/* ============================================
   DROPFRAME - Portfolio Styles (2026 Redesign)
   ============================================ */

/* Page Header */
.page-header {
    padding: calc(var(--header-height) + 6rem) 0 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    opacity: 0.4;
    z-index: -1;
    pointer-events: none;
}

.page-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-description {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Filter Tabs */
.filter-section {
    padding: 2rem 0;
    position: sticky;
    top: var(--header-height);
    background: rgba(26, 22, 20, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 90;
    border-bottom: 1px solid var(--border-color);
    margin-top: 20px;
}

[data-theme="light"] .filter-section {
    background: rgba(250, 246, 241, 0.8);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-btn {
    padding: 0.75rem 2rem;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.filter-btn:hover {
    transform: translateY(-2px);
    color: var(--text-primary);
    border-color: var(--accent);
    background: var(--bg-secondary);
}

.filter-btn.active {
    color: var(--text-on-accent);
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 5px 15px var(--accent-glow);
}

/* Portfolio Sections */
.portfolio-section {
    padding: 4rem 0 8rem;
}

.portfolio-section.hidden {
    display: none;
}

/* ===== PHOTO GRID ===== */
.photo-grid {
    columns: 3;
    column-gap: 1.5rem;
}

.photo-item {
    break-inside: avoid;
    margin-bottom: 1.5rem;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-md);
}

.photo-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.photo-item:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 3px;
}

.photo-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.photo-item:hover img {
    transform: scale(1.03);
}

/* ===== VIDEO GRID ===== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.video-item {
    background: var(--bg-secondary);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.video-embed {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
}

.video-embed img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
}

.video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 68px;
    height: 48px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 2;
    opacity: 0.85;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.video-play-btn:hover {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.video-play-btn svg {
    width: 100%;
    height: 100%;
}

.video-title {
    padding: 1.25rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== DEV GRID ===== */
.dev-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.dev-card {
    background: var(--bg-secondary);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dev-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.dev-card-image {
    height: 200px;
    overflow: hidden;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dev-card-image img {
    max-height: 120px;
    width: auto;
    object-fit: contain;
}

.dev-card-content {
    padding: 2rem;
}

.dev-card-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
    background: var(--accent-glow);
    border-radius: 100px;
    margin-bottom: 1rem;
}

.dev-card-content h3 {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.dev-card-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.dev-card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.dev-card-tech span {
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
}

.dev-card-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ===== LIGHTBOX ===== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(5, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    max-width: 95vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-content img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    background: transparent;
    border-radius: 8px;
    box-shadow: 0 0 50px rgba(0,0,0,0.5);
}

.lightbox-close {
    position: absolute;
    top: -60px;
    right: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
    border: none;
}

.lightbox-close:hover {
    color: var(--accent);
    transform: rotate(90deg);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.lightbox-nav:hover {
    background: var(--accent);
    color: var(--text-on-accent);
    border-color: var(--accent);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-prev { left: -100px; }
.lightbox-next { right: -100px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .photo-grid { columns: 2; }
    .lightbox-prev { left: 20px; }
    .lightbox-next { right: 20px; }
}

@media (max-width: 768px) {
    .filter-tabs { gap: 0.5rem; }
    .filter-btn { padding: 0.5rem 1.5rem; font-size: 0.8rem; }

    .photo-grid { columns: 2; column-gap: 1rem; }
    .photo-item { margin-bottom: 1rem; }

    .video-grid { grid-template-columns: 1fr; }
    .dev-grid { grid-template-columns: 1fr; }

    .lightbox-nav { width: 44px; height: 44px; font-size: 1.5rem; }
    .lightbox-prev { left: 10px; }
    .lightbox-next { right: 10px; }
    .lightbox-close { top: 10px; right: 10px; z-index: 10; background: rgba(0,0,0,0.5); border-radius: 50%; }
}

@media (max-width: 480px) {
    .photo-grid { columns: 1; }
}