.tts-player-flat {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 12px 16px;
    max-width: 400px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.tts-controls-group {
    display: flex;
    gap: 8px;
    align-items: center;
}
.btn-flat {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, opacity 0.2s ease;
}
.btn-flat-play { background-color: #0d6efd; color: #fff; }
.btn-flat-pause { background-color: #ffc107; color: #000; }
.btn-flat-stop { background-color: #dc3545; color: #fff; }
.btn-flat:hover:not(:disabled) { opacity: 0.9; }
.btn-flat:disabled { background-color: #e0e0e0; color: #a0a0a0; cursor: not-allowed; }

/* Barra de Progresso */
.tts-progress-wrapper {
    width: 100%;
    background-color: #e9ecef;
    border-radius: 4px;
    height: 6px;
    overflow: hidden;
}
.tts-progress-bar {
    width: 0%;
    height: 100%;
    background-color: #0d6efd;
    transition: width 0.2s ease;
}