/* =====================================================================
   Fundación Caburgua Sustentable — Sistema visual "Editorial Naturaleza"
   Hoja de estilos compartida · v2 (contenido oficial + contraste corregido)
   ===================================================================== */
:root{
  --azul-lago:#1B4D6B;
  --azul-lago-2:#123a52;
  --azul-cielo:#5FA8D3;
  --verde:#A6C53A;
  --verde-osc:#5f7d18;      /* verde legible sobre fondos claros */
  --terracota:#c97b4a;
  --tinta:#16323f;
  --gris:#566169;
  --hueso:#f6f4ee;
  --linea:#e6e2d6;
  --blanco:#ffffff;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Helvetica Neue",Arial,system-ui,sans-serif;color:var(--tinta);background:var(--hueso);line-height:1.6;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
.eyebrow{color:var(--verde-osc);font-weight:700;letter-spacing:.20em;text-transform:uppercase;font-size:12px}

/* ---------- Botones ---------- */
.btn{display:inline-block;background:var(--verde);color:#243000;font-weight:800;letter-spacing:.08em;
  text-transform:uppercase;font-size:12px;padding:13px 24px;border-radius:40px;transition:transform .2s, background .2s;border:none;cursor:pointer}
.btn:hover{transform:translateY(-2px)}
.btn-azul{background:var(--azul-lago);color:#fff}
.btn-azul:hover{background:var(--azul-lago-2)}
.btn-ghost{background:transparent;border:1.6px solid rgba(255,255,255,.85);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}

/* ---------- NAV (siempre sólido, logo azul) ---------- */
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--linea)}
nav{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;max-width:1180px;margin:0 auto}
nav .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:.12em;font-size:12px;color:var(--azul-lago)}
nav .brand img{height:50px;width:auto}
nav ul{display:flex;gap:26px;list-style:none;align-items:center}
nav ul a{font-size:13px;letter-spacing:.04em;color:var(--gris);transition:color .2s}
nav ul a:hover{color:var(--azul-lago)}
nav ul a.active{color:var(--azul-lago);font-weight:700}
.menu-btn{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--azul-lago)}

/* ---------- HERO con carrusel + degradado ---------- */
.hero{position:relative;min-height:86vh;display:flex;align-items:center;overflow:hidden;color:#fff;background:var(--azul-lago-2)}
.hero-slides{position:absolute;inset:0;z-index:0}
.hero-slides .slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;
  transform:scale(1.06);transition:opacity 1.4s ease, transform 7s ease;will-change:opacity,transform;filter:brightness(.78) saturate(1.05)}
.hero-slides .slide.active{opacity:1;transform:scale(1)}
.hero-grad{position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(180deg, rgba(11,40,56,.74) 0%, rgba(11,40,56,.58) 45%, rgba(11,40,56,.94) 100%),
    linear-gradient(90deg, rgba(11,40,56,.82) 0%, rgba(11,40,56,.45) 50%, rgba(11,40,56,.10) 100%)}
.hero .wrap{position:relative;z-index:2;width:100%;padding-top:60px;padding-bottom:60px}
.tag{display:inline-block;background:var(--verde);color:#243000;font-weight:800;
  letter-spacing:.14em;text-transform:uppercase;font-size:11px;padding:8px 16px;border-radius:30px;margin-bottom:22px}
.hero h1{font-size:clamp(34px,5.4vw,66px);line-height:1.05;font-weight:300;max-width:16ch;letter-spacing:-.01em;text-shadow:0 2px 30px rgba(0,0,0,.25)}
.hero h1 b{font-weight:800}
.hero p{margin-top:22px;font-size:clamp(16px,1.6vw,20px);max-width:50ch;opacity:.96;font-weight:300;text-shadow:0 1px 16px rgba(0,0,0,.3)}
.hero .cta-row{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.hero-dots{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:3;display:flex;gap:10px}
.hero-dots button{width:9px;height:9px;border-radius:50%;border:none;background:rgba(255,255,255,.45);cursor:pointer;padding:0;transition:background .2s,width .2s}
.hero-dots button.active{background:var(--verde);width:26px;border-radius:6px}

