:root {
  color-scheme: dark;
  --bg: #07101c;
  --panel: rgba(10, 20, 35, 0.82);
  --panel-line: rgba(162, 190, 255, 0.12);
  --text: #eef4ff;
  --muted: #94a8ce;
  --line-a: #76ddff;
  --line-b: #ffae72;
  --line-sum: #f8f7ff;
  --node: #8fffcf;
  --accent: #7caeff;
  --shadow: 0 22px 56px rgba(0, 0, 0, 0.35);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", "SF Pro Display", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(124, 174, 255, 0.12), transparent 30%),
    radial-gradient(circle at top right, rgba(118, 221, 255, 0.08), transparent 24%),
    linear-gradient(180deg, #07101c 0%, #040914 100%);
  color: var(--text);
}

body {
  padding: 18px;
}

button,
input {
  font: inherit;
}

.app-shell {
  max-width: 1520px;
  margin: 0 auto;
}

.topbar,
.mode-strip,
.graph-shell,
.control-strip,
.preset-strip,
.status-strip {
  border: 1px solid var(--panel-line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 16px 18px;
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.titleblock h1,
.titleblock p {
  margin: 0;
}

.titleblock {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 14px;
  row-gap: 4px;
  align-items: center;
}

.title-icon {
  grid-row: 1 / span 2;
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 10px 22px rgba(118, 221, 255, 0.18));
}

.kicker {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.titleblock h1 {
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  line-height: 1;
}

.transport {
  display: flex;
  gap: 10px;
}

.workspace {
  display: grid;
  gap: 14px;
}

.mode-strip {
  display: inline-flex;
  gap: 8px;
  padding: 8px;
  border-radius: 18px;
  width: fit-content;
}

.graph-shell {
  padding: 14px;
  border-radius: 28px;
  position: relative;
}

.view-strip {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  display: inline-flex;
  gap: 8px;
  padding: 8px;
  border-radius: 16px;
  background: rgba(7, 14, 26, 0.56);
  backdrop-filter: blur(14px);
}

#waveCanvas {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(10, 20, 35, 0.88), rgba(3, 9, 18, 0.98));
}

.graph-meta,
.preset-strip,
.status-strip {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.graph-meta {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.graph-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.swatch {
  width: 12px;
  height: 12px;
  display: inline-block;
  border-radius: 999px;
}

.swatch-a { background: var(--line-a); }
.swatch-b { background: var(--line-b); }
.swatch-sum { background: var(--line-sum); }
.swatch-node { background: var(--node); }

.control-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  padding: 12px;
  border-radius: 20px;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--muted);
  font-size: 0.8rem;
}

.field-ui {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
}

.field-range {
  width: 100%;
  margin: 0;
  appearance: none;
  background: transparent;
}

.field-range::-webkit-slider-runnable-track {
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(118, 221, 255, 0.2), rgba(124, 174, 255, 0.55));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.field-range::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  margin-top: -5px;
  border-radius: 50%;
  background: #f4f8ff;
  border: 2px solid rgba(124, 174, 255, 0.7);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.28);
}

.field-range::-moz-range-track {
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(118, 221, 255, 0.2), rgba(124, 174, 255, 0.55));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.field-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #f4f8ff;
  border: 2px solid rgba(124, 174, 255, 0.7);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.28);
}

.value-button,
.value-input {
  min-width: 110px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 10px 12px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.value-button {
  cursor: pointer;
  position: relative;
  padding-right: 26px;
}

.value-button::after {
  content: "edit";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.72;
}

.value-input {
  width: 100%;
}

.is-hidden {
  display: none;
}

.field-frequency {
  grid-column: span 2;
}

.preset-strip,
.status-strip {
  padding: 10px 12px;
  border-radius: 18px;
}

.preset-button,
.mode-button,
.view-button,
.primary-button,
.ghost-button {
  border: 0;
  border-radius: 999px;
  padding: 10px 14px;
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease, background 140ms ease;
}

.preset-button,
.mode-button,
.view-button,
.ghost-button {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.mode-button.active,
.view-button.active {
  background: linear-gradient(135deg, rgba(181, 212, 255, 0.18), rgba(121, 219, 255, 0.16));
  box-shadow: inset 0 0 0 1px rgba(124, 174, 255, 0.28);
}

.primary-button {
  background: linear-gradient(135deg, #b5d4ff, #79dbff);
  color: #04101d;
  font-weight: 700;
}

.status-item {
  min-width: 120px;
  display: grid;
  gap: 4px;
}

.status-item span {
  color: var(--muted);
  font-size: 0.78rem;
}

.status-item strong {
  font-size: 0.95rem;
}

button:hover,
input:focus {
  transform: translateY(-1px);
}

input:focus {
  outline: 1px solid rgba(124, 174, 255, 0.42);
}

.value-button:hover,
.value-input:focus,
.field-range:focus {
  outline: 1px solid rgba(124, 174, 255, 0.42);
}

@media (max-width: 980px) {
  .control-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .field-frequency {
    grid-column: span 2;
  }
}

@media (max-width: 700px) {
  body {
    padding: 10px;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .titleblock {
    grid-template-columns: 40px 1fr;
  }

  .title-icon {
    width: 40px;
    height: 40px;
  }

  .transport {
    width: 100%;
  }

  .transport button {
    flex: 1;
  }

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

  .field-frequency {
    grid-column: span 1;
  }

  .field-ui {
    grid-template-columns: 1fr;
  }
}