/* ZeroFee Tools - Text to Speech */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: #f8fafc; color: #1e293b; line-height: 1.6; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }

.site-header { background: linear-gradient(135deg, #1d4ed8, #7c3aed); color: #fff; padding: 40px 0 32px; }
.crumb { color: #dbeafe; text-decoration: none; font-size: .9rem; }
.crumb:hover { text-decoration: underline; }
.site-header h1 { font-size: 2rem; margin: 8px 0 4px; }
.site-header .sub { opacity: .92; }
.badges { margin-top: 12px; display: flex; gap: 8px; flex-wrap: wrap; }
.badge { background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.4); padding: 6px 12px; border-radius: 999px; font-size: .82rem; font-weight: 600; }

main.wrap { padding-top: 28px; padding-bottom: 40px; }
.card { background: #fff; border-radius: 14px; padding: 24px; margin-bottom: 20px; box-shadow: 0 2px 16px rgba(15,23,42,.06); }
.card h2 { font-size: 1.2rem; margin-bottom: 14px; }
.small-note { font-size: .8rem; color: #64748b; font-weight: 400; }
.note { margin-top: 12px; font-size: .88rem; color: #64748b; }
.error { margin-top: 12px; background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; padding: 10px 14px; border-radius: 10px; font-size: .9rem; }

textarea { width: 100%; border: 2px solid #e2e8f0; border-radius: 12px; padding: 14px 16px; font-size: 1rem; font-family: inherit; resize: vertical; background: #fbfdff; color: #1e293b; }
textarea:focus { outline: none; border-color: #1d4ed8; }
.text-meta { display: flex; align-items: center; gap: 12px; margin-top: 8px; font-size: .85rem; color: #64748b; flex-wrap: wrap; }
.link-btn { background: none; border: none; color: #1d4ed8; cursor: pointer; font-size: .85rem; font-weight: 600; padding: 0; }
.link-btn:hover { text-decoration: underline; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.field { font-size: .88rem; color: #64748b; font-weight: 600; }
.field select, .field input[type="range"] { display: block; margin-top: 8px; width: 100%; }
.field select { padding: 10px 12px; border: 2px solid #e2e8f0; border-radius: 10px; font-size: .95rem; background: #fff; color: #1e293b; }
.field strong { color: #1d4ed8; }
.sliders .field { margin-bottom: 10px; }
input[type="range"] { accent-color: #1d4ed8; }

.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.btn { display: inline-block; text-decoration: none; border: 2px solid #e2e8f0; background: #fff; border-radius: 10px; padding: 12px 18px; font-size: .95rem; font-weight: 700; cursor: pointer; color: #334155; }
.btn:hover { border-color: #1d4ed8; color: #1d4ed8; }
.btn.primary { background: #1d4ed8; border-color: #1d4ed8; color: #fff; }
.btn.primary:hover { background: #1e40af; color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.disclosure { background: #fffbeb; border: 1px solid #fde68a; border-radius: 10px; padding: 12px 16px; font-size: .9rem; color: #78350f; margin-bottom: 16px; }

.progress { margin-top: 16px; }
.progress .bar { height: 10px; background: #e2e8f0; border-radius: 999px; overflow: hidden; }
.progress .fill { height: 100%; width: 0%; background: linear-gradient(90deg, #1d4ed8, #7c3aed); transition: width .2s; }
.progress p { margin-top: 8px; font-size: .88rem; color: #64748b; }
#audioPreview { width: 100%; margin-top: 14px; }

/* FAQ */
.faq { border-bottom: 1px solid #f1f5f9; padding: 12px 0; }
.faq summary { font-weight: 700; cursor: pointer; }
.faq p { margin-top: 8px; color: #475569; font-size: .94rem; }

.site-footer { text-align: center; padding: 24px 0 36px; color: #94a3b8; font-size: .85rem; }

@media (max-width: 640px) {
  .site-header h1 { font-size: 1.5rem; }
  .grid2 { grid-template-columns: 1fr; }
}