@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-card:#1a1a2e;--bg-card-hover:#1e1e35;--bg-glass:#1a1a2eb3;--bg-input:#16162a;--accent-primary:#6c5ce7;--accent-secondary:#a29bfe;--accent-gradient:linear-gradient(135deg, #6c5ce7, #a29bfe);--accent-gradient-hover:linear-gradient(135deg, #5a4bd6, #8f87fd);--accent-green:#00b894;--accent-orange:#fdcb6e;--accent-red:#e74c3c;--accent-blue:#74b9ff;--text-primary:#e8e8f0;--text-secondary:#9999b3;--text-muted:#666680;--text-accent:#a29bfe;--border-color:#6c5ce726;--border-hover:#6c5ce759;--shadow-card:0 4px 24px #0000004d;--shadow-hover:0 8px 40px #6c5ce733;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--transition:all .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,textarea,select{outline:none;font-family:inherit}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--accent-primary);border-radius:3px}.navbar{z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);background:#0a0a0fd9;justify-content:space-between;align-items:center;height:64px;padding:0 2rem;display:flex;position:fixed;top:0;left:0;right:0}.navbar-brand{background:var(--accent-gradient);-webkit-text-fill-color:transparent;letter-spacing:-.5px;-webkit-background-clip:text;background-clip:text;font-size:1.5rem;font-weight:800}.navbar-search{flex:0 400px;position:relative}.navbar-search input{background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;color:var(--text-primary);transition:var(--transition);padding:10px 16px 10px 40px;font-size:.9rem}.navbar-search input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6c5ce726}.navbar-search input::placeholder{color:var(--text-muted)}.navbar-search .search-icon{color:var(--text-muted);font-size:.9rem;position:absolute;top:50%;left:14px;transform:translateY(-50%)}.navbar-actions{align-items:center;gap:12px;display:flex}.navbar-link{color:var(--text-secondary);border-radius:var(--radius-sm);transition:var(--transition);padding:8px 14px;font-size:.9rem;font-weight:500}.navbar-link:hover{color:var(--text-primary);background:var(--bg-card)}.navbar-link.active{color:var(--accent-secondary)}.btn{border-radius:var(--radius-md);transition:var(--transition);cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:.9rem;font-weight:600;display:inline-flex}.btn-primary{background:var(--accent-gradient);color:#fff;border:none}.btn-primary:hover{background:var(--accent-gradient-hover);transform:translateY(-1px);box-shadow:0 4px 16px #6c5ce766}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{border-color:var(--accent-primary);background:var(--bg-card-hover)}.btn-danger{color:var(--accent-red);background:#e74c3c26;border:1px solid #e74c3c33}.btn-danger:hover{background:#e74c3c40}.btn-sm{padding:6px 14px;font-size:.8rem}.btn-full{width:100%}.main-content{min-height:100vh;padding-top:80px}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.page-header{margin-bottom:2rem}.page-header h1{background:var(--accent-gradient);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:2rem;font-weight:700}.page-header p{color:var(--text-secondary);font-size:1rem}.listing-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;display:grid}.listing-card{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);transition:var(--transition);cursor:pointer;overflow:hidden}.listing-card:hover{box-shadow:var(--shadow-hover);border-color:var(--border-hover);transform:translateY(-4px)}.listing-card-image{object-fit:cover;background:var(--bg-secondary);width:100%;height:200px}.listing-card-body{padding:16px}.listing-card-title{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;margin-bottom:8px;font-size:1rem;font-weight:600;overflow:hidden}.listing-card-price{color:var(--accent-secondary);margin-bottom:8px;font-size:1.3rem;font-weight:700}.listing-card-meta{color:var(--text-muted);justify-content:space-between;align-items:center;font-size:.8rem;display:flex}.listing-card-location{align-items:center;gap:4px;display:flex}.form-group{margin-bottom:1.25rem}.form-group label{color:var(--text-secondary);margin-bottom:6px;font-size:.85rem;font-weight:500;display:block}.form-control{background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;color:var(--text-primary);transition:var(--transition);padding:12px 16px;font-size:.95rem}.form-control:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6c5ce726}.form-control::placeholder{color:var(--text-muted)}textarea.form-control{resize:vertical;min-height:100px}select.form-control{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239999b3' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-position:right 14px center;background-repeat:no-repeat}.auth-container{justify-content:center;align-items:center;min-height:100vh;padding:2rem;display:flex}.auth-card{background:var(--bg-card);border-radius:var(--radius-xl);border:1px solid var(--border-color);width:100%;max-width:440px;box-shadow:var(--shadow-card);padding:2.5rem}.auth-card h1{background:var(--accent-gradient);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:6px;font-size:1.75rem;font-weight:700}.auth-card .subtitle{color:var(--text-secondary);margin-bottom:2rem;font-size:.9rem}.auth-footer{text-align:center;color:var(--text-muted);margin-top:1.5rem;font-size:.85rem}.auth-footer a{color:var(--accent-secondary);font-weight:500}.auth-footer a:hover{text-decoration:underline}.error-message{color:var(--accent-red);border-radius:var(--radius-sm);background:#e74c3c1a;border:1px solid #e74c3c33;margin-bottom:1rem;padding:10px 16px;font-size:.85rem}.detail-container{grid-template-columns:1fr 380px;gap:2rem;padding:2rem 