/* =============================================================
   CAUCE — Estudio web
   Arquetipo: Mouse-Reactive Gradient (monocromo + un acento)
   ============================================================= */

/* ---------- 1. TOKENS ---------- */
:root {
  --bg:      #0A0A0A;
  --bg-2:    #101010;
  --bg-3:    #161616;
  --bg-4:    #1E1E1E;

  --ink:     #FAFAFA;
  --ink-2:   #D4D4D4;
  --mute:    #8A8A8A;

  --accent:  #7C5CFF;
  --accent-2:#A48CFF;
  --accent-3:#5B3EE8;

  --g1: #7C5CFF;
  --g2: #3A86FF;
  --g3: #FF4D9D;

  --line:   rgba(250,250,250,.10);
  --line-2: rgba(250,250,250,.05);

  --disp: "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --e-out: cubic-bezier(.16,1,.3,1);
  --e-soft: cubic-bezier(.25,.46,.45,.94);

  --wrap: 1180px;
  --gut: clamp(1.15rem, 4vw, 3rem);
  --hd: 66px;
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--hd) + 18px);
}
body {
  font-family: var(--sans);
  font-size: 16px; line-height: 1.6;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
p { text-wrap: pretty; }
h1, h2, h3 {
  font-family: var(--disp); font-weight: 500;
  color: var(--ink); line-height: 1.02;
  letter-spacing: -.035em; text-wrap: balance;
}
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 9999;
  padding: .6rem 1rem; border-radius: 8px;
  background: var(--ink); color: var(--bg); font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* ---------- 3. UTILIDADES ---------- */
.wrap { width: min(100% - var(--gut)*2, var(--wrap)); margin-inline: auto; }
.sec { padding-block: clamp(4.5rem, 11vw, 9rem); position: relative; }

.kick {
  font-family: var(--mono); font-size: .72rem;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--accent-2); margin-bottom: 1.1rem;
}
.st { font-size: clamp(2rem, 5.4vw, 3.8rem); max-width: 19ch; }
.sl { margin-top: 1.2rem; max-width: 58ch; color: var(--mute); font-size: clamp(1rem,1.5vw,1.08rem); }
.sh { margin-bottom: clamp(2.4rem, 5vw, 4rem); }
.hl { color: var(--accent-2); }

.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: .22;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/></filter><rect width='120' height='120' filter='url(%23n)' opacity='.4'/></svg>");
}

/* ---------- 4. BOTONES ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .85rem 1.5rem; border-radius: 8px;
  font-family: var(--sans); font-weight: 600; font-size: .93rem;
  letter-spacing: -.01em; text-align: center;
  transition: transform .3s var(--e-out), background-color .3s var(--e-out),
              color .3s var(--e-out), border-color .3s var(--e-out), box-shadow .3s var(--e-out);
}
.btn:hover { transform: translateY(-2px); }
.btn-p { background: var(--accent); color: #fff; box-shadow: 0 10px 34px -14px var(--accent); }
.btn-p:hover { background: var(--accent-2); box-shadow: 0 16px 44px -14px var(--accent); }
.btn-g { border: 1px solid var(--line); color: var(--ink); }
.btn-g:hover { border-color: var(--accent); color: var(--accent-2); }
.btn-s { padding: .58rem 1.05rem; font-size: .85rem; }
.btn-l { padding: 1rem 1.8rem; font-size: 1rem; }

/* ---------- 5. HEADER ---------- */
.brand {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--disp); font-size: 1.22rem; font-weight: 700;
  color: var(--ink); letter-spacing: -.03em;
}
.brand-dot {
  width: 11px; height: 11px; border-radius: 50%; flex: none;
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent);
}

.hd {
  position: fixed; inset: 0 0 auto 0; z-index: 700; height: var(--hd);
  border-bottom: 1px solid transparent;
  transition: background-color .35s var(--e-out), border-color .35s var(--e-out), backdrop-filter .35s;
}
.hd.stuck { background: rgba(10,10,10,.82); backdrop-filter: blur(14px); border-bottom-color: var(--line-2); }
.hd-in {
  width: min(100% - var(--gut)*2, 1300px); margin-inline: auto; height: 100%;
  display: flex; align-items: center; gap: 1.5rem;
}
.nav { display: none; gap: 1.7rem; margin-left: auto; font-size: .9rem; }
.nav a { color: var(--mute); transition: color .3s var(--e-out); }
.nav a:hover { color: var(--ink); }
.hd .btn { margin-left: auto; }
.nav + .btn { margin-left: 0; }

