/* =========================================
   Projects Page Styles
   ========================================= */

/* Filter Bar */
.filter-bar {
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
    position: sticky;
    top: var(--header-h);
    z-index: 100;
}

.filter-inner {
    display: flex;
    align-items: center;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.filter-inner::-webkit-scrollbar { display: none; }

.filter-btn {
    font-family: var(--font-condensed);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 1.25rem 2rem;
    color: var(--gray-500);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.filter-btn:hover { color: var(--black); }

.filter-btn.active {
    color: var(--black);
    border-bottom-color: var(--gold);
}

/* Projects Grid */
.projects-listing {
    padding: 5rem 0;
}

.projects-listing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.project-listing-card {
    position: relative;
    overflow: hidden;
    background: var(--black);
    transition: var(--transition);
}

.project-listing-card[data-hidden="true"] {
    display: none;
}

.project-listing-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    display: block;
    transition: transform 0.8s var(--transition), filter 0.4s ease;
    filter: brightness(0.8);
}

.project-listing-card:hover .project-listing-img {
    transform: scale(1.06);
    filter: brightness(0.5);
}

.project-listing-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.4) 70%, transparent 100%);
}

.project-listing-cat {
    font-family: var(--font-condensed);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 0.4rem;
}

.project-listing-name {
    font-family: var(--font-main);
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

.project-listing-loc {
    font-family: var(--font-condensed);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--gray-300);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    opacity: 0;
    transition: opacity var(--transition);
}

.project-listing-card:hover .project-listing-loc { opacity: 1; }

.project-listing-overlay-link {
    position: absolute;
    inset: 0;
    z-index: 1;
}

/* Count */
.filter-count {
    font-family: var(--font-condensed);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    padding: 0.5rem 0;
    margin-bottom: 2rem;
}

/* Empty state */
.projects-empty {
    text-align: center;
    padding: 6rem 2rem;
    display: none;
}

.projects-empty.visible { display: block; }

.projects-empty h3 {
    font-family: var(--font-main);
    font-size: 2rem;
    font-weight: 300;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

/* ---- Project Detail ---- */
.project-detail-cover {
    position: relative;
    height: 70vh;
    min-height: 400px;
    overflow: hidden;
    background: var(--black);
}

.project-detail-cover img,
.project-detail-cover video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.7;
}

.project-detail-cover-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);
}

.project-detail-cover-content {
    position: absolute;
    bottom: 4rem;
    left: 5%;
    right: 5%;
    z-index: 1;
}

.project-detail-cover-content .badge {
    margin-bottom: 1rem;
}

.project-detail-cover-content h1 {
    font-size: clamp(3rem, 6vw, 6rem);
    color: var(--white);
    font-weight: 300;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}

.project-detail-cover-content .location {
    font-family: var(--font-condensed);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-300);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Project Body */
.project-body {
    padding: 6rem 0;
}

.project-body-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 6rem;
    align-items: start;
}

.project-description {
    font-size: 1.05rem;
    font-weight: 300;
    color: var(--gray-700);
    line-height: 1.9;
}

.project-description p { margin-bottom: 1.5rem; }

/* Tech Info Sidebar */
.project-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
}

.tech-info-box {
    background: var(--gray-100);
    padding: 2.5rem;
    margin-bottom: 2rem;
}

.tech-info-title {
    font-family: var(--font-condensed);
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1.5rem;
}

.tech-info-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    gap: 1rem;
}

.tech-info-item:last-child { border-bottom: none; }

.tech-info-key {
    font-family: var(--font-condensed);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-500);
    flex-shrink: 0;
}

.tech-info-val {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--black);
    text-align: right;
}

/* Gallery */
.project-gallery-section {
    background: var(--gray-100);
    padding: 5rem 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.gallery-item {
    overflow: hidden;
    cursor: pointer;
    position: relative;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4/3;
    transition: transform 0.6s var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.06);
}

.gallery-item:nth-child(4n+1) { grid-column: span 2; }
.gallery-item:nth-child(4n+1) img { aspect-ratio: 16/9; }

/* Video Section */
.project-video {
    background: var(--black);
    padding: 5rem 0;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-wrapper iframe,
.video-wrapper video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* Location */
.project-location-section {
    padding: 5rem 0;
}

.map-wrapper {
    height: 400px;
    background: var(--gray-100);
    overflow: hidden;
}

.map-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Responsive Projects */
@media (max-width: 1100px) {
    .projects-listing-grid { grid-template-columns: repeat(2, 1fr); }
    .project-body-grid { grid-template-columns: 1fr; gap: 3rem; }
    .project-sidebar { position: static; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-item:nth-child(4n+1) { grid-column: span 1; }
    .gallery-item:nth-child(4n+1) img { aspect-ratio: 4/3; }
}

@media (max-width: 600px) {
    .projects-listing-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr 1fr; }
    .filter-btn { padding: 1rem 1.25rem; }
}