/* Portfolio Page Vertical Redesign */
.mx-auto { margin-left: auto; margin-right: auto; }
.text-center { text-align: center; }
.pb-15vh { padding-bottom: 20vh; }

/* Hero Section */
.portfolio-hero-vertical {
    padding-top: 25vh;
    padding-bottom: 15vh;
    background: var(--bg-color);
}
.pt-title { 
    font-size: clamp(3rem, 8vw, 6rem); 
    margin-bottom: 1.5rem; 
    font-family: var(--font-heading);
}
.pt-subtitle { 
    font-size: 1.3rem; 
    max-width: 600px; 
    color: var(--text-muted); 
    line-height: 1.8;
}

/* Case Row */
.case-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 6vw;
    align-items: center;
}
.case-reverse .case-grid {
    /* Reverse order on desktop */
    grid-template-columns: 1fr 1.2fr;
}
.case-reverse .case-img-col {
    order: 2;
}
.case-reverse .case-text-col {
    order: 1;
}

.case-img-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
    border-radius: 20px;
    overflow: hidden;
}
/* Custom UI Mockup Backgrounds */
.img-placeholder-1 { background: url('images/amazon_dashboard_mockup.png') center center/cover no-repeat; }
.img-placeholder-2 { background: url('images/product_design_mockup.png') center center/cover no-repeat; }
.img-placeholder-3 { background: url('images/seo_network_mockup.png') center center/cover no-repeat; }

.case-img-inner {
    position: absolute;
    top: -20%; /* Expanded for parallax room */
    left: 0;
    width: 100%;
    height: 140%;
    /* Create visual texture inside the wrapper for parallax */
    background-color: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.03);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.case-category {
    font-family: var(--font-heading);
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    display: block;
}
.case-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 2rem;
}
.case-desc {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 3rem;
    line-height: 1.8;
}
.case-btn {
    display: inline-block;
    cursor: none; /* Relies on main js */
}

/* Outro */
.portfolio-outro {
    padding: 10vh 0 20vh;
}
.outro-content {
    background: radial-gradient(circle at center, rgba(44,252,163,0.05) 0%, transparent 60%);
    padding: 6rem 2rem;
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 30px;
}
.outro-title {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 1.5rem;
}
.outro-desc {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 4rem;
}
.btn-inverted {
    background: var(--accent);
    color: #000;
}
.btn-inverted:hover {
    background: var(--text-main);
    color: #000;
}

/* ---- Filter Tabs ---- */

.filter-tabs {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 3rem;
    padding-bottom: 1rem;
}
.filter-btn {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 999px;
    padding: 0.55rem 1.4rem;
    cursor: pointer;
    transition: all 0.3s ease;
}
.filter-btn:hover {
    color: var(--text-main);
    border-color: rgba(255,255,255,0.35);
}
.filter-btn.active {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
}

/* ---- Case Category Pills ---- */
.case-tags-row {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}
.case-category-pill {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent);
    border: 1px solid rgba(44,252,163,0.35);
    border-radius: 999px;
    padding: 0.3rem 0.9rem;
}

/* ---- Case row hidden state (for filter) ---- */
.case-row {
    transition: opacity 0.4s ease, transform 0.4s ease;
}
.case-row.hidden {
    display: none;
}
.case-row.fade-out {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

/* ---- Responsive ---- */
@media(max-width: 992px) {
    .case-grid, .case-reverse .case-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .case-reverse .case-img-col { order: 1; }
    .case-reverse .case-text-col { order: 2; }
    .portfolio-hero-vertical { padding-top: 15vh; padding-bottom: 10vh; }
    .pb-15vh { padding-bottom: 10vh; }
}