/* ============================================================
   STACK STUDIO — Sistema de diseño compartido (brand.css)
   Una sola fuente de verdad para todo el sitio.
   1. Tokens   2. Reset/base   3. Utilidades   4. Botones
   5. Reveal   6. Cursor   7. Header/Nav   8. Footer
   9. Flotante 10. Bloques isométricos   11. Tarjetas comunes
   12. Responsive base   13. Movimiento reducido
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --bg:#0B0B0D;            /* fondo base */
  --surface:#16161A;       /* superficies/tarjetas */
  --surface2:#1c1c22;      /* superficie elevada */
  --border:#26262E;        /* bordes */
  --line:#26262E;          /* alias */
  --text:#F2F2F0;          /* texto principal */
  --ink:#F2F2F0;           /* alias */
  --muted:#8a8a93;         /* texto apagado */
  --lime:#C6F24E;          /* acento principal */
  --accent:#C6F24E;        /* alias */
  --teal:#5CE0D8;          /* acento secundario */
  --accent2:#5CE0D8;       /* alias */
  --lime-2:#97C459;        /* tono medio del stack */
  --lime-3:#639922;        /* tono oscuro del stack */
  --amber:#EF9F27;
  --red:#e24b4a;

  --font-display:"Space Grotesk", system-ui, sans-serif;
  --font-body:"Sora", system-ui, sans-serif;

  --maxw:1200px;
  --radius:16px;
  --ease:cubic-bezier(.22,1,.36,1);
  --ease-bounce:cubic-bezier(.34,1.56,.64,1);
}

/* ---------- 2. Reset / base ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);font-weight:300;
  background:var(--bg);color:var(--text);line-height:1.6;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
/* Aire/profundidad de fondo, fijo y sutil */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 600px at 75% -10%, rgba(92,224,216,.07), transparent 60%),
    radial-gradient(700px 500px at 15% 10%, rgba(198,242,78,.06), transparent 55%);
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.05;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
section{position:relative;z-index:1}
::selection{background:var(--lime);color:#0B0B0D}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px}

/* ---------- 3. Utilidades ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.accent{color:var(--lime)}
.eyebrow{
  font-family:var(--font-display);font-size:.78rem;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--lime);
  display:inline-flex;align-items:center;gap:.6em;
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--lime);display:inline-block}
.eyebrow.center{justify-content:center}
.section-title{font-size:clamp(2rem,5vw,3.4rem);margin:.4em 0 .3em}
.section-lead{color:var(--muted);max-width:54ch;font-size:clamp(1rem,2vw,1.12rem)}
.pad{padding-block:clamp(80px,12vw,140px)}
.pad-sm{padding-block:clamp(56px,8vw,90px)}

/* ---------- 4. Botones ---------- */
.btn{
  --c:var(--lime);
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--font-display);font-weight:600;font-size:1rem;
  padding:.9em 1.6em;border-radius:100px;
  position:relative;overflow:hidden;isolation:isolate;
  border:1px solid transparent;
  transition:transform .35s var(--ease), box-shadow .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
  will-change:transform;
}
.btn svg{width:1.1em;height:1.1em;transition:transform .35s var(--ease)}
.btn-primary{background:var(--lime);color:#0B0B0D;box-shadow:0 8px 30px -8px rgba(198,242,78,.4)}
.btn-primary::after{content:"";position:absolute;inset:0;z-index:-1;background:var(--teal);transform:translateY(101%);transition:transform .4s var(--ease)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px -12px rgba(198,242,78,.5)}
.btn-primary:hover::after{transform:translateY(0)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-ghost{border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-3px)}
.btn-xl{font-size:1.15rem;padding:1.1em 2em}

/* ---------- 5. Reveal (máscara + deslizamiento) ---------- */
.reveal{
  clip-path:inset(0 0 100% 0);transform:translateY(40px);opacity:.001;
  transition:clip-path .9s var(--ease), transform .9s var(--ease), opacity .9s var(--ease);
  will-change:clip-path,transform;
}
.reveal.in{clip-path:inset(0 0 -5% 0);transform:none;opacity:1}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}
.reveal[data-delay="4"]{transition-delay:.32s}

/* ---------- 6. Cursor personalizado ---------- */
.cursor-dot,.cursor-ring{position:fixed;top:0;left:0;border-radius:50%;pointer-events:none;z-index:9999;mix-blend-mode:difference}
.cursor-dot{width:7px;height:7px;background:var(--lime);transform:translate(-50%,-50%)}
.cursor-ring{width:38px;height:38px;border:1px solid rgba(242,242,240,.6);transform:translate(-50%,-50%);
  transition:width .25s var(--ease),height .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease)}
.cursor-ring.hot{width:60px;height:60px;border-color:var(--lime);background:rgba(198,242,78,.08)}
body.has-cursor{cursor:none}
body.has-cursor a,body.has-cursor button,body.has-cursor input,body.has-cursor textarea,body.has-cursor label{cursor:none}

