:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-light: #dbeafe;--color-bg: #ffffff;--color-text: #1f2937;--color-text-muted: #6b7280;--color-border: #e5e7eb;--color-card: #f9fafb;--color-success: #10b981;--color-error: #ef4444;--color-warning: #f59e0b;--color-info: #3b82f6;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--transition-fast: .1s ease;--transition-normal: .2s ease;--transition-slow: .3s ease;--z-dropdown: 1000;--z-modal: 2000;--z-toast: 3000}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:var(--font-size-base, 16px);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:var(--color-text);background-color:var(--color-bg);transition:background-color var(--transition-normal),color var(--transition-normal)}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2;color:var(--color-text);margin-bottom:var(--spacing-md)}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1.125rem}p{margin-bottom:var(--spacing-md)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-hover);text-decoration:underline}#app{min-height:100vh;display:flex;flex-direction:column}#main-content{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:var(--spacing-xl)}.loading{display:flex;justify-content:center;align-items:center;min-height:200px;color:var(--color-text-muted)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.text-center{text-align:center}.text-right{text-align:right}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}@media(prefers-color-scheme:dark){:root{--color-primary: #3b82f6;--color-primary-hover: #60a5fa;--color-primary-light: #1e3a8a;--color-bg: #1f2937;--color-text: #f9fafb;--color-text-muted: #9ca3af;--color-border: #374151;--color-card: #111827;--color-success: #34d399;--color-error: #f87171;--color-warning: #fbbf24;--color-info: #60a5fa}}[data-theme=light]{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-light: #dbeafe;--color-bg: #ffffff;--color-text: #1f2937;--color-text-muted: #6b7280;--color-border: #e5e7eb;--color-card: #f9fafb;--color-success: #10b981;--color-error: #ef4444;--color-warning: #f59e0b;--color-info: #3b82f6}[data-theme=dark]{--color-primary: #3b82f6;--color-primary-hover: #60a5fa;--color-primary-light: #1e3a8a;--color-bg: #1f2937;--color-text: #f9fafb;--color-text-muted: #9ca3af;--color-border: #374151;--color-card: #111827;--color-success: #34d399;--color-error: #f87171;--color-warning: #fbbf24;--color-info: #60a5fa}:root{--font-size-base: 16px}[data-text-size=small]{--font-size-base: 14px}[data-text-size=medium]{--font-size-base: 16px}[data-text-size=large]{--font-size-base: 18px}*:focus{outline:2px solid var(--color-primary);outline-offset:2px}*:focus:not(:focus-visible){outline:none}*:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.skip-to-main{position:absolute;top:-40px;left:0;background:var(--color-primary);color:#fff;padding:var(--spacing-sm) var(--spacing-md);text-decoration:none;z-index:9999}.skip-to-main:focus{top:0}@media(prefers-contrast:high){:root{--color-border: #000000}[data-theme=dark]{--color-border: #ffffff}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}#main-nav{background-color:var(--color-card);border-bottom:1px solid var(--color-border);padding:var(--spacing-md) var(--spacing-xl);position:sticky;top:0;z-index:100}.nav-container{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-lg)}.app-title{font-size:1.5rem;margin:0;color:var(--color-primary)}.nav-links{display:flex;list-style:none;gap:var(--spacing-lg);margin:0;padding:0}.nav-links a{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);transition:background-color var(--transition-fast)}.nav-links a:hover,.nav-links a.active{background-color:var(--color-primary-light);text-decoration:none}.nav-controls{display:flex;align-items:center;gap:var(--spacing-md)}.theme-toggle-btn{background-color:var(--color-card);color:var(--color-text);border:1px solid var(--color-border);padding:var(--spacing-xs) var(--spacing-sm);font-size:1.25rem;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px}.theme-toggle-btn:hover{background-color:var(--color-primary-light);transform:scale(1.1);box-shadow:var(--shadow-sm)}button,.