/* Expresso Codes · shared styles. Self-contained, no external fonts/CDNs.
   Palette ported 1:1 from the Sudoku Showdown app (iOS AppTheme.swift /
   Android AppTheme.kt): deep navy accent + warm gold, cream→blue gradients in
   light, near-black navy in dark. Light is the default; dark applies via the
   user's system setting OR an explicit [data-theme] override from the switcher. */

:root {
  /* ---- light (app LightAppColors) ---- */
  --bg-top:   #f5f2eb;
  --bg-mid:   #f0f5fc;
  --bg-bot:   #e6edfa;
  --surface:      #ffffff;
  --surface-2:    #eef4fc;
  --border:       rgba(33, 64, 112, .16);
  --text:         #1c242e;
  --muted:        #6b7380;
  --accent:       #214070;   /* navy */
  --accent-2:     #294d85;   /* navy hover / selection */
  --accent-soft:  #e6f0fc;
  --accent-warm:  #c8902a;   /* gold (slightly deepened for contrast on cream) */
  --on-accent:    #ffffff;
  --header-bg:    rgba(245, 242, 235, .82);
  --badge-bg:     #11161f;
  --badge-border: #2b3340;
  --badge-text:   #ffffff;
  --callout-bg:     rgba(200, 144, 42, .10);
  --callout-border: rgba(200, 144, 42, .38);
  --callout-strong: #9a6c14;
  --shadow:  0 10px 34px rgba(33, 64, 112, .12);

  --radius: 16px;
  --maxw:   1040px;
}

/* dark when the OS prefers it and the user hasn't forced light */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-top:   #0a0d14;
    --bg-mid:   #121721;
    --bg-bot:   #1a212e;
    --surface:      #212636;
    --surface-2:    #2e364a;
    --border:       rgba(255, 255, 255, .15);
    --text:         #f0f2fa;
    --muted:        #bfc7d6;
    --accent:       #91bafa;   /* light blue */
    --accent-2:     #a1c2f5;
    --accent-soft:  #384561;
    --accent-warm:  #f2bf52;   /* gold */
    --on-accent:    #0a0d14;
    --header-bg:    rgba(10, 13, 20, .74);
    --badge-bg:     #2e364a;
    --badge-border: rgba(255, 255, 255, .18);
    --badge-text:   #f0f2fa;
    --callout-bg:     rgba(242, 191, 82, .10);
    --callout-border: rgba(242, 191, 82, .34);
    --callout-strong: #f2bf52;
    --shadow:  0 12px 40px rgba(0, 0, 0, .42);
  }
}

/* dark when the user explicitly chose it via the switcher */
:root[data-theme="dark"] {
  --bg-top:   #0a0d14;
  --bg-mid:   #121721;
  --bg-bot:   #1a212e;
  --surface:      #212636;
  --surface-2:    #2e364a;
  --border:       rgba(255, 255, 255, .15);
  --text:         #f0f2fa;
  --muted:        #bfc7d6;
  --accent:       #91bafa;
  --accent-2:     #a1c2f5;
  --accent-soft:  #384561;
  --accent-warm:  #f2bf52;
  --on-accent:    #0a0d14;
  --header-bg:    rgba(10, 13, 20, .74);
  --badge-bg:     #2e364a;
  --badge-border: rgba(255, 255, 255, .18);
  --badge-text:   #f0f2fa;
  --callout-bg:     rgba(242, 191, 82, .10);
  --callout-border: rgba(242, 191, 82, .34);
  --callout-strong: #f2bf52;
  --shadow:  0 12px 40px rgba(0, 0, 0, .42);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 640px at 82% -8%, color-mix(in srgb, var(--accent-warm) 18%, transparent), transparent 60%),
    linear-gradient(135deg, var(--bg-top) 0%, var(--bg-mid) 52%, var(--bg-bot) 100%);
  background-attachment: fixed;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s ease, color .2s ease;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---- header / nav ---- */
header.site {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: saturate(160%) blur(12px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 14px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); letter-spacing: .2px; }
.brand .mark {
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-warm));
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 14px;
}
nav.site { display: flex; align-items: center; }
nav.site a { color: var(--muted); margin-left: 22px; font-weight: 600; font-size: 15px; }
nav.site a:hover { color: var(--text); }

/* theme switcher */
.theme-toggle {
  margin-left: 20px; width: 36px; height: 36px; flex: none;
  display: grid; place-items: center; cursor: pointer;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  font-size: 16px; line-height: 1; transition: border-color .15s, transform .15s, background .2s;
}
.theme-toggle:hover { border-color: var(--accent); transform: translateY(-1px); }
.theme-toggle .theme-ico { pointer-events: none; }

