@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap");:root{--primary:#3B82F6;--primary-light:#60A5FA;--primary-dark:#2563EB;--secondary:#06B6D4;--secondary-light:#67E8F9;--accent:#F472B6;--accent-light:#FBBF24;--bg-primary:#0A0F1E;--bg-secondary:#111827;--bg-card:#152035;--bg-card-hover:#1C2A45;--bg-glass:rgba(21,32,53,0.7);--bg-input:#111827;--text-primary:#FFFFFF;--text-secondary:#94A3B8;--text-muted:#64748B;--text-accent:#60A5FA;--border-color:rgba(59,130,246,0.2);--border-light:rgba(255,255,255,0.07);--shadow-sm:0 2px 8px rgba(0,0,0,0.2);--shadow-md:0 4px 16px rgba(0,0,0,0.3);--shadow-lg:0 8px 32px rgba(0,0,0,0.4);--shadow-glow:0 0 20px rgba(59,130,246,0.3);--shadow-glow-accent:0 0 20px 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p{font-size:.95rem;color:var(--text-secondary);margin-bottom:var(--space-xl);max-width:420px;margin-left:auto;margin-right:auto;line-height:1.6}.landing-cta-buttons{display:flex;gap:var(--space-md);justify-content:center;flex-wrap:wrap}.landing-footer-v2{position:relative;z-index:1;border-top:1px solid var(--border-light);background:rgba(21,32,53,.15)}[data-theme=light] .landing-footer-v2{background:rgba(237,237,245,.3)}.footer-inner{max-width:1140px;margin:0 auto;padding:var(--space-3xl) var(--space-lg) var(--space-xl);display:grid;grid-template-columns:2fr 1fr 1fr;gap:var(--space-3xl)}.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1rem;color:var(--text-primary);margin-bottom:var(--space-md)}.footer-logo-img{width:32px;height:32px;border-radius:8px;object-fit:cover}.footer-brand-desc{font-size:.85rem;color:var(--text-muted);line-height:1.6;margin-bottom:var(--space-lg);max-width:280px}.footer-social{display:flex;gap:var(--space-sm)}.footer-social 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100%}}.particles{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;overflow:hidden}.particle{position:absolute;width:4px;height:4px;border-radius:50%;background:var(--primary-light);opacity:.1;animation:particleFloat linear infinite}@keyframes particleFloat{0%{transform:translateY(100vh) scale(0);opacity:0}10%{opacity:.1}90%{opacity:.1}to{transform:translateY(-10vh) scale(1);opacity:0}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:12px 24px;border-radius:var(--radius-md);font-size:.9rem;font-weight:600;transition:all var(--transition-normal);position:relative;overflow:hidden;cursor:pointer}.btn-primary{background:var(--gradient-primary);color:white;box-shadow:0 4px 15px rgba(59,130,246,.25)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(59,130,246,.35)}.btn-outline{background:transparent;color:var(--text-primary);border:1.5px solid 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h1{font-size:1.6rem;font-weight:800;margin-bottom:var(--space-xs)}.top-right-actions{position:fixed;top:var(--space-lg);right:var(--space-xl);z-index:1000;display:flex;align-items:center;gap:var(--space-sm)}@media (max-width:768px){.top-right-actions{top:var(--space-md);right:var(--space-md)}.page-header{padding-right:90px}}.action-btn{width:44px;height:44px;border-radius:50%;background:var(--bg-card);border:1px solid var(--border-light);display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-sm)}.action-btn:hover{background:var(--bg-card-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.page-header p{color:var(--text-secondary);font-size:.9rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-md);margin-bottom:var(--space-xl)}.stat-card{background:var(--gradient-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:var(--space-lg);position:relative;overflow:hidden;transition:all var(--transition-normal)}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.stat-card .stat-icon{width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:var(--space-md)}.stat-card .stat-icon.purple{background:rgba(59,130,246,.12);color:var(--primary-light)}.stat-card .stat-icon.teal{background:rgba(0,206,201,.12);color:var(--secondary)}.stat-card .stat-icon.pink{background:rgba(253,121,168,.12);color:var(--accent)}.stat-card .stat-icon.yellow{background:rgba(253,203,110,.12);color:var(--accent-light)}.stat-card .stat-value{font-size:1.8rem;font-weight:800;margin-bottom:2px}.stat-card .stat-label{font-size:.8rem;color:var(--text-muted);font-weight:500}.card{background:var(--gradient-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:var(--space-lg);transition:all var(--transition-normal)}.card:hover{box-shadow:var(--shadow-md)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-md)}.card-header h2{font-size:1.1rem;font-weight:700}.card-header h3{font-size:1rem;font-weight:600}.tabs-container{margin-bottom:var(--space-lg)}.tabs{display:flex;gap:var(--space-xs);overflow-x:auto;padding-bottom:var(--space-sm);-webkit-overflow-scrolling:touch;scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tab{padding:10px 20px;border-radius:var(--radius-md);font-size:.85rem;font-weight:600;color:var(--text-secondary);background:transparent;border:1.5px solid transparent;transition:all 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var(--transition-fast);cursor:pointer;flex-shrink:0}.week-nav-btn:hover:not(:disabled){background:rgba(59,130,246,.15);color:var(--primary-light)}.week-nav-btn:disabled{opacity:.3;cursor:not-allowed}.week-label{font-size:.9rem;font-weight:600;color:var(--text-primary)}.task-list{display:flex;flex-direction:column;gap:var(--space-sm)}.task-item{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);transition:all var(--transition-fast)}.task-item:hover{border-color:var(--border-color)}.task-checkbox{width:22px;height:22px;border-radius:6px;border:2px solid var(--border-color);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);flex-shrink:0;background:transparent;color:transparent;font-size:.7rem}.task-checkbox.checked,.task-checkbox:hover{border-color:var(--primary)}.task-checkbox.checked{background:var(--gradient-primary);color:white}.task-checkbox.disabled{opacity:.5;cursor:not-allowed}.task-info{flex:1 1}.task-title{font-size:.9rem;font-weight:600}.task-title.completed{text-decoration:line-through;color:var(--text-muted)}.task-desc{font-size:.8rem;color:var(--text-muted);margin-top:2px}.task-actions{display:flex;gap:var(--space-xs)}.task-action-btn{width:32px;height:32px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;background:transparent;color:var(--text-muted);border:none;cursor:pointer;transition:all var(--transition-fast);font-size:.85rem}.task-action-btn:hover{background:rgba(59,130,246,.1);color:var(--primary-light)}.task-action-btn.delete:hover{background:rgba(231,76,60,.1);color:#e74c3c}.table-container{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--border-light);width:100%;-webkit-overflow-scrolling:touch}.data-table{width:100%;border-collapse:collapse}.data-table th{text-align:left;font-size:.8rem;font-weight:600;color:var(--text-muted);background:var(--bg-secondary);text-transform:uppercase;letter-spacing:.05em}.data-table td,.data-table th{padding:14px 16px;border-bottom:1px solid var(--border-light)}.data-table td{font-size:.9rem;color:var(--text-primary)}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover td{background:rgba(59,130,246,.03)}.exam-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-lg);max-width:700px;margin:0 auto}.exam-choice-card{background:var(--gradient-card);border:1px solid var(--border-light);border-radius:var(--radius-xl);padding:var(--space-3xl) var(--space-xl);text-align:center;cursor:pointer;transition:all var(--transition-normal);position:relative;overflow:hidden}.exam-choice-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-primary);opacity:0;transition:opacity var(--transition-normal)}.exam-choice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow);border-color:rgba(59,130,246,.3)}.exam-choice-card:hover:before{opacity:1}.exam-choice-card:nth-child(2):before{background:var(--gradient-secondary)}.exam-choice-card:nth-child(2):hover{box-shadow:0 