.portfolio {
    width: 100%;
    background-color: var(--color-bg);
    padding: clamp(1.5rem, 2vw, 3rem) clamp(1rem, 2vw, 2rem);
    text-align: center;
}

.portfolio.container {
    max-width: none;
    padding: clamp(2rem, 3vw, 4rem) clamp(1.5rem, 3vw, 4rem);
}

.portfolio h2 {
    font-size: clamp(1.5rem, 2vw + 1rem, 2.5rem);
    color: var(--color-text);
    margin-bottom: 1rem;
}

.portfolio > p {
    max-width: clamp(300px, 50vw, 650px);
    margin: 0 auto 2.5rem;
    color: var(--color-text);
    font-weight: 500;
}

.portfolio-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    background-color: var(--color-primary-dark);
    border: none;
    padding: 0.5em 0.8em;
    margin: 0.5em 0.5em;
    border-radius: 5px;
    font-family: var(--font-family-base);
}

.filter-btn:hover {
    background-color: var(--color-primary);
    transform: translateY(-5px);
    transition: 0.5s ease;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.portfolio-grid {
    display: flex;
    flex-direction: column;
    gap: clamp(2rem, 2vw, 2rem);
    padding: 2em 0 0 0;
}

.portfolio-card {
    background: var(--color-primary-dark);
    border-radius: 15px;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.4);
    overflow: hidden;
    color: var(--color-text);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    transition: opacity 0.3s ease-in-out, transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.portfolio-card:hover,
.portfolio-card:focus {
    transform: translateY(-15px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.7);
    outline: none;
    background-color: var(--color-primary);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.portfolio-card .swiper {
    width: 100%;
    max-height: clamp(180px, 20vw, 280px);
    position: relative;
    user-select: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.portfolio-card .swiper-slide img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    margin: 2em 0;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    
}

.portfolio-info {
    padding: clamp(1rem, 1vw + 0.5rem, 1.5rem) clamp(0.8rem, 1vw + 0.5rem, 1rem);
    text-align: left;
}

.portfolio-info h3 {
    margin-bottom: 0.5rem;
    color: var(--color-text);
    font-weight: 600;
    font-size: clamp(1rem, 1vw + 0.5rem, 1.2rem);
}

.portfolio-info p {
    color: var(--color-text);
    font-size: clamp(0.85rem, 0.5vw + 0.5rem, 0.95rem);
    line-height: 1.4;
}

.portfolio-card .swiper-pagination-bullet {
    background: var(--color-text);
    border: 1px solid var(--color-primary);
    opacity: 0.7;
}

.portfolio-card .swiper-pagination-bullet-active {
    opacity: 1;
    background-color: var(--color-primary);
    border: 1px solid var(--color-text);
}

.portfolio-cta {
    text-align: center;
    background-color: var(--color-bg-alt);
    padding: clamp(2rem, 3vw, 4rem) clamp(1rem, 2vw, 2rem);
    border-radius: 15px;
    margin-top: clamp(2rem, 3vw, 4rem);
    margin-bottom: 4rem;
    color: var(--color-text);
}

.portfolio-cta h2 {
    font-size: clamp(1.8rem, 2vw + 1rem, 2.5rem);
    margin-bottom: 1rem;
}

.portfolio-cta p {
    max-width: clamp(300px, 50vw, 600px);
    margin: 0 auto 1.5rem;
    font-size: clamp(1rem, 1vw + 0.2rem, 1.1rem);
    color: var(--color-text);
}

.btn-cta {
    background: var(--color-primary-dark);
    color: #fff;
    padding: clamp(0.6rem, 1vw, 0.8rem) clamp(1.2rem, 2vw, 1.8rem);
    border-radius: 50px;
    font-weight: bold;
    transition: background 0.3s ease;
    display: inline-block;
    text-decoration: none;
}

.btn-cta:hover {
    background: var(--color-primary);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

@media (min-width: 768px) {
    .portfolio {
        margin-top: 0;
    }
    .portfolio-grid {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: clamp(1rem, 2vw, 2rem);
    }
    .portfolio-card {
        flex: 1 1 clamp(45%, 45%, 48%);
        max-width: clamp(400px, 40vw, 480px);
    }
    .portfolio-card .swiper {
        max-height: clamp(220px, 25vw, 250px);
    }
}

@media (min-width: 1024px) {
    .portfolio-card {
        flex: 1 1 clamp(40%, 40%, 45%);
        max-width: clamp(420px, 38vw, 460px);
    }
    .portfolio-card .swiper {
        max-height: clamp(240px, 27vw, 280px);
    }

}