/* ==============================================================
   CALCULODEHUELLA.ES - Hoja de estilos principal
   Un servicio de ENERTRIA SOLUTIONS S.L.
   Paleta Enertria: navy #15324a - verde #34b14a - teal #1f9ea1
   ============================================================== */

:root{
  --navy:#15324a;
  --navy-700:#0f2638;
  --navy-50:#eef3f7;
  --green:#34b14a;
  --green-600:#2a9b3f;
  --teal:#1f9ea1;
  --teal-600:#178285;
  --ink:#1d2b36;
  --muted:#5b6b78;
  --line:#e3e9ee;
  --bg:#ffffff;
  --bg-soft:#f5f8fa;
  --radius:16px;
  --shadow-sm:0 2px 10px rgba(21,50,74,.06);
  --shadow:0 14px 40px rgba(21,50,74,.10);
  --max:1180px;
  --grad:linear-gradient(135deg,#34b14a 0%,#1f9ea1 100%);
  --grad-navy:linear-gradient(135deg,#15324a 0%,#0f2638 100%);
  --font:'Poppins','Segoe UI',system-ui,-apple-system,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:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}
h1,h2,h3,h4{line-height:1.18;font-weight:700;letter-spacing:-.02em;color:var(--navy)}
h1{font-size:clamp(2rem,4.4vw,3.35rem)}
h2{font-size:clamp(1.5rem,2.9vw,2.25rem)}
h3{font-size:1.14rem}
h4{font-size:1rem}
p{color:var(--muted)}
section{padding:78px 0}
strong{color:var(--ink)}

/* ---------- Utilidades ---------- */
.eyebrow{
  display:block;font-size:.78rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--green);margin-bottom:14px;
}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin:0 auto 44px;text-align:center}
.lead{font-size:1.06rem}
.bg-soft{background:var(--bg-soft)}
.center{text-align:center}
.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}
.small{font-size:.9rem}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;border:none;cursor:pointer;
  font-family:var(--font);font-size:.95rem;font-weight:600;
  padding:13px 24px;border-radius:999px;transition:.25s;white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(52,177,74,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--navy);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--green);color:var(--green-600)}
.btn-white{background:#fff;color:var(--navy)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.18)}
.btn-outline-white{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn-outline-white:hover{background:rgba(255,255,255,.12)}
.arrow{transition:transform .25s}
.btn:hover .arrow{transform:translateX(4px)}

/* ---------- Cabecera ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line);
}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{width:38px;height:28px;flex:0 0 auto}
.brand-txt{font-weight:700;font-size:1.06rem;letter-spacing:-.03em;color:var(--navy)}
.brand-txt .dom{color:var(--green)}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{position:relative;font-size:.93rem;font-weight:500;color:var(--navy);padding:6px 0}
.nav-links a:not(.btn)::after{
  content:'';position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--grad);transition:right .25s;
}
.nav-links a:not(.btn):hover::after,.nav-links a.active:not(.btn)::after{right:0}
.nav-links a.active:not(.btn){color:var(--green-600)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--navy);transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--grad-navy);color:#fff;padding:104px 0 108px;overflow:hidden}
.hero::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(700px 320px at 88% 12%,rgba(52,177,74,.28),transparent 60%),
    radial-gradient(600px 300px at 12% 88%,rgba(31,158,161,.26),transparent 60%);
}
.hero .container{position:relative;z-index:2;max-width:900px}
.hero h1{color:#fff}
.hero p.lead{color:rgba(255,255,255,.82);max-width:660px;margin-top:20px;font-size:1.1rem}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0 0}
.tag{
  font-size:.82rem;font-weight:600;padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);color:#fff;
}
.tag.red{background:var(--green);border-color:transparent}
.tag.comp{background:var(--teal);border-color:transparent}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ---------- Hero interior ---------- */
.page-hero{position:relative;background:var(--grad-navy);color:#fff;padding:74px 0 66px;overflow:hidden}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(620px 280px at 85% 20%,rgba(52,177,74,.24),transparent 62%);
}
.page-hero .container{position:relative;z-index:2;max-width:860px}
.page-hero h1{color:#fff;font-size:clamp(1.8rem,3.6vw,2.7rem)}
.page-hero p{color:rgba(255,255,255,.8);margin-top:16px;font-size:1.04rem}
.page-hero .hero-actions{margin-top:26px}
.breadcrumb{font-size:.84rem;color:rgba(255,255,255,.6);margin-bottom:16px}
.breadcrumb a:hover{color:#fff}

/* ---------- Rejillas ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* ---------- Tarjetas ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow-sm);transition:.28s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.card h3{margin-bottom:10px}
.card p{font-size:.95rem}
.card .more{display:inline-flex;gap:7px;margin-top:16px;font-weight:600;font-size:.9rem;color:var(--green-600)}
.card ul{margin-top:14px}
.card ul li{position:relative;padding-left:22px;font-size:.93rem;color:var(--muted);margin-bottom:8px}
.card ul li::before{
  content:'';position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:50%;background:var(--grad);
}

