@import url("https://fonts.googleapis.com/css2?family=Baloo+2:wght@600;700;800&family=Noto+Sans+SC:wght@400;500;600;700;800;900&display=swap");

:root {
  --cream: #fff8e9;
  --cream-deep: #f6edda;
  --ink: #2d2a3d;
  --muted: #746f7e;
  --purple: #6251a7;
  --purple-dark: #4b3b8f;
  --purple-soft: #eee9ff;
  --yellow: #ffcf5a;
  --yellow-soft: #fff0b7;
  --coral: #ff806b;
  --coral-soft: #ffe2dc;
  --green: #59b893;
  --green-soft: #dff6ec;
  --blue: #65aedd;
  --white: #fffdf8;
  --line: #e8dfce;
  --shadow: 0 14px 35px rgba(67, 54, 109, 0.09);
  --shadow-small: 0 6px 18px rgba(67, 54, 109, 0.08);
  font-family: "Noto Sans SC", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--cream);
}

* { box-sizing: border-box; }

html { min-height: 100%; background: var(--cream); }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 8% 15%, rgba(255, 207, 90, 0.18) 0 4px, transparent 5px),
    radial-gradient(circle at 92% 30%, rgba(98, 81, 167, 0.12) 0 5px, transparent 6px),
    linear-gradient(180deg, #fffaf0 0%, var(--cream) 58%, #fffaf1 100%);
}

button, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
button:focus-visible, input:focus-visible { outline: 4px solid rgba(101, 174, 221, 0.38); outline-offset: 2px; }

.app-shell { width: min(1180px, 100%); min-height: 100vh; margin: 0 auto; padding: 0 28px 42px; }
.topbar { height: 84px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 11px; border: 0; background: transparent; color: var(--ink); font-weight: 900; font-size: 20px; cursor: pointer; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 14px; color: var(--purple-dark); background: var(--yellow); box-shadow: 0 5px 0 #e7b939; transform: rotate(-5deg); }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.icon-button, .parent-button { height: 42px; border: 1px solid var(--line); background: rgba(255,255,255,.68); color: var(--ink); cursor: pointer; box-shadow: var(--shadow-small); }
.icon-button { width: 42px; border-radius: 50%; font-size: 18px; }
.icon-button.is-muted { color: #aaa1a9; text-decoration: line-through; }
.parent-button { border-radius: 15px; padding: 0 16px; font-size: 14px; font-weight: 700; }

.eyebrow { color: var(--purple); font-size: 13px; font-weight: 900; letter-spacing: .08em; }
.home-hero { display: grid; grid-template-columns: 1.25fr .75fr; gap: 28px; padding: 32px 0 24px; align-items: center; }
.home-copy h1 { margin: 8px 0 10px; font-family: "Baloo 2", "Noto Sans SC", sans-serif; font-size: clamp(40px, 5.2vw, 68px); line-height: .98; letter-spacing: -.035em; }
.home-copy h1 em { color: var(--coral); font-style: normal; position: relative; }
.home-copy p { max-width: 570px; margin: 0; color: var(--muted); line-height: 1.85; font-size: 16px; }

.planet-scene { height: 230px; position: relative; display: grid; place-items: center; }
.orbit { width: 215px; height: 215px; border: 2px dashed rgba(98,81,167,.22); border-radius: 50%; display: grid; place-items: center; animation: spin 24s linear infinite; }
.planet { width: 150px; height: 150px; border-radius: 50%; position: relative; background: linear-gradient(145deg, #7666c4, #4d3c91); box-shadow: inset -18px -14px 0 rgba(41,29,91,.16), 0 22px 40px rgba(76,59,145,.22); transform: rotate(-12deg); }
.planet::before { content: ""; position: absolute; left: -34px; top: 58px; width: 215px; height: 40px; border: 12px solid var(--yellow); border-radius: 50%; transform: rotate(10deg); clip-path: polygon(0 0, 100% 0, 100% 50%, 0 80%); }
.planet::after { content: "✦"; position: absolute; color: var(--yellow-soft); font-size: 28px; left: 62px; top: 36px; transform: rotate(12deg); }
.moon { position: absolute; width: 42px; height: 42px; border-radius: 50%; background: var(--coral); box-shadow: 0 8px 18px rgba(255,128,107,.25); transform: translate(94px, -80px); }
.spark { position: absolute; color: var(--yellow); font-size: 24px; animation: float 3.5s ease-in-out infinite; }
.spark.s1 { left: 12%; top: 22%; }.spark.s2 { right: 9%; bottom: 20%; animation-delay: -1.2s; }.spark.s3 { left: 22%; bottom: 12%; color: var(--coral); animation-delay: -2s; }