/* ---------- HERO de páginas internas ---------- */
.page-hero{position:relative;color:#fff;padding:110px 0 64px;
  background:linear-gradient(180deg, rgba(13,40,56,.62), rgba(13,40,56,.82)), var(--ph,radial-gradient(120% 120% at 70% 0%, #2f7aa6, #123a52));
  background-size:cover;background-position:center}
.page-hero .eyebrow{color:var(--verde)}
.page-hero h1{font-size:clamp(32px,4.6vw,52px);font-weight:300;margin-top:14px;max-width:20ch;line-height:1.08}
.page-hero h1 b{font-weight:800}
.page-hero p{margin-top:18px;max-width:56ch;opacity:.95;font-size:18px;font-weight:300}
.crumbs{font-size:12px;letter-spacing:.1em;text-transform:uppercase;opacity:.85;margin-bottom:18px}
.crumbs a:hover{color:var(--verde)}

/* ---------- Secciones genéricas ---------- */
.section{padding:88px 0}
.section.tight{padding:58px 0}
.section-head{max-width:64ch}
.section-head.center{text-align:center;margin:0 auto}
.section h2{font-size:clamp(26px,3.4vw,40px);font-weight:300;margin-top:14px;line-height:1.18;color:var(--tinta)}
.section h2 b{font-weight:700;color:var(--azul-lago)}
.section .lead{margin-top:20px;color:var(--gris);font-size:17px}
.prose p{color:var(--gris);font-size:17px;margin-top:18px;max-width:68ch}
.prose p b{color:var(--tinta)}
.prose .destacado{border-left:4px solid var(--verde);padding:6px 0 6px 22px;margin-top:24px;font-size:19px;color:var(--azul-lago);max-width:60ch}

/* ---------- Tarjetas (ejes / valores) ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{background:#fff;border-radius:18px;padding:36px 30px;box-shadow:0 18px 50px -30px rgba(20,60,90,.45);
  border-top:5px solid var(--c,var(--azul-cielo));transition:transform .25s, box-shadow .25s}
.card:hover{transform:translateY(-6px);box-shadow:0 28px 60px -28px rgba(20,60,90,.5)}
.card .ico{width:64px;height:64px;border-radius:16px;display:grid;place-items:center;
  background:color-mix(in srgb,var(--c,var(--azul-cielo)) 14%,#fff);margin-bottom:20px;overflow:hidden}
.card .ico img{width:42px;height:42px;object-fit:contain}
.card .ico.emoji{font-size:28px}
.card .kicker{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--c,var(--azul-cielo));font-weight:800;margin-bottom:8px}
.card h3{font-size:21px;color:var(--azul-lago);letter-spacing:.01em}
.card p{margin-top:12px;color:var(--gris);font-size:15px}
.card ul{margin-top:14px;padding-left:0;list-style:none}
.card ul li{position:relative;padding-left:20px;color:var(--gris);font-size:14px;margin-top:8px}
.card ul li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:var(--c,var(--azul-cielo))}
.card .link{display:inline-block;margin-top:18px;color:var(--c,var(--azul-cielo));font-weight:800;font-size:13px;letter-spacing:.04em;text-transform:uppercase}

/* ---------- Bloque destacado con foto ---------- */
.feature{display:grid;grid-template-columns:1.05fr 1fr;align-items:stretch;background:var(--azul-lago);color:#fff;border-radius:22px;overflow:hidden;margin-bottom:30px}
.feature.invert{grid-template-columns:1fr 1.05fr}
.feature .ph{min-height:380px;background-size:cover;background-position:center}
.feature .txt{padding:54px 48px}
.feature .eyebrow{color:#cfe89a}
.feature h3{font-size:clamp(24px,2.8vw,34px);font-weight:300;margin-top:14px;line-height:1.2}
.feature h3 b{font-weight:800}
.feature p{margin-top:18px;opacity:.94;font-size:16px;max-width:44ch}
.feature .link{display:inline-flex;align-items:center;gap:8px;margin-top:26px;color:#fff;font-weight:800;letter-spacing:.04em;text-transform:uppercase;font-size:13px;border-bottom:2px solid var(--verde);padding-bottom:3px}
.feature .acts{list-style:none;margin-top:24px;display:grid;gap:11px;max-width:46ch}
.feature .acts li{position:relative;padding-left:28px;font-size:15.5px;opacity:.96;line-height:1.45}
.feature .acts li::before{content:"";position:absolute;left:0;top:7px;width:13px;height:13px;border-radius:50%;
  background:var(--verde);box-shadow:0 0 0 4px rgba(166,197,58,.18)}
.feature .acts li b{font-weight:800}

/* ---------- Franja de datos ---------- */
.strip{background:#fff;border-top:1px solid var(--linea);border-bottom:1px solid var(--linea)}
.strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.strip .it{padding:42px 18px;border-right:1px solid var(--linea)}
.strip .it:last-child{border-right:none}
.strip .n{font-size:42px;color:var(--azul-lago);font-weight:300}
.strip .n b{color:var(--verde-osc);font-weight:400}
.strip .l{font-size:12px;letter-spacing:.10em;text-transform:uppercase;color:var(--gris);margin-top:6px}

