:root {
  --bg: #fff6e9;
  --card: #ffffff;
  --ink: #2b2118;
  --muted: #7a6a5c;
  --accent: #e8702a;
  --accent-dark: #c2561a;
  --good: #c9f0c5;
  --passed: #e9f3e6;
  --bad: #c0392b;
  --line: #f0dcc4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 20px;
  line-height: 1.5;
}

body.center { display: grid; place-items: center; padding: 16px; }

.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 20px;
  background: var(--card);
  border-bottom: 2px solid var(--line);
}
.brand { font-weight: 700; font-size: 22px; margin-right: auto; }
.score { font-size: 22px; white-space: nowrap; }

main#app { max-width: 860px; margin: 24px auto; padding: 0 16px; }

.card {
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 6px 0 var(--line);
}
.card.login { width: 100%; max-width: 420px; text-align: center; }
.view { text-align: center; }

h1 { font-size: 34px; margin: 8px 0 12px; }
h2 { font-size: 26px; margin: 4px 0 16px; }
.mascot { font-size: 84px; line-height: 1.1; }

label { display: block; text-align: left; font-weight: 600; margin: 14px 0; }
input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 12px 14px;
  font: inherit;
  font-size: 24px;
  border: 2px solid var(--line);
  border-radius: 14px;
}
input:focus-visible, button:focus-visible, .word:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

button { font: inherit; cursor: pointer; }
button.big {
  padding: 14px 32px;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 18px;
  box-shadow: 0 5px 0 var(--accent-dark);
}
button.big:active { transform: translateY(3px); box-shadow: 0 2px 0 var(--accent-dark); }
button.link { background: none; border: 0; color: var(--muted); text-decoration: underline; font-size: 18px; }

.error, .feedback.bad { color: var(--bad); font-weight: 600; }
.feedback { min-height: 1.6em; font-size: 24px; font-weight: 700; }
.feedback.good { color: #1e7d32; }
.hint { color: var(--muted); font-size: 17px; }

.progress {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 17px;
  text-align: left;
}
.mic { text-align: right; }

.reading {
  text-align: left;
  font-size: 30px;
  line-height: 2;
  margin: 8px 0 16px;
}
.word {
  padding: 2px 3px;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s;
}
.word:hover { background: #ffe9d2; }
.word.passed { background: var(--passed); }
.word.hit { background: var(--good); }
.word.current { box-shadow: 0 4px 0 var(--accent); }
.word.practiced { text-decoration: underline dotted var(--accent) 3px; text-underline-offset: 6px; }

.actions { display: flex; justify-content: flex-end; align-items: center; gap: 20px; min-height: 64px; }

.question { font-size: 34px; font-weight: 700; margin: 20px 0; }
#math-form { display: flex; justify-content: center; align-items: center; gap: 16px; flex-wrap: wrap; }
#math-answer { width: 160px; margin: 0; text-align: center; font-size: 32px; }

.stickers { font-size: 40px; margin-top: 20px; letter-spacing: 6px; }

.practice {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(43, 33, 24, 0.55);
}
.practice[hidden] { display: none; }
.practice-box {
  background: var(--card);
  border-radius: 24px;
  padding: 32px 48px;
  text-align: center;
  max-width: 560px;
}
.practice-word { font-size: 64px; font-weight: 700; margin: 0 0 12px; }

/* parent page */
table { width: 100%; border-collapse: collapse; font-size: 16px; text-align: left; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }
.parent h2 { text-align: left; }
.parent .card { margin-bottom: 24px; }

@media (max-width: 600px) {
  .reading { font-size: 24px; }
  .card { padding: 20px; }
  .practice-word { font-size: 44px; }
}