/* ═══════════════════════════════════════════════════════
   ŽINOK — Styles
   ═══════════════════════════════════════════════════════ */

/* ─── Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── Variables ─────────────────────────────────────── */
:root {
  --bg:            #0d1117;
  --surface:       #161b22;
  --card:          #21262d;
  --card-hover:    #282e38;
  --border:        #30363d;
  --accent:        #7c6df0;
  --accent-hover:  #6d5de0;
  --accent-light:  rgba(124, 109, 240, 0.12);
  --text:          #e6edf3;
  --text-2:        #8b949e;
  --text-3:        #6e7681;
  --success:       #3fb950;
  --warning:       #d29922;
  --danger:        #f85149;
  --radius:        14px;
  --radius-sm:     9px;
  --font:          'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --safe-top:      env(safe-area-inset-top, 0px);
  --safe-bottom:   env(safe-area-inset-bottom, 0px);
}

/* ─── Base ───────────────────────────────────────────── */
html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
}

body {
  font-family: var(--font);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* ─── Views ──────────────────────────────────────────── */
.view {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--bg);
  visibility: hidden;
  opacity: 0;
  transform: translateX(24px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  will-change: transform, opacity;
}

.view.active {
  visibility: visible;
  opacity: 1;
  transform: translateX(0);
}

.view.slide-back {
  transform: translateX(-24px);
}

/* ─── Scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ─── Buttons ────────────────────────────────────────── */
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font);
  -webkit-tap-highlight-color: transparent;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.15s, opacity 0.15s, transform 0.1s;
  cursor: pointer;
  border: none;
  font-family: var(--font);
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.97); }

.btn-primary  { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--card-hover); }

.btn-outline {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
}
.btn-outline:hover { background: var(--card); }

.btn-full { width: 100%; }

.btn-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  border-radius: 50%;
  transition: background 0.15s;
}
.btn-icon:hover { background: var(--card); }

.btn-back {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  border-radius: 50%;
  transition: background 0.15s;
  flex-shrink: 0;
}
.btn-back:hover { background: var(--card); }
.btn-back:active { background: var(--card-hover); transform: scale(0.95); }

.btn-google {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 500;
}
.btn-google:hover { background: var(--card-hover); }

.btn-pay { font-size: 16px; font-weight: 600; padding: 16px 20px; }

/* ─── Nav Header ─────────────────────────────────────── */
.nav-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: calc(var(--safe-top) + 12px) 12px 12px;
  background: rgba(13, 17, 23, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-title {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-spacer { width: 38px; flex-shrink: 0; }

/* ─── Level pill ─────────────────────────────────────── */
.level-pill {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 100px;
  background: var(--accent-light);
  color: var(--accent);
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════════════
   AUTH VIEW
   ═══════════════════════════════════════════════════════ */
.auth-container {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px calc(var(--safe-bottom) + 40px);
  max-width: 400px;
  margin: 0 auto;
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.logo-text {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -1.5px;
  color: var(--text);
  line-height: 1;
}

.logo-flag { font-size: 22px; line-height: 1; }

.auth-tagline {
  color: var(--text-3);
  font-size: 14px;
  margin-bottom: 36px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}

.auth-tabs {
  display: flex;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 4px;
  width: 100%;
  margin-bottom: 24px;
  gap: 4px;
}

.auth-tab {
  flex: 1;
  padding: 9px;
  border-radius: calc(var(--radius) - 4px);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-3);
  transition: background 0.15s, color 0.15s;
}
.auth-tab.active { background: var(--card); color: var(--text); }

.auth-form { width: 100%; display: none; flex-direction: column; gap: 16px; }
.auth-form.active { display: flex; }

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
}

.form-group input {
  padding: 13px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 15px;
  font-family: var(--font);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
  width: 100%;
}
.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}
.form-group input::placeholder { color: var(--text-3); }

.auth-forgot, .auth-terms {
  font-size: 13px;
  color: var(--text-3);
  text-align: center;
  line-height: 1.5;
}
.auth-forgot a { color: var(--accent); text-decoration: none; }

.auth-divider {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--text-3);
  font-size: 13px;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.auth-error {
  color: var(--danger);
  font-size: 13px;
  text-align: center;
  min-height: 18px;
  margin-top: 4px;
}