0 20px rgba(0,206,201,.3)}.exam-choice-icon{width:72px;height:72px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto var(--space-lg);background:rgba(59,130,246,.12);color:var(--primary-light)}.exam-choice-card:nth-child(2) .exam-choice-icon{background:rgba(0,206,201,.12);color:var(--secondary)}.exam-choice-card h2{font-size:1.15rem;font-weight:700}.focus-container{flex-direction:column;min-height:60vh}.focus-container,.timer-display{display:flex;align-items:center;justify-content:center}.timer-display{width:280px;height:280px;border-radius:50%;background:var(--gradient-card);border:3px solid var(--border-color);font-size:3.5rem;font-weight:800;letter-spacing:2px;margin-bottom:var(--space-xl);position:relative;box-shadow:var(--shadow-lg)}.timer-display:before{content:"";position:absolute;inset:-6px;border-radius:50%;background:conic-gradient(var(--primary) var(--progress,0),transparent var(--progress,0));z-index:-1;opacity:.3}.timer-presets{display:flex;gap:var(--space-sm);margin-bottom:var(--space-xl)}.timer-preset{padding:8px 20px;border-radius:var(--radius-xl);background:rgba(59,130,246,.08);border:1.5px solid var(--border-color);color:var(--text-secondary);font-size:.85rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.timer-preset.active,.timer-preset:hover{background:rgba(59,130,246,.15);border-color:var(--primary);color:var(--primary-light)}.timer-controls{display:flex;gap:var(--space-md)}.timer-btn{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.3rem;border:none;cursor:pointer;transition:all var(--transition-normal)}.timer-btn.start{background:var(--gradient-primary);color:white;box-shadow:var(--shadow-glow)}.timer-btn.start:hover{transform:scale(1.1)}.timer-btn.stop{background:rgba(231,76,60,.12);color:#e74c3c;border:1px solid rgba(231,76,60,.3)}.timer-btn.stop:hover{background:rgba(231,76,60,.2)}.timer-btn.reset{background:rgba(59,130,246,.08);color:var(--text-secondary);border:1px solid var(--border-color)}.timer-btn.reset:hover{background:rgba(59,130,246,.15)}.focus-total{margin-top:var(--space-2xl);text-align:center;font-size:.9rem;color:var(--text-muted)}.focus-total span{color:var(--primary-light);font-weight:700;font-size:1.1rem}.pdf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:var(--space-md)}.pdf-card{background:var(--gradient-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition-normal)}.pdf-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}.pdf-image{width:100%;height:160px;background:var(--bg-secondary);display:flex;align-items:center;justify-content:center;font-size:3rem;color:var(--text-muted)}.pdf-image 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var(--transition-fast);display:flex;align-items:center;justify-content:center;gap:var(--space-sm)}.pdf-download:hover{background:rgba(59,130,246,.15)}.profile-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:200;opacity:0;visibility:hidden;transition:all var(--transition-normal)}.profile-overlay.active{opacity:1;visibility:visible}.profile-popup{width:100%;max-width:420px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-xl);padding:var(--space-2xl);transform:scale(.9);transition:transform var(--transition-normal)}.profile-overlay.active .profile-popup{transform:scale(1)}.profile-avatar{width:72px;height:72px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-size:1.8rem;font-weight:800;color:white;margin:0 auto var(--space-md)}.profile-info{display:flex;flex-direction:column;gap:var(--space-md)}.profile-item{display:flex;justify-content:space-between;align-items:center;padding:var(--space-sm) 0;border-bottom:1px solid var(--border-light)}.profile-item:last-child{border-bottom:none}.profile-label{font-size:.85rem;color:var(--text-muted)}.profile-value{font-size:.9rem;font-weight:600;color:var(--text-primary)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:200}.modal{width:90%;max-width:500px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-xl);padding:var(--space-xl)}.modal