/* Classroom 6x - Educational Games
   Light theme: forest green, warm brown, cream and white. */
:root {
  --green: #2e7d32;
  --green-dark: #1b5e20;
  --green-soft: #e6f2e4;
  --green-mid: #a5d6a7;
  --brown: #7b5133;
  --brown-dark: #4e342e;
  --tan: #c8a27a;
  --tan-soft: #efe3cf;
  --cream: #fbf8f1;
  --white: #ffffff;
  --ink: #2b2118;
  --muted: #6d5a49;
  --line: #e6dccb;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(78, 52, 46, .06), 0 4px 14px rgba(78, 52, 46, .07);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 130px; }
body { margin: 0; background: var(--cream); color: var(--ink); font: 16px/1.55 var(--font); }
img { max-width: 100%; display: block; }
a { color: var(--green-dark); }
a:hover { color: var(--green); }
h1, h2, h3 { line-height: 1.2; color: var(--ink); }
button { font: inherit; }
.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 820px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--green); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--tan); outline-offset: 2px; }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 20; background: var(--white); border-bottom: 1px solid var(--line); box-shadow: 0 2px 10px rgba(78, 52, 46, .05); }
.top-in { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 1.12rem; color: var(--green-dark); letter-spacing: -.01em; }
.brand-text small { font-size: .72rem; font-weight: 700; color: var(--brown); text-transform: uppercase; letter-spacing: .08em; }
.search { margin-left: auto; display: flex; align-items: center; width: min(420px, 100%); background: var(--cream); border: 1.5px solid var(--line); border-radius: 999px; padding: 3px 4px 3px 16px; transition: border-color .15s; }
.search:focus-within { border-color: var(--green); background: var(--white); }
.search input { flex: 1; min-width: 0; border: 0; background: transparent; font: inherit; color: var(--ink); padding: 8px 0; outline: none; }
.search input::placeholder { color: #9a8775; }
.search button { border: 0; background: var(--green); color: #fff; width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; cursor: pointer; flex-shrink: 0; }
.search button:hover { background: var(--green-dark); }
.cats-nav { background: var(--green); }
.cats-scroll { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; padding-top: 6px; padding-bottom: 6px; }
.cats-scroll::-webkit-scrollbar { display: none; }
.cats-scroll a { flex-shrink: 0; color: #f3f8f1; text-decoration: none; font-size: .9rem; font-weight: 600; padding: 6px 12px; border-radius: 999px; white-space: nowrap; }
.cats-scroll a:hover { background: rgba(255, 255, 255, .14); color: #fff; }
.cats-scroll a[aria-current="page"] { background: var(--cream); color: var(--green-dark); }

/* ---------- hero ---------- */
.hero { background: linear-gradient(180deg, var(--green-soft), var(--cream)); border-bottom: 1px solid var(--line); }
.hero-in { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: center; padding-top: 36px; padding-bottom: 36px; }
.eyebrow { margin: 0 0 8px; font-size: .8rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--brown); }
.hero h1 { margin: 0 0 12px; font-size: clamp(2rem, 4.6vw, 3.1rem); letter-spacing: -.02em; color: var(--green-dark); }
.hero h1 span { color: var(--brown); font-weight: 700; }
.lede { font-size: 1.08rem; color: var(--muted); margin: 0 0 18px; max-width: 62ch; }
.hero-cats, .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 999px; background: var(--white); border: 1.5px solid var(--tan); color: var(--brown-dark); font-weight: 600; font-size: .92rem; text-decoration: none; }
.chip:hover { border-color: var(--green); color: var(--green-dark); background: var(--green-soft); }
.chip span { font-size: .78rem; color: var(--muted); font-weight: 700; }
.chip-ghost { background: transparent; border-style: dashed; }
.hero-art { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; max-width: 340px; justify-self: end; transform: rotate(2deg); }
.hero-art img { border-radius: 16px; border: 4px solid var(--white); box-shadow: var(--shadow); aspect-ratio: 1; object-fit: cover; }
.hero-art img:nth-child(2) { transform: translateY(14px); }
.hero-art img:nth-child(3) { transform: translateY(-6px); }

/* ---------- sections & grid ---------- */
main { padding-bottom: 32px; }
.block { margin-top: 32px; }
.block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; border-bottom: 2px solid var(--tan-soft); padding-bottom: 8px; }
.block-head h2 { margin: 0; font-size: 1.32rem; position: relative; padding-left: 14px; }
.block-head h2::before { content: ""; position: absolute; left: 0; top: .18em; bottom: .18em; width: 5px; border-radius: 3px; background: var(--green); }
.more { font-size: .92rem; font-weight: 700; color: var(--brown); text-decoration: none; background: none; border: 0; cursor: pointer; padding: 0; white-space: nowrap; }
.more:hover { color: var(--green-dark); text-decoration: underline; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.grid-sm { grid-template-columns: repeat(auto-fill, minmax(124px, 1fr)); gap: 12px; }
.card { display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px; text-decoration: none; color: var(--ink); box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .15s ease, border-color .15s; }
.card:hover { transform: translateY(-3px); border-color: var(--green-mid); box-shadow: 0 8px 22px rgba(46, 125, 50, .16); color: var(--ink); }
.thumb { display: block; aspect-ratio: 1 / 1; border-radius: 10px; overflow: hidden; background: var(--tan-soft); }
.thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .25s ease; }
.card:hover .thumb img { transform: scale(1.05); }
.card-name { margin-top: 8px; font-weight: 700; font-size: .93rem; line-height: 1.25; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.card-cat { margin-top: 2px; font-size: .76rem; color: var(--green); font-weight: 600; }
.empty { color: var(--muted); padding: 18px 0; }

