/* Interactive brain hero — light, clean, UU house style ("living research landscape").
   A rotating brain fires synaptic signals along rays to eleven theme nodes, each
   carrying its live project count. Geometry is computed in components/BrainHero.js. */
.brain-hero {
  position: relative;
  width: 100vw;
  margin: -32px calc(50% - 50vw) 32px;
  padding: clamp(40px, 5vw, 72px) clamp(18px, 4vw, 56px) 26px;
  overflow: hidden;
  color: #001240;
  background:
    radial-gradient(120% 80% at 50% 8%, rgba(255, 205, 0, 0.10), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #fffdf6 55%, #fff6df 100%);
  border: 0;
  box-shadow: none;
  isolation: isolate;
}
.brain-hero__copy {
  position: relative;
  z-index: 5;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.brain-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #7a6000;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.brain-hero__eyebrow > span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #ffcd00;
  box-shadow: 0 0 0 3px rgba(255, 205, 0, 0.22);
}
.brain-hero__copy h2 {
  max-width: 720px;
  margin: 14px auto 0;
  color: #001240;
  font-family: var(--font-head);
  font-size: 3.9rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0;
  text-wrap: balance;
}
.brain-hero__copy p {
  max-width: 620px;
  margin: 16px auto 0;
  color: #4a5468;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  text-wrap: balance;
}

.brain-hero__stage {
  position: relative;
  z-index: 1;
  width: 100%;
  /* Extra top room so the 12 o'clock node clears the intro copy. */
  margin: 48px auto 0;
  display: flex;
  justify-content: center;
}
.brain-hero__scene {
  position: relative;
  width: min(100%, 940px);
  aspect-ratio: 13 / 10;
}

/* Faint orbital ring the nodes are seated on. */
.brain-hero__orbit {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 66%;
  height: 85.8%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(0, 18, 64, 0.07);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  animation: brain-hero-orbit-in 700ms ease-out both;
}

/* Central disc holding the rotating brain. */
.brain-hero__disc {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 42%;
  height: 54.6%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  overflow: hidden;
  background: radial-gradient(circle at 50% 42%, #122145 0%, #060b1c 64%, #03060f 100%);
  box-shadow:
    0 0 0 7px #ffffff,
    0 0 0 8px rgba(0, 18, 64, 0.06),
    0 0 90px -8px rgba(255, 205, 0, 0.5),
    0 34px 70px -34px rgba(0, 18, 64, 0.55);
  z-index: 2;
  animation: brain-hero-disc-in 640ms cubic-bezier(.2,.7,.2,1) backwards;
}
.brain-hero__halo {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 62%, rgba(255, 205, 0, 0.16), transparent 58%);
  pointer-events: none;
  z-index: 0;
}
.brain-hero__video {
  position: relative;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  pointer-events: none;
  z-index: 1;
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 64%, transparent 92%);
  mask-image: radial-gradient(circle at 50% 50%, #000 64%, transparent 92%);
}
.brain-hero__disc-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
  box-shadow: inset 0 0 0 1px rgba(255, 205, 0, 0.28), inset 0 0 40px rgba(0, 0, 0, 0.55);
}

/* Rays from the disc edge to each node + the synaptic signal travelling along them. */
.brain-hero__rays {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}
.brain-hero__ray {
  stroke: rgba(0, 18, 64, 0.16);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  stroke-linecap: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
  transition: stroke 200ms ease, stroke-width 200ms ease;
  animation: brain-hero-ray-draw 520ms ease-out both;
  animation-delay: calc(160ms + var(--i) * 42ms);
}
.brain-hero__ray.is-active { stroke: #f5b400; stroke-width: 1.8; }
.brain-hero__spark {
  fill: #ffc500;
  opacity: 0.55;
  filter: drop-shadow(0 0 1.4px rgba(255, 197, 0, 0.9));
  transition: opacity 200ms ease;
}
.brain-hero__spark.is-active { fill: #ffcd00; opacity: 1; }

