflow:hidden}
.c4 .hmi .bar i{display:block;height:100%;background:var(--c4-muted)}
.c4 .hmi .row.alarm{background:rgba(217,118,28,.13)}
.c4 .hmi .row.alarm .val,.c4 .hmi .row.alarm .id{color:var(--c4-alarm)}
.c4 .hmi .row.alarm .bar i{background:var(--c4-alarm)}
.c4 .hmi-foot{padding:12px 14px;font-family:var(--c4-body);font-size:13px;color:var(--c4-muted);display:flex;gap:10px;align-items:flex-start}
.c4 .hmi-foot b{color:var(--c4-alarm);font-family:var(--c4-mono);font-size:12px}

/* problema */
.c4 .problems{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--c4-line);border:1px solid var(--c4-line)}
.c4 .problems > div{background:var(--c4-surface);padding:26px 24px;display:grid;gap:10px;align-content:start}
.c4 .problems .tag{color:var(--c4-alarm)}
.c4 .problems p{color:var(--c4-muted);font-size:16px}
@media (max-width:800px){.c4 .problems{grid-template-columns:1fr}}

/* purdue */
.c4 .purdue{display:grid;gap:6px}
.c4 .lvl{display:grid;grid-template-columns:120px 1fr 1.3fr;gap:18px;align-items:center;background:var(--c4-surface);border:1px solid var(--c4-line);border-radius:3px;padding:16px 18px}
.c4 .lvl .n{font-family:var(--c4-display);font-weight:700;font-size:22px;line-height:1.1}
.c4 .lvl .n small{display:block;font-family:var(--c4-mono);font-weight:400;font-size:11px;color:var(--c4-muted);letter-spacing:.06em;text-transform:uppercase}
.c4 .lvl .what{font-weight:600}
.c4 .lvl .what span{display:block;font-weight:400;color:var(--c4-muted);font-size:14px}
.c4 .chips{display:flex;flex-wrap:wrap;gap:6px}
.c4 .lvl.dmz{background:transparent;border-style:dashed}
.c4 .lvl.dmz .n{color:var(--c4-alarm)}
.c4 .legend{display:flex;flex-wrap:wrap;gap:18px;margin-top:14px;font-size:14px;color:var(--c4-muted)}
.c4 .legend .chip{margin-right:6px}
@media (max-width:760px){.c4 .lvl{grid-template-columns:1fr;gap:8px}}

/* servicios */
.c4 .services{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.c4 .svc{background:var(--c4-surface);border:1px solid var(--c4-line);border-radius:3px;padding:28px 26px;display:grid;gap:14px;grid-template-rows:auto auto 1fr auto;align-content:start}
.c4 .svc ul{display:grid;gap:7px;font-size:15px}
.c4 .svc li{padding-left:16px;position:relative}
.c4 .svc li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:2px;background:var(--c4-accent)}
.c4 .svc .std{font-family:var(--c4-mono);font-size:12px;color:var(--c4-accent);border-top:1px solid var(--c4-line);padding-top:12px}
@media (max-width:900px){.c4 .services{grid-template-columns:1fr}}

/* proceso */
.c4 .steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--c4-ink)}
.c4 .step{padding:20px 22px 0 0;display:grid;gap:8px;align-content:start}
.c4 .step .num{font-family:var(--c4-mono);font-size:13px;color:var(--c4-accent)}
.c4 .step p{color:var(--c4-muted);font-size:15px}
@media (max-width:860px){.c4 .steps{grid-template-columns:1fr 1fr;row-gap:28px}}
@media (max-width:480px){.c4 .steps{grid-template-columns:1fr}}

/* proyectos */
.c4 .cases{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.c4 .case{border-left:3px solid var(--c4-accent);background:var(--c4-surface);padding:24px 26px;display:grid;gap:10px;align-content:start}
.c4 .case p{color:var(--c4-muted);font-size:16px}
.c4 .case .meta{display:flex;flex-wrap:wrap;gap:6px}
@media (max-width:800px){.c4 .cases{grid-template-columns:1fr}}

