*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #6366f1;--primary-dark: #4f46e5;--primary-light: #818cf8;--secondary: #ec4899;--secondary-dark: #db2777;--success: #10b981;--danger: #ef4444;--warning: #f59e0b;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--gray-900: #111827;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", sans-serif;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1);--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--transition-fast: .15s ease-in-out;--transition-base: .25s ease-in-out;--transition-slow: .35s ease-in-out}body{font-family:var(--font-sans);color:var(--gray-900);background-color:var(--gray-50);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;padding:var(--spacing-lg) 0}.header{background:#fff;border-bottom:1px solid var(--gray-200);padding:var(--spacing-md) 0;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:var(--spacing-sm);text-decoration:none;color:var(--gray-900);font-size:1.25rem;font-weight:700;transition:var(--transition-base)}.logo:hover{color:var(--primary)}.logo-icon{font-size:1.5rem}.nav{display:flex;gap:var(--spacing-lg)}.nav-link{text-decoration:none;color:var(--gray-600);font-weight:500;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);transition:var(--transition-base)}.nav-link:hover{color:var(--primary);background:var(--gray-100)}.nav-link.active{color:var(--primary);background:var(--primary-light);background:#6366f11a}.footer{background:var(--gray-900);color:var(--gray-300);padding:var(--spacing-2xl) 0 var(--spacing-lg);margin-top:var(--spacing-3xl)}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.footer-section h4{color:#fff;margin-bottom:var(--spacing-md)}.footer-links{list-style:none}.footer-links li{margin-bottom:var(--spacing-sm)}.footer-links a{color:var(--gray-400);text-decoration:none;transition:var(--transition-base)}.footer-links a:hover{color:#fff}.footer-bottom{text-align:center;padding-top:var(--spacing-lg);border-top:1px solid var(--gray-700);color:var(--gray-500)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}button,.btn{font-family:inherit;cursor:pointer;border:none;outline:none;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);font-weight:600;transition:var(--transition-base);text-decoration:none;display:inline-block;text-align:center}button:disabled,.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md);color:#fff}.btn-secondary{background-color:var(--gray-200);color:var(--gray-900)}.btn-secondary:hover:not(:disabled){background-color:var(--gray-300)}.btn-lg{padding:var(--spacing-md) var(--spacing-xl);font-size:1.125rem}input,textarea{font-family:inherit;padding:var(--spacing-sm) var(--spacing-md);border:2px solid var(--gray-300);border-radius:var(--radius-md);outline:none;transition:var(--transition-base);font-size:1rem;width:100%}input:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.hero{text-align:center;padding:var(--spacing-3xl) 0}.hero-title{font-size:3.5rem;font-weight:800;margin-bottom:var(--spacing-md);background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.25rem;color:var(--gray-600);margin-bottom:var(--spacing-xl);max-width:600px;margin-left:auto;margin-right:auto}.hero-actions{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-xl);margin:var(--spacing-3xl) 0}.feature-card{background:#fff;padding:var(--spacing-xl);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);text-align:center;transition:var(--transition-base)}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}.feature-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.feature-card h3{margin-bottom:var(--spacing-sm);color:var(--gray-900)}.feature-card p{color:var(--gray-600)}.how-it-works{margin:var(--spacing-3xl) 0}.how-it-works h2{text-align:center;margin-bottom:var(--spacing-xl);font-size:2rem}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-xl)}.step{text-align:center}.step-number{width:3rem;height:3rem;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;margin:0 auto var(--spacing-md)}.step h4{margin-bottom:var(--spacing-sm)}.step p{color:var(--gray-600)}.create-intro{max-width:600px;margin:var(--spacing-3xl) auto;text-align:center}.create-intro h1{font-size:2.5rem;margin-bottom:var(--spacing-md)}.create-intro