:root {
  --primary: #1a3a6e;
  --primary-2: #146c94;
  --accent: #2f9e94;
  --accent-warm: #e8743b;
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1c2530;
  --muted: #6b7688;
  --border: #e3e8f0;
  --danger: #d1425a;
  --success: #2e9e5b;
  --radius: 16px;
  --font-lao: "Noto Sans Lao", sans-serif;
  --font-ko: "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-lao), var(--font-ko), sans-serif;
  -webkit-tap-highlight-color: transparent;
}
button, input, textarea { font-family: inherit; }
h1, h2, h3, h4 { font-family: var(--font-lao), var(--font-ko), sans-serif; margin: 0 0 8px; }
p { margin: 0 0 10px; line-height: 1.6; }
.hidden { display: none !important; }

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  color: #fff; padding: 14px 16px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
}
.topbar h1 { font-size: 18px; margin: 0; flex: 1; text-align: center; }
.icon-btn, .student-btn {
  background: rgba(255,255,255,0.15); border: none; color: #fff;
  width: 36px; height: 36px; border-radius: 50%; font-size: 18px;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
}
.spacer { width: 36px; }
.student-btn { font-weight: 700; }

main#app { max-width: 560px; margin: 0 auto; padding: 20px 16px 48px; min-height: calc(100vh - 64px); }

/* ---------- Splash ---------- */
.splash { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 70vh; text-align: center; }
.splash-badge {
  width: 96px; height: 96px; border-radius: 26px;
  background: linear-gradient(160deg, var(--primary-2), var(--primary));
  color: #fff; font-family: var(--font-ko); font-weight: 900; font-size: 40px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 30px rgba(20,60,110,0.35); margin-bottom: 18px;
}
.splash-title { font-size: 26px; font-weight: 800; color: var(--primary); }
.splash-sub { color: var(--muted); }
.splash-loader { display: flex; gap: 6px; margin-top: 18px; }
.splash-loader span { width: 8px; height: 8px; border-radius: 50%; background: var(--primary-2); animation: bounce 1s infinite ease-in-out; }
.splash-loader span:nth-child(2) { animation-delay: 0.15s; }
.splash-loader span:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce { 0%, 80%, 100% { transform: translateY(0); opacity: .4; } 40% { transform: translateY(-8px); opacity: 1; } }

/* ---------- Auth ---------- */
.auth-view { display: flex; flex-direction: column; align-items: center; padding-top: 12px; }
.auth-logo {
  width: 68px; height: 68px; border-radius: 20px;
  background: linear-gradient(160deg, var(--primary-2), var(--primary));
  color: #fff; font-family: var(--font-ko); font-weight: 900; font-size: 30px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 10px;
}
.auth-app-name { font-weight: 800; color: var(--primary); margin-bottom: 18px; }
.auth-tabs { display: flex; background: var(--card); border-radius: 999px; padding: 4px; margin-bottom: 20px; box-shadow: 0 1px 4px rgba(0,0,0,0.06); }
.auth-tab { border: none; background: transparent; padding: 10px 20px; border-radius: 999px; font-weight: 600; color: var(--muted); cursor: pointer; }
.auth-tab.active { background: var(--primary); color: #fff; }
.auth-form { width: 100%; display: flex; flex-direction: column; gap: 14px; }
.auth-form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--muted); font-weight: 600; }
.auth-form input, .auth-form textarea {
  padding: 12px 14px; border-radius: 12px; border: 1.5px solid var(--border);
  font-size: 15px; background: #fff; color: var(--text);
}
.auth-form input:focus, .auth-form textarea:focus { outline: none; border-color: var(--primary-2); }
.form-row { display: flex; gap: 10px; }
.form-row label { flex: 1; }
.auth-error { color: var(--danger); font-size: 14px; margin-top: 12px; min-height: 18px; text-align: center; }
.auth-notice { color: var(--success); font-size: 14px; margin-top: 8px; text-align: center; font-weight: 600; }

