/* ==========================================================================
   DMAT Portfolio Page — Dedicated Styles
   Integrates with main.css design system variables
   ========================================================================== */

/* ── Portfolio Hero (overrides for this page only) ── */
.portfolio-hero {
    position: relative;
    overflow: hidden;
    padding: 12rem 0 4rem 0;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.portfolio-hero .hero-glow {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.portfolio-hero .hero-glow::before,
.portfolio-hero .hero-glow::after {
    content: "";
    position: absolute;
    border-radius: 9999px;
    filter: blur(120px);
}

.portfolio-hero .hero-glow::before {
    left: 50%;
    top: -10%;
    width: 820px;
    height: 520px;
    transform: translateX(-50%);
    background: rgba(var(--color-primary-rgb), 0.20);
}

.portfolio-hero .hero-glow::after {
    right: 10%;
    top: 20%;
    width: 420px;
    height: 320px;
    background: rgba(var(--color-accent-rgb), 0.18);
}

.portfolio-hero .container {
    position: relative;
    z-index: 1;
}

.portfolio-hero .eyebrow {
    font-size: 0.75rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    font-weight: 600;
    color: #818cf8;
    margin: 0 0 1rem 0;
}

.portfolio-hero .hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin: 0 0 1.5rem 0;
    color: #ffffff;
}

.portfolio-hero .hero-lead {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 42rem;
    margin: 0 0 2rem 0;
    line-height: 1.65;
}

.portfolio-hero .btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* ── Stats Bar ── */
.portfolio-stats {
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: rgba(15, 23, 42, 0.4);
}

.portfolio-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    padding: 2.5rem 0;
}

@media (min-width: 768px) {
    .portfolio-stats-grid {
        grid-template-columns: repeat(4, 1fr);
        justify-items: center;
    }
}

.pf-stat {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.pf-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(var(--color-primary-rgb), 0.12);
    color: var(--color-primary);
    display: grid;
    place-items: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.pf-stat-value {
    font-size: 1.85rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: #ffffff;
}

.pf-stat-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-text-muted);
}

/* ── Section Shared ── */
.portfolio-section {
    padding: 5rem 0;
}

.portfolio-section .eyebrow {
    font-size: 0.75rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    font-weight: 600;
    color: #818cf8;
    margin: 0;
}

.portfolio-section-head {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-top: 0.75rem;
}

@media (min-width: 768px) {
    .portfolio-section-head {
        flex-direction: row;
        align-items: flex-end;
        justify-content: space-between;
    }
}

.portfolio-section-head .pf-h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0.5rem 0 0;
    max-width: 36rem;
    color: #ffffff;
}

.portfolio-section-head .pf-muted {
    max-width: 22rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* ── Filter Pills ── */
.pf-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 2.5rem;
}

.pf-pill {
    border-radius: 9999px;
    padding: 0.55rem 1.15rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--color-border);
    background: rgba(27, 35, 56, 0.4);
    color: var(--color-text-muted);
    transition: all 0.25s ease;
    font-family: var(--font-body);
}

.pf-pill:hover {
    color: var(--color-text);
    border-color: rgba(var(--color-primary-rgb), 0.4);
}

.pf-pill.active {
    background: var(--gradient-hero);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 24px -8px rgba(var(--color-primary-rgb), 0.55);
}

/* ── Portfolio Image Grid ── */
.pf-grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 2.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .pf-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .pf-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pf-card {
    position: relative;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: linear-gradient(180deg, var(--color-surface), rgba(30, 41, 59, 0.6));
    cursor: pointer;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.35s ease,
                border-color 0.35s ease;
    display: flex;
    flex-direction: column;
}

.pf-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 40px -10px rgba(var(--color-primary-rgb), 0.35);
    border-color: rgba(var(--color-primary-rgb), 0.5);
}

.pf-card-media {
    aspect-ratio: 16 / 10;
    position: relative;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.02);
}

.pf-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    display: block;
}

.pf-card:hover .pf-card-media img {
    transform: scale(1.06);
}

.pf-card-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(3, 7, 18, 0.8));
    pointer-events: none;
}

.pf-card-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 2;
    background: rgba(3, 7, 18, 0.7);
    backdrop-filter: blur(6px);
    color: #818cf8;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    border: 1px solid var(--color-border);
    font-weight: 600;
}

.pf-card-body {
    padding: 1.25rem 1.5rem 1.5rem;
}

.pf-card-title {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #ffffff;
}

.pf-card-cta {
    margin-top: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.pf-card-cta span {
    transition: transform 0.25s ease;
}

.pf-card:hover .pf-card-cta span {
    transform: translateX(4px);
}

/* Empty category message */
.pf-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

