:root{--bg-color: #ffffff;--text-color: #111111;--accent-color: #e5e5e5;--highlight-color: #000000;--brand-accent: #4F46E5;--font-main: "Inter", sans-serif;--whatsapp-green: #25D366}#app{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column}.tab-btn.active{opacity:1;font-weight:600;border-bottom-color:var(--brand-accent);color:var(--brand-accent)}.lecture-card{border:1px solid var(--accent-color);border-left:4px solid var(--accent-color);border-radius:8px;padding:1.5rem;margin-bottom:1.5rem;background:#ffffff80;transition:all .2s ease}.lecture-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #4f46e51a;background:#ffffffe6;border-color:var(--brand-accent);border-left-color:var(--brand-accent)}.btn-small{font-size:.85rem;padding:.5rem 1rem;border-radius:4px;text-decoration:none;border:1px solid var(--brand-accent);color:var(--brand-accent);background:transparent;cursor:pointer;transition:all .2s ease;font-weight:500}.btn-small:hover{background:var(--brand-accent);color:#fff;box-shadow:0 2px 8px #4f46e54d}body{margin:0;padding:0;background-color:var(--bg-color);color:var(--text-color);font-family:var(--font-main);line-height:1.6;overflow-x:hidden}#bg-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;pointer-events:none;opacity:.4;mix-blend-mode:multiply}h1,h2,h3{font-weight:300;letter-spacing:-.05em;margin-bottom:1rem}h1{font-size:4rem;line-height:1.1}h2{font-size:2.5rem;margin-top:4rem;border-bottom:1px solid var(--accent-color);padding-bottom:1rem}a{color:var(--text-color);text-decoration:none;border-bottom:1px solid var(--accent-color);transition:all .3s ease}a:hover{border-bottom-color:var(--highlight-color);opacity:.8}nav.tabs{display:flex;justify-content:center;align-items:center;gap:1rem;margin-top:2rem;margin-bottom:2rem;border-bottom:1px solid var(--accent-color);flex-wrap:wrap;position:sticky;top:0;z-index:100;background:#fffffff2;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);padding:0 1rem;max-width:1800px;margin-left:auto;margin-right:auto;width:100%;box-sizing:border-box}.tab-btn{background:none;border:none;font-family:var(--font-main);font-size:1rem;padding:1rem;cursor:pointer;color:var(--text-color);opacity:.5;transition:all .3s ease;border-bottom:2px solid transparent}.tab-btn-icon{background:none;border:none;cursor:pointer;color:var(--text-color);opacity:.5;transition:all .3s ease;padding:.5rem;display:flex;align-items:center;justify-content:center}.tab-btn:hover,.tab-btn-icon:hover{opacity:1}.tab-btn.active{opacity:1;font-weight:600;color:var(--brand-accent);border-bottom-color:var(--brand-accent)}.tab-content{display:none;animation:fadeIn .5s ease}.tab-content.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}section{margin-bottom:6rem}.content-container{max-width:1800px;width:100%;margin:0 auto;padding:0 1rem;box-sizing:border-box}#about section,#work section,#contact section,header.content-container{max-width:800px;margin-left:auto;margin-right:auto}#content section{max-width:100%}.content-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:2rem;margin-top:2rem}.content-card{border:1px solid var(--accent-color);border-left:4px solid var(--brand-accent);border-radius:8px;background:#ffffffd9;transition:all .2s ease;overflow:hidden;display:flex;flex-direction:column}.content-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #4f46e51a;background:#ffffffe6;border-color:var(--brand-accent)}.card-media{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;background:#000}.card-media iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0}.card-media.video-facade{cursor:pointer;position:relative}.video-thumbnail{position:absolute;top:0;left:0;width:100%;height:100%;background-size:cover;background-position:center;transition:opacity .3s}.video-facade:hover .video-thumbnail{opacity:.9}.play-button{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:#000000b3;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;transition:all .2s ease;pointer-events:none}.video-facade:hover .play-button{background:var(--brand-accent);transform:translate(-50%,-50%) scale(1.1)}.video-facade.playing .video-thumbnail,.video-facade.playing .play-button{display:none}.card-body{padding:1.5rem;flex:1;display:flex;flex-direction:column}.card-type{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--brand-accent);margin-bottom:.5rem;font-weight:600}.card-title{font-weight:600;font-size:1.1rem;margin-bottom:.5rem;line-height:1.4}.card-desc{font-size:.9rem;opacity:.7;margin-bottom:1rem;flex:1}.content-card.type-video{border-left-color:#ef4444}.content-card.type-lecture{border-left-color:#3b82f6}.content-card.type-code{border-left-color:#10b981}.content-card.type-video:hover{border-color:#ef4444}.content-card.type-lecture:hover{border-color:#3b82f6}.content-card.type-code:hover{border-color:#10b981}.card-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}.tag{font-size:.7rem;background:#0000000d;padding:.2rem .6rem;border-radius:12px;color:var(--text-color);opacity:.8;font-weight:500;border:1px solid transparent;text-transform:capitalize}.tag.tag-introduction{background:#3b82f61a;color:#2563eb}.tag.tag-advanced{background:#ef44441a;color:#dc2626}.tag.tag-code{background:#10b9811a;color:#059669}.card-actions{display:flex;gap:1rem;margin-top:auto}.filter-btn{background:transparent;border:1px solid var(--accent-color);padding:.5rem 1.25rem;border-radius:20px;font-family:var(--font-main);font-size:.9rem;cursor:pointer;transition:all .2s ease;color:var(--text-color);opacity:.7}.filter-btn:hover{border-color:var(--brand-accent);opacity:1;color:var(--brand-accent)}.filter-btn.active{background:var(--brand-accent);border-color:var(--brand-accent);color:#fff;opacity:1}.btn{display:inline-block;padding:1rem 2rem;background:var(--text-color);color:var(--bg-color);border-radius:4px;font-weight:600;margin-top:1rem;border:none;cursor:pointer}.logo-slider{overflow:hidden;padding:2rem 0;background:transparent;white-space:nowrap;position:relative;cursor:grab;touch-action:pan-y;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.logo-slider.grabbing{cursor:grabbing}.logo-slider::-webkit-scrollbar{display:none}.logo-slider:before,.logo-slider:after{position:absolute;top:0;width:100px;height:100%;content:"";z-index:2;pointer-events:none}.logo-slider:before{left:0;background:linear-gradient(to right,var(--bg-color),transparent)}.logo-slider:after{right:0;background:linear-gradient(to left,var(--bg-color),transparent)}.logo-slide-track{display:inline-block;will-change:transform}.logo-slide{display:inline-block;margin:0 3rem;opacity:.9;vertical-align:middle}.logo-slide img{vertical-align:middle;transition:opacity .3s ease;pointer-events:none;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}@keyframes scroll{0%{transform:translate(0)}to{transform:translate(-50%)}}body.dark-mode{--bg-color: #111111;--text-color: #ffffff;--accent-color: #333333;--highlight-color: #ffffff}body.dark-mode p,body.dark-mode h1,body.dark-mode h2,body.dark-mode h3,body.dark-mode li,body.dark-mode span,body.dark-mode div,body.dark-mode a{color:var(--text-color)}body.dark-mode #bg-canvas{opacity:1;mix-blend-mode:normal}body.dark-mode nav.tabs{background:#111111f2;border-bottom-color:var(--accent-color)}body.dark-mode .lecture-card,body.dark-mode .content-card{background:#1e1e1ed9}body.dark-mode .lecture-card:hover,body.dark-mode .content-card:hover{background:#1e1e1ef2}body.dark-mode .logo-slide img{background:#ffffffe6;padding:.5rem;border-radius:4px}body.dark-mode .card-title,body.dark-mode .card-desc,body.dark-mode .lecture-title,body.dark-mode .lecture-desc{color:var(--text-color)}body.dark-mode .card-desc,body.dark-mode .lecture-desc{opacity:.8}.btn{display:inline-block;padding:1rem 2rem;background:var(--text-color);color:var(--bg-color);border-radius:4px;font-weight:600;margin-top:1rem;border:none;cursor:pointer;transition:all .2s ease}.btn-whatsapp{background-color:var(--whatsapp-green);color:#fff}.btn-whatsapp.btn:hover{background:#333;color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px #25d3664d}#nerd-note{position:relative;display:inline-block;cursor:help}#nerd-note-tooltip{visibility:hidden;width:300px;background-color:var(--text-color);color:var(--bg-color);text-align:center;border-radius:6px;padding:.8rem;position:absolute;z-index:1000;bottom:135%;left:50%;transform:translate(-50%);opacity:0;transition:opacity .3s;font-family:var(--font-main);font-size:.85rem;font-weight:400;line-height:1.4;box-shadow:0 4px 12px #00000026;pointer-events:none;border:1px solid var(--accent-color)}#nerd-note-tooltip:after{content:"";position:absolute;top:100%;left:50%;margin-left:-5px;border-width:5px;border-style:solid;border-color:var(--text-color) transparent transparent transparent}body.dark-mode #nerd-note-tooltip{background-color:#333;color:#fff;border-color:#555}body.dark-mode #nerd-note-tooltip:after{border-color:#333 transparent transparent transparent}#nerd-note:hover #nerd-note-tooltip{visibility:visible;opacity:1}