/* BK Proje Vitrini — galeri + video vaka analizi bölümü */

.bk-pv-section {
    padding: var(--section-padding-lg, 5rem 0);
    background-color: var(--bg-light, #f9fafb);
}

.bk-pv-project-subtitle {
    font-weight: 600;
    color: var(--primary-color, #6366f1);
    margin-top: 0.5rem;
}

.bk-pv-section .section-description {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-light, #6b7280);
}

/* Galeri */
.bk-pv-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm, 1rem);
    margin-top: var(--spacing-2xl, 3rem);
}

.bk-pv-gallery-item {
    padding: 0;
    border: none;
    background: none;
    cursor: zoom-in;
    border-radius: var(--radius-md, 16px);
    overflow: hidden;
    aspect-ratio: 1 / 1;
    box-shadow: var(--shadow, 0 1px 3px 0 rgba(0,0,0,.1));
    transition: var(--transition-fast, all .15s ease);
}

.bk-pv-gallery-item:hover,
.bk-pv-gallery-item:focus-visible {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg, 0 10px 15px -3px rgba(0,0,0,.1));
    outline: none;
}

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

/* Video */
.bk-pv-video {
    max-width: 860px;
    margin: var(--spacing-3xl, 4rem) auto 0;
}

.bk-pv-video-facade {
    position: relative;
    aspect-ratio: 16 / 9;
    background-color: #000;
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-lg, 20px);
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-xl, 0 20px 25px -5px rgba(0,0,0,.1));
}

.bk-pv-video-facade::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.25);
    transition: background 0.2s ease;
}

.bk-pv-video-facade:hover::after {
    background: rgba(0, 0, 0, 0.35);
}

.bk-pv-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--primary-color, #6366f1);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    transition: var(--transition-fast, all .15s ease);
}

.bk-pv-video-facade:hover .bk-pv-play-btn {
    background: var(--primary-dark, #4f46e5);
    transform: translate(-50%, -50%) scale(1.08);
}

.bk-pv-video iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
    border-radius: var(--radius-lg, 20px);
    display: block;
}

/* Lightbox */
.bk-pv-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(17, 24, 39, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
}

.bk-pv-lightbox[hidden] {
    display: none;
}

.bk-pv-lightbox-img {
    max-width: min(90vw, 900px);
    max-height: 85vh;
    border-radius: var(--radius-sm, 12px);
    box-shadow: var(--shadow-2xl, 0 25px 50px -12px rgba(0,0,0,.25));
}

.bk-pv-lightbox-close,
.bk-pv-lightbox-prev,
.bk-pv-lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease;
}

.bk-pv-lightbox-close:hover,
.bk-pv-lightbox-prev:hover,
.bk-pv-lightbox-next:hover {
    background: rgba(255, 255, 255, 0.25);
}

.bk-pv-lightbox-close {
    top: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
    font-size: 1.75rem;
    line-height: 1;
}

.bk-pv-lightbox-prev,
.bk-pv-lightbox-next {
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    font-size: 1.1rem;
}

.bk-pv-lightbox-prev {
    left: 1rem;
}

.bk-pv-lightbox-next {
    right: 1rem;
}

@media (max-width: 640px) {
    .bk-pv-gallery {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 0.6rem;
    }

    .bk-pv-play-btn {
        width: 56px;
        height: 56px;
    }

    .bk-pv-lightbox-prev,
    .bk-pv-lightbox-next {
        width: 40px;
        height: 40px;
    }
}