.landing-container{min-height:100vh;background:var(--bg-primary)}.landing-header{background:var(--bg-primary);border-bottom:1px solid var(--border-color);padding:var(--spacing-md) 0;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.landing-header .header-content{display:flex;justify-content:space-between;align-items:center}.header-actions{display:flex;gap:var(--spacing-sm);align-items:center}.hero-section{padding:calc(var(--spacing-xl) * 4) 0;position:relative;overflow:hidden}.hero-section .container{display:grid;grid-template-columns:1fr 1fr;gap:calc(var(--spacing-xl) * 2);align-items:center}.hero-content{max-width:600px}.hero-title{font-size:3.5rem;line-height:1.2;margin-bottom:var(--spacing-lg);font-weight:800}.gradient-text{background:linear-gradient(135deg,var(--accent-primary),var(--success));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);margin-bottom:calc(var(--spacing-xl) * 2);line-height:1.6}.hero-buttons{display:flex;gap:var(--spacing-md);flex-wrap:wrap}.btn-lg{padding:var(--spacing-md) calc(var(--spacing-xl) * 1.5);font-size:1rem}.hero-visual{position:relative}.demo-card{padding:var(--spacing-lg);border-radius:var(--radius-lg)}.demo-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg)}.demo-habit-info{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:600}.demo-color-dot{width:16px;height:16px;border-radius:50%}.demo-grid{display:flex;gap:3px;overflow-x:auto;padding:var(--spacing-sm) 0}.demo-week{display:flex;flex-direction:column;gap:3px}.demo-cell{width:10px;height:10px;border-radius:2px;border:1px solid rgba(48,54,61,.3)}.how-it-works-section{padding:calc(var(--spacing-xl) * 4) 0;background:var(--bg-secondary)}.section-title{text-align:center;font-size:2.5rem;margin-bottom:var(--spacing-md)}.section-subtitle{text-align:center;font-size:1.125rem;color:var(--text-secondary);margin-bottom:calc(var(--spacing-xl) * 2)}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl);margin-top:calc(var(--spacing-xl) * 2)}.step-card{text-align:center;position:relative;padding:calc(var(--spacing-xl) * 1.5)}.step-number{position:absolute;top:var(--spacing-md);right:var(--spacing-md);width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--accent-primary),var(--accent-hover));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem}.step-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.step-card h3{margin-bottom:var(--spacing-sm);font-size:1.5rem}.step-card p{color:var(--text-secondary);line-height:1.6}.features-section{padding:calc(var(--spacing-xl) * 4) 0}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-lg);margin-top:calc(var(--spacing-xl) * 2)}.feature-card{padding:var(--spacing-xl);text-align:center;transition:all var(--transition-normal)}.feature-card:hover{transform:translateY(-8px)}.feature-icon{font-size:2.5rem;margin-bottom:var(--spacing-md)}.feature-card h3{margin-bottom:var(--spacing-sm);font-size:1.25rem}.feature-card p{color:var(--text-secondary);font-size:.9rem}.cta-section{padding:calc(var(--spacing-xl) * 4) 0;background:var(--bg-secondary)}.cta-content{text-align:center;padding:calc(var(--spacing-xl) * 3);border-radius:var(--radius-lg)}.cta-content h2{font-size:2.5rem;margin-bottom:var(--spacing-md)}.cta-content p{font-size:1.125rem;color:var(--text-secondary);margin-bottom:calc(var(--spacing-xl) * 1.5);max-width:600px;margin-left:auto;margin-right:auto}.landing-footer{padding:calc(var(--spacing-xl) * 2) 0;text-align:center;border-top:1px solid var(--border-color)}.landing-footer p{color:var(--text-tertiary);margin:0}@media (max-width: 1024px){.hero-section .container{grid-template-columns:1fr;gap:var(--spacing-xl)}.hero-title{font-size:2.5rem}.hero-visual{order:-1}}@media (max-width: 768px){.landing-header .header-content{flex-direction:column;gap:var(--spacing-md)}.header-actions{width:100%;justify-content:center}.hero-section{padding:calc(var(--spacing-xl) * 2) 0}.