/* =========================================================
   Portfolio page — catalog of case studies
   Scoped under .nx-portfolio-page / .nx-pf-*
   Reuses homepage .nx-portfolio card chrome from section4.css
   ========================================================= */

.nx-portfolio-page {
    --nx-bg: #07080A;
    --nx-surface: #0D0F12;
    --nx-text: #F5F7FA;
    --nx-text-muted: #9299A5;
    --nx-border: rgba(255, 255, 255, 0.08);
    --nx-accent: #4F7CFF;
    --nx-content: 1320px;
    --nx-pad: clamp(1.25rem, 4vw, 4rem);
    background: var(--nx-bg);
    color: var(--nx-text);
    overflow-x: clip;
}

body.nx-portfolio-page {
    background: var(--nx-bg);
    color: var(--nx-text);
}

body.nx-portfolio-page h1,
body.nx-portfolio-page h2,
body.nx-portfolio-page h3 {
    color: var(--nx-text);
}

.nx-portfolio-page .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---------- Hero ---------- */
.nx-pf-hero {
    position: relative;
    isolation: isolate;
    background: var(--nx-bg);
    padding: clamp(6.5rem, 12vh, 8.5rem) 0 clamp(2.5rem, 6vh, 3.5rem);
    overflow-x: clip;
}

.nx-pf-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(ellipse 46% 38% at 78% 28%, rgba(79, 124, 255, 0.12), transparent 68%);
}

.nx-pf-hero__inner {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: var(--nx-content);
    margin: 0 auto;
    padding-left: var(--nx-pad);
    padding-right: var(--nx-pad);
}

.nx-pf-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    margin: 0 0 1.25rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--nx-text-muted);
}

.nx-pf-hero__eyebrow-accent { color: var(--nx-accent); }

.nx-pf-hero__title {
    margin: 0 0 1.25rem;
    max-width: 14ch;
    font-family: var(--font-display, 'Syne', sans-serif);
    font-weight: 700;
    font-size: clamp(2.55rem, 5.6vw, 4.85rem);
    line-height: 0.98;
    letter-spacing: -0.04em;
}

.nx-pf-hero__lede {
    margin: 0 0 1.75rem;
    max-width: 36rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: clamp(1rem, 1.4vw, 1.12rem);
    line-height: 1.65;
    color: var(--nx-text-muted);
}

.nx-pf-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nx-pf-hero__meta li {
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--nx-border);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--nx-text-muted);
}

/* ---------- Filters ---------- */
.nx-pf-filters {
    position: sticky;
    top: calc(var(--nx-nav-h-scrolled, 64px) + var(--nx-banner-h, 0px));
    z-index: 20;
    background: rgba(7, 8, 10, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--nx-border);
}

.nx-pf-filters__inner {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    width: 100%;
    max-width: var(--nx-content);
    margin: 0 auto;
    padding: 0.85rem var(--nx-pad);
}

.nx-pf-filter {
    min-height: 40px;
    padding: 0.45rem 0.95rem;
    border: 1px solid var(--nx-border);
    border-radius: 999px;
    background: transparent;
    color: var(--nx-text-muted);
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.86rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.nx-pf-filter:hover {
    color: var(--nx-text);
    border-color: rgba(79, 124, 255, 0.35);
}

.nx-pf-filter.is-active {
    background: var(--nx-accent);
    border-color: var(--nx-accent);
    color: #fff;
}

.nx-pf-filter:focus-visible {
    outline: 2px solid var(--nx-accent);
    outline-offset: 3px;
}

/* ---------- Catalog ---------- */
.nx-portfolio-page .nx-portfolio {
    border-top: 0;
    padding-top: clamp(2.5rem, 6vh, 3.75rem);
}

.nx-portfolio-page .nx-portfolio__item.is-hidden {
    display: none;
}

.nx-portfolio-page .nx-portfolio__grid:not(:has(.nx-portfolio__item:not(.is-hidden))) {
    display: none;
    margin: 0;
}

