:root{--primary: #2563eb;--primary-hover: #1d4ed8;--bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);--card-bg: #ffffff;--text-main: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--radius: 12px;--item-bg: #f8fafc;--input-bg: #ffffff}[data-theme=dark]{--primary: #3b82f6;--primary-hover: #60a5fa;--bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);--card-bg: #1e293b;--text-main: #f8fafc;--text-muted: #94a3b8;--border: #334155;--shadow: 0 10px 15px -3px rgba(0, 0, 0, .4);--item-bg: #334155;--input-bg: #0f172a}*{box-sizing:border-box;transition:background-color .3s ease,color .3s ease,border-color .3s ease,transform .2s ease,box-shadow .2s ease}body{margin:0;padding:0;font-family:Inter,-apple-system,system-ui,sans-serif;background:var(--bg-gradient);color:var(--text-main);min-height:100vh;display:flex;justify-content:center;align-items:flex-start}.App{width:100%;max-width:600px;margin:40px 20px;padding:32px;background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow)}.header-top{display:flex;justify-content:flex-end;margin-bottom:8px}.theme-toggle{background:var(--item-bg);border:1px solid var(--border);color:var(--text-main);padding:8px 16px;border-radius:20px;font-weight:600;font-size:14px;cursor:pointer;display:flex;align-items:center;gap:8px}.theme-toggle:hover{background:var(--border)}header{text-align:center;margin-bottom:32px}.title{font-size:36px;font-weight:800;margin:0;background:linear-gradient(to right,#60a5fa,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-1px}.tagline{color:var(--text-muted);margin-top:4px;font-weight:500}#task-form{margin-bottom:24px}#inp{display:flex;gap:12px;margin-bottom:12px}#inp input{flex:1;padding:12px 16px;border:2px solid var(--border);border-radius:var(--radius);font-size:16px;outline:none;background:var(--input-bg);color:var(--text-main)}#inp input:focus{border-color:var(--primary);box-shadow:0 0 0 4px #3b82f633}button{cursor:pointer;font-family:inherit;border:none;outline:none}#inp button{background:var(--primary);color:#fff;padding:0 28px;border-radius:var(--radius);font-weight:700;white-space:nowrap;box-shadow:0 2px 4px #0003}#inp button:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 4px 12px #3b82f64d}#btns{display:flex;gap:12px}#btns select{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;background-color:var(--input-bg);color:var(--text-main);font-size:14px;cursor:pointer}#error{color:#f87171;font-size:14px;margin-bottom:12px;font-weight:500;display:block}.task-list{margin:24px 0}.task-list ul{list-style:none;padding:0;margin:0}.task-list li{display:flex;align-items:center;justify-content:space-between;padding:16px;background:var(--item-bg);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;gap:16px}.task-list li:hover{border-color:var(--primary);transform:scale(1.01);box-shadow:var(--shadow)}.task-info{flex:1;display:flex;flex-direction:column}.task-info span{display:block;font-weight:600;font-size:16px;word-break:break-word;overflow-wrap:anywhere}.task-info small{color:var(--text-muted);font-size:12px;text-transform:uppercase;letter-spacing:.5px}.task-actions{display:flex;gap:10px;align-items:center}.task-list button{padding:10px 16px;font-weight:600;border-radius:10px;font-size:14px;display:flex;align-items:center;gap:6px;background:transparent}.btn-complete{color:#10b981;background:#10b9811a!important}.btn-complete:hover{background:#10b98133!important;transform:scale(1.05)}.completed{opacity:.6}.completed span{text-decoration:line-through;color:var(--text-muted)}.completed .btn-complete{color:var(--text-muted);background:var(--border)!important}.btn-delete{color:#ef4444;background:#ef44441a!important;padding:10px!important;display:flex;align-items:center;justify-content:center;transition:all .3s cubic-bezier(.4,0,.2,1)}.btn-delete svg{transition:transform .3s cubic-bezier(.4,0,.2,1)}.btn-delete:hover{background:#ef4444!important;color:#fff!important;transform:translateY(-2px);box-shadow:0 4px 12px #ef44444d}.btn-delete:hover svg{transform:scale(1.1)}.btn-delete:active{transform:scale(.95)}.progress-tracker{background:var(--item-bg);padding:20px;border-radius:var(--radius);margin-top:32px}.progress-tracker p{margin:0 0 12px;font-weight:600;font-size:14px;color:var(--text-muted)}.progress-bar{height:8px;background:var(--border);border-radius:4px;overflow:hidden}.progress{height:100%;background:linear-gradient(to right,#3b82f6,#10b981);border-radius:4px}.clear-btn{width:100%;margin-top:32px;padding:14px;background:transparent;color:#ef4444;border:2px solid rgba(239,68,68,.2);border-radius:var(--radius);font-weight:700;letter-spacing:.5px;text-transform:uppercase;font-size:13px}.clear-btn:hover{background:#ef4444;color:#fff;box-shadow:0 4px 12px #ef44444d}@media (max-width: 480px){.App{margin:0;padding:20px;border-radius:0;min-height:100vh}#inp{flex-direction:column;gap:10px}#inp button{padding:14px;width:100%}.task-list li{flex-direction:column;align-items:stretch;gap:16px;padding:20px}.task-actions{width:100%;justify-content:flex-end;border-top:1px solid var(--border);padding-top:12px}.task-list button{flex:1;justify-content:center}}