/* ---------- 6. HERO ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: calc(var(--hd) + 3rem); padding-bottom: 6rem;
  overflow: hidden;
}
.hero-grad {
  position: absolute; inset: -25%; z-index: 0; pointer-events: none;
  background:
    radial-gradient(circle 520px at var(--mx,50%) var(--my,42%), var(--g1) 0%, transparent 55%),
    radial-gradient(circle 620px at calc(var(--mx,50%) + 14%) calc(var(--my,42%) - 12%), var(--g2) 0%, transparent 55%),
    radial-gradient(circle 420px at calc(var(--mx,50%) - 16%) calc(var(--my,42%) + 14%), var(--g3) 0%, transparent 55%);
  filter: blur(90px) saturate(130%);
  opacity: .32;
  transition: opacity .6s var(--e-out);
}
.hero-in { position: relative; z-index: 2; }

.tag {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--mono); font-size: .72rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2);
  padding: .45rem .95rem; border-radius: 99px;
  border: 1px solid var(--line); background: rgba(10,10,10,.5);
  backdrop-filter: blur(8px); margin-bottom: 2rem;
}
.tag .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 0 rgba(124,92,255,.65); animation: pl 2.4s infinite;
}
@keyframes pl { 70% { box-shadow: 0 0 0 9px rgba(124,92,255,0); } 100% { box-shadow: 0 0 0 0 rgba(124,92,255,0); } }

.hero-t {
  font-size: clamp(3rem, 11vw, 8.4rem);
  font-weight: 700; letter-spacing: -.05em; line-height: .93;
  margin-bottom: 2rem; max-width: 13ch;
}
.hero-s { max-width: 54ch; font-size: clamp(1rem,1.7vw,1.14rem); color: var(--ink-2); margin-bottom: 2.6rem; }
.hero-a { display: flex; flex-wrap: wrap; gap: .75rem; }

.hero-mq {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  border-top: 1px solid var(--line-2); padding-block: 1rem;
  overflow: hidden; background: rgba(10,10,10,.4); backdrop-filter: blur(6px);
}
.mq-t {
  display: flex; gap: 1.6rem; white-space: nowrap; width: max-content;
  font-family: var(--mono); font-size: .76rem; color: var(--mute);
  letter-spacing: .1em; text-transform: uppercase;
  animation: mq 34s linear infinite;
}
.mq-t i { color: var(--accent); font-style: normal; }
@keyframes mq { to { transform: translateX(-50%); } }

/* ---------- 7. MANIFIESTO ---------- */
.manif { border-top: 1px solid var(--line-2); }
.manif-t {
  font-family: var(--disp); font-weight: 500;
  font-size: clamp(1.8rem, 5vw, 3.4rem);
  color: var(--ink); line-height: 1.08; letter-spacing: -.035em;
  margin-bottom: 2.6rem; max-width: 20ch;
}
.manif-b { display: grid; gap: 1.1rem; max-width: 62ch; color: var(--mute); font-size: 1.02rem; }
.manif-h {
  color: var(--ink); font-size: 1.1rem; border-left: 2px solid var(--accent);
  padding-left: 1.1rem; margin-top: .6rem;
}

/* ---------- 8. DATOS ---------- */
.datos { background: var(--bg-2); border-block: 1px solid var(--line-2); }
.dgrid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
.d {
  border: 1px solid var(--line); border-radius: 14px;
  padding: 1.6rem 1.4rem; background: var(--bg-3);
  transition: border-color .4s var(--e-out);
}
.d:hover { border-color: rgba(124,92,255,.4); }
.d strong {
  display: block; font-family: var(--disp); font-weight: 700;
  font-size: clamp(2.6rem,7vw,4rem); color: var(--accent-2);
  line-height: 1; letter-spacing: -.05em; margin-bottom: .6rem;
}
.d span { font-size: .92rem; color: var(--mute); }
.dnote { margin-top: 1.6rem; font-size: .88rem; color: var(--mute); max-width: 62ch; }

