.downloads-page{padding:2rem 0}.downloads-page .container{max-width:800px;margin:0 auto;padding:0 1rem}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.page-header h1{margin:0;font-size:2rem;color:var(--text-primary)}.alert{padding:1rem;border-radius:8px;margin-bottom:1rem}.alert-error{background-color:#fee2e2;color:#dc2626;border:1px solid #fecaca}.alert-success{background-color:#dcfce7;color:#16a34a;border:1px solid #bbf7d0}.upload-form{margin-bottom:2rem;padding:1.5rem}.upload-form h2{margin-top:0;margin-bottom:1.5rem;font-size:1.25rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-primary)}.form-group input[type=text],.form-group textarea{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:8px;font-size:1rem;font-family:inherit}.form-group input[type=text]:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #2563eb1a}.form-group input[type=file]{padding:.5rem 0}.file-info{margin-top:.5rem;font-size:.875rem;color:var(--text-secondary)}.loading{text-align:center;padding:3rem}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}.empty-state{text-align:center;padding:3rem;color:var(--text-secondary)}.downloads-list{display:flex;flex-direction:column;gap:1rem}.download-item{padding:1.5rem}.download-content{display:flex;flex-direction:column;gap:.75rem}.download-title{margin:0;font-size:1.125rem;color:var(--text-primary)}.download-actions{display:flex;gap:.75rem;align-items:center}.download-description{margin:0;color:var(--text-secondary);font-size:.9375rem;line-height:1.5}.download-meta{display:flex;gap:1rem;font-size:.8125rem;color:var(--text-tertiary)}.file-name{font-family:monospace}.btn{padding:.75rem 1.25rem;border:none;border-radius:8px;font-size:.9375rem;font-weight:500;cursor:pointer;transition:all .2s;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-danger{background-color:#dc2626;color:#fff}.btn-danger:hover{background-color:#b91c1c}.btn-sm{padding:.5rem .75rem;font-size:.8125rem}.btn:disabled{opacity:.6;cursor:not-allowed}.card{background:#fff;border-radius:12px;box-shadow:0 1px 3px #0000001a;border:1px solid var(--border-color)}@media(max-width:640px){.page-header{flex-direction:column;align-items:flex-start;gap:1rem}.download-actions{flex-direction:column;align-items:flex-start}}:root{--primary: #2563eb;--primary-dark: #1d4ed8;--secondary: #64748b;--success: #22c55e;--danger: #ef4444;--warning: #f59e0b;--background: #f8fafc;--surface: #ffffff;--text: #1e293b;--text-light: #64748b;--border: #e2e8f0;--shadow: 0 1px 3px 0 rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1);--radius: 8px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--background);color:var(--text);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:0 20px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border:none;border-radius:var(--radius);font-weight:500;cursor:pointer;transition:all .2s;gap:8px}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--background)}.btn-danger{background:var(--danger);color:#fff}.input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;transition:border-color .2s}.input:focus{outline:none;border-color:var(--primary)}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-content{display:flex;align-items:center;justify-content:space-between;padding:16px 0;gap:24px}.logo{font-size:24px;font-weight:700;color:var(--primary);text-decoration:none}.logo span{color:var(--text)}.search-bar{flex:1;max-width:500px;position:relative}.search-bar input{width:100%;padding:10px 16px 10px 44px;border:1px solid var(--border);border-radius:24px;font-size:14px}.search-bar input:focus{outline:none;border-color:var(--primary)}.search-bar:before{content:"🔍";position:absolute;left:16px;top:50%;transform:translateY(-50%);font-size:16px}.header-nav{display:flex;align-items:center;gap:16px}.hero{background:linear-gradient(135deg,var(--primary) 0%,#1e40af 100%);color:#fff;padding:60px 0;text-align:center}.hero h1{font-size:48px;font-weight:700;margin-bottom:16px}.hero p{font-size:18px;opacity:.9;max-width:600px;margin:0 auto 32px}.hero .btn{background:#fff;color:var(--primary);padding:14px 32px;font-size:16px}.hero .btn:hover{background:var(--background)}.categories{padding:40px 