:root{--primary:#4f46e5;--primary-hover:#4338ca;--bg:#f8fafc;--card:#fff;--text:#1e293b;--text-secondary:#64748b;--border:#e2e8f0;--danger:#ef4444;--danger-hover:#dc2626;--success:#22c55e}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.main-content{max-width:1200px;margin:0 auto;padding:2rem 1rem}.auth-container{background:var(--card);border-radius:12px;max-width:420px;margin:2rem auto;padding:2rem;box-shadow:0 1px 3px #0000001a}.auth-container h2{text-align:center;color:var(--primary);margin-bottom:1.5rem}.form-group{margin-bottom:1rem}.form-group label{color:var(--text-secondary);margin-bottom:.35rem;font-size:.9rem;font-weight:500;display:block}.form-group input,.form-group textarea,.form-group select{border:1px solid var(--border);border-radius:8px;width:100%;padding:.65rem .75rem;font-size:.95rem;transition:border-color .2s}.form-group input:focus,.form-group textarea:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #4f46e51a}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:.5rem;padding:.65rem 1.25rem;font-size:.95rem;font-weight:500;transition:background .2s,transform .1s;display:inline-flex}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;width:100%}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.btn-secondary{background:var(--border);color:var(--text)}.btn-secondary:hover:not(:disabled){background:#cbd5e1}.btn-sm{padding:.4rem .75rem;font-size:.85rem}.auth-links{text-align:center;margin-top:1rem;font-size:.9rem}.auth-links a{color:var(--primary);text-decoration:none}.auth-links a:hover{text-decoration:underline}.navbar{background:var(--card);border-bottom:1px solid var(--border);z-index:100;justify-content:space-between;align-items:center;padding:.75rem 1.5rem;display:flex;position:sticky;top:0}.navbar-brand{color:var(--primary);align-items:center;gap:.5rem;font-size:1.25rem;font-weight:700;text-decoration:none;display:flex}.navbar-links{align-items:center;gap:1rem;display:flex}.navbar-links a{color:var(--text-secondary);font-size:.9rem;font-weight:500;text-decoration:none;transition:color .2s}.navbar-links a:hover{color:var(--primary)}.navbar-user{align-items:center;gap:.75rem;display:flex}.navbar-avatar{object-fit:cover;border:2px solid var(--border);border-radius:50%;width:32px;height:32px}.dashboard-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem;display:flex}.dashboard-header h2{color:var(--text)}.shoes-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem;display:grid}.shoe-card{background:var(--card);border-radius:12px;transition:transform .2s,box-shadow .2s;overflow:hidden;box-shadow:0 1px 3px #0000001a}.shoe-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.shoe-card-image{object-fit:cover;background:var(--bg);width:100%;height:200px}.shoe-card-body{padding:1rem}.shoe-card-body h3{margin-bottom:.25rem;font-size:1.1rem}.shoe-card-body .brand{color:var(--text-secondary);margin-bottom:.5rem;font-size:.85rem}.shoe-card-body .details{justify-content:space-between;align-items:center;margin-bottom:.5rem;display:flex}.shoe-card-body .price{color:var(--primary);font-size:1.1rem;font-weight:700}.shoe-card-body .size{color:var(--text-secondary);background:var(--bg);border-radius:4px;padding:.2rem .6rem;font-size:.85rem}.shoe-card-body .description{color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:.75rem;font-size:.85rem;display:-webkit-box;overflow:hidden}.shoe-card-actions{gap:.5rem;display:flex}.no-image-placeholder{background:var(--bg);width:100%;height:200px;color:var(--text-secondary);justify-content:center;align-items:center;font-size:3rem;display:flex}.modal-overlay{z-index:200;background:#00000080;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.modal{background:var(--card);border-radius:12px;width:100%;max-width:500px;max-height:90vh;padding:1.5rem;overflow-y:auto}.modal h3{color:var(--primary);margin-bottom:1rem}.modal-actions{gap:.75rem;margin-top:1rem;display:flex}.profile-container{background:var(--card);border-radius:12px;max-width:600px;margin:0 auto;padding:2rem;box-shadow:0 1px 3px #0000001a}.profile-container h2{color:var(--primary);margin-bottom:1.5rem}.profile-avatar-section{align-items:center;gap:1.5rem;margin-bottom:1.5rem;display:flex}.profile-avatar{object-fit:cover;border:3px solid var(--border);border-radius:50%;width:80px;height:80px}.profile-avatar-placeholder{background:var(--bg);width:80px;height:80px;color:var(--text-secondary);border:3px solid var(--border);border-radius:50%;justify-content:center;align-items:center;font-size:2rem;display:flex}.image-preview{border-radius:8px;max-width:100%;max-height:150px;margin-top:.5rem}.alert{border-radius:8px;margin-bottom:1rem;padding:.75rem 1rem;font-size:.9rem}.alert-success{color:#166534;background:#dcfce7}.alert-error{color:#991b1b;background:#fee2e2}@media (width<=640px){.main-content{padding:1rem .75rem}.shoes-grid{grid-template-columns:1fr}.dashboard-header{flex-direction:column;align-items:stretch}.navbar{padding:.5rem 1rem}}