/* Tumbix · securecmd.com/games/tumbix/
   Colors from the app icon. System fonts only: nothing is loaded from other servers. */
:root {
  --indigo: #2e2a5c;
  --indigo-deep: #1e1a45;
  --coral: #ff6b6b;
  --sun: #ffd23f;
  --mint: #3ddc97;
  --sky: #4ea8ff;
  --ink: #1d1b2e;
  --muted: #5d5a73;
  --paper: #f6f5fb;
  --card: #ffffff;
  --line: #e3e1ef;
  --link: #3b5bdb;
  --font: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1f0f8;
    --muted: #b3b0c8;
    --paper: #15132b;
    --card: #211e3d;
    --line: #34305a;
    --link: #8fb3ff;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
}

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

.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 max(20px, env(safe-area-inset-left)) 0 max(20px, env(safe-area-inset-right));
}

/* Header */

.hero {
  color: #fff;
  background: linear-gradient(180deg, var(--indigo) 0%, var(--indigo-deep) 100%);
  padding: 56px 0 64px;
  position: relative;
  overflow: hidden;
}

.hero .wrap {
  display: flex;
  gap: 36px;
  align-items: center;
  position: relative;
}

.hero .icon {
  width: 160px;
  height: 160px;
  border-radius: 36px;
  flex: none;
  box-shadow: 0 18px 40px rgb(8 6 30 / 0.45);
}

.hero h1 {
  margin: 0 0 6px;
  font-size: 54px;
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.hero .lead { margin: 0 0 8px; font-size: 21px; }

.hero .small { margin: 0 0 22px; color: rgb(255 255 255 / 0.75); }

.lang {
  position: absolute;
  top: 16px;
  right: max(20px, env(safe-area-inset-right));
  font-size: 15px;
  z-index: 1;
}

.lang a { color: rgb(255 255 255 / 0.85); }

.store {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  background: #fff;
  color: var(--indigo);
  font-weight: 700;
  text-decoration: none;
}

.store[aria-disabled="true"] { cursor: default; }

/* Falling blocks along the bottom of the header, as on the board. */
.blocks {
  position: absolute;
  inset: auto 0 0 0;
  height: 18px;
  display: flex;
}

.blocks span { flex: 1; }
.blocks span:nth-child(4n + 1) { background: var(--coral); }
.blocks span:nth-child(4n + 2) { background: var(--sun); }
.blocks span:nth-child(4n + 3) { background: var(--mint); }
.blocks span:nth-child(4n + 4) { background: var(--sky); }

/* Content */

main.wrap { padding-top: 36px; padding-bottom: 24px; }

section { margin: 44px 0; }

h2 { font-size: 28px; margin: 0 0 16px; font-weight: 800; }

.shots {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 6px 2px 18px;
  -webkit-overflow-scrolling: touch;
}

.shots figure {
  margin: 0;
  flex: none;
  width: 230px;
  scroll-snap-align: start;
  text-align: center;
}

.shots img {
  width: 230px;
  height: auto;
  border-radius: 26px;
  border: 1px solid var(--line);
  display: block;
  background: var(--card);
}

.shots figcaption { margin-top: 10px; font-size: 15px; color: var(--muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 18px 16px;
  border-top: 6px solid var(--accent, var(--coral));
}

.card:nth-child(4n + 2) { --accent: var(--sun); }
.card:nth-child(4n + 3) { --accent: var(--mint); }
.card:nth-child(4n + 4) { --accent: var(--sky); }

.card b { display: block; font-size: 18px; margin-bottom: 4px; }

.card p { margin: 0; color: var(--muted); }

ul.plain { padding-left: 1.2em; margin: 0; }

ul.plain li { margin: 6px 0; }

.small { font-size: 15px; color: var(--muted); }

/* Policy page */

.doc { max-width: 720px; }

.doc h1 { font-size: 40px; margin: 8px 0 4px; font-weight: 800; }

.doc h2 { font-size: 22px; margin-top: 32px; }

.back { display: inline-block; margin-top: 8px; text-decoration: none; }

footer {
  border-top: 1px solid var(--line);
  padding: 24px 0 calc(32px + env(safe-area-inset-bottom));
  color: var(--muted);
  font-size: 15px;
}

footer nav { display: flex; flex-wrap: wrap; gap: 6px 20px; margin-bottom: 8px; }

@media (max-width: 640px) {
  .hero { padding: 48px 0 52px; }
  .hero .wrap { flex-direction: column; align-items: flex-start; gap: 22px; }
  .hero .icon { width: 112px; height: 112px; border-radius: 25px; }
  .hero h1 { font-size: 42px; }
  .hero .lead { font-size: 19px; }
  .shots figure, .shots img { width: 200px; }
}