/* ===== PORTFOLIO PAGE ===== */
body.portfolio-page { background: var(--color-bg); }

/* Hero */
.pf-hero {
    padding: 10rem var(--container-pad) 3rem;
    max-width: var(--container-max);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.pf-hero-inner { max-width: 860px; position: relative; z-index: 1; }

.pf-hero-mark {
    position: absolute;
    top: 6rem;
    right: -2rem;
    font-family: var(--font-mono);
    font-size: clamp(16rem, 28vw, 28rem);
    line-height: 1;
    color: var(--color-accent);
    opacity: 0.13;
    pointer-events: none;
    z-index: 0;
    user-select: none;
}

.pf-hero-title {
    font-family: var(--font-sans);
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.04em;
    margin: 1.25rem 0 1.5rem;
}

.pf-hero-sub {
    font-family: var(--font-sans);
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    line-height: 1.6;
    color: var(--color-text-dim);
    max-width: 620px;
    margin-bottom: 2rem;
}

.pf-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    color: var(--color-text-dim);
    text-transform: uppercase;
    padding-top: 1.25rem;
    border-top: 1px dashed var(--color-border);
}
.pf-hero-meta b {
    font-family: var(--font-sans);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
    margin-right: 0.4rem;
    letter-spacing: -0.02em;
}

/* Tabs */
.pf-tabs-wrap {
    position: sticky;
    top: 70px;
    z-index: 10;
    background: color-mix(in srgb, var(--color-bg) 85%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem var(--container-pad);
}

.pf-tabs {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    gap: 0.5rem;
    position: relative;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 0.5rem 0;
}
.pf-tabs::-webkit-scrollbar { display: none; }

.pf-tab {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: 99px;
    background: var(--color-white);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.25s ease;
    z-index: 1;
}

.pf-tab:hover { transform: translateY(-2px); border-color: var(--color-text); }

.pf-tab.is-active {
    background: var(--color-text);
    color: var(--color-white);
    border-color: var(--color-text);
}

.pf-tab-count {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    padding: 0.15rem 0.45rem;
    border-radius: 99px;
    background: var(--color-bg-elevated);
    color: var(--color-text-dim);
    transition: all 0.25s ease;
}
.pf-tab.is-active .pf-tab-count {
    background: var(--color-accent);
    color: var(--color-text);
}

.pf-tab-indicator {
    position: absolute;
    bottom: -1rem;
    left: 0;
    height: 2px;
    background: var(--color-accent);
    transition: transform 0.35s cubic-bezier(.76,0,.24,1), width 0.35s cubic-bezier(.76,0,.24,1);
    pointer-events: none;
}

/* Grid */
.pf-grid-wrap {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 3rem var(--container-pad) 5rem;
}

.pf-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.pf-card {
    grid-column: span 3;
    display: flex;
    flex-direction: column;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 22px;
    overflow: hidden;
    position: relative;
    text-decoration: none;
    color: inherit;
    box-shadow: 6px 6px 0 rgba(26, 26, 46, 0.06);
    transition: transform 0.35s cubic-bezier(.2,.8,.2,1), box-shadow 0.35s ease, opacity 0.35s ease;
    animation: pfCardIn 0.5s cubic-bezier(.2,.8,.2,1) both;
    animation-delay: var(--d, 0ms);
}

.pf-card-large { grid-column: span 6; flex-direction: row; }

/* Alternating shape rhythm for branding regulars: square (2) + wide rect (4) per row */
.pf-card[data-cat="branding"]:not(.pf-card-large):nth-of-type(odd) {
    grid-column: span 2;
}
.pf-card[data-cat="branding"]:not(.pf-card-large):nth-of-type(odd) .pf-card-media {
    aspect-ratio: 1 / 1;
}
.pf-card[data-cat="branding"]:not(.pf-card-large):nth-of-type(even) {
    grid-column: span 4;
}
.pf-card[data-cat="branding"]:not(.pf-card-large):nth-of-type(even) .pf-card-media {
    aspect-ratio: 16 / 10;
}

/* Half-width square systems card — paired side-by-side to break the all-wide rhythm */
.pf-card-square {
    grid-column: span 3;
    flex-direction: column;
}
.pf-card-square .pf-card-media {
    aspect-ratio: 1 / 1;
    flex: none;
    min-height: 0;
}

@keyframes pfCardIn {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

.pf-card.is-hidden {
    display: none;
}

.pf-card:hover {
    transform: translateY(-4px);
    box-shadow: 10px 10px 0 var(--color-accent);
    border-color: var(--color-text);
}

