@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";
:root{--primary-color:#4f46e5;--secondary-color:#6366f1;--highlight-color:#f59e0b;--bg-main:#f8fafc;--surface-color:#fff;--surface-border:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -2px #0000000a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-main);color:var(--text-main);flex-direction:column;min-height:100vh;font-family:Inter,sans-serif;display:flex}.text-center{text-align:center}.mb-4{margin-bottom:1.5rem}.mt-4{margin-top:1.5rem}.mobile-safe-clearance{display:none}.container{width:100%;max-width:1140px;margin:0 auto;padding:0 20px}.navbar{z-index:1000;-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--surface-border);width:100%;box-shadow:var(--shadow-sm);background:#fffffff2;position:fixed;top:0}.nav-container{justify-content:space-between;align-items:center;max-width:1140px;margin:0 auto;padding:12px 20px;display:flex}.nav-brand{color:var(--text-main);align-items:center;gap:12px;font-size:1.25rem;font-weight:700;text-decoration:none;display:flex}.nav-logo{object-fit:contain;height:36px}.nav-login-btn{background-color:var(--primary-color);color:#fff;border-radius:999px;align-items:center;gap:8px;padding:10px 24px;font-size:1rem;font-weight:700;text-decoration:none;transition:all .3s;display:flex;box-shadow:0 4px 6px -1px #4f46e533,0 2px 4px -1px #4f46e51a}.nav-login-btn:hover{background-color:#4338ca;transform:translateY(-1px);box-shadow:0 6px 10px -1px #4f46e54d,0 2px 4px -1px #4f46e533}.hero-section{background-color:#0000;background-image:radial-gradient(#e2e8f0 1px,#0000 1px);background-size:30px 30px;align-items:center;min-height:90vh;padding-top:80px;display:flex}.hero-container{align-items:center;gap:40px;display:flex}.hero-text{flex:1}.hero-title{color:var(--text-main);letter-spacing:-.02em;margin-bottom:1.5rem;font-size:3.5rem;font-weight:800;line-height:1.15}.text-highlight{color:var(--primary-color);white-space:nowrap}.hero-subtitle{color:var(--text-muted);max-width:500px;margin-bottom:2.5rem;font-size:1.15rem;line-height:1.7}.btn-cta{background:var(--primary-color);color:#fff;border:none;border-radius:12px;padding:16px 40px;font-size:1.1rem;font-weight:600;text-decoration:none;transition:all .3s;display:inline-block;box-shadow:0 4px 14px #4f46e563}.btn-cta:hover{background:var(--secondary-color);color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px #4f46e53b}.hero-image-wrapper{text-align:right;flex:1;position:relative}.hero-image{object-fit:contain;max-width:100%;max-height:400px;box-shadow:var(--shadow-lg);border-radius:16px}.section-padding{padding:100px 0}.section-alt{background-color:var(--surface-color);border-top:1px solid var(--surface-border);border-bottom:1px solid var(--surface-border)}.section-header{text-align:center;margin-bottom:60px}.section-header h2{color:var(--text-main);letter-spacing:-.01em;margin-bottom:12px;font-size:2.5rem;font-weight:800}.section-header p{color:var(--text-muted);font-size:1.15rem}.grid-3{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;display:grid}.grid-2{grid-template-columns:1fr 1fr;gap:20px;display:grid}.glass-card{background:var(--surface-color);border:1px solid var(--surface-border);box-shadow:var(--shadow-sm);border-radius:16px;padding:40px 30px;transition:all .3s}.glass-card:hover{box-shadow:var(--shadow-md);border-color:#cbd5e1;transform:translateY(-5px)}.icon-wrapper{margin-bottom:24px;font-size:2.5rem}.glass-card h3{color:var(--text-main);margin-bottom:12px;font-size:1.25rem;font-weight:700}.glass-card p{color:var(--text-muted);font-size:.95rem;line-height:1.6}.about-container{align-items:center;gap:60px;display:flex}.about-text{flex:1}.about-text h2{margin-bottom:24px;font-size:2.5rem;font-weight:800}.about-text p{color:var(--text-muted);font-size:1.1rem;line-height:1.7}.list-item{color:var(--text-main);align-items:center;gap:12px;font-size:1.05rem;font-weight:500;display:flex}.about-icon{text-align:center;background:#f1f5f9;border-radius:50%;flex:1;justify-content:center;align-items:center;width:250px;height:250px;margin:0 