@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";:root{--primary-900: #062e2e;--primary-800: #0a3d3d;--primary-700: #0e4f4f;--primary-600: #136868;--primary-500: #1a8d8d;--primary-400: #25a8a8;--primary-300: #3dc4c4;--primary-200: #6ddada;--primary-100: #a8ebeb;--primary-50: #e0f7f7;--accent-600: #b8860b;--accent-500: #d4a017;--accent-400: #e8b830;--accent-300: #f0cc5a;--accent-200: #f5dd8a;--accent-100: #faeebb;--neutral-950: #080d17;--neutral-900: #0f1729;--neutral-800: #1a2236;--neutral-700: #2d3748;--neutral-600: #4a5568;--neutral-500: #718096;--neutral-400: #a0aec0;--neutral-300: #cbd5e0;--neutral-200: #e2e8f0;--neutral-100: #edf2f7;--neutral-50: #f7fafc;--white: #ffffff;--success: #10b981;--success-light: #d1fae5;--warning: #f59e0b;--warning-light: #fef3c7;--danger: #ef4444;--danger-light: #fee2e2;--info: #3b82f6;--info-light: #dbeafe;--gradient-primary: linear-gradient(135deg, #0e4f4f 0%, #1a8d8d 50%, #25a8a8 100%);--gradient-dark: linear-gradient(160deg, #062e2e 0%, #0a3d3d 30%, #0e4f4f 60%, #125858 100%);--gradient-accent: linear-gradient(135deg, #d4a017 0%, #e8b830 100%);--gradient-hero: linear-gradient(135deg, #062e2e 0%, #0a3d3d 25%, #0e4f4f 50%, #1a8d8d 75%, #25a8a8 100%);--gradient-card: linear-gradient(145deg, rgba(255, 255, 255, .95) 0%, rgba(255, 255, 255, .85) 100%);--gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, .12) 0%, rgba(255, 255, 255, .04) 100%);--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06), 0 2px 4px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 24px rgba(0, 0, 0, .08), 0 4px 8px rgba(0, 0, 0, .04);--shadow-xl: 0 20px 40px rgba(0, 0, 0, .1), 0 8px 16px rgba(0, 0, 0, .06);--shadow-glow: 0 0 24px rgba(26, 141, 141, .25);--shadow-glow-accent: 0 0 24px rgba(212, 160, 23, .25);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--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);--transition-spring: .5s cubic-bezier(.34, 1.56, .64, 1);--sidebar-width: 270px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-family);background:linear-gradient(135deg,#edf2f7,#e2e8f0,#edf2f7);color:var(--neutral-800);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}a{text-decoration:none;color:inherit}button{cursor:pointer;border:none;background:none;font-family:inherit}input,select,textarea{font-family:inherit}img{max-width:100%;display:block}ul,ol{list-style:none}.app-layout{display:flex;min-height:100vh}.main-content{flex:1;margin-left:var(--sidebar-width);padding:var(--space-8);transition:margin-left var(--transition-base);min-height:100vh}.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:var(--gradient-dark);display:flex;flex-direction:column;z-index:100;overflow:hidden;border-right:1px solid rgba(255,255,255,.06)}.sidebar:after{content:"";position:absolute;top:0;right:0;width:1px;height:100%;background:linear-gradient(180deg,transparent,rgba(26,141,141,.3),transparent)}.sidebar-header{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-6) var(--space-5);border-bottom:1px solid rgba(255,255,255,.08);background:#0000001a}.sidebar-logo{width:44px;height:44px;border-radius:var(--radius-md);object-fit:cover;flex-shrink:0;box-shadow:0 2px 12px #0000004d}.sidebar-brand{display:flex;flex-direction:column}.sidebar-brand h1{font-size:var(--font-size-lg);font-weight:800;color:var(--white);letter-spacing:-.02em;line-height:1.2}.sidebar-brand span{font-size:.65rem;color:var(--primary-300);font-weight:600;letter-spacing:.15em;text-transform:uppercase}.sidebar-user{padding:var(--space-5);display:flex;align-items:center;gap:var(--space-3);border-bottom:1px solid rgba(255,255,255,.06);background:#ffffff08}.sidebar-avatar{width:40px;height:40px;border-radius:var(--radius-full);background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:var(--font-size-sm);flex-shrink:0;border:2px solid rgba(255,255,255,.15);box-shadow:0 2px 8px #0003}.sidebar-user-info h3{font-size:var(--font-size-sm);font-weight:600;color:var(--white);line-height:1.3}.sidebar-user-role{font-size:var(--font-size-xs);color:var(--primary-200);display:flex;align-items:center;gap:var(--space-1)}.sidebar-user-role .role-dot{width:6px;height:6px;border-radius:50%;background:var(--success);display:inline-block;box-shadow:0 0 6px var(--success)}.sidebar-nav{flex:1;overflow-y:auto;padding:var(--space-3) 0}.sidebar-section{padding:0 var(--space-4);margin-bottom:var(--space-3)}.sidebar-section-title{font-size:.6rem;font-weight:700;color:#ffffff4d;letter-spacing:.15em;text-transform:uppercase;padding:0 var(--space-3);margin-bottom:var(--space-2)}.sidebar-link{display:flex;align-items:center;gap:var(--space-3);padding:9px var(--space-3);border-radius:var(--radius-md);color:#fff9;font-size:var(--font-size-sm);font-weight:500;transition:all var(--transition-fast);margin-bottom:1px;position:relative}.sidebar-link:hover{background:#ffffff12;color:var(--white)}.sidebar-link.active{background:linear-gradient(135deg,#1a8d8d66,#1a8d8d33);color:var(--white);box-shadow:inset 0 0 0 1px #1a8d8d4d}.sidebar-link.active:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:60%;background:var(--primary-400);border-radius:0 3px 3px 0}.sidebar-link .icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.05rem}.sidebar-link .badge{margin-left:auto;background:var(--danger);color:var(--white);font-size:.6rem;font-weight:700;padding:2px 7px;border-radius:var(--radius-full);min-width:18px;text-align:center}.sidebar-footer{padding:var(--space-4) var(--space-5);border-top:1px solid rgba(255,255,255,.06)}.sidebar-logout{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3);border-radius:var(--radius-md);color:#ffffff73;font-size:var(--font-size-sm);font-weight:500;width:100%;transition:all var(--transition-fast)}.sidebar-logout:hover{background:#ef44441a;color:var(--danger)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-8)}.page-header-left .page-greeting{font-size:var(--font-size-xs);font-weight:700;color:var(--primary-500);letter-spacing:.1em;text-transform:uppercase;margin-bottom:2px}.page-header-left h1{font-size:var(--font-size-3xl);font-weight:800;color:var(--neutral-900);letter-spacing:-.03em}.page-header-left p{font-size:var(--font-size-sm);color:var(--neutral-500);margin-top:2px}.page-header-right{display:flex;align-items:center;gap:var(--space-4)}.header-date{display:flex;align-items:center;gap:var(--space-2);color:var(--neutral-500);font-size:var(--font-size-sm)}.header-notification{position:relative;width:42px;height:42px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md);background:var(--white);box-shadow:var(--shadow-sm);transition:all var(--transition-fast);font-size:1.2rem;color:var(--neutral-600);border:1px solid var(--neutral-200)}.header-notification:hover{box-shadow:var(--shadow-md);color:var(--primary-500);border-color:var(--primary-200)}.header-notification .notif-badge{position:absolute;top:8px;right:8px;width:8px;height:8px;border-radius:50%;background:var(--danger);border:2px solid var(--white);box-shadow:0 0 4px var(--danger)}.card{background:var(--white);border-radius:var(--radius-lg);padding:var(--space-6);box-shadow:var(--shadow-sm);border:1px solid rgba(226,232,240,.8);transition:all var(--transition-base);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.card:hover{box-shadow:var(--shadow-md);border-color:#1a8d8d26}.card-glass{background:#ffffffb3;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.5)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-5)}.card-title{font-size:var(--font-size-lg);font-weight:700;color:var(--neutral-900)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-5);margin-bottom:var(--space-8)}.stat-card{background:var(--white);border-radius:var(--radius-lg);padding:var(--space-5) var(--space-6);box-shadow:var(--shadow-sm);border:1px solid rgba(226,232,240,.8);display:flex;align-items:center;justify-content:space-between;transition:all var(--transition-base);position:relative;overflow:hidden}.stat-card:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;border-radius:0 4px 4px 0}.stat-card.primary:before{background:var(--primary-500)}.stat-card.success:before{background:var(--success)}.stat-card.warning:before{background:var(--warning)}.stat-card.info:before{background:var(--info)}.stat-card.danger:before{background:var(--danger)}.stat-card.accent:before{background:var(--accent-500)}.stat-card:after{content:"";position:absolute;top:-30%;right:-15%;width:100px;height:100px;background:currentColor;opacity:.03;border-radius:50%}.