/* Shared styles for every ColourFun page: theme tokens, base rules and the site header. */

/* ---------- Theme ---------- */
:root {
  color-scheme: light dark;
  --bg: #f1efe9;
  --panel: #ffffff;
  --ink: #141414;
  --muted: #5f5d58;
  --border: #d8d4cb;
  --ring: #141414;
  --accent: #1F5FBF;
  --accent-ink: #ffffff;
  --font: "Archivo", Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161616;
    --panel: #242424;
    --ink: #f2f0ea;
    --muted: #b4b0a6;
    --border: #464646;
    --ring: #ffffff;
  }
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: var(--font); background: var(--bg); color: var(--ink); line-height: 1.35; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; }

/* ---------- Site header ---------- */
.site-head {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  min-height: 44px;
  color: var(--ink); text-decoration: none;
  font-weight: 800; font-size: 15px; letter-spacing: .08em; text-transform: uppercase;
  flex: none;
}
.brand svg { width: 26px; height: 26px; display: block; }
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav > ul { display: flex; gap: 4px; }
.site-nav a {
  display: flex; align-items: center;
  min-height: 40px; padding: 0 12px;
  border-radius: 8px;
  color: var(--ink); text-decoration: none; font-weight: 600; font-size: 14px;
  white-space: nowrap;
}
.site-nav a:hover { background: var(--bg); }
.site-nav a[aria-current="page"] { background: var(--accent); color: var(--accent-ink); }

/* Menu groups: a button that opens a dropdown of pages */
.nav-group { position: relative; }
.nav-toggle {
  display: flex; align-items: center; gap: 8px;
  min-height: 44px; padding: 0 12px;
  background: transparent; color: var(--ink);
  border: 0; border-radius: 10px;
  font: inherit; font-weight: 600; font-size: 14px; cursor: pointer; white-space: nowrap;
}
.nav-toggle::after {
  content: ""; width: 6px; height: 6px;
  border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
}
.nav-toggle:hover, .nav-group.open > .nav-toggle { background: var(--bg); }
.nav-group.has-current > .nav-toggle { box-shadow: inset 0 -3px 0 var(--accent); }
.nav-group > ul {
  display: none;
  position: absolute; top: calc(100% + 6px); left: 0; z-index: 20;
  min-width: 220px; padding: 6px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, .16);
}
.nav-group.open > ul { display: grid; gap: 2px; }
.head-end { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.for-z {
  display: flex; align-items: center;
  min-height: 36px; padding: 0 14px;
  border: 2px solid var(--ink); border-radius: 999px;
  font-weight: 800; font-size: 15px; letter-spacing: .04em; white-space: nowrap;
}
.menu-btn {
  display: none;
  align-items: center; gap: 8px;
  min-height: 44px; padding: 0 12px;
  background: transparent; color: var(--ink);
  border: 2px solid var(--border); border-radius: 10px;
  font: inherit; font-weight: 700; font-size: 14px; cursor: pointer;
}
.menu-btn svg { width: 18px; height: 18px; }

@media (max-width: 720px) {
  .site-head { padding: 8px 16px; gap: 10px; }
  .menu-btn { display: flex; }
  .site-nav {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px 12px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, .12);
  }
  .site-head.open .site-nav { display: block; }
  .site-nav > ul { flex-direction: column; gap: 6px; }
  /* On small screens every group is listed open under its heading */
  .nav-toggle { pointer-events: none; min-height: 28px; padding: 0 4px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
  .nav-toggle::after { display: none; }
  .nav-group.has-current > .nav-toggle { box-shadow: none; }
  .nav-group > ul { display: grid; position: static; min-width: 0; padding: 0; border: 0; box-shadow: none; background: none; }
  .site-nav { max-height: calc(100vh - 70px); overflow: auto; }
}

@media print {
  .site-head { display: none !important; }
}