@import "https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap";
:root{--primary:#0c3fce;--primary-light:#eef2ff;--primary-dark:#0a2f9a;--secondary:#f5a623;--secondary-light:#fff3dc;--bg:#f2f4f5;--card:#fff;--title:#002f34;--text:#5b6269;--text-light:#7f9799;--border:#d8dfe0;--border-light:#eaeeef;--success:#39973d;--danger:#d60000;--warning:#fdb022;--white:#fff;--black:#000;--gray10:#f8f9fb;--gray20:#e0e2e7;--gray60:#9096a1;--radius:8px;--radius-lg:12px;--shadow:0 2px 8px #00000014;--shadow-lg:0 4px 20px #0000001f;--max-width:1280px;--header-h:64px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:Poppins,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,select,textarea{font-family:inherit}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}.header{z-index:100;background:var(--white);box-shadow:var(--shadow);position:sticky;top:0}.header-inner{height:var(--header-h);align-items:center;gap:16px;display:flex}.header-logo{object-fit:contain;border-radius:8px;flex-shrink:0;width:40px;height:40px}.header-search{flex:1;max-width:600px;position:relative}.header-search input{border:2px solid var(--border);border-radius:var(--radius);outline:none;width:100%;padding:10px 16px 10px 42px;font-size:14px;transition:border .2s}.header-search input:focus{border-color:var(--primary)}.header-search .search-icon{color:var(--gray60);position:absolute;top:50%;left:14px;transform:translateY(-50%)}.header-actions{align-items:center;gap:12px;margin-left:auto;display:flex}.header-link{color:var(--title);border-radius:var(--radius);padding:8px 12px;font-size:14px;font-weight:500;transition:background .2s}.header-link:hover{background:var(--gray10)}.btn-sell{background:var(--secondary);color:var(--white);border-radius:30px;align-items:center;gap:6px;padding:10px 24px;font-size:14px;font-weight:600;transition:background .2s,transform .1s;display:flex;box-shadow:0 2px 8px #f5a6234d}.btn-sell:hover{background:var(--primary);transform:translateY(-1px);box-shadow:0 2px 8px #0c3fce4d}.btn-login{background:var(--primary);color:var(--white);border-radius:var(--radius);padding:10px 20px;font-size:14px;font-weight:500;transition:background .2s}.btn-login:hover{background:var(--primary-dark)}.cat-bar{background:var(--white);border-bottom:1px solid var(--border-light);scrollbar-width:none;overflow-x:auto}.cat-bar::-webkit-scrollbar{display:none}.cat-bar-inner{gap:0;padding:8px 0;display:flex}.cat-bar-item{border-radius:var(--radius);cursor:pointer;white-space:nowrap;text-align:center;flex-direction:column;flex-shrink:0;align-items:center;gap:4px;min-width:90px;padding:8px 10px;transition:background .2s;display:flex}.cat-bar-item:hover{background:var(--primary-light)}.cat-bar-item.active{background:var(--primary-light);color:var(--primary)}.cat-bar-icon{background:var(--gray10);border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;display:flex;overflow:hidden}.cat-bar-icon img{object-fit:contain;width:24px;height:24px}.cat-bar-label{color:var(--title);text-overflow:ellipsis;max-width:80px;font-size:10px;font-weight:500;line-height:1.3;overflow:hidden}.hero{background:linear-gradient(135deg, var(--primary) 0%, #1a4fd4 50%, #2b5fe0 100%);padding:48px 0;position:relative;overflow:hidden}.hero:after{content:"";background:radial-gradient(circle,#f5a62326 0%,#0000 70%);border-radius:50%;width:600px;height:600px;position:absolute;top:-50%;right:-20%}.hero-content{z-index:1;text-align:center;position:relative}.hero h1{color:var(--white);margin-bottom:8px;font-size:32px;font-weight:700}.hero p{color:#ffffffd9;margin-bottom:24px;font-size:16px}.hero-search{background:var(--white);max-width:640px;box-shadow:var(--shadow-lg);border-radius:8px;gap:0;margin:0 auto;display:flex;overflow:hidden}.hero-search input{border:none;outline:none;flex:1;padding:14px 20px;font-size:15px}.hero-search button{background:var(--secondary);color:var(--white);padding:14px 28px;font-size:15px;font-weight:600;transition:background .2s}.hero-search