:root { --bg:#0f172a; --card:#1e293b; --accent:#38bdf8; --text:#e2e8f0; --muted:#94a3b8; }
* { box-sizing:border-box; }
body { margin:0; font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif; background:var(--bg); color:var(--text); line-height:1.6; }
a { color:var(--accent); text-decoration:none; }
header { background:#111c33; padding:14px 20px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; }
header .brand { font-weight:700; font-size:1.2rem; }
nav a { margin-left:14px; color:var(--muted); }
main { max-width:900px; margin:0 auto; padding:24px 20px; }
h1 { font-size:1.7rem; }
.grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:16px; }
.card { background:var(--card); border-radius:12px; padding:18px; margin:16px 0; }
.tool-card { display:block; }
.tool-card h3 { margin:0 0 6px; }
.tool-card p { color:var(--muted); margin:0; font-size:.9rem; }
textarea, input[type=text], input[type=number] { width:100%; padding:12px; border-radius:8px; border:1px solid #334155; background:#0b1220; color:var(--text); font-family:inherit; font-size:1rem; }
label { display:block; margin:8px 0; color:var(--muted); }
.row { display:flex; flex-wrap:wrap; gap:10px; align-items:center; margin-top:10px; }
.btn { background:var(--accent); color:#04121f; border:0; padding:10px 16px; border-radius:8px; font-weight:600; cursor:pointer; }
.btn.ghost { background:transparent; color:var(--accent); border:1px solid var(--accent); }
.stats { display:grid; grid-template-columns:repeat(auto-fit,minmax(100px,1fr)); gap:10px; margin-top:16px; text-align:center; }
.stats span { font-size:1.6rem; font-weight:700; color:var(--accent); display:block; }
.stats small { color:var(--muted); }
.output { background:#0b1220; border-radius:8px; padding:14px; margin-top:12px; white-space:pre-wrap; word-break:break-word; }
.qr-box { text-align:center; margin-top:16px; }
.qr-box img { background:#fff; padding:8px; border-radius:8px; }
.ad { background:#0b1220; border:1px dashed #334155; color:var(--muted); text-align:center; padding:18px; border-radius:10px; margin:18px 0; font-size:.85rem; }
footer { border-top:1px solid #1e293b; color:var(--muted); padding:24px 20px; text-align:center; font-size:.85rem; }
footer a { color:var(--muted); margin:0 8px; }
.prose { line-height:1.75; }
.prose h2 { margin-top:1.4em; font-size:1.25rem; }
.prose h3 { font-size:1.05rem; color:var(--accent); }
.prose p, .prose li { color:#cbd5e1; }
.prose details { border-top:1px solid #334155; padding:10px 0; }
.prose summary { cursor:pointer; font-weight:600; color:var(--text); }
.prose details p { margin:8px 0 0; }
.cookie-bar { position:fixed; left:0; right:0; bottom:0; background:#111c33; color:var(--text);
  padding:12px 18px; display:flex; gap:12px; align-items:center; justify-content:center;
  flex-wrap:wrap; font-size:.85rem; border-top:1px solid #334155; z-index:50; }
select { padding:8px; border-radius:8px; border:1px solid #334155; background:#0b1220; color:var(--text); }
.conv-table { width:100%; border-collapse:collapse; margin-top:8px; }
.conv-table th, .conv-table td { text-align:left; padding:8px 12px; border-bottom:1px solid #334155; color:#cbd5e1; }
.conv-table th { color:var(--text); }