/* Nodes + labels. */
.brain-hero__hotspots { position: absolute; inset: 0; z-index: 3; }
.brain-hero__hotspot {
  position: absolute;
  left: var(--nx);
  top: var(--ny);
  display: flex;
  align-items: center;
  gap: 11px;
  max-width: 230px;
  transform: translate(-50%, -50%);
  color: #001240;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.22;
  text-decoration: none;
}
.brain-hero__hotspot.side-right  { flex-direction: row; }
.brain-hero__hotspot.side-left   { flex-direction: row-reverse; }
.brain-hero__hotspot.side-top    { flex-direction: column-reverse; }
.brain-hero__hotspot.side-bottom { flex-direction: column; }
/* Push the label outward so it sits clear of the node. */
.brain-hero__hotspot.side-right  { transform: translate(0, -50%); }
.brain-hero__hotspot.side-left   { transform: translate(-100%, -50%); }
.brain-hero__hotspot.side-top    { transform: translate(-50%, -100%); }
.brain-hero__hotspot.side-bottom { transform: translate(-50%, 0); }

.brain-hero__node {
  position: relative;
  width: 15px;
  height: 15px;
  flex: 0 0 15px;
  border-radius: 50%;
  background: #ffcd00;
  border: 2.5px solid #ffffff;
  box-shadow:
    0 0 0 4px rgba(255, 205, 0, calc(0.12 + 0.2 * var(--weight, 0))),
    0 0 calc(5px + 12px * var(--weight, 0)) rgba(255, 190, 0, calc(0.18 + 0.34 * var(--weight, 0))),
    0 2px 7px rgba(0, 18, 64, 0.2);
  transition: transform 180ms cubic-bezier(.2,.7,.2,1), box-shadow 180ms ease;
  animation: brain-hero-node-in 460ms cubic-bezier(.2,1.5,.4,1) backwards;
  animation-delay: calc(240ms + var(--i) * 46ms);
}
.brain-hero__label {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: 190px;
  padding: 8px 13px;
  background: #ffffff;
  border: 1px solid rgba(0, 18, 64, 0.07);
  border-radius: 11px;
  box-shadow: 0 10px 26px -14px rgba(0, 18, 64, 0.5), 0 1px 0 rgba(255, 255, 255, 0.9) inset;
  transition: border-color 160ms ease, box-shadow 160ms ease;
  animation: brain-hero-label-in 440ms ease-out backwards;
  animation-delay: calc(320ms + var(--i) * 46ms);
}
.brain-hero__name {
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
}
.brain-hero__count {
  display: inline-flex;
  align-items: baseline;
  gap: 1px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1;
  color: #a87600;
  transition: color 160ms ease;
}
.brain-hero__count-unit {
  font-size: 0.56rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: #8a93a4;
}
.brain-hero__hotspot.side-right  .brain-hero__label { align-items: flex-start; text-align: left; }
.brain-hero__hotspot.side-left   .brain-hero__label { align-items: flex-end;   text-align: right; }
.brain-hero__hotspot.side-top    .brain-hero__label,
.brain-hero__hotspot.side-bottom .brain-hero__label { align-items: center; text-align: center; }

.brain-hero__hotspot:hover,
.brain-hero__hotspot:focus-visible,
.brain-hero__hotspot.is-active { z-index: 6; outline: none; }
.brain-hero__hotspot:hover .brain-hero__node,
.brain-hero__hotspot:focus-visible .brain-hero__node,
.brain-hero__hotspot.is-active .brain-hero__node {
  transform: scale(1.25);
  box-shadow: 0 0 0 5px rgba(255, 205, 0, 0.32), 0 0 16px rgba(255, 190, 0, 0.5), 0 3px 10px rgba(0, 18, 64, 0.28);
}
.brain-hero__hotspot:hover .brain-hero__label,
.brain-hero__hotspot:focus-visible .brain-hero__label,
.brain-hero__hotspot.is-active .brain-hero__label {
  border-color: rgba(255, 205, 0, 0.85);
  box-shadow: 0 10px 24px -10px rgba(0, 18, 64, 0.45), 0 0 0 1px rgba(255, 205, 0, 0.5);
}
.brain-hero__hotspot:hover .brain-hero__count,
.brain-hero__hotspot:focus-visible .brain-hero__count,
.brain-hero__hotspot.is-active .brain-hero__count { color: #001240; }
.brain-hero__hotspot:focus-visible .brain-hero__label {
  outline: 2px solid #001240;
  outline-offset: 2px;
}
/* Fade the rest while one theme is active. */
.brain-hero[data-active-theme]:not([data-active-theme=""]) .brain-hero__hotspot:not(.is-active) { opacity: 0.45; }

