/* Tech Play and Go — tema tecnológico: azul, morado y verde metálicos */
:root{
  --bg:#020a2a; --bg-2:#051445; --card:rgba(3,13,50,.76); --card-solid:#051445;
  --line:rgba(148,163,255,.17); --line-strong:rgba(148,163,255,.32);
  --text:#e8ecf8; --muted:#9aa6c8; --link:#7db2ff;

  --blue:#4f8cff;   --blue-2:#93c5fd;
  --purple:#8b5cf6; --purple-2:#c4b5fd;
  --green:#2dd4a0;  --green-2:#86efc9;

  --metal-blue:linear-gradient(135deg,#1d3a8f 0%,#4f8cff 36%,#c3dbff 50%,#3b6fe0 63%,#1a2f78 100%);
  --metal-purple:linear-gradient(135deg,#3b1a8a 0%,#8b5cf6 36%,#e0d3ff 50%,#7444e0 63%,#2e1470 100%);
  --metal-green:linear-gradient(135deg,#075b45 0%,#2dd4a0 36%,#ccffea 50%,#1fb98a 63%,#064a38 100%);
  --brand:linear-gradient(90deg,#60a5fa 0%,#a78bfa 50%,#34d399 100%);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--text);font-size:17px;line-height:1.7;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  min-height:100vh;
}
/* ---------- Fondo: círculos tecnológicos azules, con un movimiento muy lento ---------- */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;background:#00020e}
.bg-img{position:absolute;inset:-4%;will-change:transform;
  background:
    linear-gradient(180deg,rgba(0,2,16,.06) 0%,rgba(0,2,16,.24) 100%),
    url("fondo-hud.jpg") center / cover no-repeat;
  animation:derivar 45s ease-in-out infinite alternate}
@keyframes derivar{
  from{transform:scale(1) translate3d(0,0,0)}
  to{transform:scale(1.08) translate3d(-1.5%,1.2%,0)}
}
@media (max-width:760px){
  /* En celular se muestra la zona derecha, donde están los círculos */
  .bg-img{background-position:center, 82% center}
}
@media (prefers-reduced-motion:reduce){
  .bg-img{animation:none}
}
a{color:var(--link)}
a:hover{color:var(--green-2)}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:6px}
.wrap{max-width:1000px;margin:0 auto;padding:0 20px}

/* ---------- Cabecera ---------- */
header.site{position:sticky;top:0;z-index:20;background:rgba(2,10,42,.76);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
header.site::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:var(--brand);opacity:.55}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;letter-spacing:-.01em;text-decoration:none;color:var(--text)}
.logo svg{width:30px;height:30px;flex:none}
.logo .wm span{background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent}
nav a{margin-left:20px;text-decoration:none;color:var(--muted);font-weight:600;font-size:.95rem;transition:color .2s}
nav a:hover{color:var(--text)}

/* ---------- Portada ---------- */
.hero{padding:76px 0 34px;text-align:center}
.eyebrow{display:inline-block;padding:6px 14px;border-radius:999px;border:1px solid var(--line-strong);
  background:rgba(79,140,255,.08);color:var(--blue-2);font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.hero h1{font-size:clamp(2.1rem,5.4vw,3.6rem);line-height:1.1;letter-spacing:-.03em;margin:20px auto 16px;max-width:820px}
.grad{background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:1.15rem;color:var(--muted);max-width:640px;margin:0 auto}
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:26px}
.chips span{padding:7px 14px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-size:.88rem;color:var(--muted)}
.chips b{color:var(--green-2)}

.notice{background:rgba(45,212,160,.08);border:1px solid rgba(45,212,160,.28);border-left:4px solid var(--green);
  padding:12px 16px;border-radius:10px;font-size:.92rem;color:#c3f0de;margin:0 0 1.5rem}
.notice a{color:var(--green-2)}
.home-notice{margin:26px 0 8px}

h2.section{font-size:1.6rem;letter-spacing:-.02em;margin:38px 0 6px}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0}
.filters button{cursor:pointer;font:inherit;font-size:.86rem;font-weight:600;color:var(--muted);padding:7px 15px;border-radius:999px;
  background:var(--card);border:1px solid var(--line);transition:all .2s}
.filters button:hover{color:var(--text);border-color:var(--line-strong)}
.filters button[aria-pressed="true"]{color:#04131a;background:var(--metal-blue);border-color:transparent}

/* ---------- Tarjetas ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(285px,1fr));gap:20px;margin:22px 0 50px}
.card{--a:var(--blue);--a2:var(--blue-2);--m:var(--metal-blue);
  position:relative;display:flex;flex-direction:column;overflow:hidden;text-decoration:none;color:var(--text);
  background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px 22px 22px;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.card.c2{--a:var(--purple);--a2:var(--purple-2);--m:var(--metal-purple)}
.card.c3{--a:var(--green);--a2:var(--green-2);--m:var(--metal-green)}
.card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--m)}
.card:hover{transform:translateY(-4px);border-color:var(--a);box-shadow:0 18px 44px -18px var(--a)}
.card .ico{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;background:var(--m);color:#050d1c;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.55),0 6px 18px -8px var(--a);margin-bottom:16px}
.card .ico svg{width:24px;height:24px}
.card .tag{font-size:.72rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--a2);margin-bottom:6px}
.card h3{margin:0 0 8px;font-size:1.13rem;line-height:1.3}
.card p{margin:0 0 18px;color:var(--muted);font-size:.95rem;line-height:1.55;flex:1}
.card .more{font-weight:700;font-size:.92rem;color:var(--a2)}
.card .more::after{content:" →";transition:margin-left .2s}
.card:hover .more::after{margin-left:4px}

