/* Y-Learn Robotics :: Circuit Playground
   Design system: y-learn-circuit-playground
   Self-owned document styles. No external CSS is loaded on this page. */

@font-face{font-family:'Fredoka';font-style:normal;font-weight:400 700;font-display:swap;src:url('fonts/fredoka.woff2') format('woff2');}
@font-face{font-family:'Nunito';font-style:normal;font-weight:400 800;font-display:swap;src:url('fonts/nunito.woff2') format('woff2');}

:root{
  --bg:#F3F7FC; --surface:#FFFFFF; --ink:#101F38; --accent:#FF6A13; --deep:#0B1730;
  --cyan:#00B4D8; --violet:#7A3CF0; --magenta:#E5177B; --lime:#3FD16B; --amber:#FFB81E;
  --whatsapp:#25D366; --muted:#5A6B85; --hairline:#D9E3F0;
  --accent-press:#EE5C08; --whatsapp-press:#1FBE5B;
  --on-deep:#EAF2FF; --on-deep-soft:#A9BEDC; --on-warm:#3A1B02;
  --font-display:'Fredoka',ui-rounded,'Segoe UI',sans-serif;
  --font-body:'Nunito',ui-rounded,'Segoe UI',sans-serif;
  --r-sm:12px; --r-md:22px; --r-pill:999px;
  --s-xs:8px; --s-sm:16px; --s-md:28px; --s-lg:56px; --s-xl:104px;
  --wrap:1180px;
  --shadow:0 18px 44px rgba(16,31,56,.10);
  --shadow-sm:0 8px 20px rgba(16,31,56,.08);
  --spectrum:linear-gradient(90deg,var(--cyan) 0%,var(--lime) 26%,var(--amber) 50%,var(--accent) 72%,var(--magenta) 88%,var(--violet) 100%);
  /* Text-safe spectrum: stays above 3:1 on the deep navy ground. */
  --spectrum-text:linear-gradient(90deg,#38D2F0 0%,var(--lime) 34%,var(--amber) 68%,#FF8A3D 100%);
}

/* Reset kept at zero specificity so component rules always win. */
:where(*,*::before,*::after){box-sizing:border-box;}
:where(html,body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd){margin:0;padding:0;}
:where(ul,ol){list-style:none;}
:where(img,svg){display:block;max-width:100%;}
:where(a){color:inherit;text-decoration:none;}
:where(button){font:inherit;color:inherit;background:none;border:0;}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  background:var(--bg); color:var(--ink);
  font-family:var(--font-body); font-weight:400; font-size:17px; line-height:1.65;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}

.yl-wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:24px;}
.yl-skip{position:absolute;left:-9999px;}
.yl-skip:focus{left:16px;top:16px;z-index:99;background:var(--accent);color:#fff;padding:10px 18px;border-radius:var(--r-pill);}

h1,h2,h3,h4,.yl-display{font-family:var(--font-display);font-weight:600;letter-spacing:-.015em;}
h1{font-size:clamp(2.5rem,5.6vw,4.4rem);line-height:1.02;}
h2{font-size:clamp(2rem,3.9vw,3.1rem);line-height:1.08;}
h3{font-size:clamp(1.25rem,1.9vw,1.55rem);line-height:1.15;}
.yl-lede{font-size:clamp(1.05rem,1.35vw,1.2rem);line-height:1.62;color:var(--muted);max-width:34ch;}
.yl-body{max-width:62ch;}

