:root{--primary: #2563eb;--dark: #1e293b;--light: #f8fafc;--white: #ffffff;--danger: #ef4444}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--light);color:var(--dark)}.navbar{background:var(--white);padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 4px 6px -1px #0000001a}.logo{font-weight:800;font-size:1.5rem;color:var(--dark);letter-spacing:-.05em}.links a{margin-left:20px;text-decoration:none;color:#64748b;font-weight:600;transition:color .2s}.links a:hover{color:var(--primary)}.showroom,.admin-panel,.detail-page,.login-box{max-width:1000px;margin:40px auto;padding:20px}h1,h2,h3{margin-top:0}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:2rem;margin-top:2rem}.card{background:var(--white);border-radius:12px;overflow:hidden;box-shadow:0 4px 6px -1px #0000000d;transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-5px);box-shadow:0 10px 15px -3px #0000001a}.card img{width:100%;height:200px;object-fit:cover}.card-details{padding:1.5rem}.price{font-size:1.5rem;font-weight:800;color:var(--primary);margin:10px 0}button,.btn-view,.btn-save,.btn-call{display:inline-block;background:var(--dark);color:#fff;padding:10px 20px;border-radius:8px;text-decoration:none;font-weight:600;border:none;cursor:pointer;text-align:center;width:100%;box-sizing:border-box}.btn-view:hover{background:var(--primary)}.btn-call{background:#10b981;font-size:1.2rem;padding:15px}.btn-logout{background:transparent;color:#ef4444;width:auto;padding:5px 10px}input,textarea{width:100%;padding:12px;margin-bottom:12px;border:1px solid #e2e8f0;border-radius:8px;box-sizing:border-box;font-size:1rem}input:focus,textarea:focus{outline:2px solid var(--primary);border-color:transparent}.list-item{background:var(--white);padding:1rem;margin-bottom:.5rem;border-radius:8px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 1px 2px #0000000d}