@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=DM+Sans:wght@400;500;600&display=swap";:root{--primary: #4f46e5;--primary-light: #6366f1;--primary-dark: #4338ca;--accent-blue: #0ea5e9;--accent-teal: #14b8a6;--accent-violet: #8b5cf6;--accent-rose: #f43f5e;--accent-amber: #f59e0b;--accent-emerald: #10b981;--bg-main: #f8fafc;--bg-white: #ffffff;--bg-card: #ffffff;--bg-sidebar: #ffffff;--bg-input: #f1f5f9;--bg-hover: #f1f5f9;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--text-white: #ffffff;--border-light: #e2e8f0;--border-medium: #cbd5e1;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 8px 10px -6px rgba(0, 0, 0, .1);--shadow-primary: 0 4px 14px rgba(79, 70, 229, .25);--shadow-card: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px -1px rgba(0, 0, 0, .08);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:DM Sans,sans-serif;background:var(--bg-main);color:var(--text-primary);line-height:1.6;overflow-x:hidden;font-size:17px}h1,h2,h3,h4,h5,h6{font-family:Outfit,sans-serif;font-weight:600}h1{font-size:2.4rem}h2{font-size:2rem}h3{font-size:1.6rem}h4{font-size:1.3rem}.animated-bg{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;overflow:hidden;background:linear-gradient(135deg,#f0f4ff,#faf5ff,#ecfeff)}.animated-bg:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 20% 30%,rgba(79,70,229,.08) 0%,transparent 40%),radial-gradient(circle at 80% 70%,rgba(14,165,233,.08) 0%,transparent 40%),radial-gradient(circle at 50% 50%,rgba(139,92,246,.05) 0%,transparent 50%);animation:bgFloat 30s ease-in-out infinite}.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.4;animation:orbFloat 20s ease-in-out infinite}.orb-1{width:300px;height:300px;background:linear-gradient(135deg,#4f46e54d,#0ea5e933);top:10%;right:10%;animation-delay:0s}.orb-2{width:250px;height:250px;background:linear-gradient(135deg,#8b5cf64d,#f43f5e26);bottom:20%;left:5%;animation-delay:-7s}.orb-3{width:200px;height:200px;background:linear-gradient(135deg,#14b8a64d,#4f46e533);top:50%;left:40%;animation-delay:-14s}@keyframes bgFloat{0%,to{transform:translate(0) rotate(0)}33%{transform:translate(1%,1%) rotate(.5deg)}66%{transform:translate(-.5%,.5%) rotate(-.5deg)}}@keyframes orbFloat{0%,to{transform:translate(0) scale(1)}25%{transform:translate(20px,-20px) scale(1.03)}50%{transform:translate(-15px,15px) scale(.97)}75%{transform:translate(15px,10px) scale(1.01)}}.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;position:relative}.login-box{background:var(--bg-white);padding:48px;border-radius:var(--radius-xl);width:100%;max-width:440px;box-shadow:var(--shadow-xl);border:1px solid var(--border-light);position:relative;overflow:hidden;animation:loginAppear .6s ease-out}.login-box:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent-blue),var(--accent-violet))}@keyframes loginAppear{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.login-header{text-align:center;margin-bottom:36px}.login-header .logo-icon{width:72px;height:72px;background:linear-gradient(135deg,var(--primary),var(--accent-violet));border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:32px;box-shadow:var(--shadow-primary);animation:logoPulse 3s ease-in-out infinite}@keyframes logoPulse{0%,to{box-shadow:0 4px 14px #4f46e540;transform:scale(1)}50%{box-shadow:0 8px 25px #4f46e559;transform:scale(1.02)}}.login-header h1{font-size:2rem;font-weight:700;color:var(--text-primary);margin-bottom:8px;letter-spacing:-.5px}.login-header p{color:var(--text-secondary);font-size:.95rem}.form-group{margin-bottom:20px;position:relative}.form-group label{display:block;margin-bottom:8px;font-weight:500;color:var(--text-secondary);font-size:.9rem}.input-wrapper{position:relative}.input-wrapper .icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);font-size:1rem;opacity:.6;transition:opacity .3s}.form-group input{width:100%;padding:14px 16px 14px 48px;background:var(--bg-input);border:2px solid transparent;border-radius:var(--radius-md);font-size:1rem;color:var(--text-primary);transition:all .3s ease;font-family:DM Sans,sans-serif}.form-group input::placeholder{color:var(--text-muted)}.form-group input:focus{outline:none;border-color:var(--primary);background:var(--bg-white);box-shadow:0 0 0 4px #4f46e51a}.form-group input:focus~.icon,.input-wrapper:hover .icon{opacity:1}.btn-login{width:100%;padding:16px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-white);border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;font-family:Outfit,sans-serif;letter-spacing:.3px;position:relative;overflow:hidden;box-shadow:var(--shadow-primary)}.btn-login:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.btn-login:hover{transform:translateY(-2px);box-shadow:0 8px 20px #4f46e559}.btn-login:hover:before{left:100%}.btn-login:active{transform:translateY(0)}.btn-login:disabled{opacity:.6;cursor:not-allowed;transform:none}.error-message{background:#fef2f2;border:1px solid #fecaca;color:#dc2626;padding:14px 16px;border-radius:var(--radius-md);margin-bottom:20px;font-size:.9rem;display:flex;align-items:center;gap:10px;animation:shake .5s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-5px)}40%,80%{transform:translate(5px)}}.dashboard{min-height:100vh;display:flex;flex-direction:column}.dashboard-header{background:var(--bg-white);border-bottom:1px solid var(--border-light);padding:14px 28px;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.logo{display:flex;align-items:center;gap:14px}.logo-mark{width:44px;height:44px;background:linear-gradient(135deg,var(--primary),var(--accent-violet));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:var(--shadow-primary)}.logo-text h1{font-size:1.3rem;font-weight:700;color:var(--text-primary);line-height:1.2}.logo-text span{font-size:.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1.2px;font-weight:500}.header-right{display:flex;align-items:center;gap:16px}.user-info{display:flex;align-items:center;gap:12px;padding:8px 14px;background:var(--bg-input);border-radius:50px;border:1px solid var(--border-light)}.user-avatar-small{width:34px;height:34px;background:linear-gradient(135deg,var(--primary),var(--accent-blue));color:var(--text-white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:600;font-family:Outfit,sans-serif}.user-name{font-size:.9rem;font-weight:500;color:var(--text-primary)}.btn-logout{padding:10px 18px;background:var(--bg-white);color:var(--text-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);cursor:pointer;font-family:DM Sans,sans-serif;font-size:.9rem;transition:all .3s ease;display:flex;align-items:center;gap:8px}.btn-logout:hover{background:#fef2f2;border-color:#fecaca;color:#dc2626}.dashboard-content{display:flex;flex:1}.sidebar{width:260px;background:var(--bg-white);border-right:1px solid var(--border-light);padding:24px 14px;display:flex;flex-direction:column}.sidebar-section{margin-bottom:28px}.sidebar-title{font-size:.85rem;text-transform:uppercase;letter-spacing:1.2px;color:var(--text-muted);margin-bottom:10px;padding:0 12px;font-weight:600}.sidebar nav ul{list-style:none}.sidebar nav li{margin-bottom:4px}.sidebar nav li a,.sidebar nav li>span{padding:12px 14px;cursor:pointer;display:flex;align-items:center;gap:12px;color:var(--text-secondary);border-radius:var(--radius-md);transition:all .2s ease;font-size:1.05rem;text-decoration:none;position:relative}.sidebar nav li a:hover,.sidebar nav li>span:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar nav li.active>a,.sidebar nav li.active>span{background:linear-gradient(135deg,#4f46e51a,#0ea5e90d);color:var(--primary);font-weight:500}.sidebar nav li.active>a:before,.sidebar nav li.active>span:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;background:linear-gradient(180deg,var(--primary),var(--accent-blue));border-radius:0 4px 4px 0}.nav-icon{font-size:1.1rem;width:22px;text-align:center}.sidebar-footer{margin-top:auto;padding:16px 12px;border-top:1px solid var(--border-light)}.ai-status{display:flex;align-items:center;gap:12px;padding:14px;background:linear-gradient(135deg,#10b9811a,#14b8a60d);border-radius:var(--radius-md);border:1px solid rgba(16,185,129,.2)}.ai-dot{width:10px;height:10px;background:var(--accent-emerald);border-radius:50%;animation:aiPulse 2s ease-in-out infinite;box-shadow:0 0 8px #10b98180}@keyframes aiPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.7;transform:scale(1.15)}}.ai-status-text{font-size:.85rem;color:var(--accent-emerald);font-weight:500}.main-content{flex:1;padding:28px;overflow-y:auto;background:var(--bg-main)}.page-header{margin-bottom:28px;display:flex;justify-content:space-between;align-items:center}.page-header h2{font-size:2rem;font-weight:700;color:var(--text-primary)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-bottom:28px}.stat-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:22px;position:relative;overflow:hidden;transition:all .3s ease;box-shadow:var(--shadow-card)}.stat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--stat-color, var(--primary))}.