0}.section-title{font-size:24px;font-weight:600;margin-bottom:24px}.categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:16px}.category-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:center;cursor:pointer;transition:all .2s}.category-card:hover{border-color:var(--primary);box-shadow:var(--shadow)}.category-icon{font-size:32px;margin-bottom:8px}.category-name{font-weight:500;font-size:14px}.listings{padding:40px 0}.listings-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.listing-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}.listing-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.listing-image{width:100%;height:200px;object-fit:cover;background:var(--background);display:flex;align-items:center;justify-content:center;font-size:48px}.listing-content{padding:16px}.listing-title{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--text)}.listing-price{font-size:20px;font-weight:700;color:var(--primary);margin-bottom:8px}.listing-meta{display:flex;justify-content:space-between;font-size:13px;color:var(--text-light)}.listing-type{display:inline-block;padding:4px 8px;border-radius:4px;font-size:12px;font-weight:500;text-transform:uppercase}.listing-type.sell{background:#dcfce7;color:#166534}.listing-type.rent{background:#dbeafe;color:#1e40af}.listing-type.offer{background:#fef3c7;color:#92400e}.listing-type.request{background:#f3e8ff;color:#7c3aed}.form-page{min-height:calc(100vh - 64px);display:flex;align-items:center;justify-content:center;padding:40px 20px}.form-container{background:var(--surface);padding:40px;border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;max-width:420px}.form-title{font-size:24px;font-weight:600;text-align:center;margin-bottom:32px}.form-group{margin-bottom:20px}.form-label{display:block;font-weight:500;margin-bottom:8px;font-size:14px}.form-footer{text-align:center;margin-top:24px;font-size:14px;color:var(--text-light)}.form-footer a{color:var(--primary);text-decoration:none}.form-footer a:hover{text-decoration:underline}.listing-detail{padding:40px 0}.listing-detail-grid{display:grid;grid-template-columns:1fr 400px;gap:40px}@media(max-width:768px){.listing-detail-grid{grid-template-columns:1fr}}.listing-detail-image{width:100%;height:400px;object-fit:cover;border-radius:var(--radius);background:var(--background)}.listing-detail-info{background:var(--surface);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow)}.listing-detail-price{font-size:32px;font-weight:700;color:var(--primary);margin-bottom:16px}.listing-detail-title{font-size:24px;font-weight:600;margin-bottom:16px}.listing-detail-desc{color:var(--text-light);margin-bottom:24px}.seller-info{display:flex;align-items:center;gap:12px;padding:16px;background:var(--background);border-radius:var(--radius);margin-bottom:24px}.seller-avatar{width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:18px}.messages-list{padding:40px 0}.message-card{background:var(--surface);padding:16px;border-radius:var(--radius);margin-bottom:12px;cursor:pointer;transition:background .2s}.message-card:hover{background:var(--background)}.message-header{display:flex;justify-content:space-between;margin-bottom:8px}.message-user{font-weight:600}.message-time{font-size:12px;color:var(--text-light)}.message-preview{color:var(--text-light);font-size:14px}.footer{background:var(--text);color:#fff;padding:40px 0;margin-top:60px}.footer-content{display:flex;justify-content:space-between;align-items:center}.footer-links{display:flex;gap:24px}.footer-links a{color:#fff;text-decoration:none;opacity:.8}.footer-links a:hover{opacity:1}.text-center{text-align:center}.mt-4{margin-top:16px}.mb-4{margin-bottom:16px}.flex{display:flex}.gap-2{gap:8px}.items-center{align-items:center}.justify-between{justify-content:space-between}.loading{display:flex;align-items:center;justify-content:center;min-height:200px}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:60px 20px;color:var(--text-light)}.empty-state-icon{font-size:64px;margin-bottom:16px}.empty-state h3{font-size:20px;margin-bottom:8px;color:var(--text)}.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px}.alert-error{background:#fef2f2;color:var(--danger);border:1px solid #fecaca}.alert-success{background:#f0fdf4;color:var(--success);border:1px solid #bbf7d0}