:root{--primary-blue: #2563eb;--primary-blue-hover: #1d4ed8;--primary-blue-light: #eff6ff;--primary-pink: #ec4899;--primary-pink-hover: #db2777;--primary-pink-light: #fdf2f8;--gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-pink) 100%);--gradient-subtle: linear-gradient(135deg, rgba(37, 99, 235, .05) 0%, rgba(236, 72, 153, .05) 100%);--bg-color: #fafbff;--surface-color: #ffffff;--text-color: #0f172a;--text-secondary: #64748b;--text-muted: #94a3b8;--border-color: #e1e7f3;--border-light: #f1f5f9;--shadow-sm: 0 1px 3px 0 rgba(37, 99, 235, .08);--shadow-md: 0 4px 12px 0 rgba(37, 99, 235, .12);--shadow-lg: 0 8px 24px 0 rgba(37, 99, 235, .15);--shadow-xl: 0 16px 40px 0 rgba(37, 99, 235, .18);--radius-sm: 6px;--radius: 12px;--radius-lg: 16px;--radius-xl: 24px;--transition: all .3s cubic-bezier(.4, 0, .2, 1);--transition-fast: all .15s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-color);background-image:radial-gradient(circle at 20% 50%,rgba(37,99,235,.03) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(236,72,153,.03) 0%,transparent 50%);color:var(--text-color);line-height:1.6;min-height:100vh;font-weight:400;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container,.features-container{max-width:900px;margin:0 auto;padding:60px 24px}.features-container{padding:0 24px 60px}.background-banner{position:absolute;top:0;left:0;right:0;height:100%;z-index:-1;background:linear-gradient(180deg,#fff0,#ffffffb3 60%,#fafbff),linear-gradient(135deg,transparent 35%,rgba(37,99,235,.03) 35%,rgba(37,99,235,.03) 45%,transparent 45%),linear-gradient(45deg,transparent 35%,rgba(236,72,153,.02) 35%,rgba(236,72,153,.02) 45%,transparent 45%),radial-gradient(circle at 50% 50%,rgba(37,99,235,.04) 1px,transparent 1px),radial-gradient(circle at 25% 25%,rgba(236,72,153,.02) 2px,transparent 2px),radial-gradient(circle at 75% 75%,rgba(37,99,235,.02) 2px,transparent 2px),linear-gradient(135deg,#2563eb08,#8b5cf605,#ec489908,#2563eb05,#ec489903);background-size:100% 100%,60px 60px,60px 60px,40px 40px,80px 80px,80px 80px,100% 100%;background-position:0 0,0 0,30px 30px,0 0,0 0,40px 40px,0 0;border-radius:0 0 var(--radius-xl) var(--radius-xl);overflow:hidden}.background-banner:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 20%,rgba(37,99,235,.05) 0%,transparent 50%),radial-gradient(circle at 80% 60%,rgba(236,72,153,.04) 0%,transparent 50%),radial-gradient(circle at 40% 80%,rgba(139,92,246,.03) 0%,transparent 50%);pointer-events:none;z-index:0}header{position:relative;z-index:1}@media (max-width: 768px){.background-banner{height:300px;background-size:100% 100%,40px 40px,40px 40px,30px 30px,60px 60px,60px 60px,100% 100%}}@media (max-width: 480px){.background-banner{height:250px;background-size:100% 100%,30px 30px,30px 30px,20px 20px,40px 40px,40px 40px,100% 100%}}header{position:relative;text-align:center;margin-bottom:60px}.header-login-btn{background:var(--surface-color);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:var(--radius);padding:7px 16px;font-size:.85rem;font-weight:500;font-family:inherit;cursor:pointer;transition:var(--transition-fast);box-shadow:var(--shadow-sm);white-space:nowrap}.header-login-btn:hover{color:var(--primary-blue);border-color:var(--primary-blue);background:var(--primary-blue-light)}header .header-auth-area{position:absolute;top:0;right:0;display:flex;align-items:center;gap:8px}.header-pro-link{color:var(--primary-blue);font-size:.85rem;font-weight:600;font-family:inherit;text-decoration:none;padding:7px 14px;border-radius:var(--radius);background:var(--primary-blue-light);border:1px solid transparent;transition:var(--transition-fast);white-space:nowrap}.header-pro-link:hover{border-color:var(--primary-blue);background:color-mix(in srgb,var(--primary-blue) 12%,transparent)}@media (max-width: 480px){.header-pro-link{display:none}}@media (max-width: 768px){body{padding-top:56px}header{display:flex;flex-direction:column;align-items:center;z-index:1000}header .header-auth-area{position:fixed;top:0;left:0;right:0;z-index:200;justify-content:center;width:auto;margin-bottom:0;padding:10px 16px;background:var(--surface-color);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm)}}.header-account-wrapper{position:relative;display:none}.header-account-btn{display:flex;align-items:center;gap:7px;background:var(--surface-color);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:var(--radius);padding:6px 12px 6px 8px;font-size:.85rem;font-weight:500;font-family:inherit;cursor:pointer;transition:var(--transition-fast);box-shadow:var(--shadow-sm)}.header-account-btn:hover,.header-account-btn.open{color:var(--primary-blue);border-color:var(--primary-blue);background:var(--primary-blue-light)}.account-avatar{width:22px;height:22px;border-radius:50%;background:var(--gradient-primary);color:#fff;font-size:.65rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;text-transform:uppercase}.account-label{max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-chevron{font-size:.65rem;flex-shrink:0;transition:transform .2s ease}.header-account-btn.open .account-chevron{transform:rotate(180deg)}.account-dropdown{position:absolute;top:calc(100% + 6px);right:0;min-width:215px;background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:6px 0;z-index:200;display:none;text-align:left}.header-account-btn.open+.account-dropdown{display:block}.account-dropdown-email{padding:8px 14px 10px;font-size:.78rem;color:var(--text-muted);border-bottom:1px solid var(--border-light);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-dropdown-divider{height:1px;background:var(--border-light);margin:4px 0}.account-dropdown-item{display:block;width:100%;padding:8px 14px;font-size:.85rem;color:var(--text-color);font-weight:500;font-family:inherit;text-decoration:none;background:none;border:none;cursor:pointer;text-align:left;transition:var(--transition-fast);white-space:nowrap}.account-dropdown-item:hover{background:var(--primary-blue-light);color:var(--primary-blue)}.account-dropdown-item.account-dropdown-signout{color:var(--text-secondary)}.account-dropdown-item.account-dropdown-purchase{color:#ec4899;font-weight:600}.account-dropdown-item.account-dropdown-purchase:hover{background:#fdf2f8;color:#be185d}@media (max-width: 480px){.account-label{display:none}}.pro-restore-login-btn{background:none;border:none;font:inherit;font-weight:600;color:var(--primary-blue);cursor:pointer;padding:0;text-decoration:underline}.pro-restore-login-btn:hover{color:var(--primary-blue-hover)}.pro-page-header-nav{display:flex;align-items:center;justify-content:space-between;width:100%}h1{font-weight:700;font-size:clamp(2.5rem,5vw,3.5rem);margin-bottom:16px;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.025em}.logo-image{margin:0 auto -25px;max-width:125px;position:relative}.logo-image svg{position:relative;filter:drop-shadow(2px 4px 8px rgba(31,5,1,.15));transition:none}.logo-image svg *{fill:#2563eb;animation:colorShift 8s ease-in-out infinite}@keyframes colorShift{0%{fill:#2563eb}50%{fill:#ec4899}to{fill:#2563eb}}.logo{font-size:clamp(2.5rem,5vw,3.8rem);background:linear-gradient(135deg,var(--primary-blue) 0%,rgba(139,92,246,1) 30%,var(--primary-pink) 70%,#ff6b9d 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;position:relative;display:inline-block;font-family:Cal Sans,sans-serif;font-weight:600;font-style:normal;letter-spacing:3px;margin-top:5px;text-rendering:optimizeLegibility;text-transform:uppercase;transition:var(--transition);cursor:default}.logo:hover{transform:translateY(-2px) scale(1.02);filter:brightness(1.1)}@media (max-width: 768px){.logo{font-size:clamp(2rem,6vw,3rem)}}@media (max-width: 480px){.logo{font-size:clamp(1.8rem,7vw,2.5rem)}}.page-title{color:var(--text-color);font-family:Cal Sans,sans-serif;font-weight:400;font-size:clamp(1.25rem,3vw,1.6rem);max-width:640px;margin:-20px