.btn-primary, .btn-secondary, .btn-ghost, .btn-ghost-sm, .btn-danger-sm {
  border: none; border-radius: 12px; padding: 13px 18px; font-weight: 700; cursor: pointer; font-size: 15px;
}
.btn-primary { background: linear-gradient(135deg, var(--primary-2), var(--primary)); color: #fff; width: 100%; box-shadow: 0 6px 16px rgba(20,60,110,0.25); }
.btn-primary:disabled { opacity: 0.6; }
.btn-secondary { background: #fff; color: var(--primary); border: 1.5px solid var(--border); width: 100%; margin-top: 16px; }
.btn-ghost { background: transparent; color: var(--primary); border: 1.5px solid var(--border); }
.btn-ghost-sm { background: rgba(20,60,110,0.08); color: var(--primary); padding: 8px 12px; border-radius: 10px; font-size: 13px; }
.btn-danger-sm { background: rgba(209,66,90,0.1); color: var(--danger); padding: 6px 10px; border-radius: 8px; font-size: 13px; }
.text-link { background: none; border: none; color: var(--muted); text-decoration: underline; font-size: 13px; cursor: pointer; display: block; margin: 24px auto 0; }
.forgot-password-box {
  flex-direction: column; gap: 10px; width: 100%; margin-top: 14px; background: var(--card);
  border-radius: 12px; padding: 14px; box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.forgot-password-box label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); font-weight: 600; }
.forgot-password-box input {
  padding: 10px 12px; border-radius: 10px; border: 1.5px solid var(--border); font-size: 14px;
}

/* ---------- Home ---------- */
.home-cover { width: 100%; height: auto; border-radius: 16px; margin-bottom: 16px; box-shadow: 0 4px 16px rgba(0,0,0,0.12); }
.home-hero { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.hero-hi { color: var(--muted); font-size: 13px; margin: 0; }
.home-hero h2 { color: var(--primary); font-size: 22px; }
.avatar-btn {
  width: 44px; height: 44px; border-radius: 50%; border: none;
  background: linear-gradient(160deg, var(--primary-2), var(--primary)); color: #fff; font-weight: 800; cursor: pointer;
}
.install-banner {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: #fff8ec; border: 1px solid #f1d9a8; border-radius: 12px; padding: 12px 14px; margin-bottom: 16px; font-size: 13px;
}
.lesson-list { display: flex; flex-direction: column; gap: 12px; }
.lesson-card {
  display: flex; align-items: center; gap: 14px; background: var(--card);
  border: none; border-radius: var(--radius); padding: 16px; text-align: left; cursor: pointer;
  box-shadow: 0 2px 10px rgba(20,30,60,0.06); width: 100%;
}
.lesson-card.locked { opacity: 0.55; cursor: default; }
.lesson-card.locked-payment { opacity: 0.85; cursor: pointer; }
.lesson-icon {
  width: 52px; height: 52px; border-radius: 14px; flex-shrink: 0;
  background: linear-gradient(160deg, var(--primary-2), var(--primary)); color: #fff;
  font-family: var(--font-ko); font-weight: 800; font-size: 22px;
  display: flex; align-items: center; justify-content: center;
}
.lesson-info { flex: 1; }
.lesson-info h3 { font-size: 16px; margin-bottom: 2px; color: var(--text); }
.lesson-info p { font-size: 13px; color: var(--muted); margin: 0; }
.lesson-arrow { font-size: 22px; color: var(--muted); }
.admin-link { margin-top: 24px; width: 100%; }

.home-section-title { font-size: 14px; color: var(--muted); margin: 22px 0 10px; text-transform: uppercase; letter-spacing: 0.03em; }
.home-view > .home-section-title:first-of-type { margin-top: 4px; }
.topic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.topic-card {
  background: var(--card); border: none; border-radius: var(--radius); padding: 16px 12px;
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 4px; cursor: pointer;
  box-shadow: 0 2px 10px rgba(20,30,60,0.06);
}
.topic-card:active { transform: scale(0.97); }
.topic-icon {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 4px;
  background: linear-gradient(160deg, var(--accent), var(--primary-2)); color: #fff;
  font-family: var(--font-ko); font-weight: 800; font-size: 20px;
  display: flex; align-items: center; justify-content: center;
}
.topic-title { font-size: 14px; font-weight: 700; color: var(--text); }
.topic-sub { font-size: 11px; color: var(--muted); }
.topic-view { padding-top: 4px; }

