:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --ok: #22c55e;
  --err: #ef4444;
  --border: #2d3a4f;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 12px;
}
.brand { font-weight: 700; font-size: 1.1rem; }
.topbar nav { display: flex; gap: 16px; flex-wrap: wrap; }
.topbar a { color: var(--muted); text-decoration: none; }
.topbar a:hover { color: var(--text); }
.topbar a.logout { color: #f87171; }

.container { max-width: 1100px; margin: 0 auto; padding: 32px 20px 64px; }
h1 { margin: 0 0 8px; font-size: 1.75rem; }
.muted { color: var(--muted); }
code { background: #0d1117; padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-top: 20px;
}
.grid { display: grid; gap: 20px; }
.grid.stats { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grid.two-col { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid.providers { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.stat .label { color: var(--muted); font-size: 0.85rem; }
.stat .value { font-size: 2rem; font-weight: 700; margin-top: 4px; }

label { display: block; margin: 12px 0 4px; font-size: 0.9rem; color: var(--muted); }
input, select, button {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d1117;
  color: var(--text);
  font-size: 1rem;
}
button, .btn {
  display: inline-block;
  margin-top: 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  padding: 10px 16px;
  width: auto;
  border-radius: 8px;
}
button:hover, .btn:hover { background: var(--accent-hover); }
.btn.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }

.auth-card { max-width: 420px; margin: 40px auto; }
.auth-card form { margin-top: 20px; }

.alert { padding: 12px 16px; border-radius: 8px; margin: 16px 0; }
.alert.error { background: rgba(239, 68, 68, 0.15); border: 1px solid var(--err); }
.alert.ok { background: rgba(34, 197, 94, 0.15); border: 1px solid var(--ok); }

table { width: 100%; border-collapse: collapse; margin-top: 12px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 0.85rem; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: #334155;
}
.badge.paid, .badge.success { background: rgba(34, 197, 94, 0.25); color: #86efac; }
.badge.failed, .badge.error { background: rgba(239, 68, 68, 0.25); color: #fca5a5; }
.badge.created, .badge.processing { background: rgba(59, 130, 246, 0.25); color: #93c5fd; }

.qr { max-width: 280px; width: 100%; border-radius: 8px; background: #fff; padding: 8px; }
.center { text-align: center; }
.url { word-break: break-all; font-size: 0.9rem; }
.provider-form { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 16px; }
.result p { font-size: 1.1rem; }