:root {
  --bg: #0f1220;
  --card: rgba(255,255,255,0.08);
  --card2: rgba(255,255,255,0.12);
  --text: #f7f7fb;
  --muted: #b8bfd8;
  --accent: #7c5cff;
  --accent2: #26d7ae;
  --danger: #ffcf5c;
  --border: rgba(255,255,255,0.16);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(circle at top left, #2b1d68 0, transparent 38%),
              radial-gradient(circle at bottom right, #164f47 0, transparent 35%),
              var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.page {
  width: min(1100px, 92vw);
  margin: 0 auto;
  padding: 42px 0 60px;
}

.hero {
  text-align: center;
  margin-bottom: 26px;
}

.badge {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.09);
  color: var(--accent2);
  font-weight: 700;
  letter-spacing: .02em;
  margin-bottom: 16px;
}

h1 {
  font-size: clamp(2rem, 4vw, 4rem);
  margin: 0 0 12px;
  line-height: 1.05;
}

h2 { margin-top: 0; }

p { color: var(--muted); line-height: 1.65; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  backdrop-filter: blur(16px);
}

.warning {
  margin-bottom: 22px;
  background: rgba(255,207,92,0.12);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

label {
  display: block;
  margin: 14px 0 8px;
  font-weight: 700;
}

input[type="text"], textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.1);
  color: var(--text);
  border-radius: 14px;
  padding: 13px 14px;
  outline: none;
  font-size: 1rem;
}

textarea { resize: vertical; min-height: 190px; }

input[type="range"] { width: 100%; }

.checkrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--muted);
}

button, .download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 14px;
  padding: 13px 18px;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
  margin-top: 14px;
}

button.primary, .download {
  color: white;
  background: linear-gradient(135deg, var(--accent), #d84bff);
}

button:disabled {
  opacity: .55;
  cursor: not-allowed;
}

.hint {
  font-size: .92rem;
}

.twocol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.result {
  margin-top: 22px;
}

#audioPlayer {
  width: 100%;
  margin-top: 10px;
}

.notes {
  margin-top: 22px;
}

li { color: var(--muted); margin: 9px 0; line-height: 1.5; }
code {
  background: rgba(0,0,0,0.25);
  padding: 2px 6px;
  border-radius: 7px;
}

@media (max-width: 850px) {
  .grid, .twocol { grid-template-columns: 1fr; }
  .page { width: min(94vw, 720px); padding-top: 24px; }
}