:root{--primary: #4f46e5;--primary-light: #818cf8;--primary-dark: #3730a3;--primary-bg: #eef2ff;--secondary: #0ea5e9;--secondary-bg: #f0f9ff;--success: #22c55e;--success-bg: #f0fdf4;--warning: #f59e0b;--warning-bg: #fffbeb;--danger: #ef4444;--danger-bg: #fef2f2;--purple: #8b5cf6;--purple-bg: #f5f3ff;--pink: #ec4899;--teal: #14b8a6;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--gray-900: #111827;--radius: 10px;--radius-lg: 14px;--radius-sm: 6px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 6px rgba(0,0,0,.05), 0 2px 4px rgba(0,0,0,.04);--shadow-lg: 0 10px 25px rgba(0,0,0,.08), 0 4px 10px rgba(0,0,0,.04);--shadow-xl: 0 20px 40px rgba(0,0,0,.1);--sidebar-width: 264px;--transition: all .2s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:14px;scroll-behavior:smooth}body{font-family:Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans KR,sans-serif;color:var(--gray-800);background:#f0f2f5;line-height:1.6;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}button{cursor:pointer;border:none;font-family:inherit;font-size:inherit}input,select,textarea{font-family:inherit;font-size:inherit}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:linear-gradient(195deg,#1e1b4b,#312e81 40%,#3730a3);color:#fff;position:fixed;top:0;left:0;bottom:0;display:flex;flex-direction:column;z-index:100;overflow-y:auto;transition:transform .3s cubic-bezier(.4,0,.2,1)}.sidebar-header{padding:24px 20px 20px;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar-header h1{font-size:1.15rem;font-weight:700;color:#fff;letter-spacing:-.01em}.sidebar-header p{font-size:.78rem;color:#ffffff80;margin-top:4px}.sidebar-nav{flex:1;padding:16px 12px}.nav-section{margin-bottom:6px}.nav-section-title{font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;color:#ffffff59;padding:10px 14px 6px;font-weight:700}.nav-link{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:var(--radius);color:#ffffffa6;transition:var(--transition);font-size:.88rem;font-weight:500;margin-bottom:2px}.nav-link:hover{background:#ffffff1a;color:#fff;transform:translate(2px)}.nav-link.active{background:#ffffff26;color:#fff;font-weight:600;box-shadow:inset 3px 0 #fff}.nav-link .icon{font-size:1.15rem;width:22px;text-align:center;flex-shrink:0}.sidebar-footer{padding:16px 20px;border-top:1px solid rgba(255,255,255,.08);font-size:.75rem;color:#fff6;display:flex;align-items:center;gap:8px}.sidebar-footer .dot{width:7px;height:7px;background:var(--success);border-radius:50%;flex-shrink:0}.mobile-menu-btn{display:none;position:fixed;top:14px;left:14px;z-index:200;background:var(--primary);color:#fff;width:42px;height:42px;border-radius:var(--radius);align-items:center;justify-content:center;font-size:1.3rem;box-shadow:var(--shadow-md)}.sidebar-overlay{display:none;position:fixed;inset:0;background:#0006;z-index:99}.main-content{flex:1;margin-left:var(--sidebar-width);padding:28px 36px;min-height:100vh}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px;flex-wrap:wrap;gap:12px}.page-header h2{font-size:1.55rem;font-weight:800;color:var(--gray-900);letter-spacing:-.02em}.page-header .page-subtitle{font-size:.85rem;color:var(--gray-500);font-weight:400;margin-top:2px}.page-header-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);border:1px solid var(--gray-100);transition:var(--transition);overflow:hidden}.card:hover{box-shadow:var(--shadow-md)}.card-header{padding:18px 22px;border-bottom:1px solid var(--gray-100);display:flex;justify-content:space-between;align-items:center}.card-header h3{font-size:1rem;font-weight:700;color:var(--gray-800)}.card-body{padding:22px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px;margin-bottom:28px}.stat-card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);border:1px solid var(--gray-100);padding:22px;position:relative;overflow:hidden;transition:var(--transition)}.stat-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--primary);border-radius:0 2px 2px 0}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.stat-card .stat-icon{font-size:1.6rem;margin-bottom:8px}.stat-card .stat-label{font-size:.78rem;color:var(--gray-500);text-transform:uppercase;letter-spacing:.04em;font-weight:700}.stat-card .stat-value{font-size:1.9rem;font-weight:800;color:var(--gray-900);margin-top:4px;letter-spacing:-.02em}.stat-card .stat-change{font-size:.78rem;margin-top:6px;font-weight:600}.stat-card .stat-change.positive{color:var(--success)}.stat-card .stat-change.negative{color:var(--danger)}.stat-card.accent-blue:before{background:var(--secondary)}.stat-card.accent-green:before{background:var(--success)}.stat-card.accent-yellow:before{background:var(--warning)}.stat-card.accent-red:before{background:var(--danger)}.stat-card.accent-purple:before{background:var(--purple)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:var(--radius);font-weight:600;transition:var(--transition);font-size:.85rem;white-space:nowrap}.btn:active{transform:scale(.97)}.btn-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;box-shadow:0 2px 6px #4f46e54d}.btn-primary:hover{box-shadow:0 4px 12px #4f46e566;transform:translateY(-1px)}.btn-secondary{background:#fff;color:var(--gray-700);border:1px solid var(--gray-200)}.btn-secondary:hover{background:var(--gray-50);border-color:var(--gray-300)}.btn-success{background:linear-gradient(135deg,var(--success) 0%,#16a34a 100%);color:#fff;box-shadow:0 2px 6px #22c55e4d}.btn-success:hover{box-shadow:0 4px 12px #22c55e66;transform:translateY(-1px)}.btn-danger{background:linear-gradient(135deg,var(--danger) 0%,#dc2626 100%);color:#fff;box-shadow:0 2px 6px #ef44444d}.btn-danger:hover{box-shadow:0 4px 12px #ef444466;transform:translateY(-1px)}.btn-warning{background:linear-gradient(135deg,var(--warning) 0%,#d97706 100%);color:#fff;box-shadow:0 2px 6px #f59e0b4d}.btn-warning:hover{box-shadow:0 4px 12px #f59e0b66;transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--gray-600);padding:8px 12px}.btn-ghost:hover{background:var(--gray-100);color:var(--gray-900)}.btn-sm{padding:5px 12px;font-size:.78rem;border-radius:var(--radius-sm)}.btn-lg{padding:12px 26px;font-size:1rem}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}thead th{background:var(--gray-50);padding:12px 14px;text-align:left;font-weight:700;font-size:.76rem;color:var(--gray-500);text-transform:uppercase;letter-spacing:.05em;border-bottom:2px solid var(--gray-100);white-space:nowrap;cursor:pointer;-webkit-user-select:none;user-select:none;transition:var(--transition)}thead th:hover{background:var(--gray-100);color:var(--gray-700)}tbody td{padding:12px 14px;border-bottom:1px solid var(--gray-50);font-size:.88rem;color:var(--gray-700)}tbody tr{transition:var(--transition)}tbody tr:hover{background:var(--primary-bg)}tbody tr:last-child td{border-bottom:none}.form-group{margin-bottom:18px}.form-group label{display:block;font-weight:700;font-size:.82rem;color:var(--gray-600);margin-bottom:6px}.form-control{width:100%;padding:10px 14px;border:1.5px solid var(--gray-200);border-radius:var(--radius);font-size:.88rem;transition:var(--transition);background:#fff;color:var(--gray-800)}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px #4f46e514}.form-control::placeholder{color:var(--gray-400)}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}.modal-overlay{position:fixed;inset:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);width:100%;max-width:640px;max-height:85vh;display:flex;flex-direction:column;animation:modalSlideIn .3s cubic-bezier(.4,0,.2,1)}@keyframes modalSlideIn{0%{transform:translateY(20px) scale(.97);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}.modal-lg{max-width:800px}.modal-header{padding:20px 24px;border-bottom:1px solid var(--gray-100);display:flex;justify-content:space-between;align-items:center}.modal-header h3{font-size:1.15rem;font-weight:700}.modal-close{background:var(--gray-100);font-size:1.1rem;color:var(--gray-500);padding:6px;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition)}.modal-close:hover{background:var(--gray-200);color:var(--gray-800)}.modal form{display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden}.modal-body{padding:24px;overflow-y:auto;flex:1;min-height:0}.modal-footer{padding:16px 24px;border-top:1px solid