/* ─── Designs Page Specific Styles ─── */

.designs-page-body {
    overflow-y: auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.designs-main {
    flex: 1;
    padding-top: 100px; /* Header spacing */
}

/* Hero Section */
.designs-hero {
    padding: 60px 0 20px;
}

.back-link-wrapper {
    margin-bottom: 24px;
}

.back-to-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 8px 16px;
    border-radius: 30px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.back-to-home:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.06);
    transform: translateX(-4px);
}

.designs-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    letter-spacing: -1.5px;
    margin-bottom: 12px;
}

.designs-subtitle {
    max-width: 600px;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Category Filter Bar */
.filter-bar {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    margin-bottom: 40px;
    overflow-x: auto;
    padding: 4px 4px 12px;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none;  /* IE and Edge */
}

.filter-bar::-webkit-scrollbar {
    display: none; /* Chrome, Safari and Opera */
}

.filter-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 10px 20px;
    border-radius: 40px;
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    white-space: nowrap;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.04);
}

.filter-btn.active {
    color: var(--bg-color);
    background: var(--text-primary);
    border-color: var(--text-primary);
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.15);
}

/* Portfolio Designs Grid (Masonry Layout) */
.designs-grid {
    column-count: 3;
    column-gap: 24px;
    margin-bottom: 80px;
    will-change: transform, opacity;
}

/* Design Card Item */
.design-card-item {
    display: inline-block;
    width: 100%;
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 24px;
    break-inside: avoid;
    transform-origin: center;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    outline: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.design-card-inner {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.design-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Card Overlays */
.card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(5, 5, 5, 0.95) 0%, rgba(5, 5, 5, 0.6) 50%, rgba(5, 5, 5, 0) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.card-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    transform: translateY(15px);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    margin-bottom: 4px;
}

.card-tag {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    transform: translateY(15px);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1) 0.05s;
}

/* Card Interactions */
.design-card-item:hover,
.design-card-item:focus {
    transform: translateY(-6px) scale(1.01);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 0 2px rgba(255, 255, 255, 0.1);
}

.design-card-item:hover .design-img,
.design-card-item:focus .design-img {
    transform: scale(1.06);
}

.design-card-item:hover .card-overlay,
.design-card-item:focus .card-overlay {
    opacity: 1;
}

.design-card-item:hover .card-title,
.design-card-item:hover .card-tag,
.design-card-item:focus .card-title,
.design-card-item:focus .card-tag {
    transform: translateY(0);
}

/* Gallery Filter Transition States */
.design-card-item.hidden {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
    pointer-events: none;
    position: absolute;
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
    border: none;
    box-shadow: none;
}

/* Fullscreen Lightbox Modal */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(5, 5, 5, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: scale(0.9);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.lightbox.active .lightbox-content {
    transform: scale(1);
}

#lightbox-img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.lightbox-caption {
    margin-top: 16px;
    text-align: center;
}

#lightbox-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

#lightbox-tag {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Lightbox Controls */
.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 10001;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.lightbox-close {
    top: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.8rem;
    line-height: 1;
}

.lightbox-prev,
.lightbox-next {
    top: 50%;
    transform: translateY(-50%);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    font-size: 1.2rem;
}

.lightbox-prev {
    left: 40px;
}

.lightbox-next {
    right: 40px;
}

/* Adjust button states when active/clicked */
.lightbox-close:active,
.lightbox-prev:active,
.lightbox-next:active {
    transform: translateY(-50%) scale(0.95);
}

.lightbox-close:active {
    transform: scale(0.95);
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .lightbox-prev {
        left: 20px;
    }
    .lightbox-next {
        right: 20px;
    }
}

@media (max-width: 768px) {
    .designs-hero {
        padding: 40px 0 10px;
    }
    .filter-bar {
        margin-bottom: 24px;
    }
    .designs-grid {
        column-count: 2;
        column-gap: 16px;
    }
    .design-card-item {
        margin-bottom: 16px;
    }
    .lightbox-close {
        top: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    .lightbox-prev,
    .lightbox-next {
        width: 44px;
        height: 44px;
        font-size: 1rem;
        background: rgba(5, 5, 5, 0.6);
        border-color: rgba(255, 255, 255, 0.15);
    }
    .lightbox-prev {
        left: 15px;
    }
    .lightbox-next {
        right: 15px;
    }
}

@media (max-width: 576px) {
    .designs-grid {
        column-count: 2;
        column-gap: 12px;
    }
    .design-card-item {
        margin-bottom: 12px;
        border-radius: 10px;
    }
    .card-overlay {
        padding: 12px;
    }
    .card-title {
        font-size: 0.85rem;
    }
    .card-tag {
        font-size: 0.65rem;
    }
    .lightbox-prev,
    .lightbox-next {
        display: none; /* Hide navigation buttons on mobile touch, user swipes instead */
    }
}