:root {
  --bg: #0c1017;
  --panel: #101726e6;
  --panel-outline: rgba(255, 255, 255, 0.08);
  --card-hover: rgba(255, 255, 255, 0.06);
  --accent: #4de1b2;
  --accent-2: #4bc0f5;
  --accent-3: #f3b169;
  --text: #e9edf7;
  --muted: #b6c2d3;
  --danger: #ff6b7a;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: "Sora", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(77, 225, 178, 0.1), transparent 35%),
    radial-gradient(circle at 80% 10%, rgba(75, 192, 245, 0.12), transparent 30%),
    #0c1017;
  color: var(--text);
  line-height: 1.6;
}

.layout {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 64px;
  z-index: 1;
}

.backdrop {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.glow {
  position: absolute;
  filter: blur(120px);
  opacity: 0.7;
  width: 460px;
  height: 460px;
  border-radius: 50%;
}

.glow-a {
  top: -120px;
  left: -80px;
  background: radial-gradient(circle, rgba(77, 225, 178, 0.25), transparent 60%);
}

.glow-b {
  bottom: -100px;
  right: -120px;
  background: radial-gradient(circle, rgba(75, 192, 245, 0.2), transparent 60%);
}

.grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 32px 32px;
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 44px);
  margin: 8px 0;
  letter-spacing: -0.02em;
}

.lede {
  margin: 0;
  color: var(--muted);
  max-width: 640px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #0b131e;
  font-weight: 700;
  border: none;
  padding: 14px 18px;
  border-radius: 12px;
  cursor: pointer;
  min-width: 160px;
  box-shadow: 0 14px 40px rgba(77, 225, 178, 0.18);
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 48px rgba(75, 192, 245, 0.25);
}

.primary:active {
  transform: translateY(0);
}

.panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-outline);
  border-radius: 18px;
  padding: 18px;
  backdrop-filter: blur(12px);
  box-shadow: 0 18px 80px rgba(0, 0, 0, 0.35);
}

.panel:hover {
  background: rgba(16, 23, 38, 0.9);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.label {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
  color: var(--muted);
  margin: 0 0 2px 0;
}

.status {
  margin: 0;
  color: var(--accent-3);
  font-weight: 600;
}

.reading {
  font-family: "Chivo Mono", "Sora", system-ui, sans-serif;
  font-size: clamp(32px, 6vw, 44px);
  font-weight: 600;
  margin: 8px 0 14px;
}

.target {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--panel-outline);
}

.target-name,
.target-offset {
  margin: 0;
  font-weight: 700;
  color: var(--text);
}

.meter {
  margin-top: 16px;
}

.input-level {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.control-row {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.control-row input[type="range"] {
  accent-color: var(--accent);
}

.control-value {
  font-family: "Chivo Mono", "Sora", system-ui, sans-serif;
  font-weight: 600;
  color: var(--muted);
}

.level-bar {
  position: relative;
  height: 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  border: 1px solid var(--panel-outline);
  overflow: hidden;
}

.level-fill {
  position: absolute;
  inset: 1px auto 1px 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  width: 0%;
  transition: width 0.08s ease;
}

.level-text {
  font-family: "Chivo Mono", "Sora", system-ui, sans-serif;
  font-weight: 600;
}

.meter-track {
  position: relative;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  height: 14px;
  border: 1px solid var(--panel-outline);
  overflow: hidden;
}

.indicator {
  position: absolute;
  top: 1px;
  bottom: 1px;
  width: 14px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  border-radius: 10px;
  transform: translateX(-50%);
  left: 50%;
  transition: left 0.3s cubic-bezier(0.25, 0.8, 0.4, 1);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 6px 20px rgba(77, 225, 178, 0.24);
}

.marker {
  position: absolute;
  width: 10px;
  top: 3px;
  bottom: 3px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.18);
}

.marker-flat {
  left: 18%;
}

.marker-sharp {
  right: 18%;
}

.meter-labels {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
  padding: 0 4px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  border: 1px solid var(--panel-outline);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.chip[data-active="true"] {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(77, 225, 178, 0.12);
  transform: translateY(-1px);
}

.chip:hover {
  border-color: var(--accent-2);
}

.helper {
  color: var(--muted);
  margin: 4px 0 12px;
  font-size: 14px;
}

.strings {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.string-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--panel-outline);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.string-row[data-active="true"] {
  border-color: var(--accent);
  background: rgba(77, 225, 178, 0.08);
}

.string-name {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-weight: 700;
}

.string-name span:last-child {
  color: var(--muted);
  font-size: 13px;
}

.string-meta {
  color: var(--muted);
  font-size: 14px;
}

.offset {
  font-weight: 700;
}

.offset[data-tone="sharp"] {
  color: var(--accent-2);
}

.offset[data-tone="flat"] {
  color: var(--danger);
}

.footnote {
  margin-top: 28px;
  color: var(--muted);
  font-size: 14px;
  border-top: 1px solid var(--panel-outline);
  padding-top: 14px;
}

@media (max-width: 720px) {
  .hero {
    flex-direction: column;
  }

  .primary {
    width: 100%;
  }

  .panels {
    grid-template-columns: 1fr;
  }

  .target {
    grid-template-columns: 1fr;
  }
}