@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600&family=Spectral:ital,wght@0,400;0,600;1,400&display=swap");

:root {
  color-scheme: light;
  --ink: #0f1218;
  --muted: #57606a;
  --accent: #f05d5e;
  --accent-2: #2274a5;
  --glass: rgba(255, 255, 255, 0.75);
  --shadow: rgba(15, 18, 24, 0.18);
  --panel: rgba(255, 255, 255, 0.9);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", "Avenir", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top left, #f7f2e8, transparent 55%),
    radial-gradient(circle at 20% 70%, #f3dad7, transparent 60%),
    linear-gradient(135deg, #f6f7ff, #f4efe9 60%, #f9f1e8);
  display: flex;
  align-items: center;
  justify-content: center;
}

body::before {
  content: "";
  position: fixed;
  inset: -10vmax;
  background: conic-gradient(from 30deg, rgba(240, 93, 94, 0.15), transparent 40%, rgba(34, 116, 165, 0.2), transparent 70%);
  filter: blur(10px);
  z-index: -1;
}

#app {
  width: min(960px, 92vw);
  margin: 48px 0;
}

.shell {
  display: grid;
  gap: 24px;
  padding: 32px;
  border-radius: 28px;
  background: var(--glass);
  box-shadow: 0 30px 80px var(--shadow);
  backdrop-filter: blur(18px);
  animation: float-in 0.8s ease;
}

.hero h1 {
  font-family: "Spectral", serif;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  margin: 12px 0 8px;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(34, 116, 165, 0.1);
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.panel {
  padding: 24px;
  border-radius: 20px;
  background: var(--panel);
  box-shadow: inset 0 0 0 1px rgba(15, 18, 24, 0.05);
}

.panel-top {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
}

.status .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(240, 93, 94, 0.6);
  animation: pulse 1.6s infinite;
}

.readout {
  font-size: 1rem;
  color: var(--muted);
}

.bars {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  align-items: end;
  gap: 6px;
  min-height: 80px;
  padding: 16px;
  border-radius: 16px;
  background: linear-gradient(120deg, rgba(34, 116, 165, 0.08), rgba(240, 93, 94, 0.08));
}

.bar {
  border-radius: 10px 10px 4px 4px;
  transition: height 0.2s ease;
}

.bar.pos {
  background: linear-gradient(180deg, rgba(34, 116, 165, 0.9), rgba(34, 116, 165, 0.4));
}

.bar.neg {
  background: linear-gradient(180deg, rgba(240, 93, 94, 0.9), rgba(240, 93, 94, 0.4));
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.control {
  padding: 18px 20px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 20px rgba(15, 18, 24, 0.08);
}

.control label {
  display: block;
  font-weight: 600;
  margin-bottom: 12px;
}

.control input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.control .value {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 0.85rem;
  justify-content: center;
}

.outline {
  padding: 22px 24px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: inset 0 0 0 1px rgba(15, 18, 24, 0.05);
}

.outline-header h2 {
  margin: 0 0 6px;
  font-size: 1.4rem;
  font-family: "Spectral", serif;
}

.outline-header p {
  margin: 0 0 16px;
  color: var(--muted);
}

.outline-tree {
  display: grid;
  gap: 6px;
}

.outline-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.outline-row:hover {
  background: rgba(34, 116, 165, 0.08);
  transform: translateX(2px);
}

.outline-row .caret {
  width: 18px;
  color: var(--accent-2);
  font-size: 0.9rem;
}

.outline-row .label {
  font-weight: 500;
}

.divider {
  opacity: 0.5;
}

@keyframes float-in {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes pulse {
  0% {
    transform: scale(0.9);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.1);
    opacity: 1;
  }
  100% {
    transform: scale(0.9);
    opacity: 0.6;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 22px;
  }

  .panel {
    padding: 18px;
  }
}