:root{--primary-color: #6366f1;--primary-hover: #5b21b6;--primary-light: rgba(99, 102, 241, .1);--primary-subtle: rgba(99, 102, 241, .03);--neutral-50: #f9fafb;--neutral-200: #f3f4f6;--neutral-300: #e5e7eb;--neutral-400: #d1d5db;--neutral-500: #9ca3af;--neutral-600: #6b7280;--neutral-700: #374151;--neutral-800: #1f2937;--neutral-900: #111827;--success-bg: #f0fdf4;--success-border: #bbf7d0;--success-text: #166534;--warning-color: #f59e0b;--danger-color: #dc2626;--danger-hover: #b91c1c;--danger-active: #991b1b;--error-bg: #fef2f2;--error-border: #fecaca;--error-text: #dc2626;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 20px;--spacing-2xl: 24px;--spacing-3xl: 32px;--spacing-4xl: 48px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px rgba(99, 102, 241, .08);--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif;--font-mono: "SF Mono", "Monaco", "Inconsolata", "Roboto Mono", monospace;--grid-size: 20px;--container-max-width: 1400px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:var(--neutral-50);background-image:linear-gradient(var(--primary-subtle) 1px,transparent 1px),linear-gradient(90deg,var(--primary-subtle) 1px,transparent 1px);background-size:var(--grid-size) var(--grid-size);min-height:100vh;color:var(--neutral-800);line-height:1.5;display:flex;flex-direction:column}.section{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--neutral-300);box-shadow:var(--shadow-sm);padding:var(--spacing-2xl);margin-bottom:var(--spacing-2xl)}.btn{background:var(--neutral-50);color:var(--neutral-700);border:1px solid var(--neutral-300);border-radius:var(--radius-md);padding:var(--spacing-md) var(--spacing-lg);font-weight:500;cursor:pointer;font-size:14px;height:44px;display:flex;align-items:center;justify-content:center;text-decoration:none;font-family:inherit}.btn:hover{background:var(--neutral-200);border-color:var(--neutral-400)}.btn:active{background:var(--neutral-300)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn:disabled:hover{background:var(--neutral-50);border-color:var(--neutral-300)}.btn-primary{background:var(--primary-color);color:#fff;border-color:var(--primary-color);font-weight:600}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}.btn-danger{background:var(--danger-color);color:#fff;border:1px solid var(--danger-color);font-weight:600;margin-bottom:var(--spacing-4xl)}.btn-danger:hover{background:var(--danger-hover);border-color:var(--danger-hover)}.btn-danger:active{background:var(--danger-active);border-color:var(--danger-active)}.btn-full-width{width:100%}.hidden{display:none}.flex{display:flex}.flex-between{display:flex;justify-content:space-between;align-items:center}.flex-gap-sm{gap:var(--spacing-sm)}.flex-gap-lg{gap:var(--spacing-lg)}.text-title,.profile-title,.error-title,.report-title{font-size:32px;font-weight:700;letter-spacing:-.02em;color:var(--neutral-900);margin-bottom:var(--spacing-md)}.glass-panel{background:#fffc;backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.9);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.aspect-square{aspect-ratio:1}.aspect-canvas{aspect-ratio:var(--canvas-aspect-ratio, 1)}.app-header{background:transparent;padding:var(--spacing-lg) var(--spacing-2xl);position:sticky;top:0;z-index:100}.header-container{max-width:var(--container-max-width);margin:0 auto;height:64px}.header-left,.header-auth{flex-shrink:0}.app-logo{font-size:20px;font-weight:700;color:var(--primary-color);text-decoration:none;letter-spacing:-.02em;padding:var(--spacing-md) var(--spacing-lg)}.app-logo:hover{color:var(--primary-hover);background:#ffffffe6;box-shadow:var(--shadow-md)}.auth-links{padding:var(--spacing-md) var(--spacing-lg);align-items:center}.guest-link{font-size:16px;font-weight:500;color:var(--primary-color);text-decoration:none}.guest-link:hover{color:var(--primary-hover);text-decoration:underline}.signup-btn{font-size:14px;padding:var(--spacing-sm) var(--spacing-md);height:auto}.user-dropdown{position:relative}.user-dropdown-toggle{padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:none;font-size:14px;font-weight:500;color:var(--neutral-700);cursor:pointer;align-items:center}.user-dropdown-toggle:hover{color:var(--primary-color)}.user-name{font-weight:500;font-size:16px}.dropdown-arrow{font-size:10px;transition:transform .15s ease;display:inline-flex;align-items:center;justify-content:center}.user-dropdown-toggle:hover .dropdown-arrow{transform:rotate(180deg)}.user-dropdown-menu{position:absolute;top:100%;right:0;background:#fff;border:1px solid var(--neutral-300);border-radius:var(--radius-md);box-shadow:var(--shadow-md);min-width:160px;padding:var(--spacing-xs) 0;z-index:200;opacity:0;visibility:hidden;transform:translateY(-8px);transition:all .15s ease;margin-top:var(--spacing-xs)}.user-dropdown-menu.show{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-item{padding:var(--spacing-sm) var(--spacing-md);color:var(--neutral-700);text-decoration:none;font-size:14px;font-weight:500;transition:all .15s ease;border:none;background:none;width:100%;text-align:left;cursor:pointer}.dropdown-item:hover{background:var(--neutral-50);color:var(--primary-color)}.dropdown-icon{font-size:14px}.dropdown-form{margin:0}.dropdown-button{font-family:inherit}.gallery-link{font-size:14px;font-weight:500;color:var(--neutral-600);text-decoration:none;transition:all .15s ease;display:inline-flex;align-items:center;gap:var(--spacing-xs)}.gallery-link:hover{color:var(--primary-color);text-decoration:underline}.container{max-width:var(--container-max-width);margin:0 auto;padding:0 var(--spacing-2xl) var(--spacing-2xl)}.prompt-section{text-align:center;margin-bottom:var(--spacing-sm)}.main-prompt{font-size:32px;font-weight:600;color:var(--neutral-900);margin-bottom:var(--spacing-md);letter-spacing:-.01em;line-height:1.3;background:linear-gradient(135deg,var(--neutral-900) 0%,var(--primary-color) 100%);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-size:200% 200%;animation:subtle-gradient 8s ease-in-out infinite;font-family:var(--font-family);max-width:800px;margin-left:auto;margin-right:auto;padding:var(--spacing-md);position:relative;word-wrap:break-word;text-align:center;hyphens:auto}@keyframes subtle-gradient{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.submission-status{background:var(--success-bg);border:1px solid var(--success-border);border-radius:var(--radius-lg);padding:var(--spacing-3xl);margin:var(--spacing-3xl) 0;text-align:center}.submitted-message{font-size:18px;font-weight:600;color:var(--success-text);margin-bottom:var(--spacing-lg)}.countdown-label{font-size:14px;color:var(--neutral-600);margin-bottom:var(--spacing-sm)}.countdown{font-size:28px;font-weight:700;color:var(--primary-color);font-family:var(--font-mono);margin-bottom:var(--spacing-3xl)}.submission-actions{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap}.paint-workspace{display:flex;flex-direction:column;gap:var(--spacing-md);max-width:800px;margin:0 auto}.canvas-section{display:flex;justify-content:center;padding:var(--spacing-xs)}.color-palette{background:#fff;border-radius:var(--radius-lg);padding:var(--spacing-lg);border:1px solid var(--neutral-300);box-shadow:var(--shadow-sm);width:100%;max-width:600px;display:flex;gap:var(--spacing-sm);flex-wrap:wrap;align-items:center;justify-content:center}.tools{display:flex;flex-direction:column;gap:var(--spacing-md);align-items:center;padding:var(--spacing-md);margin:0 auto;max-width:600px}.brush-sizes{display:flex;gap:var(--spacing-sm);align-items:center;justify-content:center}@media (min-width: 480px){.tools{flex-direction:row;justify-content:center;gap:var(--spacing-lg)}.color-palette{justify-content:flex-start}}.submit-section{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-sm);text-align:center}.submit-section .submit-btn{min-width:200px;height:48px;font-size:16px;font-weight:600}.terms-text{font-size:13px;color:var(--neutral-600);line-height:1.4;max-width:400px;margin:0}.terms-text a{color:var(--primary-color);text-decoration:none}.terms-text