:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #059669;
  --danger: #dc2626;
  --warn: #d97706;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ----- Layout ----- */
.topbar {
  background: #111827;
  color: #fff;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar .brand { font-weight: 700; font-size: 16px; color: #fff; }
.topbar nav { display: flex; gap: 20px; flex: 1; }
.topbar nav a { color: #cbd5e1; font-size: 14px; }
.topbar nav a:hover, .topbar nav a.active { color: #fff; text-decoration: none; }
.topbar .right { display: flex; align-items: center; gap: 14px; font-size: 13px; color: #cbd5e1; }

.container { max-width: 1100px; margin: 28px auto; padding: 0 24px; }
.narrow { max-width: 560px; }

/* ----- Cards ----- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 20px;
}
.card h2, .card h3 { margin-top: 0; }

.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
.page-head h1 { margin: 0; font-size: 22px; }
.subtle { color: var(--muted); font-size: 13px; }

/* ----- Buttons ----- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary); color: #fff; border: none;
  padding: 9px 16px; border-radius: 8px; font-size: 14px; cursor: pointer;
  font-weight: 500;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn.secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn.secondary:hover { background: #f9fafb; }
.btn.danger { background: var(--danger); }
.btn.success { background: var(--success); }
.btn.small { padding: 5px 10px; font-size: 13px; }

/* ----- Forms ----- */
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 5px; color: #374151; }
input[type=text], input[type=email], input[type=password], input[type=date],
input[type=url], input[type=tel], select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 14px; font-family: inherit; background: #fff;
}
textarea { resize: vertical; min-height: 90px; }
input:focus, select:focus, textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--primary); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.form-actions { margin-top: 22px; display: flex; gap: 10px; }
@media (max-width: 640px){ .grid2 { grid-template-columns: 1fr; } }

/* ----- Tables ----- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); font-size: 14px; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
tr:hover td { background: #fafbfc; }

/* ----- Badges / stages ----- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; background: #eef2ff; color: #3730a3; }
.badge.green { background: #ecfdf5; color: #065f46; }
.badge.red { background: #fef2f2; color: #991b1b; }
.badge.amber { background: #fffbeb; color: #92400e; }
.badge.grey { background: #f3f4f6; color: #4b5563; }

.stat-row { display: flex; gap: 16px; flex-wrap: wrap; }
.stat { flex: 1; min-width: 150px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.stat .num { font-size: 28px; font-weight: 700; }
.stat .lbl { color: var(--muted); font-size: 13px; }

/* ----- Flash ----- */
.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.flash.success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.flash.error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* ----- Pipeline mini ----- */
.pipeline { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0; }
.pipeline .step { font-size: 12px; padding: 5px 10px; border-radius: 6px; background: #f3f4f6; color: #6b7280; }
.pipeline .step .n { font-weight: 700; }

/* ----- Code box ----- */
.codebox { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 22px; letter-spacing: 3px; font-weight: 700; background: #111827; color: #fff; padding: 10px 16px; border-radius: 8px; display: inline-block; }

/* ----- Exchanges ----- */
.exchange { border-left: 3px solid var(--primary); padding: 8px 14px; margin-bottom: 10px; background: #f9fafb; border-radius: 0 8px 8px 0; }
.exchange .meta { font-size: 12px; color: var(--muted); margin-bottom: 3px; }

/* ----- Portal ----- */
.portal-bg { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,#1e3a8a,#2563eb); padding: 24px; }
.portal-card { background: #fff; border-radius: 14px; padding: 40px; max-width: 440px; width: 100%; box-shadow: 0 20px 40px rgba(0,0,0,.25); }
.portal-card h1 { margin-top: 0; font-size: 22px; }
.code-input { text-transform: uppercase; letter-spacing: 6px; text-align: center; font-size: 24px; font-weight: 700; }
.dl-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 18px; }