:root{--primary: #6C5DD3;--primary-dark: #4A3DB5;--secondary: #FF754C;--accent: #FFCE73;--dark: #1F2128;--darker: #12141A;--light: #F5F5F5;--gray: #808191;--success: #7FBA7A;--danger: #FF6A55;--warning: #FF9F43;--steam-blue: #1B2838;--steam-dark: #171A21;--card-bg: #242731;--header-bg: #1F2128;--notification-bg: #2A2D3A}*{margin:0;padding:0;box-sizing:border-box;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}body{background-color:var(--darker);color:var(--light);min-height:100vh}.app{display:flex;flex-direction:column;min-height:100vh}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}.header{background-color:var(--header-bg);padding:16px 0;position:sticky;top:0;z-index:100;box-shadow:0 2px 10px #0003;border-bottom:1px solid rgba(255,255,255,.05)}.container{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:0 20px}.hero .container{display:flex;justify-content:space-between;align-items:center;flex-direction:column;max-width:1200px;margin:0 auto;padding:0 20px}.inventory-page .container,.offers-page .container{display:flex;justify-content:space-between;flex-direction:column;max-width:1200px;margin:0 auto;padding:0 20px}.logo{font-size:1.5rem;font-weight:700;color:#fff;cursor:pointer}.logo span{color:var(--primary)}.nav-links{display:flex;gap:24px}.nav-links button{background:none;border:none;color:var(--light);font-size:.95rem;font-weight:500;cursor:pointer;padding:8px 0;position:relative}.nav-links button:hover{color:#fff}.user-profile{display:flex;align-items:center;gap:12px}.login-btn{background:var(--primary);border:none;border-radius:6px;padding:8px 16px;color:#fff;font-weight:500;cursor:pointer;transition:all .2s}.login-btn:hover{background:var(--primary-dark)}.auth-section{display:flex;align-items:center;gap:16px}.steam-login-btn{background:linear-gradient(135deg,var(--steam-dark),var(--steam-blue));border:none;border-radius:8px;padding:10px 16px;color:#fff;font-weight:500;display:flex;align-items:center;gap:8px;cursor:pointer;transition:transform .2s,box-shadow .2s}.steam-login-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #1b28384d}.steam-login-btn img{height:20px}.user-profile{display:flex;align-items:center;gap:12px;position:relative;cursor:pointer}.user-avatar{width:36px;height:36px;border-radius:50%;overflow:hidden}.avatar-placeholder{width:100%;height:100%;background-color:var(--gray);display:flex;align-items:center;justify-content:center;color:var(--dark)}.user-dropdown{display:flex;flex-direction:column}.username{font-size:.9rem;font-weight:500;color:#fff}.logout-btn{background:none;border:none;color:var(--danger);font-size:.8rem;cursor:pointer;text-align:left;padding:0}.main-content{flex:1}.hero{background:linear-gradient(135deg,#1f2128e6,#1f2128f2),url(https://steamcdn-a.akamaihd.net/steamcommunity/public/images/items/440/efb88b2f3f8f0f1a9b9b7b7b7b7b7b7b7b7b7b7.jpg) center/cover;padding:80px 0;text-align:center}.hero h1{font-size:3rem;font-weight:700;margin-bottom:16px;color:#fff}.hero h1 span{color:var(--primary)}.hero p{font-size:1.2rem;color:var(--gray);max-width:600px;margin:0 auto 32px}.cta-buttons{display:flex;gap:16px;justify-content:center}.primary-btn{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border:none;border-radius:8px;padding:12px 24px;color:#fff;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.primary-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #6c5dd34d}.secondary-btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:8px;padding:12px 24px;color:#fff;font-weight:600;cursor:pointer;transition:all .2s}.secondary-btn:hover{background:#fff3}.features{padding:80px 0;background-color:var(--dark)}.features .container{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature-card{background-color:var(--card-bg);border-radius:12px;padding:32px;text-align:center;transition:transform .3s}.feature-card:hover{transform:translateY(-8px)}.feature-icon{font-size:2.5rem;margin-bottom:16px}.feature-card h3{font-size:1.25rem;margin-bottom:12px;color:#fff}.feature-card p{color:var(--gray);font-size:.95rem}.inventory-page{padding:40px 0;background-color:var(--dark);min-height:calc(100vh - 72px)}.inventory-header{margin-bottom:32px}.inventory-header h1{font-size:2rem;color:#fff;margin-bottom:16px}.inventory-stats{display:flex;gap:16px;margin-bottom:24px;color:var(--gray);font-size:.9rem}.inventory-controls{display:flex;justify-content:space-between;margin-bottom:24px}.filter-controls,.sort-controls{display:flex;align-items:center;gap:8px}.filter-controls