:root {
  --bg: #0f172a;
  --panel: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --brand: #0f62fe;       /* IBM blue */
  --brand-dark: #0043ce;
  --ok-bg: #def7ec; --ok-ink: #03543f;
  --err-bg: #fde8e8; --err-ink: #9b1c1c;
  --sel: #0f62fe;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 220px, #f1f5f9 220px, #f1f5f9 100%);
  min-height: 100vh;
}

header {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  color: #fff;
}
.brand { font-size: 20px; font-weight: 700; color: #fff; text-decoration: none; }
nav { display: flex; align-items: center; gap: 18px; }
nav a { color: #cbd5e1; text-decoration: none; font-weight: 500; }
nav a:hover { color: #fff; }
nav .who { color: #fff; font-weight: 600; }

main { max-width: 760px; margin: 0 auto; padding: 8px 16px 48px; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  margin: 18px 0;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
}
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
h1 { margin: 0 0 12px; font-size: 26px; }
h2 { margin: 0 0 14px; font-size: 19px; }
.lead { font-size: 16px; line-height: 1.5; }
.muted { color: var(--muted); font-size: 14px; }
.pts { background: #eff6ff; color: var(--brand-dark); font-weight: 700; padding: 4px 10px; border-radius: 999px; font-size: 13px; }

label { display: block; margin: 12px 0; font-weight: 600; font-size: 14px; }
input, select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  font-size: 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-weight: 400;
}
.inline { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.inline label, .inline input, .inline select { display: inline-block; width: auto; margin: 0; }
.inline.tiny input[type=number] { width: 64px; }

button {
  cursor: pointer;
  border: none;
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 10px 16px;
  border-radius: 8px;
}
button:hover { background: var(--brand-dark); }
button:disabled { background: #94a3b8; cursor: not-allowed; }
button.ghost { background: #fff; color: var(--brand); border: 1px solid var(--brand); }
button.danger { background: #fff; color: #b91c1c; border: 1px solid #fca5a5; }

/* link-styled call-to-action buttons (used on the home page) */
a.btn {
  display: inline-block;
  text-decoration: none;
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 10px 16px;
  border-radius: 8px;
}
a.btn:hover { background: var(--brand-dark); }
a.btn.ghost { background: #fff; color: var(--brand); border: 1px solid var(--brand); }
.cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

ol.steps { margin: 4px 0 0; padding-left: 1.15rem; }
ol.steps li { margin: 10px 0; line-height: 1.55; }

.flash { padding: 12px 16px; border-radius: 10px; margin: 14px 0; font-weight: 500; }
.flash.ok { background: var(--ok-bg); color: var(--ok-ink); }
.flash.error { background: var(--err-bg); color: var(--err-ink); }

/* match pick rows */
.match { padding: 14px 0; border-top: 1px solid var(--line); }
.match:first-of-type { border-top: none; }
.meta { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.picks { display: flex; gap: 8px; flex-wrap: wrap; }
.pick {
  flex: 1 1 0;
  min-width: 110px;
  background: #f8fafc;
  color: var(--ink);
  border: 2px solid var(--line);
  font-weight: 600;
}
.pick:hover { border-color: var(--brand); background: #fff; }
.pick.draw { flex: 0 0 auto; min-width: 72px; color: var(--muted); }
.pick.sel { border-color: var(--sel); background: #eff6ff; color: var(--brand-dark); }

/* tables */
.results { width: 100%; border-collapse: collapse; font-size: 15px; }
.results th, .results td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
.results th { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .03em; }
.results .num { text-align: right; width: 1%; white-space: nowrap; }
.results tr.me { background: #eff6ff; }
.status { font-size: 12px; color: var(--muted); }

.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 8px; }
.row form { margin: 0; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid button { grid-column: 1 / -1; }
code { background: #f1f5f9; padding: 1px 5px; border-radius: 4px; font-size: 13px; }

footer { text-align: center; color: #94a3b8; font-size: 13px; padding: 24px 16px 40px; line-height: 1.7; }
footer a { color: inherit; text-decoration: underline; }
footer a:hover { color: #e2e8f0; }

@media (max-width: 520px) {
  .grid { grid-template-columns: 1fr; }
  nav { gap: 12px; }
}