/* ---------- Hub (ບົດຮຽນ / EPS-TOPIK chooser) ---------- */
.hub-cards { display: flex; flex-direction: column; gap: 14px; margin-top: 8px; }
.hub-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px; text-align: left;
  background: var(--card); border: none; border-radius: var(--radius); padding: 20px;
  cursor: pointer; box-shadow: 0 2px 10px rgba(20,30,60,0.06); width: 100%;
}
.hub-card:active { transform: scale(0.98); }
.hub-card-icon { font-size: 32px; }
.hub-card-title { font-size: 17px; font-weight: 800; color: var(--text); }
.hub-card-sub { font-size: 13px; color: var(--muted); }

/* ---------- EPS-TOPIK ---------- */
.eps-mode-tabs { margin-bottom: 18px; }
.eps-category-list { display: flex; flex-direction: column; gap: 10px; }
.eps-category-card {
  display: flex; align-items: center; gap: 12px; background: var(--card);
  border: none; border-radius: var(--radius); padding: 14px 16px; text-align: left; cursor: pointer;
  box-shadow: 0 2px 10px rgba(20,30,60,0.06); width: 100%;
}
.eps-category-icon { font-size: 26px; flex-shrink: 0; }
.eps-category-info { flex: 1; min-width: 0; }
.eps-category-title { font-size: 14px; font-weight: 700; color: var(--text); }
.eps-category-sub { font-size: 12px; color: var(--muted); font-family: var(--font-ko); }
.eps-category-progress { font-size: 13px; font-weight: 700; color: var(--muted); flex-shrink: 0; }
.eps-category-progress.done { color: var(--success); }
.eps-question-card {
  background: var(--card); border-radius: var(--radius); padding: 18px;
  box-shadow: 0 2px 10px rgba(20,30,60,0.06); margin-top: 10px;
}
.eps-question-image { width: 100%; border-radius: 12px; margin-bottom: 12px; }
.eps-question-audio { width: 100%; margin-bottom: 12px; }
.eps-question-text { font-family: var(--font-ko); font-size: 15px; font-weight: 600; margin-bottom: 14px; white-space: pre-wrap; }
.eps-choices { margin-top: 4px; }
.eps-choices-image { grid-template-columns: 1fr 1fr; }
.eps-choice-image-btn { padding: 6px; }
.eps-choice-image-btn img { width: 100%; border-radius: 8px; display: block; }
.eps-explanation {
  margin-top: 14px; padding: 12px 14px; background: var(--bg); border-radius: 12px;
  font-size: 13px; color: var(--muted); line-height: 1.6;
}
.eps-next-btn { width: 100%; margin-top: 14px; }

/* ---------- Profile ---------- */
.profile-view { display: flex; flex-direction: column; align-items: center; text-align: center; padding-top: 10px; }
.profile-avatar {
  width: 84px; height: 84px; border-radius: 50%;
  background: linear-gradient(160deg, var(--primary-2), var(--primary)); color: #fff;
  font-weight: 800; font-size: 32px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px;
}
.profile-username { color: var(--muted); margin-bottom: 20px; }
.profile-card { width: 100%; background: var(--card); border-radius: var(--radius); padding: 16px; box-shadow: 0 2px 10px rgba(20,30,60,0.06); }
.profile-card div { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.profile-card div:last-child { border-bottom: none; }
.profile-card span { color: var(--muted); }

/* ---------- Lesson flow ---------- */
.lesson-progress { margin-bottom: 18px; }
.lesson-progress-bar { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; }
.lesson-progress-bar div { height: 100%; background: linear-gradient(90deg, var(--accent), var(--primary-2)); transition: width 0.3s; }
.lesson-progress p { font-size: 13px; color: var(--muted); margin: 8px 0 0; text-align: center; }
.lesson-body { min-height: 50vh; }
.lesson-nav { display: flex; gap: 10px; margin-top: 24px; }
.lesson-nav button { flex: 1; }

