:root {
  --orange:  #FF6B35;
  --orange2: #FF4500;
  --teal:    #1CB0F6;
  --teal2:   #0A91D0;
  --yellow:  #FFD900;
  --yellow2: #E6C200;
  --green:   #58CC02;
  --green2:  #46A302;
  --red:     #FF4B4B;
  --red2:    #CC3B3B;
  --purple:  #CE82FF;
  --bg:      #F7F7F7;
  --white:   #FFFFFF;
  --text:    #3C3C3C;
  --text2:   #777;
  --border:  #E5E5E5;
  --radius:  16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 0 rgba(0,0,0,0.15);
  --shadow-md: 0 4px 0 rgba(0,0,0,0.15);
  --shadow-lg: 0 6px 0 rgba(0,0,0,0.15);
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ═══════════════════════════════
   LOADING SCREEN
═══════════════════════════════ */
#loading-screen {
  position: fixed; inset: 0; z-index: 200;
  background: linear-gradient(160deg, #FF6B35 0%, #FF4500 50%, #FF8C42 100%);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 20px;
}
.loading-logo-big {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 3rem; color: #fff; letter-spacing: -0.5px; font-weight: 900;
  text-shadow: 0 4px 0 rgba(0,0,0,0.15);
}
.loading-logo-big span { color: var(--yellow); }
.loading-orb {
  width: 50px; height: 50px; border-radius: 50%;
  border: 5px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#loading-text { color: rgba(255,255,255,0.8); font-weight: 700; font-size: 0.9rem; }

/* ═══════════════════════════════
   LANDING PAGE
═══════════════════════════════ */
#landing-page {
  display: none;
  min-height: 100vh;
  flex-direction: column;
}
#landing-page.show { display: flex; }

.landing-hero {
  background: linear-gradient(160deg, #FF6B35 0%, #FF4500 60%, #FF8C42 100%);
  padding: 48px 24px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.landing-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='30'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-flag {
  font-size: 4rem; margin-bottom: 12px;
  animation: bounceIn 0.6s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes bounceIn {
  from { transform: scale(0.3); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}
.hero-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 2.6rem; color: #fff; line-height: 1.1; font-weight: 900;
  letter-spacing: -0.5px;
  text-shadow: 0 3px 0 rgba(0,0,0,0.12);
  margin-bottom: 10px; position: relative;
}
.hero-title span { color: var(--yellow); }
.hero-sub {
  font-size: 1rem; color: rgba(255,255,255,0.9);
  font-weight: 600; line-height: 1.5; position: relative;
  max-width: 320px; margin: 0 auto 24px;
}
.hero-chips {
  display: flex; gap: 8px; justify-content: center; flex-wrap: wrap;
  position: relative; margin-bottom: 4px;
}
.hero-chip {
  background: rgba(255,255,255,0.2); border-radius: 999px;
  padding: 6px 14px; font-size: 0.82rem; font-weight: 800; color: #fff;
  backdrop-filter: blur(4px); border: 1.5px solid rgba(255,255,255,0.3);
}

.landing-body {
  flex: 1; padding: 28px 20px; max-width: 420px; margin: 0 auto; width: 100%;
}
.landing-section-title {
  font-size: 0.72rem; font-weight: 800; color: var(--text2);
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px;
}
.lang-options {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
}
.lang-option {
  background: var(--white); border-radius: var(--radius-sm);
  border: 2.5px solid var(--border); padding: 12px 6px 10px;
  text-align: center; cursor: pointer;
  transition: all 0.15s; box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.lang-option:active { transform: translateY(2px); box-shadow: none; }
.lang-option.active {
  border-color: var(--orange); background: #fff5f1;
  box-shadow: 0 3px 0 var(--orange2);
}
.lang-option-flag { font-size: 1.6rem; line-height: 1; }
.lang-option-name { font-size: 0.72rem; font-weight: 800; color: var(--text); }

