:root{--primary: #667eea;--primary-dark: #5568d3;--secondary: #764ba2;--success: #10b981;--danger: #ef4444;--warning: #f59e0b;--bg-body: #f8f9fa;--bg-card: #ffffff;--text-main: #1f2937;--text-muted: #6b7280;--border: #e5e7eb;--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1)}[data-theme=dark]{--bg-body: #1f2937;--bg-card: #374151;--text-main: #f9fafb;--text-muted: #d1d5db;--border: #4b5563}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg-body);color:var(--text-main);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.navbar{background:var(--bg-card);border-bottom:1px solid var(--border);padding:1rem 0;box-shadow:var(--shadow)}.navbar .container{display:flex;justify-content:space-between;align-items:center}.nav-brand{display:flex;align-items:center;gap:.5rem;font-size:1.5rem;font-weight:700}.logo{font-size:2rem}.nav-menu{display:flex;align-items:center;gap:1.5rem}.nav-link{color:var(--text-main);text-decoration:none;font-weight:500;transition:color .2s}.nav-link:hover{color:var(--primary)}.nav-user{color:var(--text-muted);font-size:.875rem}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.page-header h1{margin:0}.hero{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;padding:4rem 0;text-align:center}.hero-title{font-size:3rem;margin-bottom:1rem;font-weight:800}.hero-subtitle{font-size:1.25rem;opacity:.9}.main-content{flex:1}.qr-form{background:var(--bg-card);border-radius:12px;padding:2rem;box-shadow:var(--shadow-lg);margin-bottom:2rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--text-main)}.form-control{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:8px;font-size:1rem;background:var(--bg-body);color:var(--text-main);transition:border-color .2s}.form-control:focus{outline:none;border-color:var(--primary)}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.form-select{display:block;width:100%;padding:.75rem 2.25rem .75rem .75rem;font-size:1rem;font-weight:400;line-height:1.5;color:var(--text-main);background-color:var(--bg-body);background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right .75rem center;background-size:16px 12px;border:1px solid var(--border);border-radius:8px;appearance:none;transition:border-color .2s,box-shadow .2s}.form-select:focus{border-color:var(--primary);outline:0;box-shadow:0 0 0 .25rem #667eea40}.btn{display:inline-block;padding:.75rem 1.5rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;text-decoration:none;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}.btn-secondary{background:var(--text-muted);color:#fff}.btn-secondary:hover{background:var(--text-main)}.btn-sm{padding:.5rem 1rem;font-size:.875rem}.form-actions{display:flex;gap:1rem;margin-top:2rem}.qr-preview{background:#fff;border:2px solid var(--border);border-radius:12px;padding:2rem;display:flex;justify-content:center;align-items:center;min-height:300px}#qr-canvas{max-width:100%;height:auto}.qr-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.5rem;margin-top:1.5rem}.qr-card{background:var(--bg-card);border-radius:12px;overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column;height:450px}.qr-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.qr-card-image{background:#fff;padding:1rem;display:flex;justify-content:center;align-items:center}.qr-card-image img{max-width:100%;height:auto}.qr-card-content{padding:1rem}.qr-card-header{height:90px;padding:1rem 1.5rem;display:flex;align-items:center;border-bottom:1px solid var(--border);flex-shrink:0}.qr-card-body{flex:1;padding:1rem;display:flex;justify-content:center;align-items:center;overflow:hidden;background:#fff}.qr-image-wrapper{display:flex;justify-content:center;align-items:center;width:100%;height:100%}.qr-image-wrapper img{max-width:100%;max-height:100%;object-fit:contain}.qr-card-title{font-size:1.125rem;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}.qr-card-title a{text-decoration:none;color:inherit}.qr-type-icon{font-size:1.5rem;margin-right:.75rem}.qr-card-actions{display:flex;gap:.5rem}.theme-toggle{background:none;border:none;font-size:1.5rem;cursor:pointer;padding:.5rem;border-radius:50%;transition:background .2s}.theme-toggle:hover{background:var(--bg-body)}.footer{background:var(--bg-card);border-top:1px solid var(--border);padding:2rem 0;text-align:center;color:var(--text-muted);margin-top:auto}.quick-generator,.recent-qrs,.customization-section,.preview-section{margin-bottom:2rem}.quick-generator h2,.recent-qrs h2{font-size:2rem;margin-bottom:1.5rem}.customization-section h3,.preview-section