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.stat-card.blue,.stat-card.cyan{--stat-color: var(--accent-blue)}.stat-card.mint{--stat-color: var(--accent-teal)}.stat-card.pink{--stat-color: var(--accent-rose)}.stat-card.orange{--stat-color: var(--accent-amber)}.stat-icon{width:52px;height:52px;background:linear-gradient(135deg,var(--stat-color, var(--primary)),transparent);opacity:.15;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:14px;position:relative}.stat-icon:after{content:attr(data-icon);position:absolute;font-size:1.7rem;opacity:1}.stat-value{font-family:Outfit,sans-serif;font-size:2.8rem;font-weight:700;color:var(--text-primary);margin-bottom:4px}.stat-label{font-size:1.1rem;color:var(--text-secondary)}.alert{padding:14px 18px;border-radius:var(--radius-md);margin-bottom:20px;display:flex;align-items:center;gap:10px;animation:slideDown .4s ease-out;font-size:.95rem}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.alert-success{background:#ecfdf5;border:1px solid #a7f3d0;color:#059669}.alert-error{background:#fef2f2;border:1px solid #fecaca;color:#dc2626}.profile-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-xl);padding:28px;max-width:680px;box-shadow:var(--shadow-card)}.profile-header{display:flex;align-items:center;gap:22px;margin-bottom:28px;padding-bottom:28px;border-bottom:1px solid var(--border-light)}.avatar{width:90px;height:90px;background:linear-gradient(135deg,var(--primary),var(--accent-blue));color:var(--text-white);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;font-family:Outfit,sans-serif;box-shadow:var(--shadow-primary)}.profile-info h3{font-size:1.8rem;margin-bottom:10px;color:var(--text-primary)}.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:50px;font-size:.9rem;font-weight:600;text-transform:uppercase;letter-spacing:.3px}.badge-admin{background:linear-gradient(135deg,#fef3c7,#fde68a);color:#b45309;border:1px solid #fcd34d}.badge-teacher{background:linear-gradient(135deg,#dbeafe,#bfdbfe);color:#1d4ed8;border:1px solid #93c5fd}.badge-expert{background:linear-gradient(135deg,#f3e8ff,#e9d5ff);color:#7c3aed;border:1px solid #c4b5fd}.badge-student{background:linear-gradient(135deg,#d1fae5,#a7f3d0);color:#059669;border:1px solid #6ee7b7}.profile-details{display:flex;flex-direction:column}.detail-row{display:flex;padding:14px 0;border-bottom:1px solid var(--border-light);align-items:center}.detail-row:last-of-type{border-bottom:none}.detail-row label{width:180px;color:var(--text-muted);font-weight:500;font-size:1.05rem}.detail-row span{color:var(--text-primary);font-weight:500;font-size:1.1rem}.profile-actions{margin-top:28px;display:flex;gap:14px}.btn{padding:12px 24px;border-radius:var(--radius-md);font-size:1.05rem;font-weight:600;cursor:pointer;transition:all .3s ease;border:none;font-family:Outfit,sans-serif;display:inline-flex;align-items:center;gap:8px}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-white);box-shadow:var(--shadow-primary)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px #4f46e54d}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-secondary{background:var(--bg-white);color:var(--text-secondary);border:1px solid var(--border-light)}.btn-secondary:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-medium)}.profile-form,.password-form{margin-top:24px}.password-form{padding-top:24px;border-top:1px solid var(--border-light)}.password-form h4{font-size:1.1rem;margin-bottom:18px;color:var(--text-primary);display:flex;align-items:center;gap:10px}.form-row{display:flex;gap:18px}.form-row .form-group{flex:1}.form-actions{display:flex;gap:14px;margin-top:24px}.loading-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg-main)}.spinner{width:48px;height:48px;border:3px solid var(--border-light);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-screen