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#1a8d8d1a}.stat-info h3{font-size:var(--font-size-xs);font-weight:700;color:var(--primary-600);letter-spacing:.05em;text-transform:uppercase;margin-bottom:2px}.stat-info .stat-value{font-size:var(--font-size-3xl);font-weight:800;color:var(--neutral-900);line-height:1}.stat-info .stat-desc{font-size:var(--font-size-xs);color:var(--neutral-500);margin-top:2px}.stat-icon{width:50px;height:50px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.5rem}.stat-icon.primary{background:var(--primary-50)}.stat-icon.success{background:var(--success-light)}.stat-icon.warning{background:var(--warning-light)}.stat-icon.info{background:var(--info-light)}.stat-icon.danger{background:var(--danger-light)}.stat-icon.accent{background:var(--accent-100)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px var(--space-5);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:600;transition:all var(--transition-fast);position:relative;overflow:hidden}.btn:active{transform:scale(.97)}.btn-primary{background:var(--gradient-primary);color:var(--white);box-shadow:0 2px 10px #1a8d8d4d}.btn-primary:hover{box-shadow:0 4px 20px #1a8d8d66;transform:translateY(-1px)}.btn-danger{background:var(--danger);color:var(--white);box-shadow:0 2px 10px #ef444440}.btn-danger:hover{box-shadow:0 4px 20px #ef444459}.btn-success{background:var(--success);color:var(--white);box-shadow:0 2px 10px #10b98140}.btn-outline{background:transparent;border:1.5px solid var(--neutral-300);color:var(--neutral-700)}.btn-outline:hover{border-color:var(--primary-500);color:var(--primary-600);background:var(--primary-50)}.btn-sm{padding:6px var(--space-3);font-size:var(--font-size-xs)}.btn-lg{padding:var(--space-4) var(--space-8);font-size:var(--font-size-base)}.btn-google{display:flex;align-items:center;justify-content:center;gap:var(--space-3);width:100%;padding:12px;border-radius:var(--radius-md);background:var(--white);border:2px solid var(--neutral-200);font-size:var(--font-size-sm);font-weight:600;color:var(--neutral-700);cursor:pointer;transition:all var(--transition-fast);font-family:inherit}.btn-google:hover{border-color:var(--neutral-400);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-google:active{transform:scale(.98)}.btn-google:disabled{opacity:.6;cursor:not-allowed}.form-group{margin-bottom:var(--space-5)}.form-label{display:block;font-size:var(--font-size-sm);font-weight:600;color:var(--neutral-700);margin-bottom:var(--space-2)}.form-input{width:100%;padding:10px var(--space-4);border:2px solid var(--neutral-200);border-radius:var(--radius-md);font-size:var(--font-size-sm);color:var(--neutral-800);background:var(--white);transition:all var(--transition-fast);outline:none}.form-input:focus{border-color:var(--primary-400);box-shadow:0 0 0 3px #1a8d8d14}.form-input::placeholder{color:var(--neutral-400)}.form-select{width:100%;padding:10px var(--space-4);border:2px solid var(--neutral-200);border-radius:var(--radius-md);font-size:var(--font-size-sm);color:var(--neutral-800);background:var(--white);transition:all var(--transition-fast);outline:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 5.646a.5.5 0 0 1 .708 0L8 8.293l2.646-2.647a.5.5 0 0 1 .708.708l-3 3a.5.5 0 0 1-.708 0l-3-3a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.form-select:focus{border-color:var(--primary-400);box-shadow:0 0 0 3px #1a8d8d14}.table-container{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--neutral-200);background:var(--white)}table{width:100%;border-collapse:collapse}thead th{padding:10px var(--space-4);text-align:left;font-size:var(--font-size-xs);font-weight:700;color:var(--neutral-500);text-transform:uppercase;letter-spacing:.05em;background:var(--neutral-50);border-bottom:2px solid var(--neutral-200)}tbody td{padding:10px var(--space-4);font-size:var(--font-size-sm);color:var(--neutral-700);border-bottom:1px solid var(--neutral-100)}tbody