/* Céim: bright, calm, easy to read for children */
:root {
  --bg: #FFF9F0; --ink: #1F2A44; --muted: #5B6476; --line: #E8DCCB; --card: #FFFFFF;
  --brand: #2B4C7E; --ok: #2E9E5B; --ok-bg: #E3F6EA; --no: #D9534F; --no-bg: #FDECEB; --star: #F5B700;
  --head: "Fredoka", "Nunito", system-ui, sans-serif; --body: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.5 var(--body);
  background-image: radial-gradient(circle at 12px 12px, #F3E6D3 1.6px, transparent 1.7px); background-size: 28px 28px; }
a { color: var(--brand); }
button { font: inherit; cursor: pointer; }
h1, h2, h3 { font-family: var(--head); line-height: 1.15; margin: 0; }
main { max-width: 1140px; margin: 0 auto; padding: 0 20px 40px; outline: none; }

/* header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; max-width: 1140px; margin: 0 auto;
  padding: 14px 20px; padding-top: calc(14px + env(safe-area-inset-top, 0px)); flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.logo svg { width: 44px; height: 37px; }
.logo span { font: 700 32px var(--head); letter-spacing: .5px; }
.topnav { display: flex; gap: 6px; flex-wrap: wrap; }
.topnav a { text-decoration: none; font-weight: 700; color: var(--ink); padding: 8px 14px; border-radius: 999px; }
.topnav a:hover, .topnav a.on { background: #fff; box-shadow: 0 1px 0 var(--line), 0 2px 8px rgba(31, 42, 68, .06); }

/* home */
.hero { text-align: center; padding: 18px 0 26px; }
.hero h1 { font-size: clamp(30px, 5vw, 48px); }
.hero .hl { color: #fff; background: #3FA34D; padding: 0 12px; border-radius: 12px; display: inline-block; transform: rotate(-2deg); }
.hero p { max-width: 640px; margin: 12px auto 0; color: var(--muted); font-size: 18px; }
.hero .earned { color: var(--ink); background: #FFF1C2; display: inline-block; padding: 6px 16px; border-radius: 999px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }
.card { background: var(--card); border-radius: 20px; border: 2px solid var(--line); border-top: 8px solid var(--c);
  padding: 18px 20px 12px; box-shadow: 0 6px 18px rgba(31, 42, 68, .06); display: flex; flex-direction: column; }
.card-head { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--c); }
.card-head h2 { font-size: 27px; }
.badge { flex-shrink: 0; display: inline-grid; place-items: center; min-width: 42px; height: 42px; padding: 0 8px; border-radius: 14px;
  background: var(--c); color: #fff; font: 700 18px var(--head); }
.topics { color: var(--muted); margin: 10px 0 8px; font-size: 15.5px; flex: 1; }
.rows { border-top: 1px dashed var(--line); }
.row { display: flex; align-items: center; gap: 8px; padding: 9px 2px; text-decoration: none; color: var(--ink); font-weight: 700; border-bottom: 1px dashed var(--line); }
.row:last-child { border-bottom: 0; }
.row .count { margin-left: auto; color: var(--c); font-weight: 800; font-size: 15px; }
.row .mini { color: var(--star); font-size: 14px; font-weight: 800; }
.row:hover .count { text-decoration: underline; }

/* class page */
.class-head { padding: 6px 0 16px; }
.class-head h1 { display: flex; align-items: center; gap: 14px; font-size: clamp(30px, 5vw, 42px); color: var(--c); margin-top: 6px; }
.back { text-decoration: none; font-weight: 800; color: var(--muted); }
.back:hover { color: var(--ink); }
.subjects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.subject { background: var(--card); border: 2px solid var(--line); border-radius: 20px; padding: 16px 16px 8px; }
.subject.focus { border-color: var(--brand); box-shadow: 0 0 0 4px rgba(43, 76, 126, .12); }
.subject h2 { font-size: 24px; margin-bottom: 8px; }
.subject h2 small { font: 600 15px var(--body); color: var(--muted); }
.skills { list-style: none; margin: 0; padding: 0; }
.skills a { display: flex; align-items: center; gap: 10px; padding: 11px 6px; text-decoration: none; color: var(--ink); border-top: 1px solid #F1E8DA; border-radius: 10px; }
.skills a:hover { background: #FFF6E6; }
.code { flex-shrink: 0; font: 700 13px var(--head); color: #fff; background: var(--brand); padding: 3px 8px; border-radius: 8px; }
.skills .t { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.skills .t b { font-weight: 800; }
.skills .t small { color: var(--muted); font-size: 14px; }
.stars { color: var(--star); letter-spacing: 1px; white-space: nowrap; font-size: 17px; }
.stars .off { color: #E3D9C9; }

