.habit-app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(135deg,var(--bg-primary) 0%,var(--bg-secondary) 100%);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 1px 3px #0000001a}.header-content{max-width:1200px;margin:0 auto;padding:var(--space-4) var(--space-6);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:var(--space-6);min-height:80px}.header-left{display:flex;align-items:center;justify-self:start}.header-center{display:flex;align-items:center;justify-self:center}.header-right{display:flex;align-items:center;justify-self:end;gap:var(--space-4)}.theme-toggle-wrapper{display:flex;align-items:center}.add-habit-header{background:linear-gradient(135deg,var(--success),var(--success-hover));border:none;color:#fff;padding:var(--space-3) 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p{font-size:var(--text-lg);color:var(--text-secondary);margin-bottom:var(--space-6)}.app-footer{background-color:var(--bg-secondary);border-top:1px solid var(--border);padding:var(--space-4) var(--space-6)}.footer-content{max-width:1200px;margin:0 auto;text-align:center}.footer-content p{margin:0;color:var(--text-secondary);font-size:var(--text-sm)}.footer-link{color:var(--primary);text-decoration:none;margin-left:var(--space-2)}.footer-link:hover{text-decoration:underline}@media (max-width: 768px){.header-content{grid-template-columns:1fr;grid-template-rows:auto auto auto;gap:var(--space-3);text-align:center;padding:var(--space-3) var(--space-4)}.header-left,.header-center,.header-right{justify-self:center}.header-right{flex-direction:column;gap:var(--space-3)}.header-controls{gap:var(--space-2)}.add-habit-header span{display:none}.add-habit-header{padding:var(--space-3);width:48px;height:48px;justify-content:center}.app-main{padding:var(--space-4)}}@media (max-width: 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var(--border);border-radius:var(--radius-lg);overflow:hidden;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.calendar-day-modern:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:transparent;transition:all .3s ease}.calendar-day-modern:hover{background:var(--bg-secondary);transform:translateY(-3px);box-shadow:0 10px 40px #0000001a;border-color:var(--border-hover)}.calendar-day-modern:hover:before{background:var(--gradient-primary)}.calendar-day-modern:focus{background:var(--bg-secondary);border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #3b82f626,0 10px 40px #0000001a}.calendar-day-modern.other-month{background:var(--bg-quaternary);color:var(--text-tertiary);opacity:.6}.calendar-day-modern.today{background:linear-gradient(135deg,rgba(59,130,246,.12),rgba(16,185,129,.08));border-color:var(--primary);border-width:3px;position:relative;box-shadow:0 8px 25px 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ease-in-out;border-color:var(--success)!important}.calendar-day-modern.celebrating-habit-complete{animation:habitComplete 1s ease-out}@keyframes perfectDayPulse{0%{transform:scale(1);box-shadow:0 8px 25px #10b98133}25%{transform:scale(1.02);box-shadow:0 12px 35px #10b9814d}50%{transform:scale(1.05);box-shadow:0 16px 45px #10b98166}75%{transform:scale(1.02);box-shadow:0 12px 35px #10b9814d}to{transform:scale(1);box-shadow:0 8px 25px #10b98133}}@keyframes habitComplete{0%{transform:scale(1)}30%{transform:scale(1.03)}60%{transform:scale(1.01)}to{transform:scale(1)}}.today-indicator-modern{position:absolute;bottom:var(--space-2);left:var(--space-2);font-size:10px;color:var(--primary);font-weight:700;display:flex;align-items:center;gap:4px;background:linear-gradient(135deg,rgba(59,130,246,.15),rgba(59,130,246,.05));padding:4px 8px;border-radius:8px;border:1px solid rgba(59,130,246,.3);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);box-shadow:0 2px 8px #3b82f626}.today-pulse{animation:todayPulse 2s infinite;filter:drop-shadow(0 0 2px rgba(59,130,246,.5))}@keyframes todayPulse{0%,to{opacity:.8;transform:scale(1)}50%{opacity:1;transform:scale(1.1)}}.completion-visualization{position:absolute;bottom:0;left:0;right:0;height:4px;background:rgba(0,0,0,.05);overflow:hidden}.completion-bar-modern{height:100%;background:var(--gradient-primary);transition:width .6s cubic-bezier(.4,0,.2,1);position:relative}.completion-bar-modern:after{content:"";position:absolute;top:0;left:-50%;width:50%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:progressShimmer 2s infinite}@keyframes progressShimmer{0%{left:-50%}to{left:100%}}.calendar-day-modern.fully-completed .completion-bar-modern{background:var(--gradient-success)}.calendar-day-modern.mostly-completed .completion-bar-modern{background:var(--gradient-primary)}.calendar-day-modern.partially-completed 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scale(1.1)}to{opacity:0;transform:translateY(-25px) scale(.8)}}.day-header-modern{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:var(--space-2);position:relative}.day-number-modern{font-size:var(--text-lg);font-weight:var(--font-bold);color:var(--text-primary);line-height:1}.completion-summary-modern{font-size:var(--text-xs);color:var(--text-secondary);background:var(--bg-secondary);padding:var(--space-1) var(--space-2);border-radius:var(--radius);border:1px