/* ================================================================
   gallery.css — گالری تصاویر با فیلتر Isotope و لایه‌بندی آجری
   ================================================================ */

/* ================================================================
   هدر صفحه گالری
   ================================================================ */
.gal-page-header {
    margin-top: 123px;
    background: linear-gradient(140deg, #071a35 0%, #0d2b55 55%, #0a3d72 100%);
    padding: 56px 0 52px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

/* حلقه‌های تزئینی */
.gal-page-header .gal-deco-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,.06);
    pointer-events: none;
}
.gal-page-header .gal-deco-circle:nth-child(1) { width:500px; height:500px; top:-200px; right:-120px; }
.gal-page-header .gal-deco-circle:nth-child(2) { width:320px; height:320px; top:-60px;  right:30px;  border-color:rgba(255,255,255,.04); }
.gal-page-header .gal-deco-circle:nth-child(3) { width:420px; height:420px; bottom:-200px; left:-100px; }
.gal-page-header .gal-deco-circle:nth-child(4) { width:200px; height:200px; bottom:-60px;  left:60px;   border-color:rgba(255,255,255,.04); }

/* خط درخشان افقی زیر */
.gal-page-header::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, rgba(99,179,237,.5) 30%, rgba(26,86,219,.8) 50%, rgba(99,179,237,.5) 70%, transparent 100%);
}

.gal-header-inner {
    position: relative;
    z-index: 2;
}

/* Eyebrow label */
.gal-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: rgba(255,255,255,.6);
    margin-bottom: 18px;
}
.gal-eyebrow::before,
.gal-eyebrow::after {
    content: '';
    width: 32px;
    height: 1.5px;
    background: rgba(255,255,255,.3);
    display: inline-block;
}

/* عنوان اصلی */
.gal-page-header h1 {
    font-size: 2.4rem !important;
    font-weight: 900 !important;
    color: #fff !important;
    margin: 0 0 18px !important;
    line-height: 1.2;
    text-shadow: 0 2px 20px rgba(0,0,0,.3);
}

/* breadcrumb */
.gal-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: .8rem;
    color: rgba(255,255,255,.5);
    margin-bottom: 28px;
    flex-wrap: nowrap;
    white-space: nowrap;
}
.gal-breadcrumb a { color: rgba(255,255,255,.7); text-decoration: none; transition: color .2s; }
.gal-breadcrumb a:hover { color: #fff; }
.gal-breadcrumb .sep { color: rgba(255,255,255,.25); font-size: .7rem; }

/* آمار */
.gal-header-stats {
    display: inline-flex;
    align-items: center;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 40px;
    padding: 10px 8px;
    backdrop-filter: blur(10px);
}
.gal-stat-item {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: .8rem;
    color: rgba(255,255,255,.75);
    padding: 0 20px;
}
.gal-stat-item + .gal-stat-item {
    border-inline-start: 1px solid rgba(255,255,255,.18);
}
.gal-stat-item i { color: rgba(255,255,255,.5); }
.gal-stat-num {
    font-weight: 900;
    color: #fff;
    font-size: 1.15rem;
}

@media (max-width: 767px) {
    .gal-page-header { padding: 42px 0 38px; }
    .gal-page-header h1 { font-size: 1.7rem !important; }
    .gal-stat-item { padding: 0 12px; font-size: .74rem; }
    .gal-stat-num { font-size: .95rem; }
}

/* ================================================================
   نوار فیلتر افقی
   ================================================================ */
.gal-filter-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 26px 0 22px;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 28px;
}

.gal-filter-bar .filter-btn {
    width: auto;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 20px;
    border: 1.5px solid #dde4ef;
    border-radius: 30px;
    font-size: .84rem;
    font-weight: 600;
    color: #475569;
    background: #fff;
    cursor: pointer;
    transition: all .22s cubic-bezier(.4,0,.2,1);
    font-family: inherit;
    line-height: 1.4;
    box-shadow: 0 1px 4px rgba(0,0,0,.05);
}
.gal-filter-bar .filter-btn::before { display: none; }
.gal-filter-bar .filter-btn:hover {
    border-color: #1a56db;
    color: #1a56db;
    background: #f0f5ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26,86,219,.15);
}
.gal-filter-bar .filter-btn.is-checked {
    background: linear-gradient(135deg, #1a56db 0%, #0e7490 100%);
    border-color: transparent;
    color: #fff;
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(26,86,219,.4);
    transform: translateY(-2px);
}
.gal-filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: 10px;
    font-size: .67rem;
    font-weight: 700;
    background: rgba(255,255,255,.22);
}
.gal-filter-bar .filter-btn:not(.is-checked) .gal-filter-count {
    background: #e8f0fe;
    color: #1a56db;
}

