:root{--bg: #09090b;--surface: #18181b;--surface-hover: #1f1f23;--border: #27272a;--text: #fafafa;--text-secondary: #a1a1aa;--text-muted: #52525b;--accent: #f59e0b;--accent-hover: #d97706;--accent-soft: rgba(245, 158, 11, .1);--accent-glow: rgba(245, 158, 11, .15);--danger: #ef4444;--success: #22c55e;--radius: 12px;--radius-sm: 8px;--font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", "Fira Code", "Cascadia Code", "Consolas", monospace}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh;min-height:100dvh;display:flex;justify-content:center;align-items:center;overflow:hidden}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at 50% 0%,var(--accent-glow) 0%,transparent 60%);pointer-events:none}#app{width:100%;max-width:460px;padding:24px;display:flex;flex-direction:column;min-height:100vh;min-height:100dvh}header{display:flex;justify-content:space-between;align-items:center;padding-bottom:48px}.logo{font-family:var(--font-mono);font-size:22px;font-weight:700;letter-spacing:-.5px;color:var(--text)}.logo-dot{color:var(--accent)}.device-info{display:flex;align-items:center;gap:6px;color:var(--text-muted);font-size:13px}.icon-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;display:flex;align-items:center;transition:color .15s}.icon-btn:hover{color:var(--text-secondary)}.name-edit-input{background:var(--surface);border:1px solid var(--border);color:var(--text);font-size:13px;padding:2px 6px;border-radius:4px;outline:none;width:120px;font-family:var(--font-sans)}main{flex:1;display:flex;flex-direction:column;justify-content:center}.state{display:none}.state.active{display:flex;flex-direction:column;align-items:center;gap:24px;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.btn-primary{background:var(--accent);color:var(--bg);border:none;padding:10px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;transition:background .15s;display:inline-flex;align-items:center;gap:8px;font-family:var(--font-sans)}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border);padding:10px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;display:inline-flex;align-items:center;gap:8px;font-family:var(--font-sans)}.btn-secondary:hover{background:var(--surface-hover);border-color:var(--text-muted)}.btn-ghost{background:none;color:var(--text-secondary);border:none;padding:10px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;cursor:pointer;transition:color .15s;font-family:var(--font-sans)}.btn-ghost:hover{color:var(--text)}.btn-lg{padding:14px 36px;font-size:16px;border-radius:var(--radius)}.landing{display:flex;flex-direction:column;align-items:center;text-align:center;gap:24px}.hero-title{font-size:40px;font-weight:700;letter-spacing:-1px;line-height:1.15;color:var(--text)}.hero-accent{color:var(--accent)}.hero-subtitle{font-size:16px;color:var(--text-secondary);line-height:1.5;max-width:340px}.steps{display:flex;gap:32px;margin-top:16px}.step{display:flex;flex-direction:column;align-items:center;gap:10px}.step-number{width:32px;height:32px;border-radius:50%;background:var(--surface);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:var(--accent);font-family:var(--font-mono)}.step p{font-size:13px;color:var(--text-secondary)}.landing-footer{font-size:12px;color:var(--text-muted);margin-top:16px}.room-code-container{text-align:center}.room-label{font-size:13px;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}.room-code{font-family:var(--font-mono);font-size:36px;font-weight:700;letter-spacing:-1px;color:var(--text);margin-bottom:20px}.waiting-indicator{display:flex;align-items:center;gap:10px;color:var(--text-secondary);font-size:14px}.pulse-dot{width:8px;height:8px;background:var(--accent);border-radius:50%;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.4;transform:scale(.9)}50%{opacity:1;transform:scale(1.1)}}.qr-container{background:var(--surface);border:1px solid var(--border);padding:12px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center}#qr-canvas{display:block;border-radius:4px}.divider{width:100%;display:flex;align-items:center;gap:16px;color:var(--text-muted);font-size:13px}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--border)}.join-other{width:100%}.join-input-group{display:flex;gap:8px}.join-input-group