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-sm) var(--spacing-md);font-size:1rem;font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);background-color:var(--color-primary);color:#fff}button:hover:not(:disabled),.btn:hover:not(:disabled){background-color:var(--color-primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}button:disabled,.btn:disabled{opacity:.5;cursor:not-allowed}button.secondary,.btn-secondary{background-color:var(--color-card);color:var(--color-text);border:1px solid var(--color-border)}button.danger,.btn-danger{background-color:var(--color-error)}button.success,.btn-success{background-color:var(--color-success)}input,select,textarea{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-size:1rem;border:1px solid var(--color-border);border-radius:var(--radius-md);background-color:var(--color-bg);color:var(--color-text);transition:border-color var(--transition-fast)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}label{display:block;margin-bottom:var(--spacing-xs);font-weight:500;color:var(--color-text)}.form-group{margin-bottom:var(--spacing-md)}.form-error{color:var(--color-error);font-size:.875rem;margin-top:var(--spacing-xs)}.card{background-color:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}table{width:100%;border-collapse:collapse;margin:var(--spacing-lg) 0}thead{background-color:var(--color-card);border-bottom:2px solid var(--color-border)}th{padding:var(--spacing-md);text-align:left;font-weight:600;color:var(--color-text)}td{padding:var(--spacing-md);border-bottom:1px solid var(--color-border)}tr:hover{background-color:var(--color-card)}.toast{position:fixed;top:var(--spacing-xl);right:var(--spacing-xl);max-width:400px;padding:var(--spacing-md);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:var(--z-toast);animation:slideIn .3s ease}.toast.success{background-color:var(--color-success);color:#fff}.toast.error{background-color:var(--color-error);color:#fff}.toast.info{background-color:var(--color-info);color:#fff}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.spinner{border:3px solid var(--color-border);border-top:3px solid var(--color-primary);border-radius:var(--radius-full);width:40px;height:40px;animation:spin 1s linear infinite;margin:var(--spacing-md) auto}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}#text-size-controls{display:flex;gap:var(--spacing-xs)}#text-size-controls button{padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-card);color:var(--color-text);border:1px solid var(--color-border);min-width:36px}#text-size-controls button.active{background-color:var(--color-primary);color:#fff}#text-small{font-size:.875rem}#text-medium{font-size:1rem}#text-large{font-size:1.125rem}#app-footer{background-color:var(--color-card);border-top:1px solid var(--color-border);padding:var(--spacing-lg);text-align:center;color:var(--color-text-muted);margin-top:auto}.page{max-width:1200px;margin:0 auto;padding:var(--spacing-xl)}.page-header{margin-bottom:var(--spacing-xl)}.page-header-content{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--spacing-lg)}.page-header h1{margin:0 0 var(--spacing-sm) 0;color:var(--color-text)}.page-description{color:var(--color-text-muted);margin:0}@media(max-width:768px){.page-header-content{flex-direction:column;align-items:stretch}.page-header-content button{width:100%}}.page-content{display:grid;grid-template-columns:1fr 2fr;gap:var(--spacing-xl)}@media(max-width:768px){.page-content{grid-template-columns:1fr}}.toast-container{position:fixed;top:var(--spacing-xl);right:var(--spacing-xl);z-index:1000;display:flex;flex-direction:column;gap:var(--spacing-sm)}.toast{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:300px;animation:slideIn .3s ease}.toast-success{background-color:var(--color-success);color:#fff}.toast-error{background-color:var(--color-error);color:#fff}.toast-info{background-color:var(--color-info);color:#fff}.toast-icon{font-size:1.25rem;font-weight:700}.toast-message{flex:1}.toast-close{background:transparent;border:none;color:inherit;font-size:1.5rem;padding:0;width:24px;height:24px;cursor:pointer;opacity:.8}.toast-close:hover{opacity:1;transform:none;box-shadow:none}.toast-fade-out{animation:fadeOut .3s ease}@keyframes fadeOut{to{opacity:0;transform:translate(100%)}}.loading-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:999}.loading-overlay p{color:#fff;margin-top:var(--spacing-md);font-size:1.125rem}.employee-form{background-color:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}.form-header h2{margin:0 0 var(--spacing-lg) 