/* ---------- Buttons ---------- */
.yl-btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);font-weight:600;font-size:1.02rem;line-height:1;
  padding:18px 32px;border-radius:var(--r-pill);white-space:nowrap;
  transition:transform .16s ease, box-shadow .16s ease, background-color .16s ease;
}
.yl-btn svg{width:20px;height:20px;flex:none;}
.yl-btn:active{transform:translateY(2px);}
/* Filled buttons carry ink text, not white: white on brand orange (3.0:1) and
   on WhatsApp green (2.4:1) both fail WCAG AA. Ink clears 7:1 on both. */
.yl-btn--wa{background:var(--whatsapp);color:var(--ink);box-shadow:0 10px 24px rgba(37,211,102,.32);}
.yl-btn--wa:hover{background:var(--whatsapp-press);}
.yl-btn--accent{background:var(--accent);color:var(--ink);box-shadow:0 10px 24px rgba(255,106,19,.30);}
.yl-btn--accent:hover{background:var(--accent-press);}
.yl-btn--ghost{border:2px solid var(--ink);color:var(--ink);padding:16px 30px;}
.yl-btn--ghost:hover{background:var(--ink);color:#fff;}
.yl-btn--sm{padding:12px 22px;font-size:.95rem;}
.yl-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:var(--r-pill);}

/* ---------- Logo ---------- */
.yl-logo{display:flex;align-items:center;gap:12px;}
.yl-logo img,.yl-logo svg{height:46px;width:auto;}
.yl-logo__text{font-family:var(--font-display);font-weight:700;font-size:1.22rem;letter-spacing:-.02em;line-height:1;}
.yl-logo__text span{color:var(--accent);}

/* ---------- Header ---------- */
.yl-head{
  position:sticky;top:0;z-index:50;
  background:rgba(243,247,252,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .2s ease, box-shadow .2s ease;
}
.yl-head.is-stuck{border-bottom-color:var(--hairline);box-shadow:0 6px 20px rgba(16,31,56,.05);}
.yl-head__in{display:flex;align-items:center;justify-content:space-between;gap:24px;height:82px;}
.yl-nav{display:flex;align-items:center;gap:30px;}
.yl-nav a{font-weight:700;font-size:.97rem;color:var(--ink);}
.yl-nav a:hover{color:var(--accent);}
.yl-head .yl-btn{padding:14px 24px;font-size:.96rem;}

/* ---------- Hero ---------- */
.yl-hero{position:relative;padding:clamp(36px,4.5vw,64px) 0 clamp(56px,7vw,96px);overflow:hidden;}
.yl-hero__grid{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:clamp(24px,4vw,64px);align-items:center;
}
.yl-hero h1 em{font-style:normal;color:var(--accent);}
.yl-hero .yl-lede{margin:22px 0 34px;max-width:40ch;}
.yl-hero__note{margin-top:22px;font-size:.94rem;color:var(--muted);font-weight:600;}

/* logo mark breaks its column */
.yl-hero__art{position:relative;justify-self:end;width:100%;max-width:520px;}
.yl-hero__mark{position:relative;z-index:2;width:100%;filter:drop-shadow(0 26px 50px rgba(16,31,56,.18));}
.yl-hero__mark img,.yl-hero__mark svg{width:100%;height:auto;}
.yl-hero__blob{
  position:absolute;z-index:1;top:-8%;right:-22%;width:118%;aspect-ratio:1;
  background:radial-gradient(circle at 32% 30%,rgba(0,180,216,.20),transparent 62%),
             radial-gradient(circle at 74% 66%,rgba(255,106,19,.20),transparent 60%);
  border-radius:50%;
}
.yl-hero__rails{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.5;}

/* floating chips around the mark */
.yl-chip{
  position:absolute;z-index:3;display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border-radius:var(--r-pill);padding:10px 18px;
  font-family:var(--font-display);font-weight:600;font-size:.9rem;
  box-shadow:var(--shadow-sm);
}
.yl-chip i{width:10px;height:10px;border-radius:50%;flex:none;}
.yl-chip--1{top:6%;left:-6%;}
.yl-chip--1 i{background:var(--cyan);}
.yl-chip--2{bottom:20%;left:-12%;}
.yl-chip--2 i{background:var(--lime);}
.yl-chip--3{bottom:4%;right:2%;}
.yl-chip--3 i{background:var(--violet);}

/* ---------- Circuit rail divider ---------- */
.yl-rail{height:4px;width:100%;background:var(--spectrum);border-radius:var(--r-pill);}
.yl-rail--soft{opacity:.7;}

