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

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
        Cantarell, sans-serif;
    background: #fafafa;
    color: #333;
    line-height: 1.6;
}

header {
    background: #fff;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 22px;
    font-weight: 600;
    color: #1a1a1a;
    letter-spacing: -0.5px;
}

nav {
    display: flex;
    gap: 8px;
}

nav button {
    background: none;
    border: none;
    padding: 10px 16px;
    font-size: 14px;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 4px;
    font-weight: 500;
}

nav button:hover {
    background: #f0f0f0;
    color: #000;
}

nav button.active {
    background: #1a1a1a;
    color: #fff;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.section-title {
    font-size: 32px;
    font-weight: 300;
    margin-bottom: 30px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
    max-width: 600px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 60px;
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    border-radius: 2px;
    background: #f5f5f5;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: scale(1.02);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-item .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .overlay {
    opacity: 1;
}

.overlay-text {
    color: #fff;
    font-size: 14px;
    text-align: center;
}

.home-content {
    max-width: 700px;
}

.home-content h2 {
    font-size: 28px;
    font-weight: 300;
    margin: 30px 0 20px;
    letter-spacing: -0.5px;
}

.home-content p {
    font-size: 16px;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8;
}

.image-not-found {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 12px;
    text-align: center;
    padding: 20px;
    background: #f5f5f5;
}

/* --- Lightbox / Image Zoom Styles --- */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 200; /* Higher than the sticky header */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.lightbox.active img {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff;
    font-size: 35px;
    font-weight: 200;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

.lightbox-close:hover {
    color: #ccc;
}

.active img {
    border: groove 1px #ccc;
    padding: 2px;
}