@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";
:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-card:#ffffff0a;--bg-card-hover:#ffffff12;--bg-input:#ffffff0f;--border-color:#ffffff14;--border-glow:#6366f166;--text-primary:#f0f0f5;--text-secondary:#9ca3af;--text-muted:#6b7280;--accent:#6366f1;--accent-light:#818cf8;--accent-glow:#6366f126;--danger:#ef4444;--danger-hover:#dc2626;--success:#22c55e;--radius:16px;--radius-sm:10px;--shadow-lg:0 25px 50px -12px #00000080}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}body:before{content:"";z-index:-1;pointer-events:none;background:radial-gradient(at 20%,#6366f114 0%,#0000 50%),radial-gradient(at 80% 20%,#8b5cf60f 0%,#0000 50%),radial-gradient(at 50% 80%,#3b82f60d 0%,#0000 50%);width:200%;height:200%;animation:20s ease-in-out infinite alternate bgDrift;position:fixed;top:-50%;left:-50%}@keyframes bgDrift{0%{transform:translate(0)rotate(0)}to{transform:translate(-3%,2%)rotate(2deg)}}.container{max-width:640px;min-height:100vh;margin:0 auto;padding:60px 20px 40px}.header{text-align:center;margin-bottom:48px}.header h1{letter-spacing:-.03em;background:linear-gradient(135deg,var(--text-primary)0%,var(--accent-light)50%,var(--accent)100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:3rem;font-weight:800}.header p{color:var(--text-muted);font-size:.95rem;font-weight:400}.inputArea{gap:12px;margin-bottom:32px;display:flex}.inputGroup{flex-direction:column;flex:1;gap:10px;display:flex}.inputArea input{background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);outline:none;flex:1;padding:14px 20px;font-family:inherit;font-size:.95rem;transition:all .25s}.inputArea input::placeholder{color:var(--text-muted)}.inputArea input:focus{border-color:var(--border-glow);box-shadow:0 0 0 3px var(--accent-glow);background:#ffffff14}.addBtn{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;border:none;padding:14px 28px;font-family:inherit;font-size:.95rem;font-weight:600;transition:all .2s}.addBtn:hover{background:var(--accent-light);transform:translateY(-1px);box-shadow:0 6px 20px #6366f14d}.addBtn:active{transform:translateY(0)}.addBtn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.stats{justify-content:space-between;align-items:center;margin-bottom:20px;padding:0 4px;display:flex}.stats span{color:var(--text-muted);font-size:.82rem;font-weight:500}.stats .count{color:var(--accent-light);font-weight:700}.todoList{flex-direction:column;gap:10px;display:flex}.todoItem{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-sm);align-items:center;gap:14px;padding:16px 20px;transition:all .25s;animation:.3s slideIn;display:flex}.todoItem:hover{background:var(--bg-card-hover);border-color:#ffffff1f;transform:translate(4px)}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.checkbox{border:2px solid var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;padding:0;transition:all .2s;display:flex}.checkbox:hover{border-color:var(--accent)}.checkbox.checked{background:var(--accent);border-color:var(--accent)}.checkbox.checked:after{content:"✓";color:#fff;font-size:13px;font-weight:700;line-height:1}.todoContent{flex-direction:column;flex:1;gap:6px;display:flex}.todoText{color:var(--text-primary);font-size:.95rem;line-height:1.4;transition:all .25s}.todoText.completed{color:var(--text-muted);text-decoration:line-through}.todoDescription{color:var(--text-muted);font-size:.85rem;line-height:1.3}.todoMeta{color:var(--text-muted);letter-spacing:.01em;font-size:.75rem}.deleteBtn{color:var(--text-muted);cursor:pointer;opacity:0;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:6px;font-size:1.1rem;transition:all .2s;display:flex}.todoItem:hover .deleteBtn{opacity:1}.deleteBtn:hover{color:var(--danger);background:#ef44441a}.emptyState{text-align:center;color:var(--text-muted);padding:60px 20px}.emptyState .icon{opacity:.5;margin-bottom:16px;font-size:3rem}.emptyState p{font-size:.95rem;line-height:1.5}.loading{text-align:center;color:var(--text-muted);padding:60px 20px}.spinner{border:3px solid var(--border-color);border-top-color:var(--accent);border-radius:50%;width:32px;height:32px;margin:0 auto 16px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.error{text-align:center;color:var(--danger);border-radius:var(--radius-sm);background:#ef44440d;border:1px solid #ef444426;margin-bottom:20px;padding:40px 20px}.error .retryBtn{background:var(--danger);color:#fff;cursor:pointer;border:none;border-radius:8px;margin-top:12px;padding:8px 20px;font-family:inherit;font-weight:600;transition:background .2s}.error .retryBtn:hover{background:var(--danger-hover)}