.app{display:flex;flex-direction:column;min-height:100vh}.app-header{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);color:#fff;padding:1.5rem 0;box-shadow:var(--shadow-md);position:sticky;top:0;z-index:100}.header-content{width:100%;padding:0 1.5rem;display:flex;justify-content:space-between;align-items:center}.header-logo{display:flex;align-items:center;gap:1rem}.logo-icon{width:3rem;height:3rem;flex-shrink:0}.app-header h1{color:#fff;font-size:clamp(1.5rem,4vw,2rem)}@media (max-width: 480px){.logo-icon{width:2.5rem;height:2.5rem}}.app-header .theme-toggle{border-color:#ffffff4d;color:#fff}.app-header .theme-toggle:hover{background-color:#ffffff1a;border-color:#ffffff80}.app-main{flex:1;width:100%;padding:2rem 1.5rem}.home-page{display:flex;flex-direction:column;gap:2rem}.session-list .header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;margin-bottom:2rem}.session-list .header h1{margin:0}.home-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;margin-bottom:1rem}.home-header h2{color:var(--text-primary)}.sessions-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,320px),1fr));gap:1.5rem}.session-card{background-color:var(--surface);border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer;border:1px solid var(--border-color)}.session-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:var(--primary-light)}.session-card-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:1rem}.session-card-date{font-size:.875rem;color:var(--text-secondary);font-weight:500}.session-card-venue{font-size:1.125rem;font-weight:600;color:var(--text-primary);margin-bottom:.5rem}.session-card-info{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border-color)}.session-card-info-item{display:flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--text-secondary)}.session-card-participants{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.75rem}.participant-badge{background-color:var(--primary-color);color:#fff;padding:.25rem .75rem;border-radius:9999px;font-size:.875rem;font-weight:500}.session-form{background-color:var(--surface);border-radius:var(--border-radius);padding:2rem;box-shadow:var(--shadow-md)}.session-form h2{margin-bottom:2rem;color:var(--text-primary)}.session-form form{display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;color:var(--text-primary);font-size:.9375rem}.participant-input{display:flex;gap:.75rem}.participant-input input{flex:1}.participants-list{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.75rem}.participant-tag{display:inline-flex;align-items:center;gap:.5rem;background-color:var(--primary-color);color:#fff;padding:.5rem 1rem;border-radius:9999px;font-size:.9375rem}.participant-tag .remove-button{background:none;border:none;color:#fff;font-size:1.25rem;cursor:pointer;padding:0;width:1.25rem;height:1.25rem;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:var(--transition)}.participant-tag .remove-button:hover{background-color:#fff3}.form-actions{display:flex;gap:1rem;justify-content:flex-end;margin-top:1rem}.session-detail{background-color:var(--surface);border-radius:var(--border-radius);padding:2rem;box-shadow:var(--shadow-md)}.session-detail-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}.session-detail-actions{display:flex;gap:.75rem;flex-wrap:wrap}.session-detail-info{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem;padding:1.5rem;background-color:var(--background);border-radius:var(--border-radius-sm)}.info-item{display:flex;flex-direction:column;gap:.25rem}.info-label{font-size:.875rem;color:var(--text-secondary);font-weight:500}.info-value{font-size:1.125rem;color:var(--text-primary);font-weight:600}.section{margin-top:2rem}.section h3{margin-bottom:1rem;color:var(--text-primary)}.media-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,200px),1fr));gap:1rem}.media-item{position:relative;aspect-ratio:1;border-radius:var(--border-radius-sm);overflow:hidden;background-color:var(--background);border:1px solid var(--border-color);cursor:pointer;transition:var(--transition)}.media-item:hover{box-shadow:var(--shadow-md)}.media-thumbnail{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.media-item img,.media-item video{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;will-change:transform;image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges}.media-item-overlay{position:absolute;top:.5rem;right:.5rem;opacity:0;transition:var(--transition)}.media-item:hover .media-item-overlay{opacity:1}.media-item-overlay .button{padding:.5rem 1rem;font-size:.875rem}.video-thumbnail{position:relative;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background-color:var(--background)}.video-thumbnail video{width:100%;height:100%;object-fit:cover}.video-play-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#0009;border-radius:50%;width:64px;height:64px;display:flex;align-items:center;justify-content:center;pointer-events:none;transition:var(--transition)}.media-item:hover .video-play-icon{background:#000c;transform:translate(-50%,-50%) scale(1.1)}.media-modal{position:fixed;inset:0;background-color:#000000f2;display:flex;align-items:center;justify-content:center;z-index:1000;padding:2rem;animation:fadeIn .2s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{position:relative;width:95vw;height:95vh;display:flex;align-items:center;justify-content:center}.modal-media{display:flex;align-items:center;justify-content:center;width:100%;height:100%;overflow:auto}.modal-media img,.modal-media video{max-width:100%;max-height:100%;border-radius:var(--border-radius-sm);box-shadow:var(--shadow-xl);transition:transform .2s ease}.modal-media img{object-fit:contain}.modal-close{position:absolute;top:1rem;right:1rem;background:#00000080;border:none;color:#fff;font-size:2rem;cursor:pointer;width:2.5rem;height:2.5rem;display:flex;align-items:center;justify-content:center;transition:var(--transition);border-radius:50%;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:10}.modal-close:hover{background:#000000b3;transform:scale(1.1)}.modal-nav{position:absolute;top:50%;transform:translateY(-50%);background:#ffffff1a;border:none;color:#fff;cursor:pointer;width:3rem;height:3rem;display:flex;align-items:center;justify-content:center;transition:var(--transition);border-radius:50%;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:10}.modal-nav:hover{background:#ffffff40;transform:translateY(-50%) scale(1.1)}.modal-nav-prev{left:1rem}.modal-nav-next{right:1rem}.zoom-controls{position:absolute;bottom:1rem;right:1rem;display:flex;gap:.25rem;align-items:center;background-color:#00000080;padding:.25rem;border-radius:var(--border-radius-sm);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:10}.zoom-button{background:transparent;border:none;color:#fff;cursor:pointer;padding:.5rem;border-radius:var(--border-radius-sm);display:flex;align-items:center;justify-content:center;transition:var(--transition);min-width:2rem;height:2rem;font-size:.75rem}.zoom-button.zoom-percent{min-width:3rem;font-weight:500}.zoom-button:hover:not(:disabled){background:#fff3}.zoom-button:disabled{opacity:.3;cursor:not-allowed}.zoom-button svg{width:16px;height:16px}.modal-info{position:absolute;bottom:1rem;left:1rem;background-color:#00000080;color:#fff;padding:.5rem 1rem;border-radius:var(--border-radius-sm);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font-size:.875rem;z-index:10}.modal-info span{color:#fff;font-weight:500}.upload-area{border:2px dashed var(--border-color);border-radius:var(--border-radius);padding:3rem 2rem;text-align:center;cursor:pointer;transition:var(--transition);background-color:var(--background)}.upload-area:hover{border-color:var(--primary-color);background-color:var(--surface)}.upload-area.active{border-color:var(--primary-color);background-color:#2563eb0d}.upload-text{color:var(--text-secondary);margin-top:.5rem}.loading{text-align:center;padding:3rem;color:var(--text-secondary)}.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-secondary)}.empty-state h3{color:var(--text-primary);margin-bottom:1rem}.auth-status{display:flex;align-items:center;gap:.5rem;color:#fff;font-size:.875rem;padding:.5rem 1rem;background:#ffffff1a;border-radius:var(--border-radius-sm)}.auth-prompt-overlay{position:fixed;inset:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:2000;animation:fadeIn .2s ease}.auth-prompt{position:relative;background:var(--surface);border-radius:var(--border-radius);padding:2rem;max-width:400px;width:90%;box-shadow:var(--shadow-xl)}.auth-prompt .modal-close{position:absolute;top:1rem;right:1rem;background:transparent;border:none;color:var(--text-secondary);font-size:2rem;cursor:pointer;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;transition:var(--transition);border-radius:50%;line-height:1}.auth-prompt .modal-close:hover{background:var(--background);color:var(--text-primary)}.auth-prompt h2{margin-top:0;margin-bottom:.5rem;color:var(--text-primary)}.auth-prompt p{color:var(--text-secondary);margin-bottom:1.5rem}.auth-prompt .form-group input{width:100%}.auth-prompt .form-actions{margin-top:1.5rem;justify-content:flex-end}@media (max-width: 768px){.app-main{padding:1.5rem 1rem}.session-form,.session-detail{padding:1.5rem}.home-header{flex-direction:column;align-items:stretch}.form-actions{flex-direction:column-reverse}.form-actions .button{width:100%}.session-detail-header{flex-direction:column;align-items:stretch}.session-detail-actions{width:100%}.session-detail-actions .button{flex:1}}@media (max-width: 480px){.app-header h1{font-size:1.5rem}.sessions-grid{grid-template-columns:1fr}.session-detail-info{grid-template-columns:1fr;gap:1rem}.participant-input{flex-direction:column}}:root{--primary-color: #2563eb;--primary-dark: #1e40af;--primary-light: #3b82f6;--secondary-color: #10b981;--background: #f8fafc;--surface: #ffffff;--text-primary: #1e293b;--text-secondary: #64748b;--border-color: #e2e8f0;--error-color: #ef4444;--error-bg: #fee2e2;--error-text: #991b1b;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--border-radius: 12px;--border-radius-sm: 8px;--transition: all .2s ease}[data-theme=dark]{--primary-color: #3b82f6;--primary-dark: #2563eb;--primary-light: #60a5fa;--secondary-color: #10b981;--background: #0f172a;--surface: #1e293b;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--border-color: #334155;--error-color: #f87171;--error-bg: #450a0a;--error-text: #fca5a5;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .3);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .4), 0 2px 4px -2px rgb(0 0 0 / .4);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .5), 0 4px 6px -4px rgb(0 0 0 / .5);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .6), 0 8px 10px -6px rgb(0 0 0 / .6)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--background);color:var(--text-primary);line-height:1.6}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2;color:var(--text-primary)}h1{font-size:clamp(1.75rem,4vw,2.5rem)}h2{font-size:clamp(1.5rem,3vw,2rem)}h3{font-size:clamp(1.25rem,2.5vw,1.5rem)}a{color:var(--primary-color);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary-dark)}.button{padding:.75rem 1.5rem;border:none;border-radius:var(--border-radius-sm);font-size:1rem;font-weight:500;cursor:pointer;transition:var(--transition);background-color:var(--surface);color:var(--text-primary);border:1px solid var(--border-color)}.button:hover{background-color:var(--background);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.button:active{transform:translateY(0)}.button:disabled{opacity:.6;cursor:not-allowed;transform:none}.button.primary{background-color:var(--primary-color);color:#fff;border:none}.button.primary:hover{background-color:var(--primary-dark)}.button.secondary{background-color:var(--secondary-color);color:#fff;border:none}.button.secondary:hover{background-color:#059669}.button.danger{background-color:var(--error-color);color:#fff;border:none}.button.danger:hover{background-color:#dc2626}input[type=text],input[type=email],input[type=number],input[type=datetime-local],input[type=date],textarea,select{width:100%;padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:var(--border-radius-sm);font-size:1rem;font-family:inherit;background-color:var(--surface);color:var(--text-primary);transition:var(--transition)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #2563eb1a}textarea{resize:vertical;min-height:100px}.card{background-color:var(--surface);border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--shadow-sm);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-md)}.error{color:var(--error-color);font-size:.875rem;margin-top:.25rem;display:block}.error-message{background-color:var(--error-bg);color:var(--error-text);padding:1rem;border-radius:var(--border-radius-sm);margin:1rem 0;border-left:4px solid var(--error-color)}.theme-toggle{background:none;border:1px solid var(--border-color);border-radius:9999px;padding:.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition);color:var(--text-primary);width:2.5rem;height:2.5rem}.theme-toggle:hover{background-color:var(--background);transform:scale(1.05)}.theme-toggle svg{width:1.25rem;height:1.25rem}