.landing-cta { display: flex; flex-direction: column; gap: 12px; }
.btn-primary {
  background: var(--orange); color: #fff;
  border: none; border-radius: var(--radius);
  padding: 17px 24px; font-family: 'Inter', sans-serif;
  font-size: 1rem; font-weight: 800; cursor: pointer;
  box-shadow: 0 5px 0 var(--orange2); letter-spacing: 0.3px;
  transition: transform 0.1s, box-shadow 0.1s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%;
}
.btn-primary:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--orange2); }
.btn-start-scratch {
  background: var(--white); color: var(--text);
  border: 3px solid var(--border); border-radius: var(--radius);
  padding: 14px 24px; font-family: 'Inter', sans-serif;
  font-size: 0.95rem; font-weight: 800; cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.1s, box-shadow 0.1s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%;
}
.btn-start-scratch:active { transform: translateY(2px); box-shadow: none; }
.btn-google {
  border: 3px solid var(--border); border-radius: var(--radius);
  padding: 14px 24px; font-family: 'Inter', sans-serif;
  font-size: 0.95rem; font-weight: 800; cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.1s, box-shadow 0.1s;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%;
}
.btn-google:active { transform: translateY(2px); box-shadow: none; }
.google-icon { width: 20px; height: 20px; }
.landing-footer {
  text-align: center; padding: 16px 20px 32px;
  font-size: 0.78rem; color: var(--text2); font-weight: 600;
}
.landing-footer a { color: var(--orange); text-decoration: none; font-weight: 800; }

/* Target language grid */
.target-lang-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
}
.target-lang-option {
  background: var(--white); border-radius: var(--radius-sm);
  border: 2.5px solid var(--border); padding: 12px 6px 10px;
  text-align: center; cursor: pointer;
  transition: all 0.15s; box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  position: relative;
}
.target-lang-option:active:not(.coming-soon) { transform: translateY(2px); box-shadow: none; }
.target-lang-option.active {
  border-color: var(--orange); background: #fff5f1;
  box-shadow: 0 3px 0 var(--orange2);
}
.target-lang-option.coming-soon {
  opacity: 0.55; cursor: not-allowed;
}
.tlang-flag { font-size: 1.6rem; line-height: 1; }
.tlang-name { font-size: 0.7rem; font-weight: 800; color: var(--text); line-height: 1.2; }
.tlang-soon {
  position: absolute; top: -1px; right: -1px;
  background: var(--text2); color: #fff;
  font-size: 0.55rem; font-weight: 900; padding: 2px 5px;
  border-radius: 0 var(--radius-sm) 0 var(--radius-sm);
  letter-spacing: 0.3px; text-transform: uppercase;
}

/* ═══════════════════════════════
   MAIN APP
═══════════════════════════════ */
#app {
  display: none; flex-direction: column;
  min-height: 100vh; max-width: 500px; margin: 0 auto;
}
#app.show { display: flex; }

/* ── APP HEADER ── */
.app-header {
  background: linear-gradient(135deg, #FF6B35 0%, #FF4500 100%);
  padding: 14px 16px 16px;
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 3px 12px rgba(255,107,53,0.35);
}
.app-header-top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}
.app-logo {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.5rem; color: #fff; letter-spacing: -0.3px; font-weight: 900;
}
.app-logo span { color: var(--yellow); }
.header-right { display: flex; align-items: center; gap: 8px; }

.btn-lang {
  background: rgba(255,255,255,0.2); border: 1.5px solid rgba(255,255,255,0.4);
  border-radius: 999px; padding: 6px 10px;
  font-family: 'Inter', sans-serif; font-size: 0.75rem; font-weight: 800;
  color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  min-width: 34px; min-height: 34px;
}
.btn-user {
  display: flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,0.2); border: 1.5px solid rgba(255,255,255,0.4);
  border-radius: 999px; padding: 4px 12px 4px 6px;
  font-family: 'Inter', sans-serif; font-size: 0.78rem; font-weight: 800;
  color: #fff; cursor: pointer;
}
.btn-signin {
  background: #fff; color: var(--orange);
  border: none; border-radius: 999px; padding: 7px 16px;
  font-family: 'Inter', sans-serif; font-size: 0.82rem; font-weight: 800;
  cursor: pointer; box-shadow: 0 2px 0 rgba(0,0,0,0.1);
}
.btn-avatar {
  background: none; border: 2px solid rgba(255,255,255,0.5);
  border-radius: 50%; padding: 1px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  -webkit-tap-highlight-color: transparent;
}
.btn-avatar:active { opacity: 0.7; }