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}.hero-buttons{flex-direction:column}.hero-buttons .btn{width:100%;justify-content:center}.section-title{font-size:2rem}.steps-grid,.features-grid{grid-template-columns:1fr}.cta-content h2{font-size:1.75rem}}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl);background:linear-gradient(135deg,#0d1117,#161b22)}.auth-card{width:100%;max-width:420px;padding:var(--spacing-xl);border-radius:var(--radius-lg)}.auth-header{text-align:center;margin-bottom:var(--spacing-xl)}.auth-header h1{font-size:2rem;margin-bottom:var(--spacing-sm);background:linear-gradient(135deg,var(--accent-primary),var(--accent-hover));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-form{margin-bottom:var(--spacing-lg)}.btn-full{width:100%;justify-content:center;padding:var(--spacing-md);font-size:1rem;margin-top:var(--spacing-sm)}.auth-footer{text-align:center;padding-top:var(--spacing-lg);border-top:1px solid var(--border-color)}.auth-link{color:var(--accent-primary);text-decoration:none;font-weight:500;transition:color var(--transition-fast)}.auth-link:hover{color:var(--accent-hover);text-decoration:underline}.error-message{padding:var(--spacing-md);background:#f851491a;border:1px solid var(--error);border-radius:var(--radius-md);color:var(--error);margin-bottom:var(--spacing-lg);font-size:.875rem;animation:slideIn var(--transition-normal)}.success-message{padding:var(--spacing-md);background:#3fb9501a;border:1px solid var(--success);border-radius:var(--radius-md);color:var(--success);margin-bottom:var(--spacing-lg);font-size:.875rem;animation:slideIn var(--transition-normal)}.contribution-grid-container{margin-top:var(--spacing-lg);position:relative}.contribution-grid{display:flex;gap:3px;overflow-x:auto;padding:var(--spacing-md) 0;scrollbar-width:thin}.grid-week{display:flex;flex-direction:column;gap:3px}.grid-cell{width:11px;height:11px;border-radius:2px;cursor:default;transition:all var(--transition-fast);border:1px solid rgba(48,54,61,.3)}.grid-cell:hover{transform:scale(1.15);z-index:10}.grid-tooltip{position:fixed;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:var(--spacing-sm) var(--spacing-md);font-size:.75rem;pointer-events:none;z-index:1000;box-shadow:var(--shadow-md);animation:fadeIn .15s ease}.grid-legend{display:flex;align-items:center;gap:var(--spacing-xs);margin-top:var(--spacing-md);font-size:.75rem;color:var(--text-tertiary)}.legend-label{margin:0 var(--spacing-xs)}.legend-cell{width:11px;height:11px;border-radius:2px;border:1px solid rgba(48,54,61,.3)}.month-labels{display:flex;gap:3px;margin-bottom:var(--spacing-sm);font-size:.75rem;color:var(--text-tertiary)}@media (max-width: 768px){.contribution-grid,.grid-week{gap:2px}.grid-cell,.legend-cell{width:9px;height:9px}}.habit-card{margin-bottom:var(--spacing-xl)}.habit-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-md)}.habit-title-section{display:flex;align-items:center;gap:var(--spacing-md);flex:1}.habit-color-indicator{width:20px;height:20px;border-radius:50%;flex-shrink:0;box-shadow:0 0 8px currentColor;animation:pulse 2s ease-in-out infinite}.habit-name{margin:0;font-size:1.25rem;font-weight:600}.habit-actions{display:flex;gap:var(--spacing-sm);align-items:center}.habit-actions .btn{padding:var(--spacing-xs) var(--spacing-sm)}.btn-mark-today{background:linear-gradient(135deg,var(--success) 0%,#2ea043 100%);border-color:var(--success);color:#fff;font-weight:600;padding:var(--spacing-sm) var(--spacing-lg);box-shadow:0 2px 8px #3fb9504d;transition:all var(--transition-fast)}.btn-mark-today:hover:not(:disabled){background:linear-gradient(135deg,#2ea043 0%,var(--success) 100%);transform:translateY(-2px);box-shadow:0 4px 12px #3fb95066}.btn-mark-today:active:not(:disabled){transform:translateY(0)}.btn-mark-today:disabled{opacity:.6;cursor:not-allowed;transform:none}@media (max-width: 