.section-lead { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.intro-section { text-align: center; }
.intro-emoji { font-family: var(--font-ko); font-size: 40px; font-weight: 900; color: var(--primary-2); margin-bottom: 12px; }
.intro-section p { text-align: left; font-size: 14px; }
.hint { text-align: center !important; color: var(--accent); font-weight: 600; }

.letter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 10px; }
.letter-card {
  background: var(--card); border: 1.5px solid var(--border); border-radius: 14px;
  padding: 14px 8px; display: flex; flex-direction: column; align-items: center; gap: 4px; cursor: pointer;
}
.letter-card:active { transform: scale(0.96); background: #eef4fb; }
.letter-hangul { font-family: var(--font-ko); font-size: 28px; font-weight: 700; color: var(--primary); }
.letter-lao, .letter-speak { font-size: 12px; color: var(--muted); text-align: center; }

/* ---------- Builder ---------- */
.builder-section { text-align: center; }
.builder-display {
  background: linear-gradient(160deg, #eaf2fb, #fff); border-radius: 24px; padding: 30px;
  margin-bottom: 8px; box-shadow: inset 0 0 0 1.5px var(--border);
}
.builder-display span { font-family: var(--font-ko); font-size: 96px; font-weight: 800; color: var(--primary); }
.builder-lao { color: var(--muted); font-size: 14px; margin-bottom: 14px; min-height: 20px; }
.builder-pickers { text-align: left; margin-top: 24px; display: flex; flex-direction: column; gap: 16px; }
.builder-pickers h4 { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.pick-row { display: flex; flex-wrap: wrap; gap: 8px; }
.pick {
  border: 1.5px solid var(--border); background: #fff; border-radius: 10px; padding: 8px 12px;
  font-family: var(--font-ko); font-size: 16px; cursor: pointer; min-width: 40px;
}
.pick.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.builder-examples { margin-top: 24px; text-align: left; }
.builder-examples h4 { font-size: 13px; color: var(--muted); }
.example-chip-list { display: flex; flex-wrap: wrap; gap: 8px; }
.example-chip {
  border: 1px solid var(--border); background: #fff; border-radius: 12px; padding: 8px 12px;
  display: flex; flex-direction: column; align-items: center; cursor: pointer;
}
.example-chip b { font-family: var(--font-ko); font-size: 18px; color: var(--primary); }
.example-chip small { color: var(--muted); font-size: 11px; }

/* ---------- Batchim ---------- */
.batchim-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.batchim-card {
  background: #fff; border: 2px solid; border-radius: 14px; padding: 12px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.batchim-rep { font-family: var(--font-ko); font-size: 22px; font-weight: 800; }
.batchim-roman { font-size: 12px; color: var(--muted); font-weight: 700; }
.batchim-members { font-family: var(--font-ko); font-size: 13px; color: var(--text); }
.batchim-lao { font-size: 12px; color: var(--muted); }
.mt { margin-top: 24px; }

/* ---------- Quiz ---------- */
.quiz-section { text-align: center; }
.quiz-progress { color: var(--muted); font-size: 13px; }
.quiz-prompt {
  display: flex; align-items: center; justify-content: center; gap: 14px;
  background: linear-gradient(160deg, #eaf2fb, #fff); border-radius: 24px; padding: 30px; margin: 16px 0;
}
.quiz-hangul { font-family: var(--font-ko); font-size: 64px; font-weight: 800; color: var(--primary); }
.quiz-hangul-sm { font-size: 30px; line-height: 1.3; }
.quiz-question { font-weight: 700; margin-bottom: 16px; }
.quiz-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.quiz-choice {
  padding: 16px; border-radius: 14px; border: 1.5px solid var(--border); background: #fff;
  font-size: 15px; font-weight: 700; cursor: pointer;
}
.quiz-choice-ko { font-family: var(--font-ko); font-size: 17px; }
.quiz-choice.correct { background: rgba(46,158,91,0.15); border-color: var(--success); color: var(--success); }
.quiz-choice.wrong { background: rgba(209,66,90,0.15); border-color: var(--danger); color: var(--danger); }
.listening-prompt {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  background: linear-gradient(160deg, #eaf2fb, #fff); border-radius: 24px; padding: 36px 20px; margin: 16px 0;
}
.listening-speak-btn {
  width: 88px; height: 88px; border-radius: 50%; border: none; background: var(--primary); color: #fff;
  font-size: 36px; cursor: pointer; box-shadow: 0 6px 18px rgba(45,108,223,0.35);
}
.listening-hint { color: var(--muted); font-size: 13px; margin: 0; }
.quiz-result { text-align: center; padding-top: 30px; }
.result-emoji { font-size: 56px; margin-bottom: 10px; }
.result-score { font-size: 28px; font-weight: 800; color: var(--primary); }
.result-actions { display: flex; gap: 10px; margin-top: 24px; }
.result-actions button { flex: 1; }

