:root{--bg-dark: #0a0e17;--bg-gradient-dark: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(120, 119, 198, .15), transparent 50%), radial-gradient(ellipse 60% 80% at 110% 50%, rgba(79, 70, 229, .12), transparent 50%), linear-gradient(180deg, #0a0e17 0%, #0d1117 50%, #0a0e17 100%);--card-dark: rgba(255, 255, 255, .05);--card-hover-dark: rgba(255, 255, 255, .09);--card-border-dark: rgba(255, 255, 255, .1);--text-dark: #e8ecf4;--muted-dark: #8b92a8;--input-dark: rgba(255, 255, 255, .07);--bg-light: #f8fafc;--bg-gradient-light: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, .08), transparent 50%), radial-gradient(ellipse 60% 80% at 110% 50%, rgba(168, 85, 247, .06), transparent 50%), linear-gradient(180deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);--card-light: rgba(255, 255, 255, .85);--card-hover-light: rgba(255, 255, 255, .98);--card-border-light: rgba(0, 0, 0, .08);--text-light: #1e293b;--muted-light: #64748b;--input-light: rgba(255, 255, 255, .95);--primary: #6366f1;--primary-hover: #4f46e5;--primary-light: rgba(99, 102, 241, .12);--secondary: #8b5cf6;--danger: #ef4444;--danger-light: rgba(239, 68, 68, .12);--success: #10b981;--success-light: rgba(16, 185, 129, .12);--warning: #f59e0b;--warning-light: rgba(245, 158, 11, .12);--cat-progetti: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--cat-scuola: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);--cat-generale: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);--shadow-sm: 0 2px 4px rgba(0, 0, 0, .05);--shadow-md: 0 6px 12px -2px rgba(0, 0, 0, .12);--shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, .15);--shadow-xl: 0 24px 48px -8px rgba(0, 0, 0, .18);--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)}:root[data-theme=light]{--bg: var(--bg-light);--bg-gradient: var(--bg-gradient-light);--card: var(--card-light);--card-hover: var(--card-hover-light);--card-border: var(--card-border-light);--text: var(--text-light);--muted: var(--muted-light);--input: var(--input-light)}:root{--bg: var(--bg-dark);--bg-gradient: var(--bg-gradient-dark);--card: var(--card-dark);--card-hover: var(--card-hover-dark);--card-border: var(--card-border-dark);--text: var(--text-dark);--muted: var(--muted-dark);--input: var(--input-dark)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);background-image:var(--bg-gradient);background-attachment:fixed;color:var(--text);min-height:100vh;line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{min-height:100vh;display:flex;flex-direction:column}.app__header{padding:1.25rem 2rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--card-border);-webkit-backdrop-filter:blur(24px) saturate(180%);backdrop-filter:blur(24px) saturate(180%);background:#ffffff08;position:sticky;top:0;z-index:100;box-shadow:0 4px 12px #0000000d}.app__title{font-size:1.625rem;font-weight:700;background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em;display:flex;align-items:center;gap:.5rem}.user-info{display:flex;align-items:center;gap:.875rem;color:var(--muted);font-size:.9rem;padding:.5rem 1rem;background:var(--card);border-radius:2rem;border:1px solid var(--card-border);transition:var(--transition-base)}.user-info:hover{background:var(--card-hover);border-color:var(--primary-light)}.user-info img{width:36px;height:36px;border-radius:50%;border:2px solid var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.app__main{flex:1;padding:2.5rem 2rem;max-width:1400px;width:100%;margin:0 auto}.card{background:var(--card);border:1px solid var(--card-border);border-radius:1.5rem;-webkit-backdrop-filter:blur(24px) saturate(180%);backdrop-filter:blur(24px) saturate(180%);padding:2rem;box-shadow:var(--shadow-lg);transition:var(--transition-base);animation:fadeInUp .6s cubic-bezier(.16,1,.3,1);position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:var(--transition-base)}.card:hover{box-shadow:var(--shadow-xl);border-color:var(--primary-light);transform:translateY(-2px)}.card:hover:before{opacity:1}@keyframes fadeInUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}.form{display:flex;flex-direction:column;gap:1.25rem}.row{display:flex;gap:.875rem;flex-wrap:wrap}input[type=text],input[type=email],input[type=password],input[type=datetime-local]{flex:1;min-width:200px;padding:.875rem 1.25rem;border:1px solid var(--card-border);border-radius:.875rem;background:var(--input);color:var(--text);font-size:.9375rem;transition:var(--transition-base);font-family:inherit}input:focus{outline:none;border-color:var(--primary);background:var(--card-hover);box-shadow:0 0 0 4px var(--primary-light);transform:translateY(-1px)}input::placeholder{color:var(--muted);opacity:.6}.btn{padding:.875rem 