/* ---------- SEO text & FAQ ---------- */
.seo { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; margin-top: 44px; background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 28px; box-shadow: var(--shadow); }
.seo-one { grid-template-columns: 1fr 1fr; }
.seo h2 { margin-top: 0; font-size: 1.25rem; color: var(--green-dark); }
.seo p, .seo li { color: #4a3a2c; }
.faq details { border-bottom: 1px solid var(--line); padding: 10px 0; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--brown-dark); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--green); font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: "\2212"; }
.faq p { margin: 8px 0 2px; }
kbd { background: var(--tan-soft); border: 1px solid var(--tan); border-bottom-width: 2px; border-radius: 5px; padding: 0 6px; font: .85em var(--font); }

/* ---------- page heads, crumbs ---------- */
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; padding: 0; margin: 18px 0 0; font-size: .86rem; color: var(--muted); }
.crumbs li + li::before { content: "\203A"; margin-right: 6px; color: var(--tan); }
.crumbs a { color: var(--brown); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.page-head { margin: 14px 0 22px; }
.page-head h1 { margin: 0 0 8px; font-size: clamp(1.7rem, 3.6vw, 2.4rem); color: var(--green-dark); letter-spacing: -.01em; }
.page-head.center { text-align: center; }
.page-head.center .lede { margin-left: auto; margin-right: auto; }
.big404 { font-size: 5rem; font-weight: 800; margin: 20px 0 0; color: var(--tan); line-height: 1; }
.prose { background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 24px 28px; box-shadow: var(--shadow); }
.prose h2 { color: var(--green-dark); font-size: 1.2rem; margin-top: 1.4em; }

/* ---------- category index ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 16px; }
.cat-card { display: grid; grid-template-columns: 1fr; gap: 4px; background: var(--white); border: 1px solid var(--line); border-radius: 16px; padding: 14px; text-decoration: none; color: var(--ink); box-shadow: var(--shadow); transition: border-color .15s, transform .15s; }
.cat-card:hover { border-color: var(--green-mid); transform: translateY(-2px); color: var(--ink); }
.cat-thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 8px; }
.cat-thumbs img { border-radius: 9px; aspect-ratio: 1; object-fit: cover; }
.cat-name { font-weight: 800; font-size: 1.1rem; color: var(--green-dark); }
.cat-count { font-size: .82rem; font-weight: 700; color: var(--brown); }
.cat-desc { font-size: .9rem; color: var(--muted); }