auto 6px;line-height:1.3;letter-spacing:.2px}.subtitle{color:#2563eba8;font-weight:400;font-size:clamp(.95rem,2.2vw,.8rem);max-width:500px;margin:0 auto;line-height:1.5}@media (max-width: 768px){.subtitle{max-width:350px}}.upload-container{margin:50px 0;display:flex;justify-content:center}input[type=file]{width:.1px;height:.1px;opacity:0;overflow:hidden;position:absolute;z-index:-1}.upload-label{display:flex;align-items:center;justify-content:center;gap:12px;background:var(--surface-color);color:var(--text-color);padding:24px 32px;border-radius:var(--radius-lg);font-weight:500;font-size:1.1rem;cursor:pointer;transition:var(--transition);border:2px dashed var(--border-color);position:relative;min-width:280px;box-shadow:var(--shadow-sm)}.upload-label:hover{background:var(--gradient-subtle);border-color:var(--primary-blue);transform:translateY(-2px);box-shadow:var(--shadow-md)}.upload-label svg{transition:var(--transition);color:var(--primary-blue)}.upload-label:hover svg{transform:scale(1.1);color:var(--primary-pink)}.upload-label.loading{pointer-events:none}.upload-label.loading:after{content:"";position:absolute;width:24px;height:24px;border:3px solid var(--border-light);border-top-color:var(--primary-blue);border-radius:50%;right:16px;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.preview-container{width:100%;margin:40px auto;border-radius:var(--radius-lg);display:flex;justify-content:center}.image-container{border:1px solid var(--border-light);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);background:var(--surface-color)}.image-container.image-active{padding:8px}img#preview{max-width:100%;max-height:500px;object-fit:contain;display:none;border-radius:var(--radius)}.error-message{background:linear-gradient(135deg,#fef2f2,#fdf2f8);color:#dc2626;padding:16px 20px;border-radius:var(--radius-lg);margin:30px 0;text-align:center;border:1px solid #fecaca;font-weight:500}.generate-button{display:block;margin:40px auto;background:var(--gradient-primary);color:#fff;border:none;padding:16px 32px;border-radius:var(--radius-lg);font-weight:600;cursor:pointer;transition:var(--transition);font-size:1.1rem;box-shadow:var(--shadow-md);position:relative;overflow:hidden}.generate-button:hover:before{left:100%}.generate-button:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}.generate-button:disabled{background:var(--text-muted);cursor:not-allowed;transform:none;box-shadow:var(--shadow-sm)}.palette-container{margin-top:50px}.swatches-container{display:flex;flex-wrap:wrap;gap:24px;justify-content:center}.color-swatch{background:var(--surface-color);border-radius:var(--radius-lg);flex:1 1 calc(33.333% - 16px);min-width:240px;max-width:280px;overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer;opacity:0;animation:fadeInUp .6s ease forwards;border:1px solid var(--border-light)}.color-swatch:hover{transform:translateY(-8px) scale(1.02);box-shadow:var(--shadow-xl)}.color-display{height:140px;width:100%;position:relative;overflow:hidden;display:flex;align-items:flex-end;justify-content:flex-start}.color-display:after{content:"";position:absolute;bottom:0;left:0;right:0;height:40%;background:linear-gradient(transparent,#00000026);pointer-events:none}.color-display-hex{position:relative;z-index:1;font-family:JetBrains Mono,Fira Code,Consolas,monospace;font-size:.8rem;font-weight:600;padding:6px 10px;opacity:0;transition:opacity .2s ease;letter-spacing:.02em}.color-swatch:hover .color-display-hex{opacity:1}.color-info{padding:14px 16px;background:var(--surface-color)}.color-hex{font-family:JetBrains Mono,Fira Code,Consolas,monospace;font-size:.9rem;color:var(--text-secondary);margin-bottom:6px;background:var(--primary-blue-light);padding:5px 8px;border-radius:var(--radius-sm);display:inline-block;transition:var(--transition-fast)}.color-rgb,.color-hsl{font-family:JetBrains Mono,Fira