/* 
   Articulos
*/
    .tts-controls {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 1rem;
        padding: 1rem 1.5rem;
        margin-bottom: 2rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
        box-shadow: var(--shadow-sm);
    }
    .tts-info {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        color: var(--text-muted);
        font-size: 0.9rem;
    }
    .tts-info i {
        color: var(--primary);
        font-size: 1.2rem;
    }
    .tts-buttons {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    .tts-btn {
        background: var(--bg-body);
        border: 1px solid var(--border-color);
        color: var(--text-main);
        width: 40px;
        height: 40px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.2s;
    }
    .tts-btn:hover {
        background: var(--primary);
        color: white;
        border-color: var(--primary);
    }
    .tts-btn.active {
        background: var(--primary);
        color: white;
    }
    .reading-highlight {
        background-color: rgba(99, 102, 241, 0.15) !important;
        border-left: 4px solid var(--primary) !important;
        border-radius: 2px !important;
        padding-left: 10px !important;
        color: inherit !important;
        box-shadow: none !important;
        display: block !important;
        transition: all 0.3s ease !important;
    }
    .tts-speed-select {
        width: auto;
        height: 40px;
        border-radius: 20px;
        padding: 0 1rem;
        font-size: 0.85rem;
        background-color: var(--bg-card);
        color: var(--text-primary);
        border: 1px solid var(--border-color);
        cursor: pointer;
        outline: none;
        color-scheme: light dark;
    }
    [data-theme="dark"] .tts-speed-select {
        background-color: var(--bg-dark-secondary);
        color-scheme: dark;
    }
    .tts-speed-select:focus {
        border-color: var(--primary);
    }

    @media (max-width: 768px) {
        .tts-controls {
            flex-direction: column;
            text-align: center;
            gap: 1rem;
            padding: 1.25rem;
        }
        .tts-info {
            flex-direction: column;
            justify-content: center;
            gap: 0.5rem;
        }
        .tts-buttons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.6rem;
            width: 100%;
        }
        /* Selectores ocupan todo el ancho */
        .tts-buttons .tts-speed-select {
            width: 100%;
            min-width: 0;
            font-size: 0.8rem;
            padding: 0 0.75rem;
        }
        /* Botones play/stop se centran juntos */
        .tts-buttons .tts-btn {
            grid-column: span 1;
            justify-self: center;
        }
    }