/* AI Hackathon overlay — assimilateai.org × ComputeBD
   World: the dark "3D data wave" poster, dropped over ComputeBD's light page.
   CSP-safe: external file, self-hosted fonts only. */

@font-face{font-family:"Plus Jakarta Sans";font-style:normal;font-display:swap;font-weight:200 800;src:url(/fonts/plus-jakarta-sans-latin-wght-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Anek Bangla";font-style:normal;font-display:swap;font-weight:100 800;src:url(/fonts/anek-bangla-bengali-wght-normal.woff2) format("woff2");unicode-range:U+0951-0952,U+0964-0965,U+0980-09FE,U+1CF7,U+200C-200D,U+20B9,U+25CC}

@property --hk-accent{syntax:"<color>";inherits:true;initial-value:#6ff2a8}

.hk{
  --hk-ink:#02060b;
  --hk-deep:#061522;
  --hk-text:#eef4f7;
  --hk-soft:#c9d8e1;
  --hk-mute:#9db2c0;
  --hk-line:rgba(146,190,211,.2);
  --hk-ease:cubic-bezier(.16,1,.3,1);
  --hk-accent:#6ff2a8;
  --hk-cycle:5200ms;
  position:fixed;inset:0;z-index:2000;
  display:grid;place-items:center;
  padding:24px;
  font-family:"Plus Jakarta Sans","Segoe UI Variable Text",ui-sans-serif,system-ui,sans-serif;
  color:var(--hk-text);
  transition:--hk-accent .9s var(--hk-ease);
}
.hk[hidden]{display:none}
.hk[lang="bn"],.hk[data-lang="bn"]{font-family:"Anek Bangla","Plus Jakarta Sans",ui-sans-serif,sans-serif;font-weight:500}
.hk *{box-sizing:border-box}
.hk ::selection{background:var(--hk-accent);color:var(--hk-ink)}

/* ---------- scrim ---------- */
/* Nearly clear: the website behind stays visible down both sides of the card. */
.hk-scrim{
  position:absolute;inset:0;
  background:rgba(15,23,42,.10);
  opacity:0;transition:opacity .5s var(--hk-ease);
}
.hk.is-in .hk-scrim{opacity:1}

/* ---------- card ---------- */
.hk-card{
  position:relative;isolation:isolate;overflow:hidden;
  width:min(1080px,100%);height:min(790px,100%);overflow-y:auto;
  border-radius:28px;
  border:1px solid var(--hk-line);
  background:radial-gradient(circle at 50% 78%,#07192a 0,var(--hk-ink) 58%,#01040a 100%);
  box-shadow:0 2px 0 rgba(255,255,255,.04) inset,0 48px 120px -20px rgba(0,0,0,.7),0 12px 32px rgba(0,0,0,.4);
  display:grid;grid-template-rows:auto 1fr auto auto auto;
  opacity:0;transform:translateY(28px) scale(.965);filter:blur(14px);
  transition:opacity .6s var(--hk-ease),transform .8s var(--hk-ease),filter .7s var(--hk-ease);
}
.hk.is-in .hk-card{opacity:1;transform:none;filter:none}
.hk.is-out .hk-card{opacity:0;transform:translateY(12px) scale(.985);filter:blur(6px);transition-duration:.3s}
.hk.is-out .hk-scrim{opacity:0;transition-duration:.3s}

#hk-gl{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:-3}
.hk-grid{
  position:absolute;inset:0;z-index:-2;pointer-events:none;opacity:.34;
  background-image:linear-gradient(rgba(70,135,163,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(70,135,163,.09) 1px,transparent 1px);
  background-size:27px 27px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,.5) 55%,transparent 85%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,.5) 55%,transparent 85%);
}
.hk-vignette{
  position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(ellipse 70% 60% at 22% 30%,rgba(2,6,11,.55),transparent 70%),
    radial-gradient(circle at 50% 70%,transparent 30%,rgba(0,0,0,.55) 100%);
}