@media (max-width: 767px) {
    .gal-filter-bar { gap: 8px; padding: 18px 0 16px; }
    .gal-filter-bar .filter-btn { padding: 7px 15px; font-size: .8rem; }
}

/* ================================================================
   گرید ۴ ستون (بدون سایدبار)
   ================================================================ */
.gal-grid-wrap .gallery-item,
.gal-grid-wrap .grid-sizer { width: 25%; padding: 6px; }

@media (max-width: 1199px) {
    .gal-grid-wrap .gallery-item,
    .gal-grid-wrap .grid-sizer { width: 33.333%; }
}
@media (max-width: 767px) {
    .gal-grid-wrap .gallery-item,
    .gal-grid-wrap .grid-sizer { width: 50%; }
}
@media (max-width: 480px) {
    .gal-grid-wrap .gallery-item,
    .gal-grid-wrap .grid-sizer { width: 100%; }
}

/* ================================================================
   لایت‌باکس — ناوبری prev/next
   ================================================================ */
.lb-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.22);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: background .2s, transform .2s;
    z-index: 10001;
    backdrop-filter: blur(6px);
}
.lb-nav:hover { background: rgba(255,255,255,.22); transform: translateY(-50%) scale(1.1); }
.lb-nav.lb-nav-disabled { opacity: .25; cursor: default; pointer-events: none; }
.lb-prev { right: 24px; }
.lb-next { left: 24px; }

.lb-counter {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,.45);
    font-size: .76rem;
    letter-spacing: .06em;
    pointer-events: none;
}

@media (max-width: 600px) {
    .lb-prev { right: 8px; }
    .lb-next { left: 8px; }
    .lb-nav { width: 38px; height: 38px; font-size: .85rem; }
}

/* ===== بخش اصلی ===== */
.gallery-section {
    padding: 50px 0 70px;
    background: #f8fafc;
}

/* ===== سایدبار فیلتر ===== */
.gallery-sidebar {
    position: sticky;
    top: 85px;
    background: #fff;
    border-radius: 14px;
    padding: 22px 18px;
    box-shadow: 0 2px 16px rgba(0,0,0,.06);
}

.gallery-filter-title {
    font-size: .85rem;
    font-weight: 700;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e2e8f0;
}

.filter-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.filter-list li {
    margin-bottom: 4px;
}

.filter-btn {
    display: block;
    width: 100%;
    text-align: right;
    padding: 9px 12px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    color: #475569;
    font-size: .88rem;
    font-family: inherit;
    transition: background .18s, color .18s;
    position: relative;
    line-height: 1.5;
}

.filter-btn::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #cbd5e1;
    margin-left: 8px;
    vertical-align: middle;
    transition: background .18s;
}

.filter-btn:hover {
    background: #f0f9ff;
    color: #0e7490;
}

.filter-btn.is-checked {
    background: #ecfeff;
    color: #0e7490;
    font-weight: 600;
}

.filter-btn.is-checked::before {
    background: #0e7490;
}

/* فیلتر موبایل — نوار افقی */
@media (max-width: 991px) {
    .gallery-sidebar {
        position: static;
        padding: 14px 16px;
        margin-bottom: 20px;
        border-radius: 10px;
    }

    .gallery-filter-title {
        display: none;
    }

    .filter-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .filter-list li {
        margin-bottom: 0;
    }

    .filter-btn {
        width: auto;
        display: inline-block;
        padding: 6px 14px;
        border: 1.5px solid #e2e8f0;
        border-radius: 20px;
        font-size: .82rem;
    }

    .filter-btn::before {
        display: none;
    }

    .filter-btn.is-checked {
        border-color: #0e7490;
        background: #ecfeff;
    }
}

/* ===== گرید آجری Isotope ===== */
.gallery-grid {
    /* Isotope مدیریت position را برعهده می‌گیرد */
}

/* عرض ستون‌ها */
.gallery-item,
.grid-sizer {
    width: 33.333%;
    padding: 6px;
}