select,.sort-controls select{background-color:var(--card-bg);border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:8px 12px;color:#fff;font-size:.9rem;cursor:pointer}.item-image-container{padding:20px;background-color:#2a2d36;display:flex;justify-content:center;align-items:center;height:180px}.item-image{max-width:100%;max-height:100%;object-fit:contain;filter:drop-shadow(0 4px 8px rgba(0,0,0,.5))}.item-details{padding:16px}.item-name{font-size:.95rem;color:#fff;margin-bottom:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.item-tags{display:flex;flex-wrap:wrap;gap:6px}.tag{font-size:.7rem;padding:4px 8px;border-radius:4px;font-weight:500}.tradable{background-color:#7fba7a33;color:var(--success)}.marketable{background-color:#6c5dd333;color:var(--primary)}.type{background-color:#ffce7333;color:var(--accent)}.empty-inventory{grid-column:1 / -1;text-align:center;padding:60px 0}.empty-icon{font-size:3rem;margin-bottom:16px;opacity:.5}.empty-inventory h3{font-size:1.5rem;color:#fff;margin-bottom:8px}.empty-inventory p{color:var(--gray);margin-bottom:24px}.footer{background-color:var(--header-bg);padding:40px 0 20px;border-top:1px solid rgba(255,255,255,.05)}.footer .container{display:flex;flex-direction:column;gap:24px}.footer-logo{font-size:1.25rem;font-weight:700;color:#fff}.footer-links{display:flex;gap:24px}.footer-links a{color:var(--gray);text-decoration:none;transition:color .2s}.footer-links a:hover{color:#fff}.copyright{color:var(--gray);font-size:.8rem;padding-top:20px;border-top:1px solid rgba(255,255,255,.05)}.loading-screen{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;background-color:var(--dark)}.spinner{width:50px;height:50px;border:4px solid rgba(255,255,255,.1);border-radius:50%;border-top-color:var(--primary);animation:spin 1s ease-in-out infinite;margin-bottom:16px}.loading-screen p{color:var(--gray)}.error-container{flex:1;display:flex;justify-content:center;align-items:center;background-color:var(--dark);padding:40px}.error-card{background-color:var(--card-bg);border-radius:12px;padding:32px;text-align:center;max-width:500px}.error-icon{font-size:2.5rem;margin-bottom:16px;color:var(--danger)}.error-card h3{font-size:1.5rem;color:#fff;margin-bottom:8px}.error-card p{color:var(--gray);margin-bottom:24px}@media (max-width: 768px){.header .container{flex-direction:column;gap:16px}.nav-links{margin-left:0;justify-content:center}.features .container{grid-template-columns:1fr}.hero h1{font-size:2rem}.hero p{font-size:1rem}.cta-buttons{flex-direction:column}.inventory-controls{flex-direction:column;gap:12px}.items-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}}.login-btn{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border:none;border-radius:8px;padding:10px 20px;color:#fff;font-weight:500;cursor:pointer;transition:transform .2s,box-shadow .2s}.login-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #6c5dd34d}.logout-message{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:40px}.logout-message h2{color:#fff;margin-bottom:16px}.logout-message p{color:var(--gray);margin-bottom:24px}.trade-link-section{margin-top:40px;width:100%;display:flex;justify-content:center}.trade-link-container{display:flex;width:100%;max-width:600px;box-shadow:0 4px 12px #0000001a}.trade-link-input{flex:1;padding:12px 16px;border:none;border-radius:8px 0 0 8px;background-color:var(--card-bg);color:#fff;font-size:.95rem;border:1px solid rgba(255,255,255,.1);border-right:none}.trade-link-input:focus{outline:none;border-color:var(--primary)}.trade-link-submit{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border:none;border-radius:0 8px 8px 0;padding:0 24px;color:#fff;font-weight:600;cursor:pointer;transition:all .2s}.trade-link-submit:hover{background:linear-gradient(135deg,var(--primary-dark),var(--primary));transform:translateY(-1px)}.notification-bell{position:relative;cursor:pointer;margin-right:20px;font-size:1.2rem}.notification-count{position:absolute;top:-8px;right:-8px;background:var(--danger);color:#fff;border-radius:50%;padding:2px 6px;font-size:.7rem}.notification-dropdown{position:absolute;right:0;top:50px;background:var(--card-bg);border-radius:8px;width:350px;max-height:400px;overflow-y:auto;z-index:1000;box-shadow:0 8px 24px #0000004d}.notification-header{display:flex;justify-content:space-between;align-items:center;padding:16px;border-bottom:1px solid rgba(255,255,255,.1)}.notification-item{display:flex;align-items:center;padding:12px;gap:12px;border-bottom:1px solid rgba(255,255,255,.05)}.notification-item-image{width:40px;height:40px;object-fit:contain}.notification-info{flex:1}.trade-now-btn{background:var(--success);border:none;border-radius:4px;padding:6px 12px;color:#fff;cursor:pointer}.marketplace-section{margin-top:40px}.marketplace-listings{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px;margin-top:20px}.marketplace-item{background:var(--card-bg);border-radius:8px;padding:16px;display:flex;gap:12px;align-items:center}.marketplace-item img{width:60px;height:60px;object-fit:contain}.listing-info{flex:1}.price{color:var(--success);font-weight:700;margin:4px 0}.buy-btn{background:var(--primary);border:none;padding:6px 12px;border-radius:4px;color:#fff;cursor:pointer}.sell-modal{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center}.modal-content{background:var(--card-bg);padding:24px;border-radius:12px;width:300px;text-align:center}.modal-actions{margin-top:16px;display:flex;gap:12px;justify-content:center}.items-grid{width:80%;display:flex;flex-wrap:wrap;justify-content:center;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;margin-top:20px}.item-card{border:1px solid #ddd;border-radius:8px;overflow:hidden;cursor:pointer;transition:all .2s ease;position:relative;width:300px}.item-card:hover{transform:translateY(-5px);box-shadow:0 5px 15px #0000001a}.item-card.selected{border:2px solid #4CAF50;background-color:#4caf501a}.item-selected-check{position:absolute;top:10px;right:10px;background:#4caf50;color:#fff;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700}.item-image-container{width:100%;height:150px;display:flex;align-items:center;justify-content:center;background:#f5f5f5}.item-image{max-width:100%;max-height:100%;object-fit:contain}.item-details{padding:15px}.item-name{font-size:16px;margin:0 0 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.item-tags{display:flex;flex-wrap:wrap;gap:5px}.tag{font-size:12px;padding:3px 8px;border-radius:4px;background:#f0f0f0}.tag.tradable{background:#e3f2fd;color:#1976d2}.tag.marketable{background:#e8f5e9;color:#388e3c}.sell-selected-btn{padding:10px 20px;background:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer;font-weight:700;margin-bottom:20px;transition:background .2s}.sell-selected-btn:hover{background:#388e3c}.marketplace-item-card{display:flex;border:1px solid #ddd;border-radius:8px;overflow:hidden;margin-bottom:20px}.marketplace-item-card .item-image-container{width:150px;height:150px;flex-shrink:0}.marketplace-item-card .item-details{flex-grow:1;padding:15px;display:flex;flex-direction:column}.item-price{font-size:24px;font-weight:700;color:#4caf50;margin:10px 0}.item-actions{margin-top:auto}.buy-btn{padding:10px 20px;background:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer;font-weight:700}.buy-btn.disabled{background:#ccc;cursor:not-allowed}.sell-modal{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background:#fff;padding:30px;border-radius:8px;max-width:500px;width:100%;position:relative}.close-modal{position:absolute;top:15px;right:15px;background:none;border:none;font-size:20px;cursor:pointer}.selected-items-preview{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0;max-height:200px;overflow-y:auto}.selected-item img{width:60px;height:60px;object-fit:contain}.selected-item span{font-size:12px;text-align:center;margin-top:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;width:100%}.price-input-container input{width:100%;padding:10px;margin-top:5px;border:1px solid #ddd;border-radius:4px}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.confirm-btn{padding:10px 20px;background:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer}.confirm-btn:disabled{background:#ccc;cursor:not-allowed}.cancel-btn{padding:10px 20px;background:#f44336;color:#fff;border:none;border-radius:4px;cursor:pointer}.primary-btn,.sell-selected-btn,.buy-btn,.confirm-btn,.cancel-btn,.logout-btn,.login-btn,.quick-sell-btn{padding:10px 20px;border-radius:4px;font-weight:600;font-size:14px;cursor:pointer;transition:all .2s ease;border:none;display:inline-flex;align-items:center;justify-content:center;text-align:center;white-space:nowrap}.primary-btn{background-color:#1976d2;color:#fff;box-shadow:0 