:root{font-family:Inter,Segoe UI,Roboto,system-ui,sans-serif;line-height:1.6;font-weight:400;color-scheme:light dark;color:#ffffffe6;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed}#root{max-width:1400px;margin:0 auto;padding:1rem;width:100%;min-height:100vh}.app{display:flex;flex-direction:column;gap:2rem;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed}.header{text-align:center;margin-bottom:2rem;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;padding:2rem;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000001a}.header h1{background:linear-gradient(45deg,#fff,#f0f0f0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0;font-size:3rem;font-weight:700;text-shadow:0 2px 4px rgba(0,0,0,.1)}.header p{color:#fffc;margin:.5rem 0 0;font-size:1.1rem;font-weight:300}.scanner-container{width:100%;max-width:500px;margin:0 auto}.scanner{width:100%;height:300px;border:2px solid #646cff;border-radius:8px;background:#1a1a1a;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.scanner video{width:100%;height:100%;object-fit:cover}.scanner-overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:200px;height:200px;border:2px solid #646cff;border-radius:8px;background:transparent}.scanner-overlay:before{content:"";position:absolute;top:-2px;left:-2px;right:-2px;bottom:-2px;border:2px solid #646cff;border-radius:8px;animation:pulse 2s infinite}@keyframes pulse{0%{opacity:1}50%{opacity:.5}to{opacity:1}}.controls{display:flex;gap:1rem;justify-content:center;margin:2rem 0;flex-wrap:wrap;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;padding:1rem;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000001a}.btn{border-radius:12px;border:1px solid transparent;padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;font-family:inherit;background:#ffffff1a;color:#fff;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;gap:.5rem;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px #0003;border-color:#fff6}.btn:focus,.btn:focus-visible{outline:2px solid rgba(255,255,255,.5);outline-offset:2px}.btn-primary{background:linear-gradient(45deg,#667eea,#764ba2);color:#fff;box-shadow:0 4px 15px #667eea4d}.btn-primary:hover{background:linear-gradient(45deg,#5a6fd8,#6a4190);box-shadow:0 6px 20px #667eea66}.btn-secondary{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2)}.btn-secondary:hover{background:#fff3;border-color:#fff6}.attendance-list{width:100%;max-width:600px;margin:2rem auto}.attendance-item{background:#1a1a1a;border:1px solid #333;border-radius:8px;padding:1rem;margin-bottom:1rem;display:flex;justify-content:space-between;align-items:center}.attendance-info{text-align:left}.attendance-info h3{margin:0 0 .5rem;color:#646cff}.attendance-info p{margin:0;color:#888;font-size:.9rem}.status{padding:.25rem .75rem;border-radius:4px;font-size:.8rem;font-weight:500}.status-success{background-color:#22c55e;color:#fff}.status-error{background-color:#ef4444;color:#fff}.empty-state{text-align:center;color:#888;padding:2rem}.export-controls{display:flex;gap:1rem;justify-content:center;margin-top:1rem}.qr-generator-container{width:100%;max-width:600px;margin:0 auto}.generator-card{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;padding:2rem;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000001a;margin-bottom:2rem}.card-header{text-align:center;margin-bottom:2rem}.card-header .icon{color:#fff;margin-bottom:1rem}.card-header h2{color:#fff;margin:0 0 .5rem;font-size:1.8rem;font-weight:600}.card-header p{color:#ffffffb3;margin:0;font-size:1rem}.generator-form{margin-bottom:2rem}.input-group{margin-bottom:1.5rem}.input-group label{display:block;color:#fff;margin-bottom:.5rem;font-weight:500}.mssv-input{width:100%;padding:1rem;border:2px solid rgba(255,255,255,.2);border-radius:12px;background:#ffffff1a;color:#fff;font-size:1rem;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:all .3s ease}.mssv-input:focus{outline:none;border-color:#fff;box-shadow:0 0 0 3px #fff3}.mssv-input::placeholder{color:#fff9}.generate-btn{width:100%;padding:1rem 2rem;background:linear-gradient(45deg,#667eea,#764ba2);border:none;border-radius:12px;color:#fff;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:.5rem;box-shadow:0 4px 15px #667eea4d}.generate-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #667eea66}.generate-btn:disabled{opacity:.6;cursor:not-allowed}.spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.3);border-top:2px solid #fff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.qr-result{margin-top:2rem}.qr-display{position:relative;display:flex;justify-content:center;margin-bottom:1.5rem}.qr-display img{border-radius:12px;box-shadow:0 8px 32px #0003;max-width:100%}.qr-overlay{position:absolute;bottom:10px;left:50%;transform:translate(-50%);background:#000c;color:#fff;padding:.5rem 1rem;border-radius:6px;font-size:.9rem;font-weight:500}.qr-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.action-btn{display:flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border:none;border-radius:8px;font-weight:500;cursor:pointer;transition:all .3s ease;font-size:.9rem}.action-btn.primary{background:linear-gradient(45deg,#667eea,#764ba2);color:#fff}.action-btn.secondary{background:#fff3;color:#fff;border:1px solid rgba(255,255,255,.3)}.action-btn.tertiary{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2)}.action-btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px #0003}.analytics-dashboard{width:100%;max-width:1200px;margin:0 auto}.dashboard-header{text-align:center;margin-bottom:2rem;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;padding:2rem;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000001a}.dashboard-header h2{color:#fff;margin:0 0 .5rem;font-size:2.2rem;font-weight:600}.dashboard-header p{color:#fffc;margin:0;font-size:1.1rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;padding:1.5rem;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000001a;display:flex;align-items:center;gap:1rem;transition:transform .3s ease}.stat-card:hover{transform:translateY(-4px)}.stat-icon{background:linear-gradient(45deg,#667eea,#764ba2);border-radius:12px;padding:.75rem;color:#fff}.stat-content h3{color:#fff;margin:0;font-size:2rem;font-weight:700}.stat-content p{color:#ffffffb3;margin:0;font-size:.9rem}.charts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem}.chart-card{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;padding:1.5rem;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000001a}.chart-card h3{color:#fff;margin:0 0 1rem;font-size:1.2rem;font-weight:600}.chart-container{height:300px;position:relative}.analytics-empty{text-align:center;padding:4rem 2rem;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000001a}.analytics-empty .empty-icon{color:#ffffff80;margin-bottom:1rem}.analytics-empty h3{color:#fff;margin:0 0 .5rem;font-size:1.5rem}.analytics-empty p{color:#ffffffb3;margin:0}@media (prefers-color-scheme: light){:root{color:#213547;background:linear-gradient(135deg,#667eea,#764ba2)}.scanner{background:#f9f9f9}.attendance-item{background:#f9f9f9;border-color:#e0e0e0}.btn-secondary{background-color:#213547;color:#f9f9f9}.btn-secondary:hover{background-color:#1a1a1a}}