/* ===========================
   PORTFOLIO / GALLERY
   =========================== */
.portfolio {
    padding: 120px 0;
    background: var(--bg-primary);
}

.portfolio-header {
    text-align: center;
    margin-bottom: 56px;
}

.portfolio-header .section-divider {
    margin: 20px auto 0;
}

/* Filter Buttons */
.filter-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 48px;
}

.filter-btn {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-subtle);
    background: var(--bg-secondary);
    padding: 12px 24px;
    border-radius: 100px;
    transition: all var(--transition-smooth);
}

.filter-btn:hover,
.filter-btn:focus-visible {
    background: color-mix(in srgb, var(--bg-secondary) 80%, var(--accent) 20%);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--accent);
    color: var(--bg-primary);
}

/* ===========================
   PREMIUM DYNAMIC GALLERY
   =========================== */
.gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (min-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .gallery-card {
        aspect-ratio: 2/3;
    }
}

/* Card Design */
.gallery-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-secondary);
    box-shadow: var(--shadow-card);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        box-shadow 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    aspect-ratio: 4/3;
    transform: translate3d(0, 0, 0);
    will-change: transform;
}


.card-image-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: inherit;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Automatic Horizontal Swipe Carousel */
.slideshow-container {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: inherit;
}

.slideshow-track {
    display: flex;
    width: 100%;
    height: 100%;
    transform: translate3d(0%, 0, 0);
    will-change: transform;
}

.slideshow-track .slide {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Carousel Progress Indicators */
.carousel-indicators {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 10;
    pointer-events: none;
    transition: opacity var(--transition-smooth);
}

.indicator-dot {
    width: 12px;
    height: 2px;
    background: rgba(255, 255, 255, 0.35);
    border-radius: 2px;
    transition: background 0.3s ease, width 0.3s ease;
}

.indicator-dot.active {
    background: #F4F4F4;
    width: 20px;
}

[data-theme="light"] .indicator-dot {
    background: rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .indicator-dot.active {
    background: #2C3539;
}

/* Photo Count Badge */
.photo-count-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 10;
    background: rgba(18, 18, 18, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: #F4F4F4;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 6px 14px;
    border-radius: 100px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: opacity var(--transition-smooth);
    pointer-events: none;
}

[data-theme="light"] .photo-count-badge {
    background: rgba(255, 255, 255, 0.65);
    color: #121212;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

/* Card Overlay */
.card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top,
            rgba(18, 22, 20, 0.9) 0%,
            rgba(18, 22, 20, 0.4) 60%,
            transparent 100%);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
    z-index: 5;
    pointer-events: none;
}

[data-theme="light"] .card-overlay {
    background: linear-gradient(to top,
            rgba(250, 250, 250, 0.95) 0%,
            rgba(250, 250, 250, 0.5) 60%,
            transparent 100%);
}

/* Card Information Fading Up */
.card-info {
    transform: translateY(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.05s,
        opacity 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.05s;
}

.card-category {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    display: block;
    margin-bottom: 6px;
}

.card-name {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.card-date {
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    color: var(--text-subtle);
    display: block;
    margin-bottom: 20px;
}

.card-photos {
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    color: var(--text-subtle);
    display: block;
    margin-bottom: 20px;
}

/* Action Buttons */
.card-actions {
    display: flex;
    gap: 12px;
    transform: translateY(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.1s,
        opacity 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.1s;
}

/* Mobile Interaction Overrides and Global Active State */
    .gallery-card {
        /* Scale/Close transition duration 200ms */
        transition: transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
            box-shadow 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .card-overlay {
        /* Close overlay duration 200ms */
        transition: opacity 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .card-info {
        transition: transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
            opacity 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .card-actions {
        transition: transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
            opacity 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    /* Tap/Active State - Scale 1.00 to 1.02, 300ms duration */
    .gallery-card.active {
        transform: scale(1.02);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94),
            box-shadow 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    [data-theme="light"] .gallery-card.active {
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    }

