:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--bg-accent: #e2e8f0;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--border-color: #e2e8f0;--border-hover: #cbd5e1;--accent-primary: #6366f1;--accent-hover: #4f46e5;--success: #10b981;--success-hover: #059669;--warning: #f59e0b;--warning-hover: #d97706;--danger: #ef4444;--danger-hover: #dc2626;--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);--blur-bg: rgba(255, 255, 255, .95);--glass-bg: rgba(255, 255, 255, .8);--glass-border: rgba(255, 255, 255, .2)}[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--bg-accent: #475569;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--border-color: #334155;--border-hover: #475569;--accent-primary: #6366f1;--accent-hover: #4f46e5;--success: #10b981;--success-hover: #059669;--warning: #f59e0b;--warning-hover: #d97706;--danger: #ef4444;--danger-hover: #dc2626;--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 / .4), 0 4px 6px -4px rgb(0 0 0 / .4);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .4), 0 8px 10px -6px rgb(0 0 0 / .4);--blur-bg: rgba(15, 23, 42, .95);--glass-bg: rgba(30, 41, 59, .8);--glass-border: rgba(148, 163, 184, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg-primary);color:var(--text-primary);transition:background-color .3s ease,color .3s ease;min-height:100vh;line-height:1.6}.app{min-height:100vh;background:var(--bg-primary);padding:2rem;display:flex;flex-direction:column;align-items:center;position:relative}.app:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 20% 80%,rgba(99,102,241,.03) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(139,92,246,.03) 0%,transparent 50%);pointer-events:none;z-index:-1}.app-header{width:100%;max-width:1200px;display:flex;justify-content:space-between;align-items:center;margin-bottom:3rem;padding:0 1rem}.app-title{display:flex;align-items:center;gap:1rem}.app-title h1{font-size:2.5rem;font-weight:800;color:var(--text-primary);margin:0}.app-icon{width:3rem;height:3rem;background:var(--bg-tertiary);border:2px solid var(--border-color);border-radius:1rem;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);color:var(--accent-primary);font-size:1.5rem;transition:all .3s ease}.app-icon:hover{border-color:var(--accent-primary);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.theme-toggle{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:12px;padding:.75rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-sm);width:3rem;height:3rem;display:flex;align-items:center;justify-content:center;color:var(--text-primary);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.theme-toggle:hover{background:var(--bg-accent);border-color:var(--border-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.theme-toggle:hover{background:var(--bg-accent);border-color:var(--border-hover);box-shadow:var(--shadow-md)}.main-container{width:100%;max-width:800px;background:var(--blur-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-color);border-radius:1.5rem;padding:2.5rem;box-shadow:var(--shadow-xl);position:relative;overflow:hidden}.main-container:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent-primary),transparent)}.room-creation{text-align:center;margin-bottom:2rem}.room-creation h2{font-size:1.875rem;font-weight:700;color:var(--text-primary);margin-bottom:.5rem}.room-creation p{color:var(--text-secondary);margin-bottom:2rem;font-size:1.125rem}.button-group{display:flex;gap:1rem;justify-content:center;margin-bottom:2rem;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.875rem 1.5rem;font-size:.9rem;font-weight:600;border:1px solid transparent;border-radius:.75rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);text-decoration:none;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;min-width:120px;justify-content:center}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.btn-primary{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-accent);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-success{background:var(--success);color:#fff;border-color:var(--success)}.btn-success:hover{background:var(--success-hover);border-color:var(--success-hover)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-danger:hover{background:var(--danger-hover);border-color:var(--danger-hover)}.btn-danger{background:linear-gradient(135deg,var(--danger),#dc2626);color:#fff}.btn-danger:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.input-group{display:flex;gap:.75rem;margin:1.5rem 0;flex-wrap:wrap}.input{flex:1;padding:.875rem 1rem;font-size:1rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:.75rem;color:var(--text-primary);transition:all .3s ease;min-width:200px}.input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #3b82f61a}.input::placeholder{color:var(--text-muted)}.room-info{text-align:center}.room-header{background:var(--bg-secondary);border-radius:1rem;padding:1.5rem;margin-bottom:2rem;border:1px