/* ---------- Flashcards ---------- */
.flash-section { text-align: center; }
.flash-card { min-height: 100px; }
.flash-answer { min-height: 40px; font-size: 20px; font-weight: 700; color: var(--primary); display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 16px; }
.flash-actions { display: flex; gap: 10px; }
.flash-actions button { flex: 1; }
.btn-again, .btn-got-it {
  padding: 16px; border-radius: 14px; border: 1.5px solid var(--border); cursor: pointer; font-size: 15px; font-weight: 700;
}
.btn-again { background: rgba(209,66,90,0.1); color: var(--danger); border-color: rgba(209,66,90,0.3); }
.btn-got-it { background: rgba(46,158,91,0.12); color: var(--success); border-color: rgba(46,158,91,0.3); }

/* ---------- Sentence-order drill ---------- */
.sentord-section { text-align: center; }
.sentord-answer {
  min-height: 56px; background: var(--card); border-radius: 14px; padding: 14px;
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; align-items: center;
  font-family: var(--font-ko); font-size: 18px; font-weight: 700; margin-bottom: 16px;
}
.sentord-placeholder { color: var(--muted); font-weight: 400; font-size: 14px; font-family: var(--font-lao), sans-serif; }
.sentord-chip-placed {
  background: rgba(46,158,91,0.15); color: var(--success); border-radius: 10px; padding: 6px 10px;
}
.sentord-tray { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.sentord-chip {
  font-family: var(--font-ko); font-size: 16px; font-weight: 700; padding: 10px 14px;
  border-radius: 12px; border: 1.5px solid var(--border); background: #fff; cursor: pointer;
}
.sentord-shake { animation: sentord-shake 0.3s; border-color: var(--danger); }
@keyframes sentord-shake {
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}
.sentord-feedback { margin-top: 18px; min-height: 20px; }
.sentord-correct { color: var(--success); font-weight: 700; display: flex; align-items: center; justify-content: center; gap: 8px; }
.sentord-lao { color: var(--muted); font-size: 14px; margin: 6px 0 16px; }

/* ---------- Modal / Announcements ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(10,20,40,0.55); z-index: 100;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal-card {
  background: #fff; border-radius: 20px; padding: 26px 20px; max-width: 400px; width: 100%;
  position: relative; text-align: center; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.modal-close {
  position: absolute; top: 12px; right: 12px; width: 30px; height: 30px; border-radius: 50%;
  border: none; background: var(--bg); font-size: 15px; cursor: pointer;
}
.ann-emoji { font-size: 44px; margin-bottom: 8px; }
.ann-img { width: 100%; border-radius: 14px; margin-bottom: 12px; object-fit: cover; max-height: 200px; }
.announcement-card h3 { color: var(--primary); margin-top: 6px; }
.ann-dots { display: flex; justify-content: center; gap: 6px; margin-top: 14px; }
.ann-dots .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--border); cursor: pointer; }
.ann-dots .dot.active { background: var(--primary-2); }

/* ---------- Dictionary ---------- */
.dict-search input {
  width: 100%; padding: 14px 16px; border-radius: 14px; border: 1.5px solid var(--border);
  font-size: 16px; background: #fff; color: var(--text); margin-bottom: 10px;
}
.dict-search input:focus { outline: none; border-color: var(--primary-2); }
.dict-results { display: flex; flex-direction: column; gap: 8px; }
.dict-row {
  display: flex; align-items: center; gap: 12px; background: var(--card);
  border: none; border-radius: 12px; padding: 12px 14px; text-align: left; cursor: pointer;
  box-shadow: 0 1px 4px rgba(20,30,60,0.05); width: 100%;
}
.dict-ko { font-family: var(--font-ko); font-size: 17px; font-weight: 700; color: var(--primary); min-width: 90px; }
.dict-lao { flex: 1; font-size: 14px; color: var(--text); }
.dict-speak { font-size: 14px; opacity: 0.6; }

