:root{--bg-primary: #ffffff;--bg-secondary: #fdfaf5;--bg-accent: #f5f0e6;--text-primary: #3d3b38;--text-secondary: #7a756e;--accent-primary: #d81b60;--accent-secondary: #ad1457;--accent-hover: #c2185b;--border-color: #eee9df;--card-bg: rgba(255, 255, 255, .9);--sidebar-width: 260px;--header-height: 70px;--status-active: #d1f2eb;--status-pending: #fcf3cf;--status-overdue: #fadbd8;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Outfit,sans-serif;background-color:var(--bg-secondary);color:var(--text-primary);line-height:1.5;overflow-x:hidden}#app{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background-color:var(--bg-primary);border-right:1px solid var(--border-color);padding:2rem 1.5rem;display:flex;flex-direction:column;position:fixed;height:100vh;z-index:100;transition:transform .3s ease}.sidebar-logo{font-size:1.5rem;font-weight:700;color:var(--accent-primary);margin-bottom:2.5rem;display:flex;align-items:center;gap:.5rem}.sidebar-nav{list-style:none;flex-grow:1}.nav-item{margin-bottom:.5rem}.nav-link{display:flex;align-items:center;gap:.75rem;padding:.8rem 1rem;text-decoration:none;color:var(--text-secondary);border-radius:var(--radius-md);transition:all .3s ease;font-weight:500}.nav-link:hover,.nav-link.active{background-color:var(--bg-accent);color:var(--accent-primary)}.nav-link i{font-size:1.25rem;color:#2c3e50}.main-content{flex-grow:1;margin-left:var(--sidebar-width);padding:2rem;transition:margin .3s ease}.header{height:var(--header-height);display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.page-title{font-size:1.75rem;font-weight:600}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{background:var(--card-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-color);padding:1.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform .3s ease,box-shadow .3s ease}.stat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.stat-title{font-size:.875rem;color:var(--text-secondary);margin-bottom:.5rem}.stat-value{font-size:1.5rem;font-weight:700;color:var(--accent-primary)}.table-container{background:var(--bg-primary);border-radius:var(--radius-lg);padding:1rem;border:1px solid var(--border-color);overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:1rem;color:var(--text-secondary);font-weight:600;border-bottom:1px solid var(--border-color)}td{padding:1rem;border-bottom:1px solid var(--border-color)}tr:last-child td{border-bottom:none}.badge{padding:.25rem .75rem;border-radius:50px;font-size:.75rem;font-weight:600}.badge-success{background-color:#d4edda;color:#155724}.badge-warning{background-color:#fff3cd;color:#856404}.badge-danger{background-color:#f8d7da;color:#721c24}.btn{padding:.6rem 1.5rem;border-radius:50px;border:none;font-weight:600;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;gap:.5rem;font-size:.9rem}.btn-primary{background-color:var(--accent-primary);color:#fff}.btn-primary:hover{background-color:var(--accent-hover)}.btn-outline{background-color:transparent;border:1px solid var(--accent-primary);color:var(--accent-primary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .5s ease forwards}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(.95)}}@keyframes loadSlide{0%{transform:translate(-100%)}to{transform:translate(300%)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.active-tab{background-color:var(--accent-primary)!important;color:#fff!important;border-color:var(--accent-primary)!important}tbody tr:hover{background-color:var(--bg-accent);transition:background .2s ease}.mini-stat{text-align:center}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}@media (max-width: 1024px){:root{--sidebar-width: 200px}}@media (max-width: 768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}}.calendar-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1.5rem;margin-top:2rem}.class-card{background:#fff;border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:all .3s ease;min-height:480px;border:1px solid var(--border-color)}.print-card-header{text-align:center;background-color:#f0f0f0;border:1px solid #333;padding:.5rem;font-family:Courier New,Courier,monospace}.p-room,.p-subject,.p-teacher,.p-group,.p-time,.p-month{font-weight:700;font-size:.85rem;text-transform:uppercase;margin-bottom:.1rem}.p-column-header{font-weight:700;border-top:1px solid #333;margin-top:.4rem;padding-top:.4rem;font-size:.8rem}.class-students-container{flex-grow:1;overflow-y:auto}.print-table{width:100%;border-collapse:collapse;margin-top:-1px}.print-table td{border:1px solid #333;padding:.3rem .5rem;font-size:.75rem;text-transform:uppercase;font-family:Courier New,Courier,monospace}.empty-row{height:1.6rem}.class-footer{display:flex;justify-content:space-between;align-items:center;padding-top:1rem}.draggable-student-item{cursor:grab}.draggable-student-item.dragging{opacity:.5}.group-drop-zone.drag-over{border:2px dashed var(--accent-primary);background:#d81b600d;transform:scale(1.01)}.drawer{position:fixed;top:0;right:-400px;width:380px;height:100vh;background:#fff;box-shadow:-10px 0 30px #0000001a;z-index:2000;transition:right .3s cubic-bezier(.165,.84,.44,1);display:flex;flex-direction:column}.drawer.open{right:0}.drawer-header{padding:1.5rem;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.drawer-search{padding:1rem 1.5rem;border-bottom:1px solid var(--bg-accent)}.drawer-search input{width:100%;padding:.75rem 1rem;border-radius:50px;border:1px solid var(--border-color);font-family:inherit;outline:none}.drawer-content{flex-grow:1;overflow-y:auto;padding:1rem 1.5rem;display:flex;flex-direction:column;gap:.75rem}.drawer-student-item{display:flex;align-items:center;gap:1rem;padding:.8rem;background:var(--bg-secondary);border-radius:var(--radius-md);border:1px solid transparent;transition:all .2s ease;cursor:grab}.drawer-student-item:hover{border-color:var(--accent-primary);background:#fff;box-shadow:var(--shadow-sm)}.student-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}.drawer-info{padding:1rem 1.5rem;background:var(--bg-accent);color:var(--text-secondary);font-size:.8rem;text-align:center}.drawer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000004d;z-index:1000;opacity:0;pointer-events:none;transition:opacity .3s ease}.drawer-overlay.visible{opacity:1;pointer-events:auto}.close-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-secondary)}.toast{position:fixed;bottom:2rem;left:50%;transform:translate(-50%) translateY(100px);padding:1rem 2rem;border-radius:50px;color:#fff;font-weight:600;z-index:9999;transition:all .3s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 10px 20px #0003}.toast-success{background:#27ae60}.toast-error{background:#e74c3c}.toast.show{transform:translate(-50%) translateY(0)}@media print{@page{margin:.5cm;size:auto}.sidebar,.no-print,header,.header,#student-drawer,.drawer-overlay,.drag-icon,.btn{display:none!important}.main-content{margin:0!important;padding:0!important}.calendar-grid{display:grid!important;grid-template-columns:1fr 1fr!important;gap:0!important;border:1px solid #333}.class-card{border:1px solid #333!important;border-radius:0!important;padding:0!important;min-height:auto!important;box-shadow:none!important;page-break-inside:avoid}.print-card-header{background-color:#e0e0e0!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}.print-only{display:block!important}body{background:#fff!important}}