@import"https://fonts.googleapis.com/css2?family=Outfit:wght@400;600;700;800&family=DM+Sans:wght@400;500;600;700&display=swap";:root{--primary: #00693E;--primary-dark: #003d24;--primary-light: #eaf4f0;--accent: #B9D9EB;--danger: #c0392b;--warning: #d97706;--success: #16a34a;--text-main: #0d2416;--text-muted: #6b8fa3;--bg-body: #f8fafc;--border: #e2e8f0;--scrollbar-track: #f1f5f9;--scrollbar-thumb: rgba(0,105,62,.2);--scrollbar-thumb-hover: rgba(0,105,62,.38)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}.app{font-family:DM Sans,sans-serif;background:var(--bg-body);color:var(--text-main);min-height:100vh}.app-dashboard{display:flex}button,input,select,textarea{font-family:inherit}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2.5px solid var(--primary);outline-offset:2px}*{scrollbar-width:thin;scrollbar-color:var(--scrollbar-thumb) var(--scrollbar-track)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--scrollbar-track);border-radius:99px}::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#00693e4d,#00693e2e);border-radius:99px;border:1.5px solid transparent;background-clip:padding-box;-webkit-transition:background .2s;transition:background .2s}::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#00693e8c,#00693e52);background-clip:padding-box;border:1.5px solid transparent}::-webkit-scrollbar-corner{background:transparent}.fullpage-loading,.fullpage-error{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px;text-align:center;color:var(--text-muted)}.spinner-dark{border-color:#00693e33;border-top-color:var(--primary);width:28px;height:28px}.spinner{display:inline-block;width:16px;height:16px;border:2.5px solid rgba(0,105,62,.18);border-top-color:var(--primary);border-radius:50%;animation:spin .75s linear infinite;vertical-align:middle}.btn-loading{opacity:.72;cursor:not-allowed;pointer-events:none;position:relative}.panel-loading{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:40px 24px;color:var(--text-muted);text-align:center}.skel-line{background:linear-gradient(90deg,#e2e8f0,#eaf2ed 40%,#e2e8f0 60%,#e2e8f0);background-size:260% 100%;border-radius:6px;animation:skel-shimmer 1.3s infinite}.skel-shimmer{background:linear-gradient(90deg,#f1f5f9,#e6ecef 40%,#f1f5f9 60%,#f1f5f9);background-size:260% 100%;animation:skel-shimmer 1.3s infinite;position:relative;overflow:hidden}@keyframes skel-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.sidebar-fade{opacity:.96}.sidebar{width:260px;background:#fff;border-right:1px solid var(--border);padding:22px 18px;display:flex;flex-direction:column;flex-shrink:0;height:100vh;position:sticky;top:0;overflow:hidden}.sb-brand{display:flex;align-items:center;gap:10px;margin-bottom:26px}.sb-brand-link{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;width:100%}.sb-brand-link:hover .sb-logo{background:var(--primary-dark)}.sb-logo{width:36px;height:36px;background:var(--primary);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;transition:background .15s}.sb-name{font-weight:800;font-size:13.5px}.sb-sub{font-size:10.5px;color:var(--text-muted)}.sb-menu{display:flex;flex-direction:column;gap:4px}.sb-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--text-muted);font-weight:700;font-size:12.5px;cursor:pointer;transition:all .15s;background:none;border:none;text-align:left;text-decoration:none;width:100%;line-height:1.3}.sb-item:hover:not(:disabled){background:#f1f5f9;color:var(--text-main)}.sb-item-link:hover{color:var(--primary)}.sb-item-active{background:var(--primary);color:#fff;cursor:default}.sb-item-active:hover{background:var(--primary);color:#fff}.sb-footer{margin-top:auto;padding-top:16px;border-top:1px solid var(--border)}.sb-footer-card{display:flex;flex-direction:column;gap:10px;padding:12px;background:linear-gradient(180deg,#f9fbfc,#fff);border:1px solid var(--border);border-radius:14px}.sb-footer-row{display:flex;align-items:center;gap:10px}.sb-footer-info{min-width:0}.sb-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:12.5px;flex-shrink:0}.sb-avatar-lg{width:38px;height:38px;font-size:14px}.sb-teacher-name{font-weight:700;font-size:12.5px}.sb-teacher-token{font-size:10.5px;color:var(--text-muted)}.sb-role-label{margin-top:2px;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--primary)}.sb-footer-actions{display:flex}.btn-logout{width:100%;justify-content:center;border-color:var(--border)!important;color:var(--danger)!important;background:#fff}.btn-logout:hover{background:#fff5f5!important;border-color:#c0392b59!important}.main{flex:1;padding:30px 