a:hover{text-decoration:underline}.gallery-section{display:flex;justify-content:center;margin-top:var(--spacing-lg)}.gallery-compact{background:#fff;border-radius:var(--radius-md);padding:var(--spacing-md) var(--spacing-lg);border:1px solid var(--neutral-300);box-shadow:var(--shadow-sm);text-align:center}#paintCanvas{border:2px solid var(--primary-color);border-radius:var(--radius-md);cursor:crosshair;image-rendering:pixelated;image-rendering:-moz-crisp-edges;image-rendering:crisp-edges;box-shadow:var(--shadow-md);display:block}.brush-btn{width:36px;height:36px;border:2px solid var(--neutral-300);border-radius:var(--radius-md);background:#fff;cursor:pointer;font-size:8px;color:var(--neutral-600);display:flex;align-items:center;justify-content:center;transition:all .15s 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auto;display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-lg)}.footer-nav{display:flex;gap:var(--spacing-lg);align-items:center}.footer-text{font-size:13px;color:var(--neutral-500);font-weight:500}.gallery-title{color:var(--neutral-900);margin-bottom:var(--spacing-lg)}.gallery-prompt-section{text-align:center;margin-bottom:var(--spacing-4xl)}.gallery-prompt-prominent{font-size:36px;font-weight:600;color:var(--neutral-900);margin-bottom:var(--spacing-2xl);letter-spacing:-.01em;line-height:1.2;background:linear-gradient(135deg,var(--neutral-900) 0%,var(--primary-color) 100%);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;max-width:600px;margin-left:auto;margin-right:auto}.gallery-date-nav{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-lg)}.gallery-date{font-size:16px;color:var(--neutral-600);font-weight:500;margin:0}.date-navigation{display:flex;gap:var(--spacing-sm);justify-content:center;flex-wrap:wrap}.date-nav-btn{background:#fff;color:var(--neutral-700);border:1px solid var(--neutral-400);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);font-weight:500;font-size:14px;text-decoration:none;transition:all .15s ease;box-shadow:var(--shadow-sm)}.date-nav-btn:hover{background:var(--neutral-50);color:var(--neutral-800);border-color:var(--neutral-500);box-shadow:var(--shadow-md)}.date-nav-today{background:transparent;color:var(--neutral-500);border:none;padding:var(--spacing-sm) var(--spacing-md);font-weight:400;font-size:14px;text-decoration:none;transition:all 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ease}.author-link:hover{color:var(--primary-hover);text-decoration:underline}.report-link{font-size:12px;color:var(--neutral-400);text-decoration:none;font-weight:400;transition:color .15s ease}.report-link:hover{color:var(--neutral-600);text-decoration:underline}.empty-state{text-align:center;padding:var(--spacing-4xl)}.empty-state h3{font-size:20px;font-weight:600;color:var(--neutral-700);margin-bottom:var(--spacing-md)}.empty-state p{color:var(--neutral-600);margin-bottom:var(--spacing-xl)}.section-title{font-size:24px;font-weight:600;color:var(--neutral-800);margin-bottom:var(--spacing-xl);letter-spacing:-.01em}.guest-cta-container{display:flex;justify-content:center;margin-bottom:var(--spacing-3xl)}.guest-cta-card{background:linear-gradient(135deg,var(--primary-light) 0%,white 100%);border:1px solid var(--primary-color);border-radius:var(--radius-lg);padding:var(--spacing-3xl);max-width:600px;width:100%;box-shadow:var(--shadow-md);display:flex;flex-direction:column;align-items:center;text-align:center}.guest-cta-content{margin-bottom:var(--spacing-2xl)}.guest-cta-title{font-size:24px;font-weight:600;color:var(--neutral-800);margin-bottom:var(--spacing-lg);letter-spacing:-.01em}.guest-cta-description{color:var(--neutral-600);margin-bottom:var(--spacing-md);line-height:1.6;font-size:16px}.guest-cta-description:last-child{margin-bottom:0}.guest-cta-action{display:flex;justify-content:center}.guest-cta-btn{font-size:16px;padding:var(--spacing-md) 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li{color:var(--error-text);font-weight:500}.auth-required{text-align:center;max-width:500px;margin:0 auto}.auth-required h3{font-size:24px;font-weight:600;color:var(--neutral-800);margin-bottom:var(--spacing-lg)}.auth-required