/* ---------- Botones ---------- */
.btn{display:inline-block;padding:12px 24px;border-radius:11px;font-weight:800;text-decoration:none;text-align:center;color:#04140f;
  background:linear-gradient(135deg,#1fb98a 0%,#7cf0c6 45%,#d6fff0 52%,#34d3a0 60%,#189c74 100%);
  box-shadow:0 10px 26px -12px var(--green),inset 0 1px 0 rgba(255,255,255,.6);transition:transform .2s,box-shadow .2s,filter .2s}
.btn:hover{color:#04140f;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 30px -12px var(--green)}
.btn.ghost{background:transparent;color:var(--green-2);border:1.5px solid var(--green);box-shadow:none}
.btn.ghost:hover{background:rgba(45,212,160,.12);color:var(--green-2)}

/* ---------- Artículos ---------- */
article{position:relative;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:38px 40px;margin:36px 0 26px;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
article::before{content:"";position:absolute;left:24px;right:24px;top:0;height:3px;border-radius:0 0 4px 4px;background:var(--brand)}
.art-head{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.art-icon{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:var(--metal-blue);color:#050d1c;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.55)}
.art-icon svg{width:24px;height:24px}
.pill{font-size:.72rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;padding:5px 12px;border-radius:999px;
  color:var(--purple-2);background:rgba(139,92,246,.14);border:1px solid rgba(139,92,246,.35)}
article h1{font-size:clamp(1.7rem,3.6vw,2.4rem);line-height:1.2;letter-spacing:-.02em;margin:10px 0 6px}
article .meta{color:var(--muted);font-size:.9rem;margin:0 0 1.4rem}
article h2{margin:2.2rem 0 .6rem;font-size:1.3rem;letter-spacing:-.01em;padding-left:14px;position:relative}
article h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--blue),var(--purple),var(--green))}
article p{color:#d3daee}
article ul{padding-left:1.3rem}
article li{margin:.45rem 0;color:#d3daee}
article li::marker{color:var(--green)}
article strong{color:#fff}
.cta-box{position:relative;margin:2rem 0 .4rem;padding:26px 20px;text-align:center;border-radius:16px;
  background:linear-gradient(180deg,rgba(79,140,255,.10),rgba(139,92,246,.08));border:1px solid var(--line-strong)}
.cta-box p{margin:0 0 14px;color:var(--text);font-weight:600}
.related h2.section{margin-top:26px}

/* ---------- Barra lateral ---------- */
.wrap.wide{max-width:1200px}
.layout{display:grid;grid-template-columns:290px minmax(0,1fr);gap:28px;align-items:start}
.content{min-width:0;grid-column:2;grid-row:1}
.sidebar{grid-column:1;grid-row:1;position:sticky;top:78px;margin:36px 0 26px;display:grid;gap:16px;max-height:calc(100vh - 96px);overflow-y:auto;
  scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent;padding-right:2px}
.sb-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 14px 12px;position:relative;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.sb-card::before{content:"";position:absolute;left:16px;right:16px;top:0;height:3px;border-radius:0 0 4px 4px;background:var(--brand)}
.sb-title{margin:0 0 10px 8px;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:800}
.sb-list{list-style:none;margin:0;padding:0;display:grid;gap:3px}
.sb-list a{display:flex;align-items:center;gap:10px;padding:8px 8px;border-radius:11px;text-decoration:none;color:var(--text);
  font-size:.9rem;line-height:1.3;border:1px solid transparent;transition:background .2s,border-color .2s}
.sb-list a:hover{background:rgba(148,163,255,.09);border-color:var(--line);color:#fff}
.sb-list a.active{background:linear-gradient(90deg,rgba(79,140,255,.20),rgba(139,92,246,.14));border-color:var(--line-strong);color:#fff;font-weight:700}
.sb-ico{flex:none;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--metal-blue);color:#050d1c;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5)}
.sb-ico svg{width:16px;height:16px}
.sb-list li:nth-child(3n+2) .sb-ico{background:var(--metal-purple)}
.sb-list li:nth-child(3n) .sb-ico{background:var(--metal-green)}
.sb-note{margin:0 4px;font-size:.78rem;line-height:1.5;color:var(--muted)}
.sb-note a{color:var(--muted)}
.pick{scroll-margin-top:90px}
.menu-btn,.sb-close{display:none}
@media (max-width:980px){
  .layout{grid-template-columns:minmax(0,1fr);gap:0}
  .content,.sidebar{grid-column:auto;grid-row:auto}
  .sidebar{position:static;max-height:none;overflow:visible;margin:0 0 40px}
  /* Con JavaScript, el menú lateral se abre desde la izquierda con el botón "Menú" */
  .js .menu-btn{display:inline-flex;align-items:center;gap:8px;cursor:pointer;font:inherit;font-weight:700;font-size:.9rem;
    color:var(--text);background:var(--card);border:1px solid var(--line-strong);border-radius:11px;padding:7px 12px}
  .js .menu-btn svg{width:20px;height:20px}
  .js header.site .wrap{justify-content:flex-start}
  .js header.site nav{margin-left:auto}
  .js .sidebar{position:fixed;top:0;left:0;bottom:0;z-index:40;width:min(320px,86vw);max-height:none;margin:0;padding:14px 12px 20px;
    overflow-y:auto;align-content:start;background:var(--bg);border-right:1px solid var(--line-strong);
    box-shadow:20px 0 50px -20px #000;transform:translateX(-105%);visibility:hidden;transition:transform .25s ease,visibility .25s}
  .js.menu-open .sidebar{transform:none;visibility:visible}
  .js .sb-close{display:grid;place-items:center;justify-self:end;width:40px;height:40px;cursor:pointer;color:var(--text);
    background:var(--card);border:1px solid var(--line-strong);border-radius:11px}
  .js .sb-close svg{width:20px;height:20px}
  .sb-backdrop{position:fixed;inset:0;z-index:35;background:rgba(0,2,14,.6)}
  .js.menu-open body{overflow:hidden}
}
@media (max-width:640px){
  /* En celular, los enlaces de la cabecera ya están dentro del menú */
  .js header.site nav{display:none}
}

