/* ============================================================================
   TUNAL DIGITAL — styles.css
   Dirección: "Tech Atardecer" — fondo oscuro con un amanecer/atardecer vivo
   que reacciona al cursor, paneles de vidrio (glass) y tipografía editorial.
   Paleta: Tunal Amanecer. Tipos: Fraunces (títulos) + Hanken Grotesk (cuerpo).
   ============================================================================ */

/* =============================================================
   1. Tokens
   ============================================================= */
:root{
  /* Marca */
  --carbon:#1B1F2A;
  --carbon-deep:#12151C;
  --carbon-soft:#1E2330;
  --ambar:#B8541A;
  --ambar-luz:#E58E45;        /* ámbar claro para texto/acentos sobre oscuro */
  --arena:#E8DCC4;
  --obsidiana:#2C3E5C;
  --jade:#4A6B5C;
  --hueso:#F5EFE6;

  /* Roles sobre fondo oscuro */
  --ink:#F5EFE6;
  --ink-soft:rgba(245,239,230,.72);
  --ink-mute:rgba(245,239,230,.52);
  --line:rgba(232,220,196,.14);
  --glass:rgba(245,239,230,.045);
  --glass-2:rgba(245,239,230,.07);
  --glass-brd:rgba(232,220,196,.13);

  /* Tipos */
  --serif:'Fraunces',Georgia,'Times New Roman',serif;
  --sans:'Hanken Grotesk',-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;

  /* Medidas */
  --maxw:1140px;
  --gutter:clamp(20px,5vw,44px);
  --radius:18px;
  --radius-sm:12px;

  /* Easings */
  --ease-out:cubic-bezier(0.16,1,0.3,1);
  --ease-soft:cubic-bezier(0.25,0.46,0.45,0.94);
  --ease-bounce:cubic-bezier(0.34,1.4,0.64,1);
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*,*::before,*::after{box-sizing:border-box;margin:0}
html{-webkit-text-size-adjust:100%;tab-size:2;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--carbon-deep);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
  position:relative;
  min-height:100vh;
}
img,svg,video{display:block;max-width:100%}
img{height:auto}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
p{text-wrap:pretty}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.08;letter-spacing:-.02em;text-wrap:balance}
::selection{background:var(--ambar);color:var(--hueso)}
:focus-visible{outline:2px solid var(--ambar-luz);outline-offset:3px;border-radius:6px}

/* =============================================================
   3. Utilidades
   ============================================================= */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:-100px;left:16px;padding:.6rem 1rem;background:var(--hueso);color:var(--carbon);z-index:9999;border-radius:8px;font-weight:600}
.skip-link:focus{top:16px}
.eyebrow{font-family:var(--sans);font-weight:700;text-transform:uppercase;letter-spacing:.2em;font-size:12px;color:var(--ambar-luz)}
.serif{font-family:var(--serif)}
.italic{font-style:italic}

/* Bilingüe: mostrar/ocultar según el idioma activo */
body.lang-es .en{display:none}
body.lang-en .es{display:none}

/* =============================================================
   4. Fondo "atardecer" vivo (aurora)
   ============================================================= */
.aurora,.aurora__cursor,.aurora__drift,.aurora__grain{position:fixed;inset:0;pointer-events:none}
.aurora{
  z-index:-4;
  background:
    radial-gradient(125% 85% at 50% 118%, rgba(184,84,26,.40), transparent 56%),
    radial-gradient(95% 75% at 8% -12%, rgba(44,62,92,.46), transparent 55%),
    radial-gradient(75% 65% at 94% -4%, rgba(74,107,92,.16), transparent 55%),
    linear-gradient(180deg,#12151C 0%, #1B1F2A 55%, #14171F 100%);
}
/* Glow que sigue al cursor */
.aurora__cursor{
  z-index:-3;
  background:radial-gradient(560px circle at var(--mx,50%) var(--my,22%), rgba(229,142,69,.18), transparent 60%);
  transition:background .25s var(--ease-out);
  mix-blend-mode:screen;
}
/* Glow ambiental que respira (vive aunque no haya mouse: móvil/táctil) */
.aurora__drift{
  z-index:-3;
  background:radial-gradient(46% 40% at 70% 30%, rgba(184,84,26,.20), transparent 60%);
  animation:drift 22s ease-in-out infinite alternate;
  mix-blend-mode:screen;
}
@keyframes drift{
  0%{transform:translate3d(-6%,2%,0) scale(1)}
  100%{transform:translate3d(8%,-4%,0) scale(1.15)}
}
/* Grano sutil = textura de amanecer generada en código */
.aurora__grain{
  z-index:-2;opacity:.05;
  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");
}

