:root {
  --pi-ink: #0d1117;
  --pi-soft: #3b4b57;
  --pi-line: rgba(13, 17, 23, 0.10);
  --pi-glow: rgba(46, 196, 182, 0.30);
  --pi-blue: rgba(0, 123, 255, 0.92);
  --pi-green: rgba(46, 196, 182, 0.92);
  --pi-gold: rgba(255, 183, 3, 0.95);
}

.pi {
  margin-top: 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--pi-line);
  background: linear-gradient(180deg, #ffffff 0%, rgba(46, 196, 182, 0.04) 100%);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.10);
  overflow: hidden;
  position: relative;
}

.pi::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 420px at 78% -10%, rgba(46, 196, 182, 0.20), transparent 60%),
    radial-gradient(820px 420px at 10% 0%, rgba(0, 123, 255, 0.14), transparent 55%),
    linear-gradient(rgba(13, 17, 23, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 17, 23, 0.04) 1px, transparent 1px);
  background-size: auto, auto, 26px 26px, 26px 26px;
  pointer-events: none;
  opacity: 0.9;
}

.pi > * {
  position: relative;
  z-index: 1;
}

.pi-head {
  padding: 18px 18px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(120deg, rgba(11, 31, 36, 0.96), rgba(16, 42, 49, 0.92));
  color: #fff;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
}

.pi-head h3 {
  margin: 0 0 6px 0;
  font-family: "Changa", sans-serif;
  font-size: 1.35rem;

}

.pi-head p {
  margin: 0;
  opacity: 0.9;
  font-size: 0.98rem;
  line-height: 1.9;
}

.pi-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-start;
}

.pi-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.95);
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
}

.pi-badge i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--pi-green);
  box-shadow: 0 0 0 4px rgba(46, 196, 182, 0.20);
}

.pi-grid {
  padding: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.pi-bottom {
  padding: 0 18px 18px;
}

.pi-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(13, 17, 23, 0.10);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
  padding: 16px;
  overflow: hidden;
}

.pi-card h4 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.pi-hint {
  color: var(--pi-soft);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-top: 10px;
}

.pi-kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.82rem;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(13, 17, 23, 0.10);
  color: var(--pi-soft);
  background: rgba(255, 255, 255, 0.65);
  white-space: nowrap;
}

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

.pi-feature {
  appearance: none;
  border: 1px solid rgba(13, 17, 23, 0.10);
  background: rgba(255, 255, 255, 0.70);
  border-radius: 18px;
  padding: 12px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  text-align: start;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.pi-feature:hover {
  transform: translateY(-1px);
  border-color: rgba(46, 196, 182, 0.45);
}

.pi-feature:focus-visible {
  outline: 3px solid rgba(0, 123, 255, 0.35);
  outline-offset: 2px;
}

.pi-feature[aria-pressed="true"] {
  border-color: rgba(0, 123, 255, 0.55);
  background: rgba(0, 123, 255, 0.06);
  box-shadow: 0 12px 24px rgba(0, 123, 255, 0.08);
}

.pi-feature img {
  width: 44px;
  height: 44px;
}

.pi-feature strong {
  display: block;
  font-weight: 900;
  font-size: 0.98rem;
  line-height: 1.4;
  color: var(--pi-ink);
}

.pi-feature span {
  display: block;
  margin-top: 2px;
  color: var(--pi-soft);
  font-size: 0.88rem;
  line-height: 1.6;
}

.pi-benefits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.pi-benefit {
  border-radius: 18px;
  border: 1px dashed rgba(13, 17, 23, 0.14);
  background: rgba(46, 196, 182, 0.06);
  padding: 12px;
}

.pi-benefit strong {
  display: block;
  font-weight: 900;
  margin-bottom: 6px;
  color: var(--pi-ink);
}

.pi-benefit p {
  margin: 0;
  color: var(--pi-soft);
  font-size: 0.92rem;
  line-height: 1.8;
}

.pi-usecases {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.pi-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(13, 17, 23, 0.10);
  background: rgba(255, 255, 255, 0.75);
  font-weight: 700;
  font-size: 0.9rem;
}

.pi-chip::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--pi-blue);
  box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.10);
}

.pi-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.pi-diagram {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(13, 17, 23, 0.12);
  background: linear-gradient(180deg, rgba(11, 31, 36, 0.96), rgba(16, 42, 49, 0.92));
  box-shadow: 0 16px 28px rgba(15, 23, 42, 0.10);
  padding: 16px;
  color: #fff;
  overflow: hidden;
}

.pi-diagram h4 {
  margin: 0 0 8px 0;
  font-size: 1.05rem;
}

.pi-diagram p {
  margin: 0 0 10px 0;
  opacity: 0.9;
  font-size: 0.92rem;
  line-height: 1.8;
}

.pi-diagram-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  gap: 14px;
  align-items: start;
}

.pi-diagram-visual {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(255, 255, 255, 0.04);
  padding: 10px;
}

.pi-detail-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 16px 28px rgba(15, 23, 42, 0.12);
  padding: 16px;
}