34px;min-width:0}.main-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;flex-wrap:wrap;gap:12px}.main-title{font-family:Outfit,sans-serif;font-weight:800;font-size:21px}.main-sub{color:var(--text-muted);font-size:12.5px;margin-top:3px}.btn-create{width:auto;padding:11px 20px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:22px}.stat-card{background:#fff;padding:17px 18px;border-radius:14px;border:1px solid var(--border);display:flex;flex-direction:column;gap:5px;transition:transform .2s cubic-bezier(.22,1,.36,1),box-shadow .2s cubic-bezier(.22,1,.36,1),border-color .2s cubic-bezier(.22,1,.36,1)}.stat-card:hover{transform:translateY(-1px);box-shadow:0 4px 14px #0000000b;border-color:#00693e2e}.stat-label{font-size:10.5px;font-weight:800;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.stat-value{font-family:Outfit,sans-serif;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;transition:color .25s cubic-bezier(.22,1,.36,1),transform .25s cubic-bezier(.22,1,.36,1)}.stat-warning{color:var(--warning)}.stat-success{color:var(--success)}.toolbar{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap;align-items:center}.search-box{display:flex;align-items:center;gap:8px;background:#fff;border:1.5px solid var(--border);border-radius:10px;padding:9px 13px;flex:1;min-width:200px;color:var(--text-muted)}.search-box input{border:none;outline:none;flex:1;font-size:13px;color:var(--text-main);background:none}.filter-pills{display:flex;gap:6px;flex-wrap:wrap}.pill{padding:8px 14px;border-radius:20px;border:1.5px solid var(--border);background:#fff;color:var(--text-muted);font-size:12px;font-weight:700;cursor:pointer;transition:all .15s}.pill:hover{border-color:var(--primary);color:var(--primary)}.pill-active{background:var(--primary);border-color:var(--primary);color:#fff}.task-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px}.task-card{background:#fff;border-radius:15px;border:1px solid var(--border);padding:17px;display:flex;flex-direction:column;transition:all .2s;position:relative}.task-card:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0000000f;border-color:var(--primary)}.task-card-dim{opacity:.68}.task-card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.mini-toggle{width:26px;height:26px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s}.mini-toggle-on{background:var(--primary-light);color:var(--primary);border-color:var(--primary-light)}.mini-toggle:hover{border-color:var(--primary);color:var(--primary)}.badge{padding:3px 10px;border-radius:99px;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.03em}.badge-active{background:#dcfce7;color:#166534;box-shadow:0 0 #16a34a00;animation:pulseBadgeActive 2.2s cubic-bezier(.4,0,.6,1) infinite}.badge-closed{background:#f1f5f9;color:#64748b}.badge-archived{background:#fee2e2;color:#991b1b}@keyframes pulseBadgeActive{0%{box-shadow:0 0 #16a34a52}70%{box-shadow:0 0 0 6px #16a34a00}to{box-shadow:0 0 #16a34a00}}.task-subject{font-size:10.5px;font-weight:800;color:var(--primary);text-transform:uppercase;margin-bottom:5px}.task-title{font-family:Outfit,sans-serif;font-size:15.5px;font-weight:800;margin-bottom:8px;line-height:1.3}.task-meta{display:flex;flex-direction:column;gap:5px;margin-bottom:14px;padding-bottom:14px;border-bottom:1px solid var(--border)}.meta-row{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--text-muted);font-weight:600}.meta-row svg{opacity:.6;flex-shrink:0}.task-footer{display:flex;justify-content:space-between;align-items:flex-end;margin-top:auto;gap:10px}.task-progress{flex:1}.progress-label{display:flex;justify-content:space-between;font-size:9.5px;font-weight:800;color:var(--text-muted);margin-bottom:5px}.progress-bar{height:5px;background:#f1f5f9;border-radius:99px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),#18a062);border-radius:99px;transition:width .85s cubic-bezier(.22,1,.36,1)}.btn-manage{background:var(--primary);color:#fff;padding:8px 15px;border-radius:9px;font-size:12px;font-weight:700;border:none;cursor:pointer;transition:background .15s;white-space:nowrap}.btn-manage:hover{background:var(--primary-dark)}.chip{display:inline-flex;align-items:center;gap:3px;padding:3px 8px;border-radius:99px;font-size:10px;font-weight:700}.chip-blue{background:#eff6ff;color:#1d4ed8}.chip-green{background:#dcfce7;color:#166534}.chip-gray{background:#f1f5f9;color:#475569}.chip-orange{background:#fff7ed;color:#c2410c}.empty-state{grid-column:1/-1;text-align:center;padding:50px 20px;color:var(--text-muted)}.empty-icon{font-size:38px;margin-bottom:10px;opacity:.5}.empty-state