/* ═══════════════════════════════════════════════════════
   HOME VIEW
   ═══════════════════════════════════════════════════════ */
.home-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(var(--safe-top) + 16px) 20px 16px;
  background: rgba(13, 17, 23, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.home-logo { display: flex; align-items: center; gap: 8px; }
.home-logo .logo-text { font-size: 26px; font-weight: 700; letter-spacing: -0.8px; }
.home-logo .logo-flag { font-size: 16px; }

.home-main {
  padding: 28px 20px calc(var(--safe-bottom) + 40px);
}

.home-greeting {
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 16px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.section-grid { display: flex; flex-direction: column; gap: 10px; }

.section-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 16px;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  color: var(--text);
  width: 100%;
  text-align: left;
  transition: background 0.15s, border-color 0.15s, transform 0.12s;
}
.section-card:active { transform: scale(0.98); background: var(--card-hover); }
.section-card:hover { border-color: var(--text-3); }

.section-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.section-icon--vocab    { background: rgba(124,109,240,0.14); color: #7c6df0; }
.section-icon--grammar  { background: rgba(56,189,248,0.12);  color: #38bdf8; }
.section-icon--reading  { background: rgba(63,185,80,0.12);   color: #3fb950; }
.section-icon--listening{ background: rgba(240,136,62,0.12);  color: #f0883e; }

.section-info { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.section-name { font-size: 17px; font-weight: 600; line-height: 1.2; }
.section-name-lt { font-size: 13px; color: var(--text-3); font-weight: 400; }
.section-arrow { color: var(--text-3); flex-shrink: 0; }

/* ═══════════════════════════════════════════════════════
   LEVEL VIEW
   ═══════════════════════════════════════════════════════ */
.level-main {
  padding: 32px 20px calc(var(--safe-bottom) + 40px);
}

.level-prompt {
  font-size: 13px;
  color: var(--text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.level-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.level-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 28px 16px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: background 0.15s, border-color 0.15s, transform 0.12s;
  position: relative;
}
.level-card:active { transform: scale(0.97); background: var(--card-hover); }
.level-card:hover { border-color: var(--text-3); }

.level-badge { font-size: 30px; font-weight: 700; letter-spacing: -0.5px; line-height: 1; }
.level-badge--a1 { color: #3fb950; }
.level-badge--a2 { color: #38bdf8; }
.level-badge--b1 { color: #d29922; }
.level-badge--b2 { color: #f0883e; }

.level-label { font-size: 13px; color: var(--text-2); font-weight: 400; text-align: center; }

.free-badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #3fb950;
  background: rgba(63,185,80,0.12);
  padding: 3px 9px;
  border-radius: 100px;
}

/* ═══════════════════════════════════════════════════════
   SHARED LIST STYLES
   ═══════════════════════════════════════════════════════ */
.list-main {
  padding: 16px 20px calc(var(--safe-bottom) + 40px);
}

.card-list { display: flex; flex-direction: column; gap: 10px; }

.list-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  width: 100%;
  text-align: left;
  transition: background 0.15s, transform 0.12s;
}
.list-card:active { transform: scale(0.98); background: var(--card-hover); }
.list-card:hover { border-color: var(--text-3); }

.list-card-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}
.accent-icon { background: var(--accent-light); color: var(--accent); }

.list-card-info { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.list-card-name { font-size: 15px; font-weight: 500; }
.list-card-sub  { font-size: 13px; color: var(--text-3); }

.topic-list { display: flex; flex-direction: column; gap: 8px; }

.topic-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  width: 100%;
  text-align: left;
  transition: background 0.15s, transform 0.12s;
  cursor: pointer;
}
.topic-item:active { transform: scale(0.98); background: var(--card-hover); }
.topic-item:hover { border-color: var(--text-3); }

.topic-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--surface);
  color: var(--text-3);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.topic-info { flex: 1; }
.topic-name { font-size: 15px; font-weight: 500; display: block; margin-bottom: 2px; }
.topic-sub  { font-size: 13px; color: var(--text-3); display: block; }

.topic-check { color: var(--text-3); flex-shrink: 0; }
.topic-item.completed .topic-check { color: var(--success); }
.topic-item.completed .topic-num { background: rgba(63,185,80,0.12); color: var(--success); }

/* ═══════════════════════════════════════════════════════
   FLASHCARD VIEW
   ═══════════════════════════════════════════════════════ */
.flashcard-main {
  padding: 20px 20px calc(var(--safe-bottom) + 24px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: calc(100svh - 65px);
}