button:hover{background:#d4880e}.section{padding:32px 0}.section-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.section-title{color:var(--title);font-size:20px;font-weight:600}.section-link{color:var(--primary);font-size:14px;font-weight:500}.section-link:hover{text-decoration:underline}.cat-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:12px;display:grid}.cat-card{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);cursor:pointer;text-align:center;flex-direction:column;align-items:center;gap:8px;padding:16px 8px;transition:all .2s;display:flex}.cat-card:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-2px)}.cat-card-icon{background:var(--primary-light);border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.cat-card-icon img{object-fit:contain;width:28px;height:28px}.cat-card-name{color:var(--title);font-size:12px;font-weight:500;line-height:1.3}.home-cat-grid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:12px 8px;display:grid}@media (min-width:768px){.home-cat-grid{grid-template-columns:repeat(7,1fr)}}@media (min-width:1024px){.home-cat-grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr))}}.home-cat-card{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);cursor:pointer;text-align:center;flex-direction:column;align-items:center;gap:8px;padding:16px 8px;text-decoration:none;transition:all .25s;display:flex}.home-cat-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 4px 16px #0c3fce1f}.home-cat-icon{background:var(--gray10);border-radius:16px;justify-content:center;align-items:center;width:56px;height:56px;transition:background .2s;display:flex;overflow:hidden}.home-cat-card:hover .home-cat-icon{background:var(--primary-light)}.home-cat-icon img{object-fit:contain;width:36px;height:36px}.home-cat-emoji{font-size:28px}.home-cat-name{color:var(--title);justify-content:center;align-items:center;min-height:32px;font-size:12px;font-weight:500;line-height:1.35;display:flex}.subcat-list{flex-direction:column;gap:8px;display:flex}.subcat-item{background:var(--white);border:1px solid var(--border-light);border-radius:var(--radius);cursor:pointer;color:inherit;align-items:center;gap:12px;padding:14px 16px;text-decoration:none;transition:all .2s;display:flex}.subcat-item:hover{border-color:var(--primary);background:var(--primary-light)}.subcat-item.active{background:var(--primary-light);border-color:var(--primary)}.subcat-icon{object-fit:contain;opacity:.7;flex-shrink:0;width:24px;height:24px}.subcat-title{color:var(--title);flex:1;font-size:14px;font-weight:500}.subcat-arrow{color:var(--gray60);flex-shrink:0;font-size:18px}.subcat-item:hover .subcat-arrow{color:var(--primary)}.brand-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;display:grid}.brand-card{background:var(--white);border:1px solid var(--border-light);border-radius:var(--radius);cursor:pointer;color:inherit;align-items:center;gap:10px;padding:14px 16px;text-decoration:none;transition:all .2s;display:flex}.brand-card:hover{border-color:var(--primary);box-shadow:var(--shadow)}.brand-card-icon{object-fit:contain;background:var(--gray10);border-radius:50%;width:32px;height:32px}.brand-card-name{color:var(--title);font-size:13px;font-weight:500}.model-list{flex-wrap:wrap;gap:8px;display:flex}.model-chip{background:var(--white);border:1px solid var(--border-light);color:var(--title);cursor:pointer;border-radius:24px;padding:8px 16px;font-size:13px;font-weight:500;text-decoration:none;transition:all .2s}.model-chip:hover,.model-chip.active{background:var(--primary);color:var(--white);border-color:var(--primary)}.listing-grid{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}@media (max-width:1024px){.listing-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width:768px){.listing-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:480px){.listing-grid{grid-template-columns:1fr}}.listing-card{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);cursor:pointer;transition:all .25s;position:relative;overflow:hidden}.listing-card:hover{box-shadow:var(--shadow-lg);border-color:#0000;transform:translateY(-3px)}.listing-card-img{aspect-ratio:4/3;object-fit:cover;background:var(--gray10);width:100%}.listing-card-badge{background:var(--secondary);color:var(--white);text-transform:uppercase;letter-spacing:.5px;border-radius:4px;padding:3px 8px;font-size:10px;font-weight:700;position:absolute;top:10px;left:10px}.listing-card-fav{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#ffffffe6;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;transition:all .2s;display:flex;position:absolute;top:10px;right:10px}.listing-card-fav:hover{background:var(--white);transform:scale(1.1)}.listing-card-fav.active svg{fill:#f44;stroke:#f44}.listing-card-body{padding:12px}.listing-card-price{color:var(--title);margin-bottom:4px;font-size:18px;font-weight:700}.listing-card-title{color:var(--text);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:8px;font-size:13px;line-height:1.4;display:-webkit-box;overflow:hidden}.listing-card-meta{color:var(--text-light);align-items:center;gap:6px;font-size:11px;display:flex}.listing-card-meta svg{flex-shrink:0;width:12px;height:12px}.featured-scroll{scroll-snap-type:x mandatory;scrollbar-width:none;gap:16px;padding-bottom:8px;display:flex;overflow-x:auto}.featured-scroll::-webkit-scrollbar{display:none}.featured-scroll .listing-card{scroll-snap-align:start;flex-shrink:0;min-width:260px}.footer{background:var(--title);color:#ffffffb3;margin-top:48px;padding:48px 0 24px}.footer-grid{grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:32px;display:grid}@media (max-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}.footer-col h4{color:var(--white);margin-bottom:16px;font-size:15px;font-weight:600}.footer-col a{padding:4px 0;font-size:13px;transition:color .2s;display:block}.footer-col a:hover{color:var(--secondary)}.footer-bottom{text-align:center;border-top:1px solid #ffffff1a;padding-top:20px;font-size:13px}.footer-logo{border-radius:8px;width:36px;height:36px;margin-bottom:12px}.listing-detail{grid-template-columns:1fr 360px;gap:24px;padding:24px 0;display:grid}@media (max-width:900px){.listing-detail{grid-template-columns:1fr}}.ad-gallery{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);overflow:hidden}.listing-gallery-main{aspect-ratio:16/10;object-fit:contain;background:var(--black);width:100%}.listing-gallery-thumbs{gap:8px;padding:12px;display:flex;overflow-x:auto}.listing-gallery-thumb{object-fit:cover;cursor:pointer;opacity:.7;border:2px solid #0000;border-radius:6px;width:72px;height:54px;transition:border .2s}.listing-gallery-thumb:hover,.listing-gallery-thumb.active{border-color:var(--primary);opacity:1}.listing-info{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);padding:24px}.listing-price{color:var(--title);margin-bottom:4px;font-size:28px;font-weight:700}.listing-title-detail{color:var(--title);margin-bottom:12px;font-size:18px;font-weight:500}.ad-meta-row{flex-wrap:wrap;gap:16px;margin-bottom:16px;display:flex}.ad-meta-item{color:var(--text);align-items:center;gap:6px;font-size:13px;display:flex}.ad-desc{color:var(--text);border-top:1px solid var(--border-light);margin-top:16px;padding-top:16px;font-size:14px;line-height:1.7}.listing-specs{margin-top:16px}.listing-specs table{border-collapse:collapse;width:100%}.listing-specs td{border-bottom:1px solid var(--border-light);padding:10px 12px;font-size:13px}.listing-specs td:first-child{color:var(--text-light);width:40%;font-weight:500}.listing-specs td:last-child{color:var(--title)}.seller-card{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);padding:20px;position:sticky;top:88px}.seller-info{align-items:center;gap:12px;margin-bottom:16px;display:flex}.seller-avatar{object-fit:cover;background:var(--primary-light);border-radius:50%;width:56px;height:56px}.seller-name{color:var(--title);font-size:15px;font-weight:600}.seller-since{color:var(--text-light);font-size:12px}.seller-rating{color:var(--secondary);align-items:center;gap:4px;font-size:13px;display:flex}.btn-contact{border-radius:var(--radius);justify-content:center;align-items:center;gap:8px;width:100%;margin-bottom:8px;padding:12px;font-size:14px;font-weight:600;transition:all .2s;display:flex}.btn-chat{background:var(--primary);color:var(--white)}.btn-chat:hover{background:var(--primary-dark)}.btn-phone{background:var(--white);color:var(--primary);border:2px solid var(--primary)}.btn-phone:hover{background:var(--primary-light)}.auth-page{min-height:calc(100vh - var(--header-h));justify-content:center;align-items:center;padding:40px 20px;display:flex}.auth-card{background:var(--white);border-radius:var(--radius-lg);width:100%;max-width:440px;box-shadow:var(--shadow-lg);padding:40px}.auth-card h1{color:var(--title);text-align:center;margin-bottom:8px;font-size:24px;font-weight:700}.auth-card p{color:var(--text);text-align:center;margin-bottom:24px;font-size:14px}.form-group{margin-bottom:16px}.form-group label{color:var(--title);margin-bottom:6px;font-size:13px;font-weight:500;display:block}.form-group input,.form-group select,.form-group textarea{border:2px solid var(--border);border-radius:var(--radius);outline:none;width:100%;padding:12px 14px;font-size:14px;transition:border .2s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}.btn-primary{background:var(--primary);width:100%;color:var(--white);border-radius:var(--radius);margin-top:8px;padding:14px;font-size:15px;font-weight:600;transition:background .2s}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.auth-link{text-align:center;color:var(--text);margin-top:16px;font-size:14px}.auth-link a{color:var(--primary);font-weight:500}.search-page{grid-template-columns:260px 1fr;gap:24px;padding:24px 0;display:grid}@media (max-width:768px){.search-page{grid-template-columns:1fr}}.filter-sidebar{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);height:fit-content;padding:20px;position:sticky;top:88px}.filter-sidebar h3{color:var(--title);margin-bottom:16px;font-size:16px;font-weight:600}.filter-section{border-bottom:1px solid var(--border-light);margin-bottom:20px;padding-bottom:16px}.filter-section:last-child{border-bottom:none;margin-bottom:0}.filter-section h4{color:var(--title);margin-bottom:10px;font-size:13px;font-weight:600}.filter-option{color:var(--text);cursor:pointer;align-items:center;gap:8px;padding:6px 0;font-size:13px;display:flex}.filter-option input[type=checkbox],.filter-option input[type=radio]{accent-color:var(--primary)}.breadcrumb{color:var(--text-light);flex-wrap:wrap;align-items:center;gap:8px;padding:12px 0;font-size:13px;display:flex}.breadcrumb a:hover{color:var(--primary)}.breadcrumb span{color:var(--gray60)}.chat-layout{height:calc(100vh - var(--header-h));background:var(--white);grid-template-columns:320px 1fr;display:grid}@media (max-width:768px){.chat-layout{grid-template-columns:1fr}}.chat-list{border-right:1px solid var(--border-light);overflow-y:auto}.chat-list-item{cursor:pointer;border-bottom:1px solid var(--border-light);align-items:center;gap:12px;padding:14px 16px;transition:background .2s;display:flex}.chat-list-item:hover,.chat-list-item.active{background:var(--primary-light)}.chat-avatar{object-fit:cover;background:var(--gray10);border-radius:50%;flex-shrink:0;width:44px;height:44px}.chat-preview{flex:1;min-width:0}.chat-preview-name{color:var(--title);font-size:14px;font-weight:600}.chat-preview-msg{color:var(--text-light);white-space:nowrap;text-overflow:ellipsis;font-size:12px;overflow:hidden}.chat-messages{flex-direction:column;display:flex}.chat-messages-header{border-bottom:1px solid var(--border-light);color:var(--title);padding:14px 20px;font-weight:600}.chat-messages-body{flex-direction:column;flex:1;gap:8px;padding:20px;display:flex;overflow-y:auto}.chat-bubble{border-radius:16px;max-width:70%;padding:10px 