h3{font-family:Outfit,sans-serif;margin-bottom:5px;color:var(--text-main)}.empty-state p{font-size:13px}.panel-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0d241666;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:100;display:flex;justify-content:center;align-items:center;padding:20px;animation:overlayIn .2s ease}@keyframes overlayIn{0%{opacity:0}to{opacity:1}}.panel{width:100%;max-width:900px;max-height:90vh;background:#fff;overflow-y:auto;animation:modalIn .25s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;border-radius:18px;box-shadow:0 24px 64px #00281438}@keyframes modalIn{0%{transform:translateY(14px) scale(.97);opacity:0}to{transform:none;opacity:1}}.panel-head{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:22px 24px;display:flex;justify-content:space-between;align-items:flex-start;flex-shrink:0;border-radius:18px 18px 0 0}.panel-eyebrow{font-size:10.5px;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:#b9d9eb99;margin-bottom:4px}.panel-title{font-family:Outfit,sans-serif;font-weight:800;font-size:17px;color:#fff;margin-bottom:5px}.panel-sub{display:flex;align-items:center;gap:5px;font-size:11.5px;color:#b9d9ebb3}.btn-close{background:#ffffff1f;border:none;color:#fff;width:32px;height:32px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s}.btn-close:hover{background:#ffffff38}.panel-edit-form{padding:22px 24px;display:flex;flex-direction:column;background:#fff;border-bottom:1px solid var(--border)}.panel-edit-form .field-label{margin:14px 0 6px}.panel-edit-form .field-label:first-child{margin-top:0}.panel-edit-form .field-hint{font-weight:400;color:var(--text-muted);margin-left:6px}.panel-edit-actions{display:flex;gap:10px;margin-top:18px}.panel-edit-actions .btn-primary-full{flex:1;margin-top:0}.panel-edit-actions .btn-secondary{flex:0 0 auto}.panel-controls{display:flex;gap:22px;padding:16px 24px;border-bottom:1px solid var(--border);background:#fafcfb;flex-wrap:wrap}.toggle-row{display:flex;align-items:center;gap:9px;cursor:pointer}.toggle-row-disabled{opacity:.6;cursor:not-allowed;pointer-events:none}.toggle-label{font-size:12px;font-weight:700;color:var(--text-main)}.toggle{width:38px;height:22px;border-radius:99px;background:#e2e8f0;border:none;position:relative;cursor:pointer;transition:background .2s;flex-shrink:0}.toggle-on{background:var(--primary)}.toggle-knob{position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 3px #0003}.toggle-on .toggle-knob{transform:translate(16px)}.panel-actions{display:flex;gap:8px;padding:14px 24px;flex-wrap:wrap;border-bottom:1px solid var(--border)}.btn-secondary-danger{border-color:var(--danger)!important;color:var(--danger)!important}.btn-secondary-danger:hover{background:#fef2f2!important}.panel-search{display:flex;align-items:center;gap:8px;margin:16px 24px 8px;padding:9px 13px;background:var(--bg-body);border:1.5px solid var(--border);border-radius:10px;color:var(--text-muted)}.panel-search input{border:none;outline:none;background:none;flex:1;font-size:13px;color:var(--text-main)}.tbl-wrap{padding:8px 24px 24px;overflow-x:auto}.adm-table{width:100%;border-collapse:collapse;min-width:480px;font-size:12.5px}.adm-table th{padding:10px 12px;text-align:left;font-size:9.5px;font-weight:800;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;background:var(--bg-body);border-bottom:1.5px solid var(--border)}.adm-table td{padding:11px 12px;border-bottom:1px solid #f1f5f9;vertical-align:middle}.cell-name{font-weight:700}.cell-sub{font-size:11px;color:var(--text-muted)}.empty-cell{text-align:center;color:var(--text-muted);padding:30px!important}.grade-display{background:none;border:1px dashed var(--border);border-radius:8px;padding:5px 12px;cursor:pointer;font-size:12.5px;transition:all .2s cubic-bezier(.22,1,.36,1)}.grade-display:hover{border-color:var(--primary);background:var(--primary-light);transform:translateY(-.5px)}.grade-number{font-weight:800;color:var(--primary);font-family:Outfit,sans-serif;font-variant-numeric:tabular-nums}.grade-placeholder{color:var(--text-muted);font-size:11px}.grade-input{width:56px;padding:5px 8px;border:1.5px solid var(--primary);border-radius:8px;font-size:12.5px;text-align:center;outline:none;font-family:Outfit,sans-serif;font-variant-numeric:tabular-nums;transition:box-shadow .2s cubic-bezier(.22,1,.36,1)}.grade-input:focus{box-shadow:0 0 0 3px #00693e1a}.grade-editor{display:flex;flex-direction:column;gap:7px;min-width:180px}.grade-editor-row{display:flex;align-items:center;gap:7px}.grade-feedback-input{width:100%;padding:7px 10px;border:1.5px solid