/* ---------- 9. ACORDEÓN (servicios + faq) ---------- */
.acc { display: grid; gap: .55rem; }
.ac {
  border: 1px solid var(--line-2); border-radius: 12px;
  background: var(--bg-2);
  transition: border-color .35s var(--e-out), background-color .35s var(--e-out);
}
.ac:hover { border-color: var(--line); }
.ac[open] { border-color: rgba(124,92,255,.35); background: var(--bg-3); }
.ac summary {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.15rem 3rem 1.15rem 1.25rem;
  cursor: pointer; list-style: none; position: relative;
}
.ac summary::-webkit-details-marker { display: none; }
.ac summary::after {
  content: ""; position: absolute; right: 1.25rem; top: 50%;
  width: 13px; height: 13px; margin-top: -6px;
  background: no-repeat center/contain url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237C5CFF' stroke-width='3' stroke-linecap='round'><path d='M12 5v14M5 12h14'/></svg>");
  transition: transform .35s var(--e-out);
}
.ac[open] summary::after { transform: rotate(135deg); }
.ac-n { font-family: var(--mono); font-size: .76rem; color: var(--accent); flex: none; }
.ac-t { font-family: var(--disp); font-size: 1.06rem; font-weight: 500; color: var(--ink); letter-spacing: -.02em; }
.ac-m { margin-left: auto; font-family: var(--mono); font-size: .7rem; color: var(--mute); text-transform: uppercase; letter-spacing: .1em; display: none; }
.ac-b { padding: 0 1.25rem 1.4rem; max-width: 74ch; }
.ac-b > p { color: var(--ink-2); font-size: .95rem; margin-bottom: .9rem; }
.ac-b ul { display: grid; gap: .5rem; }
.ac-b li { font-size: .9rem; color: var(--mute); padding-left: 1.3rem; position: relative; }
.ac-b li::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}
.ac-b strong { color: var(--ink); }
.ac-x {
  margin-top: 1rem; padding: .75rem .9rem; border-radius: 9px;
  background: rgba(124,92,255,.08); border: 1px solid rgba(124,92,255,.22);
  font-size: .85rem; color: var(--accent-2);
}

/* ---------- 10. SECTORES ---------- */
.sect { background: var(--bg-2); border-block: 1px solid var(--line-2); }
.sgrid { display: grid; gap: .6rem; grid-template-columns: 1fr; }
.sgrid li {
  border: 1px solid var(--line-2); border-radius: 12px;
  padding: 1.1rem 1.2rem; background: var(--bg-3);
  transition: border-color .35s var(--e-out), transform .35s var(--e-out);
}
.sgrid li:hover { border-color: rgba(124,92,255,.4); transform: translateY(-2px); }
.sgrid b { display: block; font-family: var(--disp); font-size: 1.02rem; color: var(--ink); font-weight: 500; letter-spacing: -.02em; margin-bottom: .2rem; }
.sgrid span { font-size: .84rem; color: var(--mute); }

/* ---------- 11. EJEMPLO ---------- */
.ecard {
  display: grid; gap: 0;
  border: 1px solid var(--line); border-radius: 20px; overflow: hidden;
  background: var(--bg-2);
}
.ecard-b { padding: clamp(1.5rem,4vw,2.6rem); }
.ecard-k { font-family: var(--mono); font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; color: var(--accent-2); margin-bottom: .8rem; }
.ecard-b h3 { font-size: clamp(1.6rem,4vw,2.3rem); margin-bottom: .3rem; }
.ecard-d { color: var(--mute); font-size: .95rem; margin-bottom: 1.5rem; }
.ecard-l { display: grid; gap: .55rem; margin-bottom: 1.8rem; }
.ecard-l li { font-size: .9rem; color: var(--ink-2); padding-left: 1.5rem; position: relative; }
.ecard-l li::before {
  content: ""; position: absolute; left: 0; top: .3em; width: 14px; height: 14px;
  background: no-repeat center/contain url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237C5CFF' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='M4 13l5 5L20 7'/></svg>");
}
.ecard-n { margin-top: .9rem; font-size: .8rem; color: var(--mute); }