/* ── USER DROPDOWN ── */
#user-dropdown {
  position:fixed; z-index:200;
  background:#fff; border-radius:14px;
  box-shadow:0 8px 24px rgba(0,0,0,0.18);
  border:2px solid var(--border); overflow:hidden; min-width:180px;
}
.user-drop-info {
  padding:14px 16px 10px;
  border-bottom:1px solid var(--border);
  font-size:0.8rem; font-weight:700; color:var(--text2);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.user-drop-btn {
  display:flex; align-items:center; gap:10px;
  width:100%; padding:12px 16px; border:none;
  background:#fff; font-family:'Inter',sans-serif;
  font-size:0.88rem; font-weight:700; color:var(--red);
  cursor:pointer; text-align:left;
}
.user-drop-btn:active { background:var(--bg); }
.user-av { width: 28px; height: 28px; border-radius: 50%; object-fit: cover; display: block; }
.sync-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green); border: 2px solid rgba(255,255,255,0.5);
}
.sync-dot.syncing { background: var(--yellow); animation: pulse 0.8s ease infinite; }
.sync-dot.err { background: var(--red); }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }

/* ── PROGRESS BAR IN HEADER ── */
.header-progress {
  background: rgba(255,255,255,0.2); border-radius: 999px;
  height: 10px; overflow: hidden; position: relative;
}
.header-progress-fill {
  height: 100%; background: var(--yellow);
  border-radius: 999px; transition: width 0.5s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: 0 0 8px rgba(255,217,0,0.6);
}
.header-progress-label {
  display: flex; justify-content: space-between;
  font-size: 0.7rem; font-weight: 800; color: rgba(255,255,255,0.8);
  margin-bottom: 4px;
}

/* ── STATS STRIP ── */
.stats-strip {
  display: flex; gap: 0; border-bottom: 2px solid var(--border);
  background: var(--white);
}
.stat-pill {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  padding: 10px 8px; gap: 2px; border-right: 1px solid var(--border);
}
.stat-pill:last-child { border-right: none; }
.stat-val { font-size: 1.1rem; font-weight: 900; color: var(--text); }
.stat-lbl { font-size: 0.62rem; font-weight: 700; color: var(--text2); text-transform: uppercase; letter-spacing: 0.5px; }

/* ── CATEGORY TABS ── */
.cat-wrap {
  background: var(--white); border-bottom: 2px solid var(--border);
  overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch;
}
.cat-wrap::-webkit-scrollbar { display: none; }
.cat-list {
  display: flex; gap: 0; width: max-content; padding: 0 8px;
}
.cat-tab {
  padding: 12px 14px; font-family: 'Inter', sans-serif;
  font-size: 0.82rem; font-weight: 800; color: var(--text2);
  border: none; background: none; cursor: pointer;
  white-space: nowrap; border-bottom: 3px solid transparent;
  transition: all 0.15s; margin-bottom: -2px;
}
.cat-tab.active { color: var(--orange); border-bottom-color: var(--orange); }

/* ── GAME AREA ── */
.game-wrap {
  flex: 1; padding: 16px 14px;
  display: flex; flex-direction: column; gap: 14px;
}
.game-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
}
.col-head {
  font-size: 0.68rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 1px; text-align: center; margin-bottom: 6px;
}
.col-head.left { color: var(--orange); }
.col-head.right { color: var(--teal); }
.col-cards { display: flex; flex-direction: column; gap: 10px; }

/* ── CARDS ── */
.card {
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-size: 1rem; font-weight: 800;
  text-align: center; cursor: pointer;
  user-select: none;
  min-height: 72px; /* fixed height both sides */
  height: 72px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 2px; padding: 10px 10px;
  color: #fff; line-height: 1.2;
  word-break: break-word;
  transition: transform 0.1s, opacity 0.25s, box-shadow 0.1s;
  position: relative; overflow: hidden;
}
.card::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(255,255,255,0); transition: background 0.1s;
  border-radius: var(--radius);
  pointer-events: none;
}
.card:active::after { background: rgba(255,255,255,0.15); }