h3{font-size:1.25rem;margin-bottom:1rem;color:var(--text-main)}@media (max-width: 768px){.footer,.qr-card-footer{display:none}.container{padding:0 1rem;width:100%}.hero-title{font-size:2rem}.navbar .container{flex-direction:column;gap:1rem}.nav-brand{margin-bottom:.5rem}.nav-menu{gap:1rem;font-size:.9rem;width:100%;justify-content:center;flex-wrap:wrap}.page-header{flex-direction:column;align-items:stretch;gap:1rem;text-align:center}.page-header h1{font-size:1.75rem}.page-header .btn{width:100%}.qr-form{padding:1.25rem}.qr-preview{padding:1rem;min-height:auto}.form-row{grid-template-columns:1fr}.form-actions{flex-direction:column}.btn{width:100%;display:block;text-align:center;margin-bottom:.5rem}.navbar{position:sticky;top:0;z-index:1000;height:72px;display:flex;align-items:center}.main-content{padding:0}.nav-brand{margin-bottom:0;width:100%;justify-content:center;padding-bottom:.5rem}.nav-menu{display:none}.qr-grid{display:flex;flex-direction:column;gap:0;height:calc(100dvh - 72px);padding:0;margin:0;overflow-y:scroll;scroll-snap-type:y mandatory;scrollbar-width:none}.qr-grid::-webkit-scrollbar{display:none}.mobile-top-actions{position:fixed;top:15px;right:15px;z-index:2000}.mobile-menu-trigger{background:none;border:none;font-size:1.75rem;line-height:1;color:var(--text-main);cursor:pointer;padding:.5rem}.mobile-menu-dropdown{position:absolute;top:100%;right:0;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;box-shadow:0 10px 25px #0003;display:flex;flex-direction:column;min-width:200px;z-index:2001;overflow:hidden}.mobile-menu-dropdown.hidden{display:none}.mobile-menu-item{padding:1rem;text-decoration:none;color:var(--text-main);background:none;border:none;text-align:left;font-size:1rem;border-bottom:1px solid var(--border);cursor:pointer;font-weight:500}.mobile-menu-item:hover,.mobile-menu-item:active{background:var(--bg-body)}.qr-sidebar{position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--bg-card);z-index:1100;transform:translate(-100%);transition:transform .3s ease;display:flex;flex-direction:column;box-shadow:2px 0 10px #0000001a}.qr-sidebar.open{transform:translate(0)}.sidebar-overlay{position:fixed;inset:0;background:#00000080;z-index:1050;opacity:0;pointer-events:none;transition:opacity .3s}.sidebar-overlay.open{opacity:1;pointer-events:auto}.sidebar-header{padding:1rem;border-bottom:1px solid var(--border);font-weight:700;display:flex;justify-content:space-between;align-items:center}.sidebar-content{overflow-y:auto;flex:1;padding-top:0}.sidebar-type-heading{font-size:.75rem;font-weight:700;text-transform:uppercase;color:var(--text-muted);padding:1.25rem 1rem .5rem;background:var(--bg-card);letter-spacing:.05em;position:sticky;top:0;z-index:1}.sidebar-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:8px;color:var(--text-main);text-decoration:none;margin-bottom:.25rem;transition:background-color .2s}.sidebar-icon{font-size:1.2rem;min-width:24px;text-align:center}.sidebar-text{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-item:hover,.sidebar-item:active{background:var(--bg-body)}.sidebar-toggle{position:fixed;bottom:20px;left:20px;width:50px;height:50px;border-radius:25px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;z-index:998;box-shadow:var(--shadow-lg);border:none}.qr-card{flex:0 0 100%;height:100%;scroll-snap-align:start;scroll-snap-stop:always;border-radius:0;box-shadow:none;border-bottom:1px solid var(--border);margin:0;padding:0;box-sizing:border-box;display:flex;flex-direction:column;justify-content:center;background:var(--bg-card)}.qr-card:first-child{padding-top:0}.qr-card-header{padding:.75rem 1.5rem .25rem;background:var(--bg-card);border-bottom:none;flex:0 0 auto;display:flex;flex-direction:row;align-items:center;justify-content:center;text-align:center;gap:.25rem}.qr-card-title{font-size:2rem;font-weight:800;margin:0;white-space:normal;overflow:visible;text-overflow:clip;flex:none}.qr-type-icon{font-size:2rem;margin:0}.qr-card-body{flex:0 0 auto;margin-top:.5rem;padding:0;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#fff}.qr-image-wrapper img{max-height:90%;width:auto;max-width:95%;object-fit:contain}.qr-card-footer{padding:1.5rem;padding-bottom:110px;background:var(--bg-card);border-top:none}}.color-grid{display:grid;grid-template-columns:1fr;gap:.75rem;margin-bottom:1rem}.color-pair{background:var(--bg-body);padding:.75rem;border-radius:8px;border:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px;transition:border-color .2s}.color-pair:hover{border-color:var(--primary)}.color-pair