2px 4px #0000001a}.primary-btn:hover{background-color:#1565c0;transform:translateY(-1px)}.primary-btn:active{transform:translateY(0)}.sell-selected-btn{background-color:#4caf50;color:#fff;margin-bottom:20px;box-shadow:0 2px 6px #4caf504d}.sell-selected-btn:hover{background-color:#3d8b40;transform:translateY(-1px)}.buy-btn{background-color:#2196f3;color:#fff;width:100%;margin-top:10px;box-shadow:0 2px 4px #2196f333}.buy-btn:hover:not(:disabled){background-color:#0b7dda;transform:translateY(-1px)}.buy-btn:disabled{background-color:#b0bec5;cursor:not-allowed;opacity:.7}.confirm-btn{background-color:#4caf50;color:#fff;margin-right:10px;box-shadow:0 2px 4px #4caf5033}.confirm-btn:hover:not(:disabled){background-color:#3d8b40;transform:translateY(-1px)}.confirm-btn:disabled{background-color:#a5d6a7;cursor:not-allowed}.cancel-btn{background-color:#f5f5f5;color:#333;border:1px solid #ddd}.cancel-btn:hover{background-color:#e0e0e0;transform:translateY(-1px)}.logout-btn{background-color:transparent;color:#f44336;border:1px solid #f44336;padding:5px 10px;font-size:12px;margin-top:5px}.logout-btn:hover{background-color:#ff373732}.login-btn{background-color:#1976d2;color:#fff}.login-btn:hover{background-color:#1565c0}.close-modal{position:absolute;top:15px;right:15px;background:none;border:none;font-size:24px;color:#777;cursor:pointer;padding:5px;line-height:1}.close-modal:hover{color:#333}.nav-links button{background:none;border:none;padding:10px 15px;margin:0 5px;font-size:15px;cursor:pointer;transition:color .2s;position:relative}.nav-links button:hover{color:#1976d2}.nav-links button.active{color:#1976d2;font-weight:600}.nav-links button.active:after{content:"";position:absolute;bottom:-2px;left:15px;right:15px;height:2px;background-color:#1976d2}button:not(:disabled):hover{box-shadow:0 3px 6px #0000001a}button:not(:disabled):active{transform:translateY(0)!important;box-shadow:0 1px 2px #0000001a}@media (max-width: 768px){.primary-btn,.sell-selected-btn,.buy-btn,.confirm-btn,.cancel-btn,.quick-sell-btn{padding:8px 15px;font-size:13px}.nav-links button{padding:8px 10px;font-size:14px}}.sell-modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background:#fff;padding:20px;border-radius:8px;width:400px;max-width:90%}.user-details{display:flex;justify-content:center;gap:2rem;margin-top:1rem;align-items:center}.username{font-size:1.2rem;font-weight:400;color:var(--light);margin-right:1rem}.user-balance{display:flex;align-items:center}.balance-card{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);border-radius:12px;padding:.4rem 1.2rem;display:flex;gap:1rem;align-items:center;box-shadow:0 4px 12px #6c5dd340}.balance-label{font-size:.75rem;color:#fffc;text-transform:uppercase;letter-spacing:1px}.balance-amount{font-size:1.2rem;font-weight:700;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.2)}.offers-header{display:flex;justify-content:center;align-items:center;flex-direction:column;gap:1rem;margin-top:2rem}.marketplace-stats{display:flex;flex-direction:column;gap:8px}.notification-icon{position:relative;cursor:pointer;margin-right:1rem;color:#fff}.notification-badge{position:absolute;top:-5px;right:-5px;background:var(--secondary);color:#fff;border-radius:50%;width:18px;height:18px;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700}.notifications-panel{position:absolute;right:0;top:60px;width:300px;background:var(--card-bg);border:1px solid var(--primary);border-radius:8px;box-shadow:0 4px 12px #0003;z-index:1000;overflow:hidden}.notifications-header{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;background:var(--primary);color:#fff}.notifications-header h4{margin:0;font-size:1rem}.notifications-header button{background:none;border:none;color:#fff;font-size:1.25rem;cursor:pointer}.notifications-list{max-height:400px;overflow-y:auto}.notification-item{padding:1rem;border-bottom:1px solid var(--dark)}.notification-item:last-child{border-bottom:none}.item-info{display:flex;justify-content:space-between;margin-bottom:.5rem}.trade-link{display:block;background:var(--primary);color:#fff;text-align:center;padding:.5rem;border-radius:4px;text-decoration:none;font-size:.85rem}.trade-link:hover{background:var(--primary-dark)}.no-notifications{padding:1.5rem;text-align:center;color:var(--gray)}.quick-sell-btn{position:absolute;bottom:12px;right:12px;padding:8px 