/* ==========================================================================
   Reforestall — sistema visual base (construido desde cero)
   Paleta: bosque nativo. Tipografía: Fraunces (display) + Inter (texto)
   + Space Mono (datos/etiquetas).
   ========================================================================== */

:root{
  /* superficie oscura, de base "monte" */
  --forest-950:#141c0c;
  --forest-900:#1b2510;
  --forest-800:#232f16;
  --forest-700:#354220;

  /* acentos */
  --moss:#7C9152;
  --moss-light:#A7BD74;
  --amber:#C68A3D;
  --amber-light:#E0AE6B;
  --ice:#8FD4DE;      /* glaciar — uso puntual, no acento primario */
  --ice-deep:#3C8894;

  /* superficies claras */
  --paper:#F4F1E6;
  --paper-dim:#EAE5D3;
  --ink:#1D1B0F;
  --ink-dim:rgba(29,27,15,.64);

  --line-dark:rgba(244,241,230,.14);
  --line-light:rgba(29,27,15,.13);

  --radius-sm:6px;
  --radius-md:14px;
  --radius-lg:28px;

  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-nav:cubic-bezier(.45,.05,.55,.95);

  --font-display:'Fraunces',serif;
  --font-body:'Inter',-apple-system,sans-serif;
  --font-mono:'Space Mono',monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block;}
a{color:inherit;}
::selection{background:var(--moss-light);color:var(--forest-950);}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:500;
  letter-spacing:-.01em;
  line-height:1.08;
  margin:0;
  text-wrap:balance;
}
em{font-style:italic;}

p{margin:0;}

.wrap{max-width:1180px;margin:0 auto;padding:0 32px;}
@media(max-width:640px){.wrap{padding:0 20px;}}

.mono{font-family:var(--font-mono);}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--moss);
}
.eyebrow::before{content:'';width:22px;height:1px;background:currentColor;opacity:.7;}
.on-dark .eyebrow{color:var(--moss-light);}

/* ---------- botones ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-body);font-weight:600;font-size:14.5px;
  padding:14px 24px;border-radius:100px;border:1px solid transparent;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform .2s var(--ease-out), opacity .2s var(--ease-nav), background-color .2s var(--ease-nav), border-color .2s var(--ease-nav);
}
.btn:active{transform:scale(.97);}
.btn-solid{background:var(--amber);color:var(--forest-950);}
.btn-solid:hover{background:var(--amber-light);}
.btn-outline{background:transparent;border-color:var(--line-dark);color:var(--paper);}
.btn-outline:hover{border-color:rgba(244,241,230,.5);}
.on-light .btn-outline{border-color:var(--line-light);color:var(--ink);}
.on-light .btn-outline:hover{border-color:rgba(29,27,15,.4);}
.btn svg{width:15px;height:15px;transition:transform .2s var(--ease-nav);}
.btn:hover svg{transform:translateX(2px);}

/* ---------- nav ---------- */
.site-nav{
  position:sticky;top:0;z-index:100;
  background:rgba(244,241,230,.86);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-light);
}
.site-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;}
.nav-brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--font-display);font-size:19px;font-weight:600;color:var(--ink);}
.nav-brand .dot{width:9px;height:9px;border-radius:50%;background:var(--moss);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  text-decoration:none;font-size:14px;font-weight:500;color:var(--ink-dim);
  padding:9px 16px;border-radius:100px;transition:color .2s var(--ease-nav), background-color .2s var(--ease-nav);
}
.nav-links a:hover{color:var(--ink);background:rgba(29,27,15,.05);}
.nav-links a.active{color:var(--ink);background:var(--paper-dim);}
.nav-cta{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--ink);margin:5px 0;transition:transform .2s var(--ease-nav), opacity .2s var(--ease-nav);}

@media(max-width:860px){
  .nav-links{
    /* .site-nav tiene backdrop-filter, así que es el containing block de este
       fixed: "bottom:0" se resolvería contra sus 72px, no el viewport. Se fija
       la altura explícita en vh, que sí es siempre relativa al viewport. */
    position:fixed;top:72px;left:0;right:0;height:calc(100vh - 72px);height:calc(100dvh - 72px);
    background:var(--paper);overflow-y:auto;
    flex-direction:column;align-items:stretch;padding:18px 20px;gap:2px;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:transform .25s var(--ease-out), opacity .2s var(--ease-nav);
  }
  .nav-links a{padding:14px 8px;border-radius:8px;font-size:16px;}
  body.nav-open .nav-links{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-toggle{display:block;}
  body.nav-open .nav-toggle .l1{transform:translateY(6.5px) rotate(45deg);}
  body.nav-open .nav-toggle .l2{opacity:0;}
  body.nav-open .nav-toggle .l3{transform:translateY(-6.5px) rotate(-45deg);}
}

/* ---------- reveal-on-scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease-out), transform .7s var(--ease-out);}
.reveal.in{opacity:1;transform:translateY(0);}
.reveal-stagger > *{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease-out), transform .6s var(--ease-out);}
.reveal-stagger.in > *{opacity:1;transform:translateY(0);}
.reveal-stagger.in > *:nth-child(1){transition-delay:.02s;}
.reveal-stagger.in > *:nth-child(2){transition-delay:.09s;}
.reveal-stagger.in > *:nth-child(3){transition-delay:.16s;}
.reveal-stagger.in > *:nth-child(4){transition-delay:.23s;}
.reveal-stagger.in > *:nth-child(5){transition-delay:.30s;}
.reveal-stagger.in > *:nth-child(6){transition-delay:.37s;}

/* ---------- section rhythm ---------- */
section{padding:120px 0;}
section.tight{padding:80px 0;}
.on-dark{background:var(--forest-950);color:var(--paper);position:relative;isolation:isolate;}
.on-light{background:var(--paper);color:var(--ink);}
.on-panel{background:var(--paper-dim);color:var(--ink);}

/* textura sutil sobre fondos verde oscuro sólido, para que no queden planos.
   overlay casi no se nota sobre un verde tan oscuro (efecto débil cerca de
   los extremos), así que va con opacity más alta que en un fondo claro. */
.on-dark::before, footer::before{
  content:'';position:absolute;inset:0;z-index:-1;pointer-events:none;
  opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%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");
}
footer{position:relative;isolation:isolate;}

.section-head{max-width:640px;}
.section-head h2{font-size:clamp(28px,3.6vw,42px);}
.section-head p{margin-top:18px;font-size:16.5px;line-height:1.65;color:var(--ink-dim);}
.on-dark .section-head p{color:rgba(244,241,230,.68);}

.hairline{border-top:1px solid var(--line-light);}
.on-dark .hairline{border-top:1px solid var(--line-dark);}

/* ---------- footer ---------- */
footer{background:var(--forest-950);color:rgba(244,241,230,.7);padding:64px 0 40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{font-family:var(--font-display);font-size:20px;color:var(--paper);}
.footer-col h4{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:rgba(244,241,230,.45);margin-bottom:14px;font-weight:400;}
.footer-col a{display:block;text-decoration:none;font-size:14px;color:rgba(244,241,230,.75);padding:6px 0;transition:color .2s var(--ease-nav);}
.footer-col a:hover{color:var(--paper);}
.footer-bottom{margin-top:56px;padding-top:24px;border-top:1px solid var(--line-dark);display:flex;justify-content:space-between;font-size:12.5px;color:rgba(244,241,230,.4);flex-wrap:wrap;gap:10px;font-family:var(--font-mono);}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr 1fr;}}