/* iagest — landing. Sistema de 3 temas por variables CSS.
   Tema por defecto: Hueso (claro). Otros: Tinta (oscuro), Esmeralda. */

:root,
html[data-theme="bone"]{
  --bg:#F7F5EF; --surface:#FFFFFF; --ink:#15212B; --muted:#5C6671;
  --border:#E7E3D9; --accent:#0E7C66; --accent-strong:#0B6553; --accent-2:#CC8A2C;
  --on-accent:#FFFFFF;
  --shadow-card:0 24px 50px -28px rgba(21,33,43,.55);
  --shadow-soft:0 12px 30px -20px rgba(21,33,43,.45);
}
html[data-theme="ink"]{
  --bg:#0F1A24; --surface:#16242F; --ink:#EAF1F4; --muted:#9DB0BC;
  --border:#26384A; --accent:#34C3A3; --accent-strong:#2BB89A; --accent-2:#F0B454;
  --on-accent:#07221C;
  --shadow-card:0 26px 54px -26px rgba(0,0,0,.6);
  --shadow-soft:0 14px 34px -20px rgba(0,0,0,.5);
}
html[data-theme="emerald"]{
  --bg:#06231F; --surface:#0B2E28; --ink:#F1EDE1; --muted:#9FC3B5;
  --border:#154A40; --accent:#45CEAC; --accent-strong:#34C3A3; --accent-2:#ECB45A;
  --on-accent:#06231F;
  --shadow-card:0 26px 54px -26px rgba(0,0,0,.55);
  --shadow-soft:0 14px 34px -20px rgba(0,0,0,.45);
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Hanken Grotesk', system-ui, sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .4s ease, color .4s ease;
}
.serif{font-family:'Fraunces', Georgia, serif;}
a{color:inherit; text-decoration:none;}
em{font-style:italic; color:var(--accent);}

.kicker{
  font-size:.76rem; font-weight:600; letter-spacing:.22em; text-transform:uppercase;
  color:var(--accent); margin-bottom:14px;
}

/* ---- Botones ---- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  font-weight:600; font-size:.95rem; border-radius:999px; padding:11px 24px;
  border:1.5px solid transparent; cursor:pointer; transition:transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn-lg{padding:15px 34px; font-size:1.02rem;}
.btn-primary{background:var(--accent); color:var(--on-accent); box-shadow:var(--shadow-soft);}
.btn-primary:hover{background:var(--accent-strong); transform:translateY(-2px);}
.btn-ghost{background:transparent; color:var(--ink); border-color:var(--border);}
.btn-ghost:hover{border-color:var(--accent); color:var(--accent); transform:translateY(-2px);}

/* ---- Header ---- */
.site-head{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; justify-content:space-between;
  padding:18px clamp(20px,5vw,64px);
  background:color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.brand{display:inline-flex; align-items:center; gap:.4em; cursor:pointer; user-select:none; font-size:1.55rem;}
.wordmark{font-family:'Fraunces',Georgia,serif; font-weight:600; letter-spacing:-.035em; line-height:1;}
.wordmark .ia{color:var(--accent);}
.wordmark .gest{color:var(--ink);}
.mark{width:1em; height:1em; color:var(--accent); display:block;}

/* ---- Layout base ---- */
main{display:block;}
.section{max-width:1080px; margin:0 auto; padding:clamp(64px,9vw,120px) clamp(20px,5vw,64px);}
.section-title{font-family:'Fraunces',Georgia,serif; font-weight:600; letter-spacing:-.02em;
  font-size:clamp(1.7rem,3.6vw,2.6rem); line-height:1.12; margin-bottom:18px;}

/* ---- Hero ---- */
.hero{position:relative; overflow:hidden; padding:clamp(70px,12vw,150px) clamp(20px,5vw,64px) clamp(60px,9vw,110px);}
.hero-inner{max-width:1080px; margin:0 auto; position:relative; z-index:2;}
.hero-glow{
  position:absolute; inset:auto auto -30% -10%; width:70vw; height:70vw; max-width:900px; max-height:900px;
  background:radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 60%);
  z-index:1; pointer-events:none; filter:blur(8px);
}
.hero h1{font-family:'Fraunces',Georgia,serif; font-weight:600; letter-spacing:-.025em;
  font-size:clamp(2.5rem,6.4vw,5rem); line-height:1.04; max-width:18ch;}
.hero .sub{font-size:clamp(1.05rem,1.8vw,1.32rem); color:var(--muted); max-width:60ch; margin:24px 0 34px;}
.cta{display:flex; gap:14px; flex-wrap:wrap;}

