:root{--tyd-teal:#008799;--tyd-teal-dark:#006674;--tyd-teal-light:#e6f6f8;--tyd-teal-glow:rgba(0,135,153,.16);--tyd-gold:#cd7f32;--tyd-gold-dark:#a96320;--tyd-gold-light:#fdf5ec;--tyd-gold-glow:rgba(205,127,50,.18);--tyd-gradient:linear-gradient(135deg,#008799,#cd7f32);--tyd-gradient-subtle:linear-gradient(135deg,rgba(0,135,153,.08),rgba(205,127,50,.08));--bg-body:#f4f7fc;--bg-card:#fff;--bg-input:#f8fafc;--bg-hover:#f1f5f9;--border-card:rgba(0,135,153,.1);--border-subtle:#e2e8f0;--text-main:#1e293b;--text-muted:#64748b;--text-light:#94a3b8;--color-success:#059669;--color-success-bg:#ecfdf5;--color-success-border:#a7f3d0;--color-warning:#d97706;--color-warning-bg:#fffbeb;--color-warning-border:#fde68a;--color-danger:#dc2626;--color-danger-bg:#fef2f2;--color-danger-border:#fecaca;--shadow-sm:0 1px 3px rgba(0,0,0,.05);--shadow-md:0 4px 12px rgba(0,135,153,.08);--shadow-lg:0 10px 30px rgba(0,135,153,.12);--shadow-card:0 4px 20px rgba(15,23,42,.04);--radius-sm:8px;--radius-md:14px;--radius-lg:20px;--radius-pill:9999px;--font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-display:"Outfit",sans-serif;--transition:all 0.25s cubic-bezier(0.4,0,0.2,1)}*{margin:0;padding:0;box-sizing:border-box}body{background-color:var(--bg-body);color:var(--text-main);font-family:var(--font-family);min-height:100vh;position:relative;overflow-x:hidden;-webkit-font-smoothing:antialiased}body:after,body:before{content:"";position:fixed;width:400px;height:400px;border-radius:50%;filter:blur(140px);z-index:-1;pointer-events:none;opacity:.12}body:before{top:5%;left:10%;background:var(--tyd-teal)}body:after{bottom:10%;right:10%;background:var(--tyd-gold)}.app-container{max-width:1600px;margin:0 auto;padding:24px 28px 60px}.header-wrapper{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);padding:20px 28px;box-shadow:var(--shadow-md);margin-bottom:24px;display:flex;flex-direction:column;gap:18px}.header-top{justify-content:space-between;gap:20px;flex-wrap:wrap}.brand-section,.header-top{display:flex;align-items:center}.brand-section{gap:16px}.brand-logo-img{width:52px;height:52px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:var(--shadow-sm);border:1px solid var(--border-subtle)}.brand-info{display:flex;flex-direction:column;gap:2px}.brand-badge{gap:6px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:var(--tyd-teal);background:var(--tyd-teal-light);padding:2px 10px;border-radius:var(--radius-pill);width:-moz-fit-content;width:fit-content}.brand-badge,.brand-title-link{display:inline-flex;align-items:center}.brand-title-link{font-family:var(--font-display);font-size:22px;font-weight:800;color:var(--text-main);text-decoration:none;gap:8px;transition:var(--transition)}.brand-title-link:hover{color:var(--tyd-teal)}.brand-title-link svg{color:var(--tyd-teal);transition:transform .2s}.brand-title-link:hover svg{transform:translateX(3px) translateY(-3px)}.meeting-meta-line{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:14px;flex-wrap:wrap}.meeting-id-pill{background:#f1f5f9;padding:3px 10px;border-radius:6px;font-family:monospace;font-weight:600;color:var(--tyd-teal-dark)}.class-switcher-container{display:flex;align-items:center;gap:12px;position:relative}.class-switcher-label{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);white-space:nowrap}.class-dropdown-wrapper{position:relative;min-width:420px}@media (max-width:768px){.class-dropdown-wrapper{min-width:100%;width:100%}}.class-dropdown-trigger{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:10px 16px;background:#fff;border:1.5px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;box-shadow:var(--shadow-sm);transition:var(--transition);text-align:left}.class-dropdown-trigger.open,.class-dropdown-trigger:hover{border-color:var(--tyd-teal);box-shadow:0 4px 16px var(--tyd-teal-glow)}.class-dropdown-trigger-content{display:flex;align-items:center;gap:12px;overflow:hidden}.class-dropdown-icon{width:38px;height:38px;border-radius:10px;background:var(--tyd-teal-light);color:var(--tyd-teal-dark);display:flex;align-items:center;justify-content:center;flex-shrink:0}.class-dropdown-info{display:flex;flex-direction:column;gap:2px;overflow:hidden}.class-dropdown-title{font-family:var(--font-display);font-size:14px;font-weight:700;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.class-dropdown-subtitle{font-size:11px;color:var(--text-muted);display:flex;align-items:center;gap:6px}.class-dropdown-arrow{color:var(--text-muted);transition:transform .25s ease;flex-shrink:0}.class-dropdown-arrow.rotated{transform:rotate(180deg);color:var(--tyd-teal)}.class-dropdown-menu{position:absolute;top:calc(100% + 8px);left:0;right:0;background:#fff;border:1px solid var(--border-card);border-radius:var(--radius-md);box-shadow:0 