/* =========================================================
   FireSparx, Inc. — Design tokens
   Display: Space Grotesk · Body: IBM Plex Sans · Utility: IBM Plex Mono
   ========================================================= */
:root{
  --bg-dark: #10161A;
  --bg-dark-2: #161E23;
  --bg-light: #F7F4EC;
  --paper: #F2EFE7;
  --ink: #14191C;
  --ink-soft: #45504F;

  --ember: #FF5A36;
  --ember-2: #FFB627;

  --science: #3EA6FF;
  --tech: #B388FF;
  --engineering: #FF9F40;
  --arts: #FF4FA3;
  --math: #38D9A9;

  --line-dark: rgba(242,239,231,0.14);
  --line-light: rgba(20,25,28,0.12);

  --font-display: "Space Grotesk", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --container: 1180px;
  --ease: cubic-bezier(.16,.84,.32,1);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0;
  background: var(--bg-light);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: inherit; }
.visually-hidden{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ember);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin-bottom: 1.1em;
}
.eyebrow::before{
  content:"";
  width: 22px; height: 1px;
  background: currentColor;
  display:inline-block;
}
.on-dark .eyebrow{ color: var(--ember-2); }

.wrap{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}

button{ font-family: inherit; }

/* ---------------- Buttons ---------------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:0.55em;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  text-decoration:none;
  padding: 0.95em 1.6em;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor:pointer;
  transition: transform .35s var(--ease), background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
}
.btn:hover{ transform: translateY(-2px); }
.btn:focus-visible{ outline: 2px solid var(--ember); outline-offset: 3px; }

.btn--primary{ background: var(--ember); color: #10161A; }
.btn--primary:hover{ background: #ff744f; }

.btn--ghost-dark{ border-color: var(--line-dark); color: var(--paper); }
.btn--ghost-dark:hover{ border-color: var(--ember-2); color: var(--ember-2); }

.btn--ghost-light{ border-color: var(--line-light); color: var(--ink); }
.btn--ghost-light:hover{ border-color: var(--ember); color: var(--ember); }

.btn--on-ember{ background: var(--ink); color: var(--paper); }
.btn--on-ember:hover{ background: #232b2f; }

.btn svg{ width: 1em; height: 1em; }

/* ---------------- Nav ---------------- */
.site-nav{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(16,22,26,0.86);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line-dark);
}
.site-nav .wrap{
  display:flex;
  align-items:center;
  justify-content: space-between;
  height: 76px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 0.6em;
  text-decoration:none;
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}
.brand__mark{
  width: 30px; height: 30px;
  flex: none;
}
.brand__mark .spark-path{
  stroke: var(--ember);
  stroke-width: 6;
  fill:none;
  stroke-linecap: round;
}
.brand__mark .spark-dot{ fill: var(--ember-2); }

.nav-links{
  display:flex;
  align-items:center;
  gap: clamp(18px, 2.4vw, 34px);
  list-style:none;
  margin:0; padding:0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.nav-links a{
  text-decoration:none;
  color: var(--paper);
  opacity: 0.78;
  transition: opacity .25s var(--ease), color .25s var(--ease);
  padding: 6px 2px;
  border-bottom: 1px solid transparent;
}
.nav-links a:hover, .nav-links a:focus-visible{
  opacity:1;
  border-color: var(--ember);
  color: var(--ember-2);
}
.nav-links .btn{ text-transform: uppercase; }
.nav-toggle{
  display:none;
  background:none;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  color: var(--paper);
  width: 42px; height: 38px;
  align-items:center; justify-content:center;
  cursor:pointer;
}

@media (max-width: 860px){
  .nav-toggle{ display:flex; }
  .nav-links{
    position:absolute;
    top: 76px; left:0; right:0;
    flex-direction:column;
    align-items:flex-start;
    background: #10161A;
    padding: 20px clamp(20px,5vw,48px) 28px;
    border-bottom: 1px solid var(--line-dark);
    max-height: 0;
    overflow:hidden;
    gap: 18px;
    transition: max-height .4s var(--ease), padding .4s var(--ease);
  }
  .nav-links.is-open{ max-height: 340px; padding-top: 22px; }
  .nav-links .btn{ margin-top: 6px; }
}

