.navbar{background-color:var(--surface);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:100;padding:var(--spacing-md) 0}.navbar-container{display:flex;justify-content:space-between;align-items:center}.logo h1{font-size:1.5rem;margin:0;color:var(--primary)}.logo span{font-size:.875rem;color:var(--text-muted);display:block}.desktop-nav{display:flex;align-items:center;gap:var(--spacing-xl)}.nav-link{font-weight:500;color:var(--text-main)}.nav-link:hover{color:var(--primary)}.user-menu{display:flex;align-items:center;gap:var(--spacing-md);font-weight:600;color:var(--primary-dark)}.btn-icon{color:var(--text-muted);padding:.5rem;border-radius:var(--radius-full);transition:all var(--transition-fast)}.btn-icon:hover{background-color:var(--background);color:var(--danger)}.mobile-menu-btn{display:none;color:var(--text-main)}.mobile-nav{display:none;flex-direction:column;padding:var(--spacing-md);background-color:var(--surface);border-top:1px solid var(--border);position:absolute;top:100%;left:0;right:0;box-shadow:var(--shadow-md)}.mobile-nav a{padding:var(--spacing-md);border-bottom:1px solid var(--border)}.mobile-nav a:last-child{border-bottom:none}.w-full{width:100%;display:flex}@media(max-width:768px){.desktop-nav{display:none}.mobile-menu-btn{display:block}.mobile-nav{display:flex}}.footer{background-color:#1e293b;color:#f8fafc;padding-top:var(--spacing-2xl);margin-top:auto}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-xl);padding-bottom:var(--spacing-2xl)}.footer-section h3{color:#fff;font-size:1.25rem;margin-bottom:var(--spacing-lg);position:relative}.footer-section h3:after{content:"";position:absolute;left:0;bottom:-8px;width:40px;height:3px;background-color:var(--primary);border-radius:var(--radius-full)}.footer-section p{color:#94a3b8;line-height:1.6}.social-links{display:flex;gap:var(--spacing-md);margin-top:var(--spacing-lg)}.social-links a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background-color:#ffffff1a;border-radius:var(--radius-full);transition:all var(--transition-fast);color:#fff}.social-links a:hover{background-color:var(--primary);transform:translateY(-3px)}.footer-section ul{list-style:none;padding:0}.footer-section ul li{margin-bottom:var(--spacing-sm)}.footer-section ul li a{color:#94a3b8;transition:color var(--transition-fast)}.footer-section ul li a:hover{color:var(--primary-light);padding-left:5px}.contact-list li{display:flex;align-items:center;gap:var(--spacing-sm);color:#94a3b8}.footer-bottom{background-color:#0f172a;padding:var(--spacing-lg) 0;border-top:1px solid rgba(255,255,255,.1)}.footer-bottom .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-md)}.footer-bottom p{color:#64748b;font-size:.875rem}.footer-links{display:flex;gap:var(--spacing-lg)}.footer-links a{color:#64748b;font-size:.875rem}.footer-links a:hover{color:#fff}@media(max-width:768px){.footer-bottom .container{flex-direction:column;text-align:center}}.hero{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;padding:var(--spacing-2xl) 0;text-align:center}.hero-content{max-width:800px}.hero-title{font-size:3rem;margin-bottom:var(--spacing-md);color:#fff}.hero-subtitle{font-size:1.25rem;margin-bottom:var(--spacing-xl);opacity:.9;line-height:1.6}.hero-buttons{display:flex;gap:var(--spacing-md);justify-content:center}.card{background:var(--surface);padding:var(--spacing-xl);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform var(--transition-normal),box-shadow var(--transition-normal);position:relative;overflow:hidden;border:1px solid var(--border)}.