auto;font-size:8rem;display:flex}@media (max-width:992px){.hero-container,.about-container{text-align:center;flex-direction:column}.hero-title{font-size:2.75rem}.hero-subtitle{margin:0 auto 2.5rem}.hero-image-wrapper{margin-top:20px}}.login-container{background-color:#f8fafc;background-image:radial-gradient(#cbd5e1 1px,#0000 1px);background-size:40px 40px;flex:1;justify-content:center;align-items:center;padding:20px;display:flex;position:relative}.login-back-btn{color:var(--text-muted);font-size:.95rem;font-weight:500;text-decoration:none;transition:color .2s;position:absolute;top:40px;left:40px}.login-back-btn:hover{color:var(--text-main)}.login-card{background:#fff;border:1px solid #e2e8f0cc;border-radius:24px;width:100%;max-width:440px;padding:50px 40px;box-shadow:0 20px 25px -5px #0000000d,0 8px 10px -6px #00000003}.login-header{text-align:center;margin-bottom:40px}.login-logo{object-fit:contain;height:48px;margin-bottom:24px}.login-header h1{color:var(--text-main);letter-spacing:-.02em;margin-bottom:10px;font-size:1.85rem;font-weight:800}.login-header p{color:var(--text-muted);font-size:.95rem;line-height:1.5}.input-group{margin-bottom:1.5rem}.input-label{color:var(--text-main);margin-bottom:.5rem;font-size:.875rem;font-weight:600;display:block}.input-field{width:100%;color:var(--text-main);background-color:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:14px 16px;font-size:1rem;transition:all .2s;box-shadow:inset 0 1px 2px #00000005}.input-wrapper{align-items:center;display:flex;position:relative}input[type=file]::file-selector-button{color:#334155;cursor:pointer;background-color:#f1f5f9;border:1px solid #cbd5e1;border-radius:8px;margin-right:15px;padding:8px 16px;font-family:inherit;font-size:.9rem;font-weight:600;transition:all .2s}input[type=file]{padding-top:10px;padding-bottom:10px}input[type=file]::file-selector-button:hover{color:#0f172a;background-color:#e2e8f0}.input-icon{color:#94a3b8;pointer-events:none;transition:color .2s;position:absolute;left:14px}.input-field.with-icon{padding-left:44px}.input-field:focus+.input-icon,.input-wrapper:focus-within .input-icon{color:var(--primary-color)}.input-field:focus{border-color:var(--primary-color);background-color:#fff;outline:none;box-shadow:inset 0 1px 2px #00000005,0 0 0 4px #4f46e51a}.input-field::placeholder{color:#94a3b8}.login-btn{color:#fff;background:linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);border:1px solid var(--secondary-color);text-shadow:0 1px 2px #0000001a;cursor:pointer;border-radius:12px;width:100%;margin-top:10px;padding:16px 24px;font-weight:600;transition:all .2s;box-shadow:inset 0 1px 1px #fff3,0 4px 6px -1px #4f46e533}.login-btn:hover{background:linear-gradient(#5c54f0 0%,#4f46e5 100%)}.login-footer{text-align:center;color:#64748b;border-top:1px solid #f1f5f9;margin-top:32px;padding-top:24px;font-size:.9rem;font-weight:500}.table-row{border-bottom:1px solid #e2e8f0;transition:background-color .2s}.table-row:hover{background-color:#f8fafc}.table-row:last-child{border-bottom:none}.btn-icon{cursor:pointer;background-color:#0000;border:1px solid #0000;border-radius:6px;justify-content:center;align-items:center;width:32px;height:32px;transition:all .2s;display:inline-flex}.btn-icon:hover{background-color:#f1f5f9}.btn-icon.edit{color:#3b82f6}.btn-icon.edit:hover{color:#2563eb;background-color:#eff6ff}.btn-icon.manage{color:#8b5cf6}.btn-icon.manage:hover{color:#7c3aed;background-color:#f3e8ff}.btn-icon.delete{color:#ef4444}.btn-icon.delete:hover{color:#dc2626;background-color:#fef2f2}.btn-icon.toggle-on{color:#10b981}.btn-icon.toggle-on:hover{color:#059669;background-color:#ecfdf5}.btn-icon.results{color:#10b981}.btn-icon.results:hover{color:#059669;background-color:#ecfdf5}.btn-icon.toggle-off{color:#94a3b8}.btn-icon.toggle-off:hover{color:#d97706;background-color:#fefce8}.btn-logout{color:#ef4444;cursor:pointer;background-color:#fff;border:1px