/* ---------- Grilla de proyectos ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.proj{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 16px 44px -30px rgba(20,60,90,.5);
  display:flex;flex-direction:column;transition:transform .25s, box-shadow .25s}
.proj:hover{transform:translateY(-5px);box-shadow:0 26px 56px -28px rgba(20,60,90,.55)}
.proj .img{height:200px;background-size:cover;background-position:center;position:relative}
.proj .img.solid{background:radial-gradient(120% 120% at 60% 10%, #79b6dc, #14506f)}
.proj .pill{position:absolute;top:14px;left:14px;font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  font-weight:800;padding:6px 12px;border-radius:30px;color:#fff;background:var(--c,var(--azul-lago))}
.proj .body{padding:24px 24px 28px;flex:1;display:flex;flex-direction:column}
.proj .date{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--gris)}
.proj h3{font-size:19px;color:var(--azul-lago);margin-top:8px;line-height:1.25}
.proj p{margin-top:10px;color:var(--gris);font-size:14px;flex:1}

/* ---------- Directorio ---------- */
.board{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px}
.member{background:#fff;border:1px solid var(--linea);border-radius:14px;padding:26px 22px;text-align:center}
.member .av{width:58px;height:58px;border-radius:50%;margin:0 auto 14px;display:grid;place-items:center;
  background:color-mix(in srgb,var(--azul-cielo) 18%,#fff);font-size:22px;color:var(--azul-lago);font-weight:700}
.member .nm{font-weight:700;color:var(--tinta);font-size:15px;line-height:1.3}
.member .rl{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--verde-osc);font-weight:700;margin-top:6px}

/* ---------- Aliados (logos) ---------- */
.partners{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px;align-items:center}
.partner{background:#fff;border:1px solid var(--linea);border-radius:14px;height:130px;display:grid;place-items:center;padding:22px;transition:box-shadow .2s}
.partner:hover{box-shadow:0 16px 40px -28px rgba(20,60,90,.5)}
.partner img{max-height:80px;max-width:100%;object-fit:contain;filter:saturate(.95)}

/* ---------- Equipo / cita ---------- */
.quote{background:var(--azul-lago);color:#fff;border-radius:22px;padding:62px 50px;text-align:center}
.quote p{font-size:clamp(20px,2.6vw,30px);font-weight:300;line-height:1.35;max-width:26ch;margin:0 auto}
.quote p b{font-weight:700;color:var(--verde)}
.quote .who{margin-top:24px;font-size:13px;letter-spacing:.12em;text-transform:uppercase;opacity:.85}

/* ---------- Documentos ---------- */
.doc-list{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:36px}
.doc-item{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--linea);border-radius:14px;
  padding:22px 24px;transition:transform .2s, box-shadow .2s}
.doc-item:hover{transform:translateY(-3px);box-shadow:0 18px 44px -30px rgba(20,60,90,.5)}
.doc-item .fi{width:46px;height:54px;flex:none;border-radius:7px;background:var(--azul-lago);color:#fff;
  display:grid;place-items:center;font-size:10px;font-weight:800;letter-spacing:.05em;position:relative}
.doc-item .fi.ext{background:var(--terracota)}
.doc-item .meta{flex:1}
.doc-item .ti{font-weight:700;color:var(--tinta);font-size:15px;line-height:1.35}
.doc-item .sb{font-size:12px;color:var(--gris);margin-top:4px;letter-spacing:.04em;text-transform:uppercase}
.doc-item .dl{flex:none;color:var(--azul-lago);font-weight:800;font-size:12px;letter-spacing:.06em;text-transform:uppercase;border:1.5px solid var(--linea);border-radius:30px;padding:9px 16px;transition:.2s}
.doc-item:hover .dl{background:var(--azul-lago);color:#fff;border-color:var(--azul-lago)}

