:root{--bg:#f7f7f8;--card:#ffffff;--muted:#666;--accent:#d9cbb6;--dark:#0b0b0b}
*{box-sizing:border-box}body{font-family:Inter,system-ui,Arial,Helvetica,sans-serif;margin:0;background:var(--bg);color:var(--dark);-webkit-font-smoothing:antialiased}
.container{max-width:1100px;margin:0 auto;padding:20px}
header{background:#fff;border-bottom:1px solid #eee;position:sticky;top:0;z-index:20;padding:12px 20px}
header h1{margin:0;font-size:20px;display:inline-block}
header nav{float:right}
header nav a{font-size:14px;color:var(--muted);text-decoration:none;padding:8px;border-radius:8px}
main{padding:24px}
.productos{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.productos{grid-template-columns:repeat(2,1fr)}}
@media(min-width:992px){.productos{grid-template-columns:repeat(4,1fr)}}
.producto{background:var(--card);border-radius:12px;overflow:hidden;border:1px solid #eee;display:flex;flex-direction:column;box-shadow:0 2px 6px rgba(0,0,0,0.03)}
.producto .img{height:180px;background:#fafafa;display:flex;align-items:center;justify-content:center}
.producto img{width:100%;height:100%;object-fit:cover}
.producto .body{padding:12px;display:flex;flex-direction:column;gap:8px;flex:1}
.producto h3{margin:0;font-size:16px}
.precio{font-weight:700;color:#111}
.whatsapp{display:inline-block;padding:8px 10px;border-radius:8px;background:#25D366;color:#fff;text-decoration:none;margin-top:8px}
footer{padding:18px 0;text-align:center;color:var(--muted);margin-top:24px;border-top:1px solid #eee;background:#fff}
#admin-button{position:fixed;right:16px;bottom:16px;width:44px;height:44px;border-radius:22px;background:#111;color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,0.12);cursor:pointer;z-index:60}
.modal{position:fixed;inset:0;background:rgba(0,0,0,0.45);display:flex;align-items:center;justify-content:center;z-index:80;padding:12px}
.card-form{background:#fff;padding:16px;border-radius:12px;max-width:720px;width:100%}
.input,textarea{width:100%;padding:8px;border-radius:8px;border:1px solid #ddd;margin-top:6px}
.form-row{display:flex;gap:8px}
.form-row .col{flex:1}
.btn{display:inline-block;padding:8px 12px;border-radius:8px;border:1px solid #ddd;background:#fff;text-decoration:none;color:inherit;font-size:14px}
.btn.primary{background:#111;color:#fff;border:none}
.small{font-size:13px;color:var(--muted)}