@charset "UTF-8";
/* ==========================================================================
   1. 基礎變數、主題與共用佈局 (VARIABLES & BASE LAYOUT)
   ========================================================================== */
:root{
  --bg: #faf6ee;
  --line: rgba(51,43,34,.06);
  --ink: #332b22;
  --ink-soft: #6b6152;
  --card: #fffdf8;
  --surface: #ffffff;
  --surface-dim: #f1ede4;
  --shadow-ink: #332b22;
  /* ---------- 全站 UI 與互動主色 (UI BRAND & ACTIONS) ---------- */
  --brand-coral: #e8604c;
  --brand-amber: #ec9a1e;
  --brand-amber-dark: #a5670f;
  --brand-amber-soft: #fbe8c6;
  --good: #2e9e82;
  --bad: #e8604c;

  /* ---------- 國小課本位值教具專屬色 (BLOCKS & PLACE-VALUES) ---------- */
  --th-color: #7c3aed;
  --th-color-dark: #5b21b6;
  --th-soft: #ede9fe;
  /* 百位 (百格板)：國小課本水藍色系 */
  --h-color: #2563eb;
  --h-color-dark: #1d4ed8;
  --h-soft: #dbeafe;
  /* 十位 (十格棒)：國小課本溫暖橘色系 */
  --t-color: #ea580c;
  --t-color-dark: #c2410c;
  --t-soft: #ffedd5;
  /* 個位 (小白積木)：國小課本白灰色系 */
  --o-color: #64748b;
  --o-color-dark: #334155;
  --o-soft: #e2e8f0;
  --radius-card: 22px;
  --shadow-hard: 5px 5px 0 var(--line-strong, rgba(51,43,34,.12));
}

*{ box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html{ scroll-behavior: smooth; touch-action: manipulation; }

body, .card, .machine, .quiz-card, .legend-card, .bundle-strip{
  transition: background-color .25s ease, border-color .25s ease, color .25s ease;
}

button, .ctrl button, .ghost-btn, .primary-btn{
  touch-action: manipulation;
  user-select: none;
  -webkit-touch-callout: none;
}

body{
  margin:0;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: "Noto Sans TC", sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

h1,h2,h3, .zcool{ font-family:"ZCOOL KuaiLe", "Noto Sans TC", sans-serif; font-weight:400; }

.num-font{ font-family:"Baloo 2", "Noto Sans TC", sans-serif; }

a, button{ font-family: inherit; }

.wrap{
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px 90px;
}

/* ---------- 頂部全站導航控制中樞 (SITE HEADER HUB) ---------- */
.site-header-hub{
  background: var(--card);
  border: 2.5px solid var(--ink);
  border-radius: 22px;
  padding: 15px 18px 13px;
  margin: 16px auto 22px;
  max-width: 920px;
  box-shadow: 4px 4px 0 var(--shadow-ink);
  text-align: center;
  position: relative;
  transition: background-color .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header-hub .hub-brand{
  margin-bottom: 2px;
}
.site-header-hub .badge{
  display: inline-block;
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  padding: 2.5px 11px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .03em;
  box-shadow: 2px 2px 0 var(--shadow-ink);
  margin-bottom: 5px;
}
.site-header-hub h1{
  font-size: clamp(20px, 3.4vw, 28px);
  margin: 0 0 3px;
  color: var(--ink);
  line-height: 1.25;
}
.site-header-hub h1 span{ color: var(--brand-coral, #e8604c); }
.site-header-hub p{
  color: var(--ink-soft);
  font-size: 13.5px;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.45;
}

.site-header-hub .audio-bar{
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 8px auto 10px;
  flex-wrap: wrap;
}
.toggle-pill{
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  padding: 4.5px 12px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--shadow-ink);
  transition: transform .08s ease, box-shadow .08s ease, opacity .15s ease, background .15s ease;
}
.toggle-pill:active{ transform: translate(1.5px, 1.5px); box-shadow: 0 0 0 var(--shadow-ink); }
.toggle-pill:focus-visible{ outline: 2.5px solid #2b6ef2; outline-offset: 1px; }
.toggle-pill[aria-pressed="false"]{
  opacity: .5;
  background: var(--surface-dim);
  box-shadow: none;
}
.toggle-pill.thousand-pill[aria-pressed="true"]{
  background: var(--th-soft);
  border-color: var(--th-color-dark);
  color: var(--th-color-dark);
}