14px;font-size:14px;line-height:1.5}.chat-bubble.sent{background:var(--primary);color:var(--white);border-bottom-right-radius:4px;align-self:flex-end}.chat-bubble.received{background:var(--gray10);color:var(--title);border-bottom-left-radius:4px;align-self:flex-start}.chat-input-bar{border-top:1px solid var(--border-light);gap:8px;padding:14px 20px;display:flex}.chat-input-bar input{border:2px solid var(--border);border-radius:24px;outline:none;flex:1;padding:10px 16px;font-size:14px}.chat-input-bar input:focus{border-color:var(--primary)}.chat-input-bar button{background:var(--primary);color:var(--white);border-radius:24px;padding:10px 20px;font-weight:600}.post-ad-page{max-width:720px;margin:0 auto;padding:32px 20px}.post-listing-card{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);padding:32px}.post-listing-card h1{color:var(--title);margin-bottom:24px;font-size:22px;font-weight:700}.image-upload{flex-wrap:wrap;gap:12px;margin-bottom:20px;display:flex}.image-upload-box{border:2px dashed var(--border);border-radius:var(--radius);cursor:pointer;width:100px;height:100px;color:var(--gray60);justify-content:center;align-items:center;font-size:28px;transition:border .2s;display:flex}.image-upload-box:hover{border-color:var(--primary);color:var(--primary)}.image-preview{border-radius:var(--radius);object-fit:cover;width:100px;height:100px;position:relative}.loading{justify-content:center;align-items:center;padding:60px;display:flex}.spinner{border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;color:var(--text-light);padding:60px 20px}.empty-state h3{color:var(--title);margin-bottom:8px;font-size:18px}.tabs{gap:4px;margin-bottom:20px;display:flex;overflow-x:auto}.tab{color:var(--text);background:var(--white);border:1px solid var(--border);white-space:nowrap;border-radius:24px;padding:8px 20px;font-size:13px;font-weight:500;transition:all .2s}.tab.active,.tab:hover{background:var(--primary);color:var(--white);border-color:var(--primary)}.profile-header{background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border-light);align-items:center;gap:24px;margin-bottom:24px;padding:32px;display:flex}@media (max-width:640px){.profile-header{text-align:center;flex-direction:column}}.profile-avatar{object-fit:cover;background:var(--primary-light);border:3px solid var(--primary);border-radius:50%;width:96px;height:96px}.profile-name{color:var(--title);font-size:22px;font-weight:700}.profile-detail{color:var(--text-light);font-size:13px}.alert{border-radius:var(--radius);margin-bottom:16px;padding:12px 16px;font-size:14px}.alert-error{color:var(--danger);background:#fef2f2;border:1px solid #fecaca}.alert-success{color:var(--success);background:#f0fdf4;border:1px solid #bbf7d0}.hamburger{padding:8px;display:none}@media (max-width:768px){.hamburger{display:block}.header-actions .header-link{display:none}.footer-grid{grid-template-columns:1fr}}.mobile-nav{background:var(--white);border-top:1px solid var(--border);z-index:100;padding:6px 0;padding-bottom:env(safe-area-inset-bottom,6px);display:none;position:fixed;bottom:0;left:0;right:0}@media (max-width:768px){.mobile-nav{justify-content:space-around;display:flex}}.mobile-nav-item{color:var(--text-light);flex-direction:column;align-items:center;gap:2px;padding:4px 12px;font-size:10px;display:flex}.mobile-nav-item.active{color:var(--primary)}.mobile-nav-item svg{width:22px;height:22px}.pagination{justify-content:center;gap:8px;padding:24px 0;display:flex}.page-btn{border-radius:var(--radius);background:var(--white);border:1px solid var(--border);color:var(--text);padding:8px 16px;font-size:14px;font-weight:500;transition:all .2s}.page-btn:hover,.page-btn.active{background:var(--primary);color:var(--white);border-color:var(--primary)}.sort-bar{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.sort-bar select{border:1px solid var(--border);border-radius:var(--radius);outline:none;padding:8px 12px;font-size:13px}.results-count{color:var(--text-light);font-size:14px}@media (max-width:1024px){.listing-grid{grid-template-columns:repeat(3,1fr);gap:12px}.listing-detail{grid-template-columns:1fr 