@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";
:root{--bg-primary:#f8fafc;--bg-secondary:#fff;--bg-tertiary:#f1f5f9;--accent-1:#2563eb;--accent-hover:#1d4ed8;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--border-color:#e2e8f0;--border-highlight:#cbd5e1;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem;--radius-full:9999px}[data-theme=dark]{--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-tertiary:#334155;--accent-1:#3b82f6;--accent-hover:#60a5fa;--text-primary:#f8fafc;--text-secondary:#cbd5e1;--text-muted:#64748b;--border-color:#334155;--border-highlight:#475569;--shadow-sm:0 1px 2px 0 #00000080;--shadow-md:0 4px 6px -1px #00000080;--shadow-lg:0 10px 15px -3px #00000080}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);flex-direction:column;min-height:100vh;font-family:Inter,sans-serif;line-height:1.6;transition:background-color .3s,color .3s;display:flex;overflow-x:hidden}a{color:inherit;text-decoration:none}.app-container{flex-direction:column;flex:1;gap:2rem;width:100%;max-width:1400px;margin:0 auto;padding:2rem 1.5rem;display:flex}@media (max-width:768px){.app-container{gap:1.5rem;padding:1.5rem 1rem}}.header{text-align:center;flex-direction:column;align-items:center;width:100%;display:flex;position:relative}.theme-toggle-container{justify-content:flex-end;width:100%;margin-bottom:1rem;display:flex}.theme-toggle{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-full);cursor:pointer;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.875rem;font-weight:500;transition:all .2s;display:flex}.theme-toggle:hover{border-color:var(--accent-1)}.header h1{color:var(--text-primary);margin-bottom:1rem;font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.2}.header p{color:var(--text-secondary);max-width:700px;margin:0 auto;font-size:clamp(1rem,2vw,1.15rem);font-weight:400}.main-content{grid-template-columns:1fr;gap:2rem;width:100%;display:grid}@media (min-width:1024px){.main-content{grid-template-columns:7fr 3fr}}.panel{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);min-width:0;padding:2rem;transition:all .3s}@media (max-width:768px){.panel{padding:1.25rem}}.tabs{-webkit-overflow-scrolling:touch;scrollbar-width:none;border-bottom:2px solid var(--border-color);gap:.5rem;margin-bottom:2rem;padding-bottom:1rem;display:flex;overflow-x:auto}.tabs::-webkit-scrollbar{display:none}.tab-btn{color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-md);white-space:nowrap;background:0 0;border:none;align-items:center;gap:.5rem;padding:.75rem 1rem;font-size:.95rem;font-weight:600;transition:all .2s;display:flex}.tab-btn:hover{color:var(--text-primary);background:var(--bg-tertiary)}.tab-btn.active{color:var(--accent-1);background:var(--bg-tertiary)}.form-group{margin-bottom:1.5rem}.form-label{color:var(--text-primary);align-items:center;margin-bottom:.5rem;font-size:.9rem;font-weight:600;display:flex}.form-input{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;color:var(--text-primary);padding:.875rem 1rem;font-family:inherit;font-size:1rem;transition:all .2s}.form-input:hover{border-color:var(--border-highlight)}.form-input:focus{border-color:var(--accent-1);outline:none;box-shadow:0 0 0 3px #2563eb1a}textarea.form-input{resize:vertical;min-height:120px}.color-picker-group{background:var(--bg-primary);border-radius:var(--radius-md);border:1px solid var(--border-color);cursor:pointer;align-items:center;gap:1rem;padding:.75rem;transition:all .2s;display:flex}.color-picker-group:hover{border-color:var(--accent-1);background:#2563eb08}.color-picker-group .form-label{cursor:pointer;width:100%}.color-input{appearance:none;cursor:pointer;background-color:#0000;border:none;width:40px;height:40px;padding:0}.color-input::-webkit-color-swatch{border-radius:var(--radius-md);border:2px solid var(--border-color)}.color-input::-moz-color-swatch{border-radius:var(--radius-md);border:2px solid var(--border-color)}.accordion{flex-direction:column;gap:1rem;display:flex}.accordion-item{border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-primary);overflow:hidden}.accordion-header{width:100%;color:var(--text-primary);text-align:left;cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;font-size:1.05rem;font-weight:600;display:flex}.accordion-header .icon-wrap{color:var(--text-secondary);display:flex}.accordion-header .toggle-icon{color:var(--text-secondary);font-size:1.5rem;font-weight:300;transition:transform .3s}.accordion-item.is-open{border-color:var(--accent-1)}.accordion-item.is-open .accordion-header .icon-wrap{color:var(--accent-1)}.accordion-item.is-open .toggle-icon{color:var(--accent-1);transform:rotate(45deg)}.accordion-content{opacity:0;max-height:0;padding:0 