solid #fee2e2;border-radius:12px;align-items:center;gap:8px;padding:12px 24px;font-weight:600;transition:all .2s;display:flex;box-shadow:0 2px 4px #ef44440d}.btn-logout:hover{background-color:#fef2f2;border-color:#fca5a5}.test-card{background-color:#fff;border:1px solid #e2e8f0;border-radius:16px;flex-direction:column;gap:20px;padding:28px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;box-shadow:0 4px 6px -1px #0000000d,0 2px 4px -1px #00000008}.test-card:hover{border-color:#cbd5e1;transform:translateY(-4px);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a}.btn-gradient-primary{color:#fff;background:linear-gradient(135deg,#4f46e5 0%,#4338ca 100%);border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:14px;font-weight:600;text-decoration:none;transition:all .2s;display:flex;box-shadow:0 4px 12px #4f46e54d}.btn-gradient-primary:hover{filter:brightness(1.1);transform:scale(1.02)}.btn-gradient-secondary{color:#fff;background:linear-gradient(135deg,#f59e0b 0%,#d97706 100%);border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:14px;font-weight:600;text-decoration:none;transition:all .2s;display:flex;box-shadow:0 4px 12px #f59e0b4d}.btn-gradient-secondary:hover{filter:brightness(1.1);transform:scale(1.02)}.admin-layout{background-color:#f8fafc;height:100vh;font-family:Inter,sans-serif;display:flex;overflow:hidden}.admin-sidebar{color:#f8fafc;z-index:50;background-color:#0b1120;border-right:1px solid #1e293b;flex-direction:column;width:280px;transition:all .3s;display:flex}.admin-sidebar-header{border-bottom:1px solid #0000;padding:25px 30px}.admin-sidebar-header h2{align-items:center;gap:10px;margin:0;font-size:1.2rem;font-weight:800;display:flex}.admin-sidebar-icon{color:#38bdf8;align-items:center;display:flex}.admin-sidebar-icon svg{width:24px;height:24px}.admin-sidebar-header h2 span:last-child{letter-spacing:-.02em;color:#fff}.admin-sidebar-nav{flex-direction:column;flex:1;gap:4px;padding:20px 10px;display:flex}.admin-sidebar-link{color:#94a3b8;background-color:#0000;border-radius:8px;align-items:center;gap:12px;padding:12px 16px;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.admin-sidebar-link.active{color:#fff;background-color:#4f46e5;font-weight:600;box-shadow:0 4px 12px #4f46e54d}.admin-sidebar-link.disabled{opacity:.4;pointer-events:none}.admin-sidebar-link-icon{color:#64748b;align-items:center;display:flex}.admin-sidebar-link-icon svg{width:20px;height:20px}.admin-sidebar-link.active .admin-sidebar-link-icon{color:#fff}.admin-sidebar-footer{border-top:1px solid #1e293b;padding:20px}.admin-logout-btn{color:#94a3b8;cursor:pointer;background-color:#0000;border:none;border-radius:8px;justify-content:flex-start;align-items:center;gap:12px;width:100%;padding:12px 12px 12px 16px;font-weight:600;transition:all .2s;display:flex}.admin-logout-btn svg{color:#64748b;width:20px;height:20px}.admin-main{flex-direction:column;flex:1;display:flex;overflow:hidden}.admin-header{background-color:#fff;border-bottom:1px solid #e2e8f0;flex-shrink:0;align-items:center;height:70px;padding:0 40px;display:flex}.admin-header-brand-mobile{display:none}.admin-header-user{align-items:center;gap:15px;margin-left:auto;display:flex}.admin-header-text{text-align:right}.admin-header-name{color:#0f172a;margin:0;font-size:.95rem;font-weight:600}.admin-header-role{color:#64748b;margin:0;font-size:.8rem}.admin-header-avatar{color:#4f46e5;background-color:#e0e7ff;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-weight:800;display:flex}.admin-content{flex:1;padding:40px;overflow-y:auto}.admin-page-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin-bottom:30px;display:flex}.admin-page-title{flex:1;min-width:250px}.admin-toolbar{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:15px;display:flex}.admin-toolbar-filters{flex-wrap:wrap;align-items:center;gap:15px;display:flex}.admin-btn-primary{color:#fff;white-space:nowrap;background-color:#2563eb;border-radius:8px;justify-content:center;align-items:center;padding:10px 