/* on-device.ai OEM page visuals. Strokes follow the theme; accent stays blue. */

.oem-stage {
  padding: var(--space-2xl) 0 var(--space-3xl);
  background:
    radial-gradient(ellipse at 15% 0%, rgba(59, 130, 246, 0.18), transparent 46%),
    radial-gradient(ellipse at 90% 100%, rgba(59, 130, 246, 0.08), transparent 42%),
    var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.oem-kicker {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.oem-stage-title {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 400;
  max-width: 18ch;
  margin-bottom: var(--space-xl);
}

.oem-proto-grid,
.oem-instrument-grid {
  display: grid;
  gap: var(--space-md);
}

.oem-proto-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.oem-instrument-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.oem-tile,
.oem-instrument {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-elevated);
  padding: var(--space-md) var(--space-sm) var(--space-md);
  min-width: 0;
}

.oem-tile {
  text-align: center;
}

.oem-icon {
  display: block;
  width: 100%;
  height: 72px;
  color: var(--color-text);
}

.oem-icon path,
.oem-icon rect,
.oem-icon circle,
.oem-icon polyline,
.oem-icon line,
.oem-icon polygon {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.oem-icon .accent { stroke: var(--color-accent); }
.oem-icon .dim { stroke: var(--color-text-muted); }
.oem-icon .glow { fill: var(--color-accent); stroke: none; }
.oem-icon .panel { fill: rgba(59, 130, 246, 0.08); }

.oem-tile strong,
.oem-instrument strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: var(--space-xs);
}

.oem-tile span,
.oem-instrument p {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.4;
  margin-top: 0.2rem;
}

.oem-instrument .oem-icon { height: 108px; }

.oem-live {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-accent);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.oem-live i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  display: block;
}

.oem-diagrams {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.oem-diagram {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  padding: var(--space-lg);
  min-width: 0;
}

.oem-diagram h4 {
  margin-bottom: var(--space-md);
}

.oem-eval {
  position: relative;
  width: min(100%, 320px);
  margin: 0 auto;
  aspect-ratio: 1;
  padding: 1.35rem 4.6rem;
}

.oem-eval svg {
  width: 100%;
  height: 100%;
  display: block;
}

.oem-ring {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1.5;
  stroke-dasharray: 8 10;
}

.oem-eval-label {
  position: absolute;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.oem-eval-label.n { top: 0; left: 50%; transform: translateX(-50%); }
.oem-eval-label.e { right: 0; top: 50%; width: 4.2rem; text-align: right; transform: translateY(-50%); }
.oem-eval-label.s { bottom: 0; left: 50%; transform: translateX(-50%); }
.oem-eval-label.w { left: 0; top: 50%; width: 4.2rem; transform: translateY(-50%); }

.oem-horizon {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
  position: relative;
  margin: 0;
  padding: 1.25rem 0 0;
}

.oem-horizon::before {
  content: "";
  position: absolute;
  top: 1.45rem;
  left: 4%;
  right: 4%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.oem-horizon li {
  position: relative;
  min-width: 0;
  padding-top: 1.1rem;
}

.oem-horizon li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
}

.oem-horizon time {
  display: block;
  color: var(--color-accent);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.oem-horizon strong {
  display: block;
  margin: 0.15rem 0;
}

.oem-horizon span {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

@media (prefers-reduced-motion: no-preference) {
  .oem-ring {
    animation: oem-flow 14s linear infinite;
  }
  .oem-live i {
    animation: oem-pulse 2.2s ease-out infinite;
  }
  .oem-horizon::before {
    background-size: 200% 100%;
    background-image: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    animation: oem-scan 3.6s linear infinite;
  }
}

@keyframes oem-flow {
  to { stroke-dashoffset: -180; }
}

@keyframes oem-pulse {
  0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.55); }
  100% { box-shadow: 0 0 0 8px rgba(59, 130, 246, 0); }
}

@keyframes oem-scan {
  to { background-position: 200% 0; }
}

@media (max-width: 900px) {
  .oem-proto-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .oem-instrument-grid,
  .oem-diagrams { grid-template-columns: 1fr 1fr; }
  .oem-horizon { grid-template-columns: 1fr; padding: 0 0 0 0.2rem; }
  .oem-horizon::before {
    top: 0;
    bottom: 0;
    left: 4px;
    right: auto;
    width: 1px;
    height: auto;
    background: var(--color-accent);
    animation: none;
  }
  .oem-horizon li { padding: 0 0 var(--space-md) 1.25rem; }
  .oem-horizon li::before { top: 0.2rem; }
}

@media (max-width: 560px) {
  .oem-proto-grid { grid-template-columns: 1fr 1fr; }
  .oem-instrument-grid,
  .oem-diagrams { grid-template-columns: 1fr; }
  .oem-eval { padding-left: 4.2rem; padding-right: 4.2rem; }
  .oem-eval-label { font-size: 0.68rem; }
}