input{flex:1;background:var(--surface);border:1px solid var(--border);color:var(--text);padding:10px 16px;border-radius:var(--radius-sm);font-size:14px;font-family:var(--font-mono);outline:none;transition:border-color .15s}.join-input-group input::placeholder{color:var(--text-muted)}.join-input-group input:focus{border-color:var(--accent)}.peer-info{display:flex;align-items:center;gap:10px}.peer-status{width:10px;height:10px;background:var(--success);border-radius:50%;box-shadow:0 0 8px #22c55e66}.peer-name{font-size:18px;font-weight:600}.room-badge{font-family:var(--font-mono);font-size:12px;color:var(--text-muted);background:var(--surface);padding:4px 10px;border-radius:20px;border:1px solid var(--border)}.drop-zone{width:100%;border:2px dashed var(--border);border-radius:var(--radius);padding:64px 32px;text-align:center;cursor:pointer;transition:all .2s ease;display:flex;flex-direction:column;align-items:center;gap:16px}.drop-zone:hover{border-color:var(--text-muted);background:var(--surface)}.drop-zone.dragover{border-color:var(--accent);background:var(--accent-soft);border-style:solid}.drop-zone.disabled{opacity:.5;pointer-events:none}.drop-icon{color:var(--text-muted);transition:color .2s}.drop-zone:hover .drop-icon{color:var(--text-secondary)}.drop-zone.dragover .drop-icon{color:var(--accent)}.drop-zone p{color:var(--text-secondary);font-size:15px}.drop-text-mobile{display:none}.file-browse{color:var(--accent);cursor:pointer;font-weight:500}.file-browse:hover{text-decoration:underline}.leave-btn{margin-top:1rem;color:var(--text-muted)}.leave-btn:hover{color:var(--danger)}.transfer-request{text-align:center;display:flex;flex-direction:column;align-items:center;gap:20px}.request-icon{color:var(--accent)}.request-text{font-size:16px;color:var(--text-secondary)}.request-text strong{color:var(--text)}.file-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px 24px;display:flex;flex-direction:column;gap:4px;width:100%;max-width:320px}.file-name{font-weight:600;font-size:15px;word-break:break-all}.file-size{font-size:13px;color:var(--text-muted)}.request-actions{display:flex;gap:12px}.transfer-progress{width:100%;display:flex;flex-direction:column;align-items:center;gap:24px}.awaiting-response{display:flex;align-items:center;gap:10px;color:var(--text-secondary);font-size:14px}.progress-area{width:100%;display:flex;flex-direction:column;gap:12px}.progress-bar{width:100%;height:6px;background:var(--surface);border-radius:3px;overflow:hidden}.progress-fill{height:100%;width:0%;background:var(--accent);border-radius:3px;transition:width .15s ease}.progress-stats{width:100%;display:flex;justify-content:space-between;font-size:14px;font-family:var(--font-mono)}#progress-percent{color:var(--text);font-weight:600}#progress-speed{color:var(--text-muted)}.transfer-complete{text-align:center;display:flex;flex-direction:column;align-items:center;gap:20px}.complete-icon{color:var(--success);animation:scaleIn .3s ease}@keyframes scaleIn{0%{transform:scale(.5);opacity:0}to{transform:scale(1);opacity:1}}#complete-message{font-size:18px;font-weight:600}.toast{position:fixed;bottom:32px;left:50%;transform:translate(-50%) translateY(100px);background:var(--surface);border:1px solid var(--border);padding:10px 20px;border-radius:var(--radius-sm);font-size:14px;color:var(--text-secondary);opacity:0;transition:all .3s ease;pointer-events:none;white-space:nowrap}.toast.show{transform:translate(-50%) translateY(0);opacity:1}button,input,.drop-zone,.file-browse{touch-action:manipulation}@media (max-width: 520px){#app{padding:16px;padding-top:max(16px,env(safe-area-inset-top));padding-bottom:max(16px,env(safe-area-inset-bottom));padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}header{padding-bottom:32px}.room-code{font-size:28px}.drop-zone{padding:48px 24px}.drop-text-desktop{display:none}.drop-text-mobile{display:block}.qr-container{display:none}button{min-height:44px}.request-actions{flex-direction:column;width:100%}.request-actions button{width:100%}.hero-title{font-size:30px}.steps{gap:20px}.btn-lg{width:100%;justify-content:center}}