/* =============================================================
   5. Botones
   ============================================================= */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--sans);font-weight:600;font-size:15px;
  padding:13px 24px;border-radius:12px;
  background:var(--ambar);color:var(--hueso);
  transition:transform .2s var(--ease-out),box-shadow .25s var(--ease-out),background .2s;
  box-shadow:0 8px 24px -8px rgba(184,84,26,.6);
  will-change:transform;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 32px -8px rgba(184,84,26,.7);background:#C95E20}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--glass-brd);box-shadow:none}
.btn.ghost:hover{background:var(--glass-2);border-color:rgba(232,220,196,.3)}
.btn.small{padding:10px 18px;font-size:14px}
.btn-arrow{transition:transform .25s var(--ease-out)}
.btn:hover .btn-arrow{transform:translateX(4px)}

/* =============================================================
   6. Glass (paneles de vidrio)
   ============================================================= */
.glass{
  background:var(--glass);
  border:1px solid var(--glass-brd);
  border-radius:var(--radius);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  /* Fallback sólido si el navegador no soporta blur */
  background-color:rgba(28,32,43,.55);
}
@supports (backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px)){
  .glass{background-color:var(--glass)}
}

/* =============================================================
   7. Header / Nav
   ============================================================= */
.nav{position:sticky;top:0;z-index:60;border-bottom:1px solid transparent;transition:border-color .3s,background .3s,backdrop-filter .3s}
.nav.scrolled{background:rgba(18,21,28,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{width:38px;height:38px;flex-shrink:0}
.brand-name{font-family:var(--serif);font-weight:600;font-size:20px;letter-spacing:-.02em;line-height:1}
.brand-name small{display:block;font-family:var(--sans);font-weight:600;font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--ambar-luz);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:28px;font-size:14.5px;font-weight:500}
.nav-links a{color:var(--ink-soft);transition:color .2s;position:relative}
.nav-links a:hover{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1.5px;background:var(--ambar-luz);transition:width .25s var(--ease-out)}
.nav-links a:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:14px}
.lang{display:flex;border:1px solid var(--glass-brd);border-radius:9px;overflow:hidden;font-size:12px;font-weight:700}
.lang button{padding:6px 10px;color:var(--ink-mute);transition:color .2s,background .2s}
body.lang-es .lang .b-es,body.lang-en .lang .b-en{background:var(--hueso);color:var(--carbon)}
.nav-toggle{display:none}

/* =============================================================
   8. Hero
   ============================================================= */
.hero{position:relative;min-height:92vh;min-height:92svh;display:flex;align-items:center;padding:80px 0 90px;overflow:hidden}
.hero .wrap{position:relative;z-index:2;width:100%}
.hero-inner{max-width:760px}
.hero h1{font-size:clamp(48px,9vw,104px);font-weight:600;line-height:.98;margin:18px 0 0}
.hero h1 .light{font-style:italic;font-weight:400;color:var(--ambar-luz);display:block}
.hero-tag{font-family:var(--serif);font-style:italic;font-weight:400;font-size:clamp(19px,3vw,28px);color:var(--ink-soft);margin-top:14px}
.hero p.sub{max-width:54ch;font-size:clamp(16px,2.1vw,19px);color:var(--ink-soft);margin-top:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.hero-sun{position:absolute;right:-8%;top:50%;transform:translateY(-50%);width:min(46vw,560px);aspect-ratio:1;z-index:1;pointer-events:none;opacity:.92}
/* Resplandor DETRÁS del emblema (no sobre el logo, para respetar el manual de marca) */
.hero-sun::before{content:"";position:absolute;inset:8%;border-radius:50%;background:radial-gradient(circle,rgba(184,84,26,.5),rgba(184,84,26,.12) 45%,transparent 68%);z-index:-1}
.hero-sun svg{width:100%;height:100%;position:relative}
@media (max-width:900px){.hero-sun{opacity:.32;right:-22%;width:min(80vw,520px)}}

