:root {
  --bg: #0b1020;
  --card: rgba(255,255,255,.08);
  --card-border: rgba(255,255,255,.14);
  --text: #f8fafc;
  --muted: #b6c2d2;
  --accent: #4ade80;
  --danger: #fb7185;
  --button: rgba(255,255,255,.12);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #1e3a8a 0, var(--bg) 42%, #050816 100%);
}
.app {
  width: min(720px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0;
  display: grid;
  gap: 18px;
}
.card {
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 28px;
  padding: 22px;
  box-shadow: 0 20px 80px rgba(0,0,0,.28);
  backdrop-filter: blur(16px);
}
.hero { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
h1, h2, p { margin: 0; }
h1 { font-size: clamp(30px, 8vw, 56px); line-height: .95; letter-spacing: -0.05em; }
h2 { font-size: 24px; letter-spacing: -0.03em; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: .16em; font-size: 12px; font-weight: 700; margin-bottom: 8px; }
.muted { color: var(--muted); margin-top: 10px; line-height: 1.5; }
.tiny { color: var(--muted); font-size: 13px; line-height: 1.45; margin-top: 14px; }
.status { padding: 10px 14px; border: 1px solid var(--card-border); border-radius: 999px; color: var(--muted); white-space: nowrap; }
label { display: block; color: var(--muted); margin-bottom: 8px; }
.number-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
input {
  width: 100%;
  border: 1px solid var(--card-border);
  background: rgba(0,0,0,.28);
  color: var(--text);
  border-radius: 18px;
  padding: 16px 18px;
  font-size: 24px;
  outline: none;
}
button {
  border: 0;
  border-radius: 18px;
  padding: 14px 16px;
  color: var(--text);
  background: var(--button);
  font-weight: 800;
  cursor: pointer;
  transition: transform .08s ease, opacity .2s ease, background .2s ease;
}
button:active { transform: translateY(1px) scale(.99); }
button:disabled { cursor: not-allowed; opacity: .45; }
.secondary { border: 1px solid var(--card-border); }
.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0; }
.keypad button { min-height: 64px; font-size: 24px; }
.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.call { background: var(--accent); color: #052e16; }
.hangup { background: var(--danger); color: #450a0a; }
.fun-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.switch { margin: 0; }
.switch input { display: none; }
.switch span {
  display: block;
  width: 64px;
  height: 36px;
  border-radius: 999px;
  background: rgba(255,255,255,.18);
  position: relative;
  border: 1px solid var(--card-border);
}
.switch span::after {
  content: "";
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  top: 3px;
  left: 4px;
  transition: transform .2s ease;
}
.switch input:checked + span { background: var(--accent); }
.switch input:checked + span::after { transform: translateX(27px); }
.pitch-demo { margin-top: 16px; }
@media (max-width: 560px) {
  .hero, .number-row, .actions { grid-template-columns: 1fr; display: grid; }
  .status { width: fit-content; }
}
.range-label {
  display: block;
  margin-top: 1rem;
  margin-bottom: .35rem;
  font-size: .9rem;
  font-weight: 700;
}

#pitchRatio {
  width: 100%;
  accent-color: #7c3aed;
}

.soundboard select {
  width: 100%;
  border: 1px solid var(--card-border);
  background: rgba(0,0,0,.28);
  color: var(--text);
  border-radius: 18px;
  padding: 14px 16px;
  font-size: 16px;
  outline: none;
}

.soundboard select option {
  color: #111827;
}

.sound-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.sound-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

#soundVolume {
  width: 100%;
  accent-color: #38bdf8;
}

.volume-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  margin-top: 1rem;
}

.volume-head .range-label {
  margin-top: 0;
}

#soundVolumeValue {
  color: var(--accent);
  font-size: 14px;
  margin-bottom: .35rem;
}

.volume-presets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.mini {
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 13px;
}

code {
  color: var(--text);
  background: rgba(255,255,255,.12);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1px 6px;
}

@media (max-width: 560px) {
  .sound-row, .sound-actions {
    grid-template-columns: 1fr;
  }
}

.mic-controls {
  margin-top: 14px;
}

.mute-toggle {
  width: 100%;
}

.mute-toggle.is-muted {
  background: var(--danger);
  color: #450a0a;
  border-color: transparent;
}