0;font-size:1.5rem;color:var(--color-text)}.form-body{margin-bottom:var(--spacing-lg)}.form-input{width:100%}.form-input.error{border-color:var(--color-error)}.error-message{display:block;color:var(--color-error);font-size:.875rem;margin-top:var(--spacing-xs);min-height:1.25rem}.required{color:var(--color-error)}.form-footer{display:flex;gap:var(--spacing-md);justify-content:flex-end}.employee-list-container{background-color:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}.list-header{margin-bottom:var(--spacing-lg)}.list-header h2{margin:0 0 var(--spacing-md) 0;font-size:1.5rem;color:var(--color-text)}.list-controls{display:flex;flex-direction:column;gap:var(--spacing-md)}.search-box{position:relative}.search-input{width:100%;padding-right:40px}.search-icon{position:absolute;right:var(--spacing-md);top:50%;transform:translateY(-50%);pointer-events:none}.filter-buttons{display:flex;gap:var(--spacing-sm)}.filter-btn{flex:1;background-color:var(--color-bg);color:var(--color-text);border:1px solid var(--color-border);padding:var(--spacing-sm) var(--spacing-md)}.filter-btn:hover{background-color:var(--color-card);transform:none}.filter-btn.active{background-color:var(--color-primary);color:#fff;border-color:var(--color-primary)}.employee-count{padding:var(--spacing-sm) 0;color:var(--color-text-muted);font-size:.875rem;margin-bottom:var(--spacing-md)}.employee-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.employee-card{border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-md);background-color:var(--color-bg);transition:all var(--transition-fast)}.employee-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary-light)}.employee-info{margin-bottom:var(--spacing-md)}.employee-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-sm)}.employee-name{margin:0;font-size:1.125rem;color:var(--color-text)}.employee-email{margin:0;color:var(--color-text-muted);font-size:.875rem}.status-badge{display:inline-block;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-md);font-size:.75rem;font-weight:600;text-transform:uppercase}.status-active{background-color:var(--color-success);color:#fff}.status-inactive{background-color:var(--color-text-muted);color:#fff}.employee-actions{display:flex;gap:var(--spacing-sm)}.btn-icon{flex:1;font-size:.875rem}.btn-edit{background-color:var(--color-info);color:#fff}.btn-toggle-status{background-color:var(--color-card);color:var(--color-text);border:1px solid var(--color-border)}.empty-state{text-align:center;padding:var(--spacing-xl);color:var(--color-text-muted)}.empty-state p:first-child{font-size:1.125rem;font-weight:500;margin-bottom:var(--spacing-sm)}.empty-state-hint{font-size:.875rem}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.csv-uploader{width:100%}.upload-area{background-color:var(--color-card);border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-xl);text-align:center;cursor:pointer;transition:all var(--transition-fast)}.upload-area:hover{border-color:var(--color-primary);background-color:var(--color-primary-light)}.upload-area.drag-over{border-color:var(--color-primary);background-color:var(--color-primary-light);transform:scale(1.02)}.upload-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.upload-area h3{margin:0 0 var(--spacing-sm) 0;color:var(--color-text)}.upload-instructions{color:var(--color-text);margin:0 0 var(--spacing-xs) 0}.upload-hint{color:var(--color-text-muted);font-size:.875rem;margin:0 0 var(--spacing-lg) 0}.file-input{display:none}.file-info{display:flex;align-items:center;justify-content:space-between;background-color:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-md)}.file-details{display:flex;align-items:center;gap:var(--spacing-md)}.file-icon{font-size:2rem}.file-meta{display:flex;flex-direction:column;gap:var(--spacing-xs)}.file-name{margin:0;font-weight:500;color:var(--color-text)}.file-size{margin:0;font-size:.875rem;color:var(--color-text-muted)}.btn-remove{background-color:var(--color-error);color:#fff}.btn-remove:hover{background-color:#c0392b}.upload-page .page-content{display:flex;flex-direction:column;gap:var(--spacing-xl)}.upload-section{width:100%}.preview-section{background-color:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}.preview-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-lg);flex-wrap:wrap;gap:var(--spacing-md)}.preview-header h2{margin:0;font-size:1.5rem;color:var(--color-text)}.preview-stats{display:flex;gap:var(--spacing-md);flex-wrap:wrap}.stat{padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-bg);border-radius:var(--radius-md);font-size:.875rem;font-weight:500}.stat.warning{background-color:#fff3cd;color:#856404}.warning-box{background-color:#fff3cd;border:1px solid #ffc107;border-radius:var(--radius-md);padding:var(--spacing-md);margin-bottom:var(--spacing-lg)}.warning-box h3{margin:0 0 var(--spacing-sm) 0;color:#856404;font-size:1.125rem}.warning-box p{margin:var(--spacing-sm) 0;color:#856404}.warning-box ul{margin:var(--spacing-md) 0;padding-left:var(--spacing-lg);color:#856404}.warning-box li{margin-bottom:var(--spacing-sm)}.warning-hint{font-size:.875rem;font-style:italic}.preview-table-container{overflow-x:auto;margin-bottom:var(--spacing-lg);max-height:500px;overflow-y:auto;border:1px solid var(--color-border);border-radius:var(--radius-md)}.preview-table{width:100%;border-collapse:collapse;margin:0}.preview-table thead{position:sticky;top:0;background-color:var(--color-card);z-index:1}.preview-table th{padding:var(--spacing-md);text-align:left;font-weight:600;color:var(--color-text);border-bottom:2px solid var(--color-border)}.preview-table td{padding:var(--spacing-md);border-bottom:1px solid var(--color-border);color:var(--color-text)}.preview-table tbody tr:hover{background-color:var(--color-bg)}.preview-table tbody tr:last-child td{border-bottom:none}.preview-actions{display:flex;gap:var(--spacing-md);justify-content:flex-end}@media(max-width:768px){.preview-header{flex-direction:column;align-items:flex-start}.preview-actions{flex-direction:column;width:100%}.preview-actions button{width:100%}}.modal-overlay{position:fixed;inset:0;background-color:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-md);animation:fadeIn .2s ease-in-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--color-card);border-radius:var(--radius-md);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;max-width:800px;width:100%;max-height:90vh;display:flex;flex-direction:column;position:relative;animation:slideUp .3s ease-out}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-content.bulk-upload-modal{max-width:900px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);border-bottom:1px solid var(--color-border)}.modal-header h2{margin:0;font-size:1.5rem;color:var(--color-text)}.modal-close{background:none;border:none;font-size:2rem;color:var(--color-text-muted);cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.modal-close:hover{background-color:#ef44441a;color:var(--color-error)}.modal-body{flex:1;overflow-y:auto;padding:var(--spacing-lg)}.info-box{background:var(--color-primary-light);border:1px solid var(--color-primary);border-radius:var(--radius-md);padding:var(--spacing-md);margin-bottom:var(--spacing-lg)}.info-box h3{margin:0 0 var(--spacing-sm) 0;font-size:1.1rem;color:var(--color-text)}.info-box p{margin:0 0 var(--spacing-sm) 0;color:var(--color-text-muted)}.info-box ul{margin:var(--spacing-sm) 0;padding-left:var(--spacing-lg)}.info-box li{margin-bottom:var(--spacing-xs);color:var(--color-text-muted)}.info-box li strong{color:var(--color-text)}#preview-section{margin-top:var(--spacing-lg)}.preview-summary{margin-bottom:var(--spacing-lg)}.preview-summary h3{margin:0 0 var(--spacing-md) 0;font-size:1.2rem;color:var(--color-text)}.summary-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.stat-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-md);display:flex;flex-direction:column;align-items:center;text-align:center}.stat-card.success{background:#10b9811a;border-color:var(--color-success)}.stat-card.error{background:#ef44441a;border-color:var(--color-error)}.stat-value{font-size:2rem;font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-xs)}.stat-card.success .stat-value{color:var(--color-success)}.stat-card.error .stat-value{color:var(--color-error)}.stat-label{font-size:.875rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.5px}.error-list{background:#ef44441a;border:1px solid var(--color-error);border-radius:var(--radius-md);padding:var(--spacing-md);margin-bottom:var(--spacing-lg)}.error-list h4{margin:0 0 var(--spacing-sm) 0;color:var(--color-error)}.error-list ul{margin:0;padding-left:var(--spacing-lg)}.error-list li{margin-bottom:var(--spacing-xs);color:var(--color-text)}.preview-sample h4{margin:0 0 var(--spacing-md) 0;font-size:1.1rem;color:var(--color-text)}.preview-table-sm{width:100%;border-collapse:collapse;font-size:.875rem}.preview-table-sm thead{background:var(--color-bg);border-bottom:2px solid var(--color-border)}.preview-table-sm th{padding:var(--spacing-sm);text-align:left;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;font-size:.75rem;letter-spacing:.5px}.preview-table-sm td{padding:var(--spacing-sm);border-bottom:1px