solid var(--border)}.streak-badge{position:absolute;top:-8px;right:-8px;background:var(--gradient-celebrate);color:#fff;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;font-size:var(--text-xs);font-weight:var(--font-bold);box-shadow:var(--shadow-md);animation:streakPulse 2s infinite;z-index:2}@keyframes 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#e0e7ff;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #e2e8f0;--bg-quaternary: #f1f5f9;--bg-success: #ecfdf5;--bg-energy: #fffbeb;--bg-celebrate: #faf5ff;--text-primary: #1f2937;--text-secondary: #6b7280;--text-tertiary: #9ca3af;--text-inverse: #ffffff;--text-success: #047857;--text-energy: #92400e;--border: #e5e7eb;--border-hover: #d1d5db;--border-focus: #3b82f6;--border-success: #10b981;--border-energy: #f59e0b;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow: 0 1px 3px rgba(0, 0, 0, .1), 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07), 0 2px 4px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1), 0 4px 6px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .1), 0 10px 10px rgba(0, 0, 0, .04);--shadow-2xl: 0 25px 50px rgba(0, 0, 0, .25);--gradient-success: linear-gradient(135deg, #10b981, #047857);--gradient-energy: linear-gradient(135deg, #f59e0b, #d97706);--gradient-primary: linear-gradient(135deg, #3b82f6, #1d4ed8);--gradient-celebrate: linear-gradient(135deg, #8b5cf6, #7c3aed);--gradient-hero: linear-gradient(135deg, #f0f9ff 0%, #ecfdf5 50%, #fef3c7 100%);--transition-fast: .15s ease;--transition: .2s ease;--transition-slow: .3s ease;--shadow-xl: 0 20px 25px rgba(0, 0, 0, .1);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--radius-sm: .125rem;--radius: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: .75rem;--radius-2xl: 1rem;--radius-full: 9999px;--font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;--font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--transition: all .2s ease;--transition-fast: all .15s ease;--transition-slow: all .3s ease;--z-dropdown: 1000;--z-modal: 1500;--z-notification: 2000}[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--bg-quaternary: #475569;--bg-success: #064e3b;--bg-energy: #451a03;--bg-celebrate: #4c1d95;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-tertiary: #94a3b8;--text-inverse: #0f172a;--text-success: #34d399;--text-energy: #fbbf24;--border: #475569;--border-hover: #64748b;--border-success: #059669;--border-energy: #d97706;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);--shadow: 0 1px 3px rgba(0, 0, 0, .6), 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 6px rgba(0, 0, 0, .6), 0 2px 4px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .6), 0 4px 6px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .7), 0 10px 10px rgba(0, 0, 0, .5);--shadow-2xl: 0 25px 50px rgba(0, 0, 0, .8);--gradient-success: linear-gradient(135deg, #059669, #047857);--gradient-energy: linear-gradient(135deg, #d97706, #b45309);--gradient-primary: linear-gradient(135deg, #2563eb, #1d4ed8);--gradient-celebrate: linear-gradient(135deg, #7c3aed, #6d28d9);--gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #374151 100%)}body{font-family:var(--font-sans);font-size:var(--text-base);font-weight:var(--font-normal);color:var(--text-primary);background-color:var(--bg-primary);transition:var(--transition)}h1,h2,h3,h4,h5,h6{font-weight:var(--font-semibold);line-height:1.25;margin-bottom:var(--space-2)}h1{font-size:var(--text-3xl)}h2{font-size:var(--text-2xl)}h3{font-size:var(--text-xl)}h4{font-size:var(--text-lg)}h5{font-size:var(--text-base)}h6{font-size:var(--text-sm)}p{margin-bottom:var(--space-4);color:var(--text-secondary)}a{color:var(--primary);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary-hover);text-decoration:underline}*:focus{outline:2px 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p{color:var(--text-secondary);font-size:var(--text-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);border:2px solid transparent;border-radius:var(--radius-lg);font-size:var(--text-sm);font-weight:var(--font-semibold);line-height:1.5;text-decoration:none;cursor:pointer;transition:var(--transition);white-space:nowrap;-webkit-user-select:none;user-select:none;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.btn:hover:before{left:100%}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.btn:disabled:before{display:none}.btn-primary{background:var(--gradient-primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 14px #3b82f640}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #3b82f659;background:linear-gradient(135deg,#2563eb,#1e40af)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--border);box-shadow:var(--shadow-sm)}.btn-secondary:hover:not(:disabled){background:var(--bg-tertiary);border-color:var(--border-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-success{background:var(--gradient-success);color:#fff;border-color:var(--success);box-shadow:0 4px 14px #10b98140}.btn-success:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #10b98159;background:linear-gradient(135deg,#059669,#065f46)}.btn-energy{background:var(--gradient-energy);color:#fff;border-color:var(--energy);box-shadow:0 