.pf-card-media {
    position: relative;
    aspect-ratio: 16 / 10;
    background:
        radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--c2) 12%, transparent), transparent 55%),
        linear-gradient(135deg, var(--c) 0%, color-mix(in srgb, var(--c) 70%, var(--c2)) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.pf-card-large .pf-card-media {
    aspect-ratio: auto;
    flex: 1 1 55%;
    min-height: 320px;
}

.pf-card-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,0,0,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.05) 1px, transparent 1px);
    background-size: 28px 28px;
    opacity: 0.5;
    pointer-events: none;
}

.pf-card-glyph {
    font-family: var(--font-mono);
    font-size: clamp(4rem, 10vw, 8rem);
    color: var(--c2);
    line-height: 1;
    opacity: 0.95;
    transform: translateZ(0);
    transition: transform 0.5s cubic-bezier(.2,.8,.2,1);
    position: relative;
    z-index: 1;
}

.pf-card:hover .pf-card-glyph {
    transform: rotate(-6deg) scale(1.06);
}

.pf-card-body {
    padding: 1.5rem 1.5rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.pf-card-large .pf-card-body {
    flex: 1 1 45%;
    padding: 2.5rem 2.5rem 2.25rem;
    justify-content: space-between;
    gap: 1rem;
    position: relative;
}
.pf-card-large .pf-card-body::after {
    content: 'View case study →';
    margin-top: 0.4rem;
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-text);
    padding: 0.7rem 1.1rem;
    border: 1px solid var(--color-text);
    border-radius: 99px;
    transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
}
.pf-card-large:hover .pf-card-body::after {
    background: var(--color-text);
    color: var(--color-white);
    transform: translateX(4px);
}
.pf-card-large .pf-card-arrow { display: none; }

.pf-card-cat {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}
.pf-card-cat::before {
    content: '';
    width: 18px;
    height: 1px;
    background: currentColor;
    opacity: 0.6;
}

.pf-card-title {
    font-family: var(--font-sans);
    font-size: clamp(1.3rem, 2vw, 1.7rem);
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.05;
    margin: 0;
}
.pf-card-large .pf-card-title {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.pf-card-desc {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--color-text-dim);
    margin: 0;
}

.pf-card-tags {
    list-style: none;
    padding: 0.85rem 0 0;
    margin: 0.6rem 0 0;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}
.pf-card-tags li {
    padding: 0;
    border: 0;
    background: none;
    color: inherit;
    display: inline-flex;
    align-items: center;
}
.pf-card-tags li + li::before {
    content: '·';
    margin: 0 0.6rem;
    opacity: 0.55;
}

.pf-card-arrow {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 38px;
    height: 38px;
    border-radius: 99px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transform: rotate(-45deg);
    transition: all 0.3s ease;
}
.pf-card:hover .pf-card-arrow {
    transform: rotate(0deg);
    background: var(--color-accent);
    border-color: var(--color-text);
}

/* Empty state */
.pf-empty {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--color-text-dim);
    font-family: var(--font-sans);
}
.pf-empty p { margin-top: 0.75rem; }

/* Active nav */
.header .nav-link.active { color: var(--color-text); font-weight: 600; }

/* Responsive */
@media (max-width: 991px) {
    .pf-grid { grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
    .pf-card { grid-column: span 2; }
    .pf-card-large { grid-column: span 4; }
    .pf-card-square { grid-column: span 2; }
    .pf-card[data-cat="branding"]:not(.pf-card-large):nth-of-type(odd),
    .pf-card[data-cat="branding"]:not(.pf-card-large):nth-of-type(even) {
        grid-column: span 2;
    }
    .pf-tabs-wrap { top: 64px; }
}

@media (max-width: 767px) {
    .pf-hero { padding-top: 7rem; }
    .pf-hero-meta { gap: 1.25rem; font-size: 0.7rem; }
    .pf-grid { grid-template-columns: 1fr; }
    .pf-card, .pf-card-large, .pf-card-square { grid-column: span 1; flex-direction: column; }
    .pf-card[data-cat="branding"]:not(.pf-card-large):nth-of-type(odd),
    .pf-card[data-cat="branding"]:not(.pf-card-large):nth-of-type(even) {
        grid-column: span 1;
    }
    .pf-card-large .pf-card-media { min-height: 220px; }
    .pf-card-large .pf-card-body { padding: 1.5rem; }
    .pf-tab { padding: 0.6rem 1rem; font-size: 0.85rem; }
}

@media (prefers-reduced-motion: reduce) {
    .pf-card, .pf-card-glyph, .pf-card-arrow, .pf-tab, .pf-tab-indicator {
        animation: none !important;
        transition: none !important;
    }
}