@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";
@media (max-width:768px){.hidden-mobile{display:none!important}}:root{--primary-50:#eef2ff;--primary-100:#e0e7ff;--primary-200:#c7d2fe;--primary-300:#a5b4fc;--primary-400:#818cf8;--primary-500:#6366f1;--primary-600:#4f46e5;--primary-700:#4338ca;--primary-800:#3730a3;--primary-900:#312e81;--accent-400:#34d399;--accent-500:#10b981;--accent-600:#059669;--gray-50:#f8fafc;--gray-100:#f1f5f9;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-400:#94a3b8;--gray-500:#64748b;--gray-600:#475569;--gray-700:#334155;--gray-800:#1e293b;--gray-900:#0f172a;--gray-950:#020617;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--info:#3b82f6;--bg-primary:#0f0f23;--bg-secondary:#151530;--bg-card:#1e1e3c99;--bg-card-hover:#282850cc;--bg-glass:#ffffff0d;--border-color:#ffffff14;--border-color-hover:#ffffff26;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 12px #0006;--shadow-lg:0 8px 32px #00000080;--shadow-glow:0 0 40px #6366f126;--transition-fast:.15s cubic-bezier(.4,0,.2,1);--transition-base:.25s cubic-bezier(.4,0,.2,1);--transition-slow:.35s cubic-bezier(.4,0,.2,1)}[data-theme=light]{--bg-primary:#f8f9fc;--bg-secondary:#fff;--bg-card:#fff;--bg-card-hover:#fff;--bg-glass:#00000005;--border-color:#00000012;--border-color-hover:#00000026;--text-primary:#1e293b;--text-secondary:#475569;--text-muted:#94a3b8;--shadow-sm:0 1px 2px #0000000a;--shadow-md:0 4px 12px #0000000f;--shadow-lg:0 8px 32px #0000001a;--shadow-glow:0 0 40px #6366f114}[data-theme=light] .sidebar{background:linear-gradient(#1e1b4b 0%,#312e81 40%,#3730a3 100%);border-right-color:#0000;box-shadow:4px 0 24px #1e1b4b4d}[data-theme=light] .sidebar.collapsed .nav-item{color:#ffffffb3}[data-theme=light] .sidebar.collapsed .nav-item.active{color:#fff;background:#ffffff26}[data-theme=light] .sidebar-toggle-btn,[data-theme=light] .sidebar.collapsed .sidebar-toggle-btn{background:linear-gradient(135deg,var(--primary-500),var(--primary-600));box-shadow:2px 0 12px #6366f133}[data-theme=light] .sidebar-toggle-btn:hover{background:linear-gradient(135deg,var(--primary-400),var(--primary-500));box-shadow:3px 0 16px #6366f159}[data-theme=light] .nav-item{color:#ffffffa6}[data-theme=light] .nav-item:hover{color:#fffffff2;background:#ffffff14}[data-theme=light] .nav-item.active{color:#fff;background:#ffffff26;box-shadow:inset 3px 0 #818cf8}[data-theme=light] .content-header{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffd9;border-bottom-color:#0000000f}[data-theme=light] .stat-card,[data-theme=light] .card{background:#fff;border-color:#0000000f;box-shadow:0 1px 3px #0000000a}[data-theme=light] input,[data-theme=light] select,[data-theme=light] textarea{color:#1e293b;background:#f8fafc;border-color:#00000026}[data-theme=light] .modal-content{background:#fff;border-color:#0000001a}[data-theme=light] .table-container th{color:#475569;background:#f1f5f9}[data-theme=light] .table-container td{border-bottom-color:#0000000f}[data-theme=light] .sidebar-user{background:#00000026;border-top-color:#ffffff1a}[data-theme=light] .sidebar-user .user-name{color:#fff}[data-theme=light] .sidebar-user .user-role{color:#fff9}[data-theme=light] .sidebar-user .logout-btn{color:#ffffffb3}[data-theme=light] .sidebar-user .logout-btn:hover{color:#fca5a5;background:#ef444433}[data-theme=light] .sidebar-header .logo-text h2{color:#fff}[data-theme=light] .sidebar-header .logo-text span{color:#ffffff80}[data-theme=light] .sidebar.collapsed .nav-item:hover:after{color:#f1f5f9;background:#1e293b;border-color:#ffffff1a}[data-theme=light] .notif-dropdown{background:#fff;border-color:#0000001a;box-shadow:0 20px 60px #00000026}[data-theme=light] .login-card{background:#fffffff2;border-color:#0000001a}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;overflow-x:hidden}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6;overflow-x:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--gray-700);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--gray-600)}.login-container{background:var(--bg-primary);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex;position:relative;overflow:hidden}.login-container:before{content:"";background:radial-gradient(circle,#6366f126 0%,#0000 70%);border-radius:50%;width:600px;height:600px;animation:8s ease-in-out infinite float;position:absolute;top:-200px;right:-200px}.login-container:after{content:"";background:radial-gradient(circle,#10b9811a 0%,#0000 70%);border-radius:50%;width:400px;height:400px;animation:10s ease-in-out infinite reverse float;position:absolute;bottom:-100px;left:-100px}@keyframes float{0%,to{transform:translate(0)scale(1)}50%{transform:translate(30px,-30px)scale(1.05)}}.login-card{background:var(--bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:var(--radius-xl);z-index:1;width:100%;max-width:440px;box-shadow:var(--shadow-lg),var(--shadow-glow);padding:48px;position:relative}.login-logo{text-align:center;margin-bottom:36px}.login-logo .logo-icon{background:linear-gradient(135deg,var(--primary-500),var(--primary-700));border-radius:20px;justify-content:center;align-items:center;width:72px;height:72px;margin:0 auto 16px;font-size:36px;display:flex;box-shadow:0 8px 32px #6366f14d}.login-logo h1{background:linear-gradient(135deg,var(--primary-300),var(--accent-400));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:24px;font-weight:800}.login-logo p{color:var(--text-secondary);margin-top:4px;font-size:14px}.form-group{margin-bottom:20px}.form-group label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;font-size:13px;font-weight:600;display:block}.form-input{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;color:var(--text-primary);transition:all var(--transition-base);outline:none;padding:14px 16px;font-family:inherit;font-size:15px}.form-input:focus{border-color:var(--primary-500);background:#6366f10d;box-shadow:0 0 0 3px #6366f126}.form-input::placeholder{color:var(--text-muted)}.form-select{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;color:var(--text-primary);transition:all var(--transition-base);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-position:right 16px center;background-repeat:no-repeat;outline:none;padding:14px 16px;font-family:inherit;font-size:15px}.form-select:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px #6366f126}.form-select option{background:var(--bg-secondary);color:var(--text-primary)}textarea.form-input{resize:vertical;min-height:100px}.btn{border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);white-space:nowrap;border:none;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-family:inherit;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.btn:active{transform:scale(.97)}.btn-primary{background:linear-gradient(135deg,var(--primary-500),var(--primary-600));color:#fff;box-shadow:0 4px 16px #6366f14d}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-400),var(--primary-500));transform:translateY(-1px);box-shadow:0 6px 24px #6366f166}.btn-success{background:linear-gradient(135deg,var(--accent-500),var(--accent-600));color:#fff;box-shadow:0 4px 16px #10b9814d}.btn-success:hover{transform:translateY(-1px);box-shadow:0 6px 24px #10b98166}.btn-danger{background:linear-gradient(135deg,var(--danger),#dc2626);color:#fff}.btn-ghost{background:var(--bg-glass);color:var(--text-secondary);border:1px solid var(--border-color)}.btn-ghost:hover{background:var(--bg-card-hover);color:var(--text-primary);border-color:var(--border-color-hover)}.btn-sm{padding:8px 16px;font-size:13px}.btn-lg{padding:16px 