h2{font-size:1.2rem;font-weight:700;margin-bottom:var(--space-lg)}.modal-actions{display:flex;gap:var(--space-md);justify-content:flex-end;margin-top:var(--space-lg)}.student-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--space-md)}.student-card{background:var(--gradient-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:var(--space-lg);cursor:pointer;transition:all var(--transition-normal)}.student-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:rgba(59,130,246,.3)}.student-card-header{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-md)}.student-avatar{width:44px;height:44px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-weight:700;color:white;font-size:.9rem}.student-name{font-size:1rem;font-weight:700}.student-meta{display:flex;flex-direction:column;gap:var(--space-xs)}.student-meta-item{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-muted)}.student-meta-item span:last-child{font-weight:600;color:var(--text-secondary)}.approval-actions{display:flex;gap:var(--space-sm);margin-top:var(--space-md)}.badge{display:inline-flex;padding:4px 10px;border-radius:var(--radius-xl);font-size:.7rem;font-weight:600}.badge-pending{background:rgba(253,203,110,.12);color:#fdcb6e;border:1px solid rgba(253,203,110,.3)}.badge-approved{background:rgba(0,184,148,.12);color:#00b894;border:1px solid rgba(0,184,148,.3)}.badge-rejected{background:rgba(231,76,60,.12);color:#e74c3c;border:1px solid rgba(231,76,60,.3)}.payment-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--space-md)}.payment-card{background:var(--gradient-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:var(--space-lg);cursor:pointer;transition:all var(--transition-normal)}.payment-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.chart-container{position:relative;height:300px;margin-bottom:var(--space-lg)}.back-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:rgba(59,130,246,.08);border:1px solid var(--border-color);color:var(--text-secondary);font-size:1.1rem;cursor:pointer;transition:all var(--transition-fast);margin-bottom:var(--space-md)}.back-btn:hover{background:rgba(59,130,246,.15);color:var(--primary-light)}.empty-state{text-align:center;padding:var(--space-3xl) var(--space-lg);color:var(--text-muted)}.empty-state-icon{font-size:3rem;margin-bottom:var(--space-md);opacity:.5}.empty-state h3{font-size:1.1rem;font-weight:600;margin-bottom:var(--space-sm);color:var(--text-secondary)}.empty-state p{font-size:.85rem;word-break:break-word}.loading{display:flex;align-items:center;justify-content:center;padding:var(--space-3xl)}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.upload-area{border:2px dashed var(--border-color);border-radius:var(--radius-lg);padding:var(--space-2xl);text-align:center;cursor:pointer;transition:all var(--transition-fast)}.upload-area:hover{border-color:var(--primary);background:rgba(59,130,246,.03)}.upload-area-icon{font-size:2rem;color:var(--text-muted);margin-bottom:var(--space-sm)}.upload-area p{font-size:.85rem;color:var(--text-muted)}.responsive-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.responsive-grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;text-align:center}@media (max-width:768px){.responsive-grid-2{grid-template-columns:1fr}.responsive-grid-3{grid-template-columns:1fr 1fr 1fr}}@media (max-width:480px){.responsive-grid-3{grid-template-columns:1fr}}@media (max-width:768px){.sidebar{position:fixed;top:auto;bottom:0;left:0;right:0;height:64px;flex-direction:row;border-right:none;border-top:1px solid var(--border-light);padding:0;z-index:100}.sidebar,.sidebar:hover{width:100%!important}.sidebar-logo{display:none}.sidebar-nav{flex-direction:row;flex:1 1;padding:0;gap:0;justify-content:space-around;overflow-x:auto}.sidebar-link{flex-direction:column;gap:2px;padding:8px 