:root {
  color-scheme: dark;
  --bg: #090c0b;
  --panel: rgba(18, 23, 21, 0.88);
  --panel-strong: #151a18;
  --line: rgba(225, 235, 229, 0.12);
  --line-strong: rgba(225, 235, 229, 0.2);
  --text: #edf2ef;
  --muted: #87908b;
  --faint: #5e6762;
  --mint: #b9f6d2;
  --green: #69e89f;
  --coral: #ff765f;
  --yellow: #e4d67b;
  --mono: "DM Mono", ui-monospace, monospace;
  --sans: Inter, system-ui, sans-serif;
  --display: Manrope, Inter, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px;
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

button,
select,
input {
  font: inherit;
}

button,
select {
  color: inherit;
}

button {
  cursor: pointer;
}

.ambient {
  position: fixed;
  z-index: -1;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  filter: blur(130px);
  opacity: 0.07;
  pointer-events: none;
}

.ambient-one {
  top: -25vw;
  right: -8vw;
  background: var(--green);
}

.ambient-two {
  bottom: -30vw;
  left: -20vw;
  background: var(--coral);
}

main {
  width: min(1440px, calc(100% - 64px));
  margin: 0 auto;
}

#dashboard {
  display: flex;
  flex-direction: column;
}

.site-header { order: 0; }
.bandwidth-panel { order: 2; }
.diagnostic-only { order: 1; }
footer { order: 3; }

body.channel-focused {
  background: var(--bg);
}

body.channel-focused .ambient,
body.channel-focused .diagnostic-only {
  display: none;
}

body.channel-focused #dashboard {
  width: min(980px, calc(100% - 40px));
}

body.channel-focused .panel {
  background: #111614;
  box-shadow: none;
  backdrop-filter: none;
}

body.channel-focused .bandwidth-panel {
  margin-top: 28px;
}

body.channel-focused *,
body.channel-focused *::before,
body.channel-focused *::after {
  animation: none !important;
  transition: none !important;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  font: 600 14px/1 var(--display);
  letter-spacing: 0.17em;
  text-decoration: none;
}

.brand small {
  margin-left: 8px;
  color: var(--faint);
  font: 400 9px/1 var(--mono);
  letter-spacing: 0.08em;
}

.brand-mark {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  width: 29px;
  height: 29px;
  padding: 7px;
  border: 1px solid rgba(185, 246, 210, 0.35);
  border-radius: 50%;
}

.brand-mark i {
  width: 3px;
  border-radius: 2px;
  background: var(--mint);
}

.brand-mark i:nth-child(1) { height: 6px; }
.brand-mark i:nth-child(2) { height: 13px; }
.brand-mark i:nth-child(3) { height: 9px; }

.runtime-badges {
  display: flex;
  gap: 8px;
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.mode-button {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--muted);
  font: 500 9px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
}

.mode-button:hover {
  border-color: rgba(185, 246, 210, 0.4);
  color: var(--mint);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--faint);
  font: 500 9px/1 var(--mono);
  letter-spacing: 0.1em;
}

.badge i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.badge.active {
  border-color: rgba(105, 232, 159, 0.24);
  color: var(--green);
}

.badge.warning {
  border-color: rgba(228, 214, 123, 0.24);
  color: var(--yellow);
}

.hero {
  display: grid;
  grid-template-columns: 1.6fr 0.7fr;
  align-items: end;
  gap: 64px;
  padding: 68px 0 50px;
}

.eyebrow,
.label {
  margin: 0 0 15px;
  color: var(--muted);
  font: 500 9px/1 var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  display: inline-block;
  width: 22px;
  height: 1px;
  margin: 0 10px 3px 0;
  background: var(--coral);
  content: "";
}

h1 {
  max-width: 900px;
  margin: 0;
  font: 500 clamp(44px, 5.1vw, 78px)/0.99 var(--display);
  letter-spacing: -0.055em;
}

h1 em {
  color: var(--mint);
  font-style: normal;
}

.hero-copy {
  max-width: 410px;
  margin: 0 0 5px;
  padding-left: 22px;
  border-left: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 18px 70px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(18px);
}