.card.src {
  background: var(--orange);
  box-shadow: 0 5px 0 var(--orange2), 0 6px 12px rgba(255,107,53,0.25);
}
.card.tgt {
  background: var(--teal);
  box-shadow: 0 5px 0 var(--teal2), 0 6px 12px rgba(28,176,246,0.25);
}
.card.selected {
  background: var(--yellow) !important;
  box-shadow: 0 5px 0 var(--yellow2), 0 6px 12px rgba(255,217,0,0.3) !important;
  color: #3C3C3C !important;
  transform: scale(1.05) translateY(-2px);
}
.card.correct {
  background: var(--green) !important;
  box-shadow: 0 5px 0 var(--green2) !important;
  animation: cardCorrect 0.4s ease forwards;
}
.card.wrong { animation: cardWrong 0.4s ease; }
.card.hidden {
  opacity: 0; pointer-events: none;
  transform: scale(0.75) translateY(8px);
}
.card:active:not(.hidden):not(.correct) {
  transform: scale(0.97) translateY(4px);
  box-shadow: 0 1px 0 var(--orange2) !important;
}
.card.tgt:active:not(.hidden):not(.correct) {
  box-shadow: 0 1px 0 var(--teal2) !important;
}

/* Difficulty indicators */


@keyframes cardCorrect {
  0%   { transform: scale(1.05); }
  40%  { transform: scale(1.12); }
  100% { transform: scale(0.8); opacity: 0; }
}
@keyframes cardWrong {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-10px); }
  40%     { transform: translateX(10px); }
  60%     { transform: translateX(-7px); }
  80%     { transform: translateX(7px); }
}

/* ── HEARTS ── */
.hearts-row {
  display: flex; justify-content: center; gap: 6px; margin: 4px 0;
}
.heart { font-size: 1.4rem; transition: transform 0.2s; }
.heart.lost { filter: grayscale(1); opacity: 0.3; }