.flashcard-progress {
  display: flex;
  align-items: center;
  gap: 12px;
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--surface);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.4s ease;
  width: 0%;
}

.progress-label {
  font-size: 13px;
  color: var(--text-3);
  white-space: nowrap;
  font-weight: 500;
  min-width: 36px;
  text-align: right;
}

.flashcard-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flashcard {
  width: 100%;
  max-width: 420px;
  min-height: 200px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 28px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}
.flashcard:active { transform: scale(0.98); }
.flashcard:hover { border-color: var(--text-3); }

.flashcard-front, .flashcard-back {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.flashcard-back { display: none; }
.flashcard.revealed .flashcard-front { display: none; }
.flashcard.revealed .flashcard-back  { display: flex; }

.flashcard-word {
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--text);
  line-height: 1.2;
}

.flashcard-hint {
  font-size: 13px;
  color: var(--text-3);
  font-weight: 400;
}

.flashcard-translation {
  font-size: 28px;
  font-weight: 400;
  color: var(--text-2);
  line-height: 1.2;
}

.flashcard-word-small {
  font-size: 15px;
  color: var(--text-3);
  font-weight: 400;
}

.flashcard-actions { display: flex; flex-direction: column; gap: 10px; }

.srs-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  display: none;
}

.btn-srs {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 14px 8px;
  border-radius: var(--radius);
  gap: 4px;
  transition: opacity 0.15s, transform 0.1s;
  color: #fff;
  border: none;
  cursor: pointer;
  font-family: var(--font);
}
.btn-srs:active { transform: scale(0.96); }

.btn-difficult { background: var(--danger); }
.btn-medium    { background: var(--warning); color: #1a1a1a; }
.btn-easy      { background: var(--success); }

.srs-label    { font-size: 14px; font-weight: 600; }
.srs-interval { font-size: 11px; opacity: 0.85; font-weight: 400; }

/* ═══════════════════════════════════════════════════════
   CONTENT VIEWS (Grammar topic, Reading text)
   ═══════════════════════════════════════════════════════ */
.content-main {
  padding: 24px 20px calc(var(--safe-bottom) + 60px);
}

/* Grammar tables */
.grammar-table-wrap { overflow-x: auto; margin: 16px 0; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.grammar-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.grammar-table th {
  background: var(--surface);
  color: var(--text-2);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.grammar-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.grammar-table tr:last-child td { border-bottom: none; }
.grammar-table tr:hover td { background: var(--surface); }

/* Grammar content typography */
.content-main p  { font-size: 15px; line-height: 1.65; color: var(--text-2); margin-bottom: 14px; }
.content-main ul { padding-left: 20px; margin-bottom: 14px; }
.content-main li { font-size: 15px; line-height: 1.7; color: var(--text-2); margin-bottom: 4px; }
.content-main strong { color: var(--text); font-weight: 600; }
.content-main em { color: var(--accent); font-style: normal; }

.g-intro {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-2);
  margin-bottom: 20px;
}

.g-intro-en {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-3);
  margin-top: -12px;
  margin-bottom: 20px;
  padding-left: 12px;
  border-left: 2px solid var(--border);
}

.g-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 28px 0 10px;
}

.g-rule {
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
  margin: 14px 0;
}

.g-note {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  margin: 14px 0;
}

.g-note-en {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-3);
  font-style: italic;
}

.g-examples {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 14px 0;
}

.g-example {
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.g-lt {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}

.g-en {
  font-size: 13px;
  color: var(--text-3);
}

/* Reading text */
.reading-text-body {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 24px;
}
.reading-word {
  cursor: pointer;
  border-radius: 3px;
  padding: 1px 2px;
  transition: background 0.15s;
}
.reading-word:hover, .reading-word.tapped { background: var(--accent-light); color: var(--accent); }

.translation-popup {
  position: fixed;
  bottom: calc(var(--safe-bottom) + 80px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  z-index: 100;
  max-width: calc(100vw - 40px);
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}
.translation-popup.visible { opacity: 1; }
.popup-lt {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}
.popup-en {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-2);
  margin-top: 2px;
}

