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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #000;
}

.fullscreen-gallery {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
}

#gallery-image {
    max-width: 100%;
    max-height: 100%;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: #fff;
    z-index: 10;
    opacity: 0.6;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
}

.nav-btn.prev {
    left: 20px;
}

.nav-btn.next {
    right: 20px;
}

.nav-btn svg {
    width: 28px;
    height: 28px;
}

.bottom-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 2rem 1.5rem 1.5rem;
    text-align: center;
}

.caption {
    max-width: 800px;
    margin: 0 auto 0.75rem;
    background: rgba(0, 0, 0, 0.6);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.caption-title {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0.35rem;
}

.caption-subtitle {
    color: rgba(255, 255, 255, 0.75);
    font-size: 1rem;
    line-height: 1.5;
}

.progress {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-btn {
        width: 50px;
        height: 50px;
    }

    .nav-btn.prev {
        left: 10px;
    }

    .nav-btn.next {
        right: 10px;
    }

    .nav-btn svg {
        width: 24px;
        height: 24px;
    }
}