:root {
  --bg: #f4efe6;
  --ink: #1d2733;
  --muted: #5d6874;
  --accent: #c8402a;
  --accent-2: #1f4e6b;
  --card: #fffdf8;
  --line: #ddd3c2;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 Georgia, "Times New Roman", serif;
}
a { color: var(--accent-2); }
a:hover { color: var(--accent); }

header.site {
  background: var(--ink);
  color: #f4efe6;
  border-bottom: 4px solid var(--accent);
}
header.site .wrap {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 12px 24px;
  padding: 14px 20px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: #f4efe6; text-decoration: none;
  font: 700 22px/1 "Trebuchet MS", Verdana, sans-serif;
  letter-spacing: .04em;
}
.brand svg { width: 34px; height: 34px; }
nav a {
  color: #d9d2c3; text-decoration: none; margin-left: 20px;
  font: 600 15px/1 "Trebuchet MS", Verdana, sans-serif;
  text-transform: uppercase; letter-spacing: .08em;
  padding-bottom: 4px; border-bottom: 2px solid transparent;
}
nav a:hover, nav a[aria-current="page"] { color: #fff; border-color: var(--accent); }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
main.wrap { padding-top: 36px; padding-bottom: 60px; }

.hero { display: grid; gap: 28px; grid-template-columns: 1.1fr .9fr; align-items: center; margin-bottom: 40px; }
.hero h1 { font: 700 42px/1.1 "Trebuchet MS", Verdana, sans-serif; margin: 0 0 14px; }
.hero p.lead { font-size: 19px; color: var(--muted); margin: 0 0 20px; }
.hero svg { width: 100%; height: auto; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  padding: 11px 22px; border-radius: 4px; border: 0; cursor: pointer;
  font: 700 15px/1 "Trebuchet MS", Verdana, sans-serif; letter-spacing: .05em; text-transform: uppercase;
}
.btn:hover { background: #a83320; color: #fff; }
.btn.alt { background: var(--accent-2); }
.btn.alt:hover { background: #163a50; }

h2 { font: 700 28px/1.2 "Trebuchet MS", Verdana, sans-serif; margin: 40px 0 14px; }
h3 { font: 700 20px/1.3 "Trebuchet MS", Verdana, sans-serif; margin: 0 0 8px; }

.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 20px;
}
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.card .tag {
  display: inline-block; font: 700 12px/1 "Trebuchet MS", Verdana, sans-serif;
  letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px;
}

table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); font-size: 16px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); }
th { background: #ece4d3; font: 700 14px/1.2 "Trebuchet MS", Verdana, sans-serif; text-transform: uppercase; letter-spacing: .06em; }
.table-scroll { overflow-x: auto; }

.timeline { list-style: none; padding: 0; margin: 0; border-left: 3px solid var(--accent); }
.timeline li { padding: 0 0 18px 20px; position: relative; }
.timeline li::before {
  content: ""; position: absolute; left: -9px; top: 8px; width: 15px; height: 15px;
  background: var(--bg); border: 3px solid var(--accent); border-radius: 50%;
}
.timeline b { font-family: "Trebuchet MS", Verdana, sans-serif; }

/* games */
.game {
  background: var(--card); border: 1px solid var(--line); border-radius: 6px;
  padding: 22px; margin-bottom: 28px;
}
.game .bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; }
.game .score { font: 600 15px/1 "Trebuchet MS", Verdana, sans-serif; color: var(--muted); }
.hint { color: var(--muted); font-size: 15px; margin: 10px 0 0; }

#memory-board { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; max-width: 420px; }
.mcard {
  aspect-ratio: 1; border: 0; border-radius: 6px; cursor: pointer;
  background: var(--accent-2); color: #fff; font-size: 34px;
  display: flex; align-items: center; justify-content: center;
  transition: transform .2s, background .2s;
}
.mcard:hover { transform: translateY(-2px); }
.mcard.open, .mcard.done { background: #fff; border: 2px solid var(--line); }
.mcard.done { opacity: .55; cursor: default; }
.mcard span { visibility: hidden; }
.mcard.open span, .mcard.done span { visibility: visible; }

canvas#snake { background: #1d2733; border-radius: 6px; max-width: 100%; touch-action: none; display: block; }
.pad { display: grid; grid-template-columns: repeat(3, 56px); gap: 6px; margin-top: 12px; justify-content: start; }
.pad button { height: 48px; border: 1px solid var(--line); background: #fff; border-radius: 6px; font-size: 20px; cursor: pointer; }
.pad button:active { background: #ece4d3; }

#ttt-board { display: grid; grid-template-columns: repeat(3, 92px); gap: 8px; }
.cell {
  width: 92px; height: 92px; border: 2px solid var(--line); background: #fff; border-radius: 6px;
  font: 700 44px/1 "Trebuchet MS", Verdana, sans-serif; cursor: pointer; color: var(--accent-2);
}
.cell.o { color: var(--accent); }
.cell:disabled { cursor: default; }

footer.site { border-top: 1px solid var(--line); padding: 22px 0 36px; color: var(--muted); font-size: 14px; }

@media (max-width: 720px) {
  .hero { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  nav a { margin-left: 0; margin-right: 16px; }
}