/* ---------- Benefits bento ---------- */
.yl-why{padding:clamp(56px,7vw,96px) 0;}
.yl-why__head{max-width:46ch;margin-bottom:clamp(32px,4vw,52px);}
.yl-why__head p{margin-top:16px;color:var(--muted);font-size:1.08rem;}
.yl-bento{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;}
.yl-cell{border-radius:var(--r-md);padding:clamp(24px,2.6vw,36px);position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:flex-end;min-height:230px;}
.yl-cell h3{margin-bottom:10px;}
.yl-cell p{font-size:1rem;line-height:1.6;}
.yl-cell__ico{width:52px;height:52px;margin-bottom:auto;}

.yl-cell--a{grid-column:span 4;background:var(--deep);color:var(--on-deep);min-height:300px;}
.yl-cell--a p{color:var(--on-deep-soft);max-width:44ch;}
.yl-cell--a::after{content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(0,180,216,.30),transparent 68%);}
.yl-cell--b{grid-column:span 2;background:var(--surface);box-shadow:var(--shadow-sm);}
.yl-cell--b p{color:var(--muted);}
.yl-cell--c{grid-column:span 2;background:linear-gradient(150deg,var(--amber),var(--accent));color:var(--on-warm);}
.yl-cell--c p{color:rgba(58,27,2,.82);}
.yl-cell--d{grid-column:span 2;background:var(--surface);box-shadow:var(--shadow-sm);}
.yl-cell--d p{color:var(--muted);}
.yl-cell--e{grid-column:span 2;background:linear-gradient(150deg,var(--cyan),var(--violet));color:#fff;}
.yl-cell--e p{color:rgba(255,255,255,.82);}

/* ---------- Statement band ---------- */
.yl-band{background:var(--deep);color:#fff;padding:clamp(60px,8vw,110px) 0;position:relative;overflow:hidden;}
.yl-band__rail{position:absolute;left:0;right:0;top:0;height:4px;background:var(--spectrum);}
.yl-band__grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(28px,5vw,72px);align-items:start;}
.yl-band h2{font-size:clamp(2.1rem,4.4vw,3.5rem);}
.yl-band h2 em{font-style:normal;background:var(--spectrum-text);-webkit-background-clip:text;background-clip:text;color:transparent;}
.yl-band p{color:var(--on-deep-soft);margin-top:20px;font-size:1.08rem;max-width:52ch;}

.yl-steps{display:flex;flex-direction:column;gap:2px;}
.yl-step{display:grid;grid-template-columns:52px 1fr;gap:18px;padding:20px 0;border-top:1px solid rgba(169,190,220,.22);align-items:baseline;}
.yl-step:last-child{border-bottom:1px solid rgba(169,190,220,.22);}
.yl-step__n{font-family:var(--font-display);font-weight:700;font-size:2.1rem;line-height:1;background:var(--spectrum-text);-webkit-background-clip:text;background-clip:text;color:transparent;}
.yl-step h3{font-size:1.18rem;margin-bottom:4px;}
.yl-step p{margin-top:0;font-size:.98rem;color:var(--on-deep-soft);}

/* ---------- Contact ---------- */
.yl-contact{padding:clamp(60px,8vw,110px) 0;}
.yl-contact__panel{
  background:var(--surface);border-radius:var(--r-md);box-shadow:var(--shadow);
  padding:clamp(32px,5vw,68px);position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,4vw,60px);align-items:center;
}
.yl-contact__panel::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--spectrum);}
.yl-contact h2 em{font-style:normal;color:var(--accent);}
.yl-contact p{color:var(--muted);margin-top:16px;max-width:46ch;}
.yl-lines{display:flex;flex-direction:column;gap:14px;}
.yl-line{display:flex;align-items:center;gap:14px;padding:16px 20px;border-radius:var(--r-sm);background:var(--bg);}
.yl-line svg{width:22px;height:22px;flex:none;}
.yl-line span{font-family:var(--font-display);font-weight:600;font-size:1.02rem;word-break:break-word;}
.yl-line small{display:block;font-family:var(--font-body);font-weight:700;font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:2px;}
.yl-contact .yl-actions{margin-top:26px;}

