*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#6366f1;--primary-dark:#4f46e5;--primary-light:#e0e7ff;--secondary:#f59e0b;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--info:#3b82f6;--bg:#f8fafc;--surface:#fff;--surface2:#f1f5f9;--border:#e2e8f0;--text:#0f172a;--text-muted:#64748b;--text-light:#94a3b8;--shadow-sm:0 1px 3px #00000014, 0 1px 2px #0000000a;--shadow:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-md:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--shadow-lg:0 20px 25px -5px #0000001a, 0 10px 10px -5px #0000000a;--radius:12px;--radius-sm:8px;--radius-lg:16px;--radius-xl:24px}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:Inter,Plus Jakarta Sans,sans-serif;line-height:1.6}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}a{color:inherit;text-decoration:none}.app-layout{min-height:100vh;display:flex}.sidebar{z-index:100;background:linear-gradient(160deg,#1e1b4b 0%,#312e81 50%,#4338ca 100%);flex-direction:column;width:260px;min-height:100vh;transition:transform .3s;display:flex;position:fixed;top:0;bottom:0;left:0;overflow-y:auto}.sidebar-logo{border-bottom:1px solid #ffffff1a;padding:28px 24px 20px}.sidebar-logo .logo-icon{background:linear-gradient(135deg,#f59e0b,#fbbf24);border-radius:12px;justify-content:center;align-items:center;width:44px;height:44px;margin-bottom:12px;font-size:22px;display:flex;box-shadow:0 4px 15px #f59e0b66}.sidebar-logo h1{color:#fff;font-family:Plus Jakarta Sans,sans-serif;font-size:16px;font-weight:700;line-height:1.3}.sidebar-logo p{color:#ffffff80;text-transform:uppercase;letter-spacing:.8px;margin-top:2px;font-size:11px}.sidebar-nav{flex:1;padding:16px 12px}.nav-section-label{color:#ffffff59;text-transform:uppercase;letter-spacing:1.2px;margin-top:8px;padding:8px 12px 6px;font-size:10px;font-weight:600}.nav-item{color:#ffffffa6;cursor:pointer;text-align:left;background:0 0;border:none;border-radius:10px;align-items:center;gap:12px;width:100%;margin-bottom:2px;padding:11px 14px;font-size:14px;font-weight:500;transition:all .2s;display:flex}.nav-item:hover{color:#fff;background:#ffffff1a}.nav-item.active{color:#fff;background:#ffffff26;font-weight:600}.nav-item.active .nav-icon{color:#fbbf24}.nav-icon{flex-shrink:0;font-size:18px}.sidebar-footer{border-top:1px solid #ffffff1a;padding:16px}.sidebar-footer p{color:#ffffff59;text-align:center;font-size:11px}.main-content{flex-direction:column;flex:1;min-height:100vh;margin-left:260px;display:flex}.topbar{background:var(--surface);border-bottom:1px solid var(--border);z-index:50;height:64px;box-shadow:var(--shadow-sm);justify-content:space-between;align-items:center;padding:0 32px;display:flex;position:sticky;top:0}.topbar-title{color:var(--text);font-size:20px;font-weight:700}.topbar-subtitle{color:var(--text-muted);margin-top:1px;font-size:13px}.topbar-right{align-items:center;gap:12px;display:flex}.page-content{flex:1;padding:32px}.card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm);overflow:hidden}.card-header{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:20px 24px;display:flex}.card-title{color:var(--text);font-size:16px;font-weight:600}.card-body{padding:24px}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:32px;display:grid}.stat-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm);align-items:flex-start;gap:16px;padding:24px;transition:transform .2s,box-shadow .2s;display:flex}.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.stat-icon{border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;font-size:24px;display:flex}.stat-info h3{margin-bottom:4px;font-size:28px;font-weight:800;line-height:1}.stat-info p{color:var(--text-muted);font-size:13px;font-weight:500}.btn{border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;border:none;align-items:center;gap:8px;padding:9px 18px;font-size:14px;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;box-shadow:0 4px 12px #6366f14d}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #6366f173}.