/* ===========================================================================
   STEM Camp 2026 — Family Site
   Bright, friendly, brand-matched to the Bit Quest coding game.
   No build step; one stylesheet for the whole static site.
   =========================================================================== */

:root {
  --brand: #6d5efc;
  --branddark: #4c3fd6;
  --brandsoft: #ece9ff;
  --accent: #ffb020;
  --accentdark: #f59300;
  --ink: #28243d;
  --inksoft: #6b6586;
  --paper: #fbfaff;
  --card: #ffffff;
  --line: #e7e2f3;
  --good: #2bb673;

  /* topic accent colors */
  --c-design: #2e8bff;
  --c-crash: #ff5d6c;
  --c-robot: #8b6cff;
  --c-sensor: #16b8a6;
  --c-sound: #ff9f1c;
  --c-color: #e052b0;
  --c-build: #c9871f;
  --c-solar: #36c46b;

  --radius: 18px;
  --shadow: 0 12px 30px -18px rgba(40, 36, 61, 0.5);
  --font-display: "Fredoka", ui-rounded, "Segoe UI", system-ui, sans-serif;
  --font-body: "Nunito", ui-sans-serif, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(1100px 560px at 12% -8%, #ffffff 0%, transparent 55%),
    radial-gradient(820px 520px at 108% 2%, #fff0d6 0%, transparent 52%),
    radial-gradient(760px 700px at -6% 108%, #e0f7ef 0%, transparent 58%),
    radial-gradient(760px 640px at 100% 112%, #efe7ff 0%, transparent 58%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.01em; line-height: 1.15; }
a { color: var(--branddark); }
img { max-width: 100%; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 18px; }

/* skip link for accessibility */
.skip { position: absolute; left: -999px; top: 0; background: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 12px; top: 12px; }

:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; border-radius: 6px; }

/* ---- Top nav ------------------------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 14px; height: 60px; }
.brand { display: flex; align-items: center; gap: 9px; font-family: var(--font-display); font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; }
.brand .logo { width: 34px; height: 34px; flex: none; }
.brand span { color: var(--brand); }
.nav nav { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
.nav nav a {
  text-decoration: none; color: var(--inksoft); font-weight: 700; font-size: 15px;
  padding: 7px 11px; border-radius: 10px;
}
.nav nav a:hover { background: var(--brandsoft); color: var(--branddark); }
.nav nav a.active { background: var(--brand); color: #fff; }
.navtoggle { display: none; margin-left: auto; background: var(--brandsoft); border: 0; border-radius: 10px; padding: 8px 10px; font-size: 18px; cursor: pointer; }

@media (max-width: 760px) {
  .nav nav { position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 18px 14px; display: none; }
  .nav nav.open { display: flex; }
  .navtoggle { display: block; }
}

/* ---- Buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  font-family: var(--font-display); font-weight: 600; text-decoration: none;
  padding: 12px 20px; border-radius: 14px; border: 0; cursor: pointer; font-size: 16px;
  transition: transform .06s ease, filter .12s ease, box-shadow .12s ease;
}
.btn:active { transform: translateY(1px) scale(.99); }
.btn-primary { background: linear-gradient(180deg, var(--brand), var(--branddark)); color: #fff; box-shadow: 0 10px 22px -12px var(--brand); }
.btn-accent { background: linear-gradient(180deg, var(--accent), var(--accentdark)); color: #4a2c00; box-shadow: 0 10px 22px -12px var(--accent); }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn-primary:hover, .btn-accent:hover { filter: brightness(1.06); }
.btn-ghost:hover { background: var(--brandsoft); }

/* ---- Hero ---------------------------------------------------------------- */
.hero { padding: 46px 0 18px; text-align: center; }
.hero .kicker { font-family: var(--font-display); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--accentdark); font-size: 13px; }
.hero h1 { font-size: clamp(38px, 7vw, 66px); margin: 8px 0 4px; }
.hero h1 .pop { color: var(--brand); }
.hero p.lead { font-size: clamp(17px, 2.4vw, 21px); color: var(--inksoft); max-width: 620px; margin: 8px auto 0; font-weight: 600; }
.hero .cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 22px; }
.hero .dates { margin-top: 16px; display: inline-flex; gap: 8px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; font-weight: 700; color: var(--inksoft); }

/* ---- Section headers ----------------------------------------------------- */
.section { padding: 34px 0; }
.section > .wrap > h2 { font-size: clamp(26px, 4vw, 36px); margin: 0 0 6px; }
.section .subhead { color: var(--inksoft); font-weight: 600; max-width: 640px; margin: 0 0 22px; }

/* ---- Day strip ----------------------------------------------------------- */
.days { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.day-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px; text-decoration: none; color: var(--ink);
  display: flex; flex-direction: column; gap: 6px; transition: transform .12s ease;
}
.day-card:hover { transform: translateY(-4px); }
.day-card .badge { align-self: flex-start; font-family: var(--font-display); font-weight: 700; font-size: 13px; color: #fff; background: var(--brand); border-radius: 999px; padding: 3px 12px; }
.day-card h3 { margin: 8px 0 2px; font-size: 22px; }
.day-card .theme { color: var(--inksoft); font-weight: 600; font-size: 15px; }
.day-card .more { margin-top: auto; color: var(--branddark); font-weight: 700; padding-top: 10px; }

/* ---- Activity / topic cards grid ---------------------------------------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.tile {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; text-decoration: none; color: var(--ink);
  display: flex; flex-direction: column; gap: 8px; transition: transform .12s ease;
  border-top: 5px solid var(--accent);
}
.tile:hover { transform: translateY(-4px); }
.tile .emoji { font-size: 34px; line-height: 1; }
.tile h3 { margin: 2px 0; font-size: 19px; }
.tile p { margin: 0; color: var(--inksoft); font-weight: 600; font-size: 14.5px; }
.tile .tag { margin-top: auto; font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; color: var(--inksoft); padding-top: 8px; }

