:root {
  --ink: #1b2a4a;
  --paper: #f7f5f2;
  --accent: #c8532b;
  --ok-bg: #e4f3e6;
  --ok-ink: #1d5c2a;
  --no-bg: #fbe9e4;
  --no-ink: #8a2f16;
  --warn-bg: #fdf3d7;
  --warn-ink: #6b4e0a;
  --info-bg: #e7eef8;
  --info-ink: #274a80;
  --border: #d8d2c8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.5;
}
.card {
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}
h1 { font-size: 1.75rem; margin: 0 0 .5rem; }
h2 { font-size: 1.1rem; margin: 0 0 .5rem; }
.intro { margin: 0 0 1.5rem; }
label { display: block; font-weight: 600; margin-bottom: .4rem; }
.row { display: flex; gap: .5rem; flex-wrap: wrap; }
input[type="text"] {
  flex: 1 1 220px;
  min-width: 0;
  padding: .7rem .8rem;
  font-size: 1.05rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
button {
  padding: .7rem 1.4rem;
  font-size: 1.05rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button:hover { filter: brightness(1.08); }
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}
button[disabled] { opacity: .6; cursor: wait; }
.error { color: #8a1f10; background: var(--no-bg); padding: .5rem .75rem; border-radius: 8px; margin: .6rem 0 0; }
.status { display: flex; align-items: center; gap: .6rem; margin-top: 1.25rem; font-weight: 600; }
.spinner {
  width: 1.1rem; height: 1.1rem; flex: 0 0 auto;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.result { margin-top: 1.25rem; padding: 1rem 1.1rem; border-radius: 10px; }
.result-title { font-size: 1.2rem; font-weight: 700; margin: 0 0 .25rem; }
.result-body { margin: 0; }
.result.delivered   { background: var(--ok-bg);   color: var(--ok-ink); }
.result.not-covered { background: var(--no-bg);   color: var(--no-ink); }
.result.invalid     { background: var(--warn-bg); color: var(--warn-ink); }
.result.unavailable { background: var(--info-bg); color: var(--info-ink); }
.notes { margin-top: 2.5rem; border-top: 1px solid var(--border); padding-top: 1.25rem; font-size: .95rem; }
.notes ul { margin: 0; padding-left: 1.1rem; }
.notes li { margin-bottom: .4rem; }