16px;border:none;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;font-weight:600;font-size:14px;cursor:pointer;box-shadow:0 2px 8px #6c5dd34d;transition:all .3s ease;z-index:2;overflow:hidden}.quick-sell-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:.5s}.quick-sell-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #6c5dd380}.quick-sell-btn:hover:before{left:100%}.quick-sell-btn:active{transform:translateY(0);box-shadow:0 2px 6px #6c5dd366}.item-card.selected .quick-sell-btn{background:linear-gradient(135deg,var(--success),#5aa857);box-shadow:0 2px 8px #7fba7a66}.item-card.selected .quick-sell-btn:hover{box-shadow:0 4px 12px #7fba7a99}.sell-modal{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#1f2128e6;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fadeIn .3s ease-out}.modal-content{background:var(--darker);border-radius:16px;padding:24px;width:90%;max-width:500px;box-shadow:0 10px 30px #00000080;border:1px solid rgba(108,93,211,.2);position:relative;animation:slideUp .4s cubic-bezier(.175,.885,.32,1.275)}.modal-content h3{color:#fff;margin-bottom:20px;font-size:22px;text-align:center;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.close-modal{position:absolute;top:16px;right:16px;background:none;border:none;color:var(--gray);font-size:24px;cursor:pointer;transition:all .2s}.close-modal:hover{color:var(--danger);transform:rotate(90deg)}.price-input-container{margin:20px 0}.price-input-container label{display:block;margin-bottom:8px;color:var(--light);font-weight:500}.price-input-container input{width:100%;padding:12px 16px;border-radius:8px;border:2px solid var(--card-bg);background:var(--dark);color:#fff;font-size:16px;transition:all .3s}.price-input-container input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6c5dd34d}.price-input-container small{display:block;margin-top:8px;color:var(--gray);font-size:12px}.modal-actions{display:flex;gap:12px;margin-top:24px}.confirm-btn,.cancel-btn{flex:1;padding:12px;border-radius:8px;font-weight:600;cursor:pointer;transition:all .3s}.confirm-btn{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none;box-shadow:0 4px 12px #6c5dd34d}.confirm-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 16px #6c5dd366}.confirm-btn:active:not(:disabled){transform:translateY(0)}.confirm-btn:disabled{opacity:.7;cursor:not-allowed}.cancel-btn{background:transparent;color:var(--gray);border:2px solid var(--card-bg)}.cancel-btn:hover{border-color:var(--danger);color:var(--danger)}.selected-items-preview{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;max-height:150px;overflow-y:auto;padding:8px 0}.selected-item{display:flex;flex-direction:column;align-items:center;width:80px}.selected-item img{width:64px;height:64px;object-fit:contain;border-radius:8px;border:2px solid var(--primary);transition:all .3s}.selected-item:hover img{transform:scale(1.1);box-shadow:0 0 15px var(--primary)}.selected-item span{font-size:12px;color:var(--light);margin-top:4px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;width:100%}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.item-card:hover{box-shadow:0 0 15px #6c5dd34d;transform:translateY(-5px);transition:all .3s ease}.modal-content{box-shadow:0 0 30px #6c5dd333}.item-card{transition:all .3s cubic-bezier(.25,.8,.25,1);position:relative;overflow:hidden}.item-card.selected{border:2px solid var(--success);box-shadow:0 0 20px #7fba7a4d}.item-card.selected:after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--success),#5aa857);animation:selectedGlow 2s infinite}@keyframes selectedGlow{0%{opacity:.7}50%{opacity:1}to{opacity:.7}}.items-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;padding:8px 0;margin:0 auto;width:100%}.item-card{position:relative;background:var(--card-bg);border-radius:12px;overflow:hidden;transition:all .25s cubic-bezier(.4,0,.2,1);border:1px solid rgba(255,255,255,.05);box-shadow:0 2px 8px #0000001a;display:flex;flex-direction:column;height:250px}.item-card:hover{transform:translateY(-4px);box-shadow:0 6px 16px #6c5dd326;border-color:#6c5dd34d}.item-image-container{width:100%;aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#2a2d3a,#1f2128);position:relative;overflow:hidden}.item-image{width:80%;height:80%;object-fit:contain;filter:drop-shadow(0 2px 8px rgba(0,0,0,.3));transition:transform .3s ease}.item-card:hover .item-image{transform:scale(1.05)}.item-details{padding:12px;flex-grow:1;display:flex;flex-direction:column}.item-name{font-size:14px;color:#fff;margin:0 