/* ---------------- Hero ---------------- */
.hero{
  position:relative;
  background: radial-gradient(ellipse 90% 70% at 30% 0%, #1a2329 0%, var(--bg-dark) 55%);
  color: var(--paper);
  overflow:hidden;
  padding: clamp(64px, 11vw, 128px) 0 clamp(60px, 8vw, 96px);
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.05fr 0.85fr;
  gap: clamp(30px, 6vw, 70px);
  align-items:center;
  position:relative;
  z-index:2;
}
.hero h1{
  font-size: clamp(2.6rem, 5.6vw, 4.4rem);
  margin-bottom: 0.32em;
}
.hero h1 em{
  font-style:normal;
  color: var(--ember);
  position:relative;
}
.hero__lede{
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: rgba(242,239,231,0.82);
  max-width: 46ch;
  margin-bottom: 2em;
}
.hero__ctas{ display:flex; flex-wrap:wrap; gap: 14px; margin-bottom: 2.6em; }

.hero__disciplines{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(242,239,231,0.55);
  display:flex;
  flex-wrap:wrap;
  gap: 10px 22px;
}
.hero__disciplines b{ color: var(--paper); font-weight: 500;}

.hero__art{
  position:relative;
  aspect-ratio: 1/1;
  max-width: 460px;
  justify-self:center;
}
.ambient-svg{ position:absolute; inset:0; width:100%; height:100%; }
.ambient-svg .trace{
  fill:none;
  stroke-width: 1.4;
  stroke-linecap: round;
  opacity: 0.55;
}
.ambient-svg .pulse{
  stroke-width: 3;
  stroke-linecap: round;
  fill:none;
  stroke-dasharray: 10 600;
  animation: travel 5.5s linear infinite;
}
.ambient-svg .node-dot{ opacity: 0.9; }
@keyframes travel{
  0%{ stroke-dashoffset: 0; }
  100%{ stroke-dashoffset: -610; }
}

@media (max-width: 900px){
  .hero__grid{ grid-template-columns: 1fr; }
  .hero__art{ max-width: 320px; margin-top: 12px; }
}

/* ---------------- Section rhythm ---------------- */
section{ padding: clamp(64px, 9vw, 108px) 0; }
.on-dark{ background: var(--bg-dark); color: var(--paper); }
.on-dark-2{ background: var(--bg-dark-2); color: var(--paper); }

.section-head{
  max-width: 720px;
  margin-bottom: clamp(34px, 5vw, 56px);
}
.section-head h2{ font-size: clamp(1.9rem, 3.6vw, 2.7rem); }
.section-head p{ color: var(--ink-soft); font-size: 1.05rem; max-width: 62ch; }
.on-dark .section-head p, .on-dark-2 .section-head p{ color: rgba(242,239,231,0.72); }

/* ---------------- Who we are / STEAM diagram ---------------- */
.who__grid{
  display:grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(30px, 6vw, 60px);
  align-items:center;
}
.who__text p{ margin: 0 0 1.1em; color: rgba(242,239,231,0.82); max-width: 56ch; }
.who__stats{
  display:flex;
  gap: clamp(20px, 4vw, 40px);
  margin-top: 2em;
  font-family: var(--font-mono);
}
.who__stats div strong{
  display:block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--ember-2);
}
.who__stats div span{ font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; opacity: 0.65; }

.diagram{
  position:relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1/1;
  margin: 0 auto;
}
.diagram svg{ position:absolute; inset:0; width:100%; height:100%; }
.diagram .edge{ stroke: var(--line-dark); stroke-width: 1.5; fill:none; }
.diagram .spoke{ stroke: var(--line-dark); stroke-width: 1.5; fill:none; }
.diagram .spoke.is-lit, .diagram .edge.is-lit{ stroke: var(--ember); transition: stroke .3s var(--ease); }