.dashboard-grid { display: grid; grid-template-columns: 1.65fr 1fr; gap: 24px; }
.card { background: rgba(255,253,248,.92); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.mission-card { padding: 28px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 16px; margin-bottom: 22px; }
.section-heading h2 { margin: 0; font-size: 23px; }
.section-heading p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.level-pill { display: flex; align-items: center; gap: 8px; border: 0; border-radius: 14px; padding: 9px 12px; background: var(--purple-soft); color: var(--purple-dark); font-size: 12px; font-weight: 800; cursor: pointer; }

.mission-main { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 20px; padding: 21px; border-radius: 22px; background: linear-gradient(130deg, var(--purple) 0%, #7868bd 100%); color: white; overflow: hidden; position: relative; }
.mission-main::after { content: "✦"; position: absolute; font-size: 130px; color: rgba(255,255,255,.06); right: 42px; top: -46px; transform: rotate(18deg); }
.mission-label { font-size: 12px; color: #ddd6ff; font-weight: 800; }
.mission-main h3 { margin: 5px 0 6px; font-size: 24px; }
.mission-main p { margin: 0; color: #e6e0ff; font-size: 13px; }
.primary-button { min-height: 52px; padding: 0 23px; border: 0; border-radius: 17px; background: var(--yellow); color: #403359; font-weight: 900; cursor: pointer; box-shadow: 0 6px 0 #d9aF35; transition: transform .15s, box-shadow .15s; position: relative; z-index: 1; }
.primary-button:hover { transform: translateY(-2px); box-shadow: 0 8px 0 #d9af35; }
.primary-button:active { transform: translateY(4px); box-shadow: 0 2px 0 #d9af35; }

.mini-missions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 14px; }
.mini-mission { border: 1px solid var(--line); border-radius: 19px; background: #fffefa; padding: 16px; display: flex; align-items: center; gap: 12px; cursor: pointer; text-align: left; color: var(--ink); transition: transform .18s, border-color .18s; }
.mini-mission:hover { transform: translateY(-2px); border-color: #cfc1ea; }
.mini-mission:disabled { opacity: .58; cursor: not-allowed; transform: none; }
.mini-icon { width: 42px; height: 42px; border-radius: 14px; display: grid; place-items: center; font-size: 20px; flex: none; }
.mini-icon.warm { background: var(--coral-soft); }.mini-icon.review { background: var(--green-soft); }.mini-icon.speed { background: var(--yellow-soft); }
.mini-mission strong { display: block; font-size: 14px; }.mini-mission small { color: var(--muted); font-size: 11px; }

.progress-card { padding: 25px; }
.streak-row { display: flex; align-items: center; gap: 13px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.streak-flame { width: 53px; height: 53px; border-radius: 18px; display: grid; place-items: center; background: var(--coral-soft); font-size: 25px; }
.streak-row strong { display: block; font-size: 25px; line-height: 1; }.streak-row span { color: var(--muted); font-size: 12px; }
.week-row { display: flex; justify-content: space-between; gap: 5px; margin-top: 21px; }
.day { display: grid; gap: 7px; justify-items: center; color: #9d97a1; font-size: 10px; }
.day-dot { width: 27px; height: 27px; border: 1px solid var(--line); border-radius: 50%; display: grid; place-items: center; background: #fff; font-size: 11px; }
.day.done .day-dot { color: #fff; border-color: var(--green); background: var(--green); }
.day.today .day-dot { border: 3px solid var(--yellow); color: var(--purple); font-weight: 900; }
.daily-progress { margin-top: 23px; }
.progress-label { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 12px; font-weight: 700; }
.progress-label span:last-child { color: var(--purple); }
.progress-track { height: 11px; border-radius: 99px; background: #eee9df; overflow: hidden; }
.progress-fill { height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--yellow), var(--coral)); transition: width .5s ease; }
.motto { margin: 17px 0 0; text-align: center; color: var(--purple); font-weight: 800; font-size: 13px; }