/* industrias */
.c4 .two{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.c4 .two h2{margin-top:12px}
.c4 .list-plain{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.c4 .list-plain span{padding:7px 12px;border:1px solid var(--c4-line);border-radius:2px;font-size:15px;background:var(--c4-surface)}
@media (max-width:800px){.c4 .two{grid-template-columns:1fr}}

/* equipo */
.c4 .team{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.c4 .person{display:grid;gap:4px;padding-top:18px;border-top:1px solid var(--c4-line);align-content:start}
.c4 .person .role{font-family:var(--c4-mono);font-size:12px;color:var(--c4-accent);text-transform:uppercase;letter-spacing:.05em}
.c4 .person p{color:var(--c4-muted);font-size:15px;margin-top:6px}
@media (max-width:900px){.c4 .team{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.c4 .team{grid-template-columns:1fr}}

/* contacto */
.c4.contact{background:var(--c4-ink);color:#E8EBED}
.c4.contact .c4-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;padding-block:80px}
.c4.contact h2{margin-top:12px}
.c4.contact .lede{color:rgba(232,235,237,.72);margin-top:16px}
.c4.contact .tag{color:rgba(232,235,237,.6)}
.c4 .cinfo{display:grid;gap:18px;margin-top:30px}
.c4 .cinfo div{display:grid;gap:2px}
.c4 .cinfo strong{font-size:19px;font-weight:600;user-select:all;color:#fff}
.c4 form{display:grid;gap:14px;align-content:start;margin:0}
.c4 form label{font-size:14px;font-weight:500;display:grid;gap:6px;color:#E8EBED;margin:0}
body .c4 form input,body .c4 form select,body .c4 form textarea{font:inherit;font-size:16px;height:auto;padding:11px 12px;border-radius:3px;border:1px solid rgba(232,235,237,.3);background:rgba(232,235,237,.08);color:#fff;width:100%;box-shadow:none;margin:0}
body .c4 form select option{color:#18212A}
body .c4 form textarea{min-height:96px;resize:vertical}
.c4 .frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.c4.contact .btn.primary{background:#E8EBED;color:#18212A;justify-self:start}
.c4 .fnote{font-size:13px;color:rgba(232,235,237,.6)}
@media (max-width:860px){.c4.contact .c4-wrap{grid-template-columns:1fr}.c4 .frow{grid-template-columns:1fr}}

/* ---------- Cabecera de páginas internas ---------- */
.c4.page-hero{padding-block:64px 48px}
body .c4.page-hero h1{font-size:clamp(44px,6vw,72px);font-weight:700;text-transform:uppercase;line-height:.95;margin-top:14px;letter-spacing:-.01em}
.c4.page-hero .lede{margin-top:18px}
.c4.page-hero .jump{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}

/* ---------- Detalle de servicio ---------- */
.c4 .svc-detail{display:grid;grid-template-columns:1fr 1.25fr;gap:48px;align-items:start}
.c4 .svc-detail .lede{margin-top:14px}
.c4 .svc-detail .std{font-family:var(--c4-mono);font-size:12px;color:var(--c4-accent);margin-top:20px;padding-top:12px;border-top:1px solid var(--c4-line)}
.c4 .svc-lists{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.c4 .svc-lists > div{background:var(--c4-surface);border:1px solid var(--c4-line);border-radius:3px;padding:22px 22px;display:grid;gap:12px;align-content:start}
.c4 .svc-lists ul{display:grid;gap:8px;font-size:15px}
.c4 .svc-lists li{padding-left:16px;position:relative}
.c4 .svc-lists li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:2px;background:var(--c4-accent)}
@media (max-width:900px){.c4 .svc-detail{grid-template-columns:1fr;gap:24px}}
@media (max-width:560px){.c4 .svc-lists{grid-template-columns:1fr}}
.c4 .svc .std a{text-decoration:none}
.c4 .svc .std a:hover{text-decoration:underline}