/* ---------- base ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #23324d;
  --muted: #7a869c;
  --accent: #4f6df5;
  --accent-dark: #3a54cc;
  --good: #2eb872;
  --bad: #e85c5c;
  --warn: #d9822b;
  --radius: 16px;
  --shadow: 0 2px 10px rgba(35, 50, 77, 0.08);
}
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
}
main { max-width: 860px; margin: 0 auto; padding: 16px 16px 60px; }
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 1.5rem; margin: 12px 0 16px; }
h2 { font-size: 1.15rem; margin: 4px 0 12px; }
h3 { font-size: 1rem; margin: 16px 0 8px; }
.muted { color: var(--muted); font-weight: normal; font-size: 0.9em; }
.error { background: #fdecec; color: var(--bad); padding: 10px 14px; border-radius: 10px; margin: 10px 0; }
.warn { color: var(--warn); }
.card-warn { font-size: 0.85rem; margin-top: 6px; }
.review-actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.ghost { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.revise-note { background: #fff2e2; color: var(--warn); border-radius: 10px; padding: 12px 14px; margin: 12px 0; }

/* ---------- content library filter bar ---------- */
.filterbar-card { position: sticky; top: 8px; z-index: 5; }
.content-filterbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.content-filterbar label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--muted); font-weight: 500; }
.content-filterbar select, .content-filterbar input { padding: 8px 10px; }
.content-filterbar .grow { flex: 1; min-width: 160px; }
.content-filterbar .grow input { width: 100%; }
.content-count { align-self: center; white-space: nowrap; }
.badge { display: inline-block; min-width: 1.4em; padding: 1px 8px; border-radius: 999px;
  background: #eef1f9; color: var(--muted); font-size: 0.8rem; font-weight: 600; vertical-align: middle; }
.revise-card { display: flex; align-items: center; gap: 12px; background: #fff2e2; color: var(--ink);
  border: 2px solid var(--warn); border-radius: var(--radius); padding: 14px 16px; margin: 10px 0; }
.revise-card .revise-body { flex: 1; }
.revise-card .task-go { color: var(--warn); font-weight: 700; }

/* ---------- printable worksheet ---------- */
.worksheet-controls .row-form { margin: 10px 0; }
.worksheet { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.ws-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-bottom: 8px; }
.ws-title { margin: 8px 0 14px; }
.ws-grid { columns: 2; column-gap: 40px; margin: 0 0 8px 22px; }
.ws-grid li { margin: 0 0 16px; break-inside: avoid; font-size: 1.05rem; }
.ws-q { white-space: nowrap; }
.ws-blank { display: inline-block; border-bottom: 1px solid #9aa3b5; min-width: 70px; }
.ws-key { border-top: 2px dashed #cfd6e4; margin-top: 20px; padding-top: 10px; }
@media print {
  .topnav, .noprint { display: none !important; }
  body { background: #fff; }
  main { max-width: 100%; margin: 0; padding: 0; }
  .worksheet { box-shadow: none; border-radius: 0; padding: 0; }
  .ws-key { page-break-before: always; border-top: none; }
  .ws-blank { min-width: 90px; }
}
.hidden { display: none !important; }
.inline { display: inline; }

/* ---------- nav ---------- */
.topnav {
  display: flex; align-items: center; gap: 18px;
  background: var(--card); box-shadow: var(--shadow);
  padding: 12px 20px; flex-wrap: wrap;
}
.topnav a { color: var(--ink); font-weight: 500; }
.topnav .brand { font-weight: 700; font-size: 1.1rem; margin-right: auto; }
.kidnav { font-size: 1.15rem; }
.linklike { background: none; border: none; color: var(--muted); cursor: pointer; font: inherit; }

/* ---------- cards / forms ---------- */
.card {
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px; margin-bottom: 18px;
}
.card.narrow { max-width: 420px; margin: 8vh auto; }
.stacked { display: flex; flex-direction: column; gap: 14px; margin-top: 10px; }
.stacked label { display: flex; flex-direction: column; gap: 6px; font-weight: 500; }
.row-form { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.row-form label { display: flex; flex-direction: column; gap: 4px; }
input, select, textarea {
  font: inherit; padding: 10px 12px; border: 1.5px solid #d7ddea;
  border-radius: 10px; background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
button {
  font: inherit; padding: 10px 18px; border: none; border-radius: 10px;
  background: #e8ecf7; color: var(--ink); cursor: pointer; font-weight: 600;
}
button:hover { filter: brightness(0.96); }
button:disabled { opacity: 0.4; cursor: default; }
button.primary, a.primary { background: var(--accent); color: #fff; display: inline-block; text-align: center; padding: 10px 18px; border-radius: 10px; font-weight: 600; }
button.primary:hover, a.primary:hover { background: var(--accent-dark); }
.primary.big { font-size: 1.25rem; padding: 16px 28px; width: 100%; margin-top: 14px; }
.primary.small { padding: 6px 12px; font-size: 0.9rem; }
.danger-link { background: none; color: var(--bad); padding: 4px 8px; }
.center-block { display: block; max-width: 420px; margin: 24px auto; }
.banner {
  display: block; background: #fff7e8; border: 1.5px solid #f0d8a8;
  padding: 14px 18px; border-radius: var(--radius); margin-bottom: 18px;
  color: var(--ink); font-weight: 600;
}

