:root{--bg:#0a0a0a;--panel:#111;--line:#252525;--gold:#fbbf24;--muted:#a1a1aa}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:#fff;font-family:Arial,sans-serif}
a{color:inherit;text-decoration:none}
.layout{display:grid;grid-template-columns:280px 1fr;min-height:100vh}
.side{background:#050505;border-right:1px solid #222;padding:22px;position:sticky;top:0;height:100vh;overflow:auto}
.side h2{margin:0 0 6px}
.side p{margin:0 0 20px;color:var(--muted);font-size:13px}
.side a{display:flex;gap:10px;align-items:center;color:#ddd;padding:12px 14px;border-radius:14px;margin-bottom:6px}
.side a:hover,.side a.active{background:#1c1c1c;color:var(--gold)}
.main{padding:28px;max-width:1280px;width:100%}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:22px;margin-bottom:20px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{background:#111;border:1px solid #252525;border-radius:22px;padding:20px}
.stat b{font-size:26px;color:var(--gold)}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.input,textarea,select{width:100%;padding:12px;border-radius:12px;border:1px solid #333;background:#080808;color:#fff;margin-top:6px}
textarea{min-height:120px}
label{font-size:14px;color:#ddd}
.btn{border:0;background:var(--gold);color:#050505;font-weight:900;border-radius:12px;padding:12px 18px;cursor:pointer;display:inline-flex;align-items:center;gap:8px}
.btn-dark{background:#232323;color:#fff}
.btn-red{background:#ef4444;color:white}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid #242424;padding:12px;text-align:left;vertical-align:top}
.msg{background:#064e3b;color:#d1fae5;padding:12px;border-radius:12px;margin-bottom:15px}
.err{background:#7f1d1d;color:#fee2e2;padding:12px;border-radius:12px;margin-bottom:15px}
.preview{max-width:180px;border-radius:16px;border:1px solid #333}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.tab{padding:9px 12px;border-radius:999px;background:#1b1b1b;color:#ddd;border:1px solid #2a2a2a}
.help{color:var(--muted);font-size:13px;line-height:1.6}
@media(max-width:980px){.layout{grid-template-columns:1fr}.side{position:relative;height:auto}.cards,.grid,.grid3{grid-template-columns:1fr}.main{padding:18px}}