/* ═══════════════════════════════════════════════════════
   ACCOUNT VIEW
   ═══════════════════════════════════════════════════════ */
.account-main {
  padding: 24px 20px calc(var(--safe-bottom) + 40px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.account-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.account-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.account-email { font-size: 15px; font-weight: 500; }
.account-status { font-size: 13px; color: var(--text-3); margin-top: 2px; }

.account-section { display: flex; flex-direction: column; gap: 12px; }

.section-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
}

.progress-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}

.stat-value { font-size: 22px; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 12px; color: var(--text-3); line-height: 1.3; }

.account-sub-info {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 14px;
  color: var(--text-2);
}

/* ═══════════════════════════════════════════════════════
   PAYWALL VIEW
   ═══════════════════════════════════════════════════════ */
.paywall-main {
  padding: 32px 20px calc(var(--safe-bottom) + 40px);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.paywall-hero h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-bottom: 8px;
}
.paywall-hero p { font-size: 15px; color: var(--text-2); line-height: 1.5; }

.paywall-options { display: flex; flex-direction: column; gap: 10px; }

.paywall-option {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-align: left;
  color: var(--text);
  transition: border-color 0.15s, background 0.15s;
  cursor: pointer;
  width: 100%;
  font-family: var(--font);
}
.paywall-option.active { border-color: var(--accent); background: var(--accent-light); }
.paywall-option:hover { border-color: var(--text-2); }
.paywall-option.active:hover { border-color: var(--accent); }

.paywall-option-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.paywall-plan-name { font-size: 15px; font-weight: 600; }

.paywall-badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--accent);
  color: #fff;
  padding: 3px 9px;
  border-radius: 100px;
}

.paywall-price { font-size: 26px; font-weight: 700; }
.paywall-price span { font-size: 16px; font-weight: 400; color: var(--text-2); }
.paywall-price-sub { font-size: 13px; color: var(--text-3); margin-top: 4px; }
.paywall-terms { font-size: 13px; color: var(--text-3); text-align: center; }

/* ═══════════════════════════════════════════════════════
   LEVEL PILL BUTTON (in section headers)
   ═══════════════════════════════════════════════════════ */
.btn-level-pill {
  font-size: 12px;
  font-weight: 700;
  padding: 5px 11px;
  border-radius: 100px;
  background: var(--accent-light);
  color: var(--accent);
  letter-spacing: 0.04em;
  transition: background 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}
.btn-level-pill::after {
  content: ' ▾';
  font-size: 10px;
  opacity: 0.7;
}
.btn-level-pill:hover { background: rgba(124,109,240,0.22); }

/* ═══════════════════════════════════════════════════════
   LEVEL PICKER SHEET
   ═══════════════════════════════════════════════════════ */
.sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 200;
  display: flex;
  align-items: flex-end;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.sheet-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.sheet {
  background: var(--surface);
  border-radius: 20px 20px 0 0;
  padding: 12px 20px calc(var(--safe-bottom) + 36px);
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  transform: translateY(100%);
  transition: transform 0.32s cubic-bezier(0.32, 0.72, 0, 1);
  border-top: 1px solid var(--border);
}
.sheet-overlay.open .sheet { transform: translateY(0); }

.sheet-handle {
  width: 36px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 0 auto 20px;
}

.sheet-title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.3px;
}

.sheet-sub {
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 20px;
}

/* ═══════════════════════════════════════════════════════
   TOAST
   ═══════════════════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: calc(var(--safe-bottom) + 24px);
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 20px;
  border-radius: 100px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  white-space: nowrap;
  z-index: 999;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ═══════════════════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════════════════ */
.empty-state {
  padding: 48px 20px;
  text-align: center;
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.6;
}
.empty-state-icon {
  font-size: 32px;
  margin-bottom: 12px;
  opacity: 0.5;
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — wider screens
   ═══════════════════════════════════════════════════════ */
@media (min-width: 480px) {
  #app {
    max-width: 480px;
    margin: 0 auto;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }
}

/* ── Reading section ──────────────────────────────────── */
.reading-body {
  margin-bottom: 32px;
}
.reading-paragraph {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  margin-bottom: 12px;
}
.reading-section {
  margin-bottom: 32px;
}
.reading-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 12px;
}
.reading-dict {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.reading-dict-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 8px 12px;
  background: var(--surface);
  border-radius: var(--radius-sm);
}
.reading-dict-lt {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}
.reading-dict-en {
  font-size: 14px;
  color: var(--text-3);
}
.reading-questions {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
}
.reading-questions li {
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-2);
}

