:root {
  --bg: #090a0f;
  --bg-accent: #1d2233;
  --panel: rgba(17, 20, 31, 0.88);
  --ink: #eef0f7;
  --muted: #9ea4bf;
  --line: rgba(179, 191, 255, 0.12);
  --primary: #56679f;
  --primary-dark: #aebeff;
  --gold: #f3e8d2;
  --sky: #11151f;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Courier New", monospace;
  color: var(--ink);
  background:
    radial-gradient(circle at top, rgba(86, 103, 159, 0.18), transparent 32%),
    linear-gradient(rgba(9, 10, 15, 0.88), rgba(9, 10, 15, 0.94)),
    linear-gradient(180deg, #0a0c13 0%, #121624 100%);
}

.app-shell {
  width: min(1240px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero {
  margin-bottom: 24px;
}

.hero-story {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.82rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 0.96;
  max-width: 11ch;
}

.lede {
  max-width: 60ch;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.6;
}

.hero-message {
  width: min(320px, 36vw);
  margin-top: 10px;
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  image-rendering: pixelated;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  gap: 20px;
  align-items: start;
}

.stage-stack {
  display: grid;
  gap: 18px;
}

.stage-card,
.panel,
.network-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.stage-card {
  padding: 14px;
}

.network-card {
  padding: 18px;
}

.network-card-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.network-card-header h2 {
  margin: 0;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.network-card-header .hint {
  margin: 0;
  max-width: 34ch;
  text-align: right;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  background: var(--sky);
  image-rendering: pixelated;
}

.network-canvas {
  border-radius: 18px;
  background:
    radial-gradient(circle at top, rgba(173, 191, 255, 0.12), transparent 46%),
    linear-gradient(180deg, rgba(10, 12, 20, 0.96), rgba(22, 18, 28, 0.98));
  border: 1px solid rgba(255, 247, 235, 0.1);
  min-height: 220px;
}

.panel {
  padding: 20px;
}

.panel-group + .panel-group {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.panel-group h2 {
  margin: 0 0 14px;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stats {
  margin: 0;
  display: grid;
  gap: 10px;
}

.stats div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.98rem;
}

.stats dt {
  color: var(--muted);
}

.stats dd {
  margin: 0;
  font-weight: 700;
}

.compact-stats div {
  font-size: 0.92rem;
}

.controls {
  display: grid;
  gap: 10px;
}

.history-card {
  padding: 12px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(101, 119, 176, 0.16), rgba(217, 84, 123, 0.04)),
    rgba(22, 26, 40, 0.72);
  border: 1px solid var(--line);
}

.history-chart {
  display: block;
  width: 100%;
  height: 140px;
}

#historyArea {
  fill: rgba(198, 84, 47, 0.18);
}

#historyLine {
  fill: none;
  stroke: var(--primary);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.history-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.88rem;
}

button,
input[type="range"] {
  width: 100%;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 16px;
  background: linear-gradient(180deg, #6d79aa 0%, #45527c 100%);
  color: #f4f5fb;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, filter 140ms ease;
  box-shadow: 0 12px 28px rgba(53, 63, 105, 0.34);
}

button:hover {
  transform: translateY(-1px);
  filter: saturate(1.04);
}

button:active {
  transform: translateY(1px);
}

.slider-label,
.hint {
  color: var(--muted);
  line-height: 1.5;
}

.hint {
  margin: 8px 0 0;
  font-size: 0.94rem;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(5, 6, 10, 0.72);
  backdrop-filter: blur(8px);
  z-index: 20;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-card {
  width: min(560px, calc(100vw - 32px));
  padding: 28px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at top, rgba(214, 84, 123, 0.12), transparent 40%),
    rgba(18, 21, 33, 0.96);
  box-shadow: var(--shadow);
}

.modal-eyebrow {
  margin: 0 0 8px;
  color: var(--primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.82rem;
}

.modal-card h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.modal-copy {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.modal-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0 22px;
}

.modal-stats div {
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.modal-stats span {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
  margin-bottom: 6px;
}

.modal-stats strong {
  font-size: 1.5rem;
}

.modal-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.modal-actions.single-action {
  grid-template-columns: minmax(0, 1fr);
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: none;
  }

  .hero-story {
    flex-direction: column;
  }

  .hero-message {
    width: min(100%, 420px);
  }

  .network-card-header {
    align-items: start;
    flex-direction: column;
  }

  .network-card-header .hint {
    text-align: left;
  }
}