:root {
  --bg: #FFF8EC;
  --card: #FFFFFF;
  --primary: #E86A33;
  --primary-dark: #C24914;
  --green: #41924B;
  --green-light: #D9F2DC;
  --blue: #2D6CB5;
  --blue-dark: #1c4a80;
  --purple: #7B4FA6;
  --gold: #F5B301;
  --red: #C0392B;
  --ink: #3A2E26;
  --gray: #B9AFA5;
  --gray-light: #EFE8DD;
  --shadow: 0 6px 0 rgba(0,0,0,0.12);
}
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { min-height: 100%; }
body {
  font-family: "Microsoft JhengHei", "PingFang TC", "Heiti TC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
  user-select: none;
  -webkit-user-select: none;
}
button { font-family: inherit; color: var(--ink); }

.screen { min-height: 100vh; padding: 16px 16px 40px; max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; }

/* ===== 頂欄 ===== */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; }
.btn-back {
  font-size: 32px; background: var(--card); border: 4px solid var(--gray);
  border-radius: 20px; min-width: 80px; height: 68px; cursor: pointer; box-shadow: var(--shadow);
}
.star-count {
  font-size: 28px; font-weight: bold; background: var(--card);
  border: 4px solid var(--gold); border-radius: 20px; padding: 10px 18px; box-shadow: var(--shadow);
  white-space: nowrap;
}
.btn-help {
  font-size: 32px; background: var(--blue); color: #fff; border: none;
  border-radius: 20px; min-width: 80px; height: 68px; cursor: pointer; box-shadow: var(--shadow);
}

/* ===== 通用 ===== */
.section-title { font-size: 30px; font-weight: 900; color: var(--primary-dark); margin: 16px 0 12px; text-align: center; }
.sub-note { font-size: 22px; text-align: center; color: #7a6a58; margin-bottom: 10px; }
.action-row { display: flex; gap: 14px; margin-top: 16px; }
.action-btn {
  flex: 1; font-size: 30px; font-weight: 900; color: #fff;
  border: none; border-radius: 22px; padding: 20px 8px; cursor: pointer; box-shadow: var(--shadow);
  transition: transform .1s;
}
.action-btn:active { transform: scale(.95); }
.bg-green { background: var(--green); }
.bg-blue { background: var(--blue); }
.bg-purple { background: var(--purple); }
.bg-orange { background: var(--primary); }
.bg-gray { background: var(--gray); }

/* ===== 首頁 ===== */
.home-title { text-align: center; font-size: 52px; font-weight: 900; color: var(--primary); margin: 6px 0 2px; letter-spacing: 6px; }
.home-sub { text-align: center; font-size: 24px; color: #7a6a58; margin-bottom: 18px; }
.hero-card {
  background: linear-gradient(135deg, #FFE3B3, #FFD1A6); border: 5px solid var(--gold);
  border-radius: 28px; padding: 22px; text-align: center; box-shadow: var(--shadow); margin-bottom: 18px;
  cursor: pointer; transition: transform .1s;
}
.hero-card:active { transform: scale(.97); }
.hero-card .hero-line1 { font-size: 30px; font-weight: 900; }
.hero-card .hero-line2 { font-size: 42px; font-weight: 900; color: var(--primary-dark); margin-top: 6px; }
.stat-row { display: flex; gap: 12px; margin-bottom: 18px; }
.stat-box {
  flex: 1; background: var(--card); border-radius: 22px; border: 4px solid var(--gray-light);
  padding: 14px 6px; text-align: center; box-shadow: var(--shadow);
}
.stat-box .num { font-size: 40px; font-weight: 900; color: var(--blue); }
.stat-box .lbl { font-size: 20px; color: #7a6a58; }
.menu { display: flex; flex-direction: column; gap: 16px; }
.menu-card {
  display: flex; align-items: center; gap: 20px;
  background: var(--card); border-radius: 26px; padding: 20px 24px;
  border: 5px solid transparent; cursor: pointer; box-shadow: var(--shadow);
  transition: transform .1s;
}
.menu-card:active { transform: scale(.97); }
.menu-card .emoji { font-size: 54px; }
.menu-card .label { font-size: 34px; font-weight: 900; flex: 1; }
.menu-card .hint { font-size: 20px; color: #7a6a58; }
.menu-card.c1 { border-color: var(--primary); } .menu-card.c1 .label { color: var(--primary-dark); }
.menu-card.c2 { border-color: var(--green); }  .menu-card.c2 .label { color: var(--green); }
.menu-card.c3 { border-color: var(--blue); }   .menu-card.c3 .label { color: var(--blue); }
.menu-card.c4 { border-color: var(--purple); } .menu-card.c4 .label { color: var(--purple); }
.menu-card.c5 { border-color: var(--gold); }   .menu-card.c5 .label { color: #a37a00; }

