:root{--bg-primary: #f5f6fa;--bg-secondary: #ffffff;--bg-card: #ffffff;--bg-card-hover: #f9f9ff;--bg-input: #f0f1f8;--bg-glass: rgba(255, 255, 255, .75);--accent-primary: #60a5fa;--accent-primary-hover: #4a93e8;--accent-secondary: #00b894;--accent-gradient: #60a5fa;--accent-gradient-btn: #60a5fa;--accent-danger: #e74c3c;--accent-danger-hover: #c0392b;--accent-success: #27ae60;--accent-warning: #f39c12;--text-primary: #2d3436;--text-secondary: #636e72;--text-muted: #b2bec3;--text-inverse: #ffffff;--border-subtle: rgba(96, 165, 250, .15);--border-card: rgba(0, 0, 0, .07);--shadow-sm: 0 1px 4px rgba(0, 0, 0, .06);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .1);--shadow-glow: 0 4px 24px rgba(96, 165, 250, .12);--shadow-glow-strong: 0 8px 40px rgba(96, 165, 250, .18);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);--transition-spring: .5s cubic-bezier(.34, 1.56, .64, 1)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(ellipse 700px 700px at 10% 10%,rgba(96,165,250,.07) 0%,transparent 70%),radial-gradient(ellipse 500px 500px at 90% 90%,rgba(0,184,148,.05) 0%,transparent 70%),radial-gradient(ellipse 600px 400px at 50% 40%,rgba(96,165,250,.04) 0%,transparent 70%);pointer-events:none;z-index:0;animation:meshFloat 25s ease-in-out infinite alternate}@keyframes meshFloat{0%{transform:scale(1) translate(0)}50%{transform:scale(1.04) translate(-15px,8px)}to{transform:scale(1) translate(8px,-8px)}}#root{position:relative;z-index:1}a{color:var(--accent-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--accent-primary-hover)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.auth-container{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px}.auth-card{width:100%;max-width:430px;background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-xl);padding:48px 40px;box-shadow:var(--shadow-lg),var(--shadow-glow);animation:fadeInUp .6s ease-out;position:relative;overflow:hidden}.auth-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--accent-gradient);border-radius:var(--radius-xl) var(--radius-xl) 0 0}.auth-logo{text-align:center;margin-bottom:8px}.auth-logo-icon{width:60px;height:60px;background:var(--accent-gradient-btn);border-radius:var(--radius-lg);display:inline-flex;align-items:center;justify-content:center;font-size:30px;margin-bottom:16px;box-shadow:0 6px 24px #60a5fa40;color:#fff}.auth-title{font-size:28px;font-weight:800;text-align:center;margin-bottom:6px;color:var(--accent-primary)}.auth-subtitle{text-align:center;color:var(--text-secondary);font-size:14px;margin-bottom:36px}.form-group{margin-bottom:20px}.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:8px;letter-spacing:.02em}.form-input{width:100%;padding:14px 16px;background:var(--bg-input);border:1.5px solid transparent;border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-family);font-size:15px;transition:all var(--transition-base);outline:none}.form-input::placeholder{color:var(--text-muted)}.form-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px #60a5fa1a;background:#fff}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border:none;border-radius:var(--radius-md);font-family:var(--font-family);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--transition-base);outline:none;position:relative;overflow:hidden}.btn:active{transform:scale(.97)}.btn-primary{background:var(--accent-gradient-btn);color:#fff;box-shadow:0 4px 16px #60a5fa4d;width:100%}.btn-primary:hover{background:var(--accent-primary-hover);box-shadow:0 6px 28px #60a5fa66;transform:translateY(-2px)}.btn-primary:active{transform:translateY(0) scale(.98)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.auth-footer{text-align:center;margin-top:28px;font-size:14px;color:var(--text-secondary)}.auth-footer a{font-weight:700;color:var(--accent-primary)}.auth-footer a:hover{text-decoration:underline}.auth-error{background:#e74c3c14;border:1px solid rgba(231,76,60,.2);color:var(--accent-danger);padding:12px 16px;border-radius:var(--radius-md);font-size:13px;font-weight:500;margin-bottom:20px;animation:scaleIn .2s ease-out}.auth-success{background:#27ae6014;border:1px solid rgba(39,174,96,.2);color:var(--accent-success);padding:12px 16px;border-radius:var(--radius-md);font-size:13px;font-weight:500;margin-bottom:20px;animation:scaleIn .2s ease-out}.dashboard{max-width:860px;margin:0 auto;padding:36px 24px 80px;animation:fadeIn .4s ease-out}.dashboard-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:36px;animation:fadeInUp .5s ease-out}.dashboard-brand{display:flex;align-items:center;gap:14px}.dashboard-brand-icon{width:46px;height:46px;background:var(--accent-gradient-btn);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;box-shadow:0 4px 16px #60a5fa40}.dashboard-brand h1{font-size:26px;font-weight:800;color:var(--accent-primary)}.dashboard-brand span{display:block;font-size:13px;color:var(--text-muted);font-weight:400;-webkit-text-fill-color:var(--text-muted)}.btn-logout{background:var(--bg-card);color:var(--text-secondary);border:1px solid var(--border-card);padding:10px 20px;border-radius:var(--radius-md);font-family:var(--font-family);font-size:13px;font-weight:500;cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;gap:8px;box-shadow:var(--shadow-sm)}.btn-logout:hover{background:#e74c3c0f;border-color:#e74c3c40;color:var(--accent-danger)}.stats-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px;animation:fadeInUp .6s ease-out}.stat-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);padding:22px 20px;text-align:center;transition:all var(--transition-base);box-shadow:var(--shadow-sm)}.