:root {
  --bg: #0d0d0f;
  --panel: #17171b;
  --panel-2: #202028;
  --text: #f5f5f7;
  --muted: #a4a4ad;
  --accent: #ff9f1c;
  --accent-2: #ffbf69;
  --line: #2c2c34;
  --danger: #ff5a5f;
  --success: #22c55e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #0b0b0d 0%, #121218 100%);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
.layout { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }
.sidebar { background: #101014; border-right: 1px solid var(--line); padding: 24px 16px; }
.brand { font-size: 24px; font-weight: 700; color: var(--accent-2); margin-bottom: 24px; display:flex; gap:10px; align-items:center; }
.userbox { background: var(--panel); border: 1px solid var(--line); padding: 14px; border-radius: 14px; margin-bottom: 20px; display:grid; gap:5px; }
nav { display: grid; gap: 8px; }
nav a { padding: 12px 14px; border-radius: 12px; background: transparent; border: 1px solid transparent; color: var(--muted); }
nav a:hover { background: var(--panel); border-color: var(--line); color: var(--text); }
.content { padding: 22px; }
.topbar { margin-bottom: 18px; }
.topbar h1 { margin: 0; font-size: 28px; }
.cards { display:grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-bottom: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 18px; }
.card h3 { margin: 0 0 8px 0; color: var(--muted); font-size: 14px; font-weight: 600; }
.card .value { font-size: 28px; font-weight: 700; }
.grid-2 { display:grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 18px; margin-bottom:18px; }
.panel h2 { margin-top: 0; font-size: 20px; }
label { display:block; margin: 12px 0 6px; color: var(--muted); font-size: 14px; }
input, select {
  width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--panel-2); color: var(--text); outline: none;
}
button, .btn {
  margin-top: 14px; display:inline-block; background: var(--accent); color: #161616; border: none;
  padding: 12px 16px; border-radius: 12px; font-weight: 700; cursor: pointer;
}
.btn.secondary { background: #2c2c34; color: var(--text); }
.btn.danger { background: var(--danger); color:#fff; }
table { width:100%; border-collapse: collapse; }
th, td { text-align:left; padding: 12px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }
.badge { padding: 6px 10px; border-radius: 999px; background: rgba(34,197,94,.15); color: #86efac; font-size: 12px; }
.alert { padding: 12px 14px; border-radius: 12px; margin-bottom: 16px; }
.alert.success { background: rgba(34,197,94,.12); border: 1px solid rgba(34,197,94,.4); }
.alert.error { background: rgba(255,90,95,.12); border: 1px solid rgba(255,90,95,.4); }
.login-wrap { max-width: 460px; margin: 80px auto; }
.muted { color: var(--muted); }
.actions { display:flex; gap:8px; flex-wrap:wrap; }
.inline { display:grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--line); }
  .grid-2 { grid-template-columns: 1fr; }
}

.grid-3 { display:grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.hero-panel { display:flex; justify-content:space-between; align-items:center; gap:16px; }
.danger-badge { background: rgba(255,90,95,.15); color: #ffb4b7; }