/* ===== 單元列表 ===== */
.unit-list { display: flex; flex-direction: column; gap: 16px; }
.unit-card {
  display: flex; align-items: center; gap: 18px; background: var(--card);
  border: 5px solid var(--green); border-radius: 26px; padding: 18px 20px;
  cursor: pointer; box-shadow: var(--shadow); transition: transform .1s;
}
.unit-card:active { transform: scale(.97); }
.unit-card.locked { border-color: var(--gray); opacity: .6; }
.unit-card .u-emoji { font-size: 52px; }
.unit-card .u-mid { flex: 1; }
.unit-card .u-title { font-size: 30px; font-weight: 900; }
.unit-card .u-progress { font-size: 20px; color: #7a6a58; margin-top: 2px; }
.unit-card .u-stars { font-size: 24px; }
.unit-done-mark { font-size: 34px; }

/* ===== 單元內關卡 ===== */
.lesson-list { display: flex; flex-direction: column; gap: 14px; }
.lesson-card {
  display: flex; align-items: center; gap: 16px; background: var(--card);
  border: 5px solid var(--blue); border-radius: 24px; padding: 16px 20px;
  cursor: pointer; box-shadow: var(--shadow); transition: transform .1s;
}
.lesson-card:active { transform: scale(.97); }
.lesson-card.done { border-color: var(--green); background: var(--green-light); }
.lesson-card .l-emoji { font-size: 44px; }
.lesson-card .l-title { font-size: 28px; font-weight: 900; flex: 1; }
.lesson-card .l-stars { font-size: 22px; }

/* ===== 學習卡(認字/注音) ===== */
.learn-card {
  background: var(--card); border-radius: 32px; box-shadow: var(--shadow);
  border: 5px solid var(--green); text-align: center; padding: 18px 16px 24px; flex: 1;
  display: flex; flex-direction: column; justify-content: center; gap: 6px;
}
.learn-symbol { font-size: 150px; font-weight: 900; line-height: 1.05; color: var(--primary); }
.learn-symbol.small { font-size: 110px; }
.learn-zy { font-size: 34px; color: var(--blue); font-weight: 900; }
.learn-emoji { font-size: 80px; line-height: 1.1; }
.learn-word { font-size: 44px; font-weight: 900; }
.learn-sentence { font-size: 30px; color: #5a4a38; margin-top: 6px; line-height: 1.5; }
.nav-row { display: flex; gap: 14px; margin-top: 14px; }
.nav-btn {
  flex: 1; font-size: 34px; background: var(--card); border: 4px solid var(--gray);
  border-radius: 22px; padding: 14px 0; cursor: pointer; box-shadow: var(--shadow);
}
.dots { text-align: center; font-size: 20px; letter-spacing: 4px; margin-top: 12px; color: var(--gray); }
.dots b { color: var(--primary); }

/* ===== 符號格 ===== */
.symbol-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.symbol-btn {
  font-size: 48px; font-weight: 900; background: var(--card); border: 4px solid var(--primary);
  border-radius: 22px; padding: 12px 0 6px; cursor: pointer; box-shadow: var(--shadow);
  position: relative; transition: transform .1s;
}
.symbol-btn:active { transform: scale(.94); }
.symbol-btn .mini { display: block; font-size: 22px; font-weight: normal; }
.symbol-btn .done { position: absolute; top: 4px; right: 8px; font-size: 18px; }

/* ===== 測驗 ===== */
.quiz-progress { display: flex; justify-content: center; gap: 8px; margin: 6px 0 14px; font-size: 30px; flex-wrap: wrap; }
.big-sound-btn {
  font-size: 70px; background: var(--blue); border: none; border-radius: 36px;
  width: 190px; height: 150px; margin: 6px auto 22px; display: block; cursor: pointer;
  box-shadow: 0 8px 0 var(--blue-dark); transition: transform .1s; color: #fff;
}
.big-sound-btn:active { transform: scale(.95); }
.quiz-prompt {
  text-align: center; background: var(--card); border: 5px solid var(--gold); border-radius: 28px;
  padding: 18px; margin-bottom: 22px; box-shadow: var(--shadow);
}
.quiz-prompt .qp-emoji { font-size: 90px; line-height: 1.15; }
.quiz-prompt .qp-text { font-size: 36px; font-weight: 900; line-height: 1.5; }
.quiz-prompt .qp-text .blank {
  display: inline-block; min-width: 58px; border-bottom: 6px solid var(--primary);
  color: var(--primary); font-weight: 900;
}
.choice-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.choice-btn {
  font-size: 66px; font-weight: 900; background: var(--card); border: 5px solid var(--primary);
  border-radius: 26px; padding: 20px 0; cursor: pointer; box-shadow: var(--shadow); transition: transform .1s;
}
.choice-btn:active { transform: scale(.94); }
.choice-btn.correct { background: var(--green-light); border-color: var(--green); }
.choice-btn.wrong { background: #FADBD8; border-color: var(--red); opacity: .6; }

