:root{--bg:#0b0e14;--card:#11151f;--muted:#8b98a5;--text:#e6ebf2;--primary:#36c2ff;--border:#1e2430}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji;}
.container{max-width:1100px;margin:0 auto;padding:16px}
.brand{font-weight:700;font-size:20px}
header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
nav a,nav span{color:var(--muted);text-decoration:none;margin-left:12px}
nav .active{color:var(--text)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:16px}
.card{display:flex;gap:12px;padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--card);text-decoration:none;color:inherit;align-items:center}
.card:hover{border-color:var(--primary)}
.card-icon{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,#3b82f6,#06b6d4);display:flex;align-items:center;justify-content:center;font-weight:700}
.card-title{font-weight:600}
.card-meta{color:var(--muted);font-size:12px;margin-top:4px}
.card-desc{color:var(--muted);font-size:12px;margin-top:4px}
.card-enter{margin-left:auto;color:var(--primary)}
.footer{color:var(--muted);font-size:12px;padding-bottom:32px}

.tag{border:1px solid var(--border);padding:6px 10px;border-radius:999px;cursor:pointer;color:var(--muted);user-select:none}
.tag-active{background:var(--primary);border-color:var(--primary);color:#001018}

.tool-panel{margin-top:24px}
.tool-title{font-size:22px;font-weight:700}
.tool-desc{color:var(--muted);margin:8px 0 16px}
.tool-body{display:grid;grid-template-columns:1fr;gap:12px}
textarea{min-height:160px;padding:12px;border-radius:10px;border:1px solid var(--border);background:#0f1420;color:var(--text);resize:vertical}
.controls{display:flex;flex-wrap:wrap;gap:12px;align-items:end}
label{display:flex;flex-direction:column;gap:6px;font-size:12px;color:var(--muted)}
input{height:36px;border-radius:8px;border:1px solid var(--border);background:#0f1420;color:var(--text);padding:0 10px}
.buttons{display:flex;gap:8px}
.btn{background:var(--primary);border:none;color:#001018;padding:10px 16px;border-radius:8px;cursor:pointer}
.btn:hover{filter:brightness(1.1)}

@media(min-width:900px){
  .tool-body{grid-template-columns:1fr 320px 1fr}
}