/* ---------- Phrase cards (greeting-style lessons) ---------- */
.phrase-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 4px; }
.phrase-card {
  display: flex; align-items: center; gap: 14px; background: var(--card);
  border-radius: var(--radius); padding: 14px; box-shadow: 0 2px 10px rgba(20,30,60,0.06);
}
.phrase-illust { width: 84px; flex-shrink: 0; }
.phrase-illust svg { width: 100%; height: auto; display: block; }
.phrase-body { flex: 1; min-width: 0; }
.phrase-ko-row { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.phrase-ko { font-family: var(--font-ko); font-size: 19px; font-weight: 700; color: var(--primary); }
.phrase-lao { font-size: 14px; font-weight: 600; color: var(--text); margin: 0 0 2px; }
.phrase-note { font-size: 12px; color: var(--muted); margin: 0; }

/* ---------- Admin ---------- */
.admin-tabs { display: flex; gap: 6px; overflow-x: auto; margin-bottom: 18px; padding-bottom: 4px; }
.admin-tabs button {
  border: none; background: #fff; border: 1.5px solid var(--border); padding: 9px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 700; color: var(--muted); white-space: nowrap; cursor: pointer;
}
.admin-tabs button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.admin-lesson-picker { display: flex; gap: 6px; overflow-x: auto; margin-bottom: 16px; padding-bottom: 4px; flex-wrap: wrap; }
.admin-lesson-pill, .admin-subtab-pill {
  border: 1.5px solid var(--border); background: #fff; padding: 8px 12px; border-radius: 999px;
  font-size: 12.5px; font-weight: 700; color: var(--muted); white-space: nowrap; cursor: pointer;
}
.admin-lesson-pill.active, .admin-subtab-pill.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.admin-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.admin-row {
  background: var(--card); border-radius: 12px; padding: 12px 14px; display: flex;
  align-items: center; justify-content: space-between; gap: 10px; box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.admin-row-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.admin-row .muted, .muted { color: var(--muted); font-size: 12px; margin: 0; }
.toggle { display: flex; align-items: center; gap: 4px; font-size: 12px; color: var(--muted); }
.badge { background: rgba(47,158,148,0.15); color: var(--accent); font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.admin-form {
  background: var(--card); border-radius: var(--radius); padding: 16px; display: flex; flex-direction: column; gap: 12px;
  box-shadow: 0 2px 10px rgba(20,30,60,0.06); margin-bottom: 20px;
}
.admin-form label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); font-weight: 600; }
.admin-form input, .admin-form textarea {
  padding: 10px 12px; border-radius: 10px; border: 1.5px solid var(--border); font-size: 14px;
}
.cover-preview { width: 100%; height: auto; border-radius: 12px; box-shadow: 0 2px 10px rgba(20,30,60,0.1); }

/* ---------- Lesson 1: vocab grid ---------- */
.vocab-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 10px; }
.vocab-card {
  background: var(--card); border: 1.5px solid var(--border); border-radius: 14px;
  padding: 12px 8px; display: flex; flex-direction: column; align-items: center; gap: 4px; cursor: pointer;
}
.vocab-card:active { transform: scale(0.96); background: #eef4fb; }
.vocab-icon { font-size: 26px; }
.vocab-ko { font-family: var(--font-ko); font-size: 15px; font-weight: 700; color: var(--primary); text-align: center; }
.vocab-lao { font-size: 11px; color: var(--muted); text-align: center; }
.vocab-emoji-icon { width: 84px; flex-shrink: 0; font-size: 40px; text-align: center; }