.ecard-v {
  background: linear-gradient(150deg, rgba(124,92,255,.22), rgba(58,134,255,.12) 55%, transparent);
  display: grid; place-items: center; padding: 2.5rem 1.5rem; min-height: 260px;
  border-top: 1px solid var(--line-2);
}
.ph {
  width: 156px; height: 320px; border-radius: 22px;
  border: 1px solid rgba(250,250,250,.16); background: var(--bg);
  padding: .7rem; box-shadow: 0 30px 60px -24px rgba(0,0,0,.9);
}
.ph-b { height: 100%; border-radius: 16px; background: var(--bg-3); padding: .8rem; display: grid; gap: .5rem; align-content: start; }
.ph-l { display: block; height: 9px; border-radius: 3px; background: rgba(250,250,250,.25); }
.ph-l.s { width: 62%; }
.ph-btn { display: block; height: 26px; border-radius: 7px; background: var(--accent); margin-top: .3rem; }
.ph-g { display: block; height: 120px; border-radius: 9px; margin-top: .4rem; background: linear-gradient(140deg, rgba(124,92,255,.4), rgba(58,134,255,.2)); }

/* ---------- 12. PROCESO ---------- */
.pl { display: grid; }
.pl li { display: grid; grid-template-columns: auto 1fr; gap: 1.1rem; padding: 1.7rem 0; border-bottom: 1px solid var(--line-2); }
.pl li:last-child { border-bottom: 0; }
.p-n { font-family: var(--mono); font-size: 1rem; color: var(--accent); padding-top: .2rem; }
.pl h3 { font-size: 1.2rem; margin-bottom: .45rem; }
.pl h3 em {
  font-family: var(--mono); font-style: normal; font-size: .68rem;
  letter-spacing: .1em; text-transform: uppercase; color: var(--accent-2);
  background: rgba(124,92,255,.1); border: 1px solid rgba(124,92,255,.28);
  padding: .22rem .55rem; border-radius: 99px; margin-left: .6rem; vertical-align: middle;
  display: inline-block;
}
.pl p { font-size: .93rem; color: var(--mute); max-width: 64ch; }

/* ---------- 13. PRECIOS ---------- */
.prec { background: var(--bg-2); border-block: 1px solid var(--line-2); }
.pgrid { display: grid; gap: 1rem; }
.pk {
  border: 1px solid var(--line); border-radius: 16px;
  padding: 1.7rem 1.5rem; background: var(--bg-3); position: relative;
  transition: border-color .4s var(--e-out), transform .4s var(--e-out);
}
.pk:hover { border-color: rgba(124,92,255,.4); transform: translateY(-3px); }
.pk-on { border-color: var(--accent); background: var(--bg-4); }
.pk-tag {
  position: absolute; top: -11px; left: 1.5rem;
  font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase;
  background: var(--accent); color: #fff; padding: .25rem .7rem; border-radius: 99px;
}
.pk h3 { font-size: 1.3rem; margin-bottom: .5rem; }
.pk-p { font-family: var(--disp); font-size: clamp(2.1rem,5vw,2.7rem); font-weight: 700; color: var(--ink); letter-spacing: -.04em; line-height: 1; margin-bottom: .5rem; }
.pk-w { font-size: .85rem; color: var(--accent-2); margin-bottom: 1.3rem; }
.pk ul { display: grid; gap: .5rem; margin-bottom: 1.4rem; }
.pk li { font-size: .88rem; color: var(--mute); padding-left: 1.25rem; position: relative; }
.pk li::before { content: ""; position: absolute; left: 0; top: .55em; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.pk li:first-child { color: var(--ink-2); }
.pk-t { font-family: var(--mono); font-size: .76rem; color: var(--mute); border-top: 1px solid var(--line-2); padding-top: .9rem; }

