/* ============================================================
   ZiSolar — hoja de estilos principal
   Editable: los colores y datos de marca están en :root
   ============================================================ */

:root{
  --ink:#0B1F33;
  --ink-2:#14324F;
  --sun:#FFB020;
  --sun-2:#F58E00;
  --leaf:#12A575;
  --bg:#FFFFFF;
  --bg-soft:#F4F8FB;
  --bg-deep:#08182A;
  --line:#E2EAF1;
  --text:#2B3A46;
  --muted:#65798A;
  --radius:14px;
  --radius-lg:22px;
  --shadow:0 1px 2px rgba(11,31,51,.06), 0 8px 28px rgba(11,31,51,.08);
  --shadow-lg:0 18px 50px rgba(11,31,51,.16);
  --maxw:1180px;
  --ease:cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit}
h1,h2,h3,h4{color:var(--ink);line-height:1.18;margin:0 0 .5em;font-weight:750;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,5.2vw,3.6rem)}
h2{font-size:clamp(1.75rem,3.6vw,2.6rem)}
h3{font-size:1.2rem;letter-spacing:-.01em}
p{margin:0 0 1.1em}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:88px 0}
.section--soft{background:var(--bg-soft)}
.section--dark{background:var(--bg-deep);color:#C9D8E5}
.section--dark h2,.section--dark h3{color:#fff}
.center{text-align:center}
.lead{font-size:1.12rem;color:var(--muted);max-width:62ch}
.center .lead{margin-left:auto;margin-right:auto}
.eyebrow{
  display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--sun-2);margin-bottom:14px;
}
.section--dark .eyebrow{color:var(--sun)}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:15px 30px;border-radius:999px;border:0;cursor:pointer;
  font:inherit;font-weight:700;font-size:1rem;text-decoration:none;
  transition:transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:linear-gradient(135deg,var(--sun),var(--sun-2));color:#25190A;box-shadow:0 6px 20px rgba(245,142,0,.32)}
.btn--primary:hover{box-shadow:0 12px 30px rgba(245,142,0,.42)}
.btn--dark{background:var(--ink);color:#fff}
.btn--ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn--ghost:hover{background:rgba(255,255,255,.12)}
.btn--block{width:100%}

/* ---------- Header ---------- */
.header{
  position:sticky;top:0;z-index:900;background:rgba(255,255,255,.93);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line);
}
.header__inner{display:flex;align-items:center;gap:20px;height:74px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:1.3rem;color:var(--ink);letter-spacing:-.03em}
.logo svg{width:32px;height:32px;flex:none}
.logo span b{color:var(--sun-2)}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav a{
  text-decoration:none;font-size:.96rem;font-weight:600;color:var(--ink-2);
  padding:9px 14px;border-radius:9px;transition:background .16s var(--ease),color .16s var(--ease);
}
.nav a:hover{background:var(--bg-soft);color:var(--ink)}
.nav a.is-active{color:var(--sun-2)}
.nav .btn{margin-left:10px;padding:11px 22px;font-size:.94rem}
.burger{
  margin-left:auto;display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:11px;cursor:pointer;align-items:center;justify-content:center;
}
.burger span{display:block;width:19px;height:2px;background:var(--ink);position:relative;transition:.2s var(--ease)}
.burger span::before,.burger span::after{content:'';position:absolute;left:0;width:19px;height:2px;background:var(--ink);transition:.2s var(--ease)}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