solid var(--color-border);color:var(--color-text)}.preview-table-sm tbody tr:hover{background:var(--color-primary-light)}.modal-footer{display:flex;gap:var(--spacing-md);justify-content:flex-end;padding:var(--spacing-lg);border-top:1px solid var(--color-border)}.loading-overlay{position:absolute;inset:0;background:#fffffff2;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:var(--radius-md);z-index:10}[data-theme=dark] .loading-overlay{background:#111827f2}.loading-overlay .spinner{width:50px;height:50px;border:4px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:var(--spacing-md)}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay p{color:var(--color-text);font-weight:500}@media(max-width:768px){.modal-overlay{padding:var(--spacing-sm)}.modal-content{max-height:95vh}.modal-header,.modal-body,.modal-footer{padding:var(--spacing-md)}.summary-stats{grid-template-columns:1fr}.modal-footer{flex-direction:column}.modal-footer button{width:100%}.preview-table-sm{font-size:.8rem}.preview-table-sm th,.preview-table-sm td{padding:var(--spacing-xs)}}.attendance-results{margin-top:var(--spacing-xl)}.results-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-lg)}.results-header h2{margin:0;font-size:1.75rem;color:var(--color-text)}.results-summary{margin-bottom:var(--spacing-xl)}.summary-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-md)}.summary-card{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-lg);display:flex;flex-direction:column;align-items:center;text-align:center;transition:transform var(--transition-fast)}.summary-card:hover{transform:translateY(-2px);box-shadow:0 4px 6px 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button{width:100%}}.attendance-history{margin-top:var(--spacing-xl);background:var(--color-card);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-md)}.history-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--spacing-lg);gap:var(--spacing-md)}.history-header h2{margin:0;color:var(--color-text-primary);font-size:1.5rem;font-weight:600}.history-header p{margin:var(--spacing-xs) 0 0 0;color:var(--color-text-secondary);font-size:.875rem}.history-controls{display:flex;gap:var(--spacing-md);align-items:center;flex-wrap:wrap}.search-box{position:relative;min-width:200px}.search-box input{width:100%;padding:var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) 36px;border:1px solid var(--color-border);border-radius:var(--border-radius-md);background:var(--color-background);color:var(--color-text-primary);font-size:.875rem;transition:border-color .2s}.search-box 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.2s}.filter-btn:hover{background:var(--color-background)}.filter-btn.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.history-legend{display:flex;gap:var(--spacing-lg);padding:var(--spacing-md);background:var(--color-background);border-radius:var(--border-radius-md);margin-bottom:var(--spacing-lg);font-size:.875rem}.legend-item{display:flex;align-items:center;gap:var(--spacing-xs);color:var(--color-text-secondary)}.legend-badge{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:4px;font-weight:600;font-size:.75rem}.legend-badge.present{background:#10b98133;color:var(--color-success)}.legend-badge.absent{background:#ef444433;color:var(--color-error)}.legend-badge.no-record{background:var(--color-background);color:var(--color-text-muted);border:1px solid var(--color-border)}.sheet-scroll-wrapper{overflow-x:auto;overflow-y:visible;border-radius:var(--border-radius-md);border:1px solid var(--color-border);background:var(--color-card)}.sheet-scroll-wrapper::-webkit-scrollbar{height:8px}.sheet-scroll-wrapper::-webkit-scrollbar-track{background:var(--color-background);border-radius:4px}.sheet-scroll-wrapper::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}.sheet-scroll-wrapper::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}.attendance-sheet{width:100%;border-collapse:separate;border-spacing:0;font-size:.875rem;position:relative}.attendance-sheet thead{position:sticky;top:0;z-index:10;background:var(--color-card)}.attendance-sheet th{padding:var(--spacing-md);text-align:left;font-weight:600;color:var(--color-text-primary);background:var(--color-background);border-bottom:2px solid var(--color-border);white-space:nowrap}.attendance-sheet td{padding:var(--spacing-md);border-bottom:1px solid var(--color-border);color:var(--color-text-primary)}.attendance-sheet tbody tr:hover{background:#3b82f60d}.attendance-sheet