/* ---------- Lesson 1: dialogue ---------- */
.dialogue-illust { width: 140px; margin: 0 auto 16px; }
.dialogue-list { display: flex; flex-direction: column; gap: 10px; }
.dialogue-row { display: flex; align-items: flex-end; gap: 8px; }
.dialogue-row.dialogue-right { flex-direction: row-reverse; }
.dialogue-flag { font-size: 22px; }
.dialogue-bubble {
  border: none; border-radius: 16px; padding: 10px 14px; max-width: 78%; text-align: left; cursor: pointer;
  background: var(--card); box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.dialogue-row.dialogue-right .dialogue-bubble { background: linear-gradient(135deg, var(--primary-2), var(--primary)); color: #fff; }
.dialogue-ko { display: block; font-family: var(--font-ko); font-size: 15px; font-weight: 700; }
.dialogue-lao { display: block; font-size: 12px; opacity: 0.85; margin-top: 2px; }

/* ---------- Lesson 1: grammar ---------- */
.grammar-title { color: var(--primary); font-family: var(--font-ko); font-size: 22px; }
.grammar-rule { background: var(--card); border-radius: var(--radius); padding: 14px; margin-bottom: 14px; box-shadow: 0 2px 10px rgba(20,30,60,0.06); }
.grammar-rule-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 13px; color: var(--muted); }
.grammar-rule-badge { font-family: var(--font-ko); font-weight: 800; font-size: 16px; color: #fff; background: var(--primary-2); padding: 3px 10px; border-radius: 8px; }
.grammar-examples { display: flex; flex-direction: column; gap: 6px; }
.grammar-example-row {
  display: flex; flex-direction: column; align-items: flex-start; background: var(--bg); border: none; border-radius: 10px;
  padding: 8px 10px; text-align: left; cursor: pointer;
}
.grammar-example-ko { font-family: var(--font-ko); font-weight: 700; font-size: 14px; color: var(--text); }
.grammar-example-lao { font-size: 12px; color: var(--muted); }
.qa-list { display: flex; flex-direction: column; gap: 10px; }
.qa-block { background: var(--card); border-radius: 14px; padding: 10px; box-shadow: 0 1px 4px rgba(0,0,0,0.05); }
.qa-line { display: flex; align-items: baseline; gap: 8px; width: 100%; background: none; border: none; padding: 6px 4px; text-align: left; cursor: pointer; }
.qa-line b { color: var(--accent); flex-shrink: 0; }
.qa-ko { font-family: var(--font-ko); font-weight: 700; font-size: 14px; }
.qa-lao { font-size: 12px; color: var(--muted); margin-left: auto; }

.mistake-list { display: flex; flex-direction: column; gap: 10px; }
.mistake-block { background: var(--card); border-radius: 14px; padding: 10px; box-shadow: 0 1px 4px rgba(0,0,0,0.05); }
.mistake-line { display: flex; align-items: baseline; gap: 8px; width: 100%; background: none; border: none; padding: 6px 4px; text-align: left; }
.mistake-wrong { color: var(--danger); cursor: default; }
.mistake-wrong .mistake-ko { font-family: var(--font-ko); font-weight: 600; font-size: 14px; text-decoration: line-through; text-decoration-color: var(--danger); }
.mistake-correct { cursor: pointer; }
.mistake-correct b { color: var(--success); flex-shrink: 0; }
.mistake-correct .mistake-ko { font-family: var(--font-ko); font-weight: 700; font-size: 14px; }
.mistake-lao { font-size: 12px; color: var(--muted); margin-left: auto; }

/* ໃສ່ສີຄຳຕໍ່ທ້າຍໄວຍະກອນ (grammar particle) ໃຫ້ແຍກອອກຈາກຄຳສັບຫຼັກ ບ່ອນທີ່ມັນປາກົດ */
.gram-ieyo { color: #c94f8f; font-weight: 800; }
.gram-eunneun { color: var(--accent-warm); font-weight: 800; }
.gram-igah { color: #7a5cc4; font-weight: 800; }