tr{transition:all var(--transition-fast)}tbody tr:hover{background:#1a8d8d0a}tbody tr:last-child td{border-bottom:none}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:600}.badge-primary{background:var(--primary-50);color:var(--primary-700)}.badge-success{background:var(--success-light);color:#047857}.badge-warning{background:var(--warning-light);color:#b45309}.badge-danger{background:var(--danger-light);color:#b91c1c}.badge-info{background:var(--info-light);color:#1d4ed8}.badge-neutral{background:var(--neutral-100);color:var(--neutral-600)}.tabs{display:flex;gap:2px;padding:4px;background:var(--neutral-100);border-radius:var(--radius-md);margin-bottom:var(--space-6);border:1px solid var(--neutral-200)}.tab{flex:1;padding:10px var(--space-4);border-radius:var(--radius-sm);font-size:var(--font-size-sm);font-weight:600;color:var(--neutral-500);text-align:center;transition:all var(--transition-fast)}.tab:hover{color:var(--neutral-700);background:#ffffff80}.tab.active{background:var(--white);color:var(--primary-600);box-shadow:var(--shadow-sm)}.modal-overlay{position:fixed;inset:0;background:#080d1799;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.modal{background:var(--white);border-radius:var(--radius-xl);padding:var(--space-8);width:90%;max-width:520px;max-height:85vh;overflow-y:auto;animation:slideUp .3s var(--transition-spring);box-shadow:var(--shadow-xl)}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-6)}.modal-header h2{font-size:var(--font-size-xl);font-weight:700}.modal-close{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);color:var(--neutral-500);font-size:1rem;transition:all var(--transition-fast)}.modal-close:hover{background:var(--neutral-100);color:var(--neutral-800)}.modal-actions{display:flex;justify-content:flex-end;gap:var(--space-3);margin-top:var(--space-6)}.toggle{position:relative;display:inline-block;width:44px;height:24px;cursor:pointer}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;inset:0;background:var(--neutral-300);border-radius:24px;transition:all var(--transition-base)}.toggle-slider:before{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;background:var(--white);border-radius:50%;transition:all var(--transition-base);box-shadow:0 1px 3px #0003}.toggle input:checked+.toggle-slider{background:var(--primary-500)}.toggle input:checked+.toggle-slider:before{transform:translate(20px)}.student-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:var(--space-4)}.student-card{background:var(--white);border-radius:var(--radius-lg);padding:var(--space-5);text-align:center;border:1px solid var(--neutral-200);transition:all var(--transition-base)}.student-card:hover{border-color:var(--primary-300);box-shadow:var(--shadow-md);transform:translateY(-2px)}.student-card.locked{border-color:var(--danger);background:var(--danger-light)}.student-avatar{width:48px;height:48px;border-radius:var(--radius-full);background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:var(--font-size-sm);margin:0 auto var(--space-3)}.student-card h4{font-size:var(--font-size-sm);font-weight:600}.student-card p{font-size:var(--font-size-xs);color:var(--neutral-500)}.student-status{display:flex;align-items:center;justify-content:center;gap:4px;font-size:var(--font-size-xs);color:var(--neutral-500);margin-top:var(--space-2)}.status-panel{background:var(--gradient-primary);border-radius:var(--radius-lg);padding:var(--space-6);color:var(--white)}.status-panel h3{font-size:var(--font-size-lg);font-weight:700;margin-bottom:var(--space-4)}.status-item{padding:var(--space-3) 0;border-top:1px solid rgba(255,255,255,.15)}.status-item h4{font-size:var(--font-size-sm);font-weight:600}.status-item p{font-size:var(--font-size-xs);color:#ffffffb3}.qr-container{display:flex;flex-direction:column;align-items:center}.qr-box{background:var(--white);padding:var(--space-6);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center}.empty-state{text-align:center;padding:var(--space-12) var(--space-6);color:var(--neutral-500)}.empty-icon{font-size:3rem;margin-bottom:var(--space-4)}.empty-state