/* ─── Listening cards ───────────────────────────────── */
.listening-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  transition: background 0.15s, transform 0.12s, border-color 0.15s;
  cursor: pointer;
  margin-bottom: 8px;
}
.listening-card:hover  { border-color: #f0883e; background: rgba(240,136,62,0.06); }
.listening-card:active { transform: scale(0.98); }

.listening-num {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(240,136,62,0.12);
  color: #f0883e;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.listening-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}
.listening-title    { font-size: 15px; font-weight: 600; line-height: 1.3; }
.listening-title-lt { font-size: 13px; color: #f0883e; font-style: italic; }
.listening-channel  { font-size: 12px; color: var(--text-3); margin-top: 2px; }
.listening-desc     { font-size: 13px; color: var(--text-2); margin-top: 3px; line-height: 1.4; }

.listening-ext { color: var(--text-3); flex-shrink: 0; margin-top: 4px; }
.listening-card:hover .listening-ext { color: #f0883e; }

/* ─── Grammar Level Quiz button ────────────────────── */
.level-quiz-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 14px 16px;
  background: var(--surface);
  border: 1.5px solid var(--accent, #5c6bc0);
  border-radius: var(--radius);
  cursor: pointer;
  margin-top: 12px;
  color: var(--text);
}
.level-quiz-btn:hover {
  background: var(--surface-2);
}
.level-quiz-icon {
  font-size: 22px;
  width: 36px;
  text-align: center;
  flex-shrink: 0;
}
.level-quiz-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}
.level-quiz-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.level-quiz-sub {
  font-size: 12px;
  color: var(--text-3);
}
.lq-intro {
  font-size: 14px;
  color: var(--text-3);
  margin-bottom: 28px;
}

/* ─── Grammar Exercises ─────────────────────────────── */
.ex-section {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.ex-heading {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 28px;
}
.ex-block {
  margin-bottom: 36px;
}
.ex-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 12px;
}

/* Reveal items */
.ex-reveal {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.ex-reveal:last-child { border-bottom: none; }
.ex-q {
  font-size: 14px;
  color: var(--text);
  margin: 0 0 8px;
}

/* Text-input variant */
.ex-input-row {
  display: flex;
  gap: 8px;
}
.ex-input {
  flex: 1;
  min-width: 0;
  padding: 8px 12px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  font-family: inherit;
}
.ex-input:focus {
  outline: none;
  border-color: var(--text-3);
}
.ex-input--correct { border-color: #2d6a4f !important; color: #74c69d; }
.ex-input--wrong   { border-color: #9b2335 !important; }
.ex-input:disabled { opacity: 0.8; }
.ex-check-btn {
  flex-shrink: 0;
  padding: 8px 16px;
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  white-space: nowrap;
}
.ex-check-btn:hover:not(:disabled) { border-color: var(--text-3); }
.ex-check-btn:disabled { opacity: 0.4; cursor: default; }
.ex-input-result {
  font-size: 12px;
  margin-top: 6px;
  line-height: 1.5;
}
.ex-input-result--correct { color: #74c69d; }
.ex-input-result--wrong   { color: var(--text-2); }
.ex-correct-lbl { color: var(--text-3); margin-right: 2px; }

/* Reveal-button variant (long / multi-line answers) */
.ex-btn-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}
.ex-reveal-btn {
  flex-shrink: 0;
  padding: 5px 12px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-3);
  cursor: pointer;
  white-space: nowrap;
}
.ex-reveal-btn:hover:not(:disabled) { background: var(--surface-2); }
.ex-reveal-btn--done { border-color: #2d6a4f; color: #74c69d; }
.ex-a {
  font-size: 14px;
  font-weight: 500;
  color: #74c69d;
  flex: 1;
  line-height: 1.5;
}