@media (max-width: 991px) {
    .gallery-item,
    .grid-sizer { width: 50%; }
}

@media (max-width: 480px) {
    .gallery-item,
    .grid-sizer { width: 100%; }
}

/* ===== کارت تصویر ===== */
.gallery-img-wrap {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    cursor: pointer;
    background: #e2e8f0;
    display: block;
    /* سایه ظریف */
    box-shadow: 0 1px 6px rgba(0,0,0,.08);
    transition: box-shadow .3s;
}

.gallery-img-wrap:hover {
    box-shadow: 0 6px 24px rgba(0,0,0,.14);
}

.gallery-img-wrap img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform .45s cubic-bezier(.4,0,.2,1);
}

/* ===== اورلی اطلاعات ===== */
.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(
        to top,
        rgba(2, 18, 36, .96) 0%,
        rgba(2, 18, 36, .90) 22%,
        rgba(2, 18, 36, .72) 44%,
        rgba(2, 18, 36, .42) 64%,
        rgba(2, 18, 36, .14) 82%,
        transparent 100%
    );
    padding: 56px 14px 14px;
    color: #fff;
    direction: rtl;

    /* پنهان — انیمیشن slide-up */
    transform: translateY(100%);
    transition: transform .35s cubic-bezier(.4,0,.2,1);
}

/* دسکتاپ: hover */
@media (hover: hover) and (pointer: fine) {
    .gallery-img-wrap:hover .gallery-overlay {
        transform: translateY(0);
    }

    .gallery-img-wrap:hover img {
        transform: scale(1.06);
    }
}

/* موبایل: کلاس اضافه می‌شه با تپ */
.gallery-img-wrap.overlay-visible .gallery-overlay {
    transform: translateY(0);
}

.gallery-img-wrap.overlay-visible img {
    transform: scale(1.03);
}

.overlay-title {
    font-size: .88rem;
    font-weight: 700;
    margin: 0 0 4px;
    line-height: 1.4;
    color: #fff;
    text-shadow: 0 1px 6px rgba(0,0,0,.9), 0 2px 14px rgba(0,0,0,.7);
}

.overlay-desc {
    font-size: .76rem;
    margin: 0 0 8px;
    opacity: .92;
    line-height: 1.55;
    color: #e2e8f0;
    text-shadow: 0 1px 4px rgba(0,0,0,.8);
}

.overlay-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.overlay-tag {
    background: rgba(255,255,255,.18);
    border: 1px solid rgba(255,255,255,.3);
    border-radius: 12px;
    padding: 2px 9px;
    font-size: .69rem;
    backdrop-filter: blur(6px);
    white-space: nowrap;
}

/* آیکون بزرگ‌نمایی هنگام hover دسکتاپ */
.gallery-zoom-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -60%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,.22);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    opacity: 0;
    transition: opacity .3s, transform .35s;
    pointer-events: none;
}

@media (hover: hover) and (pointer: fine) {
    .gallery-img-wrap:hover .gallery-zoom-icon {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

/* ===== لایت‌باکس ===== */
.lb-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .93);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 20px;
    animation: lbFadeIn .2s ease;
}

.lb-overlay.lb-active {
    display: flex;
}

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

.lb-close {
    position: absolute;
    top: 14px;
    left: 18px;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.25);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.4rem;
    cursor: pointer;
    transition: background .2s;
    line-height: 1;
}

.lb-close:hover {
    background: rgba(255,255,255,.25);
}

.lb-img {
    max-width: 90vw;
    max-height: 82vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,.6);
}

.lb-caption {
    color: rgba(255,255,255,.75);
    margin-top: 14px;
    font-size: .88rem;
    text-align: center;
    max-width: 500px;
}

/* ===== حالت خالی ===== */
.gallery-empty {
    text-align: center;
    padding: 80px 20px;
    color: #94a3b8;
}

.gallery-empty i {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 16px;
    opacity: .5;
}

.gallery-empty p {
    font-size: 1rem;
}

/* ================================================================
   دکمه نمایش بیشتر گالری
   ================================================================ */
.gal-load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .2s, box-shadow .2s;
    box-shadow: 0 4px 20px rgba(14,165,233,.35);
}
.gal-load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(14,165,233,.45);
}
.gal-load-more-btn i {
    font-size: 18px;
}
#gal-remaining-count {
    font-size: 13px;
    opacity: .85;
}