/* ---------- game page ---------- */
.game-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; margin-top: 12px; align-items: start; }
.game-main h1 { margin: 6px 0 14px; font-size: clamp(1.6rem, 3.4vw, 2.2rem); color: var(--green-dark); }
.game-main h1 span { color: var(--brown); font-weight: 600; }
.player { position: relative; aspect-ratio: 16 / 10; width: 100%; background: var(--brown-dark); border-radius: 16px 16px 0 0; overflow: hidden; }
.player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: #000; }
.poster { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; padding: 16px; isolation: isolate; }
.poster::before { content: ""; position: absolute; inset: -30px; background: var(--bg) center / cover; filter: blur(26px) saturate(1.2); opacity: .55; z-index: -1; }
.poster::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 45%, rgba(43, 33, 24, .15), rgba(43, 33, 24, .7)); z-index: -1; }
.poster img { width: clamp(96px, 22%, 170px); aspect-ratio: 1; object-fit: cover; border-radius: 18px; border: 4px solid rgba(255, 255, 255, .9); box-shadow: 0 10px 30px rgba(0, 0, 0, .35); }
.play-btn { display: inline-flex; align-items: center; gap: 8px; border: 0; cursor: pointer; background: var(--green); color: #fff; font-weight: 800; font-size: 1.08rem; padding: 13px 26px; border-radius: 999px; box-shadow: 0 6px 18px rgba(27, 94, 32, .45); transition: transform .12s, background .12s; max-width: 100%; }
.play-btn:hover { background: var(--green-dark); transform: scale(1.04); }
.poster-note { margin: 0; color: #f6efe3; font-size: .85rem; font-weight: 600; text-shadow: 0 1px 3px rgba(0, 0, 0, .5); }
.player-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; background: var(--white); border: 1px solid var(--line); border-top: 0; border-radius: 0 0 16px 16px; padding: 10px 12px; box-shadow: var(--shadow); }
.pb-title { display: flex; align-items: center; gap: 10px; font-weight: 700; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pb-title img { width: 32px; height: 32px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.pb-actions { display: flex; gap: 8px; flex-shrink: 0; }
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1.5px solid var(--tan); background: var(--white); color: var(--brown-dark); font-weight: 700; font-size: .88rem; padding: 7px 14px; border-radius: 999px; cursor: pointer; }
.btn:hover:not(:disabled) { border-color: var(--green); color: var(--green-dark); }
.btn:disabled { opacity: .45; cursor: default; }
.btn-green { background: var(--green); border-color: var(--green); color: #fff; }
.btn-green:hover:not(:disabled) { background: var(--green-dark); color: #fff; }
.player.is-full { border-radius: 0; }
.about-game { margin-top: 22px; background: var(--white); border: 1px solid var(--line); border-radius: 16px; padding: 22px 24px; box-shadow: var(--shadow); }
.about-game h2 { font-size: 1.2rem; color: var(--green-dark); margin: 0 0 8px; }
.about-game h2:not(:first-child) { margin-top: 20px; }
.about-game p, .about-game li { color: #4a3a2c; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 20px 0 0; }
.facts div { background: var(--cream); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; }
.facts dt { font-size: .74rem; text-transform: uppercase; letter-spacing: .07em; color: var(--brown); font-weight: 700; }
.facts dd { margin: 2px 0 0; font-weight: 700; }
.note { font-size: .88rem; color: var(--muted); margin-bottom: 0; }
.game-side { position: sticky; top: 132px; background: var(--white); border: 1px solid var(--line); border-radius: 16px; padding: 16px; box-shadow: var(--shadow); }
.game-side h2 { margin: 0 0 12px; font-size: 1.05rem; color: var(--brown-dark); }
.side-list { display: grid; gap: 8px; margin-bottom: 12px; }
.side-list a { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 600; font-size: .93rem; padding: 6px; border-radius: 10px; }
.side-list a:hover { background: var(--green-soft); color: var(--green-dark); }
.side-list img { width: 56px; height: 56px; border-radius: 10px; object-fit: cover; flex-shrink: 0; }

/* ---------- footer ---------- */
.foot { background: var(--brown-dark); color: #efe3cf; margin-top: 48px; }
.foot-in { display: grid; grid-template-columns: 1.4fr 1.6fr .8fr; gap: 28px; padding-top: 36px; padding-bottom: 24px; }
.foot .brand-text strong { color: #fff; }
.foot .brand-text small { color: var(--tan); }
.foot p { color: #dccbb3; font-size: .92rem; }
.foot h2 { color: #fff; font-size: 1rem; margin: 4px 0 10px; }
.foot ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 18px; }
.foot-in > div:last-child ul { columns: 1; }
.foot li { margin-bottom: 6px; break-inside: avoid; }
.foot a { color: #efe3cf; text-decoration: none; font-size: .92rem; }
.foot a:hover { color: #fff; text-decoration: underline; }
.foot-note { border-top: 1px solid rgba(239, 227, 207, .15); padding-top: 14px; padding-bottom: 20px; }
.foot-note p { font-size: .8rem; color: #bfa98c; margin: 0; }
.foot-note .foot-links { margin-bottom: 8px; font-size: .88rem; }
.foot-note .foot-links a { color: #efe3cf; font-weight: 600; }

/* ---------- responsive ---------- */
@media (min-width: 1180px) {
  .grid { grid-template-columns: repeat(8, 1fr); }
  .grid-sm { grid-template-columns: repeat(6, 1fr); }
  .game-layout .grid-sm, .block .grid-sm.related { grid-template-columns: repeat(6, 1fr); }
}
@media (max-width: 980px) {
  .game-layout { grid-template-columns: 1fr; }
  .game-side { position: static; }
  .side-list { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .foot-in { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 12px; }
  .top { position: static; }
  .top-in { flex-wrap: wrap; gap: 8px; padding-top: 8px; padding-bottom: 10px; }
  .search { width: 100%; margin-left: 0; }
  .hero-in { grid-template-columns: 1fr; padding-top: 24px; padding-bottom: 24px; }
  .hero-art { display: none; }
  .seo, .seo-one { grid-template-columns: 1fr; padding: 20px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 10px; }
  .grid-sm { grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 10px; }
  .card { padding: 6px; border-radius: 12px; }
  .card-name { font-size: .86rem; }
  .player { aspect-ratio: 4 / 3; }
  .about-game { padding: 18px; }
  .game-side { top: auto; }
  .pb-title { font-size: .9rem; }
  .btn { padding: 7px 11px; }
}
@media (max-width: 480px) {
  .foot-in { grid-template-columns: 1fr; }
  .pb-title img { display: none; }
  .play-btn { font-size: 1rem; padding: 12px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}