/* Sudoku Offline Classic — game page (/sudoku/). Loads after /assets/site.css. */

:root {
  --blue: #1565e8;
  --blue-dark: #0b3fa8;
  --sky: #e9f2ff;
  --yellow: #ffc83d;
  --yellow-soft: #fff4d1;
  --green: #22a45d;
  --green-soft: #e6f7ec;
  --ink: #102043;
  --muted: #55627d;
  --card: #ffffff;
  --bg: #f6f9ff;
  --radius: 20px;
  --shadow: 0 10px 30px rgba(16, 32, 67, 0.10);
  --shadow-lg: 0 24px 60px rgba(21, 101, 232, 0.22);
  --font: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

:where(.sg) :where(h1, h2, h3, p, ul, figure) { margin: 0; padding: 0; }
:where(.sg a) { color: var(--blue); text-decoration: none; }
.wrap { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.hl { color: var(--blue); }


/* Hero */
.hero { background: radial-gradient(1200px 500px at 85% 10%, #cfe2ff 0%, transparent 60%), linear-gradient(180deg, #eaf3ff 0%, var(--bg) 100%); padding: 56px 0 40px; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 40px; }
.pill { display: inline-block; background: var(--yellow-soft); color: #7a5300; font-weight: 800; font-size: 14px; padding: 6px 14px; border-radius: 999px; margin-bottom: 18px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.3rem); line-height: 1.12; font-weight: 900; letter-spacing: -.5px; }
.lead { font-size: 1.15rem; color: var(--muted); margin: 18px 0 26px; max-width: 560px; }
.ticks { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 22px; color: var(--muted); font-weight: 700; font-size: 15px; }
.ticks li::before { content: '✓'; color: var(--green); font-weight: 900; margin-right: 6px; }
.hero__phones { position: relative; height: 560px; }
.hero .st-stores { margin-top: 4px; }
.ph { position: absolute; width: 250px; border-radius: 26px; box-shadow: var(--shadow-lg); }
.ph--front { right: 30px; top: 0; z-index: 2; }
.ph--back { right: 220px; top: 50px; transform: rotate(-6deg); opacity: .97; }

/* Sections */
.sec { padding: 72px 0; }
.sec--tint { background: #fff; }
.sec--zoo { background: linear-gradient(180deg, var(--green-soft) 0%, #f3fbf6 100%); }
.sec__title { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 900; text-align: center; line-height: 1.2; }
.sec__sub { text-align: center; color: var(--muted); max-width: 640px; margin: 12px auto 36px; }

/* Two games */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.duo__card { background: var(--card); border-radius: 24px; padding: 30px; box-shadow: var(--shadow); color: var(--ink); transition: transform .2s, box-shadow .2s; border: 2px solid transparent; }
.duo__card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.duo__card--classic:hover { border-color: #bcd6ff; }
.duo__card--zoo:hover { border-color: #b9e8cb; }
.duo__card h3 { font-size: 1.5rem; font-weight: 900; margin: 18px 0 6px; }
.duo__card p { color: var(--muted); }
.duo__more { display: inline-block; margin-top: 14px; font-weight: 800; color: var(--blue); }
.duo__card--zoo .duo__more { color: var(--green); }
.duo__grid { display: grid; grid-template-columns: repeat(3, 52px); gap: 5px; padding: 8px; background: var(--blue); border-radius: 14px; width: max-content; }
.duo__grid span { width: 52px; height: 52px; border-radius: 9px; background: #fff; display: grid; place-items: center; font-weight: 900; font-size: 24px; color: var(--blue); }
.duo__grid span.on { background: var(--yellow); color: var(--ink); }
.duo__grid--zoo { background: var(--green); }
.duo__grid--zoo span { font-size: 28px; }

/* Split layout */
.split { display: grid; grid-template-columns: 340px 1fr; gap: 56px; align-items: start; }
.split--rev { grid-template-columns: 1fr 340px; }
.split--rev .split__img { order: 2; }
.split__img img { width: 100%; border-radius: 28px; box-shadow: var(--shadow-lg); cursor: zoom-in; position: sticky; top: 90px; }
.split__text h2 { font-size: clamp(1.7rem, 4vw, 2.3rem); font-weight: 900; line-height: 1.2; margin: 8px 0 12px; }
.split__text h3 { font-size: 1.2rem; font-weight: 900; margin: 26px 0 12px; }
.split__text > p { color: var(--muted); font-size: 1.08rem; }
.tag { display: inline-block; font-size: 13px; font-weight: 900; text-transform: uppercase; letter-spacing: .6px; padding: 5px 12px; border-radius: 999px; }
.tag--blue { background: var(--sky); color: var(--blue); }
.tag--green { background: #d3f2df; color: #157a42; }
.levels { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.levels div { background: var(--sky); border-radius: 14px; padding: 12px; }
.levels b { display: block; font-weight: 900; color: var(--blue); }
.levels span { font-size: 14px; color: var(--muted); line-height: 1.4; display: block; margin-top: 2px; }
.list { list-style: none; display: grid; gap: 10px; margin-top: 14px; }
.list li { position: relative; padding-left: 30px; color: var(--muted); }
.list li::before { content: ''; position: absolute; left: 0; top: 6px; width: 18px; height: 18px; border-radius: 6px; background: var(--yellow); box-shadow: inset 0 0 0 4px #fff, 0 0 0 2px var(--yellow); }
.list b { color: var(--ink); }
.sec--zoo .list li::before { background: var(--green); box-shadow: inset 0 0 0 4px #f0faf4, 0 0 0 2px var(--green); }