.nx-pf-empty {
    display: none;
    margin: 0;
    padding: 2rem 0 1rem;
    color: var(--nx-text-muted);
    font-size: 1rem;
}

.nx-pf-empty.is-visible { display: block; }

.nx-pf-note {
    margin: clamp(2.5rem, 6vw, 3.5rem) 0 0;
    max-width: 36rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--nx-border);
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--nx-text-muted);
}

.nx-pf-note strong {
    display: block;
    margin-bottom: 0.35rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--nx-accent);
}

/* ---------- Close CTA ---------- */
.nx-pf-cta {
    position: relative;
    background: var(--nx-bg);
    border-top: 1px solid var(--nx-border);
    padding: clamp(4.5rem, 10vh, 7.5rem) 0;
    overflow: hidden;
}

.nx-pf-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(79, 124, 255, 0.08), transparent 70%);
}

.nx-pf-cta__inner {
    position: relative;
    width: 100%;
    max-width: 42rem;
    margin: 0 auto;
    padding: 0 var(--nx-pad);
}

.nx-pf-cta__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    margin: 0 0 1.15rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--nx-text-muted);
}

.nx-pf-cta__eyebrow span { color: var(--nx-accent); }

.nx-pf-cta h2 {
    margin: 0 0 1rem;
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: clamp(2.15rem, 4.4vw, 3.6rem);
    line-height: 1.04;
    letter-spacing: -0.035em;
}

.nx-pf-cta p {
    margin: 0 0 1.75rem;
    color: var(--nx-text-muted);
    font-size: 1.02rem;
    line-height: 1.65;
}

.nx-pf-cta__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem 1.5rem;
}

.nx-pf-cta__primary {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 48px;
    padding: 0.85rem 1.35rem;
    border-radius: 999px;
    background: var(--nx-accent);
    color: #fff;
    font-weight: 600;
    text-decoration: none;
}

.nx-pf-cta__primary:hover { background: #6B8FFF; }

.nx-pf-cta__secondary {
    color: var(--nx-text);
    font-weight: 500;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.nx-pf-cta__primary:focus-visible,
.nx-pf-cta__secondary:focus-visible {
    outline: 2px solid var(--nx-accent);
    outline-offset: 3px;
}

/* ---------- Reveal ---------- */
.nx-portfolio-page .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.nx-portfolio-page .reveal.is-visible {
    opacity: 1;
    transform: none;
}

@media (max-width: 700px) {
    .nx-pf-filter {
        min-height: 44px;
        padding: 0.6rem 1rem;
    }
}

/* ---------- Coming Soon Card ---------- */
.nx-portfolio__card--coming-soon {
    position: relative;
}
.nx-portfolio__card-link--disabled {
    pointer-events: none;
    cursor: default;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}
.nx-portfolio__coming-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .75rem;
    padding: 2.5rem 1rem;
    background: #0d1117;
    border-radius: 14px;
}
.nx-portfolio__coming-logo {
    display: block;
    max-width: 180px;
    height: auto;
    mix-blend-mode: lighten;
}
.nx-portfolio__coming-badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .4rem 1rem;
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #00d4c8;
    background: rgba(0, 212, 200, .1);
    border: 1px solid rgba(0, 212, 200, .25);
    border-radius: 100px;
}
.nx-portfolio__coming-badge--glow {
    box-shadow:
        0 0 8px rgba(0, 212, 200, .35),
        0 0 24px rgba(0, 212, 200, .15),
        0 0 48px rgba(0, 212, 200, .08);
    animation: comingSoonPulse 2.4s ease-in-out infinite;
}
@keyframes comingSoonPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(0,212,200,.35), 0 0 24px rgba(0,212,200,.15), 0 0 48px rgba(0,212,200,.08); }
    50%      { box-shadow: 0 0 12px rgba(0,212,200,.55), 0 0 32px rgba(0,212,200,.3), 0 0 64px rgba(0,212,200,.15); }
}

@media (prefers-reduced-motion: reduce) {
    .nx-portfolio-page .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}