24px;font-weight:600;text-decoration:none;display:inline-flex;box-shadow:0 2px 4px #2563eb33}.dashboard-main-grid{grid-template-columns:1fr 380px;gap:24px;display:grid}.dashboard-analytics-grid{grid-template-columns:1fr 1fr;gap:24px;display:grid}.admin-pagination-footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:15px;margin-top:20px;display:flex}.student-layout{background-color:#f8fafc;min-height:100vh;padding:40px}.student-header{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background-color:#fffc;border:1px solid #ffffff80;border-radius:24px;justify-content:space-between;align-items:center;margin-bottom:40px;padding:24px 32px;display:flex;box-shadow:0 4px 20px -2px #00000008}.student-dashboard-card{text-align:center;background-color:#fff;border:1px solid #f1f5f9;border-radius:24px;padding:50px;box-shadow:0 10px 30px -5px #00000008}.student-test-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;display:grid}.test-badge{letter-spacing:.05em;text-transform:uppercase;border-radius:999px;padding:6px 12px;font-size:.75rem;font-weight:700;display:inline-block}.badge-active{color:#059669;background-color:#ecfdf5}.badge-completed{color:#64748b;background-color:#f1f5f9}.exam-layout{background-color:#f8fafc;height:100vh;display:flex;overflow:hidden}.exam-sidebar{z-index:10;background-color:#fff;border-right:1px solid #e2e8f0;flex-direction:column;width:320px;display:flex;box-shadow:1px 0 10px #00000005}.exam-sidebar-header{background-color:#f8fafc;border-bottom:1px solid #e2e8f0;padding:24px}.timer-box{color:#fff;background-color:#0f172a;border-radius:12px;justify-content:center;align-items:center;gap:12px;padding:16px;display:flex;box-shadow:inset 0 2px 4px #0003}.timer-text{font-variant-numeric:tabular-nums;letter-spacing:1px;font-size:1.5rem;font-weight:800}.timer-warning{background-color:#ef4444;animation:1s infinite pulse-timer}@keyframes pulse-timer{0%{box-shadow:0 0 #ef444466}70%{box-shadow:0 0 0 10px #ef444400}to{box-shadow:0 0 #ef444400}}.question-nav-grid{grid-template-columns:repeat(5,1fr);align-content:flex-start;gap:12px;padding:24px;display:grid;overflow-y:auto}.nav-btn{aspect-ratio:1;color:#475569;cursor:pointer;background-color:#fff;border:1px solid #cbd5e1;border-radius:8px;justify-content:center;align-items:center;font-size:1rem;font-weight:600;transition:all .2s;display:flex}.nav-btn:hover{background-color:#f1f5f9;border-color:#94a3b8}.nav-btn.answered{color:#fff;background-color:#10b981;border-color:#059669}.nav-btn.active{border-width:2px;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f633}.exam-main{flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.exam-content-area{flex:1;padding:40px;overflow-y:auto}.question-card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;max-width:800px;margin:0 auto;padding:40px;box-shadow:0 4px 6px -1px #0000000d}.question-header{border-bottom:1px solid #f1f5f9;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:20px;display:flex}.question-number{color:#0f172a;font-size:1.25rem;font-weight:800}.question-points{color:#3b82f6;background-color:#eff6ff;border-radius:999px;padding:6px 12px;font-size:.85rem;font-weight:700}.question-text{color:#1e293b;margin-bottom:30px;font-size:1.15rem;line-height:1.7}.options-container{flex-direction:column;gap:16px;display:flex}.option-label{cursor:pointer;background-color:#fff;border:1px solid #e2e8f0;border-radius:12px;align-items:flex-start;gap:16px;padding:20px;transition:all .2s;display:flex}.option-label:hover{background-color:#f8fafc;border-color:#cbd5e1}.option-input{accent-color:#4f46e5;width:20px;height:20px;margin-top:4px}.option-label.selected{background-color:#eef2ff;border-color:#4f46e5;box-shadow:0 2px 4px #4f46e50d}.option-text{color:#334155;font-size:1.05rem;line-height:1.5}.exam-footer{background-color:#fff;border-top:1px solid #e2e8f0;justify-content:space-between;align-items:center;padding:20px 40px;display:flex}.btn-nav{cursor:pointer;border-radius:8px;align-items:center;gap:8px;padding:12px 