0 8px;font-weight:500;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.item-tags{display:flex;gap:6px;margin-top:auto}.tag{font-size:10px;padding:2px 6px;border-radius:4px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.tag.tradable{background:#7fba7a26;color:var(--success)}.tag.type{background:#6c5dd326;color:var(--primary)}.item-card.selected{border:1px solid var(--success);box-shadow:0 0 0 2px #7fba7a4d;animation:pulseGlow 2s infinite}@keyframes pulseGlow{0%{box-shadow:0 0 0 2px #7fba7a4d}50%{box-shadow:0 0 0 4px #7fba7a26}to{box-shadow:0 0 0 2px #7fba7a4d}}.item-selected-check{position:absolute;top:8px;right:8px;width:20px;height:20px;background:var(--success);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;box-shadow:0 2px 8px #0000004d}@media (max-width: 768px){.items-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}}@media (max-width: 480px){.items-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}.item-name{font-size:12px}}.notification-wrapper{position:relative}.notification-icon{cursor:pointer;padding:8px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background-color .3s ease;position:relative}.notification-icon:hover{background-color:#ffffff1a}.notification-badge{position:absolute;top:-2px;right:-2px;background-color:var(--danger);color:#fff;border-radius:50%;width:18px;height:18px;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700}.notifications-panel{position:absolute;top:100%;right:0;width:350px;max-height:500px;overflow-y:auto;background-color:var(--card-bg);border-radius:8px;box-shadow:0 4px 12px #0000004d;z-index:1000;padding:15px;margin-top:10px}.notifications-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.notifications-header h4{margin:0;font-size:16px}.close-notifications{background:none;border:none;color:var(--gray);font-size:20px;cursor:pointer;padding:0}.notifications-list{display:flex;flex-direction:column;gap:10px}.notification-item{padding:12px;border-radius:6px;background-color:#ffffff0d;border-left:3px solid var(--primary)}.notification-item.completed{border-left-color:var(--success)}.notification-item.failed{border-left-color:var(--danger)}.notification-content{margin-bottom:8px}.notification-type{font-weight:700;color:var(--primary);margin-bottom:5px}.item-info{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:5px}.item-name{font-weight:500}.item-price{color:var(--accent);font-weight:700}.item-status{font-size:12px;padding:2px 6px;border-radius:4px;background-color:#ffffff1a}.notification-time{font-size:12px;color:var(--gray)}.trade-link-btn{width:100%;padding:8px;border:none;border-radius:4px;background-color:var(--primary);color:#fff;font-weight:500;cursor:pointer;transition:background-color .3s ease}.trade-link-btn:hover{background-color:var(--primary-dark)}.loading-notifications{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}.error-notifications{color:var(--danger);padding:15px;text-align:center}.retry-btn{margin-top:10px;padding:6px 12px;background-color:var(--danger);color:#fff;border:none;border-radius:4px;cursor:pointer}.no-notifications{text-align:center;padding:20px;color:var(--gray)}@keyframes pulse{0%{transform:scale(1);opacity:.7}50%{transform:scale(1.05);opacity:1}to{transform:scale(1);opacity:.7}}@keyframes glow{0%{box-shadow:0 0 5px var(--primary-light)}50%{box-shadow:0 0 20px var(--primary-light)}to{box-shadow:0 0 5px var(--primary-light)}}@keyframes slideIn{0%{transform:translateY(-10px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes spin{to{transform:rotate(360deg)}}.navbar{background:linear-gradient(135deg,var(--header-bg) 0%,var(--darker) 100%);box-shadow:0 4px 20px #0000004d;position:relative;z-index:100;border-bottom:1px solid rgba(255,255,255,.05)}.navbar-container{display:flex;align-items:center;justify-content:space-between;max-width:1400px;margin:0 auto;padding:0 20px;height:70px}.navbar-logo{display:flex;align-items:center;font-size:1.8rem;font-weight:700;color:var(--light);cursor:pointer;position:relative;transition:all .3s ease}.logo-highlight{color:var(--primary-light);text-shadow:0 0 10px rgba(108,93,211,.5)}.logo-glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100%;height:100%;background:radial-gradient(circle at center,rgba(108,93,211,.3) 0%,transparent 70%);opacity:0;transition:opacity .3s ease}.navbar-logo:hover .logo-glow{opacity:1}.navbar-links{display:flex;gap:15px}.nav-link{background:transparent;border:none;color:var(--gray);font-size:1rem;font-weight:500;padding:10px 15px;border-radius:8px;cursor:pointer;position:relative;overflow:hidden;transition:all .3s ease}.nav-link span{position:relative;z-index:1}.nav-link:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(108,93,211,.1) 0%,transparent 100%);transform:translateY(100%);transition:transform .3s ease}.nav-link:hover{color:var(--light)}.nav-link:hover:before{transform:translateY(0)}.nav-link.active{color:var(--light);background:#6c5dd333}.nav-link.active:after{content:"";position:absolute;bottom:0;left:50%;transform:translate(-50%);width:30%;height:3px;background:var(--primary);border-radius:3px 3px 0 0}.navbar-auth{display:flex;align-items:center;gap:15px}.login-button{display:flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--steam-blue) 0%,var(--steam-dark) 100%);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-weight:500;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #1b28384d;position:relative;overflow:hidden}.login-button:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:linear-gradient(to bottom right,#fff0,#ffffff1a,#fff0);transform:rotate(30deg);transition:all .5s ease}.login-button:hover:before{left:100%}.login-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #1b283866}.steam-icon svg{width:18px;height:18px}.user-profile{display:flex;align-items:center;gap:15px}.user-avatar{width:40px;height:40px;border-radius:50%;overflow:hidden;position:relative;cursor:pointer;border:2px solid var(--primary);box-shadow:0 0 10px #6c5dd380;transition:all .3s ease}.user-avatar:hover{transform:scale(1.1);box-shadow:0 0 15px #6c5dd3cc}.user-avatar img{width:100%;height:100%;object-fit:cover}.avatar-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:var(--primary-dark);color:#fff;font-weight:700}.avatar-pulse{position:absolute;top:0;left:0;width:100%;height:100%;border-radius:50%;background:#6c5dd34d;animation:pulse 2s infinite;pointer-events:none}.user-info{display:flex;flex-direction:column}.username-balance{display:flex;align-items:center;gap:10px}.username{font-weight:500;color:var(--light);max-width:120px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.balance{background:#4a3db54d;padding:3px 8px;border-radius:12px;font-size:.9rem;color:var(--accent);display:flex;align-items:center;gap:5px}.balance-amount{font-weight:600}.user-actions{display:flex;align-items:center;gap:10px}.logout-button,.notification-button{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#ffffff1a;border:none;border-radius:50%;cursor:pointer;transition:all .3s ease;position:relative}.logout-button:hover,.notification-button:hover{background:#fff3;transform:translateY(-2px)}.logout-button svg,.notification-button svg{width:18px;height:18px;fill:var(--light)}.notification-button{position:relative}.notification-button[data-count]:after{content:attr(data-count);position:absolute;top:-5px;right:-5px;background:var(--danger);color:#fff;font-size:.7rem;font-weight:700;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center}.notification-container{position:relative}.notifications-dropdown{position:absolute;top:50px;right:0;width:380px;max-height:500px;overflow-y:auto;background:var(--notification-bg);border-radius:12px;box-shadow:0 10px 30px #00000080;z-index:1000;animation:slideIn .3s ease forwards;transform-origin:top right;border:1px solid rgba(255,255,255,.05)}.notifications-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;border-bottom:1px solid rgba(255,255,255,.05)}.notifications-header h3{margin:0;color:var(--light);font-size:1.2rem}.close-button{background:none;border:none;color:var(--gray);font-size:1.5rem;cursor:pointer;transition:color .3s ease}.close-button:hover{color:var(--light)}.notifications-content{padding:10px}.loading-spinner{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px}.spinner{width:30px;height:30px;border:3px solid rgba(108,93,211,.3);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:15px}.error-message{text-align:center;padding:20px;color:var(--danger)}.error-message button{margin-top:10px;background:var(--danger);color:#fff;border:none;padding:8px 15px;border-radius:6px;cursor:pointer;transition:background .3s ease}.error-message