.status-panel {
  display: grid;
  grid-template-columns: 1.75fr repeat(3, 1fr);
  margin-bottom: 18px;
}

.status-main,
.metric {
  min-width: 0;
  padding: 27px 30px;
}

.metric {
  border-left: 1px solid var(--line);
}

.pressure-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

#pressure-value {
  font: 500 46px/1 var(--display);
  letter-spacing: -0.055em;
}

.state-pill {
  padding: 7px 10px;
  border: 1px solid currentColor;
  border-radius: 99px;
  font: 500 9px/1 var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.state-waiting { color: var(--muted); }
.state-idle { color: var(--green); }
.state-warm { color: var(--yellow); }
.state-hot { color: var(--coral); }

.muted,
.metric span,
.fine-print {
  color: var(--muted);
}

.muted {
  margin: 10px 0 0;
  font-size: 11px;
}

.metric {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.metric .label {
  margin-bottom: 13px;
}

.metric strong {
  margin-bottom: 7px;
  font: 500 23px/1 var(--mono);
  letter-spacing: -0.04em;
}

.metric span {
  overflow: hidden;
  font: 400 10px/1.4 var(--mono);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.grid {
  display: grid;
  gap: 18px;
}

.charts-grid {
  grid-template-columns: 1.65fr 1fr;
}

.chart-panel,
.controls-panel,
.experiment-panel,
.events-panel {
  padding: 26px 28px;
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}

.panel-heading .label {
  margin-bottom: 8px;
}

h2,
h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 500;
}

h2 {
  font-size: 18px;
  letter-spacing: -0.025em;
}

h3 {
  font-size: 13px;
}

.legend,
.mono-note {
  color: var(--muted);
  font: 400 9px/1 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.legend {
  display: flex;
  align-items: center;
  gap: 7px;
}

.chart-actions,
.frame-meta {
  display: flex;
  align-items: flex-end;
  flex-direction: column;
  gap: 10px;
}

.switch-control {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  cursor: pointer;
  font: 500 9px/1 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.switch-control input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.switch-track {
  position: relative;
  width: 25px;
  height: 13px;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.04);
}

.switch-track i {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform 120ms, background 120ms;
}

.switch-control input:checked + .switch-track i {
  background: var(--coral);
  transform: translateX(12px);
}

.switch-control input:focus-visible + .switch-track {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

.chart-help {
  margin: 7px 0 0;
  color: var(--faint);
  font: 400 8px/1.4 var(--mono);
  text-transform: uppercase;
}

.frame-key {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font: 400 8px/1 var(--mono);
  text-transform: uppercase;
}

.legend-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.coral { background: var(--coral); }
.mint { background: var(--mint); }
.yellow { background: var(--yellow); }

.legend-line {
  width: 14px;
  height: 1px;
  margin-left: 7px;
  background: var(--muted);
}

.chart-wrap {
  position: relative;
  height: 205px;
}

canvas {
  width: 100%;
  height: 100%;
}

.chart-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--faint);
  font: 400 10px/1 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.chart-scale,
.frame-summary {
  display: flex;
  justify-content: space-between;
  color: var(--faint);
  font: 400 9px/1 var(--mono);
  text-transform: uppercase;
}

.chart-scale {
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.frame-summary {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.frame-summary b {
  margin-right: 4px;
  color: var(--text);
  font-weight: 500;
}

.frame-summary .accent b {
  color: var(--coral);
}

.lower-grid {
  grid-template-columns: 0.72fr 1.3fr 1fr;
  margin-top: 18px;
}

.button,
select {
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.035);
  font: 500 10px/1 var(--mono);
}

.button {
  min-height: 35px;
  padding: 0 14px;
  transition: border-color 150ms, background 150ms, transform 150ms;
}

.button:hover {
  border-color: rgba(185, 246, 210, 0.5);
  background: rgba(185, 246, 210, 0.07);
}

