:root{--primary: #646cff;--primary-hover: #535bf2;--bg-color: #f0f2f5;--card-bg: #ffffff;--text-main: #213547;--text-secondary: #666;--border-radius: 12px;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--danger: #ef4444;--success: #22c55e}body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased;min-height:100vh}.app-container{max-width:800px;margin:0 auto;padding:2rem}.app-header{text-align:center;margin-bottom:3rem}.app-header h1{font-size:3rem;margin:0;background:linear-gradient(135deg,#646cff,#9f5afd);-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}.app-header p{color:var(--text-secondary);font-size:1.1rem;margin-top:.5rem}.main-content{background:var(--card-bg);padding:2rem;border-radius:var(--border-radius);box-shadow:var(--shadow)}.toolbar{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;align-items:center;margin-bottom:1.25rem}.filters{display:inline-flex;gap:.5rem}.btn-filter{padding:.55rem 1rem;border-radius:999px;border:1px solid #e5e7eb;background:#fff;color:var(--text-main);cursor:pointer;transition:all .2s}.btn-filter.active{background:var(--primary);color:#fff;border-color:var(--primary)}.input-search{padding:.75rem 1rem;border:1px solid #e5e7eb;border-radius:10px;font-size:1rem;width:100%;transition:border-color .2s,box-shadow .2s}.input-search:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #646cff1a}.toolbar-actions{display:flex;gap:.75rem;align-items:center;justify-content:flex-end;flex-wrap:wrap}.counts{display:flex;gap:.75rem;font-size:.95rem;color:var(--text-secondary)}.btn-secondary{background:#fff;color:var(--text-main);border:1px solid #e5e7eb;padding:.65rem 1.1rem;border-radius:8px;cursor:pointer;transition:all .2s}.btn-secondary:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.btn-secondary:disabled{opacity:.55;cursor:not-allowed}.pagination{margin-top:1.25rem;display:flex;gap:.75rem;align-items:center;justify-content:center}.page-info{color:var(--text-secondary)}.todo-form{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}.input-title,.input-description,.select-priority{padding:.8rem 1rem;border:1px solid #e5e7eb;border-radius:8px;font-size:1rem;flex:1;transition:border-color .2s}.input-title:focus,.input-description:focus,.select-priority:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #646cff1a}.input-title{flex:2}.select-priority{cursor:pointer;background-color:#fff}.btn-add{background-color:var(--primary);color:#fff;border:none;padding:.8rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;transition:background-color .2s}.btn-add:hover{background-color:var(--primary-hover)}.todo-list{display:flex;flex-direction:column;gap:1rem}.todo-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;border:1px solid #f3f4f6;border-radius:8px;background-color:#fafafa;transition:all .2s}.todo-item:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000000d}.todo-item.completed .todo-title{text-decoration:line-through;color:#9ca3af}.todo-content{display:flex;align-items:center;gap:1rem;flex:1}.checkbox{width:1.2rem;height:1.2rem;cursor:pointer;accent-color:var(--success)}.todo-text{flex:1}.todo-header{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.todo-title{margin:0;font-size:1.1rem;font-weight:500}.priority-badge{display:inline-flex;align-items:center;gap:.25rem;padding:.25rem .75rem;border-radius:999px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.priority-low{background-color:#dcfce7;color:#166534;border:1px solid #86efac}.priority-medium{background-color:#fef9c3;color:#854d0e;border:1px solid #fde047}.priority-high{background-color:#fed7aa;color:#9a3412;border:1px solid #fb923c}.priority-urgent{background-color:#fee2e2;color:#991b1b;border:1px solid #f87171}.todo-description{margin:.2rem 0 0;font-size:.9rem;color:var(--text-secondary)}.btn-delete{background-color:transparent;color:var(--danger);border:1px solid var(--danger);padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-size:.9rem;transition:all .2s}.btn-delete:hover{background-color:var(--danger);color:#fff}.empty-state{text-align:center;color:var(--text-secondary);padding:2rem;font-style:italic}.loading,.error-message{text-align:center;padding:1rem}.error-message{color:var(--danger);background-color:#fef2f2;border-radius:8px;margin-bottom:1rem}