/* Línea de scroll hint */
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;display:flex;flex-direction:column;align-items:center;gap:8px;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-mute)}
.scroll-hint span{width:1px;height:40px;background:linear-gradient(var(--ambar-luz),transparent);animation:scrollline 2.2s ease-in-out infinite}
@keyframes scrollline{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* =============================================================
   9. Secciones genéricas
   ============================================================= */
section{position:relative;padding:clamp(72px,10vw,118px) 0}
.section-head{max-width:640px}
.section-head h2{font-size:clamp(30px,5vw,46px);margin-top:14px}
.section-head p{font-size:clamp(16px,2vw,18px);color:var(--ink-soft);margin-top:16px}
.section-head.center{margin-inline:auto;text-align:center}

/* =============================================================
   10. Stats
   ============================================================= */
.stats{padding-top:0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{padding:30px 26px;text-align:left}
.stat .num{font-family:var(--serif);font-weight:600;font-size:clamp(34px,5vw,50px);line-height:1;color:var(--ink);letter-spacing:-.03em}
.stat .num .sym{color:var(--ambar-luz)}
.stat .lbl{font-size:13.5px;color:var(--ink-soft);margin-top:10px;line-height:1.4}
@media (max-width:760px){.stats-grid{grid-template-columns:1fr 1fr}}

/* =============================================================
   11. Servicios
   ============================================================= */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:52px}
.card{padding:34px 30px;transition:transform .3s var(--ease-out),border-color .3s,background .3s}
.card:hover{transform:translateY(-5px);border-color:rgba(232,220,196,.26);background:var(--glass-2)}
.card .ic{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(184,84,26,.16);border:1px solid rgba(184,84,26,.28);margin-bottom:22px}
.card .ic svg{width:26px;height:26px;stroke:var(--ambar-luz)}
.card h3{font-size:22px}
.card p{font-size:15px;color:var(--ink-soft);margin-top:11px}
@media (max-width:880px){.cards{grid-template-columns:1fr;gap:16px}}

/* =============================================================
   12. Asistente Tunal (chat)
   ============================================================= */
.assistant-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center}
@media (max-width:900px){.assistant-grid{grid-template-columns:1fr;gap:36px}}
.assistant-copy .feat{display:flex;gap:12px;margin-top:18px;font-size:15px;color:var(--ink-soft)}
.assistant-copy .feat svg{width:20px;height:20px;stroke:var(--jade);flex-shrink:0;margin-top:3px}
.assistant-badge{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--ink-soft);background:var(--glass);border:1px solid var(--glass-brd);padding:6px 13px;border-radius:999px;margin-bottom:18px}
.assistant-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--jade);box-shadow:0 0 0 0 rgba(74,107,92,.7);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(74,107,92,.6)}70%{box-shadow:0 0 0 9px rgba(74,107,92,0)}100%{box-shadow:0 0 0 0 rgba(74,107,92,0)}}