p{color:var(--neutral-600);margin-bottom:var(--spacing-xl);line-height:1.6}.auth-actions{display:flex;gap:var(--spacing-md);justify-content:center;margin-bottom:var(--spacing-xl);flex-wrap:wrap}.error-title{text-align:center}.error-description{color:var(--neutral-600);margin-bottom:var(--spacing-3xl);line-height:1.6;text-align:center;font-size:16px}.featured-artwork{text-align:center;margin:var(--spacing-3xl) 0}.featured-artwork h2{font-size:20px;font-weight:600;color:var(--neutral-700);margin-bottom:var(--spacing-xl)}.featured-artwork .painting-card{display:inline-block;max-width:300px;margin-bottom:var(--spacing-xl)}.form-page{max-width:500px;margin:0 auto;padding:var(--spacing-2xl)}.form-page .section{padding:var(--spacing-3xl)}.form-page h1{font-size:32px;font-weight:700;color:var(--neutral-900);margin-bottom:var(--spacing-3xl);letter-spacing:-.02em;text-align:center}.form{max-width:100%}.form .form-group{margin-bottom:var(--spacing-xl)}.form .form-group label{display:block;font-weight:600;color:var(--neutral-700);margin-bottom:var(--spacing-sm);font-size:14px}.form .form-group input{width:100%;padding:var(--spacing-md);border:1px solid var(--neutral-300);border-radius:var(--radius-md);font-size:16px;transition:all .15s ease;background:#fff;color:var(--neutral-800);height:44px}.form .form-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #6366f11a}.form .form-group input:hover{border-color:var(--neutral-400)}.form .form-actions{margin-top:var(--spacing-3xl);display:flex;justify-content:center}.form .form-actions .btn{min-width:120px}.form .error-messages{margin-bottom:var(--spacing-xl)}.form .error-messages h4{color:var(--error-text);font-size:14px;font-weight:600;margin-bottom:var(--spacing-sm);text-transform:capitalize}.auth-container p{text-align:center;margin-top:var(--spacing-3xl);color:var(--neutral-600)}.auth-container p a{color:var(--primary-color);text-decoration:none;font-weight:500}.auth-container p a:hover{text-decoration:underline}.settings-container h2{font-size:20px;font-weight:600;color:var(--neutral-800);margin-bottom:var(--spacing-xl);margin-top:var(--spacing-4xl);letter-spacing:-.01em}.settings-container h2:first-of-type{margin-top:0}.color-btn:focus,.btn:focus{outline:2px solid var(--primary-color);outline-offset:2px}.delete-warning{color:var(--neutral-600);margin-bottom:var(--spacing-xl);line-height:1.5}.success-message{background:var(--success-bg);border:1px solid var(--success-border);border-radius:var(--radius-md);padding:var(--spacing-lg);margin-bottom:var(--spacing-xl);color:var(--success-text);font-weight:500}.field-error{color:var(--error-text);font-size:14px;margin-top:var(--spacing-sm);text-align:left}.field-error p{margin:0}.form-page .btn-full-width{height:48px;font-size:16px}.settings-container .form-actions{margin-bottom:var(--spacing-4xl)}@media (max-width: 768px){.main-prompt{font-size:28px;padding:var(--spacing-sm)}.container{padding:var(--spacing-md)}.canvas-section{padding:var(--spacing-sm)}.prompt-section{margin-bottom:var(--spacing-2xl)}.gallery-paintings-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))!important}.footer-container{flex-direction:column;gap:var(--spacing-md);text-align:center}.footer-nav{flex-wrap:wrap;justify-content:center;gap:var(--spacing-sm)}.guest-cta-card{margin:0 var(--spacing-lg);padding:var(--spacing-2xl);flex-direction:column}.guest-cta-title{font-size:20px}.guest-cta-btn{min-width:180px;font-size:14px}.profile-paintings-masonry{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-xl)}.form-page{max-width:100%;padding:var(--spacing-lg)}.form-page .section{padding:var(--spacing-xl)}}@media (max-width: 480px){.main-prompt{font-size:22px;padding:var(--spacing-xs)}.form-page h1{font-size:28px}.canvas-section{padding:var(--spacing-xs)}.paint-workspace{gap:var(--spacing-md)}.color-palette{padding:var(--spacing-md);min-width:280px}.color-btn{width:28px;height:28px}.submit-btn{flex:1;min-width:120px}.submission-actions{flex-direction:column;align-items:center}.submission-actions .btn{min-width:200px}.app-header{padding:var(--spacing-md) var(--spacing-lg)}.header-container{height:auto;gap:var(--spacing-sm)}.app-logo{font-size:18px;padding:var(--spacing-sm) var(--spacing-md)}.auth-links{gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md)}.guest-link{font-size:14px}.signup-btn{display:none}.user-dropdown-toggle{padding:var(--spacing-xs) var(--spacing-sm);font-size:13px}.user-name{max-width:60px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-dropdown-menu{right:-8px;min-width:140px}.gallery-paintings-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))!important}.app-footer{padding:var(--spacing-lg)}.footer-nav{flex-direction:column;gap:var(--spacing-xs)}.guest-cta-card{margin:0;padding:var(--spacing-xl)}.guest-cta-title{font-size:18px}.guest-cta-description{font-size:14px}.guest-cta-btn{min-width:160px;padding:var(--spacing-sm) var(--spacing-lg)}.profile-paintings-masonry{grid-template-columns:1fr;gap:var(--spacing-lg)}.form-page{padding:var(--spacing-md)}.form-page .section{padding:var(--spacing-lg)}}.content-page{max-width:800px;margin:0 auto}.content-page .section{background:#fff;border-radius:var(--radius-lg);padding:var(--spacing-3xl);border:1px solid var(--neutral-300);box-shadow:var(--shadow-sm)}.content-page .section h1{margin-bottom:var(--spacing-3xl)}.content-page h2{color:var(--neutral-900);font-size:20px;font-weight:600;margin:var(--spacing-3xl) 0 var(--spacing-lg) 0;border-bottom:1px solid var(--neutral-200);padding-bottom:var(--spacing-sm)}.content-page h2:first-of-type{margin-top:var(--spacing-2xl)}.content-page p{margin:0 0 var(--spacing-md) 0;line-height:1.6}.content-page ul{margin:0 0 var(--spacing-md) 0;padding-left:var(--spacing-2xl)}.content-page li{margin-bottom:var(--spacing-xs);line-height:1.6}.content-page code{background:var(--neutral-50);padding:2px 6px;border-radius:4px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:14px}.terms-intro{background:var(--primary-subtle);border:1px solid var(--primary-light);border-radius:var(--radius-md);padding:var(--spacing-lg);margin-bottom:var(--spacing-2xl)}.terms-intro p{margin:0}.terms-intro p+p{margin-top:var(--spacing-md)}.terms-footer{text-align:center;background:var(--neutral-50);border:1px solid var(--neutral-200);border-radius:var(--radius-md);padding:var(--spacing-lg);margin-top:var(--spacing-3xl)}.terms-footer p{margin:0;color:var(--neutral-600);font-style:italic}@media (max-width: 768px){.content-page .section{padding:var(--spacing-2xl)}.content-page h2{font-size:18px}}.painting-detail-page{padding:var(--spacing-4xl) var(--spacing-2xl);max-width:800px;margin:0 auto}.painting-display{display:flex;justify-content:center;margin-bottom:var(--spacing-4xl)}.painting-detail-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--neutral-300);max-width:600px;width:100%;overflow:hidden;box-shadow:none;transition:none}.painting-detail-card:hover{transform:none;box-shadow:none}.painting-info{text-align:center;max-width:500px;margin:0 auto}.painting-title{font-size:1.75rem;font-weight:700;color:var(--neutral-900);margin:0 0 var(--spacing-2xl) 0;line-height:1.25;letter-spacing:-.025em}.painting-attribution{font-size:1.125rem;font-weight:500;color:var(--neutral-700);margin-bottom:var(--spacing-md)}.painting-date{font-size:1rem;color:var(--neutral-500);margin-bottom:var(--spacing-4xl);font-weight:400}.painting-actions{display:flex;justify-content:center;margin-bottom:var(--spacing-4xl)}.painting-navigation{display:flex;gap:var(--spacing-xl);justify-content:center;flex-wrap:wrap;padding-top:var(--spacing-4xl);border-top:1px solid var(--neutral-200)}.painting-navigation .btn{min-width:140px;font-weight:500}.download-btn{font-weight:600;padding:var(--spacing-md) var(--spacing-2xl);min-width:140px}@media (min-width: 768px){.painting-detail-page{padding:var(--spacing-4xl) var(--spacing-3xl)}.painting-navigation{justify-content:space-between}}@media (max-width: 767px){.painting-detail-page{padding:var(--spacing-3xl) var(--spacing-lg)}.painting-title{font-size:1.5rem}.painting-navigation .btn{min-width:120px}}