/* ---------- Lesson 1: fill-in-the-blank ---------- */
.fill-blank-list { display: flex; flex-direction: column; gap: 14px; }
.fillblank-card { background: var(--card); border-radius: var(--radius); padding: 14px; box-shadow: 0 2px 10px rgba(20,30,60,0.06); }
.fillblank-hint { font-size: 13px; color: var(--muted); margin: 0 0 6px; }
.fillblank-sentence { font-family: var(--font-ko); font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.fillblank-gap { display: inline-block; min-width: 40px; border-bottom: 2px dashed var(--muted); color: var(--muted); text-align: center; }
.fillblank-gap.filled { border-bottom: 2px solid var(--accent); color: var(--accent); font-weight: 800; }
.fillblank-choices { display: flex; gap: 10px; }
.fillblank-choice {
  flex: 1; padding: 10px; border-radius: 10px; border: 1.5px solid var(--border); background: #fff;
  font-family: var(--font-ko); font-size: 16px; font-weight: 700; cursor: pointer;
}
.fillblank-choice.correct { background: rgba(46,158,91,0.15); border-color: var(--success); color: var(--success); }
.fillblank-choice.wrong { background: rgba(209,66,90,0.15); border-color: var(--danger); color: var(--danger); }
.fillblank-result { margin: 10px 0 0; font-size: 13px; color: var(--muted); min-height: 18px; display: flex; align-items: center; gap: 8px; }

/* ---------- Lesson 1: reading ---------- */
.reading-section h3 { color: var(--primary); }
.reading-lines { display: flex; flex-direction: column; gap: 8px; margin-bottom: 4px; }
.reading-line {
  display: flex; flex-direction: column; align-items: flex-start; background: var(--card); border: none;
  border-radius: 12px; padding: 10px 14px; text-align: left; cursor: pointer; box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.reading-ko { font-family: var(--font-ko); font-weight: 700; font-size: 15px; color: var(--primary); }
.reading-lao { font-size: 12px; color: var(--muted); }
.writing-prompt { margin-top: 20px; }
.writing-textarea {
  width: 100%; border-radius: 12px; border: 1.5px solid var(--border); padding: 12px; font-size: 14px;
  font-family: var(--font-lao), var(--font-ko); resize: vertical;
}

/* ---------- Payment gate ---------- */
.payment-info-card {
  background: var(--card); border-radius: var(--radius); padding: 20px; text-align: center;
  box-shadow: 0 2px 10px rgba(20,30,60,0.06); margin-bottom: 18px;
}
.payment-info-card h3 { color: var(--primary); }
.payment-price { font-size: 20px; font-weight: 800; color: var(--accent-warm); margin: 6px 0 14px; }
.payment-qr { width: 100%; max-width: 260px; border-radius: 12px; margin: 0 auto 14px; display: block; box-shadow: 0 2px 10px rgba(20,30,60,0.1); }
.payment-bank-info { text-align: left; background: var(--bg); border-radius: 12px; padding: 12px 14px; margin-bottom: 10px; }
.payment-bank-info p { margin: 0 0 4px; font-size: 14px; }
.payment-proof-preview { width: 100%; max-width: 320px; border-radius: 12px; margin: 12px auto; display: block; box-shadow: 0 2px 10px rgba(20,30,60,0.1); }
.payment-status-card { background: var(--card); border-radius: var(--radius); padding: 24px 20px; text-align: center; box-shadow: 0 2px 10px rgba(20,30,60,0.06); margin-bottom: 14px; }
.payment-status-card.rejected h3 { color: var(--danger); }
.payment-status-card.pending h3 { color: var(--accent-warm); }
.ebook-download-btn { display: block; text-align: center; text-decoration: none; box-sizing: border-box; }

/* ---------- Admin: payment review ---------- */
.payment-review-row {
  display: flex; gap: 12px; background: var(--card); border-radius: 12px; padding: 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05); margin-bottom: 10px;
}
.payment-review-thumb { width: 84px; height: 84px; object-fit: cover; border-radius: 10px; flex-shrink: 0; }
.payment-review-info { flex: 1; min-width: 0; }
.payment-review-info b { font-size: 14px; }
.payment-date-warn { color: var(--accent-warm); font-size: 12px; font-weight: 700; margin: 2px 0; }
.badge-danger { background: rgba(209,66,90,0.12); color: var(--danger); }

@media (min-width: 640px) {
  main#app { padding-top: 32px; }
}