0;display:grid}.detail-image-container{border-radius:var(--radius-lg);background:var(--bg-secondary);overflow:hidden}.detail-image{object-fit:cover;width:100%;max-height:500px}.detail-info{align-self:start;position:sticky;top:100px}.detail-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin-bottom:1rem;padding:1.5rem}.detail-price{color:var(--accent-secondary);margin-bottom:4px;font-size:2rem;font-weight:800}.detail-title{margin-bottom:16px;font-size:1.3rem;font-weight:600}.detail-meta{color:var(--text-secondary);flex-direction:column;gap:10px;font-size:.9rem;display:flex}.detail-meta-item{align-items:center;gap:8px;display:flex}.detail-description{color:var(--text-secondary);margin-top:1.5rem;line-height:1.8}.seller-card{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);align-items:center;gap:12px;padding:16px;display:flex}.seller-avatar{background:var(--accent-gradient);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;font-size:1.1rem;font-weight:700;display:flex}.seller-info h3{font-size:1rem;font-weight:600}.seller-info p{color:var(--text-muted);font-size:.8rem}.post-container{max-width:680px;margin:0 auto;padding:2rem 0}.post-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:2rem}.form-row{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.chat-layout{grid-template-columns:340px 1fr;gap:0;height:calc(100vh - 80px);display:grid}.chat-sidebar{background:var(--bg-secondary);border-right:1px solid var(--border-color);overflow-y:auto}.chat-sidebar-header{border-bottom:1px solid var(--border-color);padding:20px}.chat-sidebar-header h2{font-size:1.2rem;font-weight:700}.chat-item{cursor:pointer;transition:var(--transition);border-bottom:1px solid var(--border-color);align-items:center;gap:12px;padding:14px 20px;display:flex}.chat-item:hover,.chat-item.active{background:var(--bg-card)}.chat-item-avatar{background:var(--accent-gradient);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-weight:600;display:flex}.chat-item-info h4{margin-bottom:2px;font-size:.9rem;font-weight:600}.chat-item-info p{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;max-width:200px;font-size:.8rem;overflow:hidden}.chat-main{flex-direction:column;height:100%;display:flex}.chat-header{border-bottom:1px solid var(--border-color);background:var(--bg-secondary);padding:16px 20px}.chat-header h3{font-size:1rem;font-weight:600}.chat-header p{color:var(--text-muted);font-size:.8rem}.chat-messages{flex-direction:column;flex:1;gap:12px;padding:20px;display:flex;overflow-y:auto}.message{border-radius:var(--radius-md);max-width:70%;padding:12px 16px;font-size:.9rem;line-height:1.5}.message.sent{background:var(--accent-primary);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.message.received{background:var(--bg-card);border:1px solid var(--border-color);border-bottom-left-radius:4px;align-self:flex-start}.message-time{opacity:.6;margin-top:4px;font-size:.7rem}.chat-input-container{border-top:1px solid var(--border-color);background:var(--bg-secondary);gap:10px;padding:16px 20px;display:flex}.chat-input-container input{background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);flex:1;padding:12px 16px;font-size:.9rem}.chat-input-container input:focus{border-color:var(--accent-primary)}.profile-container{max-width:800px;margin:0 auto;padding:2rem 0}.profile-header{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);align-items:center;gap:24px;margin-bottom:2rem;padding:2rem;display:flex}.profile-avatar{background:var(--accent-gradient);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:80px;height:80px;font-size:2rem;font-weight:700;display:flex}.profile-details h1{margin-bottom:4px;font-size:1.5rem;font-weight:700}.profile-details p{color:var(--text-secondary);font-size:.9rem}.profile-details .profile-meta{color:var(--text-muted);gap:16px;margin-top:8px;font-size:.85rem;display:flex}.my-listing-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:var(--transition);align-items:center;gap:16px;margin-bottom:12px;padding:16px;display:flex}.my-listing-item:hover{border-color:var(--border-hover)}.my-listing-image{border-radius:var(--radius-sm);object-fit:cover;background:var(--bg-secondary);flex-shrink:0;width:100px;height:80px}.my-listing-info{flex:1}.my-listing-info h3{margin-bottom:4px;font-size:1rem;font-weight:600}.my-listing-info .price{color:var(--accent-secondary);font-size:1.1rem;font-weight:700}.my-listing-info .meta{color:var(--text-muted);margin-top:4px;font-size:.8rem}.my-listing-actions{gap:8px;display:flex}.empty-state{text-align:center;color:var(--text-muted);padding:4rem 2rem}.empty-state .icon{margin-bottom:1rem;font-size:3rem}.empty-state h3{color:var(--text-secondary);margin-bottom:8px;font-size:1.2rem;font-weight:600}.empty-state p{font-size:.9rem}.spinner{justify-content:center;align-items:center;padding:3rem;display:flex}.spinner:after{content:"";border:3px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;width:36px;height:36px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.category-chips{flex-wrap:wrap;gap:10px;margin-bottom:2rem;display:flex}.chip{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;transition:var(--transition);border-radius:50px;padding:8px 18px;font-size:.85rem;font-weight:500}.chip:hover,.chip.active{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}@media (width<=768px){.navbar{padding:0 1rem}.navbar-search{display:none}.detail-container,.chat-layout{grid-template-columns:1fr}.chat-sidebar{display:none}.form-row{grid-template-columns:1fr}.listing-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.profile-header{text-align:center;flex-direction:column}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:.4s ease-out fadeIn}.toast{background:var(--accent-green);color:#fff;border-radius:var(--radius-md);z-index:200;padding:14px 24px;font-size:.9rem;font-weight:500;animation:.3s ease-out slideUpFade;position:fixed;bottom:24px;right:24px;box-shadow:0 4px 24px #00b8944d}@keyframes slideUpFade{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}