.hw-shell {
  height: calc(100vh - 88px);
  min-height: 0;
}

.hw-main {
  min-height: 0;
  overflow-y: auto;
}

.hw-sidebar {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.88) 0%, rgba(8, 15, 28, 0.92) 100%);
}

.hw-nav-btn,
.hw-tab,
.hw-lat,
.hw-chip,
.hw-dop {
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease, transform 180ms ease;
}

.hw-nav-btn.is-on {
  background: linear-gradient(90deg, rgba(2, 132, 199, 0.28), rgba(16, 185, 129, 0.12));
  border-color: rgba(56, 189, 248, 0.55);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.15), 0 10px 28px rgba(2, 132, 199, 0.18);
}

.hw-nav-btn:disabled,
.hw-nav-btn.is-soon {
  opacity: 0.55;
}

.hw-tab.is-on {
  background: rgba(16, 185, 129, 0.16);
  border-color: rgba(52, 211, 153, 0.45);
  color: #d1fae5;
}

.hw-lat.is-on {
  background: rgba(2, 132, 199, 0.28);
  border-color: rgba(56, 189, 248, 0.55);
  color: #e0f2fe;
}

.hw-chip:hover,
.hw-lat:hover,
.hw-tab:hover,
.hw-dop:hover {
  border-color: rgba(125, 211, 252, 0.45);
  background: rgba(2, 132, 199, 0.12);
}

.hw-viewport {
  position: relative;
  min-height: 420px;
  height: min(62vh, 640px);
  border-radius: 1rem;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 50% at 20% 10%, rgba(2, 132, 199, 0.14), transparent 55%),
    radial-gradient(ellipse 50% 40% at 90% 90%, rgba(153, 27, 27, 0.12), transparent 50%),
    #0b1220;
}

.hw-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.hw-tip {
  position: absolute;
  z-index: 5;
  max-width: 240px;
  padding: 0.55rem 0.7rem;
  border-radius: 0.7rem;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(125, 211, 252, 0.28);
  color: #e2e8f0;
  font-size: 0.72rem;
  line-height: 1.45;
  pointer-events: none;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.hw-main .glass-card:hover {
  transform: none;
}

.hw-formula {
  min-height: 3.4rem;
  overflow-x: auto;
}

.hw-formula .katex-display {
  margin: 0.35rem 0;
}

.is-warn {
  color: #fde68a;
}

.hw-plot {
  width: 100%;
  min-height: 360px;
}

.hw-dop.is-on {
  background: rgba(2, 132, 199, 0.32);
  border-color: rgba(56, 189, 248, 0.5);
  color: #e0f2fe;
}

.hw-dop.is-on[data-dop='n'] {
  background: rgba(16, 185, 129, 0.22);
  border-color: rgba(52, 211, 153, 0.5);
}

.hw-dop.is-on[data-dop='p'] {
  background: rgba(153, 27, 27, 0.38);
  border-color: rgba(248, 113, 113, 0.5);
  color: #fecaca;
}

.band-stack {
  position: relative;
  height: 420px;
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: #0b1220;
}

.band-cb {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 28%;
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.28), rgba(2, 132, 199, 0.08));
}

.band-gap {
  position: absolute;
  top: 28%;
  left: 0;
  right: 0;
  height: 44%;
  background: repeating-linear-gradient(
    -45deg,
    rgba(15, 23, 42, 0.2),
    rgba(15, 23, 42, 0.2) 6px,
    rgba(30, 41, 59, 0.35) 6px,
    rgba(30, 41, 59, 0.35) 12px
  );
}

.band-vb {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 28%;
  background: linear-gradient(0deg, rgba(248, 113, 113, 0.3), rgba(153, 27, 27, 0.08));
}

.band-cloud-n,
.band-cloud-p {
  position: absolute;
  left: 12%;
  right: 12%;
  border-radius: 999px;
  pointer-events: none;
  transition: opacity 240ms ease;
}

.band-cloud-n {
  top: 8%;
  height: 16%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.85), transparent 70%);
  filter: blur(6px);
}

.band-cloud-p {
  bottom: 8%;
  height: 16%;
  background: radial-gradient(circle, rgba(251, 146, 60, 0.8), transparent 70%);
  filter: blur(6px);
}

.band-ef {
  position: absolute;
  left: 0;
  right: 0;
  height: 0;
  border-top: 2px dashed #fbbf24;
  box-shadow: 0 0 16px rgba(251, 191, 36, 0.55);
  transform: translateY(-1px);
  transition: top 280ms ease;
}

.band-ef::after {
  content: 'EF';
  position: absolute;
  right: 8px;
  top: -1.15rem;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: #fde68a;
}

.js-num {
  width: 4.2rem;
}

@media (max-width: 1023px) {
  .hw-viewport {
    height: 380px;
    min-height: 320px;
  }
}