1.75rem;border:none;border-radius:.875rem;background:var(--card);color:var(--text);font-size:.9375rem;font-weight:600;cursor:pointer;transition:var(--transition-base);font-family:inherit;border:1px solid var(--card-border);position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;white-space:nowrap}.btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#ffffff26;transform:translate(-50%,-50%);transition:width .6s,height .6s}.btn:active:before{width:300px;height:300px}.btn:hover{background:var(--card-hover);transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}.btn:active{transform:translateY(0)}.btn.primary{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-hover) 100%);color:#fff;border-color:transparent;font-weight:600;box-shadow:0 4px 12px #6366f14d}.btn.primary:hover{box-shadow:0 8px 20px #6366f166;transform:translateY(-3px)}.btn.danger{background:linear-gradient(135deg,var(--danger) 0%,#dc2626 100%);color:#fff;border-color:transparent;box-shadow:0 4px 12px #ef44444d}.btn.danger:hover{box-shadow:0 8px 20px #ef444466}.btn.google{background:#fff;color:#1f2937;font-weight:600;border:1px solid #e5e7eb;box-shadow:var(--shadow-sm)}.btn.google:hover{background:#f9fafb;box-shadow:var(--shadow-md)}.btn-secondary{background:var(--card);color:var(--text);border:1px solid var(--card-border)}.btn-secondary:hover{background:var(--card-hover)}.icon-btn{width:44px;height:44px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:var(--transition-base)}.icon-btn:hover{transform:rotate(15deg) scale(1.05)}.theme-icon{font-size:1.25rem}.divider{display:flex;align-items:center;gap:1rem;margin:1.75rem 0;color:var(--muted);font-size:.875rem;font-weight:500}.divider:before,.divider:after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,var(--card-border),transparent)}.todo__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding:2rem;background:linear-gradient(135deg,var(--primary-light) 0%,rgba(139,92,246,.08) 100%);border-radius:1.25rem;border:1px solid var(--card-border);position:relative;overflow:hidden}.todo__header:before{content:"";position:absolute;top:-50%;right:-20%;width:300px;height:300px;background:radial-gradient(circle,var(--primary-light) 0%,transparent 70%);opacity:.3;pointer-events:none}.todo__header h2{font-size:1.875rem;font-weight:700;background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em;position:relative}.header__actions{display:flex;gap:.875rem;align-items:center}.cards-container{display:grid;gap:1.75rem}.card--main{grid-column:1 / -1}.card__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.75rem;padding-bottom:1.25rem;border-bottom:1px solid var(--card-border)}.card__header h3{font-size:1.375rem;font-weight:600;letter-spacing:-.01em}.card__count{display:inline-flex;align-items:center;justify-content:center;min-width:32px;height:32px;padding:0 .625rem;background:var(--primary-light);color:var(--primary);border-radius:1rem;font-size:.875rem;font-weight:700;box-shadow:0 2px 6px #6366f126}.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.75rem}.todo__controls{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.todo__controls label{color:var(--muted);font-size:.875rem;font-weight:600}.todo__controls select{padding:.625rem 1.25rem;border:1px solid var(--card-border);border-radius:.75rem;background:var(--input);color:var(--text);cursor:pointer;font-family:inherit;font-weight:500;transition:var(--transition-base)}.todo__controls select:hover{background:var(--card-hover);border-color:var(--primary);box-shadow:var(--shadow-sm)}.todo__controls select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-light)}.todo__add-section{margin-bottom:2rem}.todo__list{list-style:none;display:flex;flex-direction:column;gap:1rem}.todo__item{display:flex;align-items:flex-start;gap:1rem;padding:1.25rem;border:1px solid var(--card-border);border-radius:1rem;background:var(--card);transition:var(--transition-base);animation:slideIn .4s cubic-bezier(.16,1,.3,1);position:relative}.todo__item:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:1rem 0 0 1rem;opacity:0;transition:var(--transition-base)}.todo__item:hover:before{opacity:1}@keyframes slideIn{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}.todo__item:hover{background:var(--card-hover);transform:translate(4px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}.todo__item.completed{opacity:.65;background:var(--card)}.todo__checkbox{width:22px;height:22px;min-width:22px;cursor:pointer;accent-color:var(--primary);margin-top:.125rem}.todo__content{flex:1;cursor:pointer;min-width:0}.todo__title{font-weight:600;color:var(--text);margin-bottom:.375rem;word-wrap:break-word;font-size:1rem;line-height:1.5}.todo__title.done{text-decoration:line-through;opacity:.6}.todo__description{font-size:.875rem;color:var(--muted);margin-bottom:.625rem;line-height:1.5}.todo__meta{display:flex;flex-wrap:wrap;gap:.625rem;align-items:center}.todo__priority{display:inline-flex;align-items:center;font-size:.75rem;padding:.375rem .75rem;border-radius:.625rem;font-weight:600;text-transform:uppercase;letter-spacing:.02em}.todo__priority.alta{background:var(--danger-light);color:var(--danger);border:1px solid rgba(239,68,68,.2)}.todo__priority.media{background:var(--warning-light);color:var(--warning);border:1px solid rgba(245,158,11,.2)}.todo__priority.bassa{background:var(--success-light);color:var(--success);border:1px solid rgba(16,185,129,.2)}.todo__category{display:inline-flex;align-items:center;padding:.375rem .75rem;border-radius:.625rem;font-size:.75rem;font-weight:600;color:#fff;text-transform:uppercase;letter-spacing:.03em}.todo__category.progetti{background:var(--cat-progetti);box-shadow:0 2px 8px #667eea4d}.todo__category.scuola{background:var(--cat-scuola);box-shadow:0 2px 8px #f093fb4d}.todo__category.generale{background:var(--cat-generale);box-shadow:0 2px 8px #4facfe4d}.todo__actions{display:flex;gap:.375rem;opacity:0;transition:var(--transition-base);margin-left:auto}.todo__item:hover .todo__actions{opacity:1}.todo__complete,.todo__delete,.todo__edit{width:36px;height:36px;min-width:36px;border:none;border-radius:.625rem;background:var(--card);color:var(--muted);cursor:pointer;transition:var(--transition-base);display:flex;align-items:center;justify-content:center;font-size:1rem;border:1px solid var(--card-border)}.todo__complete:hover{background:var(--success);color:#fff;transform:scale(1.1);box-shadow:0 4px 12px #10b9814d;border-color:transparent}.todo__delete:hover{background:var(--danger);color:#fff;transform:scale(1.1);box-shadow:0 4px 12px #ef44444d;border-color:transparent}.todo__edit:hover{background:var(--primary);color:#fff;transform:scale(1.1);box-shadow:0 4px 12px #6366f14d;border-color:transparent}.banner{background:var(--danger-light);border:1px solid rgba(239,68,68,.3);border-radius:1rem;padding:1.25rem 1.5rem;margin-top:2rem;animation:shake .5s ease}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}.banner strong{color:var(--danger);font-weight:700}.app__footer{padding:2rem;text-align:center;color:var(--muted);font-size:.875rem;border-top:1px solid var(--card-border);background:#ffffff05;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000bf;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;visibility:hidden;transition:var(--transition-slow)}.overlay.active{opacity:1;visibility:visible}.overlay__content{background:var(--card);border:1px solid var(--card-border);border-radius:1.5rem;padding:2.5rem;width:90%;max-width:540px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-xl);transform:scale(.9) translateY(40px);transition:var(--transition-slow)}.overlay.active .overlay__content{transform:scale(1) translateY(0)}.overlay__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:2rem}.overlay__title{font-size:1.5rem;font-weight:700;color:var(--text);letter-spacing:-.02em}.overlay__close{background:none;border:none;font-size:1.5rem;color:var(--muted);cursor:pointer;padding:.5rem;border-radius:.625rem;transition:var(--transition-base);line-height:1}.overlay__close:hover{background:var(--card-hover);color:var(--danger);transform:rotate(90deg)}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.625rem;font-weight:600;color:var(--text);font-size:.875rem}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.875rem 1.25rem;border:1px solid var(--card-border);border-radius:.875rem;background:var(--input);color:var(--text);font-size:.9375rem;transition:var(--transition-base);font-family:inherit;resize:vertical}.form-group textarea{min-height:120px;line-height:1.6}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);background:var(--card-hover);box-shadow:0 0 0 4px var(--primary-light)}.form-text{display:block;margin-top:.625rem;font-size:.8125rem;color:var(--muted)}.priority-options{display:flex;gap:.875rem;flex-wrap:wrap}.priority-option{flex:1;min-width:120px;padding:.875rem 1rem;border:2px solid var(--card-border);border-radius:.875rem;background:var(--input);color:var(--text);text-align:center;cursor:pointer;transition:var(--transition-base);font-size:.9375rem;font-weight:600}.priority-option:hover{background:var(--card-hover);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.priority-option.selected{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 4px 12px #6366f14d}.priority-option.alta{border-color:var(--danger)}.priority-option.alta.selected{background:var(--danger);border-color:var(--danger);box-shadow:0 