/* Game */
.game-layout { max-width: 760px; margin: 12px auto 0; }
.game-header { display: grid; grid-template-columns: auto 1fr auto; gap: 18px; align-items: center; margin-bottom: 24px; }
.back-button { width: 44px; height: 44px; border: 1px solid var(--line); background: var(--white); border-radius: 15px; color: var(--ink); cursor: pointer; box-shadow: var(--shadow-small); }
.game-progress-wrap { display: flex; align-items: center; gap: 12px; }
.game-progress-wrap .progress-track { flex: 1; height: 12px; }
.question-count, .score-chip { font-size: 13px; font-weight: 900; white-space: nowrap; }
.score-chip { background: var(--yellow-soft); color: #725820; padding: 9px 12px; border-radius: 13px; }
.timer { grid-column: 2; display: none; height: 5px; border-radius: 9px; background: #eee7d9; overflow: hidden; }
.timer.visible { display: block; }.timer-fill { height: 100%; background: var(--coral); transition: width .1s linear; }

.question-card { min-height: 520px; padding: 32px; display: flex; flex-direction: column; align-items: center; position: relative; overflow: hidden; }
.question-card::before, .question-card::after { content: "✦"; position: absolute; color: rgba(98,81,167,.07); font-size: 82px; }
.question-card::before { left: 20px; top: 60px; transform: rotate(-16deg); }.question-card::after { right: 24px; bottom: 50px; transform: rotate(20deg); }
.question-card.batch-card { align-items: stretch; }
.question-type { display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border-radius: 99px; background: var(--purple-soft); color: var(--purple); font-size: 11px; font-weight: 900; position: relative; z-index: 1; }
.equation { margin: 42px 0 26px; display: flex; align-items: center; gap: clamp(14px, 4vw, 32px); font-family: "Baloo 2", sans-serif; font-weight: 800; font-size: clamp(52px, 10vw, 82px); line-height: 1; letter-spacing: -.03em; position: relative; z-index: 1; }
.operator { color: var(--coral); }.equals { color: #a9a2ad; }
.answer-display { min-width: 110px; height: 86px; padding: 0 15px; display: grid; place-items: center; border: 3px solid #ddd3ca; border-radius: 22px; background: #fffefa; color: var(--purple); }
.answer-display.empty::after { content: "?"; color: #d3cbd0; }
.helper-text { color: var(--muted); font-size: 13px; margin-bottom: 18px; position: relative; z-index: 1; }
.numpad { width: min(360px, 100%); display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; position: relative; z-index: 1; }
.num-key { min-height: 58px; border: 1px solid var(--line); border-radius: 17px; background: #fffdfa; color: var(--ink); font-family: "Baloo 2", sans-serif; font-size: 25px; font-weight: 800; cursor: pointer; box-shadow: 0 4px 0 #e8dfd3; }
.num-key:active { transform: translateY(3px); box-shadow: 0 1px 0 #e8dfd3; }
.num-key.erase { color: var(--coral); font-family: inherit; font-size: 17px; }.num-key.check-key { background: var(--purple); color: white; border-color: var(--purple); box-shadow: 0 4px 0 var(--purple-dark); font-family: inherit; font-size: 15px; }
.num-key:disabled { opacity: .42; cursor: not-allowed; }

.check-panel { width: min(510px, 100%); margin-top: 10px; position: relative; z-index: 2; }
.check-title { text-align: center; }.check-title .check-icon { width: 58px; height: 58px; margin: 0 auto 12px; border-radius: 20px; display: grid; place-items: center; background: var(--yellow-soft); font-size: 29px; }
.check-title h2 { margin: 0 0 6px; font-size: 22px; }.check-title p { margin: 0; color: var(--muted); font-size: 13px; }
.check-answer { margin: 22px 0 15px; padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; border: 2px solid #ded4f4; border-radius: 18px; background: #faf8ff; }
.check-answer span { color: var(--muted); font-size: 13px; }.check-answer strong { color: var(--purple); font-size: 27px; }
.check-list { display: grid; gap: 8px; }
.check-item { padding: 12px 14px; border-radius: 14px; background: #f8f5ef; display: flex; gap: 10px; align-items: center; font-size: 13px; font-weight: 700; }
.check-item i { width: 23px; height: 23px; border-radius: 8px; display: grid; place-items: center; background: var(--white); color: var(--green); font-style: normal; }
.check-actions { display: grid; grid-template-columns: 1fr 1.35fr; gap: 10px; margin-top: 18px; }
.secondary-button { min-height: 52px; border: 1px solid var(--line); border-radius: 17px; background: white; color: var(--ink); font-weight: 800; cursor: pointer; }

