body { 
    font-family: 'Inter', sans-serif; 
    background-color: #f1f5f9; /* slate-100 */ 
}

.text-brand-gray { color: #334155; } /* slate-700 */
.text-brand-green { color: #059669; } /* emerald-600 */
.bg-brand-green { background-color: #059669; }
.border-brand-green { border-color: #059669; }
.accent-brand-amber { accent-color: #f59e0b; } /* amber-500 */

.section-title { 
    font-weight: 800; 
    font-size: 2.25rem; 
    line-height: 2.5rem; 
    letter-spacing: -0.025em; 
    color: #1e293b; /* slate-800 */ 
}

.nav-link.active { 
    color: #059669; 
    font-weight: 600; 
    border-bottom: 2px solid #059669; 
}

.nav-link { 
    transition: all 0.2s; 
    border-bottom: 2px solid transparent; 
}

.chart-container { 
    position: relative; 
    width: 100%; 
    max-width: 800px; 
    margin-left: auto; 
    margin-right: auto; 
    height: 350px; 
    max-height: 500px; 
}

@media (min-width: 768px) { 
    .chart-container { height: 450px; } 
}

/* Module Tabs */
.tab { 
    cursor: pointer; 
    padding: 0.75rem 1.5rem; 
    border-bottom: 3px solid transparent; 
    transition: all 0.3s; 
}

.tab.active { 
    color: #059669; 
    border-color: #059669; 
    font-weight: 600; 
}

.tab-content { 
    display: none; 
}

.tab-content.active { 
    display: block; 
}
        
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Estilos para el Botón de Audio Flotante */
.audio-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: #059669; /* emerald-600 */
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
}

.audio-button:hover {
    background-color: #047857; /* emerald-700 */
    transform: scale(1.1);
}

.audio-button svg {
    width: 28px;
    height: 28px;
}