4px 12px #ef44444d}.priority-option.media{border-color:var(--warning)}.priority-option.media.selected{background:var(--warning);border-color:var(--warning);box-shadow:0 4px 12px #f59e0b4d}.priority-option.bassa{border-color:var(--success)}.priority-option.bassa.selected{background:var(--success);border-color:var(--success);box-shadow:0 4px 12px #10b9814d}.overlay__actions{display:flex;gap:.875rem;justify-content:flex-end;margin-top:2.5rem;padding-top:2rem;border-top:1px solid var(--card-border)}.task-detail{padding:.5rem 0}.task-detail__header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:2rem;gap:1.25rem}.task-detail__title{font-size:1.5rem;font-weight:700;color:var(--text);margin:0;flex:1;line-height:1.4;letter-spacing:-.02em}.task-detail__title.completed{text-decoration:line-through;opacity:.7}.task-detail__status .status{padding:.375rem .875rem;border-radius:1rem;font-size:.8125rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em}.task-detail__status .status.completed{background:var(--success);color:#fff;box-shadow:0 2px 8px #10b9814d}.task-detail__status .status.active{background:var(--primary);color:#fff;box-shadow:0 2px 8px #6366f14d}.task-detail__section{margin-bottom:2rem;padding:1.5rem;background:var(--input);border-radius:1rem;border:1px solid var(--card-border)}.task-detail__section h4{font-size:1rem;font-weight:600;color:var(--text);margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}.task-detail__description{color:var(--muted);line-height:1.7;white-space:pre-wrap;word-wrap:break-word}.task-detail__meta{margin-bottom:2rem}.task-detail__info{display:flex;flex-direction:column;gap:1rem}.info-item{display:flex;align-items:center;gap:.75rem;font-size:.9375rem;padding:.75rem;background:var(--input);border-radius:.75rem;border:1px solid var(--card-border);transition:var(--transition-base)}.info-item:hover{background:var(--card-hover);border-color:var(--primary-light)}.info-item strong{color:var(--text);min-width:110px;font-weight:600}.task-detail__actions{display:flex;gap:.875rem;flex-wrap:wrap}.task-detail__actions .btn{flex:1;min-width:140px}.hidden{display:none!important}.muted{color:var(--muted);font-size:.875rem}.link{background:transparent;border:none;color:var(--primary);cursor:pointer;text-decoration:underline;text-underline-offset:3px;padding:0;font-family:inherit;transition:var(--transition-base);font-weight:500}.link:hover{color:var(--primary-hover);text-decoration-thickness:2px}.loading{display:inline-block;width:22px;height:22px;border:3px solid var(--card-border);border-radius:50%;border-top-color:var(--primary);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--card);border-radius:10px}::-webkit-scrollbar-thumb{background:var(--card-border);border-radius:10px;transition:var(--transition-base)}::-webkit-scrollbar-thumb:hover{background:var(--primary)}@media (max-width: 768px){.app__header{padding:1rem 1.25rem}.app__title{font-size:1.375rem}.app__main{padding:1.5rem 1rem}.card{padding:1.5rem;border-radius:1.25rem}.todo__header{flex-direction:column;gap:1.25rem;text-align:center;padding:1.5rem}.todo__header h2{font-size:1.5rem}.header__actions{width:100%;justify-content:center}.row{flex-direction:column}.row>*{width:100%}.cards-grid{grid-template-columns:1fr}.todo__controls{flex-direction:column;align-items:stretch}.todo__controls select{width:100%}.todo__item{padding:1rem;flex-wrap:wrap}.todo__actions{opacity:1;width:100%;justify-content:flex-end;margin-top:.5rem}.priority-options{flex-direction:column}.priority-option{min-width:100%}.overlay__content{padding:1.75rem;max-width:95%;border-radius:1.25rem}.overlay__title{font-size:1.25rem}.overlay__actions{flex-direction:column}.overlay__actions .btn{width:100%}.task-detail__actions{flex-direction:column}.task-detail__actions .btn{width:100%;min-width:100%}.user-info{padding:.375rem .75rem;font-size:.8125rem}.user-info img{width:32px;height:32px}}@media (max-width: 480px){.app__header{padding:.875rem 1rem}.app__title{font-size:1.25rem}.app__main{padding:1rem .75rem}.card,.todo__header{padding:1.25rem}.todo__item{padding:.875rem}.btn{padding:.75rem 1.25rem;font-size:.875rem}.icon-btn{width:40px;height:40px}}@media print{body{background:#fff;color:#000}.app__header,.app__footer,.header__actions,.todo__actions,.btn,.overlay{display:none!important}.card{box-shadow:none;border:1px solid #ddd;page-break-inside:avoid}.todo__item{page-break-inside:avoid}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:.5rem}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{box-shadow:0 0 0 4px var(--primary-light)}@media (prefers-contrast: high){:root{--card-border: rgba(255, 255, 255, .3)}.card,.btn{border-width:2px}}