/* ═══════════════════════════════
   CHECKPOINT QUIZ
═══════════════════════════════ */
#checkpoint-overlay {
  display: none; position: fixed; inset: 0; z-index: 85;
  background: var(--bg); overflow-y: auto;
  flex-direction: column; align-items: center;
  background-image: radial-gradient(circle at 20% 20%, #ffe0cc 0%, transparent 50%),
                    radial-gradient(circle at 80% 80%, #cce8ff 0%, transparent 50%);
}
#checkpoint-overlay.show { display: flex; }
.cp-header {
  width: 100%; background: linear-gradient(135deg, var(--teal), var(--teal2));
  padding: 28px 24px 24px; text-align: center;
}
.cp-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.8rem; color: #fff; margin-bottom: 5px;
}
.cp-sub { font-size: 0.85rem; color: rgba(255,255,255,0.85); font-weight: 700; }
.cp-prog-wrap {
  background: rgba(255,255,255,0.25); border-radius: 999px;
  height: 7px; margin: 12px 0 0; overflow: hidden;
}
.cp-prog-fill {
  height: 100%; background: var(--yellow);
  border-radius: 999px; transition: width 0.35s ease;
}
.cp-body { width: 100%; max-width: 420px; padding: 20px 20px 40px; }
.cp-counter {
  text-align: center; font-size: 0.75rem; font-weight: 800;
  color: var(--text2); margin-bottom: 16px;
  text-transform: uppercase; letter-spacing: 1px;
}
.cp-word-card {
  background: var(--orange); border-radius: var(--radius);
  padding: 24px 20px; text-align: center; margin-bottom: 16px;
  box-shadow: 0 5px 0 var(--orange2), 0 8px 20px rgba(255,107,53,0.25);
}
.cp-word-src { font-size: 1.5rem; font-weight: 900; color: #fff; margin-bottom: 4px; }
.cp-word-hint { font-size: 0.72rem; color: rgba(255,255,255,0.75); font-weight: 700; }
.cp-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 16px; }
.cp-opt {
  background: var(--white); border: 3px solid var(--border);
  border-radius: var(--radius); padding: 14px 10px;
  font-family: 'Inter', sans-serif; font-size: 0.9rem; font-weight: 800;
  color: var(--text); cursor: pointer; text-align: center;
  box-shadow: var(--shadow-sm); transition: all 0.12s;
  -webkit-tap-highlight-color: transparent;
}
.cp-opt:active { transform: translateY(2px); box-shadow: none; }
.cp-opt.correct { background: var(--green); border-color: var(--green2); color: #fff; box-shadow: 0 3px 0 var(--green2); }
.cp-opt.wrong   { background: var(--red);   border-color: var(--red2);   color: #fff; box-shadow: 0 3px 0 var(--red2); }
.cp-opt.disabled { pointer-events: none; opacity: 0.5; }
.cp-skip-btn {
  display: block; margin: 0 auto; background: none; border: none;
  color: var(--text2); font-family: 'Inter', sans-serif;
  font-size: 0.8rem; font-weight: 700; cursor: pointer;
  text-decoration: underline; padding: 6px;
}
/* Result screen */
.cp-result { text-align: center; padding: 10px 0; }
.cp-result-emoji { font-size: 4rem; margin-bottom: 12px; }
.cp-score-ring {
  display: inline-flex; flex-direction: column; align-items: center;
  justify-content: center;
  width: 100px; height: 100px; border-radius: 50%;
  border: 6px solid var(--teal); margin-bottom: 14px;
}
.cp-score-num { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 1.8rem; color: var(--teal); line-height: 1; }
.cp-score-lbl { font-size: 0.65rem; font-weight: 800; color: var(--text2); text-transform: uppercase; letter-spacing: 1px; }
.cp-result-msg { font-size: 1rem; font-weight: 700; color: var(--text2); margin-bottom: 24px; }
.cp-done-btn { max-width: 260px; margin: 0 auto; }
#placement-overlay {
  display: none; position: fixed; inset: 0; z-index: 80;
  background: var(--bg); overflow-y: auto;
  flex-direction: column; align-items: center;
  padding: 0 0 40px;
}
#placement-overlay.show { display: flex; }
.pl-hero {
  width: 100%; background: linear-gradient(135deg, #FF6B35, #FF4500);
  padding: 32px 24px 28px; text-align: center;
}
.pl-hero-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.8rem; color: #fff; margin-bottom: 6px;
}
.pl-hero-sub { font-size: 0.88rem; color: rgba(255,255,255,0.85); font-weight: 700; }
.pl-prog-wrap {
  background: rgba(255,255,255,0.25); border-radius: 999px;
  height: 8px; margin: 14px 0 0; overflow: hidden;
}
.pl-prog-fill {
  height: 100%; background: var(--yellow);
  border-radius: 999px; transition: width 0.3s ease;
}
.pl-body { width: 100%; max-width: 420px; padding: 24px 20px 0; }
.pl-counter {
  text-align: center; font-size: 0.78rem; font-weight: 800;
  color: var(--text2); margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px;
}
.pl-word-card {
  background: var(--teal); border-radius: var(--radius);
  padding: 28px 20px; text-align: center; margin-bottom: 20px;
  box-shadow: 0 5px 0 var(--teal2), 0 8px 20px rgba(28,176,246,0.3);
}
.pl-word-text { font-size: 1.6rem; font-weight: 900; color: #fff; margin-bottom: 4px; }
.pl-word-hint { font-size: 0.75rem; color: rgba(255,255,255,0.75); font-weight: 700; }
.pl-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px; }
.pl-opt {
  background: var(--white); border: 3px solid var(--border);
  border-radius: var(--radius); padding: 14px 10px;
  font-family: 'Inter', sans-serif; font-size: 0.92rem; font-weight: 800;
  color: var(--text); cursor: pointer; text-align: center;
  box-shadow: var(--shadow-sm); transition: all 0.12s;
}
.pl-opt:active { transform: translateY(2px); box-shadow: none; }
.pl-opt.correct { background: var(--green); border-color: var(--green2); color: #fff; box-shadow: 0 3px 0 var(--green2); }
.pl-opt.wrong   { background: var(--red);   border-color: var(--red2);   color: #fff; box-shadow: 0 3px 0 var(--red2); }
.pl-opt.disabled { pointer-events: none; opacity: 0.5; }
.pl-skip {
  background: none; border: none; color: var(--text2);
  font-family: 'Inter', sans-serif; font-size: 0.82rem; font-weight: 700;
  cursor: pointer; text-decoration: underline;
  display: block; margin: 0 auto; padding: 8px;
}
/* placement result */
.pl-result {
  text-align: center; padding: 12px 0;
}
.pl-result-emoji { font-size: 5rem; margin-bottom: 10px; }
.pl-result-title { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 1.5rem; color: var(--text); margin-bottom: 8px; }
.pl-level-chip {
  display: inline-block; padding: 10px 28px;
  background: var(--orange); color: #fff; border-radius: 999px;
  font-size: 1rem; font-weight: 800;
  box-shadow: 0 4px 0 var(--orange2); margin: 10px 0 14px;
}
.pl-result-sub { font-size: 0.88rem; color: var(--text2); font-weight: 600; margin-bottom: 24px; line-height: 1.5; }