p{margin-top:16px;color:var(--text-secondary);font-size:.95rem}@media(max-width:1024px){.sidebar{width:220px}.stats-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.sidebar{display:none}.dashboard-header{padding:14px 18px}.main-content{padding:18px}.login-box{padding:32px 24px}.profile-header{flex-direction:column;text-align:center}.form-row{flex-direction:column}.detail-row{flex-direction:column;gap:6px;align-items:flex-start}.detail-row label{width:auto}.stats-grid{grid-template-columns:1fr}.profile-actions,.form-actions{flex-direction:column}.btn{width:100%;justify-content:center}.user-info{display:none}}.page-container{animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.page-subtitle{font-size:1.05rem;color:var(--text-muted);margin-top:4px}.search-box{margin-bottom:20px}.search-box input{width:100%;max-width:400px;padding:12px 16px;background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-md);font-size:1.05rem;color:var(--text-primary);transition:all .2s}.search-box input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51a}.filters-row .search-box{margin-bottom:0;flex:1;min-width:200px}.filter-select{padding:12px 16px;background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-md);font-size:1.05rem;color:var(--text-primary);cursor:pointer;min-width:160px}.table-container{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card)}.data-table{width:100%;border-collapse:collapse}.data-table th{background:var(--bg-input);padding:14px 16px;text-align:left;font-weight:600;font-size:.95rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border-light)}.data-table td{padding:14px 16px;border-bottom:1px solid var(--border-light);font-size:1.05rem;color:var(--text-primary)}.data-table tbody tr:last-child td{border-bottom:none}.data-table tbody tr:hover{background:var(--bg-hover)}.font-medium{font-weight:500}.text-muted{color:var(--text-muted);font-size:.95rem}.empty-row{text-align:center;color:var(--text-muted);padding:40px!important}.user-cell{display:flex;align-items:center;gap:12px}.user-avatar-mini{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--accent-blue));color:var(--text-white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:600;font-family:Outfit,sans-serif}.user-avatar-mini.student{background:linear-gradient(135deg,var(--accent-emerald),var(--accent-teal))}.user-avatar-mini.teacher{background:linear-gradient(135deg,var(--accent-violet),var(--primary))}.username-code,.password-code{font-family:Consolas,Monaco,monospace;background:var(--bg-input);padding:4px 8px;border-radius:4px;font-size:.85rem;color:var(--text-primary);border:1px solid var(--border-light)}.password-code{background:#fef3c7;border-color:#fcd34d;color:#92400e}.info-box{background:linear-gradient(135deg,#dbeafe,#e0e7ff);border:1px solid #93c5fd;color:#1e40af;padding:12px 16px;border-radius:var(--radius-md);margin-bottom:20px;font-size:.9rem}.subject-code{font-family:Consolas,Monaco,monospace;background:linear-gradient(135deg,#e0e7ff,#dbeafe);padding:6px 12px;border-radius:6px;font-size:.85rem;font-weight:600;color:#4338ca;border:1px solid #a5b4fc}.subject-cell{display:flex;align-items:center;gap:12px}.subject-icon{width:40px;height:40px;background:linear-gradient(135deg,#fef3c7,#fde68a);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.2rem}.text-truncate{max-width:300px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge-credit{background:#dbeafe;color:#1e40af;padding:4px 10px;border-radius:50px;font-size:.75rem;font-weight:600}.badge-hours{background:#d1fae5;color:#065f46;padding:4px 10px;border-radius:50px;font-size:.75rem;font-weight:600}.assignment-stats{display:flex;gap:16px;margin-bottom:20px;flex-wrap:wrap}.stat-mini{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:12px 20px;display:flex;align-items:center;gap:10px}.stat-mini .stat-number{font-size:1.5rem;font-weight:700;color:var(--primary)}.stat-mini .stat-text{font-size:.85rem;color:var(--text-muted)}.subject-code-sm{font-family:Consolas,Monaco,monospace;background:#e0e7ff;padding:2px 6px;border-radius:4px;font-size:.7rem;font-weight:600;color:#4338ca;display:inline-block;margin-bottom:2px}.filters-row{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.filter-select{padding:10px 