:root {
  --bg: #fdf8ef;
  --card: #ffffff;
  --ink: #1f2a44;
  --muted: #6b7280;
  --primary: #ff7a45;
  --primary-ink: #ffffff;
  --accent: #3b82f6;
  --window: #fff3b0;
  --window-border: #f5c518;
  --done: #22c55e;
  --line: #ece4d6;
  --radius: 18px;
  font-family: 'Andika', system-ui, sans-serif;
  color: var(--ink);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); min-height: 100vh; }
h1, h2, .brand, .btn { font-family: 'Fredoka', 'Andika', system-ui, sans-serif; }
h1 { font-size: 1.9rem; margin: 0.3em 0; }
h2 { font-size: 1.3rem; margin: 1.4em 0 0.6em; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.msg { min-height: 1.4em; color: #b45309; }
.center { text-align: center; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; max-width: 1100px; margin: 0 auto;
}
.brand { font-size: 1.4rem; font-weight: 600; }
.topbar-right { display: flex; gap: 12px; }

main { max-width: 1100px; margin: 0 auto; padding: 0 16px 48px; }

.card {
  background: var(--card); border-radius: var(--radius); padding: 24px;
  box-shadow: 0 2px 0 var(--line), 0 8px 24px rgba(31, 42, 68, 0.06);
}
.narrow { max-width: 520px; margin: 24px auto; }

label { display: block; font-weight: 700; margin: 16px 0 6px; }
input {
  width: 100%; font: inherit; font-size: 1.2rem; padding: 12px 14px;
  border: 2px solid var(--line); border-radius: 12px; background: #fff;
}
input:focus { outline: none; border-color: var(--accent); }
#code { letter-spacing: 0.4em; text-align: center; font-size: 1.6rem; }

.btn {
  display: inline-block; font-size: 1.1rem; font-weight: 600; border: 0; cursor: pointer;
  border-radius: 999px; padding: 12px 22px; margin-top: 16px;
  transition: transform 0.08s ease;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.6; cursor: wait; }
.btn.primary { background: var(--primary); color: var(--primary-ink); box-shadow: 0 4px 0 #d9541f; }
.btn.ghost { background: #fff; color: var(--ink); border: 2px solid var(--line); }
.btn.big { font-size: 1.35rem; padding: 14px 32px; }
.btn.huge { font-size: 1.7rem; padding: 18px 44px; margin: 0; }
.btn.round { width: 64px; height: 64px; padding: 0; font-size: 1.6rem; margin: 0; }
form .btn { width: 100%; }
.link { background: none; border: 0; color: var(--accent); font: inherit; cursor: pointer; padding: 8px; margin-top: 8px; }

.chip {
  font: inherit; font-size: 1.05rem; padding: 8px 14px; border-radius: 999px; cursor: pointer;
  border: 2px solid var(--line); background: #fff;
}
.chip.selected { border-color: var(--primary); background: #fff1ea; }
.avatar-chip { font-size: 1.6rem; padding: 4px 10px; }
.choice-row { display: flex; flex-wrap: wrap; gap: 8px; }

details summary { cursor: pointer; font-weight: 700; font-size: 1.15rem; }

/* welcome pitch for parents */
.pitch { max-width: 620px; margin: 16px auto 0; text-align: center; }
.pitch h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.15; margin: 0.2em 0 0.3em; text-wrap: balance; }
.pitch-sub { font-size: 1.15rem; color: var(--muted); margin: 0 auto 18px; max-width: 520px; text-wrap: balance; }
.demo-lane {
  display: flex; justify-content: center; align-items: center; gap: 18px; overflow: hidden;
  background: var(--card); border-radius: var(--radius); padding: 18px 12px; margin: 0 auto 18px;
  box-shadow: 0 2px 0 var(--line); font-size: clamp(1.4rem, 5vw, 2rem); white-space: nowrap;
}
.demo-read { color: #c3c9d4; }
.demo-window { background: var(--window); border: 3px dashed var(--window-border); border-radius: 12px; padding: 6px 16px; font-weight: 700; }
.demo-next { color: #8a94a6; }
.pitch-points { list-style: none; padding: 0; margin: 0 auto; text-align: left; max-width: 520px; display: grid; gap: 10px; }
.pitch-points li { display: flex; gap: 12px; align-items: flex-start; background: var(--card); border-radius: 14px; padding: 10px 14px; box-shadow: 0 1px 0 var(--line); }
.pitch-points li > span { font-size: 1.5rem; line-height: 1.2; }
.start-title { margin-top: 0; text-align: center; }

/* readers */
.reader-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 16px; margin: 16px 0; }
.reader-card {
  display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 20px 12px;
  background: var(--card); border: 3px solid transparent; border-radius: var(--radius); cursor: pointer; font: inherit;
  box-shadow: 0 2px 0 var(--line);
}
.reader-card:hover { border-color: var(--primary); }
.reader-card .avatar { font-size: 3rem; }
.reader-card .name { font-size: 1.3rem; font-weight: 700; }

/* lessons */
.profile-head { display: flex; align-items: center; gap: 16px; margin-top: 8px; }
.big-avatar { font-size: 3.5rem; background: #fff; border-radius: 50%; width: 84px; height: 84px; display: grid; place-items: center; box-shadow: 0 2px 0 var(--line); }
.stats { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.stat b { font-size: 1.3rem; color: var(--primary); }

