:root {
  --ink: #0f172a;
  --muted: #64748b;
  --faint: #94a3b8;
  --line: #e2e8f0;
  --line2: #eef2f7;
  --bg: #f1f5f9;
  --card: #ffffff;
  --brand: #0d6efd;
  --brand-d: #0b5ed7;
  --teal: #0f766e;
  --ok: #16a34a;
  --ok-bg: #f0fdf4;
  --ok-line: #bbf7d0;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --warn-line: #fde68a;
  --err: #dc2626;
  --err-bg: #fef2f2;
  --err-line: #fecaca;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  padding: 28px 16px 56px;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 820px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  overflow: hidden;
}

/* ---------- header ---------- */
.hd {
  padding: 22px 28px;
  background: linear-gradient(120deg, #0f766e, #0d6efd);
  color: #fff;
}
.hd-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.hd h1 { margin: 0; font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }
.hd .sub { margin: 4px 0 0; font-size: 13px; opacity: 0.9; }

.pill { padding: 7px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; white-space: nowrap; }
.pill-mut { background: rgba(255, 255, 255, 0.18); color: #fff; }
.pill-ok { background: #dcfce7; color: #166534; }
.pill-warn { background: #fef3c7; color: #92400e; }

/* ---------- form / cards ---------- */
form { padding: 22px 28px 26px; }

.card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 18px 20px;
  margin-bottom: 18px;
  background: #fff;
}
.card-mut { background: #f8fafc; }
.card-title {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--teal);
}
.card-title .note { color: var(--faint); font-weight: 500; text-transform: none; letter-spacing: 0; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } }

/* ---------- fields ---------- */
.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.field .lbl { font-size: 13px; font-weight: 600; color: #1e293b; }
.field .req { color: var(--err); font-style: normal; }
.field .attr {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  color: var(--faint);
}

.field input,
.field select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field input::placeholder { color: #b8c2cf; }
.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}
.field input[readonly] { background: #eef2f7; color: var(--muted); cursor: not-allowed; }
.field.invalid input,
.field.invalid select,
.field.invalid .phone-group { border-color: var(--err); box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12); }

/* phone +1 group */
.phone-group { display: flex; align-items: stretch; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; transition: border-color 0.15s, box-shadow 0.15s; }
.phone-group:focus-within { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15); }
.phone-group .cc { display: flex; align-items: center; padding: 0 13px; background: #f1f5f9; color: #334155; font-weight: 700; font-size: 14px; border-right: 1px solid var(--line); }
.phone-group input { border: none; border-radius: 0; box-shadow: none !important; }

/* ---------- errors ---------- */
.errors {
  background: var(--err-bg);
  color: #991b1b;
  border: 1px solid var(--err-line);
  border-radius: 10px;
  padding: 13px 15px;
  font-size: 13.5px;
  margin-bottom: 16px;
}
.errors ul { margin: 6px 0 0; padding-left: 18px; }
.errors li { margin: 2px 0; }

/* ---------- actions ---------- */
.actions { display: flex; gap: 12px; }
@media (max-width: 600px) { .actions { flex-direction: column; } }
.btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 20px;
  border-radius: 11px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s, transform 0.05s, box-shadow 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn .step { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 999px; background: rgba(255, 255, 255, 0.25); font-size: 13px; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 2px 8px rgba(13, 110, 253, 0.25); }
.btn-primary:hover { background: var(--brand-d); }
.btn-ok { background: var(--ok); color: #fff; box-shadow: 0 2px 8px rgba(22, 163, 74, 0.25); }
.btn-ok:hover { background: #15803d; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }

.hint { font-size: 13px; color: var(--muted); margin: 14px 0 0; }
.hint code { background: #eef2f7; padding: 1px 6px; border-radius: 5px; font-size: 12px; }

/* ---------- result panels ---------- */
.result { margin: 0 28px 28px; padding: 18px 20px; border-radius: 12px; font-size: 14px; }
.result.ok { background: var(--ok-bg); border: 1px solid var(--ok-line); }
.result.no { background: var(--warn-bg); border: 1px solid var(--warn-line); }
.result.err { background: var(--err-bg); border: 1px solid var(--err-line); }
.result h2 { margin: 0 0 12px; font-size: 17px; }
.result .fwd { font-size: 26px; font-weight: 800; letter-spacing: 0.01em; margin: 4px 0 6px; }
.result .fwd a { color: var(--ok); text-decoration: none; }
.result dl { display: grid; grid-template-columns: auto 1fr; gap: 5px 14px; margin: 12px 0 0; font-size: 13.5px; }
.result dt { color: var(--muted); font-weight: 600; }
.result code { background: rgba(15, 23, 42, 0.06); padding: 1px 6px; border-radius: 5px; word-break: break-all; }
.result .raw { margin-top: 14px; }
.result .raw summary { cursor: pointer; color: var(--muted); font-weight: 600; }
.result pre { background: rgba(15, 23, 42, 0.05); padding: 12px; border-radius: 9px; overflow: auto; font-size: 12px; margin-top: 8px; }