@media (max-width:900px){
  .burger{display:flex}
  .nav{
    position:fixed;inset:74px 0 auto 0;flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);padding:14px 22px 26px;gap:2px;
    box-shadow:var(--shadow);display:none;
  }
  .nav.is-open{display:flex}
  .nav a{padding:14px 8px;font-size:1.05rem;border-bottom:1px solid var(--line)}
  .nav .btn{margin:14px 0 0;padding:15px}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background:linear-gradient(150deg,#08182A 0%,#0F2E4A 52%,#123B5E 100%);
}
.hero__bg{position:absolute;inset:0;object-fit:cover;width:100%;height:100%;opacity:.62}
.hero::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(8,24,42,.93) 0%,rgba(8,24,42,.68) 48%,rgba(8,24,42,.22) 100%);
}
.hero__inner{position:relative;z-index:2;padding:118px 0 108px;max-width:720px}
.hero h1{color:#fff;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--sun);}
.hero p{font-size:1.2rem;color:#CBDCEA;max-width:56ch}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero__stats{
  position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);
  gap:8px;border-top:1px solid rgba(255,255,255,.16);padding:26px 0 30px;
}
.hero__stats div{text-align:center}
.hero__stats b{display:block;font-size:1.85rem;color:var(--sun);font-weight:800;letter-spacing:-.02em;line-height:1.2}
.hero__stats small{font-size:.82rem;color:#A8BFD2;letter-spacing:.02em}
@media (max-width:760px){
  .hero__inner{padding:76px 0 62px}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:22px 8px}
  .hero__cta .btn{flex:1 1 100%}
}

/* ---------- Grids / tarjetas ---------- */
.grid{display:grid;gap:26px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){.grid--3,.grid--4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid--2,.grid--3,.grid--4{grid-template-columns:1fr}}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px 28px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.card h3{margin-bottom:.4em}
.card p{color:var(--muted);margin:0;font-size:.98rem}
.card__icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#FFF1D6,#FFE0AC);margin-bottom:20px;
}
.card__icon svg{width:26px;height:26px;stroke:var(--sun-2);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.section--dark .card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12)}
.section--dark .card p{color:#A8BFD2}
.section--dark .card__icon{background:rgba(255,176,32,.16)}
.section--dark .card__icon svg{stroke:var(--sun)}

/* Servicios con foto */
.svc{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.svc:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.svc img{aspect-ratio:4/3;object-fit:cover;width:100%}
.svc__body{padding:26px 26px 30px}
.svc__body p{color:var(--muted);font-size:.97rem;margin:0}

/* ---------- Pasos ---------- */
.steps{counter-reset:s;display:grid;gap:2px;max-width:860px;margin:0 auto}
.step{display:flex;gap:24px;padding:26px 4px;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:0}
.step__n{
  flex:none;width:46px;height:46px;border-radius:50%;background:var(--ink);color:var(--sun);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.05rem;
}
.step h3{margin-bottom:.3em}
.step p{color:var(--muted);margin:0;font-size:.98rem}
@media (max-width:560px){.step{gap:16px;padding:22px 0}}

/* ---------- Split (texto + imagen) ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);aspect-ratio:4/3;object-fit:cover;width:100%}
@media (max-width:880px){.split{grid-template-columns:1fr;gap:34px}}
.checklist{list-style:none;padding:0;margin:26px 0 0}
.checklist li{position:relative;padding:0 0 14px 34px;color:var(--text)}
.checklist li::before{
  content:'';position:absolute;left:0;top:5px;width:20px;height:20px;border-radius:50%;
  background:var(--leaf) url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;
}

/* ---------- Galería ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gallery img{aspect-ratio:1/1;object-fit:cover;border-radius:var(--radius);transition:transform .3s var(--ease),filter .3s var(--ease)}
.gallery img:hover{transform:scale(1.03);filter:brightness(1.06)}
@media (max-width:760px){.gallery{grid-template-columns:repeat(2,1fr)}}

/* ---------- Formularios ---------- */
.formwrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:38px;box-shadow:var(--shadow);
}
.section--dark .formwrap{background:#fff}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
@media (max-width:640px){.form-grid{grid-template-columns:1fr}}
.field label{display:block;font-size:.86rem;font-weight:650;color:var(--ink-2);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:11px;
  font:inherit;font-size:.98rem;color:var(--text);background:#fff;
  transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.field textarea{min-height:128px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:0;border-color:var(--sun);box-shadow:0 0 0 4px rgba(255,176,32,.18);
}
.field .req{color:var(--sun-2)}
.form-note{font-size:.82rem;color:var(--muted);margin:14px 0 0}
.field .hint{font-size:.79rem;color:var(--muted);margin:6px 0 0}
.field-label{display:block;font-size:.86rem;font-weight:650;color:var(--ink-2);margin-bottom:8px}