label{flex:1;margin:0;font-size:.95rem;font-weight:500;color:var(--text-main);cursor:pointer}.color-inputs{display:flex;gap:.5rem}.color-input-wrapper{display:flex;flex-direction:column;align-items:center;position:relative}.color-input-wrapper input[type=color]{width:42px;height:42px;padding:0;border:2px solid var(--bg-card);border-radius:8px;cursor:pointer;background:none;box-shadow:0 0 0 1px var(--border);transition:transform .2s,box-shadow .2s;-webkit-appearance:none}.color-input-wrapper input[type=color]::-webkit-color-swatch-wrapper{padding:0}.color-input-wrapper input[type=color]::-webkit-color-swatch{border:none;border-radius:6px}.color-input-wrapper input[type=color]:hover{transform:scale(1.05)}.color-input-wrapper input[type=color]:focus{outline:none;box-shadow:0 0 0 2px var(--primary)}.qr-layout-grid{display:grid;grid-template-columns:1fr;gap:2rem;align-items:start}@media (min-width: 900px){.qr-layout-grid{grid-template-columns:1fr 1fr}.scrollable-column{height:calc(100vh - 140px);overflow-y:auto;padding-right:1rem;scrollbar-width:thin;scrollbar-color:var(--text-muted) transparent}.scrollable-column::-webkit-scrollbar{width:6px}.scrollable-column::-webkit-scrollbar-track{background:transparent}.scrollable-column::-webkit-scrollbar-thumb{background-color:var(--text-muted);border-radius:20px}.sticky-column{position:sticky;top:20px;z-index:10}}.card{background:var(--bg-card);border-radius:var(--radius-lg, 12px);box-shadow:var(--shadow-sm, 0 1px 3px rgba(0,0,0,.1));border:1px solid var(--border-color, #e2e8f0)}.scrollable-column .card,.sticky-column .card{padding:2rem!important}.row{display:flex;flex-wrap:wrap;margin-right:-.5rem;margin-left:-.5rem}.g-2{gap:.5rem}.mb-3{margin-bottom:1rem!important}.col-6{flex:0 0 auto;width:50%;padding-right:.5rem;padding-left:.5rem}.w-100{width:100%!important}.mobile-bottom-nav,.mobile-menu-overlay{display:none}@media (max-width: 768px){.nav-menu{display:none!important}body{padding-bottom:80px}.mobile-bottom-nav{display:flex;position:fixed;bottom:0;left:0;width:100%;height:65px;background:var(--bg-card);border-top:1px solid var(--border);justify-content:space-around;align-items:center;z-index:1000;padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -2px 10px #0000000d}.mobile-nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;text-decoration:none;color:var(--text-muted);font-size:.75rem;background:none;border:none;padding:.5rem;flex:1;cursor:pointer;transition:color .2s}.mobile-nav-item.active{color:var(--primary)}.nav-icon{font-size:1.5rem;margin-bottom:2px}.nav-item-create{position:relative;top:-20px}.nav-icon-create{width:50px;height:50px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.75rem;box-shadow:0 4px 10px #667eea66;transition:transform .2s}.nav-item-create:active .nav-icon-create{transform:scale(.95)}.mobile-menu-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:2000;justify-content:flex-end;align-items:flex-end;display:none;opacity:0;transition:opacity .3s ease}.mobile-menu-overlay.active{opacity:1}.mobile-menu-content{width:100%;background:var(--bg-card);border-radius:20px 20px 0 0;padding:1.5rem;padding-bottom:calc(1.5rem + env(safe-area-inset-bottom));transform:translateY(100%);transition:transform .3s cubic-bezier(.16,1,.3,1);max-height:80vh;overflow-y:auto}.mobile-menu-overlay.active .mobile-menu-content{transform:translateY(0)}.mobile-menu-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;border-bottom:1px solid var(--border);padding-bottom:1rem}.mobile-menu-header h3{margin:0;font-size:1.25rem}.close-menu-btn{background:none;border:none;font-size:2rem;line-height:1;cursor:pointer;color:var(--text-muted)}.mobile-menu-list{display:flex;flex-direction:column;gap:.5rem}.user-profile-summary{display:flex;align-items:center;gap:1rem;padding:1rem;background:var(--bg-body);border-radius:12px;margin-bottom:1rem}.user-avatar-placeholder{width:40px;height:40px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem}.user-info{display:flex;flex-direction:column}.user-name{font-weight:700;font-size:1rem}.user-balance{color:var(--text-muted);font-size:.9rem}.menu-item{display:flex;align-items:center;gap:1rem;padding:1rem;text-decoration:none;color:var(--text-main);background:none;border:none;font-size:1rem;border-radius:8px;transition:background .2s;width:100%;text-align:left}.menu-item:hover,.menu-item:active{background:var(--bg-body)}.menu-item .icon{font-size:1.2rem;width:24px;text-align:center}.text-danger{color:var(--danger)}}