/* ---------- header ---------- */
.hk-head{display:flex;align-items:center;justify-content:space-between;padding:22px 28px 0 36px}
.hk-org{display:flex;align-items:center;gap:12px;font-size:14px;font-weight:700;letter-spacing:.01em;color:var(--hk-text);text-decoration:none}
.hk-bars{display:flex;gap:3px;align-items:center;height:22px}
.hk-bars i{display:block;width:2px;height:20px;background:var(--hk-accent);box-shadow:0 0 10px color-mix(in srgb,var(--hk-accent) 70%,transparent);transform-origin:50% 100%;animation:hk-bars 1.4s ease-in-out infinite alternate}
.hk-bars i:nth-child(2){animation-delay:.12s}.hk-bars i:nth-child(3){animation-delay:.24s}.hk-bars i:nth-child(4){animation-delay:.36s}.hk-bars i:nth-child(5){animation-delay:.48s}.hk-bars i:nth-child(6){animation-delay:.6s}
@keyframes hk-bars{from{transform:scaleY(.4);opacity:.5}to{transform:scaleY(1.1);opacity:1}}

.hk-x{
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;
  color:var(--hk-text);background:rgba(2,6,11,.45);
  border:1px solid rgba(185,200,210,.35);
  transition:background .2s,border-color .2s,transform .5s var(--hk-ease);
}
.hk-x:hover{background:var(--hk-text);color:var(--hk-ink);border-color:var(--hk-text);transform:rotate(90deg)}
.hk-x svg{width:18px;height:18px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round}

/* ---------- main ---------- */
.hk-main{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:clamp(24px,4vw,56px);
  padding:clamp(8px,2vh,26px) 36px 0;align-items:center;min-height:0;
}
.hk h2.hk-title{margin:0;color:var(--hk-text)!important;font-weight:800;line-height:.94;letter-spacing:-.04em;font-size:clamp(46px,6.6vw,78px);text-wrap:balance}
.hk-title .ln{display:block;overflow:hidden;padding:.04em .06em .1em 0;margin:-.04em 0 -.1em}
.hk-title .ln>span{display:block}
.hk-title .ln:first-child{color:var(--hk-accent)!important;transition:color .9s var(--hk-ease);text-shadow:0 0 60px color-mix(in srgb,var(--hk-accent) 35%,transparent)}
.hk[data-lang="bn"] .hk-title{letter-spacing:0;line-height:1.12;font-size:clamp(40px,5.6vw,66px)}
.hk .hk-sub{margin:18px 0 0;font-size:clamp(16px,1.5vw,19px);line-height:1.35;font-weight:600;color:var(--hk-text)!important;max-width:30ch;text-wrap:balance}
.hk .hk-line{margin:10px 0 0;max-width:46ch;font-size:13.5px;line-height:1.6;color:var(--hk-soft)!important;text-wrap:pretty}
.hk-line b{color:var(--hk-text);font-weight:700}

/* ---------- prize ---------- */
.hk .hk-amt{margin:16px 0 0;font-family:"Plus Jakarta Sans","Anek Bangla",sans-serif;font-weight:800;letter-spacing:-.04em;line-height:1;font-size:clamp(16px,1.8vw,22px);color:var(--hk-accent)!important;transition:color .9s var(--hk-ease);text-shadow:0 0 50px color-mix(in srgb,var(--hk-accent) 30%,transparent)}
.hk[data-lang="bn"] .hk-amt{font-family:"Anek Bangla","Plus Jakarta Sans",sans-serif;letter-spacing:0;font-size:clamp(16px,1.6vw,20px);white-space:nowrap}
.hk .hk-cap{margin:8px 0 0;font-size:11px;line-height:1.4;color:var(--hk-soft)!important}
.hk-matrix{padding:0 36px}
.hk .hk-disc{margin:3px 0 0;font-size:9.5px;line-height:1.4;color:var(--hk-mute)!important}
.hk-disc a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.hk-disc a:hover{color:var(--hk-text)}

