*{margin:0;padding:0;box-sizing:border-box}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:#0a0a0a;color:#fff}.app{min-height:100vh;background:linear-gradient(135deg,#0a0a0a,#1a1a1a);padding:2rem}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh}.login-card{background:#111;border:1px solid #222222;border-radius:16px;padding:3rem;width:100%;max-width:420px;box-shadow:0 20px 60px #00000080}.login-title{font-size:2.5rem;font-weight:700;margin-bottom:.5rem;background:linear-gradient(135deg,#fff,#888);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-subtitle{color:#666;margin-bottom:2rem;font-size:.95rem}.login-form{display:flex;flex-direction:column;gap:1.5rem}.input-group{display:flex;flex-direction:column;gap:.5rem}.input-group label{font-size:.875rem;font-weight:500;color:#999}.input-group input{background:#1a1a1a;border:1px solid #333333;border-radius:8px;padding:.875rem 1rem;color:#fff;font-size:1rem;transition:all .2s}.input-group input:focus{outline:none;border-color:#fff;background:#222}.input-group input::placeholder{color:#555}.input-group input:disabled{opacity:.5;cursor:not-allowed}.error-message{background:#2a1515;border:1px solid #442222;color:#f66;padding:.875rem;border-radius:8px;font-size:.875rem}.login-btn{background:#fff;color:#000;border:none;border-radius:8px;padding:1rem;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;margin-top:.5rem;display:flex;align-items:center;justify-content:center;gap:.5rem}.login-btn:hover:not(:disabled){background:#e0e0e0;transform:translateY(-1px);box-shadow:0 4px 12px #fff3}.login-btn:disabled{opacity:.6;cursor:not-allowed}.spinner{width:16px;height:16px;border:2px solid #333333;border-top-color:#000;border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.login-footer{margin-top:2rem;text-align:center;color:#555;font-size:.75rem}.container{max-width:1400px;margin:0 auto}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:3rem;padding-bottom:1.5rem;border-bottom:1px solid #222222}.header h1{font-size:2rem;font-weight:700;margin-bottom:.25rem}.student-id{color:#666;font-size:.875rem}.header-actions{display:flex;gap:.75rem;align-items:center}.share-btn{background:#1a1a1a;color:#fff;border:1px solid #333333;border-radius:8px;padding:.625rem 1.25rem;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:.5rem}.share-btn:hover{background:#222;border-color:#444}.share-icon{font-size:1rem}.refresh-btn{background:#1a1a1a;color:#fff;border:1px solid #333333;border-radius:8px;padding:.625rem 1.25rem;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:.5rem}.refresh-btn:hover:not(:disabled){background:#222;border-color:#444}.refresh-btn:disabled{opacity:.6;cursor:not-allowed}.refresh-icon{font-size:1.25rem;display:inline-block;transition:transform .3s}.refresh-btn:hover:not(:disabled) .refresh-icon{transform:rotate(180deg)}.logout-btn{background:#1a1a1a;color:#fff;border:1px solid #333333;border-radius:8px;padding:.625rem 1.25rem;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s}.logout-btn:hover{background:#222;border-color:#444}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem;margin-bottom:3rem}.stat-card{background:#111;border:1px solid #222222;border-radius:12px;padding:1.5rem;transition:all .2s}.stat-card:hover{border-color:#333;transform:translateY(-2px);box-shadow:0 8px 24px #0000004d}.stat-header{margin-bottom:1.5rem}.stat-header h3{font-size:1.125rem;font-weight:600;margin-bottom:.5rem;line-height:1.4}.module-code{font-size:.75rem;color:#666;font-family:Courier New,monospace}.attendance-circle{position:relative;width:160px;height:160px;margin:0 auto 1.5rem}.attendance-circle svg{width:100%;height:100%;transform:rotate(-90deg)}.attendance-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}.attendance-percent{font-size:2rem;font-weight:700}.stat-details{display:flex;flex-direction:column;gap:.75rem}.stat-row{display:flex;justify-content:space-between;align-items:center;padding:.75rem;background:#1a1a1a;border-radius:8px}.stat-row span:first-child{color:#999;font-size:.875rem}.stat-value{font-weight:600;color:#fff}.stat-row.warning{background:#2a1515;border:1px solid #442222}.stat-row.warning .stat-value{color:#f66}.stat-row.success{background:#152a1a;border:1px solid #224422}.stat-row.success .stat-value{color:#0f8}.stat-row.danger{background:#3a1515;border:1px solid #552222;animation:pulse 2s infinite}.stat-row.danger span:first-child{color:#f44;font-weight:600}.stat-row.danger .stat-value{color:#f66}.stat-row.info{background:#1a1f2a;border:1px solid #2a3444}.stat-row.info .stat-value{color:#8af}@keyframes pulse{0%,to{border-color:#522}50%{border-color:#722}}.summary{background:#111;border:1px solid #222222;border-radius:12px;padding:2rem}.summary h2{font-size:1.5rem;font-weight:700;margin-bottom:1.5rem}.summary-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.summary-item{display:flex;flex-direction:column;gap:.5rem;padding:1.25rem;background:#1a1a1a;border-radius:8px}.summary-label{color:#666;font-size:.875rem;font-weight:500}.summary-value{font-size:2rem;font-weight:700}@media (max-width: 768px){.app{padding:1rem}.login-card{padding:2rem}.login-title{font-size:2rem}.header{flex-direction:column;align-items:flex-start;gap:1rem}.stats-grid,.summary-stats{grid-template-columns:1fr}}