    .gallery-card.active .card-image-container {
        transform: scale(1.05);
        transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .gallery-card.active .card-overlay {
        opacity: 1;
        pointer-events: auto;
        transition: opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .gallery-card.active .card-info {
        transform: translateY(0);
        opacity: 1;
        transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.05s,
            opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.05s;
    }

    .gallery-card.active .card-actions {
        transform: translateY(0);
        opacity: 1;
        transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.1s,
            opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.1s;
    }


/* Mobile Compact 2-Column Grid Breakpoint (< 768px) */
@media (max-width: 767px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        /* Spacing gap between 8px and 12px */
        padding: 0 12px;
    }

    .gallery-card {
        aspect-ratio: 1/1;
        /* 1:1 Square ratio */
        border-radius: 12px;
        /* Rounded corners 12px to 16px */
    }

    /* Photo Count Badge layout on mobile */
    .photo-count-badge {
        top: 10px;
        right: 10px;
        padding: 5px 10px;
        font-size: 0.65rem;
    }

    /* Card Tap active scaling: 1.00 -> 1.03 */
    .gallery-card.active {
        transform: scale(1.03);
        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
    }

    /* Compact Overlay adjustments for mobile */
    .card-overlay {
        padding: 16px;
    }

    .card-name {
        font-size: 1.15rem;
        margin-bottom: 2px;
    }

    .card-category {
        font-size: 0.55rem;
        margin-bottom: 1px;
    }

    .card-date {
        font-size: 0.6rem;
        margin-bottom: 12px;
    }

    .card-actions {
        gap: 6px;
        flex-direction: column;
    }

    .card-btn {
        padding: 4px 5px;
        font-size: 0.45rem;
        letter-spacing: 0.05em;
    }
}

.card-btn {
    flex: 1;
    padding: 5px 7px;
    font-size: 0.5rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    text-align: center;
    transition: all var(--transition-smooth);
}

.card-btn.details-btn {
    background: var(--accent);
    color: var(--bg-primary);
}

.card-btn.details-btn:hover {
    filter: brightness(0.85);
}

.card-btn.instagram-btn {
    border: 1px solid var(--accent);
    color: var(--accent);
    background: transparent;
}

.card-btn.instagram-btn:hover {
    background: color-mix(in srgb, var(--accent) 15%, transparent);
}

/* Skeleton Loader Shimmer */
.skeleton-loader {
    position: absolute;
    inset: 0;
    background: var(--bg-secondary);
    z-index: 1;
    overflow: hidden;
    transition: opacity 0.5s ease;
}

.gallery-card.loaded .skeleton-loader {
    opacity: 0;
    pointer-events: none;
}

.skeleton-loader::after {
    content: '';
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.05) 20%,
            rgba(255, 255, 255, 0.1) 60%,
            transparent);
    animation: shimmer 1.6s infinite;
}

[data-theme="light"] .skeleton-loader::after {
    background: linear-gradient(90deg,
            transparent,
            rgba(0, 0, 0, 0.03) 20%,
            rgba(0, 0, 0, 0.06) 60%,
            transparent);
}

@keyframes shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* Hidden gallery state */
.gallery-card.hidden {
    display: none !important;
}

/* Custom Image Alignments for Cropped Subjects */
.gallery-card[data-id="juvenile-brahminy-kite"] .card-image-container img,
.gallery-card[data-id="black-winged-kite"] .card-image-container img {
    object-position: top center;
}

/* Homepage Portfolio Banner */
.portfolio-banner-wrap {
    position: relative;
    width: 100%;
    margin-top: 40px;
}

.portfolio-banner {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #000 url("../assets/Portfolio/Portfolio%20opening/portfolio%20opening%20image%20for%20desktop.jpg") center center / cover no-repeat;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 40px;
}

.banner-explore-btn {
    font-size: 1.1rem;
    padding: 14px 32px;
}

@media (max-width: 768px) {
    .portfolio-banner {
        aspect-ratio: 4/5;
        background-image: url("../assets/Portfolio/Portfolio%20opening/portfolio%20opening%20image%20for%20mobile.jpg");
        padding-bottom: 24px;
    }
}