Code,Consolas,monospace;font-size:.75rem;color:var(--text-muted);line-height:1.6}.color-swatch:hover .color-hex{background:var(--primary-pink-light);color:var(--primary-pink)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.palette-refresh{animation:refreshPalette .6s ease}@keyframes refreshPalette{0%{opacity:.7;transform:scale(.96);filter:blur(2px)}50%{opacity:.8;transform:scale(.98);filter:blur(1px)}to{opacity:1;transform:scale(1);filter:blur(0)}}.copy-buttons-container{display:flex;gap:16px;justify-content:center;margin-top:32px;padding-top:24px;border-top:1px solid var(--border-light);flex-wrap:wrap}.copy-button{background:var(--surface-color);color:var(--text-color);border:2px solid var(--border-color);padding:12px 24px;border-radius:var(--radius-lg);font-weight:500;font-size:.95rem;cursor:pointer;transition:var(--transition);min-width:140px;position:relative;overflow:hidden}.copy-button:hover{background:var(--gradient-subtle);border-color:var(--primary-blue);transform:translateY(-2px);box-shadow:var(--shadow-md)}.copy-hex-button:hover{border-color:var(--primary-blue);color:var(--primary-blue)}.copy-rgb-button:hover{border-color:var(--primary-pink);color:var(--primary-pink)}.copy-hsl-button:hover{border-color:#8b5cf6;color:#8b5cf6}.download-button{background:var(--gradient-primary);color:#fff;border:2px solid transparent;font-size:13px;font-weight:600;min-width:200px}.download-button:hover{background:linear-gradient(135deg,var(--primary-blue-hover) 0%,var(--primary-pink-hover) 100%);border-color:transparent;transform:translateY(-2px) scale(1.02);box-shadow:var(--shadow-lg);color:#fff}.copy-button:active{transform:translateY(0);box-shadow:var(--shadow-sm)}@media (max-width: 480px){.copy-buttons-container{flex-direction:column;gap:12px}.copy-button{min-width:auto;width:100%}}@media (max-width: 768px){.container{padding:40px 16px}h1{font-size:2.5rem}.logo{font-size:35px}.logo-image{margin-bottom:-10px;max-width:75px}.page-title{margin-top:-10px}.subtitle{font-size:14px;margin-top:0}.upload-label{padding:20px 24px;min-width:250px;font-size:1rem}.swatches-container{gap:16px}.color-swatch{flex:1 1 45%;min-width:auto;max-width:none}}@media (max-width: 480px){.container{padding:30px 12px}.color-swatch{min-width:auto}.color-info{padding:16px}.upload-label{min-width:200px;padding:16px 20px}}.upload-label:focus-visible,.generate-button:focus-visible,.color-swatch:focus-visible{outline:2px solid var(--primary-blue);outline-offset:2px}.pro-badge{display:inline-block;background:var(--gradient-primary);color:#fff;font-size:.6rem;font-weight:700;letter-spacing:.08em;padding:2px 6px;border-radius:20px;vertical-align:middle;text-transform:uppercase;margin-left:6px;line-height:1.4}.color-count-container{display:flex;flex-direction:column;align-items:center;gap:10px;margin:-20px auto 36px;padding:16px 24px;background:var(--surface-color);border:1px solid var(--border-light);border-radius:var(--radius-lg);max-width:340px;box-shadow:var(--shadow-sm)}.color-count-label{display:flex;align-items:center;gap:6px;font-size:.9rem;font-weight:500;color:var(--text-color)}.color-count-value{font-family:JetBrains Mono,Fira Code,monospace;font-size:1.1rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;min-width:20px;text-align:center}#colorCountSlider{width:100%;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:4px;border-radius:2px;background:linear-gradient(to right,var(--primary-blue),var(--primary-pink));outline:none;cursor:pointer}#colorCountSlider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary-blue);cursor:pointer;border:2px solid #fff;box-shadow:0 0 0 2px var(--primary-blue);transition:var(--transition-fast)}#colorCountSlider::-webkit-slider-thumb:hover{background:var(--primary-pink);box-shadow:0 0 0 2px var(--primary-pink)}#colorCountSlider::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--primary-blue);cursor:pointer;border:2px solid #fff;box-shadow:0 0 0 2px var(--primary-blue)}.color-count-ticks{display:flex;justify-content:space-between;width:100%;font-size:.7rem;color:var(--text-muted);font-family:JetBrains Mono,monospace}.export-dropdown-wrapper{position:relative}.export-dropdown-btn{display:flex;align-items:center;gap:6px;background:var(--surface-color);border:2px solid var(--border-color);padding:12px 20px;border-radius:var(--radius-lg);font-weight:500;font-size:.95rem;cursor:pointer;transition:var(--transition);white-space:nowrap}.export-dropdown-btn:hover{border-color:var(--primary-blue);background:var(--gradient-subtle);transform:translateY(-2px);box-shadow:var(--shadow-md)}.dropdown-arrow{font-size:.75rem;transition:transform .15s ease}.export-dropdown-btn[aria-expanded=true] .dropdown-arrow{transform:rotate(180deg)}.export-dropdown-menu{display:none;position:absolute;top:calc(100% + 6px);left:0;z-index:100;background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow-lg);list-style:none;padding:6px 0;min-width:220px;animation:fadeInDown .15s ease}.export-dropdown-menu.open{display:block}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.export-dropdown-item{padding:10px 16px;font-size:.9rem;cursor:pointer;color:var(--text-color);transition:var(--transition-fast);white-space:nowrap}.export-dropdown-item:hover{background:var(--gradient-subtle);color:var(--primary-blue)}.format-toggle{display:flex;gap:0;border:2px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;align-self:center}.format-btn{background:var(--surface-color);border:none;padding:10px 18px;font-size:.85rem;font-weight:600;cursor:pointer;color:var(--text-muted);transition:var(--transition-fast);letter-spacing:.03em}.format-btn:first-child{border-right:1px solid var(--border-color)}.format-btn.active{background:var(--gradient-primary);color:#fff}.format-btn:not(.active):hover{background:var(--gradient-subtle);color:var(--text-color)}.pro-cta-banner{margin-top:28px;padding:20px 24px;background:linear-gradient(135deg,#2563eb0f,#ec48990f);border:1px dashed var(--border-color);border-radius:var(--radius-lg);animation:fadeInUp .5s ease forwards}.pro-cta-content{display:flex;align-items:center;gap:20px;flex-wrap:wrap;justify-content:space-between}.pro-cta-text strong{display:block;font-size:1rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:4px}.pro-cta-text p{font-size:.85rem;color:var(--text-secondary);margin:0;line-height:1.5}.pro-unlock-btn{display:inline-block;background:var(--gradient-primary);color:#fff;text-decoration:none;padding:12px 22px;border-radius:var(--radius-lg);font-weight:600;font-size:.95rem;white-space:nowrap;transition:var(--transition);box-shadow:var(--shadow-md);border:none;cursor:pointer}.pro-unlock-btn:hover{transform:translateY(-2px) scale(1.02);box-shadow:var(--shadow-lg);color:#fff;text-decoration:none}@media (max-width: 600px){.pro-cta-content{flex-direction:column;align-items:flex-start;gap:14px}}.contrast-grid-section{margin-top:36px;padding-top:28px;border-top:1px solid var(--border-light);animation:fadeInUp .5s ease forwards}.contrast-grid-heading{font-size:1.1rem;font-weight:600;color:var(--text-color);margin-bottom:6px;display:flex;align-items:center;gap:4px}.contrast-grid-desc{font-size:.8rem;color:var(--text-secondary);margin-bottom:16px;line-height:1.6}.contrast-grid-wrapper{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border-light);box-shadow:var(--shadow-sm)}.contrast-grid{border-collapse:collapse;min-width:100%;font-size:.72rem}.contrast-grid th,.contrast-grid td{padding:8px 10px;text-align:center;border:1px solid var(--border-light);min-width:68px}.contrast-grid th{background:var(--surface-color);font-weight:600}.grid-swatch{display:inline-block;width:20px;height:20px;border-radius:4px;border:1px solid rgba(0,0,0,.1);vertical-align:middle}.contrast-cell{font-family:JetBrains 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