/* Certificate Lightbox Gallery */
.certificate-lightbox {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.certificate-lightbox.active {
    display: flex !important;
}

.certificate-lightbox::before {
    content: '';
    position: absolute;
    inset: -15%;
    background:
        radial-gradient(circle at 16% 18%, rgba(211, 164, 90, 0.2), transparent 28%),
        radial-gradient(circle at 82% 14%, rgba(123, 196, 163, 0.18), transparent 24%),
        radial-gradient(circle at 50% 100%, rgba(255, 255, 255, 0.06), transparent 30%);
    filter: blur(20px);
    pointer-events: none;
}

.certificate-lightbox .lightbox-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(145deg, rgba(4, 11, 9, 0.94) 0%, rgba(10, 25, 21, 0.9) 50%, rgba(6, 14, 12, 0.96) 100%);
    backdrop-filter: blur(18px);
}

.certificate-lightbox .lightbox-content {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(28px, 4vw, 44px) clamp(86px, 8vw, 124px);
}

.certificate-lightbox .lightbox-image-container {
    position: relative;
    max-width: min(86vw, 1180px);
    max-height: calc(100vh - 122px);
    padding: clamp(12px, 1.5vw, 18px);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 30px;
    background:
        linear-gradient(155deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow:
        0 32px 90px rgba(0, 0, 0, 0.48),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(22px);
}

.certificate-lightbox .lightbox-image-container::before {
    content: '';
    position: absolute;
    inset: 12px;
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    pointer-events: none;
}

.certificate-lightbox .lightbox-image {
    display: block !important;
    max-width: min(80vw, 1080px);
    max-height: calc(100vh - 170px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 20px;
    background: linear-gradient(180deg, #ffffff, #f4f6f7);
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.26),
        0 1px 0 rgba(255, 255, 255, 0.75) inset;
    pointer-events: auto !important;
    opacity: 1 !important;
    visibility: visible !important;
    transition: filter 0.22s ease, opacity 0.22s ease;
}

.certificate-lightbox .lightbox-image.is-loading {
    filter: blur(2px);
    opacity: 0.88 !important;
}

/* Lightbox Controls */
.certificate-lightbox .lightbox-close,
.certificate-lightbox .lightbox-prev,
.certificate-lightbox .lightbox-next {
    position: absolute;
    display: grid;
    place-items: center;
    width: 62px;
    height: 62px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
    cursor: pointer;
    font-weight: 500;
    line-height: 1;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.24);
    backdrop-filter: blur(18px);
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    z-index: 2;
}

.certificate-lightbox .lightbox-close:hover,
.certificate-lightbox .lightbox-prev:hover,
.certificate-lightbox .lightbox-next:hover {
    transform: translateY(-2px) scale(1.03);
    background: rgba(211, 164, 90, 0.95);
    border-color: rgba(211, 164, 90, 0.95);
    box-shadow: 0 20px 44px rgba(0, 0, 0, 0.28);
}

.certificate-lightbox .lightbox-close {
    top: clamp(18px, 3vw, 28px);
    right: clamp(18px, 3vw, 28px);
    font-size: 2.3rem;
}

.certificate-lightbox .lightbox-prev,
.certificate-lightbox .lightbox-next {
    top: 50%;
    transform: translateY(-50%);
    font-size: 2rem;
}

.certificate-lightbox .lightbox-prev {
    left: clamp(18px, 3vw, 32px);
}

.certificate-lightbox .lightbox-next {
    right: clamp(18px, 3vw, 32px);
}

.certificate-lightbox .lightbox-prev:hover,
.certificate-lightbox .lightbox-next:hover {
    transform: translateY(-50%) scale(1.03);
}

/* Counter */
.certificate-lightbox .lightbox-counter {
    position: absolute;
    left: 50%;
    bottom: clamp(18px, 3vw, 30px);
    transform: translateX(-50%);
    min-width: 106px;
    text-align: center;
    padding: 12px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.22);
    backdrop-filter: blur(18px);
    z-index: 2;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .certificate-lightbox .lightbox-content {
        padding: 18px 16px 96px;
    }

    .certificate-lightbox .lightbox-image-container {
        max-width: 100%;
        max-height: calc(100vh - 170px);
        padding: 10px;
        border-radius: 24px;
    }

    .certificate-lightbox .lightbox-image-container::before {
        inset: 10px;
        border-radius: 18px;
    }

    .certificate-lightbox .lightbox-image {
        max-width: calc(100vw - 52px);
        max-height: calc(100vh - 210px);
        border-radius: 16px;
    }

    .certificate-lightbox .lightbox-close,
    .certificate-lightbox .lightbox-prev,
    .certificate-lightbox .lightbox-next {
        width: 48px;
        height: 48px;
    }

    .certificate-lightbox .lightbox-close {
        top: 14px;
        right: 14px;
        font-size: 1.9rem;
    }

    .certificate-lightbox .lightbox-prev,
    .certificate-lightbox .lightbox-next {
        top: auto;
        bottom: 22px;
        transform: none;
        font-size: 1.55rem;
    }

    .certificate-lightbox .lightbox-prev {
        left: 16px;
    }

    .certificate-lightbox .lightbox-next {
        right: 16px;
    }

    .certificate-lightbox .lightbox-prev:hover,
    .certificate-lightbox .lightbox-next:hover {
        transform: translateY(-2px) scale(1.03);
    }

    .certificate-lightbox .lightbox-counter {
        bottom: 22px;
        padding: 10px 16px;
        font-size: 0.88rem;
    }
}

@media (max-width: 480px) {
    .certificate-lightbox .lightbox-content {
        padding: 14px 12px 90px;
    }

    .certificate-lightbox .lightbox-image {
        max-width: calc(100vw - 36px);
        max-height: calc(100vh - 196px);
    }

    .certificate-lightbox .lightbox-close,
    .certificate-lightbox .lightbox-prev,
    .certificate-lightbox .lightbox-next {
        width: 44px;
        height: 44px;
    }

    .certificate-lightbox .lightbox-prev {
        left: 12px;
    }

    .certificate-lightbox .lightbox-next {
        right: 12px;
    }
}