:root{--bg-primary: #ffffff;--bg-secondary: #fafbfc;--bg-tertiary: #f8f9fa;--bg-accent: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--bg-card: #ffffff;--bg-hover: rgba(102, 126, 234, .08);--text-primary: #1a202c;--text-secondary: #4a5568;--text-muted: #718096;--text-inverse: #ffffff;--border-color: rgba(0, 0, 0, .08);--border-light: rgba(0, 0, 0, .05);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 40px rgba(0, 0, 0, .15);--shadow-2xl: 0 25px 50px rgba(0, 0, 0, .25);--gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);--gradient-success: linear-gradient(135deg, #13a10e 0%, #107c10 100%);--gradient-hover: linear-gradient(135deg, #764ba2 0%, #667eea 100%);--accent-color: #667eea;--accent-hover: #764ba2}[data-theme=dark]{--bg-primary: #0f0f23;--bg-secondary: #1a1a2e;--bg-tertiary: 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.theme-icon{transform:rotate(180deg)}.main{flex:1;background:var(--bg-secondary);padding:3rem 0;position:relative}.container{max-width:1200px;margin:0 auto;padding:0 2rem;width:100%}.modern-grid{display:flex;flex-direction:column;gap:2rem;margin-bottom:2rem;max-width:800px;margin-left:auto;margin-right:auto;align-items:center}@media (min-width: 768px){.modern-grid{flex-direction:row;max-width:1000px;justify-content:center;flex-wrap:wrap}.modern-grid .premium-card{flex:0 1 calc(50% - 1rem);max-width:500px}}.premium-card{background:var(--bg-card);border-radius:20px;border:1px solid var(--border-color);box-shadow:var(--shadow-lg);transition:all .4s cubic-bezier(.175,.885,.32,1.275);position:relative;overflow:hidden}.premium-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-primary);transform:scaleX(0);transition:transform .3s ease}.premium-card:hover:before{transform:scaleX(1)}.premium-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-2xl)}.generator-card{padding:2.5rem}.result-card{padding:2.5rem;display:none}.card-header{text-align:center;margin-bottom:2rem}.card-header h2,.card-header h3{font-size:2rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem;letter-spacing:-.5px}.card-header p{color:var(--text-secondary);font-size:1.1rem;font-weight:400}.type-selector{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:2rem}.type-btn{background:var(--bg-tertiary);border:2px solid var(--border-color);padding:1.5rem 1rem;cursor:pointer;transition:all .3s 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0}.qr-wrapper{background:var(--bg-card);border-radius:20px;padding:2.5rem;box-shadow:var(--shadow-xl);display:inline-block;position:relative;overflow:hidden}.qr-wrapper:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:var(--gradient-primary);opacity:.05;animation:rotate 10s linear infinite}@keyframes rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}#qrCanvas{display:block;max-width:100%;height:auto;position:relative;z-index:1}.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-bottom:2rem}.download-btn{background:var(--bg-tertiary);border:2px solid var(--border-color);padding:1.25rem 1rem;cursor:pointer;transition:all .3s 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ease;text-transform:uppercase;letter-spacing:1px;border-radius:12px;position:relative;overflow:hidden}.secondary-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:var(--gradient-primary);transition:left .5s ease;z-index:0}.secondary-btn:hover:before{left:0}.secondary-btn:hover{color:var(--text-inverse);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.secondary-btn span{position:relative;z-index:1}.footer{background:var(--bg-card);border-top:1px solid var(--border-color);padding:2rem 0;text-align:center}.footer-content{max-width:1200px;margin:0 auto;padding:0 2rem}.footer-content p{color:var(--text-secondary);font-weight:500;font-size:1rem;margin-bottom:1rem}.footer-links{display:flex;justify-content:center;gap:1rem}.github-link{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;background:var(--bg-tertiary);border:2px solid var(--border-color);border-radius:12px;color:var(--text-secondary);transition:all .3s cubic-bezier(.175,.885,.32,1.275);position:relative;overflow:hidden}.github-link:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:var(--gradient-primary);opacity:0;transition:opacity .3s ease;z-index:0}.github-link:hover:before{opacity:.1}.github-link:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--accent-color);color:var(--accent-color)}.github-link svg{position:relative;z-index:1;transition:transform .3s ease}.github-link:hover svg{transform:scale(1.1)}@media (max-width: 768px){.modern-grid{flex-direction:column;gap:1.5rem;max-width:600px}.modern-grid .premium-card{flex:1;max-width:100%}.type-selector,.download-grid{grid-template-columns:1fr}.container{padding:0 1rem}.generator-card,.result-card{padding:2rem}.header-content{padding:1rem}.main{padding:2rem 0}}@media (max-width: 480px){.generator-card,.result-card{padding:1.5rem}.card-header h2,.card-header h3{font-size:1.5rem}.qr-wrapper{padding:1.5rem}.type-btn{padding:1.25rem 1rem}.type-icon{font-size:2rem}.logo{font-size:1.5rem}.theme-toggle{width:50px;height:50px}}.fade-in{animation:fadeIn .5s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.slide-up{animation:slideUp .5s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.hidden{display:none!important}.loading{pointer-events:none;opacity:.6}.text-center{text-align:center}.premium-btn:focus,.type-btn:focus,.download-btn:focus,.secondary-btn:focus{outline:none;box-shadow:0 0 0 4px #667eea4d}.success-message{background:var(--gradient-success);color:var(--text-inverse);padding:1.25rem 2rem;border:none;font-weight:600;border-radius:12px;box-shadow:var(--shadow-lg)}.error-message{background:linear-gradient(135deg,#f5576c,#f093fb);color:var(--text-inverse);padding:1.25rem 2rem;border:none;font-weight:600;border-radius:12px;box-shadow:var(--shadow-lg)}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--bg-secondary) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:8px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--gradient-primary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--gradient-hover)}