.hub{
  position:absolute;
  left:50%; top:50%;
  transform: translate(-50%,-50%);
  width: 26%; height: 26%;
  border-radius: 50%;
  background: var(--bg-dark-2);
  border: 1px solid var(--line-dark);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding: 8px;
}
.hub__letter{
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight:700;
  color: var(--ember-2);
  transition: color .3s var(--ease);
}
.hub__label{
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform:uppercase;
  opacity: 0.6;
  margin-top: 2px;
}

.node{
  position:absolute;
  width: 66px; height: 66px;
  margin-left: -33px; margin-top: -33px;
  border-radius: 50%;
  border: 1px solid var(--line-dark);
  background: var(--bg-dark);
  color: var(--paper);
  font-family: var(--font-display);
  font-weight:700;
  font-size: 1.15rem;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.node:hover, .node:focus-visible, .node.is-active{
  transform: scale(1.14);
  outline:none;
}
.node--s{ left: 50%; top: 10.4%; }
.node--t{ left: 87.6%; top: 37.8%; }
.node--e{ left: 73.3%; top: 82%; }
.node--a{ left: 26.7%; top: 82%; }
.node--m{ left: 12.4%; top: 37.8%; }

.node--s.is-active, .node--s:hover{ border-color: var(--science); color: var(--science); box-shadow: 0 0 0 6px rgba(62,166,255,0.12); background: rgba(62,166,255,0.08); }
.node--t.is-active, .node--t:hover{ border-color: var(--tech); color: var(--tech); box-shadow: 0 0 0 6px rgba(179,136,255,0.12); background: rgba(179,136,255,0.08); }
.node--e.is-active, .node--e:hover{ border-color: var(--engineering); color: var(--engineering); box-shadow: 0 0 0 6px rgba(255,159,64,0.12); background: rgba(255,159,64,0.08); }
.node--a.is-active, .node--a:hover{ border-color: var(--arts); color: var(--arts); box-shadow: 0 0 0 6px rgba(255,79,163,0.12); background: rgba(255,79,163,0.08); }
.node--m.is-active, .node--m:hover{ border-color: var(--math); color: var(--math); box-shadow: 0 0 0 6px rgba(56,209,169,0.12); background: rgba(56,209,169,0.08); }

@media (max-width: 720px){
  .who__grid{ grid-template-columns: 1fr; }
  .diagram{ display:none; }
}

.steam-list{
  list-style:none;
  margin: clamp(30px,5vw,46px) 0 0;
  padding: 0;
  display:grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  border-top: 1px solid var(--line-dark);
  padding-top: clamp(24px,4vw,34px);
}
.steam-list li{
  padding: 16px 14px 14px;
  border-radius: 12px;
  border: 1px solid var(--line-dark);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.steam-list li.is-active{ background: rgba(255,255,255,0.03); }
.steam-list .dot{
  width: 10px; height: 10px;
  border-radius: 50%;
  display:inline-block;
  margin-bottom: 10px;
}
.dot--s{ background: var(--science); } .steam-list li[data-key="s"].is-active{ border-color: var(--science); }
.dot--t{ background: var(--tech); } .steam-list li[data-key="t"].is-active{ border-color: var(--tech); }
.dot--e{ background: var(--engineering); } .steam-list li[data-key="e"].is-active{ border-color: var(--engineering); }
.dot--a{ background: var(--arts); } .steam-list li[data-key="a"].is-active{ border-color: var(--arts); }
.dot--m{ background: var(--math); } .steam-list li[data-key="m"].is-active{ border-color: var(--math); }
.steam-list strong{ display:block; font-family: var(--font-display); font-size: 1rem; margin-bottom: 4px; }
.steam-list span.def{ font-size: 0.86rem; color: rgba(242,239,231,0.68); line-height:1.45; display:block; }

