:root {
  color-scheme: dark;
  --bg: #06080e;
  --surface: rgba(12, 16, 26, 0.92);
  --surface-soft: rgba(18, 23, 36, 0.72);
  --hairline: rgba(148, 162, 210, 0.12);
  --hairline-strong: rgba(148, 162, 210, 0.24);
  --text: #e2e7f4;
  --muted: #6e7a96;
  --dim: #3d4459;
  --gold: #82c4d4;
  --blue: #a992e8;
  --red: #df7a8e;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.85), 0 4px 24px rgba(0, 0, 0, 0.6);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Aptos", "Segoe UI", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  min-height: 36px;
  color: var(--text);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.018));
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 720;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}

button:hover {
  border-color: var(--hairline-strong);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.028));
}

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

.app-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 38% 36%, rgba(100, 130, 220, 0.07), transparent 48%),
    radial-gradient(ellipse at 68% 64%, rgba(169, 146, 232, 0.05), transparent 42%),
    linear-gradient(160deg, #04060d 0%, #070a14 55%, #050810 100%);
}

.app-shell::before,
.app-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.app-shell::before {
  background:
    linear-gradient(rgba(255, 255, 255, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 50%, black 0%, transparent 72%);
}

.app-shell::after {
  background:
    radial-gradient(circle at 50% 50%, transparent 42%, rgba(0, 0, 0, 0.64) 100%),
    linear-gradient(90deg, rgba(0, 0, 0, 0.48), transparent 18%, transparent 82%, rgba(0, 0, 0, 0.48));
}

#universe {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.topbar,
.control-rail,
.readout-panel {
  position: absolute;
  z-index: 2;
  border: 1px solid var(--hairline);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px) saturate(0.92);
}

.topbar::before,
.control-rail::before,
.readout-panel::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(148, 162, 210, 0.45), transparent);
}

.topbar {
  top: 18px;
  left: 18px;
  right: 18px;
  min-height: 72px;
  display: grid;
  grid-template-columns: minmax(170px, 0.58fr) minmax(390px, 1.25fr) minmax(330px, 0.9fr);
  align-items: center;
  gap: 22px;
  padding: 14px 16px;
  border-radius: 5px;
}

.identity {
  min-width: 0;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(1.25rem, 2vw, 1.72rem);
  font-weight: 520;
  line-height: 1;
}

h2 {
  color: #eef3ff;
  font-size: 1rem;
  font-weight: 580;
  line-height: 1.25;
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(148, 162, 210, 0.1);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.28);
}

.mode-tab {
  min-width: 0;
  border: 0;
  border-right: 1px solid rgba(148, 162, 210, 0.09);
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  white-space: nowrap;
}

.mode-tab:last-child {
  border-right: 0;
}

.mode-tab.active {
  color: var(--text);
  background: linear-gradient(180deg, rgba(169, 146, 232, 0.16), rgba(169, 146, 232, 0.03));
  box-shadow: inset 0 -2px 0 rgba(169, 146, 232, 0.75);
}

.status-strip,
.readout-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid rgba(148, 162, 210, 0.085);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.2);
}

.status-strip div,
.readout-grid div {
  min-width: 0;
  padding: 10px 12px;
  border-right: 1px solid rgba(148, 162, 210, 0.075);
}

.status-strip div:last-child,
.readout-grid div:last-child {
  border-right: 0;
}

.status-strip span,
.readout-grid span {
  display: block;
  color: var(--dim);
  font-size: 0.66rem;
  font-weight: 760;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.status-strip strong,
.readout-grid strong {
  display: block;
  margin-top: 5px;
  overflow: hidden;
  color: #eef3ff;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.96rem;
  font-weight: 560;
  font-variant-numeric: tabular-nums;
}

.control-rail {
  left: 18px;
  bottom: 18px;
  width: min(368px, calc(100vw - 36px));
  padding: 18px;
  border-radius: 5px;
}

.control-rail::after,
.readout-panel::after {
  position: absolute;
  top: 14px;
  right: 16px;
  color: var(--dim);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.control-rail::after {
  content: "PARAMETERS";
}

.readout-panel::after {
  content: "TELEMETRY";
}

.control-row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) 38px;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.select-row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  margin: 2px 0 16px;
}

.select-row span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.select-row select {
  width: 100%;
  min-height: 34px;
  color: var(--text);
  border: 1px solid rgba(148, 162, 210, 0.14);
  border-radius: 4px;
  background: #08090f;
  padding: 0 10px;
  font-size: 0.78rem;
}

.control-row span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.control-row output {
  color: #dbe4f7;
  text-align: right;
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  height: 18px;
  margin: 0;
  appearance: none;
  background: transparent;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: linear-gradient(90deg, rgba(169, 146, 232, 0.3), rgba(130, 196, 212, 0.85));
}

input[type="range"]::-webkit-slider-thumb {
  width: 12px;
  height: 12px;
  margin-top: -5px;
  appearance: none;
  border: 1px solid rgba(226, 231, 244, 0.78);
  border-radius: 50%;
  background: #0b0b0b;
  box-shadow: 0 0 0 4px rgba(169, 146, 232, 0.12);
}

input[type="range"]::-moz-range-track {
  height: 2px;
  background: linear-gradient(90deg, rgba(169, 146, 232, 0.3), rgba(130, 196, 212, 0.85));
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 1px solid rgba(226, 231, 244, 0.78);
  border-radius: 50%;
  background: #0b0b0b;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-top: 6px;
}

#audio[aria-pressed="true"] {
  border-color: rgba(130, 196, 212, 0.52);
  color: rgba(210, 240, 248, 0.95);
  background: linear-gradient(180deg, rgba(130, 196, 212, 0.14), rgba(130, 196, 212, 0.03));
}

.readout-panel {
  right: 18px;
  bottom: 18px;
  width: min(444px, calc(100vw - 36px));
  padding: 18px;
  border-radius: 5px;
}

.readout-header {
  margin-bottom: 14px;
  padding-right: 90px;
}

.readout-header p {
  margin: 0 0 5px;
  color: var(--gold);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.readout-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 13px;
}

.readout-grid div {
  padding: 10px;
}

#spectrum {
  width: 100%;
  height: 92px;
  display: block;
  border: 1px solid rgba(148, 162, 210, 0.085);
  border-radius: 4px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    rgba(0, 0, 0, 0.38);
  background-size: 100% 23px;
}

@media (max-width: 980px) {
  body {
    overflow-y: auto;
  }

  .app-shell {
    min-height: 100vh;
    height: 100svh;
  }

  .topbar {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .status-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .control-rail,
  .readout-panel {
    width: calc(50vw - 27px);
  }

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

@media (max-width: 720px) {
  .topbar {
    top: 10px;
    left: 10px;
    right: 10px;
    padding: 12px;
    gap: 10px;
  }

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

  .status-strip {
    grid-template-columns: 1fr;
  }

  .control-rail,
  .readout-panel {
    left: 10px;
    right: 10px;
    width: auto;
  }

  .control-rail {
    bottom: 170px;
  }

  .readout-panel {
    bottom: 10px;
  }

  .control-row {
    grid-template-columns: 72px minmax(0, 1fr) 34px;
  }
}