@font-face {
  font-family: "Mojikiki Kyokasho";
  src: url("../assets/fonts/KleeOne-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Mojikiki Kyokasho";
  src: url("../assets/fonts/KleeOne-SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 10%, rgba(255, 122, 168, 0.28), transparent 24rem),
    radial-gradient(circle at 90% 18%, rgba(109, 227, 179, 0.32), transparent 24rem),
    linear-gradient(145deg, #fff8e7 0%, #f0fbff 54%, #fff1f6 100%);
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
}

button,
input,
select {
  font: inherit;
}

button {
  touch-action: manipulation;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.app-shell {
  width: min(1100px, calc(100% - 28px));
  margin: 0 auto;
  padding: 22px 0 36px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

/* ---------- 画面切り替え: body[data-screen] ---------- */

.screen {
  display: none;
}

body[data-screen="home"] #homeScreen,
body[data-screen="subject"] #subjectScreen {
  display: block;
}

/* アクティビティ画面はキオスク風の固定全画面(スマホの誤スクロール防止) */
body[data-screen="quiz"],
body[data-screen="trace"],
body[data-screen="puzzle"],
body[data-screen="blend"] {
  position: fixed;
  inset: 0;
  width: 100%;
  overflow: hidden;
}

body[data-screen="quiz"] .app-shell,
body[data-screen="trace"] .app-shell,
body[data-screen="puzzle"] .app-shell,
body[data-screen="blend"] .app-shell {
  width: 100%;
  height: 100svh;
  padding: 0;
}

body[data-screen="quiz"] #quizScreen,
body[data-screen="trace"] #traceScreen,
body[data-screen="puzzle"] #puzzleScreen,
body[data-screen="blend"] #blendScreen {
  display: flex;
  flex-direction: column;
  height: 100svh;
  overflow: hidden;
}

.activity-screen {
  min-height: 0;
  padding:
    max(16px, env(safe-area-inset-top))
    max(16px, env(safe-area-inset-right))
    max(18px, env(safe-area-inset-bottom))
    max(16px, env(safe-area-inset-left));
  gap: 14px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 760px) {
  .activity-screen {
    padding:
      max(12px, env(safe-area-inset-top))
      max(12px, env(safe-area-inset-right))
      max(14px, env(safe-area-inset-bottom))
      max(12px, env(safe-area-inset-left));
  }
}