:root{--bg: #0b1021;--panel: #0f172a;--panel-dark: #080c16;--accent: #7dd3fc;--accent-hover: #38bdf8;--text: #e2e8f0;--muted: #94a3b8;--border: #1f2937;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box;margin:0;padding:0}.studio-body{background:var(--bg);color:var(--text);min-height:100vh}#studio-app{display:flex;flex-direction:column;height:100vh}body.has-nav #studio-app{height:calc(100vh - var(--frame-nav-height, 120px))}.studio-header{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.5rem;background:var(--panel);border-bottom:1px solid var(--border)}.header-left{display:flex;align-items:center}.logo-link{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--text)}.logo-link h1{font-size:1.25rem;letter-spacing:.05em;color:var(--accent)}.badge{background:#7dd3fc26;color:var(--accent);padding:.25rem .5rem;border-radius:6px;font-size:.75rem;font-weight:600}.header-center{flex:1;max-width:400px;margin:0 2rem}.experience-name{width:100%;background:#0000004d;border:1px solid var(--border);border-radius:8px;padding:.5rem 1rem;color:var(--text);font-size:1rem;text-align:center}.experience-name:focus{outline:none;border-color:var(--accent)}.header-right{display:flex;align-items:center;gap:.75rem}.action-btn{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border-radius:8px;font-size:.9rem;cursor:pointer;transition:all .2s ease}.action-btn.secondary{background:transparent;border:1px solid var(--border);color:var(--text)}.action-btn.secondary:hover{border-color:var(--muted);background:#ffffff0d}.action-btn.primary{background:var(--accent);border:none;color:var(--bg);font-weight:600}.action-btn.primary:hover{background:var(--accent-hover)}.action-btn.danger{background:var(--danger);border:none;color:#fff}.icon-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--border);border-radius:8px;color:var(--muted);cursor:pointer;transition:all .2s ease}.icon-btn:hover{border-color:var(--muted);color:var(--text)}.icon-btn.small{width:28px;height:28px}.dropdown{position:relative}.dropdown-menu{position:absolute;top:calc(100% + 4px);right:0;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:.5rem;min-width:180px;z-index:100;box-shadow:0 10px 30px #00000080}.dropdown-menu.hidden{display:none}.dropdown-menu button{display:block;width:100%;padding:.5rem 1rem;background:transparent;border:none;border-radius:6px;color:var(--text);text-align:left;cursor:pointer;font-size:.9rem}.dropdown-menu button:hover{background:#ffffff1a}.dropdown-menu button.danger{color:var(--danger)}.dropdown-menu hr{border:none;border-top:1px solid var(--border);margin:.5rem 0}.studio-main{flex:1;display:grid;grid-template-columns:280px 1fr 320px;gap:1px;background:var(--border);overflow:hidden}.media-library{background:var(--panel);display:flex;flex-direction:column;overflow:hidden}.library-header{display:flex;align-items:center;justify-content:space-between;padding:1rem;border-bottom:1px solid var(--border)}.library-header h3{font-size:.9rem;font-weight:600}.library-tabs{display:flex;padding:.5rem;gap:.25rem;border-bottom:1px solid var(--border)}.lib-tab{flex:1;padding:.5rem;background:transparent;border:none;border-radius:6px;color:var(--muted);font-size:.75rem;cursor:pointer;transition:all .2s ease}.lib-tab:hover{color:var(--text)}.lib-tab.active{background:#7dd3fc1a;color:var(--accent)}.library-status{padding:.25rem .75rem;min-height:1.2rem;font-size:.8rem;color:var(--muted)}.media-grid{flex:1;padding:.75rem;display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;overflow-y:auto;align-content:start}.media-item{background:var(--panel-dark);border:1px solid var(--border);border-radius:8px;overflow:hidden;cursor:grab;transition:all .2s ease}.media-item:hover{border-color:var(--accent)}.media-item.dragging{opacity:.5}.media-thumb{aspect-ratio:16/9;background:var(--bg);background-size:cover;background-position:center;position:relative}.media-type{position:absolute;bottom:4px;right:4px;background:#000000b3;padding:2px 6px;border-radius:4px;font-size:.7rem}.media-title{display:block;padding:.5rem;font-size:.75rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted)}.add-youtube{display:flex;padding:.75rem;gap:.5rem;border-top:1px solid var(--border)}.add-youtube input{flex:1;background:var(--panel-dark);border:1px solid var(--border);border-radius:6px;padding:.5rem;color:var(--text);font-size:.8rem}.add-youtube input:focus{outline:none;border-color:var(--accent)}.empty-message{grid-column:1 / -1;text-align:center;color:var(--muted);padding:2rem}.timeline-section{background:var(--panel-dark);display:flex;flex-direction:column;overflow:hidden}.timeline-toolbar{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:var(--panel);border-bottom:1px solid var(--border)}.chapter-info{display:flex;align-items:center;gap:.5rem;color:var(--muted);font-size:.85rem}.chapter-info select{background:var(--panel-dark);border:1px solid var(--border);border-radius:6px;padding:.25rem .5rem;color:var(--text)}.timeline-actions{display:flex;gap:.5rem}.text-btn{background:transparent;border:none;color:var(--muted);font-size:.85rem;cursor:pointer;padding:.25rem .5rem;border-radius:4px}.text-btn:hover{color:var(--text);background:#ffffff0d}.text-btn.small{font-size:.75rem;padding:.1rem .4rem}.timeline-container{flex:1;padding:1rem;overflow-y:auto}.timeline{display:flex;flex-direction:column;gap:.5rem;min-height:100%}.timeline-dropzone,.timeline-dropzone-mini{display:flex;align-items:center;justify-content:center;border:2px