/* ---------- 7. Header / Nav ---------- */
.header{position:fixed;top:0;left:0;right:0;z-index:100;padding:18px 0;
  border-bottom:1px solid transparent;
  transition:background .4s var(--ease),border-color .4s var(--ease),padding .4s var(--ease);min-height:64px}
.header.scrolled{background:rgba(11,11,13,.72);backdrop-filter:blur(14px);border-bottom-color:var(--border);padding:12px 0}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--font-display);font-weight:700;font-size:1.15rem;letter-spacing:-.02em}
.brand .logo{width:34px;height:38px;flex:none}
.brand-word{white-space:nowrap}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links .lnk{font-size:.95rem;color:var(--muted);position:relative;transition:color .3s var(--ease);display:inline-flex;align-items:center;gap:.5em}
.nav-links .lnk::after{content:"";position:absolute;left:0;bottom:-5px;height:1px;width:0;background:var(--lime);transition:width .3s var(--ease)}
.nav-links .lnk:hover{color:var(--text)}
.nav-links .lnk:hover::after,.nav-links .lnk.active::after{width:100%}
.nav-links .lnk.active{color:var(--text)}
.nav-links .lnk-product{color:var(--text)}
.pro-chip{font-family:var(--font-display);font-weight:700;font-size:.58rem;color:#0B0B0D;background:var(--lime);padding:2px 6px;border-radius:6px;letter-spacing:.06em;line-height:1}
.nav-cta{font-size:.92rem;padding:.6em 1.2em}
.burger{display:none;flex-direction:column;gap:5px;padding:8px}
.burger span{width:24px;height:2px;background:var(--text);transition:.3s var(--ease)}

/* Menú móvil */
.mobile-menu{position:fixed;inset:0;z-index:120;background:rgba(11,11,13,.97);backdrop-filter:blur(8px);
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:10px;
  opacity:0;pointer-events:none;transition:opacity .4s var(--ease)}
.mobile-menu.open{opacity:1;pointer-events:auto}
.mobile-menu a{font-family:var(--font-display);font-weight:600;font-size:1.8rem;color:var(--text);padding:.25em;display:inline-flex;align-items:center;gap:.4em}
.mobile-menu a:hover{color:var(--lime)}
.mobile-menu .close{position:absolute;top:24px;right:28px;font-size:2.4rem;color:var(--muted);line-height:1}

/* ---------- 8. Footer ---------- */
.footer{border-top:1px solid var(--border);padding:64px 0 36px;margin-top:60px;position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:clamp(28px,5vw,64px)}
.foot-brand .brand{margin-bottom:16px}
.foot-tag{color:var(--muted);font-size:.92rem;max-width:42ch;margin-bottom:18px}
.foot-contact{display:flex;flex-direction:column;gap:6px}
.foot-contact a{color:var(--text);font-size:.92rem;width:max-content;transition:color .3s var(--ease)}
.foot-contact a:hover{color:var(--lime)}
.foot-col h4{font-family:var(--font-display);font-size:.95rem;margin-bottom:14px}
.foot-col a{display:block;color:var(--muted);font-size:.9rem;padding:5px 0;transition:color .3s var(--ease)}
.foot-col a:hover{color:var(--lime)}
.foot-copy{color:var(--muted);font-size:.82rem;text-align:center;margin-top:48px;border-top:1px solid var(--border);padding-top:24px}

/* ---------- 9. Botón flotante ---------- */
.float-cta{position:fixed;right:22px;bottom:22px;z-index:90;display:inline-flex;align-items:center;gap:.6em;
  background:var(--lime);color:#0B0B0D;font-family:var(--font-display);font-weight:600;padding:.85em 1.3em;border-radius:100px;
  box-shadow:0 12px 36px -8px rgba(198,242,78,.5);
  transform:translateY(120px);opacity:0;transition:transform .5s var(--ease-bounce),opacity .4s var(--ease),box-shadow .3s var(--ease)}
.float-cta.show{transform:none;opacity:1}
.float-cta:hover{box-shadow:0 16px 44px -8px rgba(198,242,78,.7)}
.float-cta svg{width:1.25em;height:1.25em}

/* ---------- 10. Motivo isométrico (rejilla de fondo) ---------- */
.iso-grid{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(198,242,78,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(198,242,78,.04) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 0%,#000,transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000,transparent 70%)}

/* ---------- 11. Tarjetas comunes ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);transition:transform .4s var(--ease),border-color .4s var(--ease)}
.card:hover{transform:translateY(-4px);border-color:#3a3a45}

/* ---------- 12. Responsive base ---------- */
@media(max-width:980px){
  .nav-links{display:none}
  .burger{display:flex}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1 / -1}
}
@media(max-width:560px){
  .foot-grid{grid-template-columns:1fr}
  .float-cta span{display:none}
  .float-cta{padding:1em}
}

/* ---------- 13. Movimiento reducido ---------- */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto}
  .reveal{clip-path:none;opacity:1;transform:none}
  .cursor-dot,.cursor-ring{display:none}
  body.has-cursor{cursor:auto}
}