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-xl)}.card-icon{color:var(--primary);margin-bottom:var(--spacing-md);background:#2563eb1a;width:60px;height:60px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full)}.card h3{font-size:1.25rem;margin-bottom:var(--spacing-sm)}.card p{color:var(--text-muted);font-size:.95rem}.card-badge{position:absolute;top:var(--spacing-md);right:var(--spacing-md);background:var(--secondary);color:#fff;font-size:.75rem;padding:.25rem .75rem;border-radius:var(--radius-full);font-weight:600}.notes-list{display:flex;flex-direction:column;gap:var(--spacing-md);max-width:900px;margin:0 auto}.notes-item{display:flex;justify-content:space-between;align-items:center;background:var(--surface);padding:var(--spacing-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:all var(--transition-fast)}.notes-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow-md)}.notes-info h4{margin-bottom:var(--spacing-xs);color:var(--text-main)}.notes-info p{color:var(--text-muted);font-size:.9rem}.notes-action{text-align:right;min-width:120px}.price{font-size:1.25rem;font-weight:700;color:var(--text-main);margin-bottom:var(--spacing-xs)}.price.free{color:var(--accent)}.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-lg)}.news-item{background:var(--surface);padding:var(--spacing-lg);border-radius:var(--radius-md);border-left:4px solid var(--primary);box-shadow:var(--shadow-sm)}.news-date{font-size:.85rem;color:var(--text-muted);margin-bottom:var(--spacing-xs);display:flex;align-items:center;gap:.5rem}.news-item h4{font-size:1.1rem;margin-bottom:var(--spacing-sm)}.news-item p{color:var(--text-muted);font-size:.95rem;line-height:1.5}.text-center{text-align:center}.mt-xl{margin-top:var(--spacing-xl)}.bg-light{background-color:#f1f5f9}@media(max-width:768px){.hero-title{font-size:2rem}.notes-item{flex-direction:column;text-align:center;gap:var(--spacing-md)}.notes-action{text-align:center;width:100%}}.auth-page{min-height:80vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl) var(--spacing-md);background-color:var(--background)}.auth-container{background:var(--surface);width:100%;max-width:450px;padding:var(--spacing-2xl);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);border:1px solid var(--border)}.auth-header{text-align:center;margin-bottom:var(--spacing-xl)}.auth-header h2{font-size:1.75rem;color:var(--primary-dark);margin-bottom:var(--spacing-xs)}.auth-header p{color:var(--text-muted)}.auth-error{background-color:#fef2f2;color:var(--danger);padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg);font-size:.9rem;text-align:center;border:1px solid #FECACA}.auth-form{display:flex;flex-direction:column;gap:var(--spacing-lg)}.form-group label{display:block;font-weight:500;margin-bottom:var(--spacing-xs);color:var(--text-main);font-size:.9rem}.input-wrapper{position:relative;display:flex;align-items:center}.input-wrapper svg{position:absolute;left:1rem;color:var(--text-muted)}.input-wrapper input{width:100%;padding:.75rem 1rem .75rem 2.75rem;border:1px solid var(--border);border-radius:var(--radius-md);font-size:1rem;transition:all var(--transition-fast);font-family:var(--font-sans)}.input-wrapper input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.auth-footer{margin-top:var(--spacing-xl);text-align:center;font-size:.95rem;color:var(--text-muted)}.text-link{color:var(--primary);font-weight:600;text-decoration:none}.text-link:hover{text-decoration:underline}.notes-page{padding:var(--spacing-2xl) 0;background-color:var(--background)}.notes-header{text-align:center;margin-bottom:var(--spacing-xl)}.notes-controls{display:flex;flex-direction:column;gap:var(--spacing-lg);margin-bottom:var(--spacing-2xl);align-items:center}.search-bar{position:relative;width:100%;max-width:500px}.search-bar svg{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-muted)}.search-bar input{width:100%;padding:.75rem 1rem .75rem 2.75rem;border:1px solid var(--border);border-radius:var(--radius-full);font-size:1rem;transition:all var(--transition-fast)}.search-bar input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.filter-tabs{display:flex;gap:var(--spacing-sm);flex-wrap:wrap;justify-content:center}.filter-btn{padding:.5rem 1rem;border-radius:var(--radius-full);background:var(--surface);border:1px solid var(--border);color:var(--text-muted);font-size:.9rem;transition:all var(--transition-fast)}.filter-btn:hover,.filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.notes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg)}.note-card{background:var(--surface);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border);display:flex;flex-direction:column;transition:transform