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.btn-success{color:#fff;background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 4px 12px #10b9814d}.btn-success:hover{transform:translateY(-1px);box-shadow:0 6px 20px #10b98166}.btn-danger{color:#fff;background:linear-gradient(135deg,#ef4444,#dc2626);box-shadow:0 4px 12px #ef44444d}.btn-danger:hover{transform:translateY(-1px);box-shadow:0 6px 20px #ef444466}.btn-ghost{color:var(--text-muted);border:1px solid var(--border);background:0 0}.btn-ghost:hover{background:var(--surface2);color:var(--text)}.btn-sm{padding:6px 12px;font-size:13px}.btn-icon{border-radius:8px;justify-content:center;width:36px;height:36px;padding:0}.form-group{margin-bottom:20px}.form-label{color:var(--text);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.form-control{border:1.5px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text);background:var(--surface);outline:none;padding:10px 14px;font-size:14px;transition:border-color .2s,box-shadow .2s}.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.form-row{grid-template-columns:1fr 1fr;gap:16px;display:grid}.form-row-3{grid-template-columns:1fr 1fr 1fr;gap:16px;display:grid}.table-wrapper{overflow-x:auto}table{border-collapse:collapse;width:100%}thead th{background:var(--surface2);text-align:left;color:var(--text-muted);text-transform:uppercase;letter-spacing:.6px;border-bottom:1px solid var(--border);padding:12px 16px;font-size:12px;font-weight:600}tbody td{border-bottom:1px solid var(--border);color:var(--text);vertical-align:middle;padding:14px 16px;font-size:14px}tbody tr:last-child td{border-bottom:none}tbody tr:hover{background:#fafbff}.badge{border-radius:20px;align-items:center;padding:3px 10px;font-size:12px;font-weight:600;display:inline-flex}.badge-green{color:#16a34a;background:#dcfce7}.badge-red{color:#dc2626;background:#fee2e2}.badge-yellow{color:#ca8a04;background:#fef9c3}.badge-blue{color:#2563eb;background:#dbeafe}.badge-purple{color:#7c3aed;background:#ede9fe}.badge-gray{color:#64748b;background:#f1f5f9}.avatar{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:14px;font-weight:700;display:flex}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#00000080;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;max-width:560px;max-height:90vh;animation:.25s slideUp;overflow-y:auto}.modal-lg{max-width:760px}.modal-header{justify-content:space-between;align-items:center;padding:24px 28px 0;display:flex}.modal-title{font-size:18px;font-weight:700}.modal-body{padding:24px 28px}.modal-footer{justify-content:flex-end;gap:12px;padding:0 28px 24px;display:flex}.modal-close{background:var(--surface2);width:32px;height:32px;color:var(--text-muted);cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;font-size:18px;transition:background .2s;display:flex}.modal-close:hover{background:var(--border);color:var(--text)}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.batch-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;display:grid}.batch-card{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-sm);cursor:pointer;transition:transform .2s,box-shadow .2s;overflow:hidden}.batch-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}.batch-card-header{padding:20px 22px;position:relative;overflow:hidden}.batch-card-header:before{content:"";background:#ffffff26;border-radius:50%;width:120px;height:120px;position:absolute;top:-30px;right:-30px}.batch-card-header:after{content:"";background:#ffffff14;border-radius:50%;width:80px;height:80px;position:absolute;bottom:-20px;left:-10px}.batch-card-icon{z-index:1;background:#fff3;border-radius:12px;justify-content:center;align-items:center;width:48px;height:48px;margin-bottom:12px;font-size:22px;display:flex;position:relative}.batch-card-name{color:#fff;z-index:1;font-size:18px;font-weight:700;line-height:1.2;position:relative}.batch-card-subject{color:#ffffffbf;z-index:1;margin-top:4px;font-size:13px;position:relative}.batch-card-body{padding:16px 22px}.batch-card-info{flex-wrap:wrap;gap:12px;margin-bottom:16px;display:flex}.batch-info-item{color:var(--text-muted);align-items:center;gap:6px;font-size:13px;display:flex}.batch-card-footer{border-top:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 