:root{--primary: #67C3CC;--primary-dark: #4A9BA3;--secondary: #8B5CF6;--success: #10B981;--danger: #EF4444;--warning: #F59E0B;--dark: #1F2937;--light: #F9FAFB;--border: #E5E7EB;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);color:var(--dark);min-height:100vh;padding-bottom:40px}#status-bar{position:fixed;top:0;left:0;right:0;padding:12px 20px;display:flex;justify-content:space-between;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.2);box-shadow:var(--shadow)}#status-bar.online{background:#10b981f2;color:#fff}#status-bar.offline{background:#ef4444f2;color:#fff}.container{max-width:1200px;margin:70px auto 20px;padding:20px}header{text-align:center;margin-bottom:40px;color:#fff}header h1{font-size:2.5rem;font-weight:700;margin-bottom:10px;text-shadow:2px 2px 4px rgba(0,0,0,.2)}header p{font-size:1.1rem;opacity:.9}.card{background:#fff;border-radius:16px;padding:30px;margin-bottom:24px;box-shadow:var(--shadow-lg);transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-2px);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a}.card h2{color:var(--primary-dark);margin-bottom:20px;font-size:1.5rem;display:flex;align-items:center;gap:10px}.hidden{display:none!important}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--dark);font-size:.95rem}.form-group input{width:100%;padding:12px 16px;border:2px solid var(--border);border-radius:10px;font-size:16px;transition:all .2s;background:var(--light)}.form-group input:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px #67c3cc1a}.button-group{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}.btn{flex:1;min-width:140px;padding:14px 24px;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow)}.btn-secondary{background:var(--secondary);color:#fff}.btn-secondary:hover:not(:disabled){background:#7c3aed;transform:translateY(-1px)}.btn-success{background:var(--success);color:#fff}.btn-success:hover:not(:disabled){background:#059669;transform:translateY(-1px)}#camera-container{position:relative;width:100%;max-height:500px;overflow:hidden;border-radius:12px;background:#000;margin-bottom:20px}#camera-preview,#captured-image{width:100%;display:block;border-radius:12px}progress{width:100%;height:12px;margin:15px 0;border-radius:6px;overflow:hidden;border:none;background:var(--border)}progress::-webkit-progress-bar{background:var(--border);border-radius:6px}progress::-webkit-progress-value{background:linear-gradient(90deg,var(--primary) 0%,var(--secondary) 100%);border-radius:6px}progress::-moz-progress-bar{background:linear-gradient(90deg,var(--primary) 0%,var(--secondary) 100%);border-radius:6px}.message{padding:12px 16px;margin-bottom:12px;border-radius:12px;max-width:80%;word-wrap:break-word;animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.sent{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;margin-left:auto}.message.received{background:var(--light);border:1px solid var(--border)}.message-sender{font-weight:700;font-size:12px;margin-bottom:6px;opacity:.8}.message-time{font-size:11px;opacity:.6;margin-top:6px}#message-container{max-height:400px;overflow-y:auto;margin-bottom:20px;padding:10px;background:var(--light);border-radius:12px}#message-container::-webkit-scrollbar{width:8px}#message-container::-webkit-scrollbar-track{background:var(--border);border-radius:4px}#message-container::-webkit-scrollbar-thumb{background:var(--primary);border-radius:4px}.input-group{display:flex;gap:12px}.input-group input{flex:1;padding:12px 16px;border:2px solid var(--border);border-radius:10px;font-size:16px;transition:border-color .2s}.input-group input:focus{outline:none;border-color:var(--primary)}.queue-item{padding:16px;background:#fef3c7;border-left:4px solid var(--warning);border-radius:10px;margin-bottom:12px}.queue-item progress{height:8px;margin-top:10px}.history-item{display:flex;align-items:center;gap:16px;padding:16px;border-bottom:1px solid var(--border);transition:background .2s}.history-item:hover{background:var(--light)}.history-item:last-child{border-bottom:none}.history-item img{width:80px;height:80px;object-fit:cover;border-radius:10px;box-shadow:var(--shadow)}.notification{position:fixed;bottom:-100px;left:50%;transform:translate(-50%);background:var(--dark);color:#fff;padding:16px 28px;border-radius:12px;transition:bottom .3s;z-index:2000;box-shadow:var(--shadow-lg);font-weight:500}.notification.show{bottom:30px}@media (max-width: 768px){.container{padding:15px}header h1{font-size:2rem}.card{padding:20px}.button-group{flex-direction:column}.btn{width:100%}.message{max-width:90%}}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:40px;height:40px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:20px auto}.typing-indicator{display:inline-block;font-size:1.2em;line-height:1;animation:typing-pulse 1.4s infinite}@keyframes typing-pulse{0%,to{opacity:.3}50%{opacity:1}}.message{animation:fadeIn .3s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-progress{display:flex;align-items:center;gap:8px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-weight:500}