/* ===== 手寫 ===== */
.write-head { display: flex; align-items: center; justify-content: center; gap: 16px; margin-bottom: 10px; flex-wrap: wrap; }
.write-symbol-label { font-size: 54px; font-weight: 900; color: var(--primary); }
.write-word-label { font-size: 28px; }
canvas#traceCanvas {
  display: block; width: 100%; max-width: 460px; margin: 0 auto;
  background: var(--card); border: 5px dashed var(--purple); border-radius: 28px;
  touch-action: none; box-shadow: var(--shadow);
}

/* ===== 關卡選單(注音遊戲) ===== */
.level-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.level-btn {
  background: var(--card); border: 4px solid var(--blue); border-radius: 24px;
  padding: 16px 8px; cursor: pointer; box-shadow: var(--shadow); text-align: center; transition: transform .1s;
}
.level-btn:active { transform: scale(.96); }
.level-btn .lv-num { font-size: 26px; font-weight: 900; color: var(--blue); }
.level-btn .lv-syms { font-size: 30px; font-weight: 900; margin: 4px 0; }
.level-btn .lv-stars { font-size: 22px; min-height: 28px; }
.level-btn.locked { border-color: var(--gray); opacity: .55; }

/* ===== 結果 ===== */
.result-box { text-align: center; margin: auto 0; padding: 30px 0; }
.result-stars { font-size: 84px; letter-spacing: 8px; }
.result-text { font-size: 42px; font-weight: 900; color: var(--primary); margin: 16px 0 8px; }
.result-sub { font-size: 26px; color: #7a6a58; margin-bottom: 26px; }

/* ===== 常用句 ===== */
.phrase-card {
  background: var(--card); border: 5px solid var(--gold); border-radius: 26px;
  padding: 20px; text-align: center; margin-bottom: 14px; cursor: pointer;
  box-shadow: var(--shadow); transition: transform .1s;
}
.phrase-card:active { transform: scale(.97); }
.phrase-card .p-emoji { font-size: 54px; }
.phrase-card .p-text { font-size: 36px; font-weight: 900; margin-top: 6px; line-height: 1.4; }

/* ===== 月曆 / 獎勵 ===== */
.streak-banner {
  text-align: center; background: linear-gradient(135deg,#FFE3B3,#FFD1A6);
  border: 5px solid var(--gold); border-radius: 26px; padding: 18px; margin-bottom: 16px; box-shadow: var(--shadow);
}
.streak-banner .fire { font-size: 60px; }
.streak-banner .s-text { font-size: 30px; font-weight: 900; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; margin-bottom: 18px; }
.cal-head { text-align: center; font-size: 20px; font-weight: 900; color: #7a6a58; padding: 4px 0; }
.cal-day {
  aspect-ratio: 1; background: var(--card); border: 3px solid var(--gray-light); border-radius: 14px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 18px;
}
.cal-day.stamped { border-color: var(--gold); background: #FFF3D6; }
.cal-day.today { border-color: var(--blue); border-width: 4px; }
.cal-day .stamp { font-size: 22px; }
.badge-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.badge-card {
  background: var(--card); border: 4px solid var(--gray-light); border-radius: 22px;
  padding: 14px; text-align: center; box-shadow: var(--shadow);
}
.badge-card.earned { border-color: var(--gold); background: #FFF9E8; }
.badge-card .b-emoji { font-size: 48px; filter: grayscale(1); opacity: .4; }
.badge-card.earned .b-emoji { filter: none; opacity: 1; }
.badge-card .b-name { font-size: 22px; font-weight: 900; margin-top: 4px; }
.badge-card .b-desc { font-size: 18px; color: #7a6a58; }

/* ===== 設定 ===== */
.code-box {
  background: var(--card); border: 5px solid var(--blue); border-radius: 26px;
  padding: 22px; text-align: center; margin-bottom: 18px; box-shadow: var(--shadow);
}
.code-box .c-label { font-size: 26px; color: #7a6a58; }
.code-box .c-code { font-size: 64px; font-weight: 900; letter-spacing: 10px; color: var(--blue); margin: 8px 0; }
.code-input {
  font-size: 44px; font-weight: 900; text-align: center; letter-spacing: 8px;
  width: 100%; padding: 14px; border: 4px solid var(--gray); border-radius: 20px;
  text-transform: uppercase; font-family: inherit;
}
.sync-note { font-size: 22px; text-align: center; color: #7a6a58; margin-top: 10px; }

/* ===== 慶祝動畫 ===== */
.confetti-piece {
  position: fixed; font-size: 44px; pointer-events: none; z-index: 999;
  animation: fall 1.8s ease-in forwards;
}
@keyframes fall {
  0%   { transform: translateY(-10vh) rotate(0deg); opacity: 1; }
  100% { transform: translateY(105vh) rotate(400deg); opacity: .3; }
}
.pop {
  position: fixed; left: 50%; top: 40%; transform: translate(-50%,-50%) scale(0);
  font-size: 120px; z-index: 999; pointer-events: none;
  animation: popup .9s ease forwards;
}
@keyframes popup {
  0% { transform: translate(-50%,-50%) scale(0); }
  60% { transform: translate(-50%,-50%) scale(1.3); }
  100% { transform: translate(-50%,-50%) scale(1); opacity: 0; }
}