:root {
  --navy: #10192b;
  --navy-2: #17223a;
  --accent: #c8a24a;
  --text: #1c2333;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #f6f7f9;
  --good: #1b8a5a;
  --bad: #c0392b;
  --radius: 10px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--bad); min-height: 1.2em; font-size: 0.9em; }

/* Login */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--navy), var(--navy-2));
}
.login-card {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius);
  width: 320px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}
.login-card h1 { margin: 0 0 4px; letter-spacing: 0.04em; }
.login-card input {
  width: 100%; padding: 10px 12px; margin: 16px 0 8px;
  border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
}
.login-card button {
  width: 100%; padding: 10px; background: var(--navy); color: #fff;
  border: none; border-radius: 8px; cursor: pointer; font-size: 14px;
}
.login-card button:hover { background: var(--navy-2); }

/* App shell */
.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 28px; background: var(--navy); color: #fff;
}
.brand { font-weight: 700; letter-spacing: 0.05em; }
.tabs { display: flex; gap: 6px; flex: 1; }
.tab {
  background: transparent; border: none; color: #cbd3e1; padding: 8px 14px;
  border-radius: 6px; cursor: pointer; font-size: 14px;
}
.tab:hover { background: rgba(255,255,255,0.08); color: #fff; }
.tab.active { background: var(--accent); color: #23200e; font-weight: 600; }
.ghost {
  background: transparent; border: 1px solid rgba(255,255,255,0.3); color: #fff;
  padding: 6px 14px; border-radius: 6px; cursor: pointer;
}
.ghost:hover { background: rgba(255,255,255,0.1); }

.view-root { padding: 24px 28px 60px; max-width: 1200px; margin: 0 auto; }

/* Cards / grids */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 22px; }
.kpi-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px;
}
.kpi-card .label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.kpi-card .value { font-size: 26px; font-weight: 700; margin-top: 6px; }
.kpi-card .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }

.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; margin-bottom: 20px;
}
.card h2 { margin: 0 0 14px; font-size: 16px; }
.card h3 { margin: 0 0 10px; font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
tr:last-child td { border-bottom: none; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge.active { background: #e5f6ee; color: var(--good); }
.badge.prospective { background: #fdf3dd; color: #a6740b; }
.badge.paused { background: #eef0f3; color: var(--muted); }
.badge.completed { background: #e8eef8; color: #2b5aad; }
.badge.churned { background: #fbeaea; color: var(--bad); }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.actions button { margin-right: 6px; }

button.primary {
  background: var(--navy); color: #fff; border: none; padding: 8px 16px;
  border-radius: 6px; cursor: pointer; font-size: 14px;
}
button.primary:hover { background: var(--navy-2); }
button.link {
  background: none; border: none; color: var(--navy); cursor: pointer; padding: 4px 6px; font-size: 13px;
  text-decoration: underline;
}
button.link.danger { color: var(--bad); }

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 12px; }
.form-grid label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); gap: 4px; }
.form-grid input, .form-grid select, .form-grid textarea {
  padding: 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; font-family: inherit;
}
.chart-wrap { position: relative; height: 320px; }

@media (max-width: 700px) {
  .topbar { flex-wrap: wrap; gap: 10px; }
  .tabs { order: 3; width: 100%; overflow-x: auto; }
}