.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 64px; }
.trio__item { background: #fff; border-radius: 24px; padding: 20px; box-shadow: var(--shadow); }
.trio__item img { width: 70%; margin: 0 auto 18px; border-radius: 20px; box-shadow: var(--shadow); cursor: zoom-in; }
.trio__item figcaption { color: var(--muted); font-size: 15.5px; }
.trio__item figcaption > b:first-child { display: block; color: var(--ink); font-size: 1.2rem; font-weight: 900; margin-bottom: 6px; }

/* How to play */
.how { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.how__step { background: #fff; border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.how__step .num { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--blue); color: #fff; font-weight: 900; font-size: 22px; }
.how__step h3 { font-weight: 900; font-size: 1.2rem; margin: 14px 0 6px; }
.how__step p { color: var(--muted); }
.example { margin-top: 32px; background: var(--yellow-soft); border-radius: var(--radius); padding: 24px; display: flex; align-items: center; gap: 28px; flex-wrap: wrap; justify-content: center; }
.mini { display: grid; grid-template-columns: repeat(9, 40px); gap: 4px; padding: 6px; background: var(--blue); border-radius: 12px; }
.mini span { height: 40px; background: #fff; border-radius: 7px; display: grid; place-items: center; font-weight: 900; color: var(--blue); font-size: 20px; }
.mini span.q { background: var(--yellow); color: var(--ink); }
.example p { max-width: 420px; color: #5b4a17; }

/* Features */
.feats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 36px; }
.feat { background: var(--bg); border-radius: var(--radius); padding: 22px; }
.feat .ico { font-size: 30px; }
.feat h3 { font-weight: 900; font-size: 1.1rem; margin: 8px 0 4px; }
.feat p { color: var(--muted); font-size: 15px; }

/* Gallery */
.gallery { display: flex; gap: 18px; overflow-x: auto; padding: 8px 20px 24px; scroll-snap-type: x mandatory; max-width: 1180px; margin: 0 auto; }
.gallery img { flex: 0 0 auto; width: 220px; border-radius: 22px; box-shadow: var(--shadow); scroll-snap-align: center; cursor: zoom-in; transition: transform .2s; }
.gallery img:hover, .gallery img:focus { transform: translateY(-4px); outline: none; }

/* FAQ */
.faq { max-width: 780px; }
.faq .sec__title { margin-bottom: 28px; }
.faq details { background: var(--bg); border-radius: 16px; padding: 4px 20px; margin-bottom: 12px; }
.faq summary { cursor: pointer; font-weight: 800; padding: 14px 0; list-style: none; position: relative; padding-right: 30px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 0; top: 10px; font-size: 24px; color: var(--blue); font-weight: 900; }
.faq details[open] summary::after { content: '–'; }
.faq details p { color: var(--muted); padding-bottom: 16px; }

/* CTA */
.cta { background: linear-gradient(135deg, #1565e8 0%, #0b3fa8 100%); color: #fff; padding: 72px 0; text-align: center; }
.cta__icon { margin: 0 auto 18px; border-radius: 22px; box-shadow: 0 12px 30px rgba(0,0,0,.25); }
.cta h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 900; }
.cta p { opacity: .9; margin: 8px 0 26px; }

/* Responsive */
@media (max-width: 980px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__phones { height: 440px; max-width: 420px; margin: 0 auto; width: 100%; }
  .ph { width: 200px; }
  .ph--front { right: 10%; }
  .ph--back { right: auto; left: 8%; }
  .split, .split--rev { grid-template-columns: 1fr; gap: 32px; }
  .split--rev .split__img { order: 0; }
  .split__img { max-width: 300px; margin: 0 auto; }
  .split__img img { position: static; }
  .trio, .how { grid-template-columns: 1fr; }
  .trio__item img { width: 60%; }
  .feats { grid-template-columns: repeat(2, 1fr); }
  .levels { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .hero { padding-top: 34px; }
  .hero__phones { height: 360px; }
  .ph { width: 165px; border-radius: 20px; }
  .duo { grid-template-columns: 1fr; }
  .feats { grid-template-columns: 1fr; }
  .duo__grid { grid-template-columns: repeat(3, 44px); }
  .duo__grid span { width: 44px; height: 44px; font-size: 20px; }
  .mini { grid-template-columns: repeat(9, 1fr); width: 100%; }
  .mini span { height: 32px; font-size: 16px; }
  .sec { padding: 54px 0; }
  .gallery img { width: 180px; }
    }