/* Only frequency graphics and Powerline-specific components live here.
   Layout, type, cards, keyfacts and theme are shared with the network pages. */
.kupfer-page {
  --kupfer-heading: var(--network-heading);
  --kupfer-ink: var(--network-copy);
  --kupfer-muted: var(--network-muted);
  --kupfer-spectrum-bg: var(--network-panel);
  --kupfer-spectrum-border: var(--network-panel-border);
  --kupfer-spectrum-grid: transparent;
  --kupfer-axis-bg: linear-gradient(180deg, rgba(226, 232, 240, .36), rgba(255, 255, 255, .8));
  --kupfer-baseline-a: #cbd5e1;
  --kupfer-baseline-b: #94a3b8;
  --kupfer-tick: #64748b;
  --kupfer-tick-line: rgba(100, 116, 139, .22);
  --kupfer-bitline: rgba(37, 99, 235, .22);
  --kupfer-bitline-glow: rgba(14, 165, 233, .08);
  --kupfer-bar-shell-bg: rgba(255, 255, 255, .98);
  --kupfer-bar-label: #334155;
  --kupfer-bar-border: rgba(15, 23, 42, .08);
  --kupfer-active-bar-border: rgba(15, 23, 42, .32);
  --kupfer-detail-bg: var(--network-panel);
  --kupfer-detail-border: var(--network-panel-border);
  --kupfer-detail-shadow: none;
  --kupfer-focus-ring: var(--network-focus-ring);
}

html.darkmode .kupfer-page {
  --kupfer-axis-bg: linear-gradient(180deg, rgba(30, 41, 59, .7), rgba(8, 15, 28, .52));
  --kupfer-baseline-a: #475569;
  --kupfer-baseline-b: #94a3b8;
  --kupfer-tick: #cbd5e1;
  --kupfer-tick-line: rgba(148, 163, 184, .28);
  --kupfer-bitline: rgba(56, 189, 248, .34);
  --kupfer-bitline-glow: rgba(56, 189, 248, .12);
  --kupfer-bar-shell-bg: rgba(248, 250, 252, .16);
  --kupfer-bar-label: #f8fafc;
  --kupfer-bar-border: rgba(255, 255, 255, .12);
  --kupfer-active-bar-border: rgba(255, 255, 255, .45);
}

.spectrum-desktop-shell {
  overflow: hidden;
  border-radius: 1.75rem;
  border: 1px solid var(--kupfer-spectrum-border);
  background: var(--kupfer-spectrum-bg);
  box-shadow: var(--kupfer-detail-shadow);
}

.spectrum-desktop {
  position: relative;
  min-height: 22.4rem;
  --spectrum-pad-x: 1.25rem;
  --spectrum-inner-width: calc(100% - (var(--spectrum-pad-x) * 2));
  border-radius: 1.75rem 1.75rem 0 0;
  background: transparent;
  overflow: hidden;
}

.spectrum-desktop::before {
  content: "";
  position: absolute;
  inset: var(--spectrum-pad-x);
  border-radius: 1.25rem;
  background: var(--kupfer-spectrum-grid);
  pointer-events: none;
}

.spectrum-bitline {
  position: absolute;
  left: var(--spectrum-pad-x);
  right: var(--spectrum-pad-x);
  top: 2.35rem;
  height: 15rem;
  pointer-events: none;
  z-index: 1;
}

.spectrum-bitline .bitline-glow {
  fill: none;
  stroke: var(--kupfer-bitline-glow);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 10;
}

.spectrum-bitline .bitline-main {
  fill: none;
  stroke: var(--kupfer-bitline);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.4;
  stroke-dasharray: 6 8;
}

.spectrum-axis-band {
  position: absolute;
  left: var(--spectrum-pad-x);
  right: var(--spectrum-pad-x);
  top: 2.15rem;
  height: 15.4rem;
  border-radius: 0;
  border: 0;
  background: var(--kupfer-axis-bg);
  z-index: 0;
}

.spectrum-baseline {
  position: absolute;
  left: var(--spectrum-pad-x);
  right: var(--spectrum-pad-x);
  top: 18.25rem;
  height: 2px;
  background: linear-gradient(90deg, var(--kupfer-baseline-a), var(--kupfer-baseline-b));
  z-index: 2;
}

.spectrum-tick {
  position: absolute;
  top: 1.45rem;
  width: 0;
  color: var(--kupfer-tick);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  z-index: 2;
}

.spectrum-tick::after {
  content: "";
  position: absolute;
  left: 0;
  top: 1.82rem;
  width: 1px;
  height: 16.1rem;
  background: var(--kupfer-tick-line);
}

.spectrum-tick-label {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  text-align: left;
}

.spectrum-tick--start .spectrum-tick-label,
.mobile-tick--start .mobile-tick-label {
  left: 0;
  transform: none;
}

.spectrum-tick--end .spectrum-tick-label,
.mobile-tick--end .mobile-tick-label {
  left: auto;
  right: 0;
  transform: none;
  text-align: right;
}

.spectrum-item {
  position: absolute;
  inset: 0;
}

.spectrum-item-button {
  position: absolute;
  left: calc(var(--spectrum-pad-x) + (var(--spectrum-inner-width) * (var(--start-pct) / 100)));
  width: calc(var(--spectrum-inner-width) * ((var(--end-pct) - var(--start-pct)) / 100));
  min-width: 0.45rem;
  top: var(--bar-top);
  height: 1.05rem;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  z-index: 2;
}

.spectrum-item-button.is-active .spectrum-bar {
  border-color: var(--kupfer-active-bar-border);
}