p{color:var(--gray-600);font-size:1.125rem;margin-bottom:var(--spacing-xl)}.recipient-form{display:flex;flex-direction:column;gap:var(--spacing-md);margin-bottom:var(--spacing-xl)}.recipient-input{font-size:1.25rem;padding:var(--spacing-md);text-align:center}.create-tips{background:var(--gray-100);padding:var(--spacing-lg);border-radius:var(--radius-lg);text-align:left}.create-tips h3{margin-bottom:var(--spacing-md)}.create-tips ul{list-style-position:inside;color:var(--gray-600)}.canvas-header{margin-bottom:var(--spacing-lg);text-align:center}.recipient-name{color:var(--primary)}.canvas-placeholder{background:#fff;border:2px dashed var(--gray-300);border-radius:var(--radius-lg);padding:var(--spacing-3xl);text-align:center;color:var(--gray-500);min-height:500px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:var(--spacing-md)}.canvas-actions{display:flex;justify-content:space-between;margin-top:var(--spacing-lg);gap:var(--spacing-md)}.view-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl);flex-wrap:wrap;gap:var(--spacing-md)}.doodles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--spacing-lg)}.doodle-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:var(--transition-base)}.doodle-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.doodle-card img{width:100%;height:300px;object-fit:cover}.doodle-placeholder{height:300px;background:var(--gray-100);display:flex;align-items:center;justify-content:center;font-size:4rem}.doodle-message{padding:var(--spacing-md);border-top:1px solid var(--gray-200);color:var(--gray-700);font-style:italic}.doodle-meta{padding:var(--spacing-md);display:flex;justify-content:space-between;font-size:.875rem;color:var(--gray-500);border-top:1px solid var(--gray-200)}.search-form{display:flex;gap:var(--spacing-md);margin:var(--spacing-xl) 0;max-width:600px}.search-input{flex:1}.recipients-list{display:flex;flex-direction:column;gap:var(--spacing-md);margin-top:var(--spacing-xl)}.recipient-item{background:#fff;padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);display:flex;justify-content:space-between;align-items:center;text-decoration:none;color:inherit;transition:var(--transition-base)}.recipient-item:hover{box-shadow:var(--shadow-md);transform:translate(4px)}.recipient-info h3{margin-bottom:var(--spacing-xs);color:var(--gray-900)}.recipient-info p{color:var(--gray-600);font-size:.875rem}.recipient-arrow{font-size:1.5rem;color:var(--primary)}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl)}.history-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.history-item{background:#fff;padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md)}.history-info h3{margin-bottom:var(--spacing-xs)}.history-date{color:var(--gray-500);font-size:.875rem}.history-message{color:var(--gray-600);font-style:italic;margin-top:var(--spacing-sm)}.history-note{margin-top:var(--spacing-xl);padding:var(--spacing-md);background:var(--gray-100);border-radius:var(--radius-md);color:var(--gray-600);font-size:.875rem}.loading,.error,.empty-state{text-align:center;padding:var(--spacing-3xl)}.empty-icon{font-size:4rem;margin-bottom:var(--spacing-md)}.empty-state h2{margin-bottom:var(--spacing-md);color:var(--gray-700)}.empty-state p{color:var(--gray-600);margin-bottom:var(--spacing-lg)}.error{color:var(--danger)}.notfound-content{text-align:center;max-width:600px;margin:var(--spacing-3xl) auto}.notfound-code{font-size:8rem;font-weight:800;color:var(--primary);line-height:1;margin-bottom:var(--spacing-md)}.notfound-content h2{font-size:2rem;margin-bottom:var(--spacing-md)}.notfound-content p{color:var(--gray-600);font-size:1.125rem;margin-bottom:var(--spacing-xl)}.notfound-actions{display:flex;gap:var(--spacing-md);justify-content:center;margin-bottom:var(--spacing-xl)}.notfound-suggestions{background:var(--gray-100);padding:var(--spacing-lg);border-radius:var(--radius-lg);text-align:left}.notfound-suggestions ul{list-style-position:inside;margin-top:var(--spacing-md)}.notfound-suggestions a{color:var(--primary);text-decoration:none}.notfound-suggestions a:hover{text-decoration:underline}@media (max-width: 