@font-face {
  font-family: "Noto Sans Lao";
  src: url("../fonts/NotoSansLao-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Noto Sans Lao";
  src: url("../fonts/NotoSansLao-Bold.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}

:root {
  --blue: #1c4fa1;
  --blue-dark: #123a7a;
  --blue-light: #e8f0fd;
  --accent: #f4b731;
  --green: #2e9e5b;
  --red: #d64545;
  --ink: #1c1c22;
  --ink-soft: #5b5f6b;
  --bg: #f6f7fb;
  --card-bg: #ffffff;
  --radius: 18px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans Lao", "Noto Sans KR", system-ui, -apple-system, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  padding-bottom: env(safe-area-inset-bottom);
}

.lao { display: block; }
.kr { display: block; font-size: 0.82em; color: var(--ink-soft); }

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--blue);
  color: #fff;
  padding-top: env(safe-area-inset-top);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
}
.app-title {
  margin: 0;
  font-size: 17px;
  line-height: 1.3;
}
.app-title .kr { color: #cfe0fb; }

.icon-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  padding: 16px 16px 40px;
}

.view { display: none; }
.view.active { display: block; animation: fadein .15s ease; }
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }

.draft-banner {
  background: #fff6df;
  border: 1px solid #f0d68a;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 12.5px;
  color: #7a5c00;
  margin: 4px 0 18px;
}
.draft-banner .kr { color: #8a6a10; }

.progress-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 18px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.progress-ring-wrap {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: conic-gradient(var(--blue) calc(var(--pct, 0) * 1%), #e4e8f2 0);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.progress-ring-wrap::after {
  content: "";
  position: absolute;
}
#progress-percent {
  background: #fff;
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--blue);
}
.progress-text .lao { font-weight: 600; font-size: 14px; }

.home-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.home-card {
  background: var(--card-bg);
  border: none;
  border-radius: var(--radius);
  padding: 20px 14px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.home-card:active { transform: scale(.97); }
.home-card-char {
  font-size: 26px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 6px;
}
.home-card .lao { font-size: 14px; font-weight: 600; }
.home-card-quiz .home-card-char { color: var(--accent); }

.deck-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.text-btn {
  background: none;
  border: none;
  color: var(--blue);
  font-size: 14px;
  padding: 8px 4px;
  cursor: pointer;
  display: flex;
  gap: 4px;
}
.deck-position {
  font-size: 13px;
  color: var(--ink-soft);
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  text-align: center;
  position: relative;
}
.card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 11px;
  background: var(--blue-light);
  color: var(--blue);
  padding: 3px 9px;
  border-radius: 20px;
}
.card-char {
  font-size: 72px;
  font-weight: 700;
  color: var(--ink);
  margin: 18px 0 4px;
}
.card-name {
  color: var(--ink-soft);
  font-size: 14px;
  margin-bottom: 18px;
}
.card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #eee;
  padding: 10px 2px;
  text-align: left;
}
.card-label {
  font-size: 12.5px;
  color: var(--ink-soft);
  max-width: 46%;
}
.card-value {
  font-size: 16px;
  font-weight: 600;
}
.lao-word { font-size: 20px; }
.card-note {
  font-size: 12.5px;
  color: var(--ink-soft);
  background: var(--blue-light);
  border-radius: 10px;
  padding: 8px 10px;
  margin-top: 12px;
  text-align: left;
}
.listen-btn {
  width: 100%;
  margin-top: 16px;
  padding: 13px;
  border: none;
  border-radius: 14px;
  background: var(--blue);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}
.listen-btn:active { background: var(--blue-dark); }

.learned-check {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  margin-top: 14px;
  font-size: 13px;
  color: var(--ink-soft);
}
.learned-check input { width: 18px; height: 18px; }

.deck-nav {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.deck-nav-btn {
  flex: 1;
  padding: 14px;
  border-radius: 14px;
  border: none;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  cursor: pointer;
}
.deck-nav-btn:active { background: var(--blue-light); }

.section-title {
  margin: 4px 0 16px;
}
.section-title .lao { font-size: 19px; font-weight: 700; }

.build-lead {
  font-size: 14px;
  margin: 4px 0;
}
.build-examples {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 18px 0;
}
.build-block {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.build-parts {
  font-size: 26px;
  font-weight: 700;
  color: var(--ink-soft);
}
.build-plus { margin: 0 8px; color: #b7bcc8; }
.build-arrow { font-size: 18px; color: #b7bcc8; margin: 4px 0; }
.build-result {
  font-size: 48px;
  font-weight: 700;
  color: var(--blue);
}
.build-caption { font-size: 13px; color: var(--ink-soft); margin-top: 4px; }

.quiz-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  text-align: center;
}
.quiz-prompt-label { font-size: 13px; color: var(--ink-soft); margin: 0 0 10px; }
.quiz-prompt {
  font-size: 56px;
  font-weight: 700;
  margin-bottom: 22px;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.quiz-choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.quiz-choice-btn {
  padding: 16px 8px;
  border-radius: 14px;
  border: 2px solid #e4e8f2;
  background: #fff;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
}
.quiz-choice-btn:active { background: var(--blue-light); }
.quiz-choice-btn.correct { border-color: var(--green); background: #e9f8ee; color: var(--green); }
.quiz-choice-btn.wrong { border-color: var(--red); background: #fbeaea; color: var(--red); }
.quiz-choice-btn[disabled] { cursor: default; }
.quiz-feedback {
  min-height: 20px;
  font-weight: 700;
  margin-top: 16px;
}
.quiz-feedback.correct { color: var(--green); }
.quiz-feedback.wrong { color: var(--red); }

.quiz-result {
  text-align: center;
  padding-top: 30px;
}
.quiz-score {
  font-size: 40px;
  font-weight: 700;
  color: var(--blue);
  margin: 10px 0 26px;
}
.primary-btn {
  display: block;
  width: 100%;
  padding: 15px;
  border: none;
  border-radius: 14px;
  background: var(--blue);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  margin-bottom: 14px;
}