/* topic color variants */
.t-design { border-top-color: var(--c-design); } .t-design .emoji { filter: none; }
.t-crash { border-top-color: var(--c-crash); }
.t-robot { border-top-color: var(--c-robot); }
.t-sensor { border-top-color: var(--c-sensor); }
.t-sound { border-top-color: var(--c-sound); }
.t-color { border-top-color: var(--c-color); }
.t-build { border-top-color: var(--c-build); }
.t-solar { border-top-color: var(--c-solar); }

/* ---- Activity detail blocks (day pages) --------------------------------- */
.activity {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px; margin: 18px 0; scroll-margin-top: 76px;
}
.activity .head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.activity .head .ic { font-size: 34px; line-height: 1; }
.activity .head h3 { margin: 0; font-size: 23px; }
.activity .when { color: var(--inksoft); font-weight: 700; font-size: 14px; background: var(--brandsoft); border-radius: 999px; padding: 3px 12px; }
.activity .lead-line { font-size: 17px; font-weight: 700; margin: 12px 0 4px; }
.activity p { margin: 6px 0; }
.callout {
  border-radius: 14px; padding: 12px 16px; margin: 12px 0; font-weight: 600;
}
.callout h4 { margin: 0 0 4px; font-size: 15px; font-family: var(--font-display); display: flex; align-items: center; gap: 7px; }
.callout.fact { background: #fff7e6; border: 1px solid #f3dca0; color: #6a4e00; }
.callout.talk { background: #eafaf2; border: 1px solid #b7e8cf; color: #14512f; }
.callout.home { background: var(--brandsoft); border: 1px solid #d6cffd; color: #342a7a; }
.learnmore { margin: 14px 0 0; }
.learnmore h4 { font-size: 15px; margin: 0 0 6px; color: var(--inksoft); text-transform: uppercase; letter-spacing: .04em; }
.learnmore ul { margin: 0; padding-left: 18px; }
.learnmore li { margin: 5px 0; font-weight: 600; }
.learnmore a { font-weight: 700; }
.safe { font-size: 13px; color: var(--inksoft); }

/* a little "skills" pill row */
.skills { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 0; }
.skills span { font-size: 12px; font-weight: 800; background: #f2eefe; color: var(--branddark); border-radius: 999px; padding: 3px 10px; }

/* ---- Callout banners (home) --------------------------------------------- */
.banner {
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; align-items: center;
  background: linear-gradient(120deg, #efeaff, #fff 60%); border: 1px solid var(--line);
  border-radius: 22px; padding: 26px; box-shadow: var(--shadow);
}
.banner.alt { background: linear-gradient(120deg, #fff3df, #fff 60%); }
.banner h2 { margin: 0 0 6px; font-size: 30px; }
.banner p { margin: 0 0 14px; color: var(--inksoft); font-weight: 600; }
.banner .art { display: grid; place-items: center; }
@media (max-width: 720px) { .banner { grid-template-columns: 1fr; } .banner .art { order: -1; } }

/* ---- Games -------------------------------------------------------------- */
.game {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px; margin: 18px 0; scroll-margin-top: 76px;
}
.game .ghead { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.game .ghead .ic { font-size: 30px; }
.game .ghead h3 { margin: 0; font-size: 22px; }
.game .ghead .pill { font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; color: #fff; background: var(--brand); border-radius: 999px; padding: 3px 10px; }
.game .blurb { color: var(--inksoft); font-weight: 600; margin: 8px 0 14px; }
.game-stage { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.game-canvas { width: 100%; max-width: 520px; background: #0f1422; border-radius: 14px; touch-action: manipulation; }
.game-controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: center; }
.game-readout { font-family: var(--font-display); font-weight: 700; font-size: 18px; min-height: 26px; text-align: center; }
.chip { display: inline-flex; align-items: center; gap: 6px; background: var(--brandsoft); color: var(--branddark); font-weight: 800; border-radius: 999px; padding: 6px 12px; font-size: 14px; }
select, .field { font-family: var(--font-body); font-weight: 700; border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; background: #fff; color: var(--ink); }

/* micro:bit LED pad */
.led-pad { display: grid; grid-template-columns: repeat(5, 44px); grid-template-rows: repeat(5, 44px); gap: 8px; background: #14110f; padding: 14px; border-radius: 14px; }
.led { width: 44px; height: 44px; border-radius: 9px; background: #2a1414; cursor: pointer; transition: background .08s, box-shadow .08s; }
.led.on { background: #ff3b30; box-shadow: 0 0 14px rgba(255,64,52,.7); }

/* ---- Parents page ------------------------------------------------------- */
.qbox { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin: 16px 0; }
.qbox h3 { margin: 0 0 8px; }
.qbox ul { margin: 0; padding-left: 18px; } .qbox li { margin: 6px 0; font-weight: 600; }

/* ---- Footer ------------------------------------------------------------- */
footer.foot { margin-top: 30px; border-top: 1px solid var(--line); background: rgba(255,255,255,.7); }
footer.foot .wrap { padding: 26px 18px; display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: center; color: var(--inksoft); font-weight: 600; }
footer.foot a { font-weight: 700; }

/* utilities */
.center { text-align: center; }
.mt { margin-top: 22px; }
.muted { color: var(--inksoft); }
@media (max-width: 760px) { .days { grid-template-columns: 1fr; } }