32px;font-size:16px}.btn-full{width:100%}.btn-icon{border-radius:var(--radius-sm);width:40px;height:40px;padding:0}.dashboard-layout{min-height:100vh;display:flex}.sidebar{z-index:100;background:linear-gradient(#0f0a2e 0%,#1a1545 40%,#1e1b4b 100%);border-right:1px solid #ffffff0f;flex-direction:column;width:280px;height:100vh;transition:width .3s cubic-bezier(.4,0,.2,1);display:flex;position:fixed;top:0;left:0;overflow:hidden;box-shadow:4px 0 32px #0000004d}.sidebar.collapsed{width:72px}.sidebar-header{border-bottom:1px solid #ffffff14;justify-content:space-between;align-items:center;min-height:72px;padding:20px;display:flex}.sidebar.collapsed .sidebar-header{justify-content:center;gap:0;padding:20px 16px}.sidebar-header .logo-row{align-items:center;gap:12px;display:flex;overflow:hidden}.sidebar.collapsed .sidebar-header .logo-row{gap:0}.sidebar-header .logo-box{background:linear-gradient(135deg,var(--primary-500),var(--primary-700));border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;display:flex}.sidebar-header .logo-text{white-space:nowrap;opacity:1;transition:opacity .2s .1s,width .2s}.sidebar.collapsed .sidebar-header .logo-text{opacity:0;pointer-events:none;width:0;transition:opacity .1s,width .1s;overflow:hidden}.sidebar-header .logo-text h2{color:#fff;font-size:15px;font-weight:700}.sidebar-header .logo-text span{color:#ffffff73;font-size:11px}.sidebar-toggle-btn{background:linear-gradient(135deg,var(--primary-500),var(--primary-600));color:#fff;cursor:pointer;z-index:101;opacity:1;border:none;border-radius:0 6px 6px 0;justify-content:center;align-items:center;width:22px;height:36px;padding:0;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;position:fixed;top:28px;left:268px;transform:translateY(0);box-shadow:2px 0 12px #6366f140}.sidebar-toggle-btn.collapsed{left:60px}.sidebar-toggle-btn:hover{background:linear-gradient(135deg,var(--primary-400),var(--primary-500));width:26px;box-shadow:3px 0 16px #6366f166}.sidebar-nav{flex:1;padding:12px 8px;overflow:hidden auto}.sidebar-nav::-webkit-scrollbar{width:4px}.sidebar-nav::-webkit-scrollbar-track{background:0 0}.sidebar-nav::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}.sidebar-nav::-webkit-scrollbar-thumb:hover{background:#fff3}.nav-section-title{display:none}.nav-item{color:#fff9;cursor:pointer;text-align:left;white-space:nowrap;background:0 0;border:none;border-radius:10px;align-items:center;gap:12px;width:100%;margin-bottom:2px;padding:10px 14px;font-family:inherit;font-size:13.5px;font-weight:500;text-decoration:none;transition:all .15s;display:flex;position:relative;overflow:hidden}.sidebar.collapsed .nav-item{color:#ffffffb3;justify-content:center;padding:12px;overflow:visible}.nav-item:hover{color:#fffffff2;background:#ffffff14}.nav-item.active{color:#fff;background:#6366f140;box-shadow:inset 3px 0 #818cf8}.sidebar.collapsed .nav-item.active{box-shadow:none;color:#fff;background:#6366f140}.nav-item .nav-icon{flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;display:flex;position:relative}.nav-item .nav-badge{color:#fff;text-align:center;background:#ef4444;border-radius:8px;min-width:16px;height:16px;padding:0 4px;font-size:9px;font-weight:700;line-height:16px;display:none;position:absolute;top:-4px;right:-6px;box-shadow:0 2px 6px #ef444466}.sidebar.collapsed .nav-item .nav-badge{display:block}.nav-badge-label{color:#fff;text-align:center;background:#ef4444;border-radius:10px;min-width:22px;margin-left:auto;padding:2px 8px;font-size:11px;font-weight:700;line-height:1.2;animation:2s ease-in-out infinite badgePulse;box-shadow:0 2px 6px #ef44444d}@keyframes badgePulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.sidebar.collapsed .nav-badge-label{display:none}.nav-group{position:relative}.nav-group .nav-submenu-arrow{flex-shrink:0}.sidebar.collapsed .nav-group .nav-submenu-arrow{display:none}.nav-submenu{border-left:1px solid #ffffff1a;margin-left:20px;padding:2px 0 2px 12px;animation:.2s submenuSlide}@keyframes submenuSlide{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.nav-subitem{padding:8px 14px!important;font-size:12.5px!important}.nav-subitem .nav-icon{width:22px!important;height:22px!important}.nav-subitem .nav-icon svg{width:16px;height:16px}.nav-item .nav-label{opacity:1;transition:opacity .2s .1s,width .2s;overflow:hidden}.sidebar.collapsed .nav-item .nav-label{opacity:0;pointer-events:none;width:0;transition:opacity .1s,width .1s;overflow:hidden}.sidebar.collapsed .nav-item:hover:after{content:attr(title);color:#f1f5f9;white-space:nowrap;z-index:200;pointer-events:none;background:#1e293b;border:1px solid #ffffff1a;border-radius:8px;padding:6px 14px;font-size:13px;font-weight:500;position:fixed;left:78px;box-shadow:0 4px 16px #00000040}.sidebar-user{background:#00000026;border-top:1px solid #ffffff14;align-items:center;gap:10px;padding:14px 16px;display:flex;overflow:hidden}.sidebar.collapsed .sidebar-user{flex-direction:column;align-items:center;gap:6px;padding:12px 8px}.sidebar-user .user-avatar{background:linear-gradient(135deg,var(--primary-500),var(--accent-500));color:#fff;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:13px;font-weight:700;display:flex}.sidebar-user .user-info{opacity:1;flex:1;min-width:0;transition:opacity .2s .1s,width .2s}.sidebar.collapsed .sidebar-user .user-info{opacity:0;pointer-events:none;width:0;height:0;transition:opacity .1s,width .1s;overflow:hidden}.sidebar-user .user-name{color:#fff;white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.sidebar-user .user-role{color:#ffffff80;text-transform:capitalize;font-size:11px}.sidebar-user .logout-btn{color:#fff9;cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:8px;font-size:16px;transition:all .15s;display:flex}.sidebar.collapsed .sidebar-user .logout-btn{padding:6px}.sidebar-user .logout-btn:hover{color:#fca5a5;background:#ef444426}.main-content{flex:1;max-width:100vw;min-height:100vh;margin-left:280px;transition:margin-left .3s cubic-bezier(.4,0,.2,1);overflow-x:hidden}.main-content.sidebar-collapsed{margin-left:72px}.content-header{border-bottom:1px solid var(--border-color);background:var(--bg-primary);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:50;justify-content:space-between;align-items:center;gap:16px;padding:20px 32px;display:flex;position:sticky;top:0}.content-header h1{color:var(--text-primary);letter-spacing:-.3px;font-size:22px;font-weight:700}.content-header .header-actions{align-items:center;gap:12px;display:flex}.content-body{padding:32px;overflow-x:hidden}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-bottom:32px;display:grid}.stat-card{background:var(--bg-card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:all var(--transition-base);padding:24px;position:relative;overflow:hidden}.stat-card:before{content:"";background:var(--card-accent,linear-gradient(90deg,var(--primary-500),var(--accent-500)));opacity:0;height:3px;transition:opacity var(--transition-base);position:absolute;top:0;left:0;right:0}.stat-card:hover{border-color:var(--border-color-hover);transform:translateY(-3px);box-shadow:0 12px 40px #00000026}.stat-card:hover:before{opacity:1}.stat-card .stat-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.stat-card .stat-icon{border-radius:var(--radius-md);background:var(--bg-glass);justify-content:center;align-items:center;width:48px;height:48px;font-size:24px;display:flex}.stat-card .stat-trend{border-radius:20px;padding:4px 10px;font-size:12px;font-weight:600}.stat-card .stat-trend.up{color:var(--success);background:#22c55e1a}.stat-card .stat-value{color:var(--text-primary);font-size:32px;font-weight:800;line-height:1.2}.stat-card .stat-label{color:var(--text-muted);margin-top:4px;font-size:13px}.card{background:var(--bg-card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:all var(--transition-base);overflow:hidden}.card:hover{border-color:var(--border-color-hover)}.card-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.card-header h2{font-size:16px;font-weight:700}.card-header h3{font-size:15px;font-weight:600}.card-body{padding:24px}.card-body.no-padding{padding:0}.data-table{border-collapse:collapse;width:100%}.data-table th{text-align:left;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border-color);background:var(--bg-glass);padding:12px 16px;font-size:12px;font-weight:700}.data-table td{color:var(--text-secondary);border-bottom:1px solid var(--border-color);padding:14px 16px;font-size:14px}.data-table tr:hover td{background:var(--bg-glass);color:var(--text-primary)}.data-table tr:last-child td{border-bottom:none}.badge{white-space:nowrap;border-radius:20px;align-items:center;gap:6px;padding:4px 12px;font-size:12px;font-weight:600;display:inline-flex}.badge-success{color:var(--success);background:#22c55e26}.badge-warning{color:var(--warning);background:#f59e0b26}.badge-danger{color:var(--danger);background:#ef444426}.badge-info{color:var(--info);background:#3b82f626}.badge-primary{color:var(--primary-400);background:#6366f126}.notif-btn{background:var(--bg-glass);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;width:44px;height:44px;transition:all var(--transition-fast);justify-content:center;align-items:center;font-size:20px;display:flex;position:relative}.notif-btn:hover{background:var(--bg-card-hover);color:var(--text-primary)}.notif-btn .notif-count{background:var(--danger);color:#fff;border:2px solid var(--bg-secondary);border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;font-size:10px;font-weight:700;animation:2s ease-in-out infinite pulse;display:flex;position:absolute;top:-4px;right:-4px}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.attendance-grid{flex-direction:column;gap:8px;display:flex}.attendance-virtualized{contain:content;flex-direction:column;gap:8px;max-height:520px;padding-right:4px;display:flex;overflow-y:auto}.attendance-row{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:background-color var(--transition-fast),border-color var(--transition-fast);align-items:center;gap:12px;padding:12px 16px;display:flex}.attendance-row:hover{background:var(--bg-card-hover);border-color:var(--border-color-hover)}.attendance-row .student-name{flex:1;font-size:14px;font-weight:500}.attendance-buttons{gap:6px;display:flex}.attendance-btn{border-radius:var(--radius-sm);border:2px solid var(--border-color);background:var(--bg-glass);width:40px;height:40px;color:var(--text-muted);cursor:pointer;transition:background-color var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast);justify-content:center;align-items:center;font-size:18px;display:flex}.attendance-btn:hover{border-color:var(--border-color-hover);transform:scale(1.05)}.attendance-btn.geldi{border-color:var(--success);color:var(--success);background:#22c55e26}.attendance-btn.gelmedi{border-color:var(--danger);color:var(--danger);background:#ef444426}.attendance-btn.gec{border-color:var(--warning);color:var(--warning);background:#f59e0b26}.attendance-btn.izinli{border-color:var(--info);color:var(--info);background:#3b82f626}.homework-list{flex-direction:column;gap:12px;display:flex}.homework-item{background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all var(--transition-base);align-items:flex-start;gap:16px;padding:20px;display:flex}.homework-item:hover{border-color:var(--border-color-hover);background:var(--bg-card-hover)}.homework-item 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