:root{--font-main: "Inter", system-ui, sans-serif;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 24px;--transition-fast: .2s ease;--transition-medium: .3s cubic-bezier(.4, 0, .2, 1)}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f3f4f6;--bg-tertiary: #e5e7eb;--text-primary: #111827;--text-secondary: #4b5563;--accent-color: #ef4444;--accent-hover: #dc2626;--border-color: #e5e7eb;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1)}[data-theme=dark]{--bg-primary: #111827;--bg-secondary: #1f2937;--bg-tertiary: #374151;--text-primary: #f9fafb;--text-secondary: #9ca3af;--accent-color: #f87171;--accent-hover: #ef4444;--border-color: #374151;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .5);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .5)}[data-theme=forest]{--bg-primary: #ecfdf5;--bg-secondary: #d1fae5;--bg-tertiary: #a7f3d0;--text-primary: #064e3b;--text-secondary: #047857;--accent-color: #059669;--accent-hover: #047857;--border-color: #6ee7b7;--shadow-sm: 0 1px 2px 0 rgb(6 95 70 / .1);--shadow-md: 0 4px 6px -1px rgb(6 95 70 / .15)}[data-mode=short-break]{--accent-color: #10b981;--accent-hover: #059669}[data-mode=long-break]{--accent-color: #3b82f6;--accent-hover: #2563eb}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-main);transition:background-color var(--transition-medium),color var(--transition-medium);margin:0;min-height:100vh}*,*:before,*:after{box-sizing:border-box}button{font-family:inherit}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.container{max-width:800px;margin:0 auto;padding:1rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:var(--radius-sm);font-weight:500;cursor:pointer;border:none;transition:all var(--transition-fast);background-color:var(--bg-secondary);color:var(--text-primary)}.btn:hover{background-color:var(--bg-tertiary)}.btn-primary{background-color:var(--accent-color);color:#fff}.btn-primary:hover{background-color:var(--accent-hover)}.card{background-color:var(--bg-secondary);border-radius:var(--radius-md);padding:1.5rem;box-shadow:var(--shadow-sm)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-container{min-height:100vh;display:flex;flex-direction:column;transition:background-color var(--transition-medium)}.app-header{padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}.app-header h1{font-size:1.5rem;font-weight:700;margin:0}.settings-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;opacity:.7;transition:opacity .2s}.settings-btn:hover{opacity:1}.app-footer{text-align:center;padding:2rem;opacity:.6;font-size:.9rem;margin-top:auto}.toast-container{position:fixed;bottom:2rem;right:2rem;display:flex;flex-direction:column;gap:.5rem;z-index:2000;pointer-events:none}.toast{background:var(--bg-secondary);color:var(--text-primary);padding:1rem 1.5rem;border-radius:var(--radius-sm);box-shadow:var(--shadow-md);border-left:4px solid var(--accent-color);pointer-events:auto;min-width:250px;max-width:400px;animation:slideIn .3s cubic-bezier(.16,1,.3,1) forwards;opacity:0;transform:translateY(20px)}.toast-success{border-left-color:#10b981}.toast-warning{border-left-color:#f59e0b}.toast-info{border-left-color:#3b82f6}@keyframes slideIn{to{opacity:1;transform:translateY(0)}}@media(prefers-reduced-motion:reduce){.toast{animation:fadeIn .3s ease forwards;transform:none}@keyframes fadeIn{to{opacity:1}}}.timer-display{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 1rem;border-radius:var(--radius-lg);background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow-md);transition:all var(--transition-medium);border:1px solid var(--border-color);margin-bottom:2rem}.timer-time{font-size:6rem;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-2px;color:var(--text-primary);text-shadow:0 2px 10px rgba(0,0,0,.1)}.timer-status{margin-top:1rem;font-size:1.25rem;font-weight:500;text-transform:uppercase;letter-spacing:2px;color:var(--text-secondary);opacity:.8}.timer-display[data-mode=focus] .timer-status,.timer-display[data-mode=short-break] .timer-status,.timer-display[data-mode=long-break] .timer-status{color:var(--accent-color)}.timer-controls{display:flex;gap:1rem;justify-content:center}.timer-controls .btn{min-width:100px;padding:.75rem 1.5rem;font-size:1.1rem}.task-item{display:flex;align-items:center;justify-content:space-between;padding:1rem;background:var(--bg-primary);border-radius:var(--radius-sm);margin-bottom:.5rem;box-shadow:var(--shadow-sm);transition:all var(--transition-medium);border-left:4px solid transparent}.task-item.active{border-left-color:var(--accent-color);background:var(--bg-secondary)}.task-item.completed{opacity:.6}.task-item.completed .task-title{text-decoration:line-through}.task-left{display:flex;align-items:center;gap:1rem;flex:1}.check-btn{width:24px;height:24px;border-radius:50%;border:2px solid var(--text-secondary);background:transparent;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--bg-primary);font-size:14px;transition:all var(--transition-fast)}.check-btn.checked{background:var(--accent-color);border-color:var(--accent-color)}.task-title{font-weight:500}.task-right{display:flex;align-items:center;gap:1rem}.pomodoro-count{font-weight:600;color:var(--text-secondary)}.est{font-size:.9em;opacity:.7}.btn-icon{background:none;border:none;cursor:pointer;font-size:1.2rem;color:var(--text-secondary);padding:4px;border-radius:4px}.btn-icon:hover{background:var(--bg-tertiary);color:var(--text-primary)}.delete-btn:hover{color:var(--accent-color)}.task-list-container{max-width:600px;margin:0 auto;margin-top:2rem}.task-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;color:var(--text-primary)}.current-task-banner{background:#ffffff1a;padding:1rem;border-radius:var(--radius-sm);margin-bottom:1rem;text-align:center;border:1px solid var(--accent-color);color:var(--text-primary)}.add-task-btn{width:100%;padding:1rem;border:2px dashed var(--bg-tertiary);background:#0000000d;border-radius:var(--radius-sm);font-weight:600;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem;transition:all var(--transition-fast)}.add-task-btn:hover{background:#0000001a;border-color:var(--accent-color);color:var(--accent-color)}.add-task-form{background:var(--bg-secondary);padding:1.5rem;border-radius:var(--radius-sm);animation:slideDown .2s ease-out}.task-input{width:100%;padding:.75rem;font-size:1.2rem;border:none;border-bottom:2px solid var(--bg-tertiary);background:transparent;color:var(--text-primary);margin-bottom:1rem}.task-input:focus{outline:none}.form-footer{display:flex;justify-content:space-between;align-items:center;margin-top:1rem}.est-control{font-weight:600;display:flex;align-items:center;gap:.5rem}.est-control input{width:60px;padding:.5rem;border-radius:var(--radius-sm);border:1px solid var(--bg-tertiary);background:var(--bg-primary);color:var(--text-primary)}.form-actions{display:flex;gap:.5rem}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:var(--bg-primary);border-radius:var(--radius-md);width:90%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-md);color:var(--text-primary);animation:popIn .2s cubic-bezier(.16,1,.3,1)}.modal-header{padding:1.5rem;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.modal-header h2{margin:0;font-size:1.25rem}.close-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-secondary)}.modal-body{padding:1.5rem}.modal-body section{margin-bottom:2rem}.modal-body h3{font-size:.9rem;text-transform:uppercase;color:var(--text-secondary);margin-bottom:1rem;letter-spacing:1px}.input-group-row{display:flex;gap:1rem}.input-group-row label{flex:1;display:flex;flex-direction:column;gap:.5rem;font-size:.9rem}.input-group-row input{padding:.5rem;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-secondary);color:var(--text-primary)}.theme-options{display:flex;gap:1rem}.theme-btn{flex:1;padding:1rem;border:2px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;background:var(--bg-secondary);color:var(--text-primary)}.theme-btn.active{border-color:var(--accent-color);background:var(--bg-tertiary)}.checkbox-label{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem;cursor:pointer}.modal-footer{padding:1rem 1.5rem;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:1rem;background:var(--bg-secondary);border-radius:0 0 var(--radius-md) var(--radius-md)}@keyframes popIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}