button:hover{background:#e05545}.empty-notifications{text-align:center;padding:30px;color:var(--gray)}.notifications-list{display:flex;flex-direction:column;gap:8px}.notification-item{background:#ffffff08;border-radius:8px;padding:12px;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}.notification-item:before{content:"";position:absolute;top:0;left:0;width:3px;height:100%;background:var(--primary);transform:scaleY(0);transform-origin:top;transition:transform .3s ease}.notification-item:hover{background:#ffffff12}.notification-item:hover:before{transform:scaleY(1)}.notification-item.unread{background:#6c5dd31a}.notification-item.unread .notification-badge{display:block}.notification-badge{position:absolute;top:12px;left:12px;width:8px;height:8px;background:var(--primary);border-radius:50%;display:none}.notification-details{margin-left:15px;width:95%}.notification-meta{display:flex;justify-content:space-between;margin-bottom:5px}.notification-type{font-size:.8rem;font-weight:600;color:var(--primary-light);text-transform:uppercase}.notification-time{font-size:.7rem;color:var(--gray)}.notification-body{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.item-name{font-weight:500;color:var(--light);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}.item-price{font-weight:600;color:var(--accent)}.notification-footer{display:flex;justify-content:space-between;align-items:center}.status-badge{font-size:.7rem;padding:3px 8px;border-radius:10px;font-weight:600}.status-badge.pending{background:#ffce731a;color:var(--accent)}.status-badge.completed{background:#7fba7a1a;color:var(--success)}.status-badge.rejected{background:#ff6a551a;color:var(--danger)}.trade-button{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;border:none;padding:5px 10px;border-radius:6px;font-size:.7rem;font-weight:600;cursor:pointer;transition:all .3s ease}.trade-button:hover{transform:translateY(-2px);box-shadow:0 4px 10px #6c5dd34d}@media (max-width: 768px){.navbar-container{padding:0 10px}.navbar-logo{font-size:1.5rem}.navbar-links{gap:5px}.nav-link{padding:8px 10px;font-size:.9rem}.notifications-dropdown{width:280px}}.trade-settings-section{margin-top:40px;width:100%;display:flex;justify-content:center}.trade-settings-container{background:var(--card-bg);border-radius:12px;padding:24px;width:100%;max-width:600px;box-shadow:0 4px 20px #0003;border:1px solid rgba(108,93,211,.2)}.setting-group{margin-bottom:1.5rem}.setting-group label{display:block;margin-bottom:.75rem;font-weight:500;color:var(--light);font-size:.95rem}.setting-input{width:100%;padding:12px 16px;border-radius:8px;border:1px solid rgba(255,255,255,.1);background:#0003;color:#fff;font-size:.95rem;transition:all .3s ease}.setting-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6c5dd34d}.setting-hint{font-size:.8rem;margin-top:.5rem;color:var(--gray);line-height:1.4}.setting-hint a{color:var(--accent);text-decoration:none;transition:color .2s}.setting-hint a:hover{color:var(--secondary);text-decoration:underline}.settings-submit{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border:none;border-radius:8px;padding:12px 24px;color:#fff;font-weight:600;cursor:pointer;transition:all .3s ease;width:100%;margin-top:.5rem;box-shadow:0 4px 12px #6c5dd34d}.settings-submit:hover{background:linear-gradient(135deg,var(--primary-dark),var(--primary));transform:translateY(-2px);box-shadow:0 6px 16px #6c5dd366}.settings-submit:active{transform:translateY(0)}@media (max-width: 768px){.trade-settings-container{padding:20px}.setting-group{margin-bottom:1.25rem}.settings-submit{padding:10px 20px}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.trade-settings-section{animation:fadeInUp .5s ease-out}.api-key-tooltip{position:relative;display:inline-block;margin-left:6px;cursor:pointer}.api-key-tooltip .tooltip-text{visibility:hidden;width:200px;background-color:var(--darker);color:var(--light);text-align:center;border-radius:6px;padding:10px;position:absolute;z-index:1;bottom:125%;left:50%;transform:translate(-50%);opacity:0;transition:opacity .3s;font-size:.8rem;border:1px solid var(--primary)}.api-key-tooltip:hover .tooltip-text{visibility:visible;opacity:1}.settings-success{color:var(--success);font-size:.9rem;margin-top:1rem;text-align:center;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.settings-error{color:var(--danger);font-size:.9rem;margin-top:1rem;text-align:center;animation:shake .5s ease}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-5px)}40%,80%{transform:translate(5px)}}