/* Ventana de chat */
.chat{border-radius:22px;overflow:hidden;display:flex;flex-direction:column;height:520px;max-height:78vh;box-shadow:0 30px 70px -30px rgba(0,0,0,.7)}
.chat-head{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--glass-brd);background:rgba(18,21,28,.5)}
.chat-head .mark{width:34px;height:34px}
.chat-head .who{line-height:1.2}
.chat-head .who b{font-family:var(--serif);font-size:16px;font-weight:600}
.chat-head .who span{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-mute)}
.chat-head .who .dot{width:7px;height:7px;border-radius:50%;background:var(--jade)}
.chat-log{flex:1;overflow-y:auto;padding:22px 20px;display:flex;flex-direction:column;gap:14px;scroll-behavior:smooth}
.msg{max-width:84%;padding:12px 16px;border-radius:16px;font-size:14.5px;line-height:1.55;animation:msgin .35s var(--ease-out)}
@keyframes msgin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.bot{align-self:flex-start;background:var(--glass-2);border:1px solid var(--glass-brd);border-bottom-left-radius:5px;color:var(--ink)}
.msg.user{align-self:flex-end;background:var(--ambar);color:var(--hueso);border-bottom-right-radius:5px}
.msg.typing{display:flex;gap:5px;align-items:center}
.msg.typing i{width:7px;height:7px;border-radius:50%;background:var(--ink-mute);animation:blink 1.2s infinite}
.msg.typing i:nth-child(2){animation-delay:.2s}
.msg.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}
.chat-suggest{display:flex;flex-wrap:wrap;gap:8px;padding:0 20px 14px}
.chip{font-size:12.5px;font-weight:500;color:var(--ink-soft);background:var(--glass);border:1px solid var(--glass-brd);padding:7px 13px;border-radius:999px;transition:background .2s,color .2s,border-color .2s}
.chip:hover{background:var(--glass-2);color:var(--ink);border-color:rgba(232,220,196,.3)}
.chat-input{display:flex;gap:10px;padding:14px 16px;border-top:1px solid var(--glass-brd);background:rgba(18,21,28,.5)}
.chat-input input{flex:1;background:var(--glass);border:1px solid var(--glass-brd);border-radius:12px;padding:12px 15px;color:var(--ink);font-family:var(--sans);font-size:14.5px}
.chat-input input::placeholder{color:var(--ink-mute)}
.chat-input input:focus{outline:none;border-color:var(--ambar-luz)}
.chat-send{width:46px;height:46px;border-radius:12px;background:var(--ambar);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:transform .2s var(--ease-out),background .2s}
.chat-send:hover{transform:translateY(-2px);background:#C95E20}
.chat-send svg{width:20px;height:20px;stroke:var(--hueso)}

/* =============================================================
   13. Cotizador
   ============================================================= */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:50px;align-items:stretch}
@media (max-width:880px){.quote-grid{grid-template-columns:1fr}}
.quote-form{padding:34px 32px}
.quote-q{margin-bottom:26px}
.quote-q:last-child{margin-bottom:0}
.quote-q .q-label{font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--ambar-luz);margin-bottom:13px}
.opt-row{display:flex;flex-wrap:wrap;gap:10px}
.opt{font-size:14px;font-weight:500;color:var(--ink-soft);background:var(--glass);border:1px solid var(--glass-brd);padding:11px 16px;border-radius:11px;transition:all .2s var(--ease-out)}
.opt:hover{border-color:rgba(232,220,196,.3);color:var(--ink)}
.opt[aria-pressed="true"]{background:var(--ambar);border-color:var(--ambar);color:var(--hueso);box-shadow:0 6px 18px -8px rgba(184,84,26,.7)}
.quote-result{padding:34px 32px;display:flex;flex-direction:column}
.quote-result .rec-label{font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-mute)}
.quote-result .rec-name{font-family:var(--serif);font-size:34px;font-weight:600;margin-top:6px;display:flex;align-items:center;gap:12px}
.quote-result .rec-name .pop{font-family:var(--sans);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ambar-luz);background:rgba(184,84,26,.16);border:1px solid rgba(184,84,26,.3);padding:4px 9px;border-radius:999px}
.quote-price{display:flex;gap:26px;margin:20px 0;flex-wrap:wrap}
.quote-price .p b{display:block;font-family:var(--serif);font-size:30px;font-weight:600;color:var(--ink)}
.quote-price .p span{font-size:12.5px;color:var(--ink-mute)}
.quote-feats{list-style:none;display:grid;gap:9px;margin:6px 0 20px}
.quote-feats li{position:relative;padding-left:26px;font-size:14px;color:var(--ink-soft)}
.quote-feats li::before{content:"";position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:50%;border:2px solid var(--ambar);background:radial-gradient(circle,var(--ambar) 0,var(--ambar) 3px,transparent 4px)}
.quote-meta{font-size:13px;color:var(--ink-mute);margin-bottom:18px}
.quote-result .btn{margin-top:auto}
.quote-note{font-size:12px;color:var(--ink-mute);margin-top:26px;text-align:center}