/* ---------- tracks ---------- */
.hk-tracks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:0;padding:0;list-style:none}
.hk-tracks>li{display:flex}
.hk-track{
  position:relative;display:block;width:100%;text-align:left;cursor:pointer;
  font:inherit;color:var(--hk-soft);
  padding:10px 0 0;border-radius:0;
  border:0;background:transparent;
  transition:background .4s var(--hk-ease),border-color .4s var(--hk-ease),color .3s;
  overflow:hidden;
}
.hk-track:hover,.hk-track:focus-visible{color:var(--hk-text)}
.hk-track[aria-pressed="true"]{color:var(--hk-text)}
.hk-track[aria-pressed="true"] .hk-tname{color:var(--tc)}
.hk-track:not([aria-pressed="true"]){opacity:.72}
.hk-track{transition:opacity .35s var(--hk-ease),color .3s}
.hk-track:hover,.hk-track:focus-visible{opacity:1}
.hk-orglink{color:var(--hk-text);font-weight:700;text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--hk-accent) 70%,transparent);text-underline-offset:3px}
.hk-orglink:hover{text-decoration-color:var(--hk-accent)}
.hk-trow{display:flex;flex-direction:column;align-items:flex-start;gap:4px}
.hk-tname{font-size:10px;font-weight:700;letter-spacing:-.015em;line-height:1.2}
.hk[data-lang="bn"] .hk-tname{letter-spacing:0}
.hk-chips{display:flex;gap:6px;flex-shrink:0}
.hk-chips b{
  font-size:7.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;
  padding:2px 5px;border-radius:99px;border:1px solid color-mix(in srgb,var(--tc) 55%,transparent);color:var(--tc);
}
.hk-tdesc{display:block}
.hk-tdesc>span{display:block;padding-top:4px;font-size:9px;line-height:1.45;color:var(--hk-soft);text-wrap:pretty}

/* ---------- footer ---------- */
.hk-foot{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:0 36px 26px;margin-top:16px}
.hk-cta{
  display:inline-flex;align-items:center;gap:12px;min-height:48px;padding:0 24px 0 26px;border-radius:99px;
  font-size:15px;font-weight:700;letter-spacing:-.005em;text-decoration:none;
  color:var(--hk-ink);background:var(--hk-accent);
  box-shadow:0 10px 30px -8px color-mix(in srgb,var(--hk-accent) 60%,transparent),0 2px 6px rgba(0,0,0,.3);
  transition:background .9s var(--hk-ease),transform .4s var(--hk-ease),box-shadow .3s;
}
.hk-cta svg{width:18px;height:18px;stroke:currentColor;stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform .4s var(--hk-ease)}
.hk-cta:hover{transform:translateY(-2px)}
.hk-cta:hover svg{transform:translateX(4px)}
.hk-partner{display:flex;align-items:center;gap:14px;font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--hk-mute)}
.hk-partner img{display:block;height:24px;width:auto}
.hk-partner a{display:flex;align-items:center;border-radius:6px}

/* ---------- focus ---------- */
.hk :focus-visible{outline:2px solid var(--hk-accent)!important;outline-offset:3px!important;box-shadow:none}
.hk-card{scrollbar-width:thin;scrollbar-color:rgba(146,190,211,.4) transparent}

/* ---------- entrance choreography ---------- */
.hk [data-r]{opacity:0;transform:translateY(18px);filter:blur(6px);transition:opacity .7s var(--hk-ease),transform .9s var(--hk-ease),filter .7s var(--hk-ease);transition-delay:calc(var(--d,0) * 1ms)}
.hk.is-in [data-r]{opacity:1;transform:none;filter:none}
.hk .ln>span{transform:translateY(105%);transition:transform 1s var(--hk-ease);transition-delay:calc(var(--d,0) * 1ms)}
.hk.is-in .ln>span{transform:none}

