:root {
  --bg:#0f1115; --card:#1b1e24; --accent:#ffcc33;
  --text:#e5e5e5; --muted:#a0a0a0; --ring:#2c3038;
  font-family:"Inter",system-ui,Segoe UI,Roboto,sans-serif;
}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);}
header{background:#16181d;border-bottom:1px solid var(--ring);
  padding:18px 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;}
h1{margin:0;font-size:22px;color:var(--accent);}
nav a{color:var(--text);margin-left:12px;text-decoration:none;font-size:14px;}
nav a:hover{color:var(--accent);}
main{padding:20px;}
.ads{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-bottom:20px;}
.ads img{width:100%;height:120px;object-fit:cover;border-radius:10px;box-shadow:0 0 8px #0006;}
.filters{background:var(--card);padding:12px 16px;border-radius:12px;margin-bottom:20px;display:flex;gap:10px;align-items:center;flex-wrap:wrap;}
.filters input,.filters select,button{background:#22252b;border:1px solid var(--ring);color:var(--text);padding:6px 10px;border-radius:8px;}
button{cursor:pointer;}button:hover{background:#2d3139;}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;}
.card{background:var(--card);border:1px solid var(--ring);border-radius:14px;padding:14px;box-shadow:0 2px 8px #0006;}
.card h2{margin-top:0;font-size:16px;color:var(--accent);}
.card ul{margin:0;padding-left:18px;}
.card li{margin-bottom:3px;}
.card.error{border:1px solid #c33;color:#fbb;}
.res-dia p{margin:4px 0;}
footer{text-align:center;padding:16px;font-size:13px;color:var(--muted);}