.benefits-hero {
    background: var(--bg-gradient);
    padding: calc(var(--spacing-3xl) * 2) 0;
    color: var(--bg-secondary2);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.benefits-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    z-index: var(--z-normal);
}

.benefits-hero .container {
    position: relative;
    z-index: var(--z-dropdown);
}

.benefits-hero h1 {
    font-size: var(--font-size-4xl);
    font-family: var(--font-primary);
    margin-bottom: var(--spacing-lg);
    color: var(--bg-secondary2);
    line-height: var(--line-height-tight);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    max-width: var(--container-md);
    margin: 0 auto var(--spacing-xl);
    color: var(--bg-secondary2);
    line-height: var(--line-height-loose);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.hero-cta .primary-btn {
    background: var(--text-white);
    color: var(--primary-color);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border-radius: var(--btn-border-radius);
    font-weight: var(--btn-font-weight);
    transition: var(--transition-base);
    border: 2px solid var(--text-white);
}

.hero-cta .primary-btn:hover {
    background: transparent;
    color: var(--bg-secondary2);
    transform: translateY(-2px);
}

.hero-cta .secondary-btn {
    background: transparent;
    color: var(--bg-secondary2);
    border: 2px solid var(--text-white);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border-radius: var(--btn-border-radius);
    font-weight: var(--btn-font-weight);
    transition: var(--transition-base);
}

.hero-cta .secondary-btn:hover {
    background: var(--text-white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Benefits Grid Section */
.benefits-grid-section {
    padding: calc(var(--spacing-3xl) * 1.5) 0;
    background: var(--bg-light);
    position: relative;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--grid-gap);
    padding: var(--spacing-md);
    max-width: var(--container-xl);
    margin: 0 auto;
}

.benefit-card {
    background: var(--bg-primary);
    border-radius: var(--card-border-radius);
    padding: var(--card-padding);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border: 1px solid var(--border-color-light);
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--bg-gradient);
    opacity: 0;
    transition: var(--transition-base);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.benefit-card:hover::before {
    opacity: 1;
}

.benefit-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    /* background: var(--bg-gradient); */
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    /* color: var(--text-white); */
    /* box-shadow: var(--shadow-md); */
}

.benefit-icon i {
    /* font-size: var(--font-size-2xl); */
}

.benefit-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xl);
    font-weight: var(--btn-font-weight);
    line-height: var(--line-height-tight);
}

.benefit-card p {
    color: var(--text-secondary);
    line-height: var(--line-height-base);
    margin: 0;
    font-size: var(--font-size-base);
}

/* Dark Mode Specific Styles */
@media (prefers-color-scheme: dark) {
    .benefit-card {
        background: var(--bg-secondary);
    }

    .benefit-card h3 {
        color: var(--bg-secondary2);
    }

    .benefit-card p {
        color: var(--text-light);
    }

    .benefit-icon {
        background: var(--primary-color);
    }
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .benefits-hero h1 {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
        padding: 0 var(--spacing-md);
    }

    .benefits-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        padding: var(--spacing-md);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
        padding: 0 var(--spacing-md);
    }

    .benefit-icon {
        width: 60px;
        height: 60px;
    }
}

/* Animation Styles */
/* [data-aos="fade-up"] {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-base);
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
} */

/* Enhanced card hover states */
.benefit-card:focus-within {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Accessibility improvements */
.benefit-card:focus-within::before {
    opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
    .benefit-card,
    .benefit-card::before,
    [data-aos="fade-up"] {
        transition: none;
    }
}
/* Science Section Styles */
.science-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(to bottom, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    overflow: hidden;
}

.science-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.science-text {
    padding: var(--spacing-xl);
}

.science-text h3 {
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.science-text h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: var(--border-radius-full);
}

.science-text p {
    color: var(--text-secondary);
    line-height: var(--line-height-loose);
    font-size: var(--font-size-lg);
}

.science-visual {
    position: relative;
    height: 400px;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.ph-scale {
    position: absolute;
    width: 80%;
    height: 80%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(to bottom, 
        #ff4444 0%,    /* Acidic */
        #ffd700 50%,   /* Neutral */
        #44ff44 100%   /* Alkaline */
    );
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
}

.ph-marker {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-white);
}

/* Testimonials Section Styles */
.testimonials-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.testimonials-slider {
    max-width: var(--container-lg);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
}

.testimonial-slide {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.testimonial-slide:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.testimonial-content {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.testimonial-image {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-color);
}

.testimonial-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-text {
    flex-grow: 1;
}

.testimonial-text p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-loose);
    font-style: italic;
}

.testimonial-rating {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.testimonial-rating i {
    color: var(--warning-color);
}

.testimonial-text h4 {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
}

.testimonial-text span {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Slider Navigation */
.slider-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: var(--transition-base);
}

.slider-dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* Responsive Adjustments */
@media (max-width: 991px) {
    .science-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .science-visual {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .testimonial-content {
        flex-direction: column;
        text-align: center;
    }

    .testimonial-rating {
        justify-content: center;
    }

    .testimonial-slide {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 576px) {
    .science-text {
        padding: var(--spacing-md);
    }

    .science-text h3 {
        font-size: var(--font-size-xl);
    }

    .science-text p {
        font-size: var(--font-size-base);
    }

    .testimonial-image {
        width: 100px;
        height: 100px;
    }
}

/* Dark Mode Styles */
@media (prefers-color-scheme: dark) {
    .science-section {
        background: linear-gradient(to bottom, var(--bg-dark) 0%, var(--bg-secondary) 100%);
    }

    .testimonial-slide {
        background: var(--bg-dark);
    }

    .science-visual {
        background: var(--bg-dark);
    }
}