/* ---- Cards "qué hace" ---- */
.cards{display:grid; grid-template-columns:repeat(auto-fit,minmax(258px,1fr)); gap:24px; margin-top:8px;}
.card{
  background:var(--surface); border:1px solid var(--border); border-radius:20px;
  padding:32px 28px; box-shadow:var(--shadow-card);
  transition:transform .2s ease, box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);}
.card-icon{
  display:grid; place-items:center; width:50px; height:50px; border-radius:14px;
  background:color-mix(in srgb, var(--accent) 14%, transparent); color:var(--accent);
  font-size:1.5rem; margin-bottom:18px;
}
.card h3{font-family:'Fraunces',Georgia,serif; font-weight:600; font-size:1.3rem; margin-bottom:10px;}
.card p{color:var(--muted);}

/* ---- Bloque operadora de voz ---- */
.voice{position:relative; overflow:hidden; background:var(--surface); border-top:1px solid var(--border); border-bottom:1px solid var(--border);}
.voice-inner{
  max-width:1080px; margin:0 auto; padding:clamp(64px,9vw,120px) clamp(20px,5vw,64px);
  display:grid; grid-template-columns:minmax(180px,.7fr) 1.3fr; gap:clamp(30px,5vw,70px); align-items:center;
}
.voice-art{display:grid; place-items:center; aspect-ratio:1; border-radius:50%;
  background:radial-gradient(circle, color-mix(in srgb,var(--accent) 18%, transparent), transparent 70%);}
.voice-art .mark{width:min(46%,180px); height:auto; color:var(--accent);
  animation:pulse 3.4s ease-in-out infinite;}
.voice-copy p{color:var(--muted); font-size:1.1rem; max-width:54ch;}
@keyframes pulse{0%,100%{transform:scale(1); opacity:.9;} 50%{transform:scale(1.06); opacity:1;}}

/* ---- VeriFactu ---- */
.verifactu-inner{max-width:760px; margin:0 auto; text-align:center;}
.badge{display:inline-block; font-weight:600; font-size:.78rem; letter-spacing:.08em;
  padding:6px 14px; border-radius:999px; background:color-mix(in srgb,var(--accent-2) 20%, transparent);
  color:var(--accent-2); margin-bottom:18px;}
.verifactu-inner p{color:var(--muted); font-size:1.1rem;}

/* ---- CTA final ---- */
.final-cta{background:var(--accent); color:var(--on-accent); text-align:center;
  padding:clamp(60px,9vw,110px) clamp(20px,5vw,64px);}
.final-cta h2{font-family:'Fraunces',Georgia,serif; font-weight:600; letter-spacing:-.02em;
  font-size:clamp(1.8rem,4vw,2.8rem); margin-bottom:28px;}
.final-cta .btn-primary{background:var(--on-accent); color:var(--accent);}
.final-cta .btn-primary:hover{background:color-mix(in srgb,var(--on-accent) 88%, #000);}

/* ---- Footer ---- */
.site-foot{display:flex; align-items:center; gap:18px; flex-wrap:wrap; justify-content:center;
  padding:34px 20px; border-top:1px solid var(--border); color:var(--muted); font-size:.88rem;}
.foot-brand{font-family:'Fraunces',Georgia,serif; font-weight:600;}
.foot-brand .ia{color:var(--accent);}

/* ---- Reveal on scroll ---- */
.reveal{opacity:0; transform:translateY(18px); transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1; transform:none;}
.hero .reveal:nth-child(2){transition-delay:.08s} .hero .reveal:nth-child(3){transition-delay:.16s} .hero .reveal:nth-child(4){transition-delay:.24s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1; transform:none; transition:none;} .voice-art .mark{animation:none;}}

/* ---- Selector de temas SOLO en desarrollo (oculto en producción) ---- */
.theme-dev{position:fixed; right:16px; bottom:16px; z-index:50; display:flex; gap:6px; align-items:center;
  background:var(--surface); border:1px solid var(--border); border-radius:999px; padding:6px 8px; box-shadow:var(--shadow-card);}
.theme-dev span{font-size:.68rem; color:var(--muted); padding:0 6px; letter-spacing:.06em; text-transform:uppercase;}
.theme-dev button{width:26px; height:26px; border-radius:50%; border:2px solid var(--border); cursor:pointer; padding:0;}
.theme-dev button[data-t="bone"]{background:#F7F5EF;}
.theme-dev button[data-t="ink"]{background:#0F1A24;}
.theme-dev button[data-t="emerald"]{background:#06231F;}
.theme-dev button.active{border-color:var(--accent); transform:scale(1.12);}

@media (max-width:720px){
  .voice-inner{grid-template-columns:1fr;}
  .voice-art{max-width:260px;}
}