.brain-hero__footer {
  position: relative;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  max-width: 940px;
  margin: 6px auto 0;
  padding-top: 16px;
  color: #54607a;
  border-top: 1px solid rgba(0, 18, 64, 0.1);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.brain-hero__footer span { display: flex; align-items: center; gap: 8px; }
.brain-hero__footer i { width: 6px; height: 6px; border-radius: 50%; background: #24a793; box-shadow: 0 0 0 3px rgba(36, 167, 147, 0.18); }

/* --- Entrance sequence ------------------------------------------------ */
@keyframes brain-hero-disc-in {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.86); }
  to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}
@keyframes brain-hero-orbit-in {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.9); }
  to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}
@keyframes brain-hero-ray-draw {
  from { stroke-dashoffset: 1; opacity: 0; }
  to   { stroke-dashoffset: 0; opacity: 1; }
}
@keyframes brain-hero-node-in {
  from { opacity: 0; transform: scale(0); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes brain-hero-label-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 980px) {
  .brain-hero__copy h2 { font-size: 3.1rem; }
  .brain-hero__hotspot { font-size: 0.74rem; max-width: 180px; }
  .brain-hero__label { max-width: 160px; }
}

@media (max-width: 720px) {
  .brain-hero {
    width: 100vw;
    margin: -24px calc(50% - 50vw) 28px;
    padding: 34px 16px 20px;
  }
  .brain-hero__copy { max-width: calc(100vw - 32px); }
  .brain-hero__copy h2 { max-width: 14ch; font-size: 2.3rem; }
  .brain-hero__copy p { max-width: 32ch; font-size: 0.86rem; }
  .brain-hero__stage { margin-top: 18px; }
  /* Brain in a centered circle on top, themes as a clean list below. */
  .brain-hero__scene { aspect-ratio: auto; display: flex; flex-direction: column; align-items: center; }
  .brain-hero__orbit { display: none; }
  .brain-hero__disc {
    position: relative;
    left: auto; top: auto;
    transform: none;
    width: min(72vw, 320px);
    height: min(72vw, 320px);
    animation: none;
  }
  .brain-hero__rays { display: none; }
  .brain-hero__hotspots {
    position: static;
    width: 100%;
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }
  .brain-hero__hotspot,
  .brain-hero__hotspot.side-left,
  .brain-hero__hotspot.side-right,
  .brain-hero__hotspot.side-top,
  .brain-hero__hotspot.side-bottom {
    position: static;
    max-width: none;
    min-height: 46px;
    flex-direction: row;
    text-align: left;
    transform: none;
    gap: 9px;
    padding: 8px 10px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 18, 64, 0.08);
    border-radius: 9px;
    animation: none;
  }
  .brain-hero__node { animation: none; }
  .brain-hero__label,
  .brain-hero__hotspot.side-left .brain-hero__label,
  .brain-hero__hotspot.side-right .brain-hero__label,
  .brain-hero__hotspot.side-top .brain-hero__label,
  .brain-hero__hotspot.side-bottom .brain-hero__label {
    flex-direction: row;
    align-items: baseline;
    gap: 6px;
    flex-wrap: wrap;
    max-width: none;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
    text-align: left;
    animation: none;
  }
  .brain-hero__hotspot:hover .brain-hero__label,
  .brain-hero__hotspot.is-active .brain-hero__label { background: transparent; border: 0; box-shadow: none; }
}

@media (max-width: 540px) {
  .brain-hero__copy h2 { font-size: 2.05rem; }
  .brain-hero__hotspots { grid-template-columns: 1fr; }
  .brain-hero__footer { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  .brain-hero *,
  .brain-hero *::before,
  .brain-hero *::after { animation: none !important; transition-duration: 0.01ms !important; }
  .brain-hero__spark { display: none; }
}