.button:active {
  transform: translateY(1px);
}

.button-quiet {
  min-height: 30px;
  color: var(--muted);
}

.button-danger {
  border-color: rgba(255, 118, 95, 0.36);
  color: #ff9b8a;
}

.button-danger.active {
  border-color: var(--coral);
  background: rgba(255, 118, 95, 0.14);
}

.button-primary {
  border-color: rgba(105, 232, 159, 0.42);
  color: var(--mint);
}

.button:disabled,
.text-button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}

select {
  min-width: 100px;
  height: 34px;
  padding: 0 28px 0 10px;
}

.fine-print {
  margin: 15px 0;
  font-size: 10px;
  line-height: 1.55;
}

.text-button {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 14px 0 0;
  border: 0;
  border-top: 1px solid var(--line);
  background: none;
  color: var(--mint);
  font: 500 10px/1 var(--mono);
}

.lab-icon {
  color: var(--coral);
  font-size: 26px;
}

.experiment {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.experiment p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
}

.load-control {
  display: flex;
  align-items: flex-end;
  gap: 10px;
}

.load-control label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  color: var(--muted);
  font: 400 8px/1 var(--mono);
  text-align: right;
  text-transform: uppercase;
}

input[type="range"] {
  width: 95px;
  accent-color: var(--coral);
}

.event-log {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-height: 180px;
  margin: 0;
  padding: 0;
  overflow: auto;
  list-style: none;
}

.event-log li {
  display: grid;
  grid-template-columns: 49px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font: 400 9px/1.25 var(--mono);
}

.event-log li b {
  color: var(--text);
  font-weight: 500;
}

.event-log .cause-cpu { color: var(--coral); }
.event-log .cause-main { color: var(--mint); }
.event-log .cause-unknown { color: var(--yellow); }

.event-log .event-empty {
  display: block;
  color: var(--faint);
}

.bandwidth-panel {
  margin-top: 18px;
  padding: 28px;
}

.bandwidth-heading {
  align-items: center;
}

.bandwidth-copy {
  max-width: 720px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

.pair-row {
  display: grid;
  grid-template-columns: auto minmax(190px, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font: 10px/1 var(--mono);
  text-transform: uppercase;
}

.pair-row input,
.bandwidth-settings input {
  width: 100%;
  min-width: 0;
  height: 35px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  outline: 0;
  background: rgba(0, 0, 0, 0.24);
  color: var(--text);
  font: 11px/1 var(--mono);
}

.pair-row input:focus,
.bandwidth-settings input:focus {
  border-color: rgba(185, 246, 210, 0.5);
}

.bandwidth-settings {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 14px;
  padding: 19px 0;
}

.basic-channel-settings {
  grid-template-columns: repeat(3, minmax(140px, 1fr));
}

.advanced-settings {
  border-top: 1px solid var(--line);
}

.advanced-settings summary {
  padding: 14px 0;
  color: var(--muted);
  cursor: pointer;
  font: 9px/1 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.advanced-settings[open] summary {
  color: var(--mint);
}

.advanced-settings .bandwidth-settings {
  padding-top: 5px;
}

.bandwidth-settings label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  color: var(--muted);
  font: 9px/1.2 var(--mono);
  text-transform: uppercase;
}

.bandwidth-settings label small {
  color: var(--faint);
  font-size: 8px;
  font-weight: 400;
}

.bandwidth-settings .channel-switch {
  flex-direction: row;
  align-items: center;
  align-self: end;
  min-height: 35px;
  padding: 0 10px;
  border: 1px solid var(--line);
  cursor: pointer;
}

.bandwidth-settings .channel-switch input {
  width: auto;
  height: auto;
  accent-color: var(--coral);
}

.bandwidth-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.channel-export {
  width: auto;
  min-height: 35px;
  margin-left: auto;
  padding: 0 2px;
  border-top: 0;
  gap: 18px;
}

.bandwidth-result {
  display: grid;
  grid-template-columns: minmax(210px, 0.45fr) 1fr;
  align-items: center;
  gap: 28px;
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.15);
}