/* ---------- Footer ---------- */
.yl-foot{background:var(--deep);color:var(--on-deep-soft);padding:clamp(40px,5vw,64px) 0 32px;}
.yl-foot__in{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;}
.yl-foot .yl-logo__text{color:#fff;}
.yl-foot a:hover{color:#fff;}
.yl-foot__links{display:flex;flex-wrap:wrap;gap:26px;font-weight:700;font-size:.95rem;}
.yl-foot__bar{margin-top:34px;padding-top:22px;border-top:1px solid rgba(169,190,220,.2);font-size:.88rem;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;}

/* ---------- Floating WhatsApp ---------- */
.yl-float{
  position:fixed;right:20px;bottom:20px;z-index:60;
  width:60px;height:60px;border-radius:50%;background:var(--whatsapp);color:var(--ink);
  display:grid;place-items:center;box-shadow:0 12px 30px rgba(37,211,102,.42);
  transition:transform .18s ease;
}
.yl-float:hover{transform:scale(1.06);}
.yl-float svg{width:30px;height:30px;}

/* ---------- Fallback page (non front page) ---------- */
.yl-fallback{padding:80px 24px;min-height:50vh;}
.yl-fallback h1{margin-bottom:20px;}

/* ---------- Motion (dial 0.55) ---------- */
.js .yl-reveal{opacity:0;transform:translateY(22px);}
.js .yl-reveal.is-in{opacity:1;transform:none;transition:opacity .6s cubic-bezier(.22,.8,.3,1),transform .6s cubic-bezier(.22,.8,.3,1);}
.js .yl-reveal[data-d="1"].is-in{transition-delay:.08s;}
.js .yl-reveal[data-d="2"].is-in{transition-delay:.16s;}
.js .yl-reveal[data-d="3"].is-in{transition-delay:.24s;}
@keyframes yl-float{0%,100%{transform:translateY(0);}50%{transform:translateY(-12px);}}
@keyframes yl-float-b{0%,100%{transform:translateY(0);}50%{transform:translateY(9px);}}
.yl-hero__mark{animation:yl-float 7s ease-in-out infinite;}
.yl-chip--1{animation:yl-float-b 6s ease-in-out infinite;}
.yl-chip--2{animation:yl-float 8s ease-in-out infinite .4s;}
.yl-chip--3{animation:yl-float-b 7.5s ease-in-out infinite .8s;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js .yl-reveal{opacity:1;transform:none;}
  .yl-hero__mark,.yl-chip{animation:none;}
  *{transition-duration:.01ms !important;}
}

/* ---------- Responsive ---------- */
@media (max-width:1000px){
  .yl-hero__grid{grid-template-columns:1fr;gap:44px;}
  .yl-hero__art{justify-self:center;max-width:400px;}
  .yl-chip--1{left:-4%;}
  .yl-chip--2{left:-8%;}
  .yl-band__grid{grid-template-columns:1fr;gap:40px;}
  .yl-contact__panel{grid-template-columns:1fr;}
  .yl-bento{grid-template-columns:repeat(4,1fr);}
  .yl-cell--a{grid-column:span 4;}
  .yl-cell--b,.yl-cell--c,.yl-cell--d,.yl-cell--e{grid-column:span 2;}
}
@media (max-width:760px){
  .yl-nav{display:none;}
  .yl-head__in{height:70px;}
  .yl-logo img,.yl-logo svg{height:38px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .yl-bento{grid-template-columns:1fr;}
  .yl-cell--a,.yl-cell--b,.yl-cell--c,.yl-cell--d,.yl-cell--e{grid-column:span 1;min-height:200px;}
  .yl-actions .yl-btn{width:100%;justify-content:center;}
  .yl-chip--1,.yl-chip--2,.yl-chip--3{display:none;}
  .yl-step{grid-template-columns:40px 1fr;gap:14px;}
  .yl-foot__in{flex-direction:column;align-items:flex-start;}
}