/* ---------- kid picker ---------- */
.picker { text-align: center; padding-top: 6vh; }
.avatar-grid { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin: 30px 0; }
.avatar-tile {
  width: 150px; height: 170px; border-radius: 24px; background: var(--card);
  box-shadow: var(--shadow); display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px;
}
.avatar-tile:hover { transform: translateY(-3px); }
.avatar-emoji { font-size: 4rem; }
.avatar-name { font-size: 1.2rem; font-weight: 700; }
.parent-link { margin-top: 30px; }
.modal {
  position: fixed; inset: 0; background: rgba(20, 28, 45, 0.55);
  display: flex; align-items: center; justify-content: center; z-index: 10;
}
.modal-card { background: var(--card); border-radius: 20px; padding: 26px; width: 320px; }
.pin-dots { display: flex; gap: 14px; justify-content: center; margin: 18px 0; }
.pin-dots span { width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--accent); }
.pin-dots span.filled { background: var(--accent); }
.pin-pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pin-pad button { font-size: 1.5rem; padding: 16px 0; border-radius: 14px; }

/* ---------- today ---------- */
.today-head { display: flex; align-items: center; justify-content: space-between; }
.streak { font-size: 1.2rem; font-weight: 700; background: #fff2e2; padding: 6px 14px; border-radius: 999px; }
.task-list { display: flex; flex-direction: column; gap: 14px; margin-top: 20px; }
.task-card {
  display: flex; align-items: center; gap: 16px; padding: 20px;
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  color: var(--ink); font-size: 1.2rem;
}
.task-card.todo:hover { transform: translateY(-2px); }
.task-card.done { opacity: 0.75; }
.task-icon { font-size: 2rem; }
.task-name { font-weight: 700; flex: 1; }
.task-go { color: var(--accent); font-weight: 700; }
.task-stars { color: #eeb200; font-size: 1.3rem; letter-spacing: 2px; }
.review-note { background: #eef7ef; border-radius: var(--radius); padding: 14px 18px; margin: 12px 0; }
.all-done { text-align: center; padding: 26px; background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); margin-top: 18px; }
.all-done-big { font-size: 4rem; }
.celebrate {
  position: fixed; top: 18%; left: 50%; transform: translateX(-50%);
  background: var(--card); box-shadow: 0 8px 30px rgba(0,0,0,0.18);
  font-size: 1.6rem; font-weight: 800; padding: 22px 34px; border-radius: 20px;
  z-index: 20; animation: pop 0.4s ease-out;
}
@keyframes pop { from { transform: translateX(-50%) scale(0.6); opacity: 0; } to { transform: translateX(-50%) scale(1); opacity: 1; } }

/* ---------- task players ---------- */
.player { max-width: 480px; margin: 0 auto; text-align: center; padding-top: 10px; }
.progress-line { height: 10px; background: #e3e8f4; border-radius: 999px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--good); border-radius: 999px; transition: width 0.3s; }
.progress-text { color: var(--muted); margin: 8px 0 4px; }
.problem { font-size: 2.6rem; font-weight: 800; margin: 24px 0; min-height: 60px; }
.answer-input {
  font-size: 2rem; text-align: center; width: 100%; max-width: 300px;
  border-width: 2px; margin-bottom: 14px;
}
.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; max-width: 320px; margin: 0 auto; }
.keypad button { font-size: 1.6rem; padding: 16px 0; border-radius: 14px; }
.feedback {
  font-size: 1.4rem; font-weight: 700; padding: 14px; border-radius: 14px; margin: 10px 0;
}
.feedback.good { background: #e7f7ee; color: var(--good); }
.feedback.bad { background: #fdecec; color: var(--bad); }
.quit { display: inline-block; margin-top: 26px; color: var(--muted); }
.mm-head { display: flex; align-items: center; justify-content: space-between; }
.mm-timer {
  font-size: 2.2rem; font-weight: 800; background: #fff2e2; color: var(--warn);
  border-radius: 999px; padding: 8px 22px; min-width: 90px;
}
.mm-timer.low { background: #fdecec; color: var(--bad); }