.mant {
  margin-top: 1rem; display: grid; gap: 1.2rem;
  border: 1px solid var(--line); border-radius: 16px; padding: 1.6rem 1.5rem;
  background: var(--bg-3);
}
.mant h3 { font-size: 1.15rem; margin-bottom: .5rem; }
.mant p { font-size: .9rem; color: var(--mute); max-width: 56ch; }
.mant-p { display: grid; gap: .6rem; }
.mant-p p { display: flex; align-items: baseline; gap: .5rem; }
.mant-p b { font-family: var(--disp); font-size: 1.5rem; color: var(--accent-2); letter-spacing: -.03em; }
.mant-p span { font-size: .84rem; color: var(--mute); }
.pnote { margin-top: 1.4rem; font-size: .84rem; color: var(--mute); max-width: 66ch; }

/* ---------- 14. CTA ---------- */
.cta { text-align: center; overflow: hidden; position: relative; }
.cta-in { position: relative; z-index: 2; }
.cta .kick { display: block; }
.cta-t { font-size: clamp(2rem,6vw,4.2rem); font-weight: 700; letter-spacing: -.045em; margin-inline: auto; max-width: 18ch; }
.cta-s { margin: 1.4rem auto 2.8rem; max-width: 54ch; color: var(--mute); }

.cta-w {
  display: inline-grid; gap: .3rem; justify-items: center;
  padding: 1.4rem 2.4rem; border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(124,92,255,.06);
  transition: border-color .4s var(--e-out), background-color .4s var(--e-out), transform .4s var(--e-out);
}
.cta-w:hover { border-color: var(--accent); background: rgba(124,92,255,.14); transform: translateY(-3px); }
.cta-w-l { font-family: var(--mono); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--accent-2); }
.cta-w-n {
  font-family: var(--disp); font-weight: 700; color: var(--ink);
  font-size: clamp(1.7rem,5vw,2.8rem); letter-spacing: -.04em;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat; background-position: 0 100%; background-size: 0 2px;
  transition: background-size .5s var(--e-out);
}
.cta-w:hover .cta-w-n { background-size: 100% 2px; }
.cta-x { margin-top: 1.6rem; font-size: .86rem; color: var(--mute); }

/* ---------- 15. FOOTER ---------- */
.ft { background: var(--bg-2); border-top: 1px solid var(--line-2); padding-block: 3rem 1.8rem; }
.ft-in { display: grid; gap: 1.8rem; }
.ft-c { margin-top: .8rem; font-size: .88rem; color: var(--mute); max-width: 34ch; }
.ft-l { display: flex; flex-wrap: wrap; gap: 1.2rem; font-size: .88rem; }
.ft-l a { color: var(--mute); transition: color .3s var(--e-out); }
.ft-l a:hover { color: var(--accent-2); }
.ft-b { margin-top: 2.2rem; padding-top: 1.2rem; border-top: 1px solid var(--line-2); }
.ft-b p { font-size: .78rem; color: var(--mute); }

/* ---------- 16. REVEAL ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--e-out), transform .8s var(--e-out); }
.reveal.vis { opacity: 1; transform: none; }

/* ---------- 17. RESPONSIVE ---------- */
@media (min-width: 540px) {
  .dgrid { grid-template-columns: repeat(2, 1fr); }
  .sgrid { grid-template-columns: repeat(2, 1fr); }
  .ac-m { display: block; }
}
@media (min-width: 720px) {
  .pl li { grid-template-columns: 66px 1fr; gap: 1.6rem; }
  .p-n { font-size: 1.15rem; }
  .pgrid { grid-template-columns: repeat(2, 1fr); max-width: 760px; margin-inline: auto; }
  .mant { grid-template-columns: 1.3fr 1fr; align-items: center; }
  .ft-in { grid-template-columns: 1.4fr 1fr; }
  .ft-l { justify-content: flex-end; }
  .sgrid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 960px) {
  :root { --hd: 74px; }
  .nav { display: flex; }
  .dgrid { grid-template-columns: repeat(4, 1fr); }
  .sgrid { grid-template-columns: repeat(4, 1fr); }
  .ecard { grid-template-columns: 1.15fr .85fr; }
  .ecard-v { border-top: 0; border-left: 1px solid var(--line-2); }
}

/* ---------- 18. REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .mq-t { animation: none; }
  .tag .dot { animation: none; }
  .hero-grad { transition: none; }
}