1.5rem;transition:all .3s;overflow:hidden}.accordion-content.open{opacity:1;max-height:2000px;padding:0 1.5rem 1.5rem}.btn{border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;gap:.5rem;padding:.875rem 1.5rem;font-family:inherit;font-size:1rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background:var(--accent-1);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--border-color)}.btn-full{width:100%}.flex{display:flex}.items-center{align-items:center}.gap-2{gap:.5rem}.mt-4{margin-top:1rem}.preview-container{flex-direction:column;align-items:center;gap:1.5rem;display:flex;position:sticky;top:1.5rem}.qr-wrapper{border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);aspect-ratio:1;background:#fff;justify-content:center;align-items:center;width:100%;max-width:320px;margin:0 auto;padding:1rem;display:flex;overflow:hidden}.qr-wrapper canvas,.qr-wrapper svg{max-width:100%;height:auto}.download-options{grid-template-columns:1fr 1fr;gap:.75rem;width:100%;display:grid}@media (max-width:480px){.download-options{grid-template-columns:1fr}}.range-slider{-webkit-appearance:none;background:var(--border-color);border-radius:var(--radius-full);outline:none;width:100%;height:6px}.range-slider::-webkit-slider-thumb{appearance:none;background:var(--accent-1);cursor:pointer;border-radius:50%;width:20px;height:20px}.footer{text-align:center;color:var(--text-muted);border-top:1px solid var(--border-color);margin-top:3rem;padding:2rem}.options-grid{grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:.75rem;display:grid}.option-box{border:2px solid var(--border-color);border-radius:var(--radius-md);text-align:center;cursor:pointer;color:var(--text-secondary);background:var(--bg-primary);justify-content:center;align-items:center;padding:.75rem;transition:all .2s;display:flex}.option-box:hover{border-color:var(--border-highlight)}.option-box.active{border-color:var(--accent-1);color:var(--accent-1);background:#2563eb0d}.file-upload{display:inline-flex;position:relative;overflow:hidden}.file-upload input[type=file]{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;top:0;left:0}.seo-content{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin-top:4rem;padding:3rem}@media (max-width:768px){.seo-content{padding:1.5rem}}.seo-content h2,.seo-content h3{color:var(--text-primary);margin-bottom:1rem}.seo-content h2{text-align:center;font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700}.subtitle{text-align:center;color:var(--text-secondary);max-width:800px;margin:0 auto 3rem;font-size:1.1rem}.seo-grid{grid-template-columns:1fr;gap:2rem;margin-bottom:3rem;display:grid}@media (min-width:900px){.seo-grid{grid-template-columns:1fr 1fr}}.seo-card{background:var(--bg-primary);border-radius:var(--radius-md);border:1px solid var(--border-color);padding:2rem}.seo-card ol{color:var(--text-secondary);padding-left:1.5rem}.seo-card ol li{margin-bottom:1rem}.seo-card ol li strong{color:var(--text-primary)}.seo-card p{color:var(--text-secondary);line-height:1.6}.seo-card p strong{color:var(--text-primary)}.seo-benefits h3{text-align:center;margin-bottom:2rem;font-size:1.75rem}.benefits-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;padding:0;list-style:none;display:grid}.benefits-grid li{background:var(--bg-primary);border-radius:var(--radius-md);border:1px solid var(--border-color);text-align:center;padding:1.5rem}.benefits-grid li strong{color:var(--accent-1);margin-bottom:.75rem;font-size:1.25rem;font-weight:600;display:block}.benefits-grid li span{color:var(--text-secondary);font-size:.95rem;line-height:1.5;display:block}.two-column-layout{grid-template-columns:1fr;gap:2rem;display:grid}.two-column-layout>div{min-width:0}@media (min-width:640px){.two-column-layout{grid-template-columns:1fr 1fr}}.drag-drop-area{border:2px dashed var(--border-color);border-radius:var(--radius-md);text-align:center;cursor:pointer;color:var(--text-secondary);background:var(--bg-primary);flex-direction:column;justify-content:center;align-items:center;gap:1rem;height:100%;min-height:180px;padding:2rem 1.5rem;transition:all .2s;display:flex;position:relative;overflow:hidden}.drag-drop-area:hover,.drag-drop-area.drag-active{border-color:var(--accent-1);color:var(--accent-1);background:#2563eb0d}.drag-drop-input{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;top:0;left:0}.mb-2{margin-bottom:.5rem}.recommended-colors{flex-wrap:wrap;gap:.75rem;display:flex}.color-square{border-radius:var(--radius-sm);cursor:pointer;border:1px solid #00000026;width:36px;height:36px;transition:transform .2s,box-shadow .2s}.color-square:hover{box-shadow:var(--shadow-sm);transform:scale(1.1)}[data-theme=dark] .color-square{border-color:#fff3}