.scope{position:relative;overflow:hidden}
.scope::before{content:'';position:absolute;left:0;top:0;height:5px;width:100%;background:var(--grad)}
.scope.s2::before{background:linear-gradient(135deg,#1f9ea1,#15324a)}
.scope.s3::before{background:linear-gradient(135deg,#15324a,#34b14a)}
.scope .num{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;
  border-radius:12px;background:var(--navy-50);color:var(--navy);font-weight:700;margin-bottom:16px;
}

.ico{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-weight:700;font-size:1rem;margin-bottom:16px;
}
.ico.alt{background:var(--navy-50);color:var(--navy)}

/* ---------- Proceso ---------- */
.svc{
  display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 26px;transition:.28s;
}
.svc:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.svc .num{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;
}
.svc h3{margin-bottom:6px}
.svc p{font-size:.94rem}

/* ---------- Cifras ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .n{font-size:2rem;font-weight:700;color:var(--navy);letter-spacing:-.03em}
.stat .l{font-size:.88rem;color:var(--muted)}

/* ---------- Sellos ---------- */
.seals{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.seal{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:#fff;text-align:center}
.seal .badge{
  width:78px;height:78px;margin:0 auto 16px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.8rem;color:#fff;background:var(--grad);letter-spacing:.04em;text-transform:uppercase;
}
.seal.b2 .badge{background:linear-gradient(135deg,#1f9ea1,#178285)}
.seal.b3 .badge{background:linear-gradient(135deg,#15324a,#1f9ea1)}
.seal p{font-size:.93rem}

/* ---------- Notas ---------- */
.callout{border-left:4px solid var(--green);background:var(--navy-50);border-radius:12px;padding:20px 24px}
.callout p{color:var(--ink);font-size:.95rem}
.callout .src{display:block;margin-top:10px;font-size:.82rem;color:var(--muted)}
.callout a{color:var(--green-600);font-weight:600}

/* ---------- Listas ---------- */
.check li{position:relative;padding-left:30px;margin-bottom:12px;color:var(--muted)}
.check li::before{
  content:'';position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;background:var(--grad);
}
.check li::after{
  content:'';position:absolute;left:6px;top:10px;width:6px;height:3px;border-left:2px solid #fff;
  border-bottom:2px solid #fff;transform:rotate(-45deg);
}
.plain li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--muted);font-size:.95rem}
.plain li::before{content:'';position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--teal)}

/* ---------- Tabla ---------- */
.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.tbl th,.tbl td{padding:14px 18px;text-align:left;font-size:.93rem;border-bottom:1px solid var(--line)}
.tbl th{background:var(--navy);color:#fff;font-weight:600;font-size:.88rem}
.tbl td{color:var(--muted)}
.tbl tr:last-child td{border-bottom:0}
.tbl-wrap{overflow-x:auto}

/* ---------- CTA ---------- */
.cta{
  background:var(--grad-navy);border-radius:22px;padding:52px 56px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;position:relative;overflow:hidden;
}
.cta::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(500px 240px at 90% 20%,rgba(52,177,74,.30),transparent 60%);
}
.cta>*{position:relative;z-index:2}
.cta h2{color:#fff;margin-bottom:8px}
.cta p{color:rgba(255,255,255,.78)}

/* ---------- FAQ ---------- */
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin-bottom:14px}
.faq summary{cursor:pointer;font-weight:600;color:var(--navy);list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';color:var(--green);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:'-'}
.faq details p{margin-top:12px;font-size:.95rem}

/* ---------- Contacto ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px}
.field{margin-bottom:16px}
.field label{display:block;font-size:.86rem;font-weight:600;color:var(--navy);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--font);font-size:.95rem;color:var(--ink);
  padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;background:#fff;transition:.2s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green)}
.field textarea{min-height:130px;resize:vertical}
.form-note{font-size:.82rem;color:var(--muted);margin-top:10px}
.form-msg{display:none;margin-bottom:16px;padding:13px 16px;border-radius:12px;font-size:.92rem}
.form-msg.ok{display:block;background:#e9f7ec;color:#1e7a33;border:1px solid #bfe6c8}
.form-msg.ko{display:block;background:#fdeaea;color:#a32020;border:1px solid #f3c4c4}

/* ---------- Texto legal ---------- */
.legal{max-width:840px;margin:0 auto}
.legal h2{margin:34px 0 12px;font-size:1.3rem}
.legal h3{margin:22px 0 8px}
.legal p,.legal li{font-size:.95rem;color:var(--muted)}
.legal ul{margin:10px 0 10px 0}
.legal ul li{position:relative;padding-left:20px;margin-bottom:8px}
.legal ul li::before{content:'';position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--green)}

