.ringlab {
  --ring-bg: #f6f3ed;
  --ring-panel: #fffdf8;
  --ring-card: #ebe5da;
  --ring-ink: #171818;
  --ring-muted: #5e6460;
  --ring-line: #d7cec0;
  --ring-accent: #126a73;
  --ring-accent-ink: #f8ffff;
  --ring-caution: #9a6517;
  --ring-bad: #a93434;
  --ring-ok: #247a3d;
  --ring-shadow: rgba(59, 51, 40, .12);
  --pulse-scale-x: .75;
  --pulse-scale-y: 1.2;

  display: grid;
  gap: .75rem;
  width: 100%;
  padding: clamp(.75rem, 1.8vw, 1rem);
  border: 1px solid var(--ring-line);
  border-radius: 8px;
  background: var(--ring-bg);
  color: var(--ring-ink);
  box-shadow: 0 18px 48px var(--ring-shadow);
}

.theme-dark .ringlab {
  --ring-bg: #111413;
  --ring-panel: #1a1f1d;
  --ring-card: #222925;
  --ring-ink: #f4f0e8;
  --ring-muted: #b6b1a6;
  --ring-line: #3a433d;
  --ring-accent: #66d1cf;
  --ring-accent-ink: #06201f;
  --ring-caution: #e6ad52;
  --ring-bad: #ff7d74;
  --ring-ok: #72d68c;
  --ring-shadow: rgba(0, 0, 0, .22);
}

.ringlab-strip,
.ringlab-presets,
.ringlab-units {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  align-items: center;
}

.ringlab-strip {
  justify-content: space-between;
}

.ringlab button {
  min-height: 2.35rem;
  border: 1px solid var(--ring-line);
  border-radius: 8px;
  background: var(--ring-panel);
  color: var(--ring-ink);
  padding: .52rem .72rem;
  font: inherit;
  font-size: .86rem;
  font-weight: 850;
  cursor: pointer;
  transition: background .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
}

.ringlab button:hover {
  border-color: var(--ring-accent);
  transform: translateY(-1px);
}

.ringlab button.active {
  border-color: var(--ring-accent);
  background: var(--ring-accent);
  color: var(--ring-accent-ink);
}

.ringlab-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(18.5rem, .82fr);
  gap: .75rem;
  align-items: start;
}

.ringlab-readout,
.ringlab-controls {
  min-width: 0;
  display: grid;
  gap: .65rem;
}

.ringlab-meter,
.ringlab-oscilloscope,
.ringlab-cells,
.ringlab-note,
.ringlab pre,
.ringlab-controls label,
.ringlab-segment,
.ringlab-firmware {
  border: 1px solid var(--ring-line);
  border-radius: 8px;
  background: var(--ring-panel);
}

.ringlab-meter {
  display: grid;
  gap: .55rem;
  padding: .72rem;
}

.ringlab-meter-head {
  display: flex;
  justify-content: space-between;
  gap: .7rem;
  align-items: center;
}

.ringlab-meter-head b {
  min-width: 5.2rem;
  border: 1px solid color-mix(in srgb, var(--ring-accent) 45%, var(--ring-line));
  border-radius: 999px;
  color: var(--ring-accent);
  padding: .28rem .55rem;
  font-size: .72rem;
  font-weight: 950;
  text-align: center;
  text-transform: uppercase;
}

.ringlab-meter strong {
  display: flex;
  align-items: baseline;
  gap: .34rem;
  color: var(--ring-accent);
  font-size: clamp(3.35rem, 9vw, 5.8rem);
  font-weight: 950;
  letter-spacing: 0;
  line-height: .78;
}

.ringlab-meter strong small {
  color: var(--ring-muted);
  font-size: 1rem;
}

.ringlab-scale {
  height: .7rem;
  overflow: hidden;
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(18, 106, 115, .16), rgba(154, 101, 23, .2), rgba(169, 52, 52, .2)),
    var(--ring-card);
}

.ringlab-scale i {
  display: block;
  width: 20%;
  height: 100%;
  border-radius: inherit;
  background: var(--ring-accent);
  transition: width .24s ease, background .16s ease;
}

.ringlab[data-risk="moderate"] .ringlab-meter strong,
.ringlab[data-risk="moderate"] .ringlab-meter-head b {
  color: var(--ring-caution);
}

.ringlab[data-risk="moderate"] .ringlab-scale i {
  background: var(--ring-caution);
}

.ringlab[data-risk="high"] .ringlab-meter strong,
.ringlab[data-risk="high"] .ringlab-meter-head b {
  color: var(--ring-bad);
}