12px 36px rgba(15,23,42,.16);z-index:50;padding:8px;display:flex;flex-direction:column;gap:6px;animation:dropdownFadeIn .2s cubic-bezier(.16,1,.3,1)}.class-dropdown-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-radius:10px;border:1px solid transparent;background:transparent;cursor:pointer;transition:var(--transition);text-align:left;width:100%}.class-dropdown-item:hover{background:#f8fbff;border-color:rgba(0,135,153,.15)}.class-dropdown-item.selected{background:var(--tyd-teal-light);border-color:var(--tyd-teal)}.class-item-left{display:flex;align-items:center;gap:12px;overflow:hidden}.class-item-badge{font-size:10px;font-weight:700;text-transform:uppercase;padding:2px 8px;border-radius:var(--radius-pill);background:#f1f5f9;color:var(--text-muted);white-space:nowrap}.class-dropdown-item.selected .class-item-badge{background:#fff;color:var(--tyd-teal)}.class-item-check{color:var(--tyd-teal);flex-shrink:0}@keyframes dropdownFadeIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.kpi-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-md);padding:18px 20px;box-shadow:var(--shadow-card);display:flex;align-items:center;gap:16px;position:relative;overflow:hidden;transition:var(--transition)}.kpi-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.kpi-icon-box{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.kpi-icon-teal{background:var(--tyd-teal-light);color:var(--tyd-teal)}.kpi-icon-gold{background:var(--tyd-gold-light);color:var(--tyd-gold)}.kpi-icon-green{background:var(--color-success-bg);color:var(--color-success)}.kpi-icon-orange{background:var(--color-warning-bg);color:var(--color-warning)}.kpi-icon-red{background:var(--color-danger-bg);color:var(--color-danger)}.kpi-content{display:flex;flex-direction:column}.kpi-label{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.kpi-value{font-family:var(--font-display);font-size:26px;font-weight:800;color:var(--text-main);line-height:1.2}.kpi-subtext{font-size:11px;color:var(--text-muted);margin-top:2px}.toolbar-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-md);padding:18px 22px;box-shadow:var(--shadow-card);margin-bottom:20px;display:flex;flex-direction:column;gap:16px}.toolbar-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.search-box{position:relative;flex:1 1;min-width:280px}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}.search-input{width:100%;padding:11px 40px 11px 42px;background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:10px;font-size:14px;color:var(--text-main);transition:var(--transition)}.search-input:focus{outline:none;border-color:var(--tyd-teal);background:#fff;box-shadow:0 0 0 3px var(--tyd-teal-glow)}.btn-clear{position:absolute;right:12px;top:50%;transform:translateY(-50%);border:none;background:#e2e8f0;color:var(--text-muted);width:20px;height:20px;border-radius:50%;cursor:pointer;font-size:11px;justify-content:center}.btn-clear,.toolbar-actions{display:flex;align-items:center}.toolbar-actions{gap:12px;flex-wrap:wrap}.btn-export{background:linear-gradient(135deg,#059669,#047857);color:#fff;border:none;padding:10px 18px;border-radius:10px;font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:8px;box-shadow:0 2px 8px rgba(5,150,105,.25);transition:var(--transition)}.btn-export:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(5,150,105,.35)}.filter-row{gap:18px}.filter-group,.filter-row{display:flex;align-items:center;flex-wrap:wrap}.filter-group{gap:8px}.filter-label{font-weight:700;text-transform:uppercase;letter-spacing:.5px}.chip,.filter-label{font-size:12px;color:var(--text-muted)}.chip{border:1px solid var(--border-subtle);background:#fff;padding:6px 14px;border-radius:var(--radius-pill);font-weight:600;cursor:pointer;transition:var(--transition)}.chip:hover{color:var(--tyd-teal)}.chip.active,.chip:hover{border-color:var(--tyd-teal)}.chip.active{background:var(--tyd-teal-light);color:var(--tyd-teal-dark);font-weight:700}.chip-chuyenvien.active{background:#eff6ff;border-color:#3b82f6;color:#1d4ed8}.chip-master.active{background:var(--tyd-gold-light);border-color:var(--tyd-gold);color:var(--tyd-gold-dark)}.chip-success.active{background:var(--color-success-bg);border-color:var(--color-success);color:var(--color-success)}.chip-warning.active{background:var(--color-warning-bg);border-color:var(--color-warning);color:var(--color-warning)}.chip-danger.active{background:var(--color-danger-bg);border-color:var(--color-danger);color:var(--color-danger)}.table-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-md);box-shadow:var(--shadow-card);overflow:hidden}.table-header-bar{padding:14px 