/* =============================================================
   14. Proceso
   ============================================================= */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:52px;counter-reset:step}
.step{padding:30px 26px}
.step .n{font-family:var(--serif);font-size:15px;font-weight:600;color:var(--ambar-luz);width:42px;height:42px;border-radius:50%;border:1px solid rgba(184,84,26,.35);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.step h3{font-size:18px}
.step p{font-size:14px;color:var(--ink-soft);margin-top:9px}
@media (max-width:880px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* =============================================================
   15. Por qué / Fundador
   ============================================================= */
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
@media (max-width:820px){.why-grid{grid-template-columns:1fr;gap:30px}}
.why-lead{font-family:var(--serif);font-size:clamp(24px,3.6vw,34px);font-weight:500;line-height:1.22;max-width:20ch}
.why p{font-size:16px;color:var(--ink-soft);margin-top:18px;max-width:52ch}
.why-points{list-style:none;display:grid;gap:16px}
.why-points li{padding:20px 22px}
.why-points li b{display:block;font-family:var(--serif);font-size:17px;margin-bottom:5px;color:var(--ink)}
.why-points li span{font-size:14.5px;color:var(--ink-soft)}

/* =============================================================
   16. Contacto
   ============================================================= */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:42px;margin-top:50px;align-items:start}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr;gap:30px}}
.form{padding:34px 32px}
.form label{display:block;font-size:13px;font-weight:600;margin:18px 0 7px;color:var(--ink-soft)}
.form label:first-child{margin-top:0}
.form input,.form textarea{width:100%;background:var(--glass);border:1px solid var(--glass-brd);border-radius:11px;padding:13px 15px;color:var(--ink);font-family:var(--sans);font-size:15px;transition:border-color .2s}
.form input::placeholder,.form textarea::placeholder{color:var(--ink-mute)}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--ambar-luz)}
.form .btn{margin-top:22px;width:100%;justify-content:center;padding:15px}
.form-note{font-size:12px;color:var(--ink-mute);margin-top:13px;text-align:center}
.form-msg{font-size:14px;margin-top:14px;padding:12px 15px;border-radius:10px;display:none}
.form-msg.ok{display:block;background:rgba(74,107,92,.18);border:1px solid rgba(74,107,92,.4);color:#bfe3d2}
.form-msg.err{display:block;background:rgba(184,84,26,.16);border:1px solid rgba(184,84,26,.4);color:#f0c2a0}
.contact-alt{display:flex;flex-direction:column;gap:13px}
.alt-card{display:flex;align-items:center;gap:14px;padding:18px 20px;transition:transform .25s var(--ease-out),border-color .25s,background .25s}
.alt-card:hover{transform:translateY(-3px);border-color:rgba(232,220,196,.28);background:var(--glass-2)}
.alt-card .ai{width:44px;height:44px;border-radius:11px;background:rgba(184,84,26,.16);border:1px solid rgba(184,84,26,.28);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.alt-card .ai svg{width:20px;height:20px;stroke:var(--ambar-luz)}
.alt-card .t{font-size:12.5px;color:var(--ink-mute)}
.alt-card .v{font-size:15px;font-weight:600;color:var(--ink)}

/* Calendly */
.calendly-wrap{margin-top:18px}
.calendly-inline-widget{min-width:280px;height:560px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--glass-brd)}