320px;gap:16px}.home-cat-grid{grid-template-columns:repeat(5,1fr);gap:10px 8px}}@media (max-width:768px){:root{--header-h:56px}.container{padding:0 12px}.header-inner{height:var(--header-h);gap:8px}.header-logo{width:34px;height:34px}.header-search{max-width:none}.header-search input{padding:8px 12px 8px 36px;font-size:13px}.header-search .search-icon{left:10px}.header-actions{gap:6px}.header-actions .header-link{display:none}.btn-sell,.btn-login{padding:8px 14px;font-size:12px}.hamburger{display:block}.cat-bar{display:none}.hero{padding:28px 0}.hero h1{font-size:22px}.hero p{margin-bottom:16px;font-size:13px}.hero-search{border-radius:var(--radius);flex-direction:column}.hero-search input{border-bottom:1px solid var(--border-light);padding:12px 16px;font-size:14px}.hero-search button{border-radius:0;padding:12px}.home-cat-grid{grid-template-columns:repeat(4,1fr);gap:8px 6px}.home-cat-card{border-radius:var(--radius);gap:6px;padding:10px 4px}.home-cat-icon{border-radius:12px;width:42px;height:42px}.home-cat-icon img{width:28px;height:28px}.home-cat-emoji{font-size:22px}.home-cat-name{min-height:26px;font-size:10px;line-height:1.25}.section{padding:20px 0}.section-title{font-size:17px}.section-link{font-size:13px}.listing-grid{grid-template-columns:repeat(2,1fr);gap:8px}.listing-card-body{padding:8px}.listing-card-price{font-size:15px}.listing-card-title{-webkit-line-clamp:1;margin-bottom:4px;font-size:12px}.listing-card-meta{font-size:10px}.listing-card-badge{padding:2px 6px;font-size:8px;top:6px;left:6px}.listing-card-fav{width:28px;height:28px;top:6px;right:6px}.listing-card-fav svg{width:14px;height:14px}.featured-scroll .listing-card{min-width:200px}.listing-detail{grid-template-columns:1fr;gap:12px;padding:12px 0}.listing-price{font-size:22px}.listing-title-detail{font-size:16px}.listing-info{padding:16px}.listing-gallery-thumbs{gap:6px;padding:8px}.listing-gallery-thumb{width:56px;height:42px}.seller-card{padding:16px;position:static}.seller-avatar{width:48px;height:48px}.search-page{grid-template-columns:1fr;gap:12px}.filter-sidebar{padding:16px;position:static}.filter-sidebar h3{font-size:15px}.auth-page{padding:20px 12px}.auth-card{padding:24px 20px}.auth-card h1{font-size:20px}.chat-layout{height:calc(100vh - var(--header-h));grid-template-columns:1fr}.chat-list-item{padding:10px 12px}.chat-messages-body{padding:12px}.post-ad-page{padding:16px 12px}.post-listing-card{padding:20px 16px}.post-listing-card h1{margin-bottom:16px;font-size:18px}.footer{margin-top:24px;padding:28px 0 16px}.footer-grid{grid-template-columns:repeat(2,1fr);gap:20px}.footer-col h4{margin-bottom:10px;font-size:14px}.footer-col a{font-size:12px}.profile-header{text-align:center;flex-direction:column;gap:16px;padding:20px 16px}.profile-avatar{width:72px;height:72px}.profile-name{font-size:18px}.tabs{gap:4px}.tab{padding:6px 14px;font-size:12px}.breadcrumb{padding:8px 0;font-size:12px}.mobile-nav{justify-content:space-around;display:flex}main{padding-bottom:60px}}@media (max-width:480px){.container{padding:0 10px}.header-search input{padding:7px 10px 7px 32px;font-size:12px}.btn-sell{border-radius:20px;padding:7px 12px;font-size:11px}.btn-login{padding:7px 12px;font-size:11px}.hero{padding:20px 0}.hero h1{font-size:18px}.hero p{font-size:12px}.home-cat-grid{grid-template-columns:repeat(3,1fr);gap:6px}.home-cat-card{padding:8px 4px}.home-cat-icon{border-radius:10px;width:38px;height:38px}.home-cat-icon img{width:24px;height:24px}.home-cat-name{font-size:9px}.listing-card-price{font-size:14px}.listing-card-title{font-size:11px}.listing-card-meta{gap:4px;font-size:9px}.footer-grid{grid-template-columns:1fr;gap:16px}.auth-card{padding:20px 16px}.form-group input,.form-group select,.form-group textarea{padding:10px 12px;font-size:13px}.btn-primary{padding:12px;font-size:14px}.sort-bar{flex-direction:column;align-items:flex-start;gap:8px}.sort-bar select{width:100%}.subcat-item{gap:8px;padding:12px}.subcat-title{font-size:13px}}