solid var(--border-color)}.room-id-container{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}.room-id{font-size:1.5rem;font-weight:700;color:var(--accent-primary);font-family:JetBrains Mono,Fira Code,monospace;letter-spacing:.05em}.status{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border-radius:.5rem;font-weight:500;font-size:.875rem}.status.connected{background:#10b9811a;color:var(--success);border:1px solid rgba(16,185,129,.2)}.status.disconnected{background:#ef44441a;color:var(--danger);border:1px solid rgba(239,68,68,.2)}.status.connecting{background:#f59e0b1a;color:var(--warning);border:1px solid rgba(245,158,11,.2)}.file-sharing{margin-top:2rem}.file-drop-zone{border:2px dashed var(--border-color);border-radius:1rem;padding:3rem 2rem;text-align:center;transition:all .3s ease;cursor:pointer;background:var(--bg-secondary);margin-bottom:2rem}.file-drop-zone:hover,.file-drop-zone.drag-over{border-color:var(--accent-primary);background:#6366f10d;transform:translateY(-2px);box-shadow:var(--shadow-md)}.drop-icon{width:4rem;height:4rem;margin:0 auto 1.5rem;background:var(--accent-primary);border-radius:1rem;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-lg)}.file-item{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:1rem;padding:1.5rem;margin:1rem 0;transition:all .3s ease}.file-item:hover{box-shadow:var(--shadow-md);border-color:var(--border-hover)}.file-item.sending{border-color:var(--accent-primary);background:#3b82f60d}.file-item.receiving{border-color:var(--warning);background:#f59e0b0d}.file-item.completed{border-color:var(--success);background:#10b9810d}.file-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem;flex-wrap:wrap;gap:1rem}.file-info-content{display:flex;align-items:center;gap:1rem;flex:1}.file-icon{width:2.5rem;height:2.5rem;background:var(--accent-primary);border-radius:.5rem;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:.875rem}.file-details h4{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:.25rem}.file-details p{font-size:.875rem;color:var(--text-secondary)}.progress-container{margin:1rem 0}.progress-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;font-size:.875rem;color:var(--text-secondary)}.progress-bar{width:100%;height:.5rem;background:var(--bg-accent);border-radius:.25rem;overflow:hidden;position:relative}.progress{height:100%;background:linear-gradient(90deg,var(--accent-primary),#3b82f6);border-radius:.25rem;transition:width .3s ease;position:relative}.progress:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:shimmer 2s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.progress.success{background:linear-gradient(90deg,var(--success),#059669)}.progress.warning{background:linear-gradient(90deg,var(--warning),#d97706)}.folder-container{margin-top:1rem}.folder-item{display:flex;align-items:center;gap:.75rem;padding:.75rem;background:var(--bg-tertiary);border-radius:.5rem;margin:.5rem 0;border:1px solid var(--border-color)}.folder-icon{width:1.5rem;height:1.5rem;background:var(--warning);border-radius:.25rem;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.75rem}@media (max-width: 768px){.app{padding:1rem}.main-container{padding:1.5rem}.app-title h1{font-size:2rem}.button-group{flex-direction:column;align-items:center}.btn{width:100%;max-width:300px}.input-group{flex-direction:column}.file-header{flex-direction:column;align-items:stretch}.room-id-container{flex-direction:column;gap:.5rem}}@keyframes slideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.slide-in{animation:slideIn .5s ease-out}.fade-in{animation:fadeIn .3s ease-out}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important}.btn.loading{position:relative;color:transparent}.btn.loading:after{content:"";position:absolute;top:50%;left:50%;margin:-.5rem 0 0 -.5rem;width:1rem;height:1rem;border:2px solid transparent;border-top:2px solid currentColor;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.received-files-section{margin-top:2rem;padding:1.5rem;background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border-color)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;padding-bottom:.75rem;border-bottom:1px solid var(--border-color)}.section-header h3{margin:0;color:var(--text-primary);font-size:1.125rem;font-weight:600}.received-files-section .file-item{margin-bottom:.75rem}.received-files-section .file-item:last-child{margin-bottom:0}.logo-img{width:32px;height:32px;border-radius:8px;object-fit:contain;transition:transform .2s ease}.logo-img:hover{transform:scale(1.05)}.fallback-icon{display:flex;align-items:center;justify-content:center;color:var(--accent-primary)}.btn-secondary{background:var(--bg-accent);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--border-hover);transform:translateY(-1px)}