/* Shared stylesheet for every page. Palette mirrors the app: slate ink on a
   near-white ground, with the four game colours (green, red, yellow, blue)
   carried through headings, cards and bullets as accents.

   Mobile first: the base rules target a phone, and the only media queries widen
   things for larger screens or adapt to a dark colour scheme. */

:root {
  --ink: #0f172a;
  --ink-soft: #475569;
  --ink-faint: #6b7280;
  --ground: #f8fafc;
  --card: #ffffff;
  --line: #e2e8f0;

  --green: #16a34a;
  --red: #dc2626;
  --yellow: #ca8a04;
  --blue: #2563eb;

  /* Same four hues at low alpha, for card and badge fills. */
  --green-tint: #16a34a1a;
  --red-tint: #dc26261a;
  --yellow-tint: #ca8a041a;
  --blue-tint: #2563eb1a;

  --shadow: 0 6px 24px rgb(15 23 42 / 0.10);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1f5f9;
    --ink-soft: #cbd5e1;
    --ink-faint: #94a3b8;
    --ground: #0b1220;
    --card: #172033;
    --line: #334155;

    --green: #4ade80;
    --red: #f87171;
    --yellow: #fde047;
    --blue: #60a5fa;

    --green-tint: #4ade8024;
    --red-tint: #f8717124;
    --yellow-tint: #fde04724;
    --blue-tint: #60a5fa24;

    --shadow: 0 6px 24px rgb(0 0 0 / 0.35);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 18px 64px;
  background: var(--ground);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
  overflow-wrap: break-word;
}

img { max-width: 100%; }

.wrap { max-width: 680px; margin: 0 auto; }

/* Header — a tinted band carrying all four game colours */

header {
  position: relative;
  margin: 18px 0 8px;
  padding: 40px 20px 32px;
  text-align: center;
  border-radius: 24px;
  background:
    radial-gradient(60% 80% at 15% 0%, var(--green-tint), transparent 70%),
    radial-gradient(60% 80% at 85% 0%, var(--blue-tint), transparent 70%),
    radial-gradient(70% 90% at 50% 110%, var(--yellow-tint), transparent 70%);
}

header img {
  width: 84px;
  height: 84px;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

h1 {
  margin: 18px 0 6px;
  font-size: clamp(28px, 8vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  background: linear-gradient(100deg, var(--blue), var(--green) 55%, var(--yellow));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(16px, 4.4vw, 19px);
}

/* Section headings — a coloured bar that cycles through the four hues */

h2 {
  position: relative;
  margin: 40px 0 12px;
  padding-left: 14px;
  font-size: clamp(20px, 5.4vw, 23px);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.16em;
  bottom: 0.16em;
  width: 5px;
  border-radius: 3px;
  background: var(--blue);
}

h2:nth-of-type(4n + 2)::before { background: var(--green); }
h2:nth-of-type(4n + 3)::before { background: var(--yellow); }
h2:nth-of-type(4n + 4)::before { background: var(--red); }

h3 {
  margin: 26px 0 4px;
  font-size: 17px;
  color: var(--blue);
}

p { margin: 12px 0; }

a { color: var(--blue); }

hr {
  margin: 44px 0 0;
  border: 0;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--green), var(--yellow), var(--red), var(--blue));
  opacity: 0.75;
}

/* Stage list on the landing page — numbered badge in each game's own colour */

.games {
  list-style: none;
  margin: 18px 0;
  padding: 0;
  counter-reset: stage;
}

.games li {
  position: relative;
  counter-increment: stage;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 5px solid var(--blue);
  border-radius: 14px;
  padding: 14px 16px 14px 56px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
}

.games li::before {
  content: counter(stage);
  position: absolute;
  left: 14px;
  top: 15px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
  background: var(--blue-tint);
}

.games b { display: block; font-size: 17px; }

.games span { color: var(--ink-soft); font-size: 15px; }

.games li:nth-child(1) { border-left-color: var(--green); }
.games li:nth-child(1) b { color: var(--green); }
.games li:nth-child(1)::before { color: var(--green); background: var(--green-tint); }

.games li:nth-child(2) { border-left-color: var(--red); }
.games li:nth-child(2) b { color: var(--red); }
.games li:nth-child(2)::before { color: var(--red); background: var(--red-tint); }

.games li:nth-child(3) { border-left-color: var(--blue); }
.games li:nth-child(3) b { color: var(--blue); }

.games li:nth-child(4) { border-left-color: var(--yellow); }
.games li:nth-child(4) b { color: var(--yellow); }
.games li:nth-child(4)::before { color: var(--yellow); background: var(--yellow-tint); }

.games li:nth-child(5) { border-left-color: var(--green); }
.games li:nth-child(5) b { color: var(--green); }
.games li:nth-child(5)::before { color: var(--green); background: var(--green-tint); }

.games li:nth-child(6) { border-left-color: var(--blue); }
.games li:nth-child(6) b { color: var(--blue); }

/* Plain bullet lists — coloured markers, cycling */

ul.plain { padding-left: 22px; }

ul.plain li { margin: 7px 0; }

ul.plain li::marker { color: var(--blue); font-size: 1.1em; }
ul.plain li:nth-child(4n + 1)::marker { color: var(--green); }
ul.plain li:nth-child(4n + 2)::marker { color: var(--yellow); }
ul.plain li:nth-child(4n + 3)::marker { color: var(--red); }

/* Contact box */

.contact {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 4px solid var(--green);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 20px 0;
  box-shadow: var(--shadow);
}

.contact p:first-child { margin-top: 0; }
.contact p:last-child { margin-bottom: 0; }
.contact a { font-weight: 600; }

/* Effective-date line under a policy heading */

.meta {
  display: inline-block;
  margin: 6px 0 0;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--blue-tint);
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.5;
}

/* Footer */

footer {
  margin-top: 22px;
  padding-top: 18px;
  color: var(--ink-faint);
  font-size: 15px;
  line-height: 2.2;
  text-align: center;
}

footer a {
  margin: 0 4px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--blue-tint);
  color: var(--blue);
  text-decoration: none;
  white-space: nowrap;
}

footer a:hover { text-decoration: underline; }

footer .copyright { margin-top: 16px; line-height: 1.6; }

/* Wider screens */

@media (min-width: 560px) {
  body { padding: 0 24px 72px; }
  header { padding: 52px 24px 40px; }
  header img { width: 96px; height: 96px; }
  .games li { padding-right: 20px; }
}