4px;font-size:.65rem;min-width:0;flex:1 1;justify-content:center;border-radius:0}.sidebar-link .icon{width:28px;min-width:28px;height:28px;font-size:1rem;background:none}.sidebar-link.active .icon{background:none;color:var(--primary-light)}.sidebar-link .label{opacity:1;font-size:.6rem;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60px}.sidebar:hover .sidebar-link .label{opacity:1}.sidebar-bottom{display:none}.main-content{margin-left:0!important;padding:var(--space-md);padding-bottom:80px}.page-header h1{font-size:1.3rem}.exam-cards,.features-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.payment-grid,.student-grid{grid-template-columns:1fr}.pdf-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.tabs{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tab{padding:8px 14px;font-size:.8rem}.week-nav{flex-wrap:wrap;justify-content:space-between;gap:var(--space-sm)}.week-label{font-size:.85rem;text-align:center;flex:1 1}.card{padding:var(--space-md)}.form-input{font-size:.9rem}.data-table td,.data-table th{padding:10px 12px;font-size:.8rem;white-space:nowrap}.timer-presets{flex-wrap:wrap;justify-content:center}.timer-display{width:240px;height:240px;font-size:3rem}.focus-container{min-height:50vh}.profile-popup{max-width:90%}.auth-card,.profile-popup{padding:var(--space-lg)}.hero h1{font-size:1.8rem}.hero-desc{font-size:.95rem}.modal{width:95%;padding:var(--space-lg)}.task-item{padding:var(--space-sm) var(--space-md);gap:var(--space-sm)}.task-info{min-width:0;word-break:break-word}.task-title{font-size:.85rem;white-space:normal}.task-desc{font-size:.75rem}.fade-in{max-width:100%;overflow-x:hidden}.chart-container{height:220px;max-width:100%;overflow:hidden}.table-container{width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.data-table{min-width:400px}.card div[style*="display: flex"],.card form,.page-header div[style*="display: flex"]{flex-wrap:wrap}.card div[style*=grid-template-columns]{display:flex!important;flex-direction:column}.student-meta-item{font-size:.75rem}.student-meta-item span:last-child{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.exam-choice-card{padding:var(--space-xl) var(--space-lg)}.exam-choice-icon{width:56px;height:56px;font-size:1.5rem}.instagram-section{padding:var(--space-2xl) var(--space-md)}.instagram-card{padding:var(--space-xl) var(--space-lg)}.back-btn{width:36px;height:36px;font-size:1rem}.stats-grid{grid-template-columns:1fr 1fr 1fr;gap:var(--space-sm)}.stat-card{padding:var(--space-md)}.stat-card .stat-value{font-size:1.3rem}}@media (max-width:480px){.particles{display:none}.stats-grid{grid-template-columns:1fr}.hero-buttons{flex-direction:column;align-items:center}.hero-buttons .btn{width:100%;max-width:280px}.timer-display{width:200px;height:200px;font-size:2.2rem}.timer-preset{padding:6px 14px;font-size:.8rem}.page-header h1{font-size:1.1rem}.page-header p{font-size:.8rem}.stat-card .stat-value{font-size:1.4rem}.stat-card .stat-label{font-size:.7rem}.pdf-grid{grid-template-columns:1fr 1fr;gap:var(--space-sm)}.sidebar-link .label{display:none}.sidebar-link .icon{width:32px;min-width:32px;height:32px;font-size:1.1rem}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.fade-in-up{animation:fadeInUp .6s ease forwards}.fade-in{animation:fadeIn .4s ease forwards}.delay-1{animation-delay:.1s}.delay-2{animation-delay:.2s}.delay-3{animation-delay:.3s}.delay-4{animation-delay:.4s}.delay-5{animation-delay:.5s}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:rgba(59,130,246,.3);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:rgba(59,130,246,.5)}.file-input-hidden{display:none}.settings-section{margin-bottom:var(--space-xl)}.settings-section h2{font-size:1.1rem;font-weight:700;margin-bottom:var(--space-md)}.schedule-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:8px}@media (max-width:1024px){.schedule-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.schedule-grid{grid-template-columns:1fr}}