14px;background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-sm);font-size:.9rem;color:var(--text-primary);min-width:180px;cursor:pointer}.filter-select:focus{outline:none;border-color:var(--primary)}.modal-body textarea{width:100%;padding:12px 14px;background:var(--bg-input);border:1px solid var(--border-light);border-radius:var(--radius-sm);font-size:.95rem;color:var(--text-primary);font-family:DM Sans,sans-serif;resize:vertical;min-height:80px;transition:all .2s}.modal-body textarea:focus{outline:none;border-color:var(--primary);background:var(--bg-white)}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-weight:400;padding:12px 0}.checkbox-label input[type=checkbox]{width:18px;height:18px;cursor:pointer}.status-badge{display:inline-block;padding:4px 10px;border-radius:50px;font-size:.75rem;font-weight:600}.status-badge.active{background:#dcfce7;color:#16a34a}.status-badge.inactive{background:#fee2e2;color:#dc2626}.badge-info{background:#dbeafe;color:#2563eb;padding:4px 10px;border-radius:50px;font-size:.75rem;font-weight:600}.action-buttons{display:flex;gap:8px}.btn-icon{width:34px;height:34px;border:none;border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:all .2s;background:transparent}.btn-icon.edit:hover{background:#dbeafe}.btn-icon.delete:hover{background:#fee2e2}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;animation:fadeIn .2s ease}.modal{background:var(--bg-white);border-radius:var(--radius-xl);width:100%;max-width:500px;max-height:90vh;overflow:hidden;box-shadow:var(--shadow-xl);animation:modalSlide .3s ease}.modal.modal-lg{max-width:650px}@keyframes modalSlide{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid 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.2s}.tab:hover{color:var(--text-primary)}.tab.active{color:var(--primary);border-bottom-color:var(--primary)}.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}.assignment-card{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-lg);overflow:hidden;transition:all .2s}.assignment-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.assignment-card .card-header{padding:16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-light);background:var(--bg-light)}.assignment-card .card-body{padding:16px;min-height:60px}.assignment-card .card-footer{padding:12px 16px;border-top:1px solid 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var(--border-light);border-radius:var(--radius-lg);padding:24px;margin-bottom:24px}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;margin-bottom:16px}.info-item{display:flex;flex-direction:column;gap:4px}.info-label{color:var(--text-muted);font-size:.9rem}.info-value{color:var(--text-primary);font-size:1.1rem;font-weight:600}.task-description-box{padding-top:16px;border-top:1px solid var(--border-light);color:var(--text-secondary);line-height:1.6}.task-description-box strong{color:var(--text-primary)}.submissions-stats{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap}.stat-pill{display:flex;align-items:center;gap:8px;padding:10px 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16px}.result-score{margin-bottom:8px}.score-value{font-size:64px;font-weight:700;color:#4f46e5}.score-max{font-size:24px;color:#94a3b8}.result-text{font-size:16px;color:#64748b;margin-bottom:24px}.result-details{max-width:500px;margin:0 auto 24px}.result-details table{width:100%;border-collapse:collapse}.result-details th{background:#f8fafc;padding:10px;font-size:12px;color:#64748b;text-align:left}.result-details td{padding:10px;font-size:14px;border-bottom:1px solid #e2e8f0}.result-details tr.correct td{background:#d1fae5}.result-details tr.wrong td{background:#fee2e2}.result-actions{display:flex;gap:12px;justify-content:center}.btn-warning{background:#f59e0b!important}.modal.modal-xl{width:95%;max-width:950px;max-height:95vh}.modal.modal-xl .modal-body{max-height:calc(95vh - 120px);overflow-y:auto}.ip-simulator{background:#fff;border-radius:20px;padding:24px;max-width:800px;margin:0 auto}.ip-classes-info{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin:30px 0}.ip-class-card{background:#f8fafc;border-radius:12px;padding:20px;width:180px;text-align:center;border:2px solid transparent;transition:all .2s}.ip-class-card:hover{transform:translateY(-4px)}.ip-class-card.class-a{border-color:#ef4444;background:linear-gradient(135deg,#fef2f2,#fee2e2)}.ip-class-card.class-b{border-color:#f59e0b;background:linear-gradient(135deg,#fffbeb,#fef3c7)}.ip-class-card.class-c{border-color:#22c55e;background:linear-gradient(135deg,#f0fdf4,#dcfce7)}.ip-class-card h4{font-size:20px;margin:0 0 12px;color:#1e293b}.class-range{font-size:13px;color:#64748b;margin-bottom:8px}.class-mask{font-family:monospace;font-size:14px;color:#1e293b;font-weight:600;margin-bottom:8px}.class-hosts{font-size:12px;color:#64748b}.question-card{background:#f8fafc;border-radius:16px;padding:24px;margin-bottom:24px}.ip-display{text-align:center;margin-bottom:30px}.ip-display .ip-label{display:block;font-size:14px;color:#64748b;margin-bottom:12px}.ip-octets{display:inline-flex;align-items:center;background:linear-gradient(135deg,#4f46e5,#7c3aed);padding:16px 32px;border-radius:16px}.ip-octets .octet{font-size:36px;font-weight:700;color:#fff;font-family:monospace}.ip-octets .dot{font-size:36px;color:#fff9;margin:0 4px}.answer-sections{display:flex;flex-direction:column;gap:24px}.answer-section{background:#fff;border-radius:12px;padding:16px}.answer-section label{display:block;font-size:14px;font-weight:600;color:#1e293b;margin-bottom:12px}.class-buttons{display:flex;gap:12px;flex-wrap:wrap}.class-btn{flex:1;min-width:120px;padding:16px;border:2px solid #e2e8f0;background:#fff;border-radius:12px;cursor:pointer;transition:all .2s;text-align:center}.class-btn:hover:not(:disabled){border-color:var(--class-color);background:#f8fafc}.class-btn.selected{border-color:var(--class-color);background:linear-gradient(135deg,#f8fafc,#f1f5f9)}.class-btn.correct{border-color:#22c55e!important;background:#d1fae5!important}.class-btn.wrong{border-color:#ef4444!important;background:#fee2e2!important}.class-btn .class-range{display:block;font-size:12px;color:#64748b;margin-top:4px}.mask-buttons{display:flex;gap:12px;flex-wrap:wrap}.mask-btn{flex:1;padding:12px 16px;border:2px solid #e2e8f0;background:#fff;border-radius:10px;cursor:pointer;font-family:monospace;font-size:14px;transition:all .2s}.mask-btn:hover:not(:disabled){border-color:#4f46e5;background:#eef2ff}.mask-btn.selected{border-color:#4f46e5;background:#eef2ff}.mask-btn.correct{border-color:#22c55e!important;background:#d1fae5!important}.mask-btn.wrong{border-color:#ef4444!important;background:#fee2e2!important}.ip-input-group{display:flex;align-items:center;justify-content:center;gap:4px}.ip-input-wrapper{display:flex;align-items:center}.ip-input{width:70px;padding:12px;border:2px solid #e2e8f0;border-radius:10px;font-size:18px;font-family:monospace;text-align:center;transition:all .2s}.ip-input:focus{outline:none;border-color:#4f46e5}.ip-input.correct{border-color:#22c55e;background:#d1fae5}.ip-input.wrong{border-color:#ef4444;background:#fee2e2}.ip-input-wrapper .dot{font-size:24px;color:#64748b;margin:0 4px}.hosts-input-group{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.hosts-input{width:200px;padding:12px 16px;border:2px solid #e2e8f0;border-radius:10px;font-size:18px;font-family:monospace;transition:all .2s}.hosts-input:focus{outline:none;border-color:#4f46e5}.hosts-input.correct{border-color:#22c55e;background:#d1fae5}.hosts-input.wrong{border-color:#ef4444;background:#fee2e2}.hosts-hint{font-size:12px;color:#64748b;font-style:italic}.feedback-hint{margin-top:8px;padding:8px 12px;background:#dbeafe;border-radius:8px;font-size:13px;color:#1e40af}.progress-bar{width:200px;height:8px;background:#e2e8f0;border-radius:4px;overflow:hidden;margin-top:8px}.progress-fill{height:100%;background:linear-gradient(90deg,#4f46e5,#7c3aed);border-radius:4px;transition:width .3s ease}.result-summary{max-width:600px;margin:0 auto 24px}.result-item{background:#f8fafc;border-radius:12px;padding:16px;margin-bottom:12px}.result-ip{display:flex;align-items:center;gap:12px;margin-bottom:12px}.result-ip .ip-label{font-size:13px;color:#64748b}.result-ip .ip-value{font-family:monospace;font-size:16px;font-weight:600;color:#1e293b}.ip-class-badge{padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600;color:#fff}.result-checks{display:flex;gap:12px;flex-wrap:wrap;font-size:13px}.result-checks span.correct{color:#22c55e}.result-checks span.wrong{color:#ef4444}.ai-score-label{font-size:14px;font-weight:600;color:#64748b;margin-bottom:12px;text-align:center}