/* ---------- 主分頁切換導覽列 (MAIN TABS) ---------- */
.main-nav-tabs{
  display: flex;
  justify-content: center;
  gap: 6px;
  margin: 0 auto;
  max-width: 760px;
  width: 100%;
  background: var(--surface-dim);
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 4px;
  box-shadow: 2.5px 2.5px 0 var(--shadow-ink);
  position: relative;
  user-select: none;
}
.main-tab{
  flex: 1;
  padding: 8.5px 10px;
  background: transparent;
  border: none;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  color: var(--ink-soft);
  cursor: pointer;
  transition: color .2s ease, background-color .2s ease, box-shadow .2s ease, transform .08s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
}
.main-tab .unit-badge{
  font-size: 11px;
  font-weight: 800;
  padding: 1.5px 7px;
  border-radius: 999px;
  background: var(--card);
  border: 1.5px solid var(--border);
  color: var(--ink-soft);
  letter-spacing: .02em;
  transition: all .2s ease;
  white-space: nowrap;
}
.main-tab.active{
  background: var(--card);
  color: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: 2.5px 2.5px 0 var(--shadow-ink);
}
.main-tab.active .unit-badge{
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.main-tab:active{
  transform: translate(1.5px, 1.5px);
}
.main-tab:focus-visible{
  outline: 3px solid #2b6ef2;
  outline-offset: 2px;
}

/* ---------- 單元內容過渡分隔線 (UNIT BOUNDARY DIVIDER) ---------- */
.unit-boundary{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 0 auto 22px;
  max-width: 760px;
}
.unit-boundary::before,
.unit-boundary::after{
  content: "";
  flex: 1;
  height: 2px;
  background: var(--border, rgba(51,43,34,.1));
  border-radius: 2px;
}
.unit-boundary-tag{
  font-size: 12px;
  font-weight: 800;
  color: var(--ink-soft);
  letter-spacing: .05em;
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  padding: 2.5px 14px;
  box-shadow: 2px 2px 0 var(--shadow-ink);
  user-select: none;
}

/* 主分頁內容面板 */
.tab-panel{
  display: none;
  animation: panelFadeIn .22s ease-out;
}
.tab-panel.active{
  display: block;
}
@keyframes panelFadeIn{
  from{ opacity: 0; transform: translateY(6px); }
  to{ opacity: 1; transform: translateY(0); }
}

/* ---------- 單元內部子分頁切換列 (UNIT SUB TABS) ---------- */
.unit-sub-nav{
  display: flex;
  justify-content: center;
  margin: 0 auto 28px;
  max-width: 600px;
}
.unit-sub-tabs{
  display: inline-flex;
  gap: 6px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 999px;
  padding: 5px;
  box-shadow: 2px 2px 0 var(--shadow-ink);
  user-select: none;
  max-width: 100%;
  overflow-x: auto;
}
.unit-sub-tab{
  padding: 8px 20px;
  background: transparent;
  border: 1.5px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-soft);
  cursor: pointer;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease, box-shadow .18s ease, transform .08s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
}
.unit-sub-tab:hover{
  color: var(--ink);
  background: rgba(0, 0, 0, 0.04);
}
.unit-sub-tab.active{
  background: var(--card);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 2px 2px 0 var(--shadow-ink);
}
.unit-sub-tab:active{
  transform: translate(1px, 1px);
}
.unit-sub-tab:focus-visible{
  outline: 2.5px solid #2b6ef2;
  outline-offset: 1px;
}

/* 子分頁內容面板 */
.sub-panel{
  display: none;
  animation: panelFadeIn .2s ease-out;
}
.sub-panel.active{
  display: block;
}

/* 籌備中挑戰卡片樣式 (COMBO / COMING SOON CARD) */
.quiz-coming-soon-card{
  background: var(--card);
  border: 2.5px solid var(--ink);
  border-radius: 24px;
  padding: 44px 28px;
  text-align: center;
  max-width: 580px;
  margin: 16px auto 36px;
  box-shadow: 5px 5px 0 var(--shadow-ink);
  animation: panelFadeIn .3s ease-out;
}
.quiz-coming-soon-card .coming-icon{
  font-size: 52px;
  margin-bottom: 14px;
  line-height: 1;
}
.quiz-coming-soon-card h3{
  font-size: 22px;
  font-weight: 900;
  color: var(--ink);
  margin-bottom: 10px;
}
.quiz-coming-soon-card p{
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.65;
  margin-bottom: 24px;
}
.quiz-coming-soon-card .coming-actions{
  display: flex;
  justify-content: center;
  gap: 12px;
}


/* ---------- 千位數顯示/隱藏控制 ---------- */
.thousand-only{
  display: none !important;
}
body.thousand-mode .thousand-only{
  display: block !important;
}
body.thousand-mode .legend-card.thousand-only{
  display: block !important;
}
body.thousand-mode .bundle-row.thousand-only{
  display: flex !important;
}
body.thousand-mode .col.th.thousand-only{
  display: block !important;
}
body.thousand-mode .field.th.thousand-only{
  display: block !important;
}
body.thousand-mode .legend{
  grid-template-columns: repeat(4, 1fr);
}
body.thousand-mode .columns{
  grid-template-columns: repeat(4, 1fr);
}

