* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", sans-serif;
  background:
    radial-gradient(circle at top, #1e3a8a 0%, transparent 40%),
    linear-gradient(180deg, #0f172a 0%, #111827 100%);
  color: #e5eefc;
  min-height: 100vh;
}

.shell {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: 32px 16px;
}

.card {
  background: rgba(15, 23, 42, 0.86);
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 20px 80px rgba(15, 23, 42, 0.35);
}

.eyebrow {
  margin: 0 0 8px;
  color: #93c5fd;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 7vw, 42px);
}

.muted {
  margin: 0 0 24px;
  color: #cbd5e1;
  line-height: 1.6;
}

.primary,
.row button {
  appearance: none;
  border: none;
  border-radius: 14px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  background: #38bdf8;
  color: #082f49;
}

.primary:disabled {
  opacity: 0.7;
  cursor: wait;
}

.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #bfdbfe;
  font-size: 14px;
}

input,
.value,
.status {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(30, 41, 59, 0.8);
  color: #f8fafc;
  font-size: 15px;
}

.status.success {
  border-color: rgba(74, 222, 128, 0.45);
  color: #bbf7d0;
}

.status.error {
  border-color: rgba(248, 113, 113, 0.45);
  color: #fecaca;
}

.result.hidden,
.hidden {
  display: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.map-link {
  display: inline-block;
  margin-top: 20px;
  color: #7dd3fc;
  text-decoration: none;
  font-weight: 600;
}

@media (max-width: 640px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .row {
    grid-template-columns: 1fr;
  }
}