768px){.hero-title{font-size:2.5rem}.nav{gap:var(--spacing-sm)}.nav-link{padding:var(--spacing-xs) var(--spacing-sm);font-size:.875rem}.features,.steps{grid-template-columns:1fr}.hero-actions{flex-direction:column}.btn-lg{width:100%}.canvas-actions{flex-direction:column}.view-header{flex-direction:column;align-items:flex-start}.search-form{flex-direction:column}.history-item{flex-direction:column;align-items:flex-start}}.canvas-workspace{padding:var(--spacing-lg) 0}.canvas-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl);flex-wrap:wrap;gap:var(--spacing-md)}.canvas-main{display:grid;grid-template-columns:280px 1fr;gap:var(--spacing-xl)}.canvas-sidebar,.canvas-area{display:flex;flex-direction:column;gap:var(--spacing-lg)}.doodle-canvas-wrapper{position:relative;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;width:fit-content}.doodle-canvas-wrapper canvas{display:block}.drawing-indicator{position:absolute;top:var(--spacing-md);right:var(--spacing-md);background:var(--primary);color:#fff;padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--radius-md);font-size:.875rem;font-weight:600;animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.brush-selector{background:#fff;padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.brush-selector h4{margin-bottom:var(--spacing-md);color:var(--gray-700)}.brush-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-sm)}.brush-button{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-md);background:var(--gray-50);border:2px solid var(--gray-200);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-base)}.brush-button:hover{background:var(--gray-100);border-color:var(--primary)}.brush-button.active{background:var(--primary-light);background:#6366f11a;border-color:var(--primary)}.brush-icon{font-size:1.5rem}.brush-name{font-size:.75rem;font-weight:600;color:var(--gray-700)}.color-palette{background:#fff;padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.color-palette h4,.color-palette h5{margin-bottom:var(--spacing-md);color:var(--gray-700)}.color-palette h5{font-size:.875rem;margin-top:var(--spacing-lg)}.color-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.color-button{width:100%;aspect-ratio:1;border:2px solid var(--gray-300);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-base)}.color-button:hover{transform:scale(1.1)}.color-button.active{border-color:var(--gray-900);border-width:3px;transform:scale(1.15);box-shadow:var(--shadow-md)}.custom-color{display:flex;gap:var(--spacing-sm);align-items:center;margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--gray-200)}.color-picker{width:50px;height:40px;border:2px solid var(--gray-300);border-radius:var(--radius-md);cursor:pointer}.color-hex-input{flex:1;padding:var(--spacing-sm);font-family:var(--font-mono);font-size:.875rem}.drawing-toolbar{background:#fff;padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);display:flex;flex-direction:column;gap:var(--spacing-lg)}.toolbar-section h4{margin-bottom:var(--spacing-md);color:var(--gray-700);font-size:.875rem}.toolbar-buttons{display:flex;flex-direction:column;gap:var(--spacing-sm)}.toolbar-btn{padding:var(--spacing-sm) var(--spacing-md);background:var(--gray-100);border:none;border-radius:var(--radius-md);font-weight:500;cursor:pointer;transition:var(--transition-base);text-align:left}.toolbar-btn:hover:not(:disabled){background:var(--gray-200)}.toolbar-btn:disabled{opacity:.5;cursor:not-allowed}.toolbar-btn-primary{background:var(--primary);color:#fff}.toolbar-btn-primary:hover:not(:disabled){background:var(--primary-dark)}.toolbar-btn-danger{background:var(--danger);color:#fff}.toolbar-btn-danger:hover:not(:disabled){background:#dc2626}.brush-size-control{display:flex;align-items:center;gap:var(--spacing-md)}.brush-size-slider{flex:1;height:4px;background:var(--gray-200);border-radius:var(--radius-sm);outline:none;cursor:pointer}.brush-size-slider::-webkit-slider-thumb{width:16px;height:16px;background:var(--primary);border-radius:50%;cursor:pointer}.brush-size-value{min-width:40px;text-align:right;font-weight:600;color:var(--gray-700)}.canvas-message{background:#fff;padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.canvas-message label{display:block;margin-bottom:var(--spacing-sm);font-weight:600;color:var(--gray-700)}.canvas-message textarea{width:100%;resize:vertical}.char-count{display:block;text-align:right;font-size:.75rem;color:var(--gray-500);margin-top:var(--spacing-xs)}.success-message{text-align:center;padding:var(--spacing-3xl)}.success-icon{font-size:5rem;margin-bottom:var(--spacing-lg)}.success-message