.ringlab[data-risk="high"] .ringlab-scale i {
  background: var(--ring-bad);
}

.ringlab-oscilloscope {
  position: relative;
  min-height: 8.6rem;
  overflow: hidden;
  background:
    linear-gradient(transparent 49%, color-mix(in srgb, var(--ring-line) 70%, transparent) 50%, transparent 51%),
    repeating-linear-gradient(90deg, transparent 0 1.3rem, color-mix(in srgb, var(--ring-line) 48%, transparent) 1.3rem 1.36rem),
    var(--ring-card);
}

.ringlab-axis-line {
  position: absolute;
  inset: 50% .8rem auto;
  height: .18rem;
  border-radius: 99px;
  background: var(--ring-muted);
  opacity: .35;
}

.ringlab-pulse {
  position: absolute;
  left: .8rem;
  right: .8rem;
  height: 3rem;
  border: .32rem solid var(--ring-accent);
  border-right: 0;
  border-left: 0;
  border-radius: 50%;
  opacity: .55;
  animation: ringlab-wave 2.2s ease-in-out infinite;
}

.ringlab-pulse.a {
  top: 2rem;
}

.ringlab-pulse.b {
  top: 3.25rem;
  border-color: var(--ring-caution);
  animation-delay: .34s;
}

.ringlab-carriage {
  position: absolute;
  top: 50%;
  z-index: 2;
  width: 2.15rem;
  height: 1.45rem;
  border: .22rem solid var(--ring-panel);
  border-radius: 8px;
  background: var(--ring-accent);
  box-shadow: 0 .45rem 1rem rgba(0, 0, 0, .16);
  transform: translate(-50%, -50%);
  transition: left .24s ease, background .16s ease;
}

.ringlab[data-risk="moderate"] .ringlab-carriage {
  background: var(--ring-caution);
}

.ringlab[data-risk="high"] .ringlab-carriage {
  background: var(--ring-bad);
}

.ringlab-cells {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .45rem;
  padding: .45rem;
  background: var(--ring-card);
}

.ringlab-cells div {
  min-width: 0;
  display: grid;
  gap: .28rem;
  align-content: space-between;
  min-height: 4.35rem;
  border: 1px solid var(--ring-line);
  border-radius: 8px;
  background: var(--ring-panel);
  padding: .58rem;
}

.ringlab-cells .ringlab-wide {
  grid-column: 1 / -1;
  min-height: auto;
}

.ringlab-cells b {
  display: flex;
  flex-wrap: wrap;
  gap: .18rem .34rem;
  align-items: baseline;
  color: var(--ring-ink);
  font-size: 1.18rem;
  font-weight: 950;
  line-height: 1;
}

.ringlab-cells small {
  color: var(--ring-muted);
  font-size: .72rem;
  font-weight: 850;
}

.ringlab-meter-head span,
.ringlab-cells span,
.ringlab-note span,
.ringlab-controls span {
  display: block;
  color: var(--ring-muted);
  font-size: .68rem;
  font-weight: 950;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.ringlab-note {
  display: grid;
  gap: .34rem;
  margin: 0;
  padding: .66rem;
}

.ringlab-note em {
  color: var(--ring-muted);
  font-size: .86rem;
  font-style: normal;
  font-weight: 760;
  line-height: 1.45;
}

.ringlab pre {
  min-height: 5.2rem;
  margin: 0;
  padding: .72rem;
  overflow: auto;
  background: #171818;
  color: #f6f3ed;
  font-size: .82rem;
  line-height: 1.45;
  white-space: pre-wrap;
}

.theme-dark .ringlab pre {
  background: #080a09;
  color: #f4f0e8;
}

.ringlab-copy {
  width: 100%;
  background: var(--ring-ink);
  color: var(--ring-bg);
}

.ringlab-copy.copied {
  background: var(--ring-ok);
  color: #fff;
}

.ringlab-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .5rem;
}

.ringlab-fields label {
  position: relative;
  display: grid;
  gap: .36rem;
  padding: .62rem;
}

.ringlab-fields label:nth-child(3) {
  grid-column: 1 / -1;
}

.ringlab-mini-presets,
.ringlab-expert {
  display: grid;
  gap: .5rem;
  border: 1px solid var(--ring-line);
  border-radius: 8px;
  background: var(--ring-panel);
  padding: .58rem;
}

