/* ===================================================================
   Laperuta & Asociados — VARIANTE 3 "Contraste oscuro"
   verde casi negro + gris cálido + grano + hairlines tipo ledger
   =================================================================== */
@font-face { font-family:"DM Sans"; src:url("assets/fonts/DMSans.ttf") format("truetype"); font-weight:100 900; font-display:swap; }
@font-face { font-family:"DM Sans"; src:url("assets/fonts/DMSans-Italic.ttf") format("truetype"); font-weight:100 900; font-style:italic; font-display:swap; }

:root{
  --green:#1f3832; --green-700:#2a4a42;
  --ink-deep:#14201c;       /* verde casi negro */
  --ink-deep-2:#101a16;
  --cream:#f6f3ed; --cream-2:#efeae1; --white:#fffdf9;
  --sage:#bdcbc5; --muted:#6d807b; --muted-warm:#8a948f;
  --line-light:#dcd8cf; --line-dark:rgba(189,203,197,.16);
  --container:1140px; --radius:16px; --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-md:0 2px 6px rgba(0,0,0,.18),0 24px 60px rgba(0,0,0,.28);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{font-family:"DM Sans",system-ui,sans-serif;background:var(--ink-deep);color:var(--cream);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-inline:clamp(20px,5vw,48px)}
.container-narrow{max-width:800px}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}

h1,h2,h3{font-weight:600;line-height:1.08;letter-spacing:-.02em}
h2{font-size:clamp(2rem,4.4vw,3.2rem)}
h3{font-size:1.3rem;letter-spacing:-.01em}
.eyebrow{text-transform:uppercase;letter-spacing:.2em;font-size:.72rem;font-weight:600;color:var(--sage);margin-bottom:1.1rem}

/* grano global sutil */
.grain{position:absolute;inset:0;pointer-events:none;z-index:1;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;background:var(--cream);color:var(--ink-deep);padding:.9em 1.7em;border-radius:999px;font-weight:600;font-size:1rem;border:1px solid var(--cream);cursor:pointer;transition:transform .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease)}
.btn:hover{background:var(--white);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-sm{padding:.6em 1.2em;font-size:.92rem}
.btn-light{background:var(--cream);color:var(--ink-deep);border-color:var(--cream)}
.btn-light:hover{background:var(--white)}
.btn-ghost{background:transparent;color:var(--cream);border-color:rgba(246,243,237,.4)}
.btn-ghost:hover{background:rgba(246,243,237,.08);border-color:var(--cream)}
.btn-wa{background:var(--green);color:var(--cream);border-color:var(--green)}
.btn-wa:hover{background:var(--green-700);border-color:var(--green-700)}
.btn-wa svg{width:21px;height:21px;flex:none}

/* Header (oscuro translúcido) */
.site-header{position:sticky;top:0;z-index:100;background:rgba(20,32,28,.72);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid transparent;transition:border-color .3s var(--ease),background .3s var(--ease)}
.site-header.scrolled{border-bottom-color:var(--line-dark);background:rgba(16,26,22,.86)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:inline-flex;align-items:center;gap:.6rem;color:var(--cream)}
.brand-iso{width:26px;height:auto;fill:currentColor;flex:none}
.brand-name{font-size:1.02rem;font-weight:500;letter-spacing:-.01em;color:var(--cream)}
.nav{display:flex;align-items:center;gap:clamp(1rem,2.2vw,2.1rem)}
.nav>a:not(.btn){font-size:.96rem;color:var(--cream);font-weight:500;position:relative;padding:.2em 0;transition:color .25s var(--ease)}
.nav>a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1.5px;background:var(--sage);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav>a:not(.btn):hover{color:var(--sage)}
.nav>a:not(.btn):hover::after{transform:scaleX(1)}
.nav .btn{background:var(--cream);color:var(--ink-deep);border-color:var(--cream)}
.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(--cream);border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--ease)}
.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 oscuro */
.hero{position:relative;overflow:hidden;background:radial-gradient(120% 120% at 70% 0,#1c2c27 0,var(--ink-deep) 55%,var(--ink-deep-2) 100%);padding:clamp(5rem,12vw,9rem) 0 clamp(4rem,9vw,7rem);text-align:center}
.hero-watermark{position:absolute;right:-6%;top:50%;transform:translateY(-50%);width:clamp(360px,46vw,720px);fill:none;stroke:rgba(189,203,197,.10);stroke-width:1.5;z-index:0}
.hero-inner{position:relative;z-index:2;max-width:880px;margin:0 auto;display:flex;flex-direction:column;align-items:center}
.hero-logo{width:min(640px,86%);height:auto;margin:.4rem 0 1.8rem}
.hero-lead{font-size:clamp(1.05rem,1.7vw,1.28rem);color:var(--sage);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:2.2rem;justify-content:center}