/* ---------- re-open pill ---------- */
.hk-pill{
  position:fixed;left:20px;bottom:20px;z-index:1900;
  display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 18px 0 14px;border-radius:99px;
  font:700 13.5px/1 "Plus Jakarta Sans",ui-sans-serif,system-ui,sans-serif;letter-spacing:.01em;color:#eef4f7;
  background:#02060b;border:1px solid rgba(146,190,211,.35);cursor:pointer;
  box-shadow:0 14px 34px -10px rgba(2,6,11,.6),0 3px 8px rgba(2,6,11,.3);
  opacity:0;transform:translateY(14px);transition:opacity .5s cubic-bezier(.16,1,.3,1),transform .6s cubic-bezier(.16,1,.3,1),border-color .2s;
}
.hk-pill[data-lang="bn"]{font-family:"Anek Bangla","Plus Jakarta Sans",sans-serif}
.hk-pill.is-in{opacity:1;transform:none}
.hk-pill:hover{border-color:#72f6f1}
.hk-pill:focus-visible{outline:2px solid #72f6f1;outline-offset:3px}
.hk-pill i{width:8px;height:8px;border-radius:50%;background:#72f6f1;box-shadow:0 0 0 0 rgba(114,246,241,.6);animation:hk-ping 1.8s ease-out infinite}
@keyframes hk-ping{to{box-shadow:0 0 0 10px rgba(114,246,241,0)}}
.hk-pill[hidden]{display:none}

html.hk-lock,html.hk-lock body{overflow:hidden}

/* ---------- phones & narrow ---------- */
@media (max-width:860px){
  .hk{padding:0}
  .hk-card{width:100%;height:100%;height:100dvh;border-radius:0;border:0;overflow-y:auto;overscroll-behavior:contain;grid-template-rows:auto auto auto auto}
  #hk-gl,.hk-grid,.hk-vignette{position:fixed}
  .hk-card{position:relative}
  .hk-head{position:sticky;top:0;z-index:5;padding:14px 14px 0 20px;background:linear-gradient(to bottom,rgba(2,6,11,.85),transparent)}
  .hk-main{grid-template-columns:1fr;gap:18px;padding:6px 20px 0;align-items:start;min-height:auto}
  .hk .hk-cap{white-space:normal}
  .hk-matrix{padding:14px 20px 0}
  .hk-tracks{grid-template-columns:1fr;gap:8px}
  .hk-title{font-size:clamp(46px,14vw,72px)}
  .hk[data-lang="bn"] .hk-title{font-size:clamp(40px,12vw,60px)}
  .hk .hk-amt{font-size:clamp(18px,5.5vw,24px)}
  .hk-sub{margin-top:14px;max-width:none}
  .hk-line{font-size:13.5px;margin-top:10px}
  .hk-track{padding:10px 0 4px}
  .hk-foot{padding:6px 20px 28px;margin-top:20px;flex-direction:column;align-items:stretch}
  .hk-cta{justify-content:center}
  .hk-partner{justify-content:space-between}
  .hk-pill{left:14px;bottom:14px}
}
@media (max-height:700px) and (min-width:861px){
  .hk{padding:12px}
  .hk-title{font-size:clamp(44px,6vw,64px)}
  .hk-sub{margin-top:12px}.hk-line{margin-top:8px}
  .hk-track{padding:9px 0 0}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  .hk,.hk *{animation:none!important;transition-duration:.01ms!important;transition-delay:0ms!important}
  .hk-card{filter:none;transform:none}
  .hk [data-r],.hk .ln>span{opacity:1;transform:none;filter:none}
  .hk-pill i{animation:none}
}
.hk[data-lang="bn"] .hk-title .ln+.ln{margin-top:-.2em}
.hk-tracks,.hk-cap,.hk-disc,.hk-line,.hk-sub{text-shadow:0 1px 8px rgba(2,6,11,.95),0 0 2px rgba(2,6,11,.8)}
.hk .hk-cap{margin-top:14px;white-space:nowrap}
@media (max-width:860px){.hk .hk-cap,.hk .hk-amt{white-space:normal}}


/* ---------- footer (v9.60: the ComputeBD banner moved to the use-case pages) ---------- */
.hk .hk-foot{padding:0 36px 32px;margin-top:14px}
@media (max-width:860px){.hk .hk-foot{padding:0 20px 24px}}