/* ============================================================
   LAVASUR · Landing / acceso · estilo sobrio y moderno
   ============================================================ */
:root{
  --ink:#1b2733;
  --muted:#5f6c7b;
  --line:#e6eaef;
  --bg:#f6f8fa;
  --surface:#ffffff;
  --navy:#16365c;        /* azul profundo del logo (LAVA) */
  --blue:#2f8fd6;        /* azul claro del logo (SUR/agua) */
  --navy-d:#0f2742;
  --ok-bg:#e7f3ec; --ok-ink:#1f6b41;
  --err-bg:#fae9e8; --err-ink:#8a2b27;
  --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.05), 0 8px 24px rgba(16,24,40,.06);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{height:46px}
.nav{display:flex;align-items:center;gap:26px}
.nav a{color:var(--muted);font-size:15px;font-weight:500}
.nav a:hover{color:var(--ink)}
.btn{display:inline-block;border:none;cursor:pointer;font-family:inherit;font-size:15px;
  font-weight:600;padding:11px 20px;border-radius:10px;transition:.15s;text-align:center}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-d)}
.btn-ghost{background:transparent;color:var(--navy);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--navy);}
.btn-block{display:block;width:100%}
.nav-toggle{display:none}

/* ---------- Hero ---------- */
.hero{padding:62px 0 50px}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--blue);background:#eaf4fb;padding:6px 12px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:44px;line-height:1.1;letter-spacing:-.01em;color:var(--navy-d)}
.hero p.lead{margin-top:16px;font-size:18px;color:var(--muted);max-width:34ch}
.hero-cta{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}
.trust{margin-top:26px;display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:14px}
.trust b{color:var(--ink)}

/* ---------- Login card ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.access{padding:26px}
.access h2{font-size:19px;color:var(--navy-d)}
.access .sub{color:var(--muted);font-size:14px;margin-top:2px;margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input{width:100%;padding:12px 13px;border:1px solid #d8dee6;border-radius:10px;font-size:15px;
  font-family:inherit;color:var(--ink);background:#fff;transition:.15s}
.field input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,143,214,.15)}
.access .row-between{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-size:14px}
.access .row-between a{color:var(--blue);font-weight:600}
.alert{padding:11px 14px;border-radius:10px;font-size:14px;margin-bottom:16px}
.alert-error{background:var(--err-bg);color:var(--err-ink)}
.alert-ok{background:var(--ok-bg);color:var(--ok-ink)}
.logged{padding:26px;text-align:center}
.logged .who{font-size:15px;color:var(--muted);margin-bottom:14px}

/* ---------- Section base ---------- */
.section{padding:58px 0}
.section.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section .head{text-align:center;max-width:60ch;margin:0 auto 34px}
.section .head h2{font-size:30px;color:var(--navy-d);letter-spacing:-.01em}
.section .head p{color:var(--muted);margin-top:10px;font-size:16px}

/* ---------- Servicios ---------- */
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.svc{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);transition:.15s}
.svc:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.svc .ico{width:46px;height:46px;border-radius:12px;background:#eaf4fb;color:var(--blue);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.svc h3{font-size:17px;color:var(--navy-d)}
.svc p{color:var(--muted);font-size:14.5px;margin-top:6px}

/* ---------- Seguimiento band ---------- */
.track{background:var(--navy);color:#fff;border-radius:var(--radius);padding:30px;display:grid;
  grid-template-columns:1fr auto;gap:22px;align-items:center}
.track h3{font-size:22px}
.track p{color:#c9d6e5;margin-top:6px;font-size:15px}
.track form{display:flex;gap:10px;flex-wrap:wrap}
.track input{padding:12px 14px;border:none;border-radius:10px;font-size:15px;min-width:230px;font-family:inherit}
.track .btn-primary{background:var(--blue)}
.track .btn-primary:hover{background:#2278b8}

/* ---------- Contacto ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.contact-item{padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.contact-item .ico{color:var(--blue);margin-bottom:10px}
.contact-item .lbl{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.contact-item .val{font-size:16px;color:var(--ink);margin-top:4px;font-weight:500;word-break:break-word}
.contact-item a.val:hover{color:var(--blue)}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-d);color:#aebfd3;padding:40px 0 30px;margin-top:0}
.site-footer .wrap{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.site-footer .logo-foot{background:#fff;padding:10px 14px;border-radius:10px;display:inline-block}
.site-footer .logo-foot img{height:40px}
.site-footer .muted{font-size:13px;margin-top:12px}
.site-footer a.admin-link{color:#d6e1ee;font-size:13px;border:1px solid rgba(255,255,255,.18);
  padding:9px 14px;border-radius:9px;display:inline-block}
.site-footer a.admin-link:hover{border-color:rgba(255,255,255,.5);color:#fff}

/* ---------- Página administración ---------- */
.admin-page{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}
.admin-top{height:6px;background:linear-gradient(90deg,var(--navy),var(--blue))}
.admin-center{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 20px}
.admin-box{width:100%;max-width:400px}
.admin-box .logo-c{text-align:center;margin-bottom:18px}
.admin-box .logo-c img{height:56px;display:inline-block}
.admin-card{padding:28px}
.admin-card h1{font-size:20px;color:var(--navy-d);text-align:center}
.admin-card .sub{text-align:center;color:var(--muted);font-size:14px;margin-top:4px;margin-bottom:20px}
.back{display:block;text-align:center;margin-top:16px;font-size:14px;color:var(--muted)}
.back:hover{color:var(--blue)}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .hero .wrap{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:34px}
  .grid-3,.contact-grid{grid-template-columns:1fr}
  .track{grid-template-columns:1fr}
  .nav{position:fixed;inset:74px 0 auto 0;background:#fff;flex-direction:column;align-items:stretch;
    gap:0;padding:8px 22px 18px;border-bottom:1px solid var(--line);display:none}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:10px}
  .nav-toggle{display:inline-flex;background:none;border:1px solid var(--line);border-radius:9px;
    padding:9px 11px;cursor:pointer}
}