/* ═══════════════════════════════════════════════════════════
   ROSA V3 — PORTFOLIO PAGE CSS
   Style: Modern B2B SaaS Premium Creative
   ═══════════════════════════════════════════════════════════ */

/* ─── PORTFOLIO HERO ────────────────────────────────────── */
.portfolio-hero {
    padding: calc(var(--nav-height) + 64px) 0 48px;
    background: var(--bg-body);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.portfolio-hero::before {
    content: '';
    position: absolute;
    top: -15%;
    left: 20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(229, 93, 37, 0.04) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.portfolio-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    line-height: 1.25;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.portfolio-hero .section-subtitle {
    max-width: 640px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* ─── FILTER BAR ────────────────────────────────────────── */
.filter-bar {
    position: sticky;
    top: var(--nav-height);
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: var(--space-md) 0;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.filter-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    gap: var(--space-xs);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.filter-inner::-webkit-scrollbar {
    display: none;
}

.filter-btn {
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    white-space: nowrap;
    transition: all var(--transition-fast);
    cursor: pointer;
    display: flex;
    align-items: center;
}

.filter-btn:hover {
    color: var(--primary);
    border-color: var(--primary-light);
    background: var(--primary-glow);
}

.filter-btn.active {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
    box-shadow: var(--shadow-primary);
}

.filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    border-radius: 50%;
    font-size: 10px;
    font-weight: 700;
    margin-left: 6px;
    background: rgba(17, 19, 24, 0.06);
    color: var(--text-muted);
}

.filter-btn.active .filter-count {
    background: rgba(255, 255, 255, 0.22);
    color: #fff;
}

/* ─── GALLERY GRID ──────────────────────────────────────── */
.gallery-section {
    padding: var(--space-2xl) 0 var(--section-padding);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ─── PORTFOLIO ITEM CARD ───────────────────────────────── */
.portfolio-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    background: var(--bg-white);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: transform 0.4s var(--ease-out),
                box-shadow 0.4s var(--ease-out),
                border-color 0.3s ease,
                opacity 0.4s ease;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-item.animating-out {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
}

.portfolio-item.animating-in {
    opacity: 0;
    transform: scale(0.95);
}

.portfolio-thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #000;
}

.portfolio-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out);
    display: block;
}

.portfolio-item:hover .portfolio-thumb img {
    transform: scale(1.04);
}

/* Overlay on hover */
.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 25, 41, 0.85) 0%, rgba(15, 25, 41, 0.25) 60%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-lg);
    z-index: 2;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.overlay-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    width: fit-content;
    margin-bottom: var(--space-xs);
}

.overlay-title {
    color: #fff;
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: 2px;
}

.overlay-subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-xs);
}

.compare-btn {
    position: absolute;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 18px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    font-weight: 700;
    font-size: var(--font-size-xs);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 1;
    transition: all var(--transition-fast);
    pointer-events: none;
    white-space: nowrap;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 3;
}

.portfolio-item:hover .compare-btn {
    transform: translateX(-50%) translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.22);
    background: #fff;
}

/* Portfolio item info bar */
.portfolio-info {
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    border-top: 1px solid var(--border);
}

.portfolio-info-left h4 {
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    color: var(--text);
    margin-bottom: 2px;
}

.portfolio-info-left span {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.portfolio-info-right {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-xs);
    color: var(--primary);
    font-weight: 600;
}

/* ─── LIGHTBOX MODAL ────────────────────────────────────── */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    background: rgba(15, 25, 41, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s var(--ease-out), visibility 0.35s var(--ease-out);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.lightbox-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
}

.ba-drag-hint {
    text-align: center;
    margin-top: var(--space-md);
    font-size: 10px;
    color: var(--text-on-dark-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-weight: 600;
    user-select: none;
}

.lightbox-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.lightbox-title h3 {
    color: #fff;
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
}

.lightbox-title span {
    color: var(--text-on-dark-muted);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ─── BEFORE/AFTER INTERACTIVE SLIDER ───────────────────── */
.ba-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: col-resize;
    user-select: none;
    -webkit-user-select: none;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.ba-slider img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ba-after {
    clip-path: inset(0 0 0 50%);
    z-index: 2;
}

.ba-before {
    z-index: 1;
}

.ba-divider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: rgba(255, 255, 255, 0.95);
    z-index: 5;
    transform: translateX(-50%);
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

.ba-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: col-resize;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.ba-handle:hover {
    transform: translate(-50%, -50%) scale(1.08);
}

.ba-handle.dragging {
    transform: translate(-50%, -50%) scale(1.04);
}

.ba-handle svg {
    width: 18px;
    height: 18px;
    color: var(--text-primary);
    stroke-width: 2.5;
}

/* Slide labels */
.ba-label {
    position: absolute;
    top: 16px;
    z-index: 4;
    padding: 5px 12px;
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.ba-label-before {
    left: 16px;
    background: rgba(17, 19, 24, 0.75);
    color: #fff;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.ba-label-after {
    right: 16px;
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-primary);
}

/* Lightbox navigation arrows */
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev {
    left: -64px;
}

.lightbox-next {
    right: -64px;
}

/* ─── STATS BAR ─────────────────────────────────────────── */
.portfolio-stats {
    background: var(--bg-dark);
    border: 1px solid var(--bg-dark-border);
    padding: var(--space-2xl) 0;
}

.portfolio-stats .container {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    flex-wrap: wrap;
}

.portfolio-stat {
    text-align: center;
}

.portfolio-stat strong {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(2rem, 3.5vw, 2.5rem);
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.portfolio-stat span {
    display: block;
    margin-top: var(--space-xs);
    font-size: var(--font-size-xs);
    color: var(--text-on-dark-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ─── EMPTY STATE ───────────────────────────────────────── */
.gallery-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    color: var(--text-muted);
}

.gallery-empty .empty-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.gallery-empty p {
    font-size: var(--font-size-sm);
}

/* ─── RESPONSIVE RULES ──────────────────────────────────── */
@media (max-width: 1140px) {
    .lightbox-prev {
        left: 12px;
    }

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

@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .portfolio-hero {
        padding: calc(var(--nav-height) + 32px) 0 40px;
    }

    .filter-inner {
        padding: 0 var(--space-md);
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        padding: 0 var(--space-md);
    }

    .portfolio-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .portfolio-info-right {
        align-self: flex-start;
    }

    .portfolio-stats .container {
        gap: var(--space-xl);
    }

    /* Lightbox on mobile/tablet */
    .lightbox-content {
        width: 94%;
    }

    .lightbox-prev,
    .lightbox-next {
        display: none;
    }

    .ba-slider {
        aspect-ratio: 4 / 3;
    }

    .ba-handle {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 480px) {
    .filter-btn {
        padding: 6px 14px;
        font-size: 11px;
    }

    .portfolio-info {
        padding: var(--space-sm) var(--space-md);
    }
}