/* --- Portfolio Page --- */
.pf-hero {
    min-height: min(85vh, 900px);
    padding-top: 11rem;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.pf-hero::before {
    content: '';
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 70%;
    height: 60%;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    filter: blur(90px);
    z-index: 0;
}

.pf-hero .container {
    position: relative;
    z-index: 1;
    text-align: center;
}

.pf-eyebrow {
    display: inline-block;
    color: var(--primary);
    font-weight: 800;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    padding: 0.5rem 1.2rem;
    border: 1px solid rgba(0, 196, 180, 0.3);
    border-radius: 50px;
    margin-bottom: 2rem;
}

.pf-hero h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -2px;
    max-width: 900px;
    margin: 0 auto 2rem;
}

.pf-hero h1 span {
    color: var(--primary);
}

.pf-hero p {
    font-size: 1.25rem;
    color: var(--text-dim);
    max-width: 680px;
    margin: 0 auto 3rem;
}

.pf-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.pf-actions .social-btn {
    border-radius: 4px;
}

/* Stats strip */
.pf-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 6rem;
}

.pf-stat {
    background: linear-gradient(160deg, #151515 0%, #0a0a0a 100%);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 16px;
    padding: 1.6rem 1.4rem 1.8rem;
    text-align: center;
    min-height: 170px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: opacity 0.35s ease, transform 0.35s ease, border-color 0.35s ease;
}

/* Fact rotation: fade the card out, swap its content, fade back in */
.pf-stat.out {
    opacity: 0;
    transform: translateY(10px);
}

.pf-stats:hover .pf-stat {
    border-color: rgba(0, 196, 180, 0.25);
}

.pf-stat strong {
    display: block;
    font-size: 2.3rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

/* Word values ("iOS + Android", "White-label") stay on one line */
.pf-stat strong.long {
    font-size: 1.6rem;
    line-height: 1.45;
    white-space: nowrap;
}

.pf-stat span {
    color: var(--text-dim);
    font-size: 0.9rem;
}

/* Section headers */
.pf-head {
    text-align: center;
    margin-bottom: 5rem;
}

.pf-head p {
    color: var(--text-dim);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

/* Case cards */
.pf-case {
    background: linear-gradient(145deg, #121212, #181818);
    border-radius: 24px;
    padding: 1px;
    margin-bottom: 4rem;
}

.pf-case-inner {
    background: var(--bg);
    border-radius: 23px;
    padding: 3rem;
    display: grid;
    grid-template-columns: 0.8fr 1.35fr;
    gap: 3.5rem;
    align-items: center;
}

.pf-case.open .pf-case-inner {
    border-radius: 23px 23px 0 0;
}

/* "Learn more": challenge + solution, folded away by default */
.pf-more {
    background: var(--bg);
    border-radius: 0 0 23px 23px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 2.5rem 3rem 3rem;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    gap: 2rem;
    align-items: start;
    animation: pf-open 0.35s ease;
}

.pf-challenge {
    background: linear-gradient(180deg, rgba(0, 196, 180, 0.07) 0%, rgba(0, 0, 0, 0) 100%), var(--card-bg);
    border: 1px solid rgba(0, 196, 180, 0.3);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 0 30px rgba(0, 196, 180, 0.08);
}

.pf-challenge p {
    color: var(--text);
    font-size: 1.05rem;
    line-height: 1.6;
    margin-bottom: 1.2rem;
}

.pf-more-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: rgba(0, 196, 180, 0.12);
    border: 1px solid rgba(0, 196, 180, 0.3);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.4rem;
}

.pf-solution .pf-sub {
    margin-top: 0.4rem;
}

.pf-sol-grid {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.9rem;
}

.pf-sol-grid li {
    position: relative;
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 1.1rem 1.2rem 1.1rem 3.6rem;
    font-size: 0.95rem;
    line-height: 1.45;
    min-height: 72px;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.pf-sol-grid li::before {
    content: '✓';
    position: absolute;
    left: 1.1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(0, 196, 180, 0.12);
    color: var(--primary);
    font-weight: 800;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pf-sol-grid li:hover {
    border-color: rgba(0, 196, 180, 0.4);
    transform: translateY(-3px);
}

.pf-more[hidden] {
    display: none;
}

@keyframes pf-open {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: none; }
}

.pf-sub {
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.8rem;
}

.pf-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.pf-link:hover {
    text-decoration: underline;
}

.pf-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

/* Technology boxes */
.pf-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text);
    background: var(--card-bg);
    padding: 0.4rem 0.75rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    white-space: nowrap;
    transition: var(--transition);
}

.pf-chip::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 6px var(--primary-glow);
}

.pf-chip:hover {
    border-color: rgba(0, 196, 180, 0.4);
}

.pf-case.reverse .pf-case-inner {
    grid-template-columns: 1.35fr 0.8fr;
}

.pf-case.reverse .pf-visual-col {
    order: -1;
}

.pf-tag {
    color: var(--primary);
    font-weight: 800;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.pf-case h3 {
    font-size: 2.4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.pf-case-desc {
    color: var(--text-dim);
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
}

.pf-features {
    list-style: none;
    display: grid;
    gap: 0.9rem;
    margin-bottom: 2rem;
}

.pf-features li {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
    color: var(--text);
    font-size: 0.98rem;
}

.pf-features li::before {
    content: '✓';
    color: var(--primary);
    font-weight: 800;
    flex-shrink: 0;
}