/* ═══════════════════════════════
   ROUND COMPLETE OVERLAY
═══════════════════════════════ */
#round-overlay {
  display: none; position: fixed; inset: 0; z-index: 90;
  background: rgba(247,247,247,0.97);
  flex-direction: column; align-items: center; justify-content: center;
  padding: 24px; text-align: center; gap: 20px;
  animation: fadeUp 0.25s ease;
}
#round-overlay.show { display: flex; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.round-emoji { font-size: 5rem; margin-bottom: 8px; }
.round-stars { display: flex; gap: 6px; justify-content: center; font-size: 2.4rem; margin-bottom: 12px; }
.round-title { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 2.2rem; color: var(--text); margin-bottom: 6px; }
.round-sub { font-size: 0.95rem; color: var(--text2); font-weight: 600; margin-bottom: 4px; }
.round-stats { font-size: 0.8rem; color: #bbb; font-weight: 700; margin-bottom: 20px; }

.hard-recap {
  width: 100%; max-width: 340px; margin-bottom: 20px;
}
.hard-recap-title {
  font-size: 0.72rem; font-weight: 800; color: var(--text2);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px;
}
.hard-word-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 9px 14px; border-radius: var(--radius-sm);
  background: var(--white); border: 2px solid var(--border);
  margin-bottom: 6px; font-size: 0.88rem; font-weight: 700;
}
.hw-src { color: var(--orange); }
.hw-tgt { color: var(--teal); }
.hw-cnt {
  font-size: 0.75rem; background: #FFE9E9; color: var(--red);
  border-radius: 999px; padding: 2px 9px; font-weight: 800;
}

.btn-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.btn-next-round {
  background: var(--green); color: #fff;
  border: none; border-radius: var(--radius);
  padding: 16px 32px; font-family: 'Inter', sans-serif;
  font-size: 1rem; font-weight: 800; cursor: pointer;
  box-shadow: 0 5px 0 var(--green2); letter-spacing: 0.3px;
  transition: transform 0.1s, box-shadow 0.1s;
}
.btn-next-round:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--green2); }
.btn-drill-mistakes {
  background: var(--white); color: var(--red);
  border: 3px solid var(--red); border-radius: var(--radius);
  padding: 13px 20px; font-family: 'Inter', sans-serif;
  font-size: 0.9rem; font-weight: 800; cursor: pointer;
  box-shadow: 0 3px 0 var(--red2);
  transition: transform 0.1s, box-shadow 0.1s;
}
.btn-drill-mistakes:active { transform: translateY(3px); box-shadow: 0 0 0 var(--red2); }

/* btn-skip-inline in header */
.btn-skip-inline {
  background: rgba(255,255,255,0.15); border: 1.5px solid rgba(255,255,255,0.3);
  border-radius: 999px; padding: 2px 10px;
  font-family: 'Inter', sans-serif; font-size: 0.7rem;
  font-weight: 800; color: rgba(255,255,255,0.85); cursor: pointer;
  transition: background 0.15s;
}
.btn-skip-inline:active { background: rgba(255,255,255,0.3); }