/* reading */
.passage { max-width: 640px; margin: 0 auto; }
.passage-body { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px; font-size: 1.15rem; line-height: 1.7; }
.passage-body p { margin-bottom: 1em; }
.passage-tools { text-align: right; margin-bottom: 8px; }
.font-btn { padding: 6px 14px; margin-left: 6px; }
.question-prompt { font-size: 1.3rem; font-weight: 700; margin: 22px 0; }
.choices { display: flex; flex-direction: column; gap: 12px; }
.choice {
  font-size: 1.1rem; text-align: left; padding: 16px 18px; border-radius: 14px;
  background: var(--card); box-shadow: var(--shadow); border: 2px solid transparent;
}
.choice:hover { border-color: var(--accent); }

/* spelling */
.speak-btn { font-size: 1.3rem; padding: 18px 26px; border-radius: 16px; background: var(--accent); color: #fff; margin: 18px 0 8px; }
.spell-sentence { color: var(--muted); font-size: 1.05rem; margin: 10px 0 16px; }
.spell-input { letter-spacing: 2px; }

/* writing */
.writing { max-width: 640px; margin: 0 auto; }
.writing-prompt { font-size: 1.15rem; background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; margin-bottom: 14px; }
.copywork-text { background: #fffbe8; border-left: 4px solid #eeb200; padding: 14px 18px; border-radius: 8px; font-size: 1.1rem; line-height: 1.6; margin-bottom: 14px; }
#writing-body { width: 100%; font-size: 1.1rem; line-height: 1.6; }
.writing-meta { display: flex; gap: 18px; margin: 8px 2px; color: var(--muted); }

/* summary */
.summary { max-width: 520px; margin: 0 auto; text-align: center; }
.summary-score { font-size: 1.4rem; font-weight: 700; margin: 10px 0 20px; }
.miss-list { text-align: left; background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 18px 18px 38px; }
.miss-list li { margin: 8px 0; }
.miss-q { font-weight: 600; }

/* ---------- parent ---------- */
.kid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.kid-card-head { display: flex; align-items: center; gap: 10px; }
.kid-card-head h2 { flex: 1; margin: 0; }
.kid-avatar { font-size: 2rem; }
.today-progress { margin: 10px 0; }
.mini-stats { width: 100%; border-collapse: collapse; }
.mini-stats td { padding: 5px 6px; }
.bar-cell { width: 40%; }
.bar { height: 10px; background: var(--accent); border-radius: 999px; min-width: 2px; }
.card-links { margin: 8px 0 14px; }
.days-table { width: 100%; border-collapse: collapse; }
.days-table td, .days-table th { padding: 8px 6px; border-bottom: 1px solid #edf0f7; text-align: left; }
.levels-table { width: 100%; border-collapse: collapse; }
.levels-table td { padding: 10px 6px; border-bottom: 1px solid #edf0f7; }
.level-actions form { margin-right: 6px; }
.weak-list { padding-left: 22px; }
.weak-list li { margin: 6px 0; }
.submission-body { font-size: 1.05rem; line-height: 1.7; }
.submission-body p { margin-bottom: 0.6em; }
.ai-feedback { background: #f0f4ff; border-radius: 10px; padding: 14px; line-height: 1.6; }
.rubric { display: flex; flex-direction: column; gap: 10px; }
.rubric-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-weight: 500; }
.question-list { padding-left: 22px; }
.question-list > li { margin-bottom: 14px; }
.question-list ul { padding-left: 20px; color: var(--muted); }
.correct-choice { color: var(--good); font-weight: 600; }
.filter-row a { margin-right: 8px; padding: 4px 10px; border-radius: 8px; }
.active-filter { background: var(--accent); color: #fff; }
.kid-edit-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; }
.checkline { display: flex; align-items: center; gap: 6px; flex-direction: row !important; font-weight: 500; }

/* ---------- responsive ---------- */
@media (max-width: 560px) {
  .problem { font-size: 2.1rem; }
  .avatar-tile { width: 130px; height: 150px; }
  .topnav { gap: 12px; padding: 10px 14px; }
  main { padding: 12px 10px 60px; }
  .rubric-row { flex-direction: column; align-items: flex-start; }
}