/* =============================================================
   17. Footer
   ============================================================= */
footer{padding:60px 0 40px;border-top:1px solid var(--line);text-align:center;position:relative}
footer .brand{justify-content:center;margin-bottom:14px}
footer .ftag{font-family:var(--serif);font-style:italic;color:var(--ambar-luz);font-size:17px}
footer .fsmall{font-size:12.5px;color:var(--ink-mute);margin-top:14px;line-height:1.7}
footer a{color:var(--ink-soft);border-bottom:1px solid transparent;transition:border-color .2s}
footer a:hover{border-bottom-color:var(--ambar-luz)}

/* =============================================================
   18. Reveal (animación de entrada)
   Sólo se ocultan si JS está activo (clase .js). Sin JS, todo se ve.
   ============================================================= */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.js .reveal.is-visible{opacity:1;transform:none}
.js .reveal.d1{transition-delay:.08s}
.js .reveal.d2{transition-delay:.16s}
.js .reveal.d3{transition-delay:.24s}

/* =============================================================
   19. Responsive
   ============================================================= */
@media (max-width:760px){
  .nav-links{display:none}
  .nav-right .btn.small{display:none}   /* en móvil solo queda el botón flotante "Conversemos" */
  .nav-links.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:18px;padding:22px var(--gutter);background:rgba(18,21,28,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
  .nav-toggle{display:flex;flex-direction:column;gap:5px;width:40px;height:40px;align-items:center;justify-content:center}
  .nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .2s}
  .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)}
}

/* =============================================================
   20. Reduced-motion — sólo lo intrusivo (NO matar hovers/reveals)
   ============================================================= */
@media (prefers-reduced-motion:reduce){
  .aurora__drift{animation:none}
  .scroll-hint span{animation:none}
  .assistant-badge .dot{animation:none}
  .js .reveal{transition-duration:.4s;transform:none}   /* aparece sin desplazarse */
}

/* =============================================================
   21. CTA intermedio + CTA fijo en móvil
   ============================================================= */
.cta-band{padding:clamp(40px,7vw,72px) 0}
.cta-band-inner{padding:clamp(30px,5vw,54px);text-align:center;display:flex;flex-direction:column;align-items:center;gap:20px}
.cta-band-inner h2{font-size:clamp(26px,4.4vw,42px);max-width:20ch}

/* Botón flotante: oculto por defecto, visible solo en móvil */
.cta-fab{
  position:fixed;left:50%;transform:translateX(-50%);
  bottom:calc(16px + env(safe-area-inset-bottom,0px));
  z-index:70;display:none;align-items:center;gap:8px;
  background:var(--ambar);color:var(--hueso);font-family:var(--sans);font-weight:600;font-size:15px;
  padding:14px 28px;border-radius:999px;
  box-shadow:0 12px 30px -8px rgba(184,84,26,.85);
}
.cta-fab:active{transform:translateX(-50%) translateY(1px)}
@media (max-width:760px){ .cta-fab{display:inline-flex} }
.cta-fab.hide{display:none!important}   /* se oculta al llegar a Contacto para no estorbar */

/* =============================================================
   22. Cotizador por función + descuento de fundador
   ============================================================= */
.opt-price{color:var(--ambar-luz);font-weight:700;margin-left:6px;font-variant-numeric:tabular-nums}
.opt[aria-pressed="true"] .opt-price{color:var(--hueso)}
.old-price{text-decoration:line-through;color:var(--ink-mute);font-weight:400;font-size:.62em;margin-right:7px}
.founding-banner{display:flex;gap:10px 14px;align-items:center;justify-content:center;flex-wrap:wrap;text-align:center;max-width:660px;margin:0 auto 30px;padding:14px 22px}
.founding-banner .fb-badge{background:var(--ambar);color:var(--hueso);font-weight:700;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;padding:5px 13px;border-radius:999px;white-space:nowrap}
.founding-banner .fb-text{font-size:14px;color:var(--ink-soft)}