.pf-empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    opacity: 0.5;
}

/* ── Load More Button ── */
.pf-load-more-wrap {
    text-align: center;
    margin-top: 3rem;
}

.pf-load-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 1px solid rgba(var(--color-primary-rgb), 0.4);
    background: rgba(var(--color-primary-rgb), 0.08);
    color: #ffffff;
    transition: all 0.3s ease;
}

.pf-load-more:hover {
    background: rgba(var(--color-primary-rgb), 0.18);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -8px rgba(var(--color-primary-rgb), 0.4);
}

/* ── CTA Section ── */
.pf-cta {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 3rem 2.5rem;
    text-align: center;
}

@media (min-width: 768px) {
    .pf-cta {
        padding: 4.5rem 3rem;
    }
}

.pf-cta-glow {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.pf-cta-glow::before,
.pf-cta-glow::after {
    content: "";
    position: absolute;
    border-radius: 9999px;
    filter: blur(60px);
}

.pf-cta-glow::before {
    left: -5rem;
    top: -5rem;
    width: 18rem;
    height: 18rem;
    background: rgba(var(--color-primary-rgb), 0.25);
}

.pf-cta-glow::after {
    right: -5rem;
    bottom: -6rem;
    width: 20rem;
    height: 20rem;
    background: rgba(var(--color-accent-rgb), 0.2);
}

.pf-cta > * {
    position: relative;
}

.pf-cta .eyebrow {
    font-size: 0.75rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    font-weight: 600;
    color: #818cf8;
    margin: 0 0 0.75rem 0;
}

.pf-cta .pf-h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0 0 1rem 0;
    color: #ffffff;
}

.pf-cta .pf-muted {
    max-width: 36rem;
    margin: 0 auto 2rem auto;
    color: var(--color-text-muted);
}

.pf-cta .btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

/* btn-gradient style for portfolio page */
.btn-gradient-pf {
    background: var(--gradient-hero);
    color: #fff;
    border-radius: 9999px;
    padding: 0.9rem 1.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 8px 24px -8px rgba(var(--color-primary-rgb), 0.55);
    transition: transform 0.25s ease, filter 0.25s ease, box-shadow 0.25s ease;
    border: 0;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 1rem;
    text-decoration: none;
}

.btn-gradient-pf:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
    box-shadow: 0 14px 40px -10px rgba(var(--color-accent-rgb), 0.6);
    color: #fff;
}

.btn-outline-pf {
    border: 1px solid rgba(var(--color-primary-rgb), 0.5);
    color: var(--color-text);
    border-radius: 9999px;
    padding: 0.85rem 1.6rem;
    font-weight: 500;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1rem;
    text-decoration: none;
}

.btn-outline-pf:hover {
    background: rgba(var(--color-primary-rgb), 0.12);
    border-color: var(--color-primary);
    color: #fff;
}

/* ── Lightbox Modal ── */
.pf-lightbox {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.pf-lightbox.open {
    display: flex;
}

.pf-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(3, 7, 18, 0.88);
    backdrop-filter: blur(12px);
    cursor: pointer;
}

.pf-lightbox-content {
    position: relative;
    max-width: 1000px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    animation: pfFadeIn 0.3s ease;
}

@keyframes pfFadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.pf-lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 30px 90px -20px rgba(0, 0, 0, 0.7);
    border: 1px solid var(--color-border);
}

.pf-lightbox-title {
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 700;
    text-align: center;
}

.pf-lightbox-category {
    color: var(--color-secondary);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-weight: 600;
}

.pf-lightbox-close {
    position: absolute;
    top: -2rem;
    right: 0;
    width: 40px;
    height: 40px;
    border-radius: 9999px;
    border: 1px solid var(--color-border);
    background: rgba(3, 7, 18, 0.7);
    color: #fff;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    transition: border-color 0.2s;
    display: grid;
    place-items: center;
}

.pf-lightbox-close:hover {
    border-color: var(--color-primary);
}

/* Lightbox navigation arrows */
.pf-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 9999px;
    border: 1px solid var(--color-border);
    background: rgba(3, 7, 18, 0.7);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.25s ease;
    display: grid;
    place-items: center;
    z-index: 10;
}

.pf-lightbox-nav:hover {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.15);
}

.pf-lightbox-prev {
    left: -3.5rem;
}

.pf-lightbox-next {
    right: -3.5rem;
}

@media (max-width: 1100px) {
    .pf-lightbox-prev {
        left: 0.5rem;
    }
    .pf-lightbox-next {
        right: 0.5rem;
    }
}

/* ── Scroll Reveal ── */
.pf-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.pf-reveal.in {
    opacity: 1;
    transform: none;
}