/* bk-tts.min.css (with responsive support) */
.bk-tts-container{background:#f6fff8;border:2px solid #88b892;border-radius:16px;padding:24px;max-width:520px;margin:24px auto;box-shadow:0 6px 12px rgba(0,0,0,0.08);font-family:'Nunito',sans-serif;transition:transform .2s ease;position:relative}.bk-tts-container:hover{transform:translateY(-2px)}.bk-tts-container label{display:block;margin-top:12px;font-size:1.1em;font-weight:600;color:#333}.bk-tts-container textarea{width:100%;padding:12px;border:2px solid #88b892;border-radius:10px;font-size:1em;background:#fff;margin-top:8px;resize:none;box-shadow:inset 0 2px 4px rgba(0,0,0,0.05)}.bk-tts-container textarea:focus{outline:none;border-color:#22a39f;box-shadow:0 0 0 2px rgba(34,163,159,0.2)}.bk-tts-container select,.bk-tts-container input[type=range]{margin-top:8px;width:100%;padding:6px;border-radius:8px;border:1px solid #ccc;font-size:1em}.bk-tts-container button{display:inline-block;background:#22a39f;color:#fff;border:none;padding:10px 24px;font-size:1em;border-radius:10px;cursor:pointer;margin-top:14px;transition:background .3s ease,transform .2s ease;font-weight:600}.bk-tts-container button:hover{background:#1b7c7a;transform:scale(1.05)}.bk-tts-container #bk-tts-output{margin-top:16px;font-weight:bold;font-size:1.2em;color:#2d2d2d;animation:fadeInUp .4s ease-out}#bk-tts-audio{display:block;margin-top:12px;width:100%}.bk-tts-loading{color:#0073aa;font-weight:bold}.bk-tts-error{color:#d63638;font-weight:bold}.bk-tts-warning{color:#ff9900;font-weight:bold}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media screen and (max-width: 480px){.bk-tts-container{padding:16px;margin:16px;font-size:0.95em}.bk-tts-container button{width:100%;margin-top:16px}.bk-tts-container textarea{font-size:1em}.bk-tts-container select,.bk-tts-container input[type=range]{font-size:1em}}