24px;font-size:1rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-prev{color:#475569;background-color:#fff;border:1px solid #cbd5e1}.btn-prev:hover:not(:disabled){color:#0f172a;background-color:#f1f5f9}.btn-prev:disabled{opacity:.5;cursor:not-allowed}.btn-next{color:#fff;background-color:#4f46e5;border:none;box-shadow:0 4px 6px -1px #4f46e533}.btn-next:hover{background-color:#4338ca;transform:translateY(-1px)}.btn-finish{color:#fff;background-color:#10b981;border:none;box-shadow:0 4px 6px -1px #10b98133}.btn-finish:hover{background-color:#059669}.fullscreen-btn{color:#fff;cursor:pointer;background:#fff3;border:1px solid #ffffff4d;border-radius:6px;align-items:center;gap:6px;padding:8px 12px;font-size:.8rem;font-weight:600;transition:background .2s;display:flex}.fullscreen-btn:hover{background:#ffffff4d}@media (max-width:1024px){.exam-sidebar{width:280px}}@media (max-width:768px){.admin-layout{flex-direction:column}.login-container{padding:20px 16px;padding-top:calc(80px + env(safe-area-inset-top));padding-bottom:calc(20px + env(safe-area-inset-bottom));align-items:flex-start}.login-back-btn{top:calc(20px + env(safe-area-inset-top));font-size:.9rem;left:20px}.login-card{border-radius:20px;padding:40px 24px}.admin-sidebar{z-index:100;-webkit-backdrop-filter:blur(16px);background-color:#0b1120bf;border:1px solid #ffffff26;border-radius:24px;flex-direction:row;justify-content:space-between;align-items:center;width:calc(100% - 40px);height:auto;padding:8px 15px;position:fixed;bottom:20px;left:20px;right:20px;box-shadow:0 20px 25px -5px #00000080,0 10px 10px -5px #0003}.admin-sidebar-header{display:none}.admin-sidebar-nav{flex-direction:row;justify-content:space-around;width:100%;margin-right:10px;padding:5px}.admin-sidebar-link{flex-direction:column;gap:4px;padding:8px}.admin-sidebar-label{display:none}.admin-sidebar-footer{border-top:none;padding:0}.admin-logout-btn{padding:8px}.admin-logout-btn text,.admin-logout-btn span,.admin-logout-btn{justify-content:center;gap:0;font-size:0}.admin-logout-btn svg{margin:0}.admin-header{height:60px;padding:0 20px}.admin-header-brand-mobile{color:#0f172a;letter-spacing:-.02em;align-items:center;gap:8px;font-size:1.1rem;font-weight:800;display:flex}.admin-content{padding:20px}.admin-content:after{content:"";width:100%;height:180px;display:block}.admin-page-header{flex-direction:column;align-items:stretch;margin-bottom:20px}.admin-toolbar{flex-direction:column;align-items:stretch;width:100%}.admin-toolbar-filters{flex-direction:row;width:100%}.admin-toolbar-filters>:first-child{flex-shrink:0}.admin-btn-primary{width:100%;padding:14px;font-size:1rem}.dashboard-main-grid,.dashboard-analytics-grid{grid-template-columns:1fr}.admin-pagination-footer{text-align:center;flex-direction:column;justify-content:center;gap:15px}.student-layout{padding:16px}.student-header{flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:20px;padding:20px}.student-header form,.student-header .btn-logout{width:100%}.student-header .btn-logout{justify-content:center}.student-dashboard-card{padding:24px 16px}.mobile-safe-clearance{flex-shrink:0;width:100%!important;height:120px!important;display:block!important}.student-test-grid{grid-template-columns:1fr}.exam-layout{flex-direction:column}.exam-sidebar{border-top:1px solid #e2e8f0;border-right:none;order:2;width:100%;max-height:40vh}.exam-main{order:1}.exam-content-area{padding:20px}.question-card{padding:24px}.exam-footer{padding:16px 20px}.btn-nav span{display:none}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f1f5f9}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:.4s ease-out forwards fadeIn}@media print{.admin-sidebar,.admin-header,.admin-toolbar,.admin-pagination-footer{display:none!important}.admin-layout,.admin-main,.admin-content{background-color:#fff!important;height:auto!important;display:block!important;overflow:visible!important}.glass-card{box-shadow:none;break-inside:avoid;border:1px solid #000}}