/* Reusable product-UI components: device frames, telemetry, panels, chips, FAQ. */

/* ---------- Device frame ---------- */

.phone-frame {
  position: relative;
  width: min(100%, 320px);
  aspect-ratio: 9 / 19.5;
  padding: 10px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-phone);
  background: var(--color-surface);
}

.phone-frame::before {
  /* Dynamic Island */
  content: "";
  position: absolute;
  top: 22px;
  left: 50%;
  z-index: 2;
  width: 28%;
  height: 22px;
  border-radius: var(--radius-pill);
  background: var(--color-background);
  transform: translateX(-50%);
}

.phone-frame__screen {
  position: relative;
  height: 100%;
  overflow: hidden;
  border-radius: calc(var(--radius-phone) - 10px);
  background: var(--color-background);
}

.app-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Placeholder shown until real App Store screenshots are supplied. */
.app-screenshot--placeholder {
  display: grid;
  place-content: center;
  justify-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  text-align: center;
  background:
    linear-gradient(var(--color-border) 1px, transparent 1px) 0 0 / 100% 32px,
    var(--color-background);
  color: var(--color-muted);
}

.app-screenshot--placeholder img {
  width: 72px;
  opacity: 0.8;
}

.app-screenshot--placeholder strong {
  display: block;
  color: var(--color-text);
  font-size: var(--text-md);
  font-stretch: var(--stretch-display);
}

.app-screenshot--placeholder span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- Technical panel ---------- */

.panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.panel__body {
  padding: var(--space-md);
}

/* ---------- Dashboard preview (simulated telemetry) ---------- */

.dashboard-preview {
  --rpm-ratio: 0.86;

  display: flex;
  flex-direction: column;
  gap: clamp(0.6rem, 2.4vw, 0.9rem);
  padding: 58px 18px 18px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.dash__status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.dash__status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--color-warning);
  vertical-align: middle;
}

.dash__shift {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 4px;
}

.dash__shift span {
  height: 6px;
  border-radius: 2px;
  background: var(--color-surface-3);
  transition: background-color 90ms linear;
}

.dash__shift span.is-lit {
  background: var(--color-success);
}

.dash__shift span.is-lit:nth-child(n + 5) {
  background: var(--color-warning);
}

.dash__shift span.is-lit:nth-child(n + 8) {
  background: var(--color-danger);
}

.dash__shift.is-flash span {
  background: var(--color-primary);
}

.dash__main {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--space-sm);
}

.dash__rpm-value {
  display: block;
  font-size: clamp(2.6rem, 11vw, 3.4rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--color-text);
}

.dash__unit {
  display: block;
  margin-top: 6px;
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  color: var(--color-muted);
}

.dash__gear {
  display: grid;
  place-items: center;
  width: 64px;
  height: 72px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  text-align: center;
}

.dash__gear-value {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1;
}

.dash__bar {
  position: relative;
  height: 10px;
  overflow: hidden;
  border-radius: 2px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-surface-3) 0 calc(5% - 2px),
    transparent calc(5% - 2px) 5%
  );
}

.dash__bar-fill {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    90deg,
    var(--color-primary) 0 calc(5% - 2px),
    transparent calc(5% - 2px) 5%
  );
  clip-path: inset(0 calc((1 - var(--rpm-ratio)) * 100%) 0 0);
}

.dash__bar-redline {
  position: absolute;
  inset: 0 0 0 85%;
  background: repeating-linear-gradient(
    90deg,
    var(--color-danger) 0 calc(33.3% - 2px),
    transparent calc(33.3% - 2px) 33.3%
  );
  opacity: 0.35;
}

.dash__readouts {
  display: grid;
  border-top: 1px solid var(--color-border);
}

.dash__readout {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-block: 9px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.6875rem;
}

.dash__readout dt {
  letter-spacing: 0.14em;
  color: var(--color-muted);
}

.dash__readout dd {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.dash__readout dd small {
  margin-left: 4px;
  font-size: 0.625rem;
  font-weight: 400;
  color: var(--color-muted);
}

.dash__trace {
  flex: 1;
  min-height: 48px;
}

.dash__trace svg {
  width: 100%;
  height: 100%;
}

.dash__trace polyline {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.dash__trace line {
  stroke: var(--color-border);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

/* ---------- Telemetry tile ---------- */

.telemetry-tile {
  display: grid;
  gap: var(--space-2xs);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-family: var(--font-mono);
}

.telemetry-tile__label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.telemetry-tile__value {
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.5rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.telemetry-tile__value small {
  margin-left: 4px;
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-muted);
}