4px 14px #f59e0b40}.btn-energy:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #f59e0b59}.btn-celebrate{background:var(--gradient-celebrate);color:#fff;border-color:var(--celebrate);box-shadow:0 4px 14px #8b5cf640}.btn-celebrate:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #8b5cf659}.btn-danger{background:linear-gradient(135deg,var(--danger),var(--danger-dark));color:#fff;border-color:var(--danger);box-shadow:0 4px 14px #ef444440}.btn-danger:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #ef444459}.btn-ghost{background-color:transparent;color:var(--text-primary);border-color:transparent}.btn-ghost:hover:not(:disabled){background-color:var(--bg-secondary);transform:translateY(-1px)}.btn-icon{padding:var(--space-2);border:none;background:transparent;color:var(--text-secondary);border-radius:var(--radius);cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;justify-content:center}.btn-icon:hover:not(:disabled){color:var(--text-primary);background-color:var(--bg-secondary)}.btn-icon.danger:hover:not(:disabled){color:var(--danger);background-color:var(--danger-light)}.btn-small{padding:var(--space-1) var(--space-3);font-size:var(--text-xs)}.btn-large{padding:var(--space-3) var(--space-6);font-size:var(--text-lg)}.form-group{margin-bottom:var(--space-4)}.form-group label{display:block;font-size:var(--text-sm);font-weight:var(--font-medium);color:var(--text-primary);margin-bottom:var(--space-2)}.required{color:var(--danger)}input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=month],input[type=color],textarea,select{width:100%;padding:var(--space-3);border:1px solid var(--border);border-radius:var(--radius-md);font-size:var(--text-sm);background-color:var(--bg-primary);color:var(--text-primary);transition:var(--transition)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 3px #3b82f61a}input.error,textarea.error,select.error{border-color:var(--danger)}input:disabled,textarea:disabled,select:disabled{background-color:var(--bg-tertiary);color:var(--text-tertiary);cursor:not-allowed}textarea{resize:vertical;min-height:80px}.char-count{font-size:var(--text-xs);color:var(--text-tertiary);text-align:right;margin-top:var(--space-1)}.field-error{color:var(--danger);font-size:var(--text-xs);margin-top:var(--space-1)}.error-message{padding:var(--space-3);background-color:var(--danger-light);color:var(--danger);border:1px solid var(--danger);border-radius:var(--radius-md);font-size:var(--text-sm);margin-bottom:var(--space-4)}.checkbox-label,.radio-label{display:flex;align-items:center;gap:var(--space-2);cursor:pointer;margin-bottom:var(--space-2);font-size:var(--text-sm)}.checkbox-label input[type=checkbox],.radio-label input[type=radio]{width:auto;margin:0}.card{background-color:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-6);box-shadow:var(--shadow);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-md)}.card-header{margin-bottom:var(--space-4);padding-bottom:var(--space-4);border-bottom:1px solid var(--border)}.card-title{font-size:var(--text-lg);font-weight:var(--font-semibold);margin-bottom:var(--space-2)}.card-description{color:var(--text-secondary);font-size:var(--text-sm)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);padding:var(--space-4)}.modal-content{background-color:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);max-width:90vw;max-height:90vh;overflow:hidden;display:flex;flex-direction:column}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-6);border-bottom:1px solid var(--border)}.modal-header h2{margin:0;font-size:var(--text-xl)}.modal-body{padding:var(--space-6);overflow-y:auto;flex:1}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-3);padding:var(--space-6);border-top:1px solid var(--border)}.notification{position:fixed;top:var(--space-4);right:var(--space-4);background-color:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-4);box-shadow:var(--shadow-lg);z-index:var(--z-notification);display:flex;align-items:center;gap:var(--space-3);max-width:400px;animation:slideIn .3s ease}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.notification.success{border-color:var(--success);background-color:var(--success-light);color:var(--success)}.notification.error{border-color:var(--danger);background-color:var(--danger-light);color:var(--danger)}.notification.warning{border-color:var(--warning);background-color:var(--warning-light);color:var(--warning)}.notification.info{border-color:var(--info);background-color:var(--info-light);color:var(--info)}.notification-content{display:flex;align-items:center;gap:var(--space-2);flex:1}.notification-close{background:none;border:none;color:inherit;cursor:pointer;font-size:var(--text-lg);padding:var(--space-1);border-radius:var(--radius)}.notification-close:hover{background-color:#0000001a}@media (max-width: 640px){:root{--space-4: .75rem;--space-6: 1rem;--space-8: 1.5rem}.modal-overlay{padding:var(--space-2)}.modal-content{max-width:100%;max-height:100%}.notification{left:var(--space-4);right:var(--space-4);max-width:none}.btn-text{display:none}}@media (max-width: 480px){.modal-header,.modal-body,.modal-footer,.card{padding:var(--space-4)}}