.ringlab-mini-presets>div {
  display: flex;
  flex-wrap: wrap;
  gap: .36rem;
}

.ringlab-mini-presets button {
  min-height: 2.05rem;
  padding: .38rem .55rem;
  font-size: .78rem;
}

.ringlab input {
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--ring-ink);
  font: inherit;
  font-size: 1.42rem;
  font-weight: 950;
  line-height: 1.1;
  outline: 0;
}

.ringlab-fields b {
  position: absolute;
  right: .62rem;
  bottom: .68rem;
  color: var(--ring-muted);
  font-size: .74rem;
  font-weight: 900;
}

.ringlab-segment {
  display: grid;
  gap: .5rem;
  padding: .58rem;
}

.ringlab-segment>div,
.ringlab-firmware {
  display: grid;
  gap: .34rem;
  padding: .28rem;
  border: 1px solid var(--ring-line);
  border-radius: 8px;
  background: var(--ring-card);
}

.ringlab-segment>div {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.ringlab-segment button,
.ringlab-firmware button {
  min-width: 0;
  background: transparent;
  overflow-wrap: anywhere;
}

.ringlab-segment button.active,
.ringlab-firmware button.active {
  background: var(--ring-panel);
  color: var(--ring-accent);
  box-shadow: inset 0 0 0 1px var(--ring-accent);
}

.ringlab-check {
  display: flex;
  gap: .55rem;
  align-items: center;
  border: 1px solid var(--ring-line);
  border-radius: 8px;
  background: var(--ring-panel);
  padding: .62rem;
  cursor: pointer;
}

.ringlab-check input {
  width: 1.05rem;
  height: 1.05rem;
  min-width: 1.05rem;
  accent-color: var(--ring-accent);
}

.ringlab-check span {
  min-width: 0;
}

.ringlab-hidden {
  display: none;
}

.ringlab-expert>button {
  width: 100%;
  background: var(--ring-card);
}

.ringlab-expert>button[aria-expanded="true"] {
  border-color: var(--ring-accent);
  color: var(--ring-accent);
  box-shadow: inset 0 0 0 1px var(--ring-accent);
}

.ringlab-expert label {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: .42rem .75rem;
  align-items: center;
  border: 0;
  background: transparent;
  padding: .15rem 0 0;
}

.ringlab-expert label input {
  grid-column: 1 / -1;
  accent-color: var(--ring-accent);
}

.ringlab-expert output {
  color: var(--ring-accent);
  font-size: .92rem;
  font-weight: 950;
}

.ringlab i[data-tip] {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 1rem;
  height: 1rem;
  margin-left: .32rem;
  border: 1px solid color-mix(in srgb, var(--ring-muted) 50%, transparent);
  border-radius: 50%;
  color: var(--ring-muted);
  font-size: .68rem;
  font-style: normal;
  font-weight: 950;
  line-height: 1;
  cursor: help;
}

.ringlab i[data-tip]::after {
  position: absolute;
  bottom: calc(100% + .5rem);
  left: 50%;
  z-index: 5;
  width: min(17rem, 72vw);
  border: 1px solid var(--ring-line);
  border-radius: 8px;
  background: var(--ring-ink);
  color: var(--ring-bg);
  content: attr(data-tip);
  font-size: .78rem;
  font-weight: 760;
  letter-spacing: 0;
  line-height: 1.35;
  opacity: 0;
  padding: .55rem .62rem;
  pointer-events: none;
  text-transform: none;
  transform: translate(-50%, .25rem);
  transition: opacity .14s ease, transform .14s ease;
}

.ringlab i[data-tip]:hover::after,
.ringlab i[data-tip]:focus-visible::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

#ringlab-validation {
  min-height: 1rem;
  margin: 0;
  color: var(--ring-bad);
  font-size: .82rem;
  font-weight: 850;
}

@keyframes ringlab-wave {

  0%,
  100% {
    transform: translateY(0) scale(var(--pulse-scale-x), var(--pulse-scale-y));
  }

  50% {
    transform: translateY(.36rem) scale(var(--pulse-scale-x), var(--pulse-scale-y));
  }
}

@media (max-width: 860px) {

  .ringlab-grid,
  .ringlab-fields {
    grid-template-columns: 1fr;
  }

  .ringlab-fields label:nth-child(3) {
    grid-column: auto;
  }
}

@media (max-width: 520px) {

  .ringlab-segment>div,
  .ringlab-cells {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {

  .ringlab *,
  .ringlab *::before,
  .ringlab *::after {
    animation-duration: .001ms;
    transition-duration: .001ms;
  }
}