h1{color:var(--success);margin-bottom:var(--spacing-md)}.success-message p{font-size:1.125rem;color:var(--gray-600)}.success-redirect{margin-top:var(--spacing-lg);color:var(--primary);font-weight:600;animation:pulse 1s infinite}@media (max-width: 1024px){.canvas-main{grid-template-columns:1fr}.canvas-sidebar{order:2}.canvas-area{order:1}.doodle-canvas-wrapper{width:100%}.doodle-canvas-wrapper canvas{width:100%!important;height:auto!important}.brush-grid{grid-template-columns:repeat(5,1fr)}.toolbar-buttons{flex-direction:row;flex-wrap:wrap}.toolbar-btn{flex:1;min-width:100px}}@media (max-width: 768px){.canvas-header{flex-direction:column;align-items:flex-start}.brush-grid{grid-template-columns:repeat(3,1fr)}}.error-banner{background:#fee;border:2px solid #f88;color:#c33;padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg);display:flex;justify-content:space-between;align-items:center}.error-banner button{background:none;border:none;color:#c33;font-size:1.5rem;cursor:pointer;padding:0 var(--spacing-sm)}.doodle-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #0000001a;transition:transform .2s,box-shadow .2s}.doodle-card:hover{transform:translateY(-4px);box-shadow:0 4px 16px #00000026}.doodle-image-container{position:relative;width:100%;padding-top:75%;background:#f5f5f5;overflow:hidden}.doodle-image{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:contain;background:#fff}.image-error{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#f8f8f8;color:#999}.image-error span{font-size:3rem;margin-bottom:.5rem}.doodle-message{padding:1rem;border-top:1px solid #eee}.doodle-message p{margin:0;color:#333;font-size:.95rem;line-height:1.5;word-wrap:break-word}.doodle-meta{padding:.75rem 1rem;background:#f9f9f9;display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:#666}.doodle-date{font-weight:500}.doodle-views{display:flex;align-items:center;gap:.25rem}.doodles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem;margin:2rem 0}@media (max-width: 768px){.doodles-grid{grid-template-columns:1fr;gap:1.5rem}}.view-footer{text-align:center;margin-top:2rem;padding-top:2rem;border-top:1px solid #eee}.doodle-count{color:#666;font-size:.9rem}.hero{background:linear-gradient(135deg,#f5f7fa,#c3cfe2);color:#fff;padding:6rem 0 8rem;text-align:center;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");opacity:.1}.hero-content{position:relative;z-index:1;max-width:700px;margin:0 auto}.hero-title{font-size:3.5rem;font-weight:800;line-height:1.2;margin:0 0 1.5rem;letter-spacing:-.02em}.hero-title{color:#fff;text-shadow:0 2px 20px rgba(0,0,0,.3)}.hero-subtitle{font-size:1.25rem;line-height:1.6;opacity:.95;margin:0 0 2.5rem;max-width:600px;margin-left:auto;margin-right:auto}.hero-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn-large{padding:1rem 2.5rem;font-size:1.1rem;font-weight:600;display:inline-flex;align-items:center;gap:.5rem}.features{padding:5rem 0;background:#f8f9fa}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2.5rem;max-width:1000px;margin:0 auto}.feature-card{background:#fff;padding:2.5rem 2rem;border-radius:16px;text-align:center;box-shadow:0 2px 8px #00000014;transition:transform .3s,box-shadow .3s}.feature-icon{width:64px;height:64px;margin:0 auto 1.5rem;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:16px;display:flex;align-items:center;justify-content:center;color:#fff}.feature-card p{margin:0;color:#666;line-height:1.6}.how-it-works{padding:5rem 0;background:#fff}.section-title{text-align:center;font-size:2.5rem;font-weight:800;margin:0 0 4rem;color:#1a1a1a}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:3rem;max-width:900px;margin:0 auto}.step-number{width:56px;height:56px;margin:0 auto 1.5rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700}.step h3{font-size:1.3rem;margin:0 0 .75rem;font-weight:700;color:#1a1a1a}.step p{margin:0;color:#666;line-height:1.6}.cta{padding:5rem 0;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center}.cta-content{max-width:600px;margin:0 auto}.cta h2{font-size:2.5rem;font-weight:800;margin:0 0 1rem}.cta p{font-size:1.2rem;margin:0 0 2rem;opacity:.95}.btn{display:inline-block;padding:.75rem 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