:root {
    --qc-primary: #3a75ff;
    --qc-bg: #0f0f10;
    --qc-text: #e9eefc;
    --qc-muted: rgba(233,238,252,.7);
    --qc-radius: 10px;
    --qc-shadow: 0 6px 22px rgba(0,0,0,0.6);
    --qc-gap: 12px;
    --qc-thumb-size: 84px;
}

@font-face {
    font-family: 'iransans-web';
    src: url('../fonts/iransans-web.eot') format('embedded-opentype'), url('../fonts/iransans-web.ttf') format('truetype'), url('../fonts/iransans-web.woff') format('woff'), url('../fonts/iransans-web.woff2') format('woff2');
}
/* container basics */
.qc-gallery {
    max-width: 1200px;
    margin: 0 auto;
    color: var(--qc-text);
    font-family: iransans-web, Tahoma;
}

/* Viewer */
.qc-viewer {
    position: relative;
    background: linear-gradient(180deg, rgba(0,0,0,.4), rgba(0,0,0,.6));
    border-radius: var(--qc-radius);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 520px;
    box-shadow: var(--qc-shadow);
    margin-bottom: var(--qc-gap);
}

/* Main image region */
.qc-image-wrap {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    /*position: relative;*/
    padding: 80px;
    box-sizing: border-box;
}

    .qc-image-wrap img {
        max-width: 100%;
        max-height: calc(100vh - 260px);
        object-fit: contain;
        border-radius: 6px;
        background: #0b0b0c;
        box-shadow: 0 8px 24px rgba(0,0,0,0.6);
    }

/* caption */
.qc-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 12px 20px;
    backdrop-filter: blur(4px);
    background: linear-gradient(180deg, rgba(0,0,0,0), rgba(0,0,0,0.55));
    color: var(--qc-muted);
    font-size: 13px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.qc-title {
    font-weight: 600;
    color: var(--qc-text);
    font-size: 15px;
}

.qc-desc {
    max-width: 880px;
    text-align: center;
}

/* Prev/next buttons */
.qc-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.06);
    border: none;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--qc-text);
    transition: transform .18s ease, background .15s ease;
    box-shadow: 0 4px 14px rgba(0,0,0,.5);
}

    .qc-btn:hover {
        transform: translateY(-50%) scale(1.04);
        background: rgba(58,117,255,0.12);
    }

    .qc-btn:active {
        transform: translateY(-50%) scale(.98);
    }

.qc-btn-left {
    left: 18px;
    z-index: 1;
}

.qc-btn-right {
    right: 18px;
    z-index: 1;
}

/* fullscreen button */
.qc-fullscreen {
    position: absolute;
    right: 18px;
    top: 16px;
    background: rgba(0,0,0,0.35);
    border: 1px solid rgba(255,255,255,0.04);
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    color: var(--qc-muted);
}

/* thumbnails area */
.qc-thumbs-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
}

.qc-thumb-nav {
    background: var(--qc-primary);
    border: none;
    color: white;
    height: 40px;
    width: 42px;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(58, 117, 255, 0.48);
}

.qc-thumbs {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 8px;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
    flex: 1 1 auto;
    align-items: center;
    flex-direction: row-reverse;
}

    .qc-thumbs::-webkit-scrollbar {
        height: 10px;
    }

    .qc-thumbs::-webkit-scrollbar-thumb {
        background: rgba(0,0,0,0.3);
        border-radius: 8px;
    }

.qc-thumb {
    flex: 0 0 auto;
    width: var(--qc-thumb-size);
    height: var(--qc-thumb-size);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    box-shadow: 0 6px 18px rgba(0,0,0,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.06));
}

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

    /* active thumb */
    .qc-thumb.active {
        border-color: var(--qc-primary);
        transform: translateY(-4px);
        box-shadow: 0 12px 30px rgba(58,117,255,0.18);
    }

/* responsiveness */
@media (max-width:900px) {
    :root {
        --qc-thumb-size: 72px;
    }

    .qc-viewer {
        min-height: 420px;
    }
}

@media (max-width:600px) {
    .qc-viewer {
        min-height: 340px;
    }

    .qc-caption {
        font-size: 10px;
    }
}

/* focus outline for accessibility */
.qc-viewer:focus {
    outline: 3px solid rgba(58,117,255,0.18);
    outline-offset: 6px;
    border-radius: var(--qc-radius);
}

.qc-thumb:focus {
    outline: 3px solid rgba(58,117,255,0.12);
    outline-offset: 3px;
    border-radius: 8px;
}

/* subtle transition */
.qc-image-wrap img {
    transition: opacity .28s ease, transform .28s ease;
}