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}.stat-number{font-size:34px;font-weight:800;line-height:1;margin-bottom:6px}.stat-number.total{color:var(--accent-primary)}.stat-number.completed{color:var(--accent-success)}.stat-number.pending{color:var(--accent-warning)}.stat-label{font-size:11px;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.1em}.add-todo{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);padding:20px;margin-bottom:24px;box-shadow:var(--shadow-sm);animation:fadeInUp .7s ease-out}.add-todo-form{display:flex;gap:12px;align-items:stretch}.add-todo-input{flex:1;padding:14px 18px;background:var(--bg-input);border:1.5px solid transparent;border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-family);font-size:15px;transition:all var(--transition-base);outline:none}.add-todo-input::placeholder{color:var(--text-muted)}.add-todo-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px #60a5fa1a;background:#fff}.btn-add{background:var(--accent-gradient-btn);color:#fff;border:none;border-radius:var(--radius-md);padding:14px 28px;font-family:var(--font-family);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;gap:8px;white-space:nowrap;box-shadow:0 4px 16px #60a5fa40}.btn-add:hover{background:var(--accent-primary-hover);box-shadow:0 6px 28px #60a5fa66;transform:translateY(-2px)}.btn-add:active{transform:translateY(0) scale(.97)}.filter-bar{display:flex;gap:8px;margin-bottom:20px;animation:fadeInUp .75s ease-out}.filter-btn{padding:8px 18px;background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-full);color:var(--text-secondary);font-family:var(--font-family);font-size:13px;font-weight:500;cursor:pointer;transition:all var(--transition-base);box-shadow:var(--shadow-sm)}.filter-btn:hover{border-color:var(--border-subtle);color:var(--text-primary);background:var(--bg-card-hover);box-shadow:var(--shadow-md)}.filter-btn.active{background:var(--accent-gradient-btn);color:#fff;border-color:transparent;box-shadow:0 3px 14px #60a5fa4d}.todo-list{display:flex;flex-direction:column;gap:10px}.todo-list-empty{text-align:center;padding:60px 20px;animation:fadeIn .4s ease-out}.todo-list-empty-icon{font-size:56px;margin-bottom:16px;opacity:.5}.todo-list-empty h3{color:var(--text-secondary);font-size:18px;font-weight:700;margin-bottom:8px}.todo-list-empty p{color:var(--text-muted);font-size:14px}.todo-item{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);padding:18px 20px;display:flex;align-items:center;gap:16px;transition:all var(--transition-base);animation:fadeInUp .4s ease-out backwards;cursor:default;box-shadow:var(--shadow-sm)}.todo-item:hover{border-color:var(--border-subtle);background:var(--bg-card-hover);box-shadow:var(--shadow-md);transform:translate(4px)}.todo-item.completed{opacity:.55}.todo-item.completed:hover{opacity:.75}.todo-checkbox{width:26px;height:26px;min-width:26px;border:2.5px solid var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-base)}.todo-checkbox:hover{border-color:var(--accent-primary);background:#60a5fa14}.todo-checkbox.checked{background:var(--accent-gradient-btn);border-color:var(--accent-primary)}.todo-checkbox.checked:after{content:"✓";color:#fff;font-size:15px;font-weight:800;animation:scaleIn .2s ease-out}.todo-content{flex:1;min-width:0}.todo-title{font-size:15px;font-weight:500;color:var(--text-primary);transition:all var(--transition-base)}.todo-item.completed .todo-title{text-decoration:line-through;color:var(--text-muted)}.todo-meta{display:flex;gap:10px;margin-top:6px}.todo-badge{font-size:11px;font-weight:700;padding:3px 10px;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em}.todo-badge.priority-high{background:#e74c3c1a;color:var(--accent-danger)}.todo-badge.priority-medium{background:#f39c121a;color:var(--accent-warning)}.todo-badge.priority-low{background:#27ae601a;color:var(--accent-success)}.todo-badge.status{background:#60a5fa1a;color:var(--accent-primary)}.todo-actions{display:flex;gap:6px;opacity:0;transition:opacity var(--transition-fast)}.todo-item:hover .todo-actions{opacity:1}.todo-action-btn{width:36px;height:36px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;transition:all var(--transition-fast)}.todo-action-btn:hover{background:#0000000a;color:var(--text-primary)}.todo-action-btn.delete:hover{background:#e74c3c14;color:var(--accent-danger)}@media (max-width: 640px){.auth-card{padding:36px 24px;margin:16px}.dashboard{padding:20px 16px 60px}.dashboard-header{flex-direction:column;align-items:flex-start;gap:16px}.stats-bar{grid-template-columns:repeat(3,1fr);gap:10px}.stat-card{padding:14px}.stat-number{font-size:24px}.add-todo-form{flex-direction:column}.btn-add{justify-content:center}.filter-bar{overflow-x:auto;padding-bottom:4px}.todo-actions{opacity:1}}