.telemetry-tile__meter {
  height: 3px;
  margin-top: var(--space-xs);
  border-radius: 2px;
  background: var(--color-surface-3);
  overflow: hidden;
}

.telemetry-tile__meter span {
  display: block;
  height: 100%;
  width: calc(var(--meter, 0.5) * 100%);
  background: var(--color-primary);
  transition: width var(--duration-base) var(--ease-out);
}

/* ---------- Chips ---------- */

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 34px;
  padding: 0 var(--space-sm);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xs);
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-text-soft);
}

.chip__swatch {
  width: 10px;
  height: 3px;
  border-radius: 1px;
  background: var(--swatch, var(--color-primary));
}

button.chip {
  cursor: pointer;
  transition: border-color var(--duration-fast) ease, color var(--duration-fast) ease, opacity var(--duration-fast) ease;
}

button.chip[aria-pressed="false"] {
  opacity: 0.45;
}

button.chip:hover {
  border-color: var(--color-muted);
}

/* ---------- Feature list ---------- */

.feature-list {
  display: grid;
  gap: var(--space-md);
}

.feature-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-sm);
  align-items: start;
  color: var(--color-text-soft);
}

.feature-list .icon {
  margin-top: 0.15em;
  color: var(--color-primary);
}

.feature-list strong {
  display: block;
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- Diagnostics preview ---------- */

.diagnostics-preview {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.diag-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.8rem var(--space-md);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.diag-row__status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
}

.diag-row--fault .diag-row__status {
  background: var(--color-warning);
}

.diag-row__count {
  min-width: 2.25rem;
  padding: 2px var(--space-xs);
  border-radius: var(--radius-xs);
  background: var(--color-success-soft);
  color: var(--color-success);
  font-weight: 600;
  text-align: center;
}

.diag-row--fault .diag-row__count {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.diag-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--color-border);
}

.diag-summary div {
  padding: var(--space-md);
  background: var(--color-surface);
}

.diag-summary strong {
  display: block;
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.1;
}

.diag-summary span {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.diag-progress {
  height: 2px;
  background: var(--color-surface-3);
}

.diag-progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--color-primary);
  transform-origin: left;
}

.is-visible .diag-progress span {
  animation: scan-progress 1.6s var(--ease-out) both;
}

@keyframes scan-progress {
  from {
    transform: scaleX(0);
  }
}

/* ---------- Fault card ---------- */

.fault-card {
  font-family: var(--font-mono);
}

.fault-card__module {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.fault-card__code {
  margin-block: var(--space-sm) var(--space-xs);
  font-size: var(--text-telemetry);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
}

.fault-card__desc {
  font-family: var(--font-sans);
  font-size: var(--text-md);
  color: var(--color-text-soft);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px var(--space-xs);
  border-radius: var(--radius-xs);
  background: var(--color-warning-soft);
  color: var(--color-warning);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ---------- Log preview (CSV) ---------- */

.log-preview {
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}

.log-preview table {
  width: 100%;
  min-width: 520px;
}

.log-preview th,
.log-preview td {
  padding: 0.55rem var(--space-md);
  border-bottom: 1px solid var(--color-border);
  text-align: right;
  white-space: nowrap;
}

.log-preview th:first-child,
.log-preview td:first-child {
  text-align: left;
  color: var(--color-muted);
}

.log-preview th {
  font-weight: 500;
  color: var(--color-primary);
}

.log-preview tr:last-child td {
  border-bottom: 0;
}

/* ---------- FAQ ---------- */

.faq {
  border-top: 1px solid var(--color-border);
}

.faq details {
  border-bottom: 1px solid var(--color-border);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-lg);
  font-size: var(--text-md);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary .icon {
  color: var(--color-muted);
  transition: transform var(--duration-base) var(--ease-out);
}

.faq details[open] summary .icon {
  transform: rotate(180deg);
}

.faq__answer {
  max-width: 46rem;
  padding-bottom: var(--space-lg);
  color: var(--color-muted);
}

/* ---------- Notice ---------- */

.notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-border);
  border-left: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-soft);
}

.notice .icon {
  margin-top: 0.2em;
  color: var(--color-primary);
}

.notice--warning {
  border-left-color: var(--color-warning);
}

.notice--warning .icon {
  color: var(--color-warning);
}

/* ---------- Scroll reveal (enabled by animations.js only) ---------- */

.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
  transition-delay: calc(var(--reveal-index, 0) * 80ms);
}

.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }
}