20px;border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;background:#fafcff}.table-counter{font-size:13px;font-weight:600;color:var(--text-muted)}.table-legend{gap:16px;font-size:12px;color:var(--text-muted)}.legend-item,.table-legend{display:flex;align-items:center}.legend-item{gap:6px}.dot{width:8px;height:8px;border-radius:50%}.dot-green{background:var(--color-success)}.dot-orange{background:var(--color-warning)}.dot-red{background:var(--color-danger)}.dot-gray{background:#cbd5e1}.table-responsive{width:100%;overflow-x:auto;position:relative}.matrix-table{width:100%;border-collapse:separate;border-spacing:0;font-size:13px}.matrix-table th{background:#f8fafc;color:var(--text-muted);font-weight:700;font-size:12px;padding:12px 14px;text-align:left;border-bottom:1px solid var(--border-subtle);white-space:nowrap;letter-spacing:.3px}.matrix-table td{padding:12px 14px;border-bottom:1px solid #f1f5f9;color:var(--text-main);vertical-align:middle;background:#fff;transition:background .15s ease}.matrix-table tbody tr:hover td{background:#f8fbff}.col-sticky-1{left:0;width:50px;text-align:center!important}.col-sticky-1,.col-sticky-2{position:-webkit-sticky;position:sticky;z-index:5}.col-sticky-2{left:50px;min-width:220px;max-width:320px;box-shadow:4px 0 10px rgba(0,0,0,.04)}.matrix-table th.col-sticky-1,.matrix-table th.col-sticky-2{background:#f8fafc;z-index:10}.roll-pill{display:inline-block;background:var(--tyd-teal-light);color:var(--tyd-teal-dark);font-family:monospace;font-weight:700;font-size:12px;padding:2px 8px;border-radius:6px;border:1px solid rgba(0,135,153,.2)}.student-cell{display:flex;flex-direction:column}.student-fullname{font-weight:600;color:var(--text-main)}.student-submail{font-size:11px;color:var(--text-muted)}.badge-group{display:inline-flex;padding:3px 8px;border-radius:6px;font-size:11px;font-weight:600;white-space:nowrap}.badge-k04{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}.badge-m4{background:var(--tyd-gold-light);color:var(--tyd-gold-dark);border:1px solid rgba(205,127,50,.3)}.badge-tyd{background:#f1f5f9;color:#475569;border:1px solid #e2e8f0}.qual-badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:var(--radius-pill);font-size:12px;font-weight:700;white-space:nowrap}.qual-dat{background:var(--color-success-bg);color:var(--color-success);border:1px solid var(--color-success-border)}.qual-nhacnho{background:var(--color-warning-bg);color:var(--color-warning);border:1px solid var(--color-warning-border)}.qual-nguyco{background:var(--color-danger-bg);color:var(--color-danger);border:1px solid var(--color-danger-border)}.week-cell-clickable{cursor:pointer;padding:8px 10px!important;text-align:center}.week-badge{display:inline-flex;flex-direction:column;align-items:center;padding:4px 8px;border-radius:8px;font-size:12px;font-weight:600;min-width:65px;transition:var(--transition)}.week-badge:hover{transform:scale(1.05)}.badge-excellent{background:var(--color-success-bg);color:var(--color-success);border:1px solid var(--color-success-border)}.badge-good{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}.badge-warning{background:var(--color-warning-bg);color:var(--color-warning);border:1px solid var(--color-warning-border)}.badge-absent{background:#f8fafc;color:#94a3b8;border:1px dashed #cbd5e1}.badge-current{background:var(--tyd-teal-light);color:var(--tyd-teal-dark);border:1px solid var(--tyd-teal)}.badge-future{background:#f8fafc;color:#cbd5e1;border:1px dotted #e2e8f0}.week-badge-time{font-size:10px;font-weight:400;opacity:.85}.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,.6);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .2s ease-out}.modal-content{background:#fff;border-radius:var(--radius-lg);max-width:650px;width:100%;max-height:85vh;display:flex;flex-direction:column;box-shadow:0 20px 40px rgba(0,0,0,.2);overflow:hidden;animation:slideUp .25s ease-out}.modal-header{padding:20px 24px;border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;background:#f8fafc}.modal-title{font-family:var(--font-display);font-size:18px;font-weight:700;color:var(--text-main)}.modal-close{border:none;background:#e2e8f0;color:var(--text-muted);width:32px;height:32px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;transition:var(--transition)}.modal-close:hover{background:#cbd5e1;color:var(--text-main)}.modal-body{padding:20px 24px;overflow-y:auto}.day-log-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#f8fafc;border:1px solid var(--border-subtle);border-radius:10px;margin-bottom:10px}.day-log-date{font-weight:700;font-size:14px;color:var(--text-main)}.day-log-times{font-size:12px;color:var(--text-muted)}.day-log-duration{font-family:monospace;font-weight:700;font-size:13px;color:var(--tyd-teal-dark)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width:992px){.header-top{flex-direction:column;align-items:flex-start}.class-switcher-container{width:100%}}