tbody tr:last-child td{border-bottom:none}.sticky-col{position:sticky;background:var(--color-card);z-index:5}.sticky-col.name-col{left:0;min-width:180px;max-width:250px;font-weight:500}.sticky-col.email-col{left:180px;min-width:200px;max-width:280px;color:var(--color-text-secondary)}.sticky-col.status-col{left:380px;min-width:100px}.sticky-col:after{content:"";position:absolute;top:0;right:0;bottom:0;width:1px;background:var(--color-border)}.sticky-col.status-col:after{width:2px;background:linear-gradient(to right,var(--color-border),transparent)}.attendance-sheet thead .sticky-col{background:var(--color-background);z-index:15}.date-col{min-width:100px;text-align:center}.date-header{display:flex;flex-direction:column;align-items:center;gap:2px}.date-day{font-weight:600;font-size:.875rem;color:var(--color-text-primary)}.date-full{font-size:.75rem;color:var(--color-text-muted);font-weight:400}.attendance-cell{text-align:center;padding:var(--spacing-sm)}.attendance-badge{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:6px;font-weight:700;font-size:.875rem;transition:all .2s}.attendance-badge.present{background:#10b98126;color:var(--color-success);border:1px solid rgba(16,185,129,.3)}.attendance-badge.absent{background:#ef444426;color:var(--color-error);border:1px solid rgba(239,68,68,.3)}.attendance-badge.no-record{background:transparent;color:var(--color-text-muted);border:1px solid transparent}.attendance-cell:hover .attendance-badge.present{background:#10b98140;transform:scale(1.1)}.attendance-cell:hover .attendance-badge.absent{background:#ef444440;transform:scale(1.1)}.history-empty-state{text-align:center;padding:var(--spacing-xl) var(--spacing-md);color:var(--color-text-secondary)}.history-empty-state h3{margin:0 0 var(--spacing-sm) 0;color:var(--color-text-primary);font-size:1.125rem}.history-empty-state p{margin:0;font-size:.875rem}@media(max-width:768px){.attendance-history{padding:var(--spacing-md);margin-top:var(--spacing-md)}.history-header,.history-controls{flex-direction:column;align-items:stretch}.search-box{min-width:100%}.filter-group{justify-content:center}.history-legend{flex-direction:column;gap:var(--spacing-sm)}.sticky-col.name-col{left:0;min-width:120px;font-size:.8rem}.sticky-col.email-col{left:120px;min-width:150px;font-size:.75rem}.sticky-col.status-col{left:270px;min-width:80px}.date-col{min-width:70px}.date-day{font-size:.75rem}.date-full{font-size:.65rem}.attendance-badge{width:28px;height:28px;font-size:.75rem}.attendance-sheet th,.attendance-sheet td{padding:var(--spacing-sm)}}.date-filter-section{margin-bottom:var(--spacing-xl)}.date-filter-card{background:var(--color-card);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-sm);border:1px solid var(--color-border)}.date-filter-card label{display:flex;flex-direction:column;gap:var(--spacing-xs);margin-bottom:var(--spacing-md);color:var(--color-text-primary)}.label-hint{font-size:.875rem;font-weight:400;color:var(--color-text-secondary)}.form-select{width:100%;max-width:500px;padding:var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--border-radius-md);background:var(--color-background);color:var(--color-text-primary);font-size:1rem;cursor:pointer;transition:all .2s}.form-select:hover{border-color:var(--color-primary)}.form-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #3b82f61a}.attendance-date-section{margin-bottom:var(--spacing-lg);padding:var(--spacing-lg);background:var(--color-card);border-radius:var(--border-radius-md);border:1px solid var(--color-border)}.attendance-date-section .date-label{display:flex;flex-direction:column;gap:var(--spacing-xs);margin-bottom:var(--spacing-md);color:var(--color-text-primary)}.date-input{max-width:250px;padding:var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--border-radius-md);background:var(--color-background);color:var(--color-text-primary);font-size:1rem;transition:all .2s}.date-input:hover{border-color:var(--color-primary)}.date-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #3b82f61a}@media(max-width:768px){.date-filter-card,.attendance-date-section{padding:var(--spacing-md)}.form-select,.date-input{max-width:100%}}.match-badge{display:inline-flex;align-items:center;justify-content:center;padding:2px 6px;border-radius:4px;font-size:1rem;cursor:help}.match-badge.match-email{background:#3b82f61a}.match-badge.match-name{background:#a855f71a}.text-muted{color:var(--color-text-muted);font-style:italic;font-size:.875rem}