:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --panel: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #5865f2;
  --accent-2: #3fb950;
  --danger: #f85149;
  --warn: #d29922;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Layout ---------- */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 230px;
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  flex-shrink: 0;
}
.sidebar .brand {
  font-weight: 700;
  font-size: 18px;
  padding: 0 22px 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 22px;
  color: var(--muted);
  border-left: 3px solid transparent;
}
.sidebar nav a:hover { background: var(--panel); color: var(--text); text-decoration: none; }
.sidebar nav a.active {
  color: var(--text);
  border-left-color: var(--accent);
  background: var(--panel);
}
.sidebar .foot {
  position: absolute; bottom: 16px; left: 22px; right: 22px;
  font-size: 12px; color: var(--muted);
}

.main { flex: 1; padding: 28px 34px; max-width: 1200px; }
.main h1 { margin: 0 0 4px; font-size: 22px; }
.subtitle { color: var(--muted); margin: 0 0 24px; }

/* ---------- Cards / stats ---------- */
.grid { display: grid; gap: 16px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 28px; font-weight: 700; margin-top: 4px; }

.card h2 { font-size: 15px; margin: 0 0 14px; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
tbody tr:hover { background: var(--bg-alt); }
.table-wrap { overflow-x: auto; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block; padding: 2px 9px; border-radius: 20px;
  font-size: 12px; font-weight: 600; background: var(--bg-alt); border: 1px solid var(--border);
}
.badge.active { color: var(--accent-2); border-color: var(--accent-2); }
.badge.vip { color: var(--warn); border-color: var(--warn); }
.badge.lead { color: var(--accent); border-color: var(--accent); }
.badge.banned, .badge.churned { color: var(--danger); border-color: var(--danger); }
.badge.inactive { color: var(--muted); }
.tag { display:inline-block; background: var(--bg-alt); border:1px solid var(--border);
  border-radius: 6px; padding: 1px 7px; font-size: 12px; margin: 0 3px 3px 0; }

/* ---------- Forms ---------- */
input, select, textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); padding: 9px 11px; border-radius: 8px; font-size: 14px;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
label { display: block; font-size: 12px; color: var(--muted); margin: 12px 0 5px; }
.btn {
  background: var(--accent); color: #fff; border: none; padding: 9px 16px;
  border-radius: 8px; cursor: pointer; font-weight: 600; font-size: 14px;
}
.btn:hover { filter: brightness(1.1); }
.btn.secondary { background: var(--bg-alt); border: 1px solid var(--border); color: var(--text); }
.btn.danger { background: var(--danger); }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1; }

/* ---------- Chart ---------- */
.chart { display: flex; align-items: flex-end; gap: 6px; height: 140px; padding-top: 10px; }
.chart .bar-wrap { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.chart .bar { width: 100%; background: linear-gradient(180deg, var(--accent), #3a41b5); border-radius: 4px 4px 0 0; min-height: 3px; }
.chart .bar-label { font-size: 10px; color: var(--muted); }

/* ---------- Login ---------- */
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box { width: 340px; }
.login-box .brand { text-align: center; font-size: 22px; font-weight: 700; margin-bottom: 20px; }

/* ---------- Flash ---------- */
.flash { padding: 11px 15px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.flash.success { background: rgba(63,185,80,.15); border: 1px solid var(--accent-2); }
.flash.error { background: rgba(248,81,73,.15); border: 1px solid var(--danger); }

.muted { color: var(--muted); }
.mono { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; }
.avatar { width: 28px; height: 28px; border-radius: 50%; vertical-align: middle; margin-right: 8px; }
.pill-ok { color: var(--accent-2); }
.pill-bad { color: var(--danger); }

@media (max-width: 800px) {
  .sidebar { width: 60px; }
  .sidebar .brand span, .sidebar nav a span, .sidebar .foot { display: none; }
  .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
}