@media (max-width: 900px){
  .steam-list{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px){
  .steam-list{ grid-template-columns: 1fr; }
}

/* ---------------- Programs ---------------- */
.programs-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.program-card{
  background: #fff;
  border: 1px solid var(--line-light);
  border-left: 4px solid var(--ink);
  border-radius: 14px;
  padding: 26px 24px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.program-card:hover{
  transform: translateY(-5px);
  box-shadow: 0 18px 34px -22px rgba(20,25,28,0.35);
}
.program-card .tag{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform:uppercase;
  color: var(--ink-soft);
  margin-bottom: 10px;
  display:inline-block;
}
.program-card h3{ font-size: 1.15rem; margin-bottom: 0.5em; }
.program-card p{ margin:0; color: var(--ink-soft); font-size: 0.94rem; }

.program-card--s{ border-left-color: var(--science); }
.program-card--t{ border-left-color: var(--tech); }
.program-card--e{ border-left-color: var(--engineering); }
.program-card--a{ border-left-color: var(--arts); }
.program-card--m{ border-left-color: var(--math); }

@media (max-width: 980px){ .programs-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px){ .programs-grid{ grid-template-columns: 1fr; } }

/* ---------------- Training / Educators ---------------- */
.training-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(30px, 6vw, 70px);
}
.training-grid h3{ font-size: 1.4rem; margin-bottom: 0.5em; }
.training-grid p{ color: var(--ink-soft); }
.training-col{ position:relative; padding-left: 26px; }
.training-col::before{
  content:"";
  position:absolute; left:0; top:6px; bottom:6px; width:2px;
  background: linear-gradient(var(--ember), var(--ember-2));
  border-radius: 2px;
}
@media (max-width: 760px){ .training-grid{ grid-template-columns: 1fr; } }

/* ---------------- CTA band ---------------- */
.cta-band{
  background: linear-gradient(120deg, #1a0f0a 0%, #2a140b 45%, #10161A 100%);
  color: var(--paper);
  text-align:center;
}
.cta-band h2{ font-size: clamp(1.9rem, 4vw, 2.6rem); margin-bottom: 0.4em; }
.cta-band p{ color: rgba(242,239,231,0.78); max-width: 52ch; margin: 0 auto 1.8em; }
.cta-band .btn{ margin: 0 6px; }

/* ---------------- Contact ---------------- */
.contact-card{
  background: #fff;
  border: 1px solid var(--line-light);
  border-radius: 20px;
  padding: clamp(30px, 5vw, 52px);
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(24px, 5vw, 48px);
  align-items:center;
}
.contact-card h2{ font-size: clamp(1.7rem, 3vw, 2.2rem); }
.contact-card p{ color: var(--ink-soft); max-width: 48ch; }
.contact-meta{
  font-family: var(--font-mono);
  font-size: 0.95rem;
  border-left: 2px solid var(--ember);
  padding-left: 20px;
}
.contact-meta a{ text-decoration:none; }
.contact-meta div{ margin-bottom: 14px; }
.contact-meta .label{ display:block; text-transform:uppercase; letter-spacing:0.08em; font-size:0.7rem; color: var(--ink-soft); margin-bottom: 4px; }
@media (max-width: 760px){ .contact-card{ grid-template-columns: 1fr; } .contact-meta{ border-left:none; border-top:2px solid var(--ember); padding-left:0; padding-top:20px; } }

/* ---------------- Footer ---------------- */
.site-footer{
  background: var(--bg-dark);
  color: rgba(242,239,231,0.6);
  padding: 34px 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  border-top: 1px solid var(--line-dark);
}
.site-footer .wrap{
  display:flex;
  justify-content: space-between;
  flex-wrap:wrap;
  gap: 10px;
}
.site-footer a{ text-decoration:none; color: rgba(242,239,231,0.6); }
.site-footer a:hover{ color: var(--ember-2); }

/* ---------------- Reveal on scroll ---------------- */
.reveal{ opacity:0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible{ opacity:1; transform: translateY(0); }