* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #1a1a1a;
    --white: #ffffff;
    --gray: #666666;
    --light-gray: #f5f5f5;
    --border: #e0e0e0;
    --hover: #333333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--black);
    background-color: var(--white);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Header Styles */
header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 30px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 20px;
    text-align: center;
}

.main-nav {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.filter-btn {
    background: none;
    border: none;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gray);
    cursor: pointer;
    padding: 8px 0;
    transition: color 0.3s ease;
    position: relative;
}

.filter-btn:hover {
    color: var(--black);
}

.filter-btn.active {
    color: var(--black);
}

.filter-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--black);
}

/* Gallery Grid */
main {
    padding: 60px 0;
    min-height: calc(100vh - 300px);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.gallery-item {
    cursor: pointer;
    transition: transform 0.3s ease;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-item.hidden {
    display: none;
}

.gallery-item-image {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: contain;
    background-color: var(--light-gray);
    border: 1px solid var(--border);
}

.gallery-item-info {
    padding: 20px 0;
}

.gallery-item-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--black);
}

.gallery-item-category {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--gray);
    margin-bottom: 8px;
}

.gallery-item-price {
    font-size: 18px;
    font-weight: 500;
    color: var(--black);
}

/* Footer */
footer {
    background-color: var(--light-gray);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border);
    margin-top: 80px;
}

footer p {
    color: var(--gray);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .container {
        padding: 0 30px;
    }
}

@media (max-width: 640px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .container {
        padding: 0 20px;
    }

    .logo {
        font-size: 20px;
    }

    .main-nav {
        gap: 15px;
    }

    .filter-btn {
        font-size: 12px;
    }

    main {
        padding: 40px 0;
    }
}