var(--gray-100);display:flex;justify-content:flex-end;gap:10px;flex-shrink:0}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:9999px;font-size:.74rem;font-weight:700}.badge-primary{background:var(--primary-bg);color:var(--primary)}.badge-success{background:var(--success-bg);color:#16a34a}.badge-warning{background:var(--warning-bg);color:#d97706}.badge-danger{background:var(--danger-bg);color:#dc2626}.badge-gray{background:var(--gray-100);color:var(--gray-600)}.badge-purple{background:var(--purple-bg);color:var(--purple)}.toolbar{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap;align-items:center}.search-wrapper{position:relative;flex:1;min-width:220px}.search-wrapper .search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);font-size:.9rem;color:var(--gray-400);pointer-events:none}.search-wrapper .search-clear{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:var(--gray-200);border:none;width:22px;height:22px;border-radius:50%;font-size:.7rem;color:var(--gray-600);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition)}.search-wrapper .search-clear:hover{background:var(--gray-300)}.search-input{width:100%;padding:10px 14px 10px 36px;border:1.5px solid var(--gray-200);border-radius:var(--radius);font-size:.88rem;transition:var(--transition);background:#fff}.search-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px #4f46e514}.filter-select{padding:10px 14px;border:1.5px solid var(--gray-200);border-radius:var(--radius);font-size:.84rem;background:#fff;min-width:130px;transition:var(--transition);color:var(--gray-700);font-weight:500}.filter-select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px #4f46e514}.tabs{display:flex;border-bottom:2px solid var(--gray-100);margin-bottom:24px;gap:4px}.tab{padding:10px 18px;color:var(--gray-400);font-weight:600;border-bottom:2px solid transparent;margin-bottom:-2px;transition:var(--transition);background:none;border-radius:var(--radius-sm) var(--radius-sm) 0 0;font-size:.88rem}.tab:hover{color:var(--gray-700);background:var(--gray-50)}.tab.active{color:var(--primary);border-bottom-color:var(--primary);background:var(--primary-bg)}.attendance-status{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:.78rem;font-weight:800;transition:var(--transition);border:2px solid transparent}.attendance-status:hover{transform:scale(1.15)}.attendance-status.present{background:#dcfce7;color:#16a34a;border-color:#bbf7d0}.attendance-status.absent{background:#fef2f2;color:#dc2626;border-color:#fecaca}.attendance-status.late{background:#fffbeb;color:#d97706;border-color:#fde68a}.attendance-status.excused{background:#f0f9ff;color:#0284c7;border-color:#bae6fd}.attendance-status.none{background:var(--gray-100);color:var(--gray-400);border-color:var(--gray-200)}.avatar{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;font-weight:700;color:#fff;flex-shrink:0}.avatar-sm{width:32px;height:32px;font-size:.72rem}.avatar-md{width:42px;height:42px;font-size:.9rem}.avatar-lg{width:56px;height:56px;font-size:1.2rem}.avatar-xl{width:72px;height:72px;font-size:1.5rem}.student-name-cell{display:flex;align-items:center;gap:10px}.student-name-cell .name-info{display:flex;flex-direction:column}.student-name-cell .name-info strong{font-weight:700;color:var(--gray-900)}.student-name-cell .name-info .sub{font-size:.75rem;color:var(--gray-400)}.progress-bar{background:var(--gray-100);border-radius:999px;height:8px;overflow:hidden;width:100%}.progress-bar .progress-fill{height:100%;border-radius:999px;transition:width .5s cubic-bezier(.4,0,.2,1)}.progress-bar .progress-fill.green{background:linear-gradient(90deg,#22c55e,#16a34a)}.progress-bar .progress-fill.yellow{background:linear-gradient(90deg,#f59e0b,#d97706)}.progress-bar .progress-fill.red{background:linear-gradient(90deg,#ef4444,#dc2626)}.progress-bar .progress-fill.blue{background:linear-gradient(90deg,#4f46e5,#3730a3)}.empty-state{text-align:center;padding:52px 24px;color:var(--gray-400)}.empty-state .icon{font-size:3.5rem;margin-bottom:16px}.empty-state h3{font-size:1.1rem;color:var(--gray-600);margin-bottom:8px;font-weight:700}.empty-state p{font-size:.88rem;max-width:400px;margin:0 auto 16px;color:var(--gray-400);line-height:1.7}.toast-container{position:fixed;top:20px;right:20px;z-index:2000;display:flex;flex-direction:column;gap:10px}.toast{padding:14px 20px;border-radius:var(--radius);color:#fff;font-size:.85rem;font-weight:600;box-shadow:var(--shadow-lg);animation:slideIn .35s