:root{
  --bg:#0f1115;
  --panel:#ffffff;
  --text:#101010;
  --muted:#606060;
  --accent:#fa6600;
  --border:1px solid rgba(0,0,0,0.12);
  --shadow:0 10px 30px rgba(0,0,0,0.15);
}
*{box-sizing:border-box}
body{margin:0;background:#f4f5f7;color:var(--text);font-family:Arial,Helvetica,sans-serif}
header{background:#111;color:#fff;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}
header h1{margin:0;font-size:18px;letter-spacing:0.08em;text-transform:uppercase}
header .user{font-size:12px;color:#ddd}
nav{background:#1b1f26;padding:10px 24px;display:flex;gap:12px;flex-wrap:wrap}
nav a{color:#fff;text-decoration:none;font-size:12px;letter-spacing:0.08em;text-transform:uppercase;padding:6px 8px;border-radius:999px;background:rgba(255,255,255,0.08)}
nav a.active{background:var(--accent)}
main{max-width:1200px;margin:20px auto 60px;padding:0 20px}
.card{background:#fff;border:var(--border);border-radius:12px;padding:18px;box-shadow:var(--shadow);margin-bottom:18px}
.card h2{margin:0 0 12px;font-size:16px;letter-spacing:0.06em;text-transform:uppercase}
.grid{display:grid;gap:12px}
.grid.two{grid-template-columns:repeat(2,1fr)}
.grid.three{grid-template-columns:repeat(3,1fr)}
label{font-size:11px;letter-spacing:0.08em;text-transform:uppercase;color:var(--muted)}
input[type="text"],input[type="email"],input[type="password"],input[type="date"],input[type="url"],textarea,select{width:100%;padding:10px 12px;border-radius:10px;border:1px solid rgba(0,0,0,0.2);font-size:14px}
textarea{min-height:120px}
button,.btn{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:10px 14px;font-size:12px;letter-spacing:0.06em;text-transform:uppercase;cursor:pointer}
button.secondary,.btn.secondary{background:#fff;color:#111;border:var(--border)}
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th,.table td{padding:8px;border-bottom:1px solid rgba(0,0,0,0.08);vertical-align:top;text-align:left}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:#eef0f3;color:#333;font-size:11px}
.notice{padding:10px 12px;border-radius:8px;margin-bottom:12px;font-size:13px}
.notice.success{background:#e7f6ed;color:#0f5c2f;border:1px solid #b7e3c5}
.notice.error{background:#fdecec;color:#7a1124;border:1px solid #f3c0c7}
.helper{font-size:12px;color:var(--muted)}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.inline-form{display:inline}
small{color:var(--muted)}
.code{font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;font-size:12px;background:#f0f0f0;padding:2px 6px;border-radius:6px}
@media (max-width: 900px){
  .grid.two,.grid.three{grid-template-columns:1fr}
  header{flex-direction:column;align-items:flex-start;gap:8px}
}