.convert-intro {
  padding: 56px 0 8px;
  text-align: center;
  background: radial-gradient(circle at 50% 0%, var(--lighter-background), var(--background) 70%);
}

.convert-intro h1 {
  color: var(--foreground);
  font-size: 2rem;
  margin-bottom: 8px;
}

.convert-intro .tagline {
  color: var(--light-foreground);
  font-size: 0.95rem;
}

.convert-panel {
  padding: 40px 0 80px;
}

.drop-zone {
  max-width: 700px;
  margin: 0 auto;
  border: 2px dashed var(--muted);
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  color: var(--light-foreground);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.drop-zone:hover,
.drop-zone:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.drop-zone.is-dragover {
  border-color: var(--accent);
  background: var(--lighter-background);
}

.drop-hint {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.75rem;
}

.convert-status {
  max-width: 700px;
  margin: 20px auto 0;
  text-align: center;
  color: var(--light-foreground);
  font-size: 0.9rem;
}

.convert-editor {
  max-width: 700px;
  margin: 24px auto 0;
  text-align: center;
}

#source-preview {
  display: block;
  max-width: 100%;
  max-height: 360px;
  margin: 0 auto;
  border: 1px solid var(--muted);
  border-radius: 8px;
  background: var(--dark-background);
}

.source-info {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.8rem;
}

.format-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 20px;
}

.format-row label {
  color: var(--light-foreground);
  font-size: 0.85rem;
}

.format-row select {
  background: var(--dark-background);
  color: var(--foreground);
  border: 1px solid var(--muted);
  border-radius: 8px;
  padding: 8px 10px;
  font-family: inherit;
  font-size: 0.85rem;
}

.quality-field {
  display: flex;
  align-items: center;
  gap: 8px;
}

.quality-field input[type="range"] {
  width: 140px;
  accent-color: var(--accent);
}

#quality-value {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  min-width: 36px;
}

#convert-btn {
  display: block;
  margin: 20px auto 0;
  background: var(--accent);
  color: var(--dark-background);
  border: none;
  border-radius: 999px;
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease;
}

#convert-btn:hover:not(:disabled) {
  transform: scale(1.05);
}

#convert-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.convert-result {
  max-width: 700px;
  margin: 24px auto 0;
  background: var(--lighter-background);
  border: 1px solid var(--muted);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.result-info {
  color: var(--foreground);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

#result-preview {
  display: block;
  max-width: 100%;
  max-height: 360px;
  margin: 0 auto 16px;
  border-radius: 8px;
}

.download-btn {
  display: inline-block;
  background: var(--accent);
  color: var(--dark-background);
  border-radius: 999px;
  padding: 10px 28px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s ease;
}

.download-btn:hover {
  transform: scale(1.05);
  color: var(--dark-background);
}

.convert-note {
  max-width: 700px;
  margin: 24px auto 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.5;
}