:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0d1117;
  color: #f0f6fc;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, #22324d 0, #0d1117 36rem);
}

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

.hero {
  margin-bottom: 24px;
}

.eyebrow {
  color: #7ee787;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  line-height: 1.02;
}

.subtitle {
  color: #c9d1d9;
  font-size: 1.1rem;
  max-width: 680px;
}

.card {
  display: grid;
  gap: 16px;
  padding: 24px;
  border: 1px solid #30363d;
  border-radius: 24px;
  background: rgba(13, 17, 23, 0.82);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(16px);
  margin-bottom: 24px;
}

label {
  display: grid;
  gap: 8px;
  color: #c9d1d9;
  font-weight: 700;
}

input, textarea, select {
  border: 1px solid #30363d;
  border-radius: 14px;
  background: #010409;
  color: #f0f6fc;
  padding: 12px 14px;
  font: inherit;
}

textarea {
  resize: vertical;
}

button, .download {
  border: 0;
  border-radius: 16px;
  padding: 14px 18px;
  font: inherit;
  font-weight: 800;
  color: #001b0a;
  background: linear-gradient(135deg, #7ee787, #2ea043);
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

.result audio {
  width: 100%;
}

pre {
  white-space: pre-wrap;
  line-height: 1.65;
  color: #d2a8ff;
}

.hidden {
  display: none;
}