/* ---- hero ---- */
.hero { padding: 78px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.eyebrow { color: var(--accent-warm); font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase; font-size: 13px; }
h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.05; margin: 14px 0 16px; letter-spacing: -.5px; }
h2 { font-size: clamp(24px, 3vw, 34px); margin: 0 0 14px; letter-spacing: -.3px; }
.lede { font-size: 19px; color: var(--muted); max-width: 56ch; }

.app-art {
  border-radius: 28px; box-shadow: var(--shadow);
  width: 100%; max-width: 320px; aspect-ratio: 1/1; object-fit: cover;
  border: 1px solid var(--border); margin: 0 auto; display: block;
}

/* ---- buttons / store badges ---- */
.btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.badge {
  display: inline-flex; align-items: center; gap: 11px;
  background: var(--badge-bg); color: var(--badge-text); border: 1px solid var(--badge-border);
  padding: 11px 18px; border-radius: 13px; font-weight: 600; min-width: 192px;
}
.badge:hover { color: var(--badge-text); border-color: var(--accent); transform: translateY(-1px); transition: .15s; }
.badge .glyph { font-size: 26px; line-height: 1; }
.badge small { display: block; font-size: 11px; color: color-mix(in srgb, var(--badge-text) 78%, transparent); font-weight: 500; letter-spacing: .3px; }
.badge b { display: block; font-size: 17px; line-height: 1.15; }
.badge.soon { opacity: .6; cursor: default; }
.badge.soon:hover { transform: none; border-color: var(--badge-border); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: var(--on-accent); font-weight: 700;
  padding: 12px 22px; border-radius: 12px; border: 1px solid transparent;
}
.btn:hover { color: var(--on-accent); background: var(--accent-2); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn.ghost:hover { color: var(--text); border-color: var(--accent); background: transparent; }

/* ---- cards / features ---- */
section { padding: 40px 0; }
.section-title { text-align: center; margin-bottom: 8px; }
.section-sub { text-align: center; color: var(--muted); margin: 0 auto 34px; max-width: 60ch; }

.grid { display: grid; gap: 20px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); }
.card .ico { font-size: 26px; display: block; margin-bottom: 12px; }

/* game tile (company landing) */
a.game-tile { display: block; color: var(--text); }
a.game-tile:hover { color: var(--text); transform: translateY(-3px); transition: .18s; }
a.game-tile .card { display: flex; gap: 18px; align-items: center; }
a.game-tile img { width: 76px; height: 76px; border-radius: 18px; border: 1px solid var(--border); }
a.game-tile .meta { flex: 1; }
a.game-tile .pill { font-size: 12px; color: var(--accent-warm); font-weight: 700; letter-spacing: .4px; }
a.game-tile .arrow { color: var(--muted); font-size: 22px; }

/* ---- legal / doc pages ---- */
.doc { padding: 48px 0 64px; }
.doc .card { padding: 34px; }
.doc h1 { font-size: 34px; }
.doc h2 { font-size: 22px; margin-top: 30px; }
.doc h3 { font-size: 17px; margin-top: 22px; margin-bottom: 6px; }
.doc p, .doc li { color: var(--text); }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc .updated { color: var(--muted); font-size: 14px; margin-top: -6px; }
.doc table { width: 100%; border-collapse: collapse; margin: 14px 0; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border: 1px solid var(--border); vertical-align: top; }
.doc th { background: var(--surface-2); }
.doc code { background: var(--surface-2); padding: 1px 6px; border-radius: 6px; font-size: .92em; }
.callout {
  background: var(--callout-bg); border: 1px solid var(--callout-border);
  border-radius: 12px; padding: 16px 18px; margin: 18px 0; color: var(--text);
}
.callout b { color: var(--callout-strong); }

.crumbs { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--accent); }

/* ---- footer ---- */
footer.site { border-top: 1px solid var(--border); margin-top: 40px; padding: 30px 0 50px; color: var(--muted); font-size: 14px; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; }
footer.site a { color: var(--muted); margin-left: 18px; }
footer.site a:hover { color: var(--accent); }
footer.site .links { display: flex; flex-wrap: wrap; }
footer.site .links a:first-child { margin-left: 0; }

/* ---- responsive ---- */
@media (max-width: 820px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-grid .lede { margin-left: auto; margin-right: auto; }
  .btns { justify-content: center; }
  .grid.cols-3 { grid-template-columns: 1fr; }
  .grid.cols-2 { grid-template-columns: 1fr; }
  nav.site a { margin-left: 14px; font-size: 14px; }
  .theme-toggle { margin-left: 12px; }
  footer.site .wrap { justify-content: center; text-align: center; }
}