var(--border);border-radius:8px;font-size:11.5px;outline:none;resize:vertical;font-family:inherit;color:var(--text-main)}.grade-feedback-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #00693e1a}.grade-feedback-chip{display:inline-flex;align-items:center;gap:4px;margin-left:7px;padding:2px 7px;border-radius:99px;background:#eff6ff;color:#1d4ed8;font-size:10px;font-weight:700}.row-actions{display:flex;gap:5px}.btn-icon{width:28px;height:28px;border-radius:7px;border:1px solid var(--border);background:#fff;color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s;text-decoration:none}.btn-icon:hover{border-color:var(--primary);color:var(--primary)}.btn-icon-success{border-color:#16a34a!important;color:#16a34a!important;background:#f0fdf4!important}.btn-icon-success:hover{border-color:#15803d!important;color:#166534!important}.btn-icon-danger:hover{border-color:var(--danger);color:var(--danger);background:#fef2f2}.modal-box{width:100%;max-width:460px;max-height:90vh;background:#fff;overflow-y:auto;animation:modalIn .25s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;border-radius:18px;box-shadow:0 24px 64px #00281438}.modal-head{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:22px 24px;display:flex;justify-content:space-between;align-items:flex-start;flex-shrink:0;border-radius:18px 18px 0 0}.btn-close-light{background:#ffffff1f}.modal-body{padding:22px 24px;display:flex;flex-direction:column;gap:4px}.field-label{font-size:11.5px;font-weight:700;color:var(--text-main);margin:10px 0 6px;display:block}.inp{width:100%;padding:10px 13px;border:1.5px solid var(--border);border-radius:10px;font-size:13px;color:var(--text-main);outline:none;transition:border-color .15s;background:#fff;font-family:inherit}.inp:focus{border-color:var(--primary);box-shadow:0 0 0 3px #00693e1a}.class-pills{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}.btn-primary-full{width:100%;background:var(--primary);color:#fff;border:none;border-radius:11px;padding:13px;font-size:13.5px;font-weight:700;cursor:pointer;margin-top:18px;display:flex;align-items:center;justify-content:center;gap:8px;transition:background .15s,transform .1s}.btn-primary-full:hover:not(:disabled){background:var(--primary-dark)}.btn-primary-full:active:not(:disabled){transform:scale(.98)}.btn-primary-full:disabled{opacity:.7;cursor:not-allowed}.btn-secondary{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1.5px solid var(--primary);color:var(--primary);padding:9px 14px;border-radius:10px;font-size:12.5px;font-weight:700;cursor:pointer;text-decoration:none;transition:background .15s}.btn-secondary:hover{background:var(--primary-light)}.field-error{color:var(--danger);font-size:12px;font-weight:600;margin-top:6px}.field-error-center{text-align:center}.gate-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.gate-card{background:#fff;border-radius:22px;border:1px solid var(--border);box-shadow:0 8px 32px #003d241f;width:100%;max-width:380px;padding:36px 30px;text-align:center;animation:fadeUp .4s ease both}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}.gate-icon{color:var(--primary);margin-bottom:10px;display:flex;justify-content:center}.gate-title{font-family:Outfit,sans-serif;font-weight:800;font-size:22px;margin-bottom:6px}.gate-sub{font-size:13px;color:var(--text-muted);margin-bottom:22px}.token-input{width:100%;border:2px solid var(--border);border-radius:12px;padding:13px 16px;font-size:18px;font-family:Outfit,sans-serif;font-weight:700;letter-spacing:.12em;text-align:center;text-transform:uppercase;outline:none;color:var(--text-main);transition:border-color .15s}.token-input:focus{border-color:var(--primary)}.token-input-error{border-color:var(--danger)}.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(185,217,235,.35);border-top-color:var(--accent);animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast-stack{position:fixed;bottom:20px;right:20px;display:flex;flex-direction:column-reverse;gap:8px;z-index:200;max-width:340px}.toast{display:flex;align-items:center;gap:9px;padding:12px 16px;border-radius:11px;font-size:12.5px;font-weight:600;box-shadow:0 6px 20px #00000026;animation:toastIn .25s ease both}@keyframes toastIn{0%{opacity:0;transform:translate(12px)}to{opacity:1;transform:none}}.toast-success{background:var(--success);color:#fff}.toast-info{background:var(--primary-dark);color:var(--accent)}.toast-error{background:var(--danger);color:#fff}@media (max-width: 900px){.sidebar{display:none}.main{padding:20px}}@media (prefers-reduced-motion: reduce){.panel,.modal-box,.toast,.gate-card{animation:none}}