/* ---------- Videos (póster clickeable a YouTube) ---------- */
.video-feature{max-width:820px;margin:36px auto 0;background:#fff;border:1px solid var(--linea);border-radius:18px;overflow:hidden;box-shadow:0 22px 60px -34px rgba(20,60,90,.55)}
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
.video{background:#fff;border:1px solid var(--linea);border-radius:14px;overflow:hidden}
.video .poster{position:relative;display:block;aspect-ratio:16/9;background-size:cover;background-position:center;background-color:#11303f}
.video .poster .play{position:absolute;inset:0;display:grid;place-items:center;
  background:linear-gradient(180deg,rgba(11,40,56,.06),rgba(11,40,56,.40));transition:background .2s}
.video .poster:hover .play{background:rgba(11,40,56,.50)}
.video .poster .play i{width:70px;height:70px;border-radius:50%;background:rgba(166,197,58,.96);
  display:grid;place-items:center;box-shadow:0 12px 32px rgba(0,0,0,.4);transition:transform .2s}
.video .poster:hover .play i{transform:scale(1.09)}
.video .poster .play i::before{content:"";border-style:solid;border-width:12px 0 12px 19px;
  border-color:transparent transparent transparent #1b2b00;margin-left:5px}
.video .poster .badge{position:absolute;top:12px;left:12px;z-index:2;background:rgba(255,255,255,.92);
  color:#c00;font-weight:800;font-size:11px;letter-spacing:.06em;padding:5px 10px;border-radius:6px}
.video .cap{padding:18px 22px}
.video .cap .ti{font-weight:700;color:var(--tinta);font-size:16px;line-height:1.35}
.video .cap .sb{font-size:12px;color:var(--gris);margin-top:4px}

/* ---------- CTA donar ---------- */
.donate{text-align:center;color:#fff;border-radius:22px;padding:70px 30px;
  background:linear-gradient(0deg,rgba(13,40,56,.78),rgba(13,40,56,.78)),
  radial-gradient(120% 120% at 50% 0%, #5FA8D3, #123a52)}
.donate h2{font-size:clamp(26px,3.4vw,40px);font-weight:300;line-height:1.18;color:#fff}
.donate h2 b{font-weight:800;color:var(--verde)}
.donate p{margin:18px auto 30px;max-width:50ch;opacity:.95}
.donate .cta-row{justify-content:center;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Contacto ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:50px;align-items:start}
.info-row{display:flex;gap:16px;align-items:flex-start;margin-bottom:24px}
.info-row .ic{width:46px;height:46px;border-radius:12px;background:color-mix(in srgb,var(--azul-cielo) 16%,#fff);display:grid;place-items:center;font-size:20px;flex:none}
.info-row .lb{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--verde-osc);font-weight:800}
.info-row .vl{font-size:17px;color:var(--tinta);margin-top:3px}
.form{background:#fff;border-radius:18px;padding:36px;box-shadow:0 18px 50px -30px rgba(20,60,90,.45)}
.form label{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--gris);margin:18px 0 7px;font-weight:700}
.form input,.form textarea{width:100%;border:1px solid var(--linea);border-radius:10px;padding:13px 14px;font-size:15px;font-family:inherit;background:var(--hueso);color:var(--tinta)}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--azul-cielo)}
.form textarea{min-height:120px;resize:vertical}
.form .btn{margin-top:24px;width:100%}

/* ---------- FOOTER ---------- */
.site-footer{background:var(--tinta);color:#cfdbe1;padding:62px 0 30px;font-size:14px}
.site-footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;align-items:start}
.site-footer img{height:62px;margin-bottom:16px}
.site-footer h4{color:#fff;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px}
.site-footer a{display:block;opacity:.82;margin-bottom:9px}
.site-footer a:hover{opacity:1;color:var(--verde)}
.site-footer .muted{opacity:.82;max-width:34ch}
.site-footer .bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:46px;padding-top:22px;
  display:flex;justify-content:space-between;opacity:.65;font-size:12px;flex-wrap:wrap;gap:8px}

/* ---------- Responsive ---------- */
@media(max-width:880px){
  nav ul{position:fixed;inset:0 0 0 auto;width:76%;max-width:320px;background:#fff;flex-direction:column;
    align-items:flex-start;gap:4px;padding:88px 28px;transform:translateX(100%);transition:transform .3s;box-shadow:-20px 0 60px -30px rgba(0,0,0,.4)}
  nav ul.open{transform:translateX(0)}
  nav ul a{color:var(--tinta);font-size:16px;padding:12px 0;width:100%;border-bottom:1px solid var(--linea)}
  .menu-btn{display:block}
  .grid3,.proj-grid,.video-grid{grid-template-columns:1fr}
  .feature,.feature.invert{grid-template-columns:1fr}
  .feature .ph{min-height:240px;order:-1}
  .strip .wrap{grid-template-columns:1fr 1fr}
  .strip .it:nth-child(2){border-right:none}
  .board{grid-template-columns:1fr 1fr}
  .partners{grid-template-columns:1fr 1fr}
  .doc-list{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:34px}
  .site-footer .cols{grid-template-columns:1fr 1fr}
}