:root {
  --bg: #0f1115; --card: #1a1d24; --text: #e6e8ec; --muted: #9aa0aa;
  --green: #2ecc71; --amber: #f1c40f; --red: #e74c3c; --border: #2a2e37;
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 2rem 1rem; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
h1 { text-align: center; font-weight: 600; }
#cards {
  display: grid; gap: 1.25rem; max-width: 760px; margin: 1.5rem auto 0;
  grid-template-columns: 1fr;
}
@media (min-width: 680px) { #cards { grid-template-columns: 1fr 1fr; } }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 1.25rem; box-shadow: 0 1px 3px rgba(0,0,0,.3);
}
.card-head { display: flex; justify-content: space-between; align-items: baseline; gap: .5rem; }
.card-head h2 { margin: 0; font-size: 1.25rem; }
.plan { color: var(--muted); font-size: .85rem; text-align: right; }
.bar {
  height: 12px; background: #11141a; border-radius: 999px; overflow: hidden;
  margin: 1rem 0 .5rem;
}
.bar-fill { height: 100%; transition: width .4s ease; }
.bar-fill.green { background: var(--green); }
.bar-fill.amber { background: var(--amber); }
.bar-fill.red { background: var(--red); }
.usage { display: flex; justify-content: space-between; gap: .5rem; flex-wrap: wrap; }
.usage strong { color: var(--text); }
.meta { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; margin: 1rem 0 0; }
.meta dt { color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; }
.meta dd { margin: 0; font-size: .9rem; }
.daily { margin: 1rem 0 0; border-top: 1px solid var(--border); padding-top: .75rem; }
.daily h3 { margin: 0 0 .4rem; font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
ul.daily-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .3rem; font-size: .8rem; }
ul.daily-list li { display: grid; grid-template-columns: 5.5rem 1fr 5rem; align-items: center; gap: .5rem; }
.day-date { color: var(--muted); }
.day-bar { height: 8px; background: #11141a; border-radius: 999px; overflow: hidden; }
.day-bar-fill { display: block; height: 100%; background: var(--green); }
.day-amt { text-align: right; }
.card-error { border-color: var(--red); }
.error { color: var(--red); font-weight: 600; margin: .5rem 0 .25rem; }
.error-detail { color: var(--muted); font-size: .85rem; margin: 0; }
.card-loading p { color: var(--muted); }