.spectrum-item-button.is-active {
  z-index: 4;
}

.spectrum-item-button:focus-visible {
  outline: 2px solid var(--kupfer-focus-ring);
  outline-offset: 3px;
  border-radius: 999px;
}

.spectrum-bar {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0 0.45rem;
  border-radius: 999px;
  background: var(--kupfer-bar-shell-bg);
  border: 1px solid var(--kupfer-bar-border);
  overflow: visible;
}

.spectrum-bar::before,
.spectrum-bar::after {
  content: "";
  flex: 1 1 auto;
  min-width: 0.3rem;
  height: 0.38rem;
  border-radius: 999px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 84%, white 16%), var(--accent));
}

.spectrum-bar-label {
  position: relative;
  min-width: max-content;
  padding: 0 0.05rem;
  color: var(--kupfer-bar-label);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1;
  pointer-events: none;
}

.spectrum-bar--continuous {
  gap: 0;
  padding: 0 0.28rem;
}

.spectrum-bar--continuous::before {
  flex-basis: 100%;
}

.spectrum-bar--continuous::after,
.spectrum-bar--continuous .spectrum-bar-label {
  display: none;
}

.spectrum-details {
  margin-top: 0;
  padding: 1rem 1.05rem;
  border-radius: 0 0 1.75rem 1.75rem;
  border-top: 1px solid var(--kupfer-detail-border);
  border-left: 0;
  border-right: 0;
  border-bottom: 0;
  background: var(--kupfer-detail-bg);
  box-shadow: none;
}

.kupfer-detail-list {
  margin-top: 0.85rem;
  padding-left: 1.15rem;
  color: var(--kupfer-ink);
  font-size: 0.92rem;
  line-height: 1.65;
  list-style: disc;
}

.kupfer-detail-list li + li {
  margin-top: 0.35rem;
}

.mobile-spectrum {
  position: relative;
  height: 15.85rem;
  --mobile-pad-x: 0.9rem;
  --mobile-inner-width: calc(100% - (var(--mobile-pad-x) * 2));
  border-radius: 1.35rem;
  border: 1px solid var(--kupfer-spectrum-border);
  background: var(--kupfer-spectrum-bg);
  overflow: hidden;
}

.mobile-spectrum::before {
  content: "";
  position: absolute;
  inset: var(--mobile-pad-x);
  border-radius: 1rem;
  background: var(--kupfer-spectrum-grid);
  pointer-events: none;
}

.mobile-bitline {
  position: absolute;
  left: var(--mobile-pad-x);
  right: var(--mobile-pad-x);
  top: 0.7rem;
  height: 12.6rem;
  pointer-events: none;
  z-index: 0;
}

.mobile-bitline .bitline-glow {
  fill: none;
  stroke: var(--kupfer-bitline-glow);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 8;
}

.mobile-bitline .bitline-main {
  fill: none;
  stroke: var(--kupfer-bitline);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  stroke-dasharray: 5 8;
}

.mobile-band {
  position: absolute;
  left: calc(var(--mobile-pad-x) + (var(--mobile-inner-width) * (var(--start-pct) / 100)));
  width: calc(var(--mobile-inner-width) * ((var(--end-pct) - var(--start-pct)) / 100));
  min-width: 0.35rem;
  top: var(--bar-top);
  height: 0.8rem;
  border-radius: 999px;
  background: var(--kupfer-bar-shell-bg);
  border: 1px solid var(--kupfer-bar-border);
  overflow: hidden;
}

.mobile-band::after {
  content: "";
  position: absolute;
  left: 0.18rem;
  right: 0.18rem;
  top: 50%;
  height: 0.32rem;
  transform: translateY(-50%);
  border-radius: 999px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 84%, white 16%), var(--accent));
}

.mobile-tick {
  position: absolute;
  bottom: 0.42rem;
  width: 0;
  font-size: 0.67rem;
  color: var(--kupfer-tick);
  font-weight: 700;
}

.mobile-tick-label {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}

.kupfer-detail-kind {
  color: var(--kupfer-muted);
}

.kupfer-detail-title {
  color: var(--kupfer-heading);
}

.kupfer-detail-range,
.kupfer-detail-copy {
  color: var(--kupfer-ink);
}

.plc-group-title {
  color: var(--kupfer-heading);
}

.plc-heading-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.plc-heading-line {
  flex: 1 1 auto;
  min-width: 1.5rem;
  height: 0.2rem;
  border-radius: 999px;
  background: #0f172a;
}

html.darkmode .plc-heading-line,
html.darkmode .kupfer-minus-glyph {
  background: #f8fafc;
}

.plc-vendor-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.87rem;
  line-height: 1.45;
  color: var(--kupfer-ink);
}

.plc-vendor-table th,
.plc-vendor-table td {
  padding: 0.55rem 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid color-mix(in srgb, var(--network-panel-border) 88%, transparent);
}

.plc-vendor-table th {
  width: 6.5rem;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kupfer-muted);
}

.plc-vendor-table tr:last-child th,
.plc-vendor-table tr:last-child td {
  border-bottom: 0;
}

.kupfer-minus-marker {
  position: relative;
  width: 1.6rem;
  height: 1.6rem;
  flex: 0 0 1.6rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.18);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: none;
}

.kupfer-minus-marker::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0.9rem;
  height: 0.2rem;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  background: #0f172a;
}

.kupfer-minus-glyph {
  position: relative;
  width: 1.05rem;
  height: 0.2rem;
  flex: 0 0 1.05rem;
  border-radius: 999px;
  background: #0f172a;
}

html.darkmode .kupfer-minus-marker {
  border-color: rgba(148, 163, 184, 0.24);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: none;
}
.kupfer-page h4 { font-family: "Sora", "Plus Jakarta Sans", sans-serif; }