var(--transition-normal)}.note-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}.note-header{display:flex;justify-content:space-between;margin-bottom:var(--spacing-sm)}.note-code{font-weight:700;color:var(--primary);font-size:.9rem;background:#2563eb1a;padding:.25rem .5rem;border-radius:var(--radius-sm)}.note-badge{font-size:.75rem;font-weight:600;padding:.25rem .5rem;border-radius:var(--radius-full)}.note-badge.free{background:#d1fae5;color:#059669}.note-badge.paid{background:#fef3c7;color:#d97706}.note-title{font-size:1.1rem;margin-bottom:var(--spacing-xs);flex-grow:1}.note-category{color:var(--text-muted);font-size:.85rem;margin-bottom:var(--spacing-lg)}.note-footer{margin-top:auto}.note-price{font-size:1.25rem;font-weight:700;margin-bottom:var(--spacing-sm);color:var(--text-main)}.w-full{width:100%}.dashboard-page{padding:var(--spacing-2xl) 0;background-color:var(--background);min-height:80vh}.dashboard-header{margin-bottom:var(--spacing-xl)}.dashboard-header h2{font-size:2rem;color:var(--primary-dark);margin-bottom:var(--spacing-xs)}.dashboard-header p{color:var(--text-muted)}.dashboard-grid{display:grid;grid-template-columns:250px 1fr;gap:var(--spacing-xl)}.dashboard-sidebar{display:flex;flex-direction:column;gap:var(--spacing-md)}.stat-card{background:var(--surface);padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border);display:flex;align-items:center;gap:var(--spacing-md)}.stat-icon{background:#2563eb1a;color:var(--primary);padding:var(--spacing-sm);border-radius:var(--radius-md)}.stat-info h3{font-size:1.5rem;margin:0;color:var(--text-main)}.stat-info p{margin:0;color:var(--text-muted);font-size:.875rem}.dashboard-content{background:var(--surface);padding:var(--spacing-xl);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border)}.section-subtitle{font-size:1.25rem;margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-sm);border-bottom:1px solid var(--border)}.purchased-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.purchased-item{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md);background:var(--background);border-radius:var(--radius-md);border:1px solid var(--border);transition:all var(--transition-fast)}.purchased-item:hover{border-color:var(--primary-light)}.item-info h4{font-size:1rem;margin-bottom:.25rem}.purchase-date{font-size:.85rem;color:var(--text-muted)}.empty-state{text-align:center;padding:var(--spacing-2xl);color:var(--text-muted)}@media(max-width:768px){.dashboard-grid{grid-template-columns:1fr}.purchased-item{flex-direction:column;text-align:center;gap:var(--spacing-md)}}:root{--primary: #2563EB;--primary-dark: #1E40AF;--primary-light: #60A5FA;--secondary: #F59E0B;--accent: #10B981;--danger: #EF4444;--background: #F8FAFC;--surface: #FFFFFF;--text-main: #1E293B;--text-muted: #64748B;--border: #E2E8F0;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-heading: "Outfit", sans-serif;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--transition-fast: .15s ease;--transition-normal: .3s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased}body{background-color:var(--background);color:var(--text-main);line-height:1.5;min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.2;margin-bottom:var(--spacing-md)}a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}button{cursor:pointer;font-family:inherit;border:none;background:none}img{max-width:100%;height:auto;display:block}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--spacing-md)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;transition:all var(--transition-fast);gap:.5rem}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:#fff;color:var(--primary);border:1px solid var(--primary)}.btn-secondary:hover{background-color:var(--primary);color:#fff}.section{padding:var(--spacing-2xl) 0}.section-title{text-align:center;font-size:2.5rem;margin-bottom:var(--spacing-xl);color:var(--text-main)}.grid{display:grid;gap:var(--spacing-lg)}.grid-cols-3{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .6s ease-out forwards}