.bandwidth-result .label {
  margin-bottom: 7px;
}

#channel-best-rate {
  color: var(--mint);
  font: 500 23px/1 var(--mono);
}

#channel-progress {
  margin: 0;
  color: var(--muted);
  font: 10px/1.55 var(--mono);
}

.channel-method {
  margin: 14px 0 0;
  color: var(--faint);
  font: 9px/1.55 var(--mono);
}

.channel-method b {
  color: var(--muted);
  font-weight: 500;
}

.channel-table-scroll { overflow-x: auto; }

.channel-results-heading {
  display: grid;
  grid-template-columns: 90px 80px 75px 100px 1fr;
  gap: 12px;
  margin-top: 18px;
  color: var(--faint);
  font: 8px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.channel-results {
  max-height: 250px;
  margin: 7px 0 0;
  padding: 0;
  overflow: auto;
  list-style: none;
  color: var(--muted);
  font: 10px/1.45 var(--mono);
}

.channel-results li {
  display: grid;
  grid-template-columns: 90px 80px 75px 100px 1fr;
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid var(--line);
}

.channel-results .pass { color: var(--green); }
.channel-results .fail { color: var(--coral); }

body.channel-measuring .ambient {
  display: none;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 27px 2px 42px;
  color: var(--faint);
  font: 400 9px/1.5 var(--mono);
  text-transform: uppercase;
}

[hidden] {
  display: none !important;
}

body.text-only {
  background: #000;
}

body.text-only .ambient {
  display: none;
}

.text-mode {
  min-height: 100vh;
  padding: 12px;
  background: #000;
  color: #fff;
  font: 14px/1.45 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.text-mode-button {
  padding: 3px 7px;
  border: 1px solid #666;
  border-radius: 0;
  background: #000;
  color: #ddd;
  font: inherit;
}

.text-pressure-output {
  margin: 12px 0 0;
  padding: 0;
  white-space: pre;
}

@media (max-width: 1100px) {
  .status-panel { grid-template-columns: 1.5fr repeat(3, 1fr); }
  .status-main, .metric { padding: 23px 20px; }
  .lower-grid { grid-template-columns: 0.8fr 1.2fr; }
  .events-panel { grid-column: 1 / -1; }
}

@media (max-width: 800px) {
  main { width: min(100% - 32px, 700px); }
  .hero { grid-template-columns: 1fr; gap: 28px; padding-top: 50px; }
  .hero-copy { max-width: 560px; }
  .status-panel { grid-template-columns: 1fr 1fr; }
  .status-main { grid-column: 1 / -1; }
  .metric:nth-of-type(3) { border-left: 0; }
  .charts-grid, .lower-grid { grid-template-columns: 1fr; }
  .bandwidth-settings, .basic-channel-settings { grid-template-columns: 1fr 1fr; }
  .events-panel { grid-column: auto; }
}

@media (max-width: 520px) {
  .ambient { display: none; }
  main { width: calc(100% - 22px); }
  .site-header { min-height: 72px; }
  .brand small, #worker-badge { display: none; }
  .header-actions, .runtime-badges { gap: 4px; }
  .badge { padding: 6px 7px; font-size: 8px; }
  .hero { padding: 42px 5px 34px; }
  h1 { font-size: 42px; }
  .status-panel { grid-template-columns: 1fr; }
  .status-main { grid-column: auto; }
  .metric { border-top: 1px solid var(--line); border-left: 0; }
  .chart-panel, .controls-panel, .experiment-panel, .events-panel { padding: 22px 19px; }
  .experiment { grid-template-columns: 1fr; }
  .bandwidth-panel { padding: 22px 19px; }
  .pair-row { grid-template-columns: 1fr 1fr; }
  .pair-row label, .pair-row input { grid-column: 1 / -1; }
  .bandwidth-settings, .basic-channel-settings { grid-template-columns: 1fr; }
  .bandwidth-actions { align-items: stretch; flex-direction: column; }
  .channel-export { width: 100%; margin-left: 0; }
  .bandwidth-result { grid-template-columns: 1fr; }
  .channel-results, .channel-results-heading {
    min-width: 590px;
  }
  .load-control { justify-content: space-between; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}