/* Mistakes tab styling */
.tab-mistakes { color: var(--red) !important; }
.tab-mistakes.active { color: #fff !important; background: var(--red) !important; border-bottom-color: var(--red) !important; }
.app-footer {
  display: flex; flex-direction: row; align-items: center; justify-content: space-between;
  gap: 8px; padding: 10px 16px 10px;
  border-top: 2px solid var(--border);
  background: var(--white);
  position: sticky; bottom: 0; z-index: 10;
  flex-shrink: 0;
}
.btn-reset-landing {
  background: none; border: 2px solid var(--border);
  border-radius: 999px; padding: 7px 14px;
  font-family: 'Inter', sans-serif; font-size: 0.75rem;
  font-weight: 800; color: var(--text2); cursor: pointer;
  transition: all 0.15s;
}
.btn-reset-landing:active { background: var(--border); }
.footer-kofi {
  font-size: 0.78rem; font-weight: 800;
  color: var(--orange); text-decoration: none;
}
/* Audio mode cards */
.audio-card {
  cursor: pointer;
  background: var(--teal) !important;
  box-shadow: 0 5px 0 var(--teal2), 0 6px 12px rgba(28,176,246,0.25) !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  gap: 4px !important;
  /* same height as regular cards */
  height: 72px !important;
  min-height: 72px !important;
  overflow: visible !important;
}
.audio-card:active { transform: translateY(3px); box-shadow: 0 2px 0 var(--teal2) !important; }

.audio-speaker-btn {
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255,255,255,0.18);
  border: 2px solid rgba(255,255,255,0.45);
  display: flex; align-items: center; justify-content: center;
  pointer-events: none; flex-shrink: 0;
  transition: transform 0.15s, background 0.15s;
}
.audio-card.selected .audio-speaker-btn { background: rgba(255,255,255,0.32); transform: scale(1.08); }
.audio-card.playing .audio-speaker-btn  { animation: pulse-ring 0.65s ease-out; }

@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(255,255,255,0.55); }
  100% { box-shadow: 0 0 0 14px rgba(255,255,255,0); }
}

/* Revealed word – below speaker, in normal flow */
.audio-hint-text {
  font-size: 0.7rem; font-weight: 800;
  color: rgba(255,255,255,0.92);
  text-align: center; line-height: 1.2;
  padding: 0 6px; pointer-events: none;
}

/* ABC pill – absolute bottom-right corner */
.audio-hint-toggle {
  position: absolute; bottom: 5px; right: 6px;
  background: rgba(0,0,0,0.18); border: none;
  border-radius: 5px; padding: 2px 6px;
  font-size: 0.58rem; font-weight: 900;
  color: rgba(255,255,255,0.85);
  cursor: pointer; font-family: inherit; letter-spacing: 0.4px;
  -webkit-tap-highlight-color: transparent; z-index: 3;
}
.audio-hint-toggle:active { background: rgba(0,0,0,0.35); }
.card-word { line-height: 1.2; font-size: 0.95rem; }

#confetti { position: fixed; inset: 0; pointer-events: none; z-index: 9; }

/* ── STATS MODAL ── */
.stats-period-btn {
  flex: 1; padding: 8px 4px; border: 2.5px solid var(--border);
  border-radius: var(--radius-sm); background: var(--white);
  font-family: 'Inter', sans-serif; font-size: 0.8rem; font-weight: 800;
  color: var(--text2); cursor: pointer; transition: all 0.12s;
}
.stats-period-btn.active {
  border-color: var(--orange); background: #fff5f1; color: var(--orange);
}
.stats-section-head {
  font-size: 0.68rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 1.2px; color: var(--text2); margin-bottom: 10px;
}
.stats-cat-row {
  display: flex; align-items: center; gap: 10px; margin-bottom: 8px;
}
.stats-cat-name {
  font-size: 0.78rem; font-weight: 700; color: var(--text);
  min-width: 90px; flex-shrink: 0;
}
.stats-cat-bar-wrap {
  flex: 1; height: 8px; background: var(--border); border-radius: 999px; overflow: hidden;
}
.stats-cat-bar { height: 100%; background: var(--green); border-radius: 999px; transition: width 0.4s; }
.stats-cat-count {
  font-size: 0.72rem; font-weight: 800; color: var(--text2);
  min-width: 36px; text-align: right; flex-shrink: 0;
}
.stats-hard-word {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; background: var(--bg); border-radius: var(--radius-sm);
  margin-bottom: 6px;
}
.stats-hard-pair { font-size: 0.82rem; font-weight: 700; color: var(--text); }
.stats-hard-pair span { color: var(--text2); margin: 0 6px; }
.stats-hard-dots { font-size: 0.75rem; letter-spacing: 1px; }
.stats-level-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px;
}
.stats-level-btn {
  padding: 10px 4px; border: 2.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--white); font-family: 'Inter', sans-serif;
  font-size: 0.85rem; font-weight: 900; color: var(--text2); cursor: pointer;
  transition: all 0.12s; text-align: center; line-height: 1.3;
}
.stats-level-btn.active {
  border-color: var(--orange); background: var(--orange); color: #fff;
  box-shadow: 0 3px 0 var(--orange2);
}
.stats-level-btn:active { transform: translateY(2px); box-shadow: none; }
.stats-level-current {
  font-size: 0.75rem; font-weight: 700; color: var(--text2);
  text-align: center; margin-top: 8px;
}
/* Heatmap */
.heatmap-wrap { overflow-x: auto; padding-bottom: 4px; }
.heatmap-grid {
  display: grid; grid-auto-flow: column;
  grid-template-rows: repeat(7, 10px);
  gap: 3px; width: max-content;
}
.hm-cell {
  width: 10px; height: 10px; border-radius: 2px;
  background: var(--border); cursor: default;
}

