/* Home page: library shelf. Header with logo and look controls, short intro, grade filter, then one row of game tiles per grade. */
body { font-size: 16px; line-height: 1.5; }
.wrap { max-width: 1080px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); padding-block: 20px 56px; display: flex; flex-direction: column; gap: 28px; }

.top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 20px; }
.logo { display: flex; align-items: center; gap: 14px; text-decoration: none; color: inherit; font-size: 26px; }
.look { display: flex; align-items: center; gap: 10px; }
.dots { display: flex; gap: 6px; }
.dot { width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--surface); box-shadow: 0 0 0 1px var(--line); cursor: pointer; padding: 0; }
.dot[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--accent); }
.icon-btn { width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--fg); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.icon-btn svg { width: 18px; height: 18px; }

.intro { display: flex; flex-direction: column; gap: 10px; max-width: 62ch; }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--accent); }
h1 { margin: 0; font-family: var(--font-display); font-weight: 800; font-size: clamp(30px, 5vw, 46px); line-height: 1.02; letter-spacing: -.02em; text-wrap: balance; }
.lede { margin: 0; color: var(--muted); font-size: 17px; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chip { border: 1px solid var(--line); background: var(--surface); color: var(--fg); border-radius: 99px; padding: 7px 16px; font: 700 14px var(--font-body); cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.search { margin-left: auto; flex: 1 1 200px; max-width: 280px; height: 38px; border-radius: 99px; border: 1px solid var(--line); background: var(--surface); color: var(--fg); padding: 0 16px; font: 15px var(--font-body); }
.chip:focus-visible, .search:focus-visible, .tile:focus-visible, .dot:focus-visible, .icon-btn:focus-visible, .logo:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

#shelf { display: flex; flex-direction: column; gap: 32px; }
.grade { display: flex; flex-direction: column; gap: 14px; }
.grade h2 { margin: 0; font-family: var(--font-display); font-size: 24px; font-weight: 750; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; }
.grade h2 span { font: 400 14px var(--font-body); color: var(--muted); }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.tile { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; text-decoration: none; color: inherit; transition: transform .15s, box-shadow .15s; min-width: 0; }
a.tile:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.art { height: 104px; display: grid; place-items: center; color: #FFFFFF; font: 800 46px var(--font-display);
  background: radial-gradient(circle, oklch(100% 0 0 / .2) 0 1px, transparent 1.4px) 0 0 / 9px 9px, linear-gradient(140deg, var(--back-1), var(--back-2)); }
.tile.soon .art { background: var(--surface-2); color: var(--muted); }
.body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 4px; }
.topic { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.name { font-family: var(--font-display); font-size: 19px; font-weight: 700; line-height: 1.15; }
.sample { font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
.badge { align-self: flex-start; margin-top: 6px; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 99px; background: var(--accent); color: var(--accent-fg); }
.tile.soon .badge { background: var(--surface-2); color: var(--muted); }
.empty { color: var(--muted); margin: 0; }
footer { color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); padding-top: 18px; }
@media (max-width: 560px) { .logo { font-size: 20px; } .logo .mm-mark { width: 40px; height: 40px; } .search { max-width: none; margin-left: 0; } }
@media (prefers-reduced-motion: reduce) { .tile { transition: none; } }