.portfolio-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;position:sticky;top:0;background:var(--color-bg);z-index:100;border-bottom:1px solid transparent;transition:border-color var(--transition-normal)}.back-btn{font-family:var(--font-display);font-size:.85rem;font-weight:700;letter-spacing:.05em;color:var(--color-text);text-decoration:none;border:2px solid var(--color-text);padding:.4rem 1rem;border-radius:50%/40% 60% 50% 50%;transition:all var(--transition-fast);white-space:nowrap;flex-shrink:0}.back-btn:hover{transform:translate(-4px);box-shadow:2px 2px 0 var(--color-text);background:var(--color-text);color:var(--color-bg)}.header-spacer{width:80px;flex-shrink:0}.portfolio-header.scrolled{border-bottom-color:var(--color-gray-200)}.toggle-wrapper{display:flex;align-items:center;gap:1.5rem}.toggle-label{font-family:var(--font-display);font-size:1.5rem;font-weight:900;letter-spacing:.08em;color:var(--color-gray-400);transition:color var(--transition-fast);-webkit-user-select:none;user-select:none}.toggle-label.active{color:var(--color-text)}body.glitch-bg .toggle-label.active{color:var(--color-accent)}.toggle-switch{display:inline-block;position:relative;cursor:pointer}.toggle-switch input{opacity:0;position:absolute;width:1px;height:1px}.toggle-slider{display:block;width:100px;height:52px;background:var(--color-bg);border:3px solid var(--color-text);border-radius:60% 40% 55% 45%/50% 45% 55% 50%;position:relative;transition:background var(--transition-fast),border-color var(--transition-fast)}.toggle-slider:after{content:"";position:absolute;width:36px;height:36px;top:5px;left:6px;background:var(--color-text);border-radius:55% 45% 50% 50%/45% 50% 55% 55%;transition:transform var(--transition-fast),background var(--transition-fast)}input:checked+.toggle-slider:after{transform:translate(48px);background:var(--color-accent)}input:checked+.toggle-slider{border-color:var(--color-accent)}.portfolio-intro{max-width:600px;margin:0 auto;padding:1.5rem 2rem 0;text-align:center;transition:opacity var(--transition-normal)}.portfolio-intro.fading{opacity:0}.portfolio-intro p{font-size:.95rem;line-height:1.7;color:var(--color-gray-600)}.subcat-nav{display:none;justify-content:center;gap:1.5rem;padding:.5rem 1rem 1.5rem}.subcat-nav.visible{display:flex}.subcat-btn{font-family:var(--font-display);font-size:.9rem;font-weight:700;letter-spacing:.05em;color:var(--color-gray-400);background:none;border:none;border-bottom:2px solid transparent;padding:.4rem .2rem;cursor:pointer;transition:all var(--transition-fast)}.subcat-btn:hover{color:var(--color-text)}.subcat-btn.active{color:var(--color-text);border-bottom-color:var(--color-text)}.portfolio-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:2rem;padding:2rem;transition:opacity var(--transition-normal),transform var(--transition-normal)}.portfolio-grid.fading{opacity:0;transform:translateY(8px);pointer-events:none}.grid-item{display:flex;flex-direction:column;cursor:pointer}.grid-item--wide,.grid-item--large{grid-column:span 2}.item-image{position:relative;overflow:hidden;aspect-ratio:4 / 3}.grid-item--tall .item-image{aspect-ratio:3 / 4}.grid-item--large .item-image{aspect-ratio:16 / 9}.item-image img,.item-image video{width:100%;height:100%;object-fit:cover;display:block;transition:filter var(--transition-normal),transform var(--transition-slow)}.grid-item:hover .item-image img,.grid-item:hover .item-image video{transform:scale(1.04)}.grid-item:hover .item-image{box-shadow:0 4px 20px #0000001f}.video-restart{position:absolute;top:.5rem;right:.5rem;z-index:3;width:32px;height:32px;border-radius:50%;border:2px solid #fff;background:#00000080;color:#fff;font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-fast)}.grid-item.video-playing .video-restart,.grid-item:hover .video-restart{opacity:1}.video-restart:hover{background:#fff;color:#000;border-color:#000}.item-info{padding:.75rem .25rem;font-family:var(--font-body)}.item-title{font-family:var(--font-display);font-size:1rem;font-weight:700;letter-spacing:.02em;color:var(--color-text);margin-bottom:.2rem}.item-desc{font-size:.8rem;line-height:1.5;color:var(--color-gray-600);margin-bottom:.15rem}@media(max-width:768px){.portfolio-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1.5rem;padding:1rem}.grid-item--wide,.grid-item--large{grid-column:span 1}.portfolio-header{padding:.75rem 1rem;flex-wrap:wrap;gap:.5rem}.back-btn{font-size:.75rem;padding:.3rem .75rem}.header-spacer{display:none}.portfolio-intro{padding:1rem 1rem 0}.item-title{font-size:.9rem}.item-desc{font-size:.75rem}}