.display-row{
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 12px;
  flex-wrap:wrap;
}
.speaker-btn{
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 2px solid var(--ink);
  background: var(--surface);
  font-size: 18px;
  cursor:pointer;
  flex-shrink:0;
  box-shadow: 2.5px 2.5px 0 var(--shadow-ink);
  transition: transform .08s ease, box-shadow .08s ease;
}
.speaker-btn:active{ transform: translate(2px,2px); box-shadow: 0 0 0 var(--shadow-ink); }
.speaker-btn:focus-visible{ outline: 3px solid #2b6ef2; outline-offset:2px; }

.ghost-btn.small{
  padding: 8px 18px;
  min-height: auto;
  font-size: 13px;
  margin: 0;
}


/* ========== 桌機版排版最佳化與紙花動畫 ========== */
/* ========== 桌機版：移除雙欄並排，改為最佳化單欄 ========== */
.main-split{
  display: flex;
  flex-direction: column;
  gap: 0;
}

@media (min-width: 621px){
  .wrap{ padding-left: 32px; padding-right: 32px; }
  .columns{ gap: 20px; }
  .col{ padding: 18px 14px 22px; }
  .ctrl{ gap: 20px; }
  .ctrl button{ width: 56px; height: 56px; font-size: 24px; }
  .legend{ gap: 20px; }
  .quiz-card{ padding: 32px 30px 34px; }
}

@media (min-width: 992px){
  .wrap{ padding-left: 40px; padding-right: 40px; }
  .columns{ gap: 26px; }
  .col{ padding: 22px 18px 26px; }
  .blocks-box{ min-height: 84px; gap: 7px; }
  .machine{ padding: 36px 36px 40px; }
  .quiz-card{ padding: 36px 36px 40px; }
  .quiz-blocks{ gap: 36px; }
  .quiz-blocks .grp .row{ max-width: 180px; }
  .answer-area{ gap: 24px; }
  .field input{ width: 84px; height: 68px; font-size: 30px; }
  .virtual-keypad{ max-width: 360px; padding: 14px; }
  .num-key{ height: 56px; font-size: 26px; }
}

@media (max-width: 860px) and (min-width: 621px){
  body.thousand-mode .legend{ grid-template-columns: repeat(2, 1fr); }
  body.thousand-mode .columns{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px){
  .columns{ grid-template-columns: 1fr; }
  .legend{ grid-template-columns: 1fr; }
  body.thousand-mode .columns{ grid-template-columns: 1fr; }
  body.thousand-mode .legend{ grid-template-columns: 1fr; }
  .col{ display:grid; grid-template-columns: auto 1fr; align-items:center; text-align:left; gap: 4px 14px; }
  .col .label, .col .place-name, .col .count{ grid-column: 1; }
  .col .blocks-box{ grid-column: 2; grid-row: 1 / 4; min-height: 60px; }
  .col .ctrl{ grid-column: 1 / 3; justify-content:flex-start; margin-top: 6px; }
  .result-stats{ grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .001s !important; transition-duration: .001s !important; scroll-behavior:auto !important;}
}

/* ========== Confetti 紙花動畫 ========== */
.confetti-piece{
  position: fixed;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  top: -20px;
  z-index: 9998;
  pointer-events: none;
  animation: confettiFall linear forwards;
}
@keyframes confettiFall{
  0%  { transform: translateX(0) rotate(0deg) scale(1);   opacity: 1; }
  80% { opacity: 1; }
  100%{ transform: translateX(var(--cx,0px)) translateY(var(--cy,100vh)) rotate(var(--cr,360deg)) scale(.6); opacity: 0; }
}

/* ========== Lucide Icons 向量圖標全域規範 ========== */
.lucide, svg.lucide {
  width: 1.15em;
  height: 1.15em;
  vertical-align: -0.18em;
  display: inline-block;
  stroke-width: 2.2;
  stroke: currentColor;
  fill: none;
  flex-shrink: 0;
}
.btn-icon {
  margin-right: 0.35rem;
}
.btn-icon-end {
  margin-left: 0.35rem;
}
.toggle-pill .lucide {
  margin-right: 0.28rem;
  vertical-align: -0.15em;
}
.main-tab .lucide, .unit-sub-tab .lucide, .mode-tab .lucide {
  margin-right: 0.35rem;
  vertical-align: -0.16em;
}