.lesson-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.lesson-card {
  display: flex; flex-direction: column; gap: 4px; text-align: left; padding: 16px;
  background: var(--card); border: 3px solid transparent; border-radius: var(--radius); cursor: pointer; font: inherit;
  box-shadow: 0 2px 0 var(--line);
}
.lesson-card:hover { border-color: var(--accent); }
.grade-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin: 1.6em 0 0.7em; }
.grade-head h2 { margin: 0; }
.grade-badge { background: #fff1ea; color: #c2410c; border-radius: 999px; padding: 2px 10px; font-weight: 700; font-size: 0.95rem; }
.grade-count { margin-left: auto; }
.lesson-card.done { border-color: #bbf7d0; }
.lesson-emoji { font-size: 2.4rem; }
.lesson-title { font-weight: 700; font-size: 1.15rem; }
.lesson-best { margin-top: 4px; font-weight: 700; color: var(--accent); }

.recent { list-style: none; padding: 0; margin: 0; }
.recent li {
  display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center;
  background: var(--card); padding: 10px 14px; border-radius: 12px; margin-bottom: 6px;
}

/* prep */
.vocab { display: grid; gap: 10px; margin: 12px 0; text-align: left; }
.vocab-word {
  display: flex; flex-direction: column; gap: 2px; font: inherit; padding: 12px 14px; cursor: pointer;
  background: #f0f7ff; border: 2px solid #dbeafe; border-radius: 12px; text-align: left;
}
.vocab-word b { font-size: 1.3rem; }
.how { background: #fffbeb; border-radius: 12px; padding: 4px 14px; margin-top: 16px; text-align: left; }

/* reader */
body[data-screen="read"] .topbar { display: none; }
.read-head { display: flex; align-items: center; gap: 12px; padding-top: 16px; }
.read-title { flex: 1; font-weight: 700; font-size: 1.2rem; }
.wpm-box {
  display: flex; flex-direction: column; align-items: center; background: var(--card);
  border-radius: 14px; padding: 6px 16px; box-shadow: 0 2px 0 var(--line); line-height: 1.05;
}
.wpm-box span { font-family: 'Fredoka', sans-serif; font-size: 2rem; color: var(--primary); font-variant-numeric: tabular-nums; }
.wpm-box small { color: var(--muted); }
.read-head .btn { margin: 0; }

.progress { height: 10px; background: #efe6d6; border-radius: 99px; margin: 14px 0; overflow: hidden; }
#progress-bar { height: 100%; width: 0; background: var(--done); transition: width 0.3s ease; }

.lane {
  position: relative; height: clamp(160px, 32vh, 260px); overflow: hidden;
  background: var(--card); border-radius: var(--radius); box-shadow: 0 2px 0 var(--line);
  touch-action: manipulation; user-select: none; -webkit-user-select: none; cursor: pointer;
}
.window {
  position: absolute; left: 22%; width: 56%; top: 14%; bottom: 14%;
  background: var(--window); border: 3px dashed var(--window-border); border-radius: 16px;
}
.strip {
  position: absolute; top: 50%; left: 0; white-space: nowrap; will-change: transform;
  font-size: clamp(30px, 6.2vw, 64px); line-height: 1.2;
}
.chunk { display: inline-block; margin-right: 1.1em; color: #8a94a6; transition: color 0.2s ease; }
.chunk.current { color: var(--ink); font-weight: 700; }
.chunk.read { color: #d4d9e2; }
.countdown {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: 'Fredoka', sans-serif; font-size: 5rem; color: var(--primary);
  background: rgba(255, 255, 255, 0.85);
}

.read-actions { display: flex; justify-content: center; align-items: center; gap: 16px; margin-top: 20px; }
.idle {
  margin: 16px auto 0; max-width: 520px; text-align: center; padding: 10px 14px;
  background: #fff7ed; border: 2px solid #fdba74; border-radius: 12px; font-size: 1.1rem;
}

.card.center > .link { display: block; margin: 8px auto 0; }
.mode-row { justify-content: center; }
.mode-chip { font-size: 1.15rem; padding: 10px 18px; }
.privacy { font-size: 0.95rem; color: #166534; background: #f0fdf4; border-radius: 10px; padding: 8px 10px; }
.countdown.loading { font-size: 1.5rem; text-align: center; padding: 16px; }
.heard {
  margin: 14px auto 0; max-width: 640px; text-align: center; color: var(--muted);
  font-size: 1rem; background: #f3f4f6; border-radius: 10px; padding: 6px 12px;
}
.mic { display: flex; align-items: center; gap: 6px; font-size: 1.5rem; }
.mic-level { width: 44px; height: 10px; background: #e5e7eb; border-radius: 99px; overflow: hidden; }
#mic-level { display: block; height: 100%; width: 0; background: var(--done); transition: width 0.1s linear; }

/* done */
.result-wpm { display: flex; flex-direction: column; align-items: center; margin: 8px 0; }
.result-wpm span { font-family: 'Fredoka', sans-serif; font-size: 4rem; color: var(--primary); line-height: 1; }
.stars { font-size: 2.6rem; letter-spacing: 6px; margin: 8px 0; }
.reread { text-align: left; margin: 16px 0; background: #fffbeb; border-radius: 12px; padding: 12px 14px; }
.reread p { font-size: 1.3rem; line-height: 1.7; }

@media (max-width: 560px) {
  h1 { font-size: 1.5rem; }
  .btn.huge { font-size: 1.4rem; padding: 16px 30px; }
  .read-head { flex-wrap: wrap; }
  .read-title { font-size: 1.05rem; flex-basis: 100%; }
  .read-head .btn { margin-left: auto; }
  .window { left: 12%; width: 76%; }
  .recent li { grid-template-columns: 1fr auto; }
  .lesson-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .lesson-card { padding: 12px; }
  .lesson-card .lesson-emoji { font-size: 1.9rem; }
  .lesson-card .lesson-title { font-size: 1rem; line-height: 1.25; }
  .grade-head h2 { font-size: 1.15rem; }
  .recent li .muted { display: none; }
}