22px;display:flex}.attendance-student-row{border-bottom:1px solid var(--border);align-items:center;gap:16px;padding:14px 20px;transition:background .15s;display:flex}.attendance-student-row:hover{background:#fafbff}.attendance-student-row:last-child{border-bottom:none}.attendance-status-btns{gap:8px;margin-left:auto;display:flex}.status-btn{cursor:pointer;border:2px solid #0000;border-radius:20px;padding:6px 14px;font-size:12px;font-weight:600;transition:all .15s}.status-btn.present{color:#10b981;background:0 0;border-color:#10b981}.status-btn.present.active{color:#fff;background:#10b981}.status-btn.absent{color:#ef4444;background:0 0;border-color:#ef4444}.status-btn.absent.active{color:#fff;background:#ef4444}.status-btn.late{color:#f59e0b;background:0 0;border-color:#f59e0b}.status-btn.late.active{color:#fff;background:#f59e0b}.search-bar{flex:1;max-width:320px;position:relative}.search-bar input{border:1.5px solid var(--border);background:var(--surface2);border-radius:10px;outline:none;width:100%;padding:9px 14px 9px 40px;font-size:14px;transition:all .2s}.search-bar input:focus{border-color:var(--primary);background:var(--surface);box-shadow:0 0 0 3px #6366f11a}.search-icon{color:var(--text-light);font-size:16px;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.progress-bar{background:var(--surface2);border-radius:4px;height:8px;overflow:hidden}.progress-fill{border-radius:4px;height:100%;transition:width .4s}.color-options{flex-wrap:wrap;gap:8px;display:flex}.color-option{cursor:pointer;border:3px solid #0000;border-radius:50%;width:28px;height:28px;transition:all .15s}.color-option.selected{border-color:#000;transform:scale(1.15)}.day-chips{flex-wrap:wrap;gap:8px;display:flex}.day-chip{border:1.5px solid var(--border);cursor:pointer;color:var(--text-muted);border-radius:20px;padding:5px 12px;font-size:12px;font-weight:600;transition:all .15s}.day-chip.selected{background:var(--primary);border-color:var(--primary);color:#fff}.empty-state{text-align:center;padding:64px 32px}.empty-state .empty-icon{opacity:.4;margin-bottom:16px;font-size:56px}.empty-state h3{color:var(--text);margin-bottom:8px;font-size:18px;font-weight:600}.empty-state p{color:var(--text-muted);margin-bottom:20px;font-size:14px}.hamburger{cursor:pointer;background:0 0;border:none;flex-direction:column;gap:5px;padding:8px;display:none}.hamburger span{background:var(--text);border-radius:2px;width:22px;height:2px;transition:all .3s;display:block}@media (width<=768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}.hamburger{display:flex}.page-content{padding:20px 16px}.topbar{padding:0 16px}.form-row,.form-row-3{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr 1fr}.batch-grid{grid-template-columns:1fr}}@media (width<=480px){.stats-grid{grid-template-columns:1fr}}.sidebar-overlay{z-index:99;background:#00000080;display:none;position:fixed;inset:0}.sidebar-overlay.open{display:block}.date-nav{align-items:center;gap:12px;display:flex}.date-nav button{border:1.5px solid var(--border);background:var(--surface);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;width:34px;height:34px;font-size:16px;transition:all .2s;display:flex}.date-nav button:hover{background:var(--primary);border-color:var(--primary);color:#fff}.date-display{background:var(--surface2);border:1.5px solid var(--border);border-radius:8px;padding:7px 14px;font-size:15px;font-weight:600}.att-summary{align-items:center;gap:24px;display:flex}.att-legend{flex-direction:column;gap:8px;display:flex}.att-legend-item{align-items:center;gap:8px;font-size:13px;display:flex}.att-dot{border-radius:50%;width:10px;height:10px}.page-header{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:28px;display:flex}.page-header h2{color:var(--text);font-size:24px;font-weight:800}.page-header p{color:var(--text-muted);margin-top:4px;font-size:14px}.spinner{border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:40px;height:40px;margin:40px auto;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-wrap{text-align:center;padding:60px}