.pf-case-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.pf-case-actions .btn-primary,
.pf-case-actions .social-btn {
    padding: 0.95rem 1.4rem;
    border-radius: 4px;
    white-space: nowrap;
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
}

.pf-case-actions .btn-primary {
    border: none;
}

.pf-case-actions .social-btn[aria-expanded="true"] {
    border-color: var(--primary);
}

/* Expertise grid: minimal cards in the ARA look (black, teal glow, big index) */
.pf-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    counter-reset: pf-card;
}

.pf-card {
    counter-increment: pf-card;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    background: linear-gradient(160deg, #151515 0%, #0a0a0a 100%);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 20px;
    padding: 2.2rem 2rem 2.4rem;
    transition: var(--transition);
}

/* Teal glow in the corner, brighter on hover */
.pf-card::before {
    content: '';
    position: absolute;
    top: -70px;
    right: -70px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(0, 196, 180, 0.22) 0%, transparent 70%);
    opacity: 0.5;
    z-index: -1;
    transition: var(--transition);
}

/* Big faded index: 01 ... 06 */
.pf-card::after {
    content: counter(pf-card, decimal-leading-zero);
    position: absolute;
    top: 1.2rem;
    right: 1.6rem;
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -2px;
    color: transparent;
    -webkit-text-stroke: 1px rgba(0, 196, 180, 0.25);
    transition: var(--transition);
}

.pf-card:hover {
    border-color: rgba(0, 196, 180, 0.55);
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 196, 180, 0.12);
}

.pf-card:hover::before {
    opacity: 1;
}

.pf-card:hover::after {
    -webkit-text-stroke-color: rgba(0, 196, 180, 0.6);
}

.pf-card-icon {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: linear-gradient(135deg, #00e6d4 0%, #00a497 100%);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.6rem;
    box-shadow: 0 0 25px var(--primary-glow);
}

.pf-card h4 {
    font-size: 1.3rem;
    line-height: 1.25;
    margin-bottom: 0.6rem;
    padding-right: 3.5rem;
}

.pf-card p {
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.55;
}

.pf-sectors {
    margin-top: 3.5rem;
    text-align: center;
}

.pf-sectors .pf-chips {
    justify-content: center;
    margin-bottom: 0;
}

.pf-sectors .pf-chip {
    font-size: 0.85rem;
    padding: 0.55rem 1rem;
}

/* AI section */
.pf-ai {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.pf-ai-col {
    background: #070707;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    padding: 3rem;
}

.pf-ai-col h3 {
    font-size: 1.6rem;
    margin-bottom: 0.7rem;
}

.pf-ai-col > p {
    color: var(--text-dim);
    margin-bottom: 2rem;
}

.pf-ai-note {
    margin-top: 2.5rem;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.95rem;
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

/* Process steps */
.pf-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    counter-reset: step;
}

.pf-step {
    border-top: 2px solid rgba(0, 196, 180, 0.3);
    padding-top: 1.5rem;
}

.pf-step::before {
    counter-increment: step;
    content: '0' counter(step);
    display: block;
    color: var(--primary);
    font-weight: 800;
    font-size: 0.9rem;
    letter-spacing: 2px;
    margin-bottom: 0.8rem;
}

.pf-step h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.pf-step p {
    color: var(--text-dim);
    font-size: 0.92rem;
}

.pf-cta p {
    color: var(--text-dim);
    font-size: 1.1rem;
    margin: 1.5rem auto 2.5rem;
    max-width: 600px;
}

.pf-section {
    padding: 6rem 0;
}

/* Responsive */
@media (max-width: 1100px) {
    .pf-grid {
        grid-template-columns: 1fr 1fr;
    }
    .pf-steps {
        grid-template-columns: 1fr 1fr;
        row-gap: 2.5rem;
    }
}

@media (max-width: 968px) {
    .pf-hero {
        padding-top: 9rem;
    }
    .pf-hero h1 {
        font-size: 2.6rem;
        letter-spacing: -1px;
    }
    .pf-stats {
        grid-template-columns: 1fr 1fr;
        margin-top: 4rem;
    }
    .pf-case-inner,
    .pf-case.reverse .pf-case-inner {
        grid-template-columns: 1fr;
        padding: 2rem 1.5rem;
        gap: 2.5rem;
    }
    .pf-case .pf-visual-col {
        order: -1;
    }
    .pf-more {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 2rem 1.5rem;
    }
    .pf-sol-grid {
        grid-template-columns: 1fr;
    }
    .pf-case h3 {
        font-size: 2rem;
    }
    .pf-ai {
        grid-template-columns: 1fr;
    }
    .pf-ai-col {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 600px) {
    /* Page content only: the nav keeps the same padding as every other page */
    .page-wrapper .container {
        padding: 0 1rem;
    }
    .pf-grid,
    .pf-steps {
        grid-template-columns: 1fr;
    }
    .pf-stat strong {
        font-size: 2rem;
    }
}

/* Status badge next to a case tag (e.g. "In development") */
.pf-status {
    display: table;
    margin-top: 0.6rem;
    padding: 0.2rem 0.6rem;
    border-radius: 50px;
    border: 1px solid rgba(0, 196, 180, 0.4);
    background: rgba(0, 196, 180, 0.08);
    font-size: 0.68rem;
    letter-spacing: 1px;
    vertical-align: middle;
}

/* Anchors (#vox, #aravoi, #tio) land below the fixed nav */
.pf-case {
    scroll-margin-top: 100px;
}