.what-is {
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background-color: var(--bg-color);
}

.what-is-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 0;
}

.what-is-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* filter: grayscale(100%) contrast(110%); Removed as per request */
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity 0.1s ease;
}

/* Default (Dark Theme) */
.what-is-img-dark {
    opacity: 1;
}

.what-is-img-light {
    opacity: 0;
}

/* Light Theme */
[data-theme="light"] .what-is-img-dark {
    opacity: 0;
}

[data-theme="light"] .what-is-img-light {
    opacity: 1;
}

.what-is-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, var(--bg-color) 10%, transparent 60%);
}

.what-is-grid {
    display: grid;
    grid-template-columns: 1fr;
    position: relative;
    z-index: 1;
}

.what-is-content {
    max-width: 700px;
}

.what-is .section-title {
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    align-items: flex-start;
}

.feature-item:last-child {
    border-bottom: none;
}

.feature-icon {
    font-family: serif;
    font-size: 1.5rem;
    color: var(--accent-color);
    opacity: 0.7;
    margin-top: 0.2rem;
}

.feature-text h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 300;
}

.feature-text p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .what-is {
        min-height: auto;
        padding: 4rem 0;
        display: flex;
        /* Restore flex */
        align-items: center;
    }

    .what-is-bg {
        position: absolute;
        top: 0;
        right: 0;
        width: 75%;
        /* Photo takes 75% screen */
        height: 100%;
        opacity: 1;
        display: block;
        z-index: 0;
    }

    .what-is-overlay {
        display: block;
        background: linear-gradient(to right, var(--bg-color) 0%, transparent 50%);
        z-index: 1;
    }

    /* Ensure container allows full width access */
    .what-is .container {
        width: 100%;
        max-width: none;
        padding: 0 1rem;
        /* Standard mobile padding */
        position: relative;
        z-index: 1;
    }

    .what-is-grid {
        display: block;
    }

    .what-is-content {
        width: 50%;
        /* Text takes left half */
        padding-right: 1rem;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .what-is .section-title {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .features-list {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .feature-item {
        gap: 0.3rem;
        padding: 0.5rem 0 0 0;
        border-bottom: none;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        /* Match problems style */
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        background: transparent;
        /* Remove card bg */
        border-radius: 0;
    }

    .feature-item:first-child {
        border-top: none;
        /* Optional: remove for first item if desired, or keep for consistency */
        padding-top: 0;
    }

    .feature-icon {
        font-size: 1rem;
        margin-top: 0;
        color: var(--accent-color);
        opacity: 0.8;
        margin-bottom: 0.3rem;
    }

    .feature-text h3 {
        font-size: 0.9rem;
        /* Reduced size */
        margin-bottom: 0.2rem;
        line-height: 1.2;
    }

    .feature-text p {
        font-size: 0.75rem;
        /* Reduced size */
        line-height: 1.3;
    }
}