/* Secciones: dark / light */
.section{padding:clamp(4rem,9vw,7.5rem) 0;position:relative}
.section-light{background:var(--cream);color:var(--green)}
.section-dark{background:var(--ink-deep);color:var(--cream)}
.section-dark .eyebrow{color:var(--sage)}
.section-light .eyebrow{color:var(--muted)}
.section-head{max-width:760px;margin:0 auto clamp(2.5rem,5vw,4rem);text-align:center}
.section-head h2{margin-bottom:.5em}
.section-light .section-sub{color:var(--green-700)}
.section-dark .section-sub{color:var(--sage)}
.section-sub,.contact-lead{font-size:1.1rem}
.prose{max-width:720px;margin:0 auto clamp(2.8rem,6vw,4.5rem);text-align:center}
.section-light .prose p{font-size:1.18rem;color:var(--green-700)}

/* hairlines tipo ledger en sección oscura de servicios */
.ledger::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(to bottom,transparent 0,transparent 37px,rgba(189,203,197,.05) 37px,rgba(189,203,197,.05) 38px);
  mask-image:linear-gradient(to bottom,transparent,#000 12%,#000 88%,transparent);}
.ledger>.container{position:relative;z-index:1}

/* Pilares (sección clara) */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line-light)}
.pillar{padding:clamp(1.8rem,3vw,2.6rem) clamp(1.2rem,2.4vw,2rem);border-bottom:1px solid var(--line-light);border-right:1px solid var(--line-light);transition:background .3s var(--ease);text-align:center;display:flex;flex-direction:column;align-items:center}
.pillar:nth-child(3n){border-right:0}
.pillar:hover{background:var(--white)}
.pillar-icon{width:52px;height:52px;display:grid;place-items:center;border-radius:50%;background:rgba(31,56,50,.06);color:var(--green);margin:0 auto .4rem}
.pillar-icon svg{width:28px;height:28px}
.pillar h3{margin:.7em 0 .4em;color:var(--green)}
.pillar p{color:var(--green-700);font-size:1rem}

/* Servicios (tarjetas sobre oscuro) */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1rem,2.4vw,1.8rem);align-items:stretch;text-align:left}
.service-card{display:flex;flex-direction:column;background:linear-gradient(165deg,#22322c 0%,#1a2823 100%);border:1px solid rgba(189,203,197,.14);border-radius:var(--radius);padding:clamp(1.8rem,3vw,2.6rem);box-shadow:0 12px 34px rgba(0,0,0,.30),inset 0 1px 0 rgba(246,243,237,.06);transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease)}
.service-card:hover{transform:translateY(-5px);border-color:rgba(189,203,197,.30);box-shadow:0 22px 56px rgba(0,0,0,.40),inset 0 1px 0 rgba(246,243,237,.08)}
.service-icon{width:58px;height:58px;display:grid;place-items:center;border-radius:50%;background:rgba(189,203,197,.12);color:var(--sage);margin-bottom:1.4rem}
.service-icon svg{width:30px;height:30px}
.service-card h3{margin-bottom:1.1rem;color:var(--white)}
.service-list{list-style:none;display:flex;flex-direction:column;gap:.7rem}
.service-list li{position:relative;padding-left:1.7rem;font-size:.98rem;color:var(--sage)}
.service-list li::before{content:"";position:absolute;left:0;top:.42em;width:9px;height:5px;border-left:2px solid var(--sage);border-bottom:2px solid var(--sage);transform:rotate(-45deg)}
.service-list li.extra{display:none}
.service-card.expanded .service-list li.extra{display:block;animation:fadeUp .4s var(--ease) forwards}
.link-more{margin-top:auto;padding-top:1.5rem;align-self:flex-start;background:none;border:0;cursor:pointer;color:var(--cream);font-weight:600;font-size:.95rem;font-family:inherit;display:inline-flex;align-items:center;gap:.4em;transition:gap .25s var(--ease),color .25s var(--ease)}
.link-more::after{content:"↓";transition:transform .3s var(--ease)}
.link-more:hover{color:var(--sage)}
.service-card.expanded .link-more::after{transform:rotate(180deg)}