/* ---------- Pie ---------- */
.site-footer{background:var(--navy-700);color:rgba(255,255,255,.72);padding:58px 0 26px;font-size:.93rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.site-footer h4{color:#fff;margin-bottom:14px;font-size:.95rem}
.site-footer a{display:block;color:rgba(255,255,255,.72);margin-bottom:9px;transition:.2s}
.site-footer a:hover{color:var(--green)}
.site-footer .desc{color:rgba(255,255,255,.62);margin:14px 0;max-width:340px;font-size:.92rem}
.site-footer .brand-txt{color:#fff}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:.84rem;color:rgba(255,255,255,.55);
}
.by-enertria{margin-top:10px;font-size:.86rem;color:rgba(255,255,255,.6)}
.by-enertria a{display:inline;color:var(--green);font-weight:600}

/* ---------- Animacion ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .grid-3{grid-template-columns:1fr}
  .seals{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .cta{flex-direction:column;text-align:center;padding:42px 28px}
}
@media(max-width:680px){
  section{padding:56px 0}
  .grid-2,.grid-4{grid-template-columns:1fr}
  .hero{padding:76px 0 80px}
  .nav-links{
    position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:10px 22px 20px;display:none;box-shadow:var(--shadow-sm);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-links a.btn{justify-content:center;margin-top:14px;border-bottom:0}
  .nav-toggle{display:flex}
  .footer-grid{grid-template-columns:1fr}
}


/* ================= Ecosistema Enertria - bloque cross-marca (v1 2026-08-12) ================= */
.eco{background:var(--bg-soft);border-top:1px solid var(--line)}
.eco-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:28px}
.eco-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px 24px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.eco-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfdae3}
.eco-card .eco-role{display:block;font-size:.72rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--teal-600);margin:0 0 8px}
.eco-card .eco-name{font-family:var(--font);font-weight:700;font-size:1.12rem;line-height:1.25;color:var(--navy);margin:0 0 8px}
.eco-card .eco-name span{color:var(--muted);font-weight:500}
.eco-card>p{color:var(--muted);font-size:.94rem;line-height:1.6;margin:0 0 14px}
.eco-card ul{list-style:none;padding:0;margin:0 0 20px}
.eco-card ul li{position:relative;padding-left:18px;font-size:.9rem;line-height:1.5;color:var(--ink);margin-bottom:7px}
.eco-card ul li:before{content:'';position:absolute;left:0;top:.55em;width:7px;height:7px;border-radius:50%;background:var(--grad)}
.eco-card .eco-go{margin-top:auto;align-self:flex-start;font-weight:600;font-size:.92rem;color:var(--green-600);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s ease}
.eco-card .eco-go:hover{border-bottom-color:var(--green-600)}
.eco-card.is-here{border-color:var(--green);background:linear-gradient(180deg,#f3fbf5 0%,#fff 55%)}
.eco-here{position:absolute;top:16px;right:16px;background:var(--grad);color:#fff;font-size:.63rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;padding:5px 11px;border-radius:999px}
.eco-flow{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px;margin-top:26px;padding:18px 20px;background:#fff;border:1px dashed #cfdae3;border-radius:var(--radius);text-align:center}
.eco-flow span{font-size:.88rem;color:var(--muted);line-height:1.5}
.eco-flow b{color:var(--navy);font-weight:600}
.eco-flow i{color:var(--teal-600);font-style:normal;font-weight:700}
.eco-band{background:var(--grad-navy);color:#fff;border-radius:var(--radius);padding:28px 30px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;box-shadow:var(--shadow)}
.eco-band .eco-band-txt{max-width:620px}
.eco-band h3{color:#fff;font-size:1.22rem;margin:0 0 8px;line-height:1.3}
.eco-band p{margin:0;color:#c3d2de;font-size:.94rem;line-height:1.6}
.eco-band strong{color:#fff;font-weight:600}
.eco-links{display:flex;flex-wrap:wrap;gap:10px}
.eco-links a{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.24);color:#fff;text-decoration:none;font-size:.86rem;font-weight:600;padding:10px 16px;border-radius:999px;transition:background .2s ease,transform .2s ease}
.eco-links a:hover{background:rgba(255,255,255,.20);transform:translateY(-2px)}
.eco-tri{display:inline-flex;gap:3px;vertical-align:middle;margin-right:2px}
.eco-tri i{display:block;width:9px;height:3px;background:var(--green);border-radius:1px}
@media(max-width:900px){.eco-grid{grid-template-columns:1fr}.eco-band{padding:24px 22px}}

/* Nav ampliado (7 elementos) tras incorporar Ecosistema: menu hamburguesa hasta 1080px */
@media(min-width:1081px){
  .nav-links{gap:20px}
  .nav-links a{white-space:nowrap}
}
@media(max-width:1080px){
  .nav-links{position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:10px 22px 20px;display:none;box-shadow:var(--shadow-sm);z-index:60}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line);white-space:normal}
  .nav-links a.btn{justify-content:center;margin-top:14px;border-bottom:0}
  .nav-toggle{display:flex}
}

/* texto destacado dentro de heroes oscuros */
.hero strong,.page-hero strong{color:#fff}

/* ajuste de ritmo vertical del bloque ecosistema */
.eco>.container>.eyebrow{display:block;margin-bottom:10px}
.eco>.container>h2{margin:0 0 14px}
.eco>.container>.lead{max-width:860px;margin:0}