/* ---------- Producto destacado ---------- */
.pick{position:relative;overflow:hidden;margin:1.4rem 0 1.6rem;padding:26px 26px 22px;border-radius:18px;
  background:linear-gradient(160deg,rgba(139,92,246,.16),rgba(79,140,255,.10) 55%,rgba(45,212,160,.10));
  border:1px solid rgba(139,92,246,.45);box-shadow:0 24px 50px -30px var(--purple)}
.pick::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--metal-purple)}
.pill-green{color:var(--green-2);background:rgba(45,212,160,.12);border-color:rgba(45,212,160,.4)}
.pick-grid{display:grid;grid-template-columns:250px 1fr;gap:26px;align-items:center;margin-top:14px}
.pick-photo{display:block;aspect-ratio:1/1;border-radius:16px;overflow:hidden;background:#fff;
  border:1px solid rgba(139,92,246,.5);box-shadow:0 18px 40px -22px var(--purple),0 0 0 4px rgba(139,92,246,.08);transition:transform .25s ease,box-shadow .25s ease}
.pick-photo:hover{transform:translateY(-3px);box-shadow:0 24px 46px -20px var(--purple),0 0 0 4px rgba(139,92,246,.16)}
.pick-photo img{display:block;width:100%;height:100%;object-fit:contain}
.pick-photos{display:grid;gap:14px;align-content:center}
.pick-body{display:flex;align-items:center;gap:16px;margin:16px 0 6px}
.pick-grid .pick-body{margin-top:0}
.pick-ico{flex:none;width:58px;height:58px;border-radius:16px;display:grid;place-items:center;background:var(--metal-purple);color:#050d1c;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.55),0 8px 22px -10px var(--purple)}
.pick-ico svg{width:30px;height:30px}
.pick + .pick{margin-top:1.6rem}
.pick-video{margin-top:22px}
.video-frame{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#000;border:1px solid var(--line-strong);
  box-shadow:0 18px 40px -24px var(--blue)}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
@media (max-width:640px){.pick-grid{grid-template-columns:1fr}.pick-photo{max-width:280px;margin:0 auto}}
.pick h3{margin:0;font-size:1.3rem;line-height:1.25;color:#fff}
.pick-sub{margin:2px 0 0;color:var(--muted);font-size:.95rem}
.pick ul{margin:12px 0;padding-left:1.2rem}
.pick li{margin:.35rem 0;color:#d3daee;font-size:.97rem}
.pick li::marker{color:var(--green)}
.pick-why{margin:.6rem 0 1rem;font-size:.88rem;color:var(--muted)}
.pick-actions{display:flex;flex-wrap:wrap;gap:12px}
.pick-note{margin:12px 0 0;font-size:.8rem;color:var(--muted)}

/* ---------- Pie ---------- */
footer.site{position:relative;margin-top:30px;border-top:1px solid var(--line);background:rgba(2,10,42,.84);padding:30px 0;color:var(--muted);font-size:.88rem}
footer.site::before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;background:var(--brand);opacity:.55}
footer.site a{color:var(--muted)}
footer.site a:hover{color:var(--green-2)}
footer.site .links a{margin-right:18px}

@media (max-width:640px){
  body{font-size:16.5px}
  .hero{padding:52px 0 22px}
  article{padding:26px 20px;border-radius:16px}
  nav a{margin-left:14px;font-size:.9rem}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
  .card:hover,.btn:hover{transform:none}
}