cubic-bezier(.4,0,.2,1);min-width:280px;display:flex;align-items:center;gap:10px}.toast-success{background:linear-gradient(135deg,#22c55e,#16a34a)}.toast-error{background:linear-gradient(135deg,#ef4444,#dc2626)}.toast-warning{background:linear-gradient(135deg,#f59e0b,#d97706)}.toast-info{background:linear-gradient(135deg,#0ea5e9,#0284c7)}@keyframes slideIn{0%{transform:translate(100%) scale(.95);opacity:0}to{transform:translate(0) scale(1);opacity:1}}.chart-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(380px,1fr));gap:20px;margin-bottom:28px}.quick-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:28px}.quick-action-card{background:#fff;border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;align-items:center;gap:10px;cursor:pointer;border:1.5px solid var(--gray-100);transition:var(--transition);text-align:center}.quick-action-card:hover{border-color:var(--primary-light);background:var(--primary-bg);transform:translateY(-3px);box-shadow:var(--shadow-md)}.quick-action-card .qa-icon{font-size:2rem}.quick-action-card .qa-label{font-size:.82rem;font-weight:700;color:var(--gray-700)}.quick-action-card .qa-desc{font-size:.74rem;color:var(--gray-400);line-height:1.4}.pagination{display:flex;align-items:center;justify-content:center;gap:4px;padding:16px}.pagination button{width:34px;height:34px;border-radius:var(--radius-sm);border:1px solid var(--gray-200);background:#fff;color:var(--gray-600);font-size:.82rem;font-weight:600;display:flex;align-items:center;justify-content:center;transition:var(--transition);cursor:pointer}.pagination button:hover:not(:disabled){background:var(--primary-bg);border-color:var(--primary-light);color:var(--primary)}.pagination button.active{background:var(--primary);color:#fff;border-color:var(--primary)}.pagination button:disabled{opacity:.4;cursor:not-allowed}.pagination .page-info{font-size:.82rem;color:var(--gray-500);padding:0 8px;font-weight:500}.date-nav{display:flex;align-items:center;gap:6px}.date-nav-btn{background:#fff;border:1.5px solid var(--gray-200);width:36px;height:36px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--gray-600);font-weight:700;transition:var(--transition);font-size:1rem}.date-nav-btn:hover{background:var(--primary-bg);border-color:var(--primary-light);color:var(--primary)}.detail-header{display:flex;align-items:center;gap:20px;margin-bottom:28px;padding:24px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);border:1px solid var(--gray-100)}.detail-header .detail-info{flex:1}.detail-header .detail-info h2{font-size:1.4rem;font-weight:800;margin-bottom:4px}.detail-header .detail-info .detail-meta{display:flex;gap:16px;flex-wrap:wrap;margin-top:8px}.detail-header .detail-info .detail-meta span{font-size:.82rem;color:var(--gray-500);display:flex;align-items:center;gap:4px}.detail-header .detail-actions{display:flex;gap:8px}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin-bottom:24px}.info-item{display:flex;flex-direction:column;gap:4px}.info-item .info-label{font-size:.76rem;color:var(--gray-400);font-weight:700;text-transform:uppercase;letter-spacing:.04em}.info-item .info-value{font-size:.92rem;color:var(--gray-800);font-weight:500}.consultation-card{background:#fff;border-radius:var(--radius);border:1px solid var(--gray-100);padding:18px;margin-bottom:12px;transition:var(--transition)}.consultation-card:hover{box-shadow:var(--shadow-md)}.consultation-card .consult-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:10px}.consultation-card .consult-date{font-size:.82rem;color:var(--gray-400);font-weight:600}.consultation-card .consult-body{font-size:.88rem;color:var(--gray-700);line-height:1.7}.consultation-card .consult-student{font-size:.82rem;color:var(--gray-500);margin-top:8px;font-weight:500}.table-footer{padding:14px 22px;border-top:1px solid var(--gray-100);font-size:.82rem;color:var(--gray-500);display:flex;justify-content:space-between;align-items:center;font-weight:500}@media(max-width:768px){.mobile-menu-btn{display:flex}.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.open{display:block}.main-content{margin-left:0;padding:68px 16px 20px}.stats-grid{grid-template-columns:repeat(2,1fr)}.chart-grid,.form-row{grid-template-columns:1fr}.page-header{flex-direction:column;align-items:flex-start}.quick-actions{grid-template-columns:repeat(2,1fr)}}