/* Selector Residencial / Negocio */
.pills{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.pills label{position:relative;display:block;cursor:pointer}
/* Oculto a la vista pero navegable con teclado */
.pills input{position:absolute;width:1px;height:1px;margin:0;opacity:0;pointer-events:none}
.pills span{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 10px;border:1.5px solid var(--line);border-radius:11px;
  font-size:.95rem;font-weight:600;color:var(--muted);background:#fff;
  transition:all .16s var(--ease);text-align:center;
}
.pills span svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;flex:none}
.pills label:hover span{border-color:#C9D8E5;color:var(--ink-2)}
.pills input:checked + span{
  border-color:var(--sun);background:#FFF8EC;color:var(--ink);
  box-shadow:0 0 0 3px rgba(255,176,32,.16);
}
.pills input:focus-visible + span{outline:2px solid var(--sun-2);outline-offset:2px}

/* Campo de archivo (control propio, en español) */
.file{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.file input[type=file]{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.file__btn{
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;
  padding:11px 18px;border-radius:10px;background:var(--ink);color:#fff;
  font-size:.9rem;font-weight:650;transition:background .16s var(--ease);white-space:nowrap;
}
.file__btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.file__btn:hover{background:var(--ink-2)}
.file input[type=file]:focus-visible + .file__btn{outline:2px solid var(--sun-2);outline-offset:2px}
.file__name{font-size:.86rem;color:var(--muted);word-break:break-all;flex:1 1 140px}
.file__name.has{color:var(--leaf);font-weight:600}
.form-msg{display:none;padding:14px 16px;border-radius:11px;font-size:.95rem;margin-bottom:18px}
.form-msg.ok{display:block;background:#E6F7F0;color:#0A7051;border:1px solid #B6E8D5}
.form-msg.err{display:block;background:#FEECEC;color:#A32020;border:1px solid #F6C6C6}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}

/* ---------- Franja CTA ---------- */
.cta-band{background:linear-gradient(135deg,var(--sun),var(--sun-2));padding:62px 0}
.cta-band h2{color:#25190A;margin-bottom:.35em}
.cta-band p{color:#4A3608;font-size:1.08rem;max-width:56ch;margin:0 auto 26px}

/* ---------- Footer ---------- */
.footer{background:var(--bg-deep);color:#9FB6C8;padding:66px 0 0;font-size:.95rem}
.footer h4{color:#fff;font-size:.83rem;letter-spacing:.13em;text-transform:uppercase;margin:0 0 18px}
.footer a{color:#9FB6C8;text-decoration:none;transition:color .16s var(--ease)}
.footer a:hover{color:var(--sun)}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1.3fr;gap:44px}
@media (max-width:820px){.footer__grid{grid-template-columns:1fr;gap:34px}}
.footer .logo{color:#fff;margin-bottom:14px}
.footer ul{list-style:none;padding:0;margin:0}
.footer ul li{margin-bottom:11px}
.footer__bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:.86rem;
}

/* ---------- WhatsApp flotante ---------- */
.wa{
  position:fixed;right:20px;bottom:20px;z-index:950;width:58px;height:58px;border-radius:50%;
  background:#25D366;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 26px rgba(37,211,102,.42);transition:transform .2s var(--ease);
}
.wa:hover{transform:scale(1.08)}
.wa svg{width:31px;height:31px;fill:#fff}

/* ---------- Página legal ---------- */
.legal{max-width:800px;margin:0 auto}
.legal h2{margin-top:1.8em;font-size:1.5rem}
.legal h2:first-child{margin-top:0}

/* ---------- Animación de entrada ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .btn:hover,.card:hover,.svc:hover{transform:none}
}