*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(135deg,#f5f7fa,#e4e8ec);color:#1f2937;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;min-height:100vh}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#a1a1a1}.header{background:#fff;box-shadow:0 2px 8px #00000014;position:sticky;top:0;z-index:100}.header-container{justify-content:space-between;margin:0 auto;max-width:1200px;padding:1rem 2rem}.header-container,.logo{align-items:center;display:flex}.logo{color:#1f2937;gap:.5rem;text-decoration:none}.logo-icon{font-size:1.5rem}.logo-text{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#3b82f6,#10b981);-webkit-background-clip:text;background-clip:text;font-size:1.25rem;font-weight:700}.nav{display:flex;gap:1.5rem}.nav-link{border-radius:8px;color:#6b7280;font-weight:500;padding:.5rem 1rem;text-decoration:none;transition:all .2s ease}.nav-link:hover{background:#eff6ff;color:#3b82f6}.nav-link.active{background:#dbeafe;color:#3b82f6}.footer{background:#fff;border-top:1px solid #e5e7eb;padding:1.5rem 2rem;text-align:center}.footer-container{margin:0 auto;max-width:1200px}.footer p{color:#6b7280;font-size:.875rem}.home{margin:0 auto;max-width:1000px}.hero{padding:4rem 2rem;text-align:center}.hero-title{color:#1f2937;font-size:3rem;font-weight:700;line-height:1.2;margin-bottom:1.5rem}.gradient-text{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#3b82f6,#10b981);-webkit-background-clip:text;background-clip:text}.hero-subtitle{color:#6b7280;font-size:1.25rem;line-height:1.6;margin:0 auto 2rem;max-width:600px}.hero-actions{display:flex;gap:1rem;justify-content:center}.btn-primary{background:linear-gradient(135deg,#3b82f6,#2563eb);border-radius:12px;box-shadow:0 4px 12px #3b82f64d;color:#fff;display:inline-block;font-size:1rem;font-weight:600;padding:.875rem 2rem;text-decoration:none;transition:all .3s ease}.btn-primary:hover{box-shadow:0 8px 20px #3b82f666;transform:translateY(-2px)}.features{grid-gap:2rem;display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));padding:2rem}.feature-card{background:#fff;border-radius:16px;box-shadow:0 2px 8px #00000014;padding:2rem;text-align:center;transition:all .3s ease}.feature-card:hover{box-shadow:0 8px 16px #0000001f;transform:translateY(-4px)}.feature-icon{font-size:2.5rem;margin-bottom:1rem}.feature-card h3{color:#1f2937;font-size:1.25rem;font-weight:600;margin-bottom:.75rem}.feature-card p{color:#6b7280;font-size:.875rem;line-height:1.6}.note-card{background:#fff;border-left:4px solid;border-radius:12px;box-shadow:0 2px 8px #00000014;padding:1.5rem;transition:all .3s ease}.note-card:hover{box-shadow:0 8px 16px #0000001f;transform:translateY(-4px)}.note-header{align-items:flex-start;display:flex;gap:1rem;justify-content:space-between;margin-bottom:.75rem}.note-title{color:#1f2937;font-size:1.125rem;font-weight:600;margin:0}.note-category{border-radius:9999px;font-size:.75rem;font-weight:500;padding:.25rem .75rem;white-space:nowrap}.note-content{color:#4b5563;font-size:.875rem;line-height:1.6;margin-bottom:1rem;white-space:pre-wrap}.note-footer{align-items:center;border-top:1px solid #f3f4f6;display:flex;justify-content:space-between;padding-top:1rem}.note-date{color:#9ca3af;font-size:.75rem}.note-actions{display:flex;gap:.5rem}.btn-delete,.btn-edit{border:none;border-radius:6px;cursor:pointer;font-size:.75rem;font-weight:500;padding:.375rem .75rem;transition:all .2s ease}.btn-edit{background:#eff6ff;color:#3b82f6}.btn-edit:hover{background:#dbeafe}.btn-delete{background:#fef2f2;color:#ef4444}.btn-delete:hover{background:#fee2e2}.notes-page{margin:0 auto;max-width:1200px}.page-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:2rem}.page-header h1{color:#1f2937;font-size:2rem;font-weight:700}.btn-add{background:linear-gradient(135deg,#3b82f6,#2563eb);border:none;border-radius:10px;box-shadow:0 4px 12px #3b82f64d;color:#fff;cursor:pointer;font-size:.875rem;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.btn-add:hover{box-shadow:0 6px 16px #3b82f666;transform:translateY(-2px)}.loading{color:#6b7280;font-size:1.125rem}.empty-state,.loading{padding:4rem;text-align:center}.empty-state{background:#fff;border-radius:16px;box-shadow:0 2px 8px #00000014}.empty-state p{color:#6b7280;font-size:1.125rem}.notes-grid{grid-gap:1.5rem;display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}.modal-overlay{align-items:center;background:#00000080;bottom:0;display:flex;justify-content:center;left:0;position:fixed;right:0;top:0;z-index:1000}.modal-content{background:#fff;border-radius:16px;max-height:90vh;max-width:500px;overflow-y:auto;padding:2rem;width:90%}.modal-content h2{color:#1f2937;font-size:1.5rem;font-weight:600;margin-bottom:1.5rem}.form-group{margin-bottom:1.25rem}.form-group label{display:block;margin-bottom:.5rem}.form-group input,.form-group select,.form-group textarea{border:1px solid #e5e7eb;border-radius:8px;font-family:inherit;font-size:.875rem;padding:.75rem;transition:all .2s ease;width:100%}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a;outline:none}.form-group textarea{min-height:100px;resize:vertical}.color-picker{display:flex;gap:.5rem}.color-btn{border:2px solid #0000;border-radius:50%;cursor:pointer;height:32px;transition:all .2s ease;width:32px}.color-btn:hover{transform:scale(1.1)}.color-btn.selected{border-color:#1f2937;box-shadow:0 0 0 2px #fff,0 0 0 4px currentColor}.modal-actions{display:flex;gap:1rem;margin-top:1.5rem}.btn-cancel,.btn-save{border-radius:8px;cursor:pointer;flex:1 1;font-size:.875rem;font-weight:600;padding:.75rem;transition:all .2s ease}.btn-save{background:#3b82f6;border:none;color:#fff}.btn-save:hover{background:#2563eb}.btn-cancel{background:#f3f4f6;border:none;color:#374151}.btn-cancel:hover{background:#e5e7eb}.auth-container{align-items:center;display:flex;justify-content:center;min-height:calc(100vh - 200px);padding:2rem}.auth-card{background:#fff;border-radius:16px;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;max-width:420px;padding:2.5rem;width:100%}.auth-title{color:#1f2937;font-size:1.75rem;font-weight:700;margin-bottom:.5rem;text-align:center}.auth-subtitle{color:#6b7280;font-size:.95rem;margin-bottom:2rem;text-align:center}.auth-form{gap:1.25rem}.auth-form,.form-group{display:flex;flex-direction:column}.form-group{gap:.5rem}.form-group label{color:#374151;font-size:.875rem;font-weight:500}.form-group input{border:1px solid #d1d5db;border-radius:8px;font-size:1rem;outline:none;padding:.75rem 1rem;transition:all .2s ease}.form-group input:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.form-group input:disabled{background-color:#f3f4f6;cursor:not-allowed}.auth-button{background:linear-gradient(135deg,#3b82f6,#2563eb);border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:1rem;font-weight:600;margin-top:.5rem;padding:.875rem 1.5rem;transition:all .2s ease}.auth-button:hover:not(:disabled){box-shadow:0 4px 12px #3b82f666;transform:translateY(-1px)}.auth-button:disabled{cursor:not-allowed;opacity:.7}.auth-error{background-color:#fef2f2;border:1px solid #fecaca;border-radius:8px;color:#dc2626;font-size:.875rem;margin-bottom:1rem;padding:.75rem 1rem}.auth-switch{color:#6b7280;font-size:.875rem;margin-top:1.5rem;text-align:center}.auth-switch a{color:#3b82f6;font-weight:500;text-decoration:none}.auth-switch a:hover{text-decoration:underline}.loading-container{align-items:center;display:flex;flex-direction:column;gap:1rem;justify-content:center;min-height:200px}.loading-spinner{animation:spin .8s linear infinite;border:3px solid #e5e7eb;border-radius:50%;border-top-color:#3b82f6;height:40px;width:40px}@keyframes spin{to{transform:rotate(1turn)}}.app{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1 1;margin:0 auto;max-width:1200px;padding:2rem;width:100%}