h3{font-size:var(--font-size-xl);font-weight:700;color:var(--neutral-700);margin-bottom:var(--space-2)}.empty-state p{font-size:var(--font-size-sm)}.toast{position:fixed;bottom:var(--space-8);right:var(--space-8);padding:var(--space-4) var(--space-6);border-radius:var(--radius-md);background:var(--neutral-900);color:var(--white);font-size:var(--font-size-sm);font-weight:500;box-shadow:var(--shadow-xl);z-index:2000;animation:slideUp .3s ease}.toast.success{background:var(--success)}.toast.warning{background:var(--warning);color:var(--neutral-900)}.toast.error{background:var(--danger)}.login-page{display:flex;min-height:100vh;position:relative;overflow:hidden}.login-particles{position:fixed;inset:0;pointer-events:none;z-index:0}.particle{position:absolute;background:#1a8d8d26;border-radius:50%;animation:floatParticle linear infinite}.login-brand{flex:1;background:var(--gradient-hero);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--white);position:relative;overflow:hidden;padding:var(--space-8)}.login-brand:after{content:"";position:absolute;top:-30%;right:-20%;width:400px;height:400px;background:#ffffff08;border-radius:50%}.login-brand-content{text-align:center;z-index:1;max-width:420px;animation:fadeIn .8s ease}.login-logo{width:100px;height:100px;border-radius:var(--radius-xl);margin:0 auto var(--space-6);box-shadow:0 8px 32px #0000004d;animation:floatLogo 3s ease-in-out infinite}.login-title{font-size:var(--font-size-4xl);font-weight:900;letter-spacing:-.03em}.login-subtitle{font-size:var(--font-size-base);color:#fff9;margin-top:var(--space-2)}.login-features{margin-top:var(--space-10);display:flex;flex-direction:column;gap:var(--space-4);text-align:left}.login-feature{display:flex;align-items:flex-start;gap:var(--space-3);animation:fadeIn .6s ease both}.login-feature-icon{width:40px;height:40px;border-radius:var(--radius-md);background:#ffffff1a;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1)}.login-feature strong{display:block;font-size:var(--font-size-sm);font-weight:600}.login-feature span{font-size:var(--font-size-xs);color:#ffffff80}.login-brand-footer{position:absolute;bottom:var(--space-6);font-size:var(--font-size-xs);color:#ffffff4d;z-index:1}.login-form-side{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--space-8);background:var(--neutral-50);position:relative;z-index:1}.login-card{width:100%;max-width:420px;animation:slideUp .5s ease}.login-card-header{margin-bottom:var(--space-8)}.login-card-header h2{font-size:var(--font-size-2xl);font-weight:800;letter-spacing:-.02em}.login-card-header p{font-size:var(--font-size-sm);color:var(--neutral-500);margin-top:4px}.login-divider{display:flex;align-items:center;gap:var(--space-4);margin:var(--space-6) 0;color:var(--neutral-400);font-size:var(--font-size-xs);font-weight:500}.login-divider:before,.login-divider:after{content:"";flex:1;height:1px;background:var(--neutral-200)}.login-error{padding:var(--space-3) var(--space-4);background:var(--danger-light);color:#b91c1c;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500;margin-bottom:var(--space-4);border:1px solid rgba(239,68,68,.2)}.login-card-footer{text-align:center;font-size:var(--font-size-xs);color:var(--neutral-400);margin-top:var(--space-8)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes floatLogo{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.05);opacity:.8}}@keyframes shimmer{0%{background-position:-200% center}to{background-position:200% center}}@keyframes floatParticle{0%{transform:translateY(100vh) scale(0);opacity:0}10%{opacity:1}90%{opacity:1}to{transform:translateY(-100vh) scale(1);opacity:0}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--neutral-300);border-radius:20px}::-webkit-scrollbar-thumb:hover{background:var(--neutral-400)}@media(max-width:1024px){.main-content{margin-left:0;padding:var(--space-4)}.sidebar{transform:translate(-100%)}.login-page{flex-direction:column}.login-brand{min-height:40vh}.stats-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.stats-grid{grid-template-columns:1fr}.page-header{flex-direction:column;align-items:flex-start;gap:var(--space-4)}.student-grid{grid-template-columns:repeat(2,1fr)}}