dashed var(--border);border-radius:12px;padding:3rem;color:var(--muted);transition:all .2s ease}.timeline-dropzone.active,.timeline-dropzone-mini.active{border-color:var(--accent);background:#7dd3fc0d}.timeline-dropzone-mini{padding:1rem;margin-top:.5rem}.timeline-item{display:flex;align-items:center;gap:.75rem;padding:.75rem;background:var(--panel);border:1px solid var(--border);border-radius:10px;cursor:grab;transition:all .2s ease}.timeline-item:hover{border-color:var(--muted)}.timeline-item.selected{border-color:var(--accent);background:#7dd3fc0d}.timeline-item.dragging{opacity:.5}.item-thumb{width:48px;height:36px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.item-info{flex:1;min-width:0}.item-title{display:block;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.item-duration{display:block;font-size:.75rem;color:var(--muted)}.item-remove{width:28px;height:28px;background:transparent;border:none;color:var(--muted);font-size:1.2rem;cursor:pointer;border-radius:6px;opacity:0;transition:all .2s ease}.timeline-item:hover .item-remove{opacity:1}.item-remove:hover{background:#ef444433;color:var(--danger)}.timeline-summary{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:var(--panel);border-top:1px solid var(--border);font-size:.85rem;color:var(--muted)}.sep{opacity:.5}.properties-panel{background:var(--panel);display:flex;flex-direction:column;overflow:hidden}.panel-header{padding:1rem;border-bottom:1px solid var(--border)}.panel-header h3{font-size:.9rem;font-weight:600}.props-section{padding:1rem;overflow-y:auto}.props-section.hidden{display:none}.props-section h4{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem;margin-top:1.5rem}.props-section h4:first-child{margin-top:0}.prop-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem;font-size:.85rem}.prop-row.checkbox{justify-content:flex-start;gap:.75rem}.prop-row span:first-child{color:var(--muted)}.prop-row .value{color:var(--text)}.prop-row select,.prop-row input[type=text],.prop-row input[type=number]{background:var(--panel-dark);border:1px solid var(--border);border-radius:6px;padding:.4rem .75rem;color:var(--text);font-size:.85rem;min-width:100px}.prop-row input[type=number]{width:70px;min-width:70px}.prop-row input[type=range]{width:100px;accent-color:var(--accent)}.prop-row input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent)}.props-section .button-row{margin-top:1.5rem}.item-preview{aspect-ratio:16/9;background:var(--panel-dark);border-radius:8px;overflow:hidden;margin-bottom:1rem}.item-preview img,.item-preview video{width:100%;height:100%;object-fit:cover}.item-preview .yt-thumb{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#dc2626,#991b1b);font-size:2rem}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:200;padding:2rem}.modal.hidden{display:none}.modal-content{background:var(--panel);border:1px solid var(--border);border-radius:16px;max-width:800px;width:100%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;border-bottom:1px solid var(--border)}.close-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--muted);font-size:1.5rem;cursor:pointer;border-radius:8px}.close-btn:hover{background:#ffffff1a;color:var(--text)}.library-content{max-width:1000px}.category-tabs{display:flex;gap:.5rem;padding:.75rem 1rem;border-bottom:1px solid var(--border);overflow-x:auto}.tab-btn{padding:.5rem 1rem;background:transparent;border:1px solid transparent;border-radius:8px;color:var(--muted);cursor:pointer;white-space:nowrap;transition:all .2s ease}.tab-btn:hover{color:var(--text)}.tab-btn.active{background:#7dd3fc1a;border-color:var(--accent);color:var(--accent)}.experience-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem;padding:1rem;overflow-y:auto}.experience-card{background:var(--panel-dark);border:1px solid var(--border);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:all .2s ease}.experience-card:hover{border-color:var(--accent);transform:translateY(-2px)}.card-thumb{aspect-ratio:16/9;background-size:cover;background-position:center;position:relative}.lock-icon{position:absolute;top:8px;right:8px;background:#0009;padding:4px 6px;border-radius:6px;font-size:.8rem}.card-info{padding:.75rem 1rem 1rem}.card-info h4{margin-bottom:.25rem}.card-info p{color:var(--muted);font-size:.85rem}.card-actions{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.75rem}.action-btn.small{padding:.35rem .75rem;font-size:.8rem}.preview-content{max-width:900px}.preview-player{aspect-ratio:16/9;background:#000;position:relative}.preview-media{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:contain;display:none;opacity:0;transition:opacity .4s ease,transform .4s ease}.preview-controls{display:flex;align-items:center;justify-content:center;gap:1rem;padding:1rem;border-top:1px solid var(--border)}.control-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:#ffffff1a;border:none;border-radius:50%;color:var(--text);cursor:pointer;transition:all .2s ease}.control-btn:hover{background:#fff3}.control-btn.secondary{border-radius:8px;width:auto;padding:.35rem .75rem}#preview-info{color:var(--muted);font-size:.9rem}@media (max-width: 1024px){.studio-main{grid-template-columns:220px 1fr 280px}}@media (max-width: 768px){.studio-main{grid-template-columns:1fr;grid-template-rows:auto 1fr auto}.media-library,.properties-panel{max-height:200px}.header-center{display:none}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--muted)}