/* practice */
.practice { max-width: 760px; margin: 0 auto; }
.p-top { padding: 4px 0 14px; }
.p-title { font: 600 22px var(--head); margin: 6px 0 10px; display: flex; align-items: center; gap: 8px; }
.p-title .code { background: var(--c); }
.p-meter { height: 12px; background: #F1E6D4; border-radius: 999px; overflow: hidden; }
.p-meter span { display: block; height: 100%; background: var(--c); border-radius: 999px; transition: width .3s; }
.p-count { color: var(--muted); font-weight: 700; font-size: 15px; margin-top: 6px; }
.qcard { background: var(--card); border: 2px solid var(--line); border-radius: 24px; padding: 26px 24px 22px; box-shadow: 0 8px 24px rgba(31, 42, 68, .07); }
.prompt { font: 600 clamp(22px, 3.6vw, 29px)/1.35 var(--head); display: flex; gap: 12px; align-items: flex-start; justify-content: space-between; }
.prompt small { font: 600 16px var(--body); color: var(--muted); }
.say { flex-shrink: 0; border: 0; background: #EAF2FB; border-radius: 14px; font-size: 24px; width: 50px; height: 50px; }
.say:hover { background: #D6E6F7; }
.blank { display: inline-block; min-width: 70px; border-bottom: 3px solid var(--c); color: transparent; }
.ga { color: #1B7F4C; }
.visual { margin: 16px 0 6px; text-align: center; }
.objs { font-size: clamp(30px, 6vw, 42px); line-height: 1.25; letter-spacing: 4px; word-break: break-all; }
.objs.line { letter-spacing: 10px; }
.groups { display: flex; gap: 18px; justify-content: center; align-items: center; flex-wrap: wrap; }
.groups > div:not(.op) { background: #FFF8EC; border: 2px dashed var(--line); border-radius: 16px; padding: 8px 14px; min-width: 120px; }
.groups b { display: block; font: 700 20px var(--head); color: var(--muted); }
.groups .op { font: 700 36px var(--head); }
.big-emoji { font-size: 76px; line-height: 1.1; }
.word-hint { font: 700 34px var(--head); letter-spacing: 6px; color: var(--muted); }
.clock { width: 170px; height: 170px; }
.shape { width: 150px; height: 150px; }
.rect { width: 260px; max-width: 100%; }
.coins { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.coin { display: inline-grid; place-items: center; width: 64px; height: 64px; border-radius: 50%; font: 700 17px var(--head);
  background: radial-gradient(circle at 35% 30%, #F7D58B, #C99A2E); color: #4A3500; box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .15); }
.coin.c1, .coin.c2, .coin.c5 { background: radial-gradient(circle at 35% 30%, #F0B08A, #B5643A); color: #3B1A08; width: 54px; height: 54px; }