.pi-detail-card h4 {
  margin: 0;
  color: #fff;
  font-size: 1.05rem;
}

.pi-svg {
  width: 100%;
  height: auto;
  display: block;
}

.pi-svg [data-node] {
  cursor: pointer;
}

.pi-node {
  fill: rgba(255, 255, 255, 0.08);
  stroke: rgba(255, 255, 255, 0.18);
  stroke-width: 1.4;
}

.pi-title {
  fill: #ffffff;
  font-weight: 800;
  font-size: 18px;
}

.pi-sub {
  fill: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.pi-edge {
  stroke: rgba(46, 196, 182, 0.70);
  stroke-width: 3.2;
  fill: none;
  opacity: 0.35;
  stroke-linecap: round;
}

.pi-dashed {
  stroke-dasharray: 10 12;
}

.pi-detail {
  display: grid;
  gap: 10px;
}

.pi-detail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.pi-detail p {
  color: rgba(255, 255, 255, 0.90);
  font-size: 0.95rem;
  line-height: 1.9;
  margin: 0;
}

.pi-detail ul {
  margin: 0;
  padding-inline-start: 18px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.93rem;
  line-height: 1.9;
}

.pi-detail figure {
  margin: 6px 0 0;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
}

.pi-detail figure img {
  display: block;
  width: 100%;
  height: auto;
}

.pi[data-focus] .pi-node {
  transition: stroke 0.15s ease, fill 0.15s ease, filter 0.15s ease;
}

.pi[data-focus="realtime"] .pi-svg [data-node="realtime"] .pi-node,
.pi[data-focus="recordings"] .pi-svg [data-node="recordings"] .pi-node,
.pi[data-focus="reports"] .pi-svg [data-node="reports"] .pi-node,
.pi[data-focus="calls"] .pi-svg [data-node="calls"] .pi-node {
  fill: rgba(255, 255, 255, 0.16);
  stroke: var(--pi-gold);
  filter: drop-shadow(0 10px 24px rgba(255, 183, 3, 0.24));
}

.pi[data-focus="realtime"] .pi-svg .pi-edge[data-edge="to-realtime"],
.pi[data-focus="recordings"] .pi-svg .pi-edge[data-edge="to-recordings"],
.pi[data-focus="reports"] .pi-svg .pi-edge[data-edge="to-reports"],
.pi[data-focus="calls"] .pi-svg .pi-edge[data-edge="to-calls"] {
  opacity: 1;
  stroke: var(--pi-gold);
}

@media (prefers-reduced-motion: no-preference) {
  .pi-dashed {
    animation: piDash 14s linear infinite;
  }
}

@keyframes piDash {
  to {
    stroke-dashoffset: -320;
  }
}

@media (max-width: 980px) {
  .pi-head {
    grid-template-columns: 1fr;
    padding: 16px 16px 14px;
    gap: 12px;
  }

  .pi-diagram-grid {
    grid-template-columns: 1fr;
  }

  .pi-grid {
    padding: 16px;
    gap: 14px;
  }

  .pi-bottom {
    padding: 0 16px 16px;
  }

  .pi-card,
  .pi-diagram,
  .pi-detail-card {
    padding: 14px;
  }

  .pi-detail figure img {
    max-height: 240px;
    object-fit: cover;
  }

  .pi-features {
    grid-template-columns: 1fr;
  }

  .pi-benefits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .pi {
    margin-top: 18px;
  }

  .pi::before {
    opacity: 0.5;
    background-size: auto, auto, 18px 18px, 18px 18px;
  }

  .pi-head h3 {
    font-size: 1.1rem;
    line-height: 1.45;
    margin-bottom: 4px;
  }

  .pi-head p,
  .pi-diagram p,
  .pi-detail p,
  .pi-detail ul,
  .pi-benefit p {
    font-size: 0.9rem;
    line-height: 1.75;
  }

  .pi-badges,
  .pi-usecases,
  .pi-cta {
    gap: 8px;
  }

  .pi-badge,
  .pi-chip {
    font-size: 0.82rem;
    padding: 7px 10px;
  }

  .pi-feature {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 8px;
    padding: 10px;
    border-radius: 14px;
  }

  .pi-feature img {
    width: 40px;
    height: 40px;
  }

  .pi-feature strong {
    font-size: 0.92rem;
  }

  .pi-feature span {
    font-size: 0.82rem;
    line-height: 1.55;
  }

  .pi-diagram-visual {
    display: none;
  }

  .pi-detail-head h4,
  .pi-card h4,
  .pi-diagram h4 {
    font-size: 0.98rem;
    line-height: 1.4;
  }
}

@media (max-width: 420px) {
  .pi-head,
  .pi-grid,
  .pi-bottom {
    padding-inline: 12px;
  }

  .pi-card,
  .pi-diagram,
  .pi-detail-card {
    padding: 12px;
    border-radius: 16px;
  }

  .pi-benefits {
    grid-template-columns: 1fr;
  }
}