.result-panel { display: grid; justify-items: center; text-align: center; width: 100%; position: relative; z-index: 2; }
.result-illustration { width: 102px; height: 102px; border-radius: 35px; display: grid; place-items: center; font-size: 50px; transform: rotate(-4deg); }
.result-illustration.correct { background: var(--green-soft); }.result-illustration.wrong { background: var(--coral-soft); }
.result-panel h2 { margin: 18px 0 7px; font-size: 28px; }.result-panel p { margin: 0; color: var(--muted); }
.points-earned { margin: 17px 0 22px; padding: 7px 13px; border-radius: 99px; background: var(--yellow-soft); color: #725820; font-weight: 900; font-size: 13px; }
.answer-explain { width: min(430px, 100%); margin-bottom: 22px; padding: 15px; background: #f8f5ef; border-radius: 17px; font-size: 14px; }
.result-panel .primary-button { min-width: 190px; }

/* Batch review */
.batch-review, .batch-result { width: min(610px, 100%); margin: 0 auto; position: relative; z-index: 2; }
.batch-checklist { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 18px 0; }
.batch-checklist span { padding: 7px 10px; border-radius: 99px; background: var(--yellow-soft); color: #725820; font-size: 11px; font-weight: 800; }
.review-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
.review-row { min-height: 60px; padding: 9px 11px; display: grid; grid-template-columns: 28px 1fr 70px; gap: 8px; align-items: center; border: 1px solid var(--line); border-radius: 15px; background: #fffefa; }
.review-number { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 9px; background: var(--purple-soft); color: var(--purple); font-size: 11px; font-weight: 900; }
.review-equation { font-family: "Baloo 2", "Noto Sans SC", sans-serif; font-size: 19px; font-weight: 800; white-space: nowrap; }
.review-input { width: 68px; height: 40px; border: 2px solid #dcd2ed; border-radius: 11px; background: white; color: var(--purple); text-align: center; font-size: 19px; font-weight: 900; }
.review-submit { width: min(360px, 100%); display: block; margin: 20px auto 0; }
.batch-result { display: grid; justify-items: center; text-align: center; }
.batch-result h2 { margin: 16px 0 6px; }.batch-result > p { margin: 0; color: var(--muted); font-size: 13px; }
.batch-result-list { width: 100%; display: grid; grid-template-columns: repeat(2, 1fr); gap: 7px; margin: 19px 0; }
.batch-result-row { display: flex; justify-content: space-between; gap: 8px; padding: 10px 12px; border-radius: 12px; font-size: 12px; font-weight: 800; }
.batch-result-row.is-correct { background: var(--green-soft); color: #347f65; }.batch-result-row.is-wrong { background: var(--coral-soft); color: #a44f42; }

/* Completion */
.complete-card { max-width: 700px; margin: 24px auto; padding: 42px; text-align: center; }
.badge-big { width: 120px; height: 120px; margin: 0 auto 18px; border-radius: 42px; background: linear-gradient(145deg, var(--yellow), #ffb94d); display: grid; place-items: center; font-size: 58px; box-shadow: 0 11px 0 #e4a93d; animation: pop .55s cubic-bezier(.2,1.5,.5,1); }
.complete-card h1 { margin: 23px 0 8px; font-size: 35px; }.complete-card > p { margin: 0; color: var(--muted); }
.summary-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 27px 0; }
.summary-stat { padding: 17px 8px; background: #f8f5ef; border-radius: 17px; }.summary-stat strong { display: block; font-size: 24px; }.summary-stat span { color: var(--muted); font-size: 11px; }
.badge-note { margin: 0 auto 26px; padding: 15px; border-radius: 17px; background: var(--purple-soft); color: var(--purple-dark); font-size: 13px; font-weight: 700; }

/* Parent */
.parent-page { max-width: 1000px; margin: 18px auto 0; }
.page-title { display: flex; align-items: center; gap: 16px; margin-bottom: 26px; }.page-title h1 { margin: 0 0 5px; font-size: 30px; }.page-title p { margin: 0; color: var(--muted); font-size: 13px; }
.stat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 13px; }
.stat-card { padding: 20px; }.stat-card .stat-icon { font-size: 20px; }.stat-card strong { display: block; margin: 12px 0 3px; font-size: 26px; }.stat-card span { color: var(--muted); font-size: 11px; }
.parent-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; margin-top: 18px; }
.analytics-card { padding: 24px; }.analytics-card h2 { font-size: 17px; margin: 0 0 4px; }.analytics-card > p { margin: 0; color: var(--muted); font-size: 11px; }
.chart { height: 190px; display: flex; align-items: end; gap: 12px; margin-top: 26px; border-bottom: 1px solid var(--line); padding: 0 8px; }
.bar-wrap { flex: 1; height: 100%; display: flex; flex-direction: column; justify-content: end; align-items: center; gap: 7px; }.bar { width: min(29px, 70%); min-height: 3px; border-radius: 8px 8px 0 0; background: var(--purple); transition: height .5s; }.bar-wrap span { font-size: 10px; color: var(--muted); transform: translateY(19px); }
.insight-list { display: grid; gap: 11px; margin-top: 20px; }.insight { display: flex; gap: 11px; align-items: flex-start; padding: 12px; border-radius: 15px; background: #f8f5ef; }.insight i { font-style: normal; }.insight strong { display: block; font-size: 12px; }.insight span { color: var(--muted); font-size: 10px; line-height: 1.6; }
.danger-button { width: 100%; margin-top: 14px; padding: 11px; border-radius: 13px; border: 1px solid #f0c8c1; color: #b85e51; background: #fff7f5; font-size: 11px; cursor: pointer; }