/* Opiniones (sección clara) */
.testimonials{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1rem,2.4vw,1.8rem);text-align:left}
.testimonial{background:var(--white);border:1px solid var(--line-light);border-radius:var(--radius);padding:clamp(1.8rem,3vw,2.4rem);display:flex;flex-direction:column;gap:1.3rem}
.testimonial-stars{display:flex;gap:3px;color:var(--sage)}
.testimonial-stars svg{width:18px;height:18px}
.testimonial blockquote{font-size:1.08rem;line-height:1.5;color:var(--green)}
.testimonial figcaption{font-size:.9rem;font-weight:600;color:var(--muted);margin-top:auto}

/* FAQ (sección oscura) */
.faq{display:flex;flex-direction:column;gap:.8rem;text-align:left}
.faq-item{background:rgba(246,243,237,.04);border:1px solid var(--line-dark);border-radius:var(--radius);overflow:hidden}
.faq-item[open]{background:rgba(246,243,237,.06)}
.faq-item summary{list-style:none;cursor:pointer;padding:1.3rem 1.6rem;font-weight:600;font-size:1.08rem;color:var(--cream);display:flex;align-items:center;justify-content:space-between;gap:1rem}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.5rem;font-weight:400;color:var(--sage);transition:transform .3s var(--ease);flex:none}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 1.6rem 1.5rem}
.faq-body p{color:var(--sage)}

/* Contacto (acento claro invertido) */
.section-contact{background:var(--cream);color:var(--green)}
.section-contact .eyebrow{color:var(--muted)}
.section-contact h2{color:var(--green)}
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(2.5rem,6vw,5rem);align-items:center;text-align:left}
.contact-text h2{margin-bottom:.6em}
.contact-lead{color:var(--green-700);margin-bottom:2rem}
.contact-links{list-style:none;display:flex;flex-direction:column}
.contact-links li{border-top:1px solid var(--line-light)}
.contact-links li:last-child{border-bottom:1px solid var(--line-light)}
.contact-links a{display:flex;flex-direction:column;gap:.2rem;padding:1.25rem 0;transition:padding-left .3s var(--ease),color .3s var(--ease)}
.contact-links a:hover{padding-left:.6rem;color:var(--muted)}
.cl-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.16em;color:var(--muted)}
.cl-value{font-size:1.15rem;font-weight:500}

/* Footer (oscuro) */
.site-footer{background:var(--ink-deep-2);padding:clamp(2.8rem,5vw,4rem) 0 2rem;border-top:1px solid var(--line-dark)}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.5rem 2rem;padding-bottom:2rem;border-bottom:1px solid var(--line-dark)}
.brand-footer{color:var(--cream)}
.brand-footer .brand-name{color:var(--cream)}
.footer-nav,.footer-social{display:flex;flex-wrap:wrap;gap:1.2rem}
.footer-nav a,.footer-social a{font-size:.95rem;color:var(--sage);transition:color .25s var(--ease)}
.footer-nav a:hover,.footer-social a:hover{color:var(--cream)}
.footer-social a{font-weight:600}
.footer-legal{padding-top:1.6rem}
.footer-legal p{font-size:.82rem;color:var(--muted-warm)}

/* Reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal:nth-child(2){transition-delay:.06s}
.reveal:nth-child(3){transition-delay:.12s}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}

/* Responsive */
@media (max-width:900px){.pillars,.services,.testimonials{grid-template-columns:1fr}.pillar{border-right:0}.contact-grid{grid-template-columns:1fr;align-items:start}.hero-watermark{opacity:.6}}
@media (max-width:560px){ .br-md{display:none} }
@media (max-width:720px){
  body{font-size:16px}
  .nav{position:fixed;inset:70px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:var(--ink-deep);border-bottom:1px solid var(--line-dark);padding:.5rem clamp(20px,5vw,48px) 1.4rem;transform:translateY(-12px);opacity:0;pointer-events:none;transition:transform .3s var(--ease),opacity .3s var(--ease);box-shadow:var(--shadow-md)}
  .nav.open{transform:none;opacity:1;pointer-events:auto}
  .nav>a:not(.btn){padding:.9rem 0;border-bottom:1px solid var(--line-dark)}
  .nav>a:not(.btn)::after{display:none}
  .nav-cta{margin-top:1rem}
  .nav-toggle{display:flex}
  .hero-watermark{display:none}
  .footer-inner{flex-direction:column;align-items:flex-start}
}