.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.choices.short { grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); }
.choice { border: 2px solid var(--line); background: #FFFDF8; border-radius: 16px; padding: 16px 14px; font: 600 21px var(--head); color: var(--ink);
  min-height: 64px; transition: transform .08s, border-color .1s; }
.choice:hover:not(:disabled) { border-color: var(--c); transform: translateY(-1px); }
.choice.right { background: var(--ok-bg); border-color: var(--ok); }
.choice.wrong { background: var(--no-bg); border-color: var(--no); }
.choice:disabled { cursor: default; }
.numform { display: flex; gap: 10px; margin-top: 20px; justify-content: center; }
.numin { width: 180px; font: 700 30px var(--head); text-align: center; border: 3px solid var(--line); border-radius: 16px; padding: 10px; color: var(--ink); background: #fff; }
.numin:focus { outline: 0; border-color: var(--c); }
.numin.right { border-color: var(--ok); background: var(--ok-bg); }
.numin.wrong { border-color: var(--no); background: var(--no-bg); }
.check, .minus { border: 0; border-radius: 16px; background: var(--c); color: #fff; font: 700 22px var(--head); padding: 0 26px; }
.minus { background: #EAE0D0; color: var(--ink); padding: 0 18px; font-size: 28px; }
.feedback { margin-top: 18px; }
.fb { border-radius: 16px; padding: 14px 16px; }
.fb b { font: 700 24px var(--head); }
.fb span { color: var(--muted); font-weight: 700; margin-left: 6px; }
.fb p { margin: 6px 0 0; }
.fb.ok { background: var(--ok-bg); } .fb.ok b { color: var(--ok); }
.fb.no { background: var(--no-bg); } .fb.no > b { color: var(--no); }
.nextbtn { margin-top: 14px; width: 100%; border: 0; border-radius: 16px; padding: 15px; background: var(--ink); color: #fff; font: 700 21px var(--head); }
.nextbtn:hover { filter: brightness(1.15); }

/* results */
.result { text-align: center; padding: 34px 24px; margin-top: 20px; }
.bigstars .stars { font-size: 64px; letter-spacing: 6px; }
.result h1 { font-size: 40px; margin-top: 4px; }
.msg { font-size: 19px; color: var(--muted); }
.best { display: inline-block; background: #FFF1C2; padding: 4px 14px; border-radius: 999px; font-weight: 800; }
.actions { display: flex; flex-direction: column; gap: 10px; max-width: 420px; margin: 18px auto 0; }
.btn { display: block; text-decoration: none; text-align: center; border: 2px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 16px; padding: 13px 16px; font: 700 18px var(--head); }
.btn.primary { background: var(--c, var(--brand)); border-color: transparent; color: #fff; }
.btn.ghost { background: transparent; }

/* progress + about */
.page { max-width: 760px; margin: 0 auto; }
.page h1 { font-size: 38px; margin: 6px 0 8px; }
.page h2 { font-size: 24px; margin: 22px 0 6px; }
.prose p, .prose li { color: #2F3A55; }
.progs { display: flex; flex-direction: column; gap: 10px; margin: 16px 0; }
.prog { display: flex; align-items: center; gap: 12px; background: #fff; border: 2px solid var(--line); border-radius: 16px; padding: 10px 14px; text-decoration: none; color: var(--ink); }
.prog .t { display: flex; flex-direction: column; min-width: 150px; }
.prog small { color: var(--muted); }
.prog .bar { flex: 1; height: 12px; background: #F1E6D4; border-radius: 999px; overflow: hidden; }
.prog .bar span { display: block; height: 100%; background: var(--c); }
.prog .n { color: var(--star); font-weight: 800; min-width: 54px; text-align: right; }

.foot { max-width: 1140px; margin: 10px auto 0; padding: 18px 20px 30px; color: var(--muted); font-size: 14.5px; text-align: center; border-top: 2px dashed var(--line); }

@media (max-width: 900px) { .subjects { grid-template-columns: 1fr; } }
@media (max-width: 560px) {
  body { font-size: 16px; }
  .logo span { font-size: 26px; }
  .topnav a { padding: 6px 10px; font-size: 15px; }
  .qcard { padding: 20px 16px 18px; border-radius: 20px; }
  .choices { grid-template-columns: 1fr; }
  .choices.short { grid-template-columns: repeat(2, 1fr); }
  .prog .t { min-width: 0; }
  .prog .bar { display: none; }
}

.ptext { flex: 1; min-width: 0; }
.blank { min-width: 64px; margin: 0 2px; }
@media (max-width: 560px) {
  .groups { flex-wrap: nowrap; gap: 8px; }
  .groups > div:not(.op) { min-width: 0; padding: 6px 8px; }
  .groups .objs { font-size: 26px; letter-spacing: 1px; }
  .groups .op { font-size: 28px; }
}