768px){.habit-header{flex-direction:column;align-items:flex-start;gap:var(--spacing-md)}.habit-actions{width:100%;justify-content:flex-end}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-xl);animation:fadeIn var(--transition-normal)}.modal-content{width:100%;max-width:500px;padding:var(--spacing-xl);border-radius:var(--radius-lg);animation:slideIn var(--transition-normal)}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg)}.modal-header h2{margin:0}.modal-close{background:none;border:none;color:var(--text-secondary);font-size:2rem;cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.modal-close:hover{background:var(--bg-hover);color:var(--text-primary)}.color-picker{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.color-option{width:100%;aspect-ratio:1;border-radius:var(--radius-sm);cursor:pointer;border:2px solid transparent;transition:all var(--transition-fast)}.color-option:hover{transform:scale(1.1);box-shadow:0 0 12px currentColor}.color-option.selected{border-color:var(--text-primary);box-shadow:0 0 0 3px #58a6ff4d;transform:scale(1.05)}.color-input{width:100%;height:40px;border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;background:var(--bg-tertiary)}.modal-actions{display:flex;gap:var(--spacing-md);justify-content:flex-end;margin-top:var(--spacing-xl)}.modal-actions .btn{min-width:100px}@media (max-width: 768px){.modal-overlay{padding:var(--spacing-md)}.color-picker{grid-template-columns:repeat(4,1fr)}}.dashboard-container{min-height:100vh;background:var(--bg-primary)}.dashboard-header{background:var(--bg-primary);border-bottom:1px solid var(--border-color);padding:var(--spacing-md) 0;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.header-content{display:flex;justify-content:space-between;align-items:center}.header-left{display:flex;align-items:center;gap:var(--spacing-lg)}.logo{display:flex;align-items:center;gap:var(--spacing-sm);font-size:.9rem;font-weight:600;color:var(--text-primary);margin:0}.logo-icon{font-size:.4rem;color:var(--accent-primary);animation:pulse 2s ease-in-out infinite}.logo-text{letter-spacing:-.02em}.welcome-text{margin:0;color:var(--text-secondary);font-size:.875rem}.header-right{display:flex;gap:var(--spacing-sm);align-items:center}.btn-icon{width:36px;height:36px;border-radius:50%;border:1px solid var(--border-color);background:transparent;color:var(--text-primary);font-size:1rem;cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center}.btn-icon:hover{background:var(--bg-hover);border-color:var(--border-hover);transform:scale(1.05)}.dashboard-main{padding-top:var(--spacing-xl);padding-bottom:var(--spacing-xl)}.habits-list{display:flex;flex-direction:column;gap:var(--spacing-xl)}.empty-state{text-align:center;padding:var(--spacing-xl) * 2;max-width:500px;margin:0 auto}.empty-icon{font-size:4rem;margin-bottom:var(--spacing-lg);animation:pulse 2s ease-in-out infinite}.empty-state h2{margin-bottom:var(--spacing-sm)}.empty-state p{margin-bottom:var(--spacing-lg)}.loading{display:flex;justify-content:center;align-items:center;min-height:100vh;font-size:1.25rem;color:var(--text-secondary);animation:pulse 1.5s ease-in-out infinite}@media (max-width: 768px){.header-content{flex-direction:column;gap:var(--spacing-md);align-items:flex-start}.header-right{width:100%;flex-direction:column}.header-right .btn{width:100%;justify-content:center}.dashboard-header{position:relative}}.footer{width:100%;padding:1rem;display:flex;justify-content:center;align-items:center;background-color:transparent;margin-top:auto}.footer-link{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--text-secondary, #666);font-size:.9rem;transition:color .2s ease;opacity:.7}.footer-link:hover{color:var(--primary-color, #4CAF50);opacity:1}.made-by{font-weight:400}.username{font-weight:600}.github-logo{fill:currentColor}:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #21262d;--bg-hover: #30363d;--text-primary: #e6edf3;--text-secondary: #8b949e;--text-tertiary: #6e7681;--border-color: #30363d;--border-hover: #484f58;--accent-primary: #58a6ff;--accent-hover: #79c0ff;--success: #3fb950;--error: #f85149;--warning: #d29922;--empty-cell: #161b22;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .5);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f6f8fa;--bg-tertiary: #ffffff;--bg-hover: #f3f4f6;--text-primary: #1f2937;--text-secondary: #6b7280;--text-tertiary: #9ca3af;--border-color: #e5e7eb;--border-hover: #d1d5db;--accent-primary: #2563eb;--accent-hover: #1d4ed8;--success: #10b981;--error: #ef4444;--warning: #f59e0b;--empty-cell: #f3f4f6;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .15)}*{margin:0;padding:0;box-sizing:border-box;transition:background-color var(--transition-normal),color var(--transition-normal),border-color var(--transition-normal)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;margin-bottom:var(--spacing-md)}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}.btn{padding:var(--spacing-sm) var(--spacing-lg);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-secondary);color:var(--text-primary);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);font-family:inherit;display:inline-flex;align-items:center;gap:var(--spacing-sm);box-shadow:var(--shadow-sm)}.btn:hover{background:var(--bg-hover);border-color:var(--border-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn:active{transform:translateY(0)}.btn-primary{background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-hover) 100%);border-color:var(--accent-primary);color:#fff;box-shadow:0 2px 8px #2563eb4d}.btn-primary:hover{background:linear-gradient(135deg,var(--accent-hover) 0%,var(--accent-primary) 100%);border-color:var(--accent-hover);box-shadow:0 4px 12px #2563eb66}.btn-danger{background:linear-gradient(135deg,var(--error) 0%,#dc2626 100%);border-color:var(--error);color:#fff;box-shadow:0 2px 8px #ef44444d}.btn-danger:hover{background:linear-gradient(135deg,#dc2626 0%,var(--error) 100%);border-color:#dc2626;box-shadow:0 4px 12px #ef444466}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:.75rem}.btn-ghost{background:transparent;border-color:transparent;color:var(--text-secondary);box-shadow:none}.btn-ghost:hover{background:var(--bg-hover);border-color:transparent;color:var(--text-primary)}.form-group{margin-bottom:var(--spacing-lg)}.form-label{display:block;margin-bottom:var(--spacing-sm);font-size:.875rem;font-weight:500;color:var(--text-secondary)}.form-input{width:100%;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;font-family:inherit;transition:all var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #58a6ff1a}.form-input::placeholder{color:var(--text-tertiary)}.card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);transition:all var(--transition-normal);box-shadow:var(--shadow-sm)}.card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.glass{background:#161b22b3;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(48,54,61,.5);box-shadow:0 8px 32px #0000004d}[data-theme=light] .glass{background:#ffffffb3;border:1px solid rgba(229,231,235,.5);box-shadow:0 8px 32px #0000001a}.container{max-width:1200px;margin:0 auto;padding:var(--spacing-xl)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.fade-in{animation:fadeIn var(--transition-normal) ease-out}.slide-in{animation:slideIn var(--transition-normal) ease-out}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb:hover{background:var(--bg-hover)}.text-center{text-align:center}.text-secondary{color:var(--text-secondary)}.text-error{color:var(--error)}.text-success{color:var(--success)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.flex{display:flex}.flex-column{flex-direction:column}.flex-center{justify-content:center;align-items:center}.flex-between{justify-content:space-between;align-items:center}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}