/* Modal */
.modal-backdrop { position: fixed; inset: 0; z-index: 20; padding: 22px; display: grid; place-items: center; background: rgba(45,42,61,.32); backdrop-filter: blur(6px); }
.modal { width: min(680px, 100%); max-height: min(720px, 90vh); overflow: auto; padding: 25px; background: var(--cream); border-radius: 28px; box-shadow: 0 24px 70px rgba(45,42,61,.24); }
.modal-header { position: sticky; top: -25px; z-index: 2; margin: -25px -25px 15px; padding: 22px 25px 14px; display: flex; align-items: center; justify-content: space-between; background: var(--cream); }.modal-header h2 { margin: 0; }.close-button { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; background: white; cursor: pointer; }
.level-list { display: grid; gap: 8px; }.level-option { width: 100%; display: grid; grid-template-columns: 40px 1fr auto; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--line); border-radius: 16px; background: white; color: var(--ink); text-align: left; cursor: pointer; }.level-option.selected { border: 2px solid var(--purple); background: var(--purple-soft); }.level-number { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; background: var(--yellow-soft); font-weight: 900; }.level-option strong { display: block; font-size: 13px; }.level-option small { color: var(--muted); font-size: 10px; }.level-option .difficulty { color: var(--purple); font-size: 10px; font-weight: 800; }

.toast { position: fixed; z-index: 50; left: 50%; bottom: max(28px, env(safe-area-inset-bottom)); transform: translate(-50%, 20px); opacity: 0; pointer-events: none; padding: 12px 18px; border-radius: 14px; background: var(--ink); color: white; font-size: 12px; font-weight: 700; transition: .25s; }.toast.show { opacity: 1; transform: translate(-50%, 0); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes float { 50% { transform: translateY(-10px) rotate(8deg); } }
@keyframes pop { 0% { transform: scale(.4) rotate(-16deg); opacity: 0; } }

@media (max-width: 760px) {
  .app-shell { padding: 0 16px 28px; }
  .topbar { height: 72px; }.brand { font-size: 17px; }.brand-mark { width: 34px; height: 34px; }.parent-button { width: 42px; padding: 0; font-size: 0; }.parent-button span { font-size: 18px; }
  .home-hero { grid-template-columns: 1fr; padding: 25px 0 17px; }.home-copy h1 { font-size: clamp(43px, 14vw, 62px); }.planet-scene { display: none; }
  .dashboard-grid, .parent-grid { grid-template-columns: 1fr; }.mission-card { padding: 19px; }.mission-main { grid-template-columns: 1fr; }.mission-main .primary-button { width: 100%; }.mini-missions { grid-template-columns: 1fr; }.progress-card { padding: 20px; }
  .game-layout { margin-top: 4px; }.game-header { gap: 9px; }.game-progress-wrap { gap: 7px; }.question-card { min-height: calc(100vh - 156px); padding: 25px 17px; border-radius: 24px; }.equation { margin: 31px 0 22px; }.answer-display { min-width: 90px; height: 75px; }
  .review-list, .batch-result-list { grid-template-columns: 1fr; }.review-row { grid-template-columns: 28px 1fr 72px; }.batch-review .check-title p { padding: 0 10px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }.complete-card { padding: 28px 19px; }.summary-stats { gap: 7px; }.summary-stat strong { font-size: 20px; }
  .modal-backdrop { padding: 10px; align-items: end; }.modal { border-radius: 28px 28px 0 0; max-height: 88vh; }
}

@media (max-width: 380px) {
  .equation { font-size: 47px; gap: 10px; }.answer-display { min-width: 77px; height: 68px; }.question-card { padding-left: 12px; padding-right: 12px; }.check-actions { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; } }