/* ── CEFR CHIPS ── */
.cefr-chips-row { display:flex; gap:6px; margin-bottom:10px; }
.cefr-chip-btn {
  flex:1; padding:5px 4px; border-radius:20px;
  font-family:'Inter',sans-serif; font-size:0.75rem; font-weight:900;
  border:2px solid rgba(255,255,255,0.3); background:rgba(255,255,255,0.12);
  color:rgba(255,255,255,0.8); cursor:pointer; text-align:center;
  transition:all 0.15s; letter-spacing:0.3px;
}
.cefr-chip-btn.active {
  background:rgba(255,255,255,0.95); color:var(--orange);
  border-color:transparent; box-shadow:0 2px 0 rgba(0,0,0,0.1);
}
.cefr-chip-btn.locked { opacity:0.5; }
.cefr-chip-btn:active { opacity:0.7; }

/* ── PHRASE / SENTENCE EXERCISE ── */
.quiz-panel {
  padding: 4px 0 8px; display: flex; flex-direction: column; gap: 16px;
}
.quiz-type-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.65rem; font-weight: 900; text-transform: uppercase;
  letter-spacing: 1.2px; padding: 3px 10px; border-radius: 999px;
}
.quiz-prompt {
  text-align: center; padding: 4px 8px;
}
.quiz-main-text {
  font-size: 1.35rem; font-weight: 900; color: var(--text);
  line-height: 1.3; margin-bottom: 6px;
}
.quiz-main-text .blank {
  display: inline-block; min-width: 80px; border-bottom: 3px solid var(--orange);
  color: var(--orange); font-style: italic;
}
.quiz-hint-text {
  font-size: 0.85rem; font-weight: 600; color: var(--text2); line-height: 1.4;
}
.quiz-options {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
}
.quiz-opt {
  background: var(--white); border: 2.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 10px;
  font-family: 'Inter', sans-serif; font-size: 0.88rem; font-weight: 800;
  color: var(--text); cursor: pointer; text-align: center;
  box-shadow: var(--shadow-sm); transition: all 0.1s; line-height: 1.3;
}
.quiz-opt:active { transform: translateY(2px); box-shadow: none; }
.quiz-opt.correct { background: var(--green); border-color: var(--green2); color: #fff; box-shadow: 0 3px 0 var(--green2); }
.quiz-opt.wrong   { background: var(--red);   border-color: var(--red2);   color: #fff; box-shadow: 0 3px 0 var(--red2); }
.quiz-opt.disabled { pointer-events: none; opacity: 0.55; }
.topic-row {
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 14px; border-radius:var(--radius-sm);
  background:var(--white); border:2px solid var(--border);
  margin-bottom:8px; cursor:pointer; transition:all 0.12s;
}
.topic-row:active { border-color:var(--orange); background:#fff5f1; }
.topic-row.active { border-color:var(--orange); background:#fff5f1; }