/* True / False */
.ex-tf {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.ex-tf:last-child { border-bottom: none; }
.ex-tf-q {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 8px;
}
.ex-tf-btns {
  display: flex;
  gap: 8px;
}
.ex-tf-btn {
  padding: 6px 20px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
}
.ex-tf-btn:hover:not(:disabled) {
  background: var(--surface-2);
}
.ex-tf-btn--correct {
  background: rgba(45,106,79,0.2) !important;
  border-color: #2d6a4f !important;
  color: #74c69d !important;
}
.ex-tf-btn--wrong {
  background: rgba(106,45,45,0.2) !important;
  border-color: #9b2335 !important;
  color: #f08080 !important;
}
.ex-tf-result {
  font-size: 12px;
  margin-top: 6px;
}
.ex-tf-result--correct { color: #74c69d; }
.ex-tf-result--wrong   { color: #f08080; }

/* Exercise MCQ */
.ex-mcq {
  margin-bottom: 20px;
}
.ex-mcq-q {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 8px;
}
.ex-mcq-opts {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ex-mcq-btn {
  text-align: left;
  padding: 8px 12px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
}
.ex-mcq-btn:hover:not(:disabled) {
  background: var(--surface-2);
}

/* ─── Grammar Quiz ──────────────────────────────────── */
.quiz-section {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.quiz-heading {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 24px;
}
.quiz-question {
  margin-bottom: 28px;
}
.quiz-q {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.5;
}
.quiz-num {
  color: var(--text-3);
  font-weight: 400;
}
.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.quiz-opt {
  text-align: left;
  padding: 10px 14px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.quiz-opt:hover:not(:disabled) {
  background: var(--surface-2);
  border-color: var(--text-3);
}
.quiz-opt:disabled {
  cursor: default;
}
.quiz-opt--correct {
  background: rgba(45, 106, 79, 0.2) !important;
  border-color: #2d6a4f !important;
  color: #74c69d !important;
}
.quiz-opt--wrong {
  background: rgba(106, 45, 45, 0.2) !important;
  border-color: #9b2335 !important;
  color: #f08080 !important;
}
.quiz-score {
  margin-top: 8px;
  padding: 14px 18px;
  background: var(--surface);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 12px;
}
.quiz-score-num {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.quiz-score-msg {
  font-size: 14px;
  color: var(--text-2);
}

/* ─── Word-tag exercise ─────────────────────────────── */
.ex-wt-instruction {
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 12px;
  line-height: 1.5;
}

.ex-wt-words {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.ex-wt-chip {
  padding: 7px 14px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.ex-wt-chip:hover:not(:disabled) {
  border-color: var(--text-3);
}
.ex-wt-chip--selected {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}
.ex-wt-chip--correct {
  background: rgba(45, 106, 79, 0.2) !important;
  border-color: #2d6a4f !important;
  color: #74c69d !important;
}
.ex-wt-chip--missed {
  background: transparent !important;
  border: 1.5px dashed #2d6a4f !important;
  color: var(--text-3) !important;
}
.ex-wt-chip--wrong {
  background: rgba(106, 45, 45, 0.2) !important;
  border-color: #9b2335 !important;
  color: #f08080 !important;
}

.ex-wt-actions {
  margin-bottom: 10px;
}

.ex-wt-reveal-btn {
  padding: 8px 20px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.ex-wt-reveal-btn:hover:not(:disabled) {
  background: var(--card);
  border-color: var(--text-3);
}
.ex-wt-reveal-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.ex-wt-result {
  font-size: 13px;
  margin-top: 6px;
  line-height: 1.5;
}
.ex-wt-result--correct { color: #74c69d; }
.ex-wt-result--wrong   { color: var(--text-2); }

/* ─── Word-order exercise ───────────────────────────── */
.ex-wo-item {
  padding: 14px 0 16px;
  border-bottom: 1px solid var(--border);
}
.ex-wo-item:last-child { border-bottom: none; }

.ex-wo-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 10px;
  min-height: 36px;
}

.ex-wo-chip {
  padding: 6px 13px;
  background: var(--accent-light);
  border: 1.5px solid var(--accent);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s;
}
.ex-wo-chip:hover:not(:disabled) {
  background: rgba(124, 109, 240, 0.2);
}
.ex-wo-chip:disabled { opacity: 0.35; cursor: default; }

.ex-wo-slots {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 10px;
}

.ex-wo-slot {
  min-width: 64px;
  height: 36px;
  padding: 0 12px;
  background: var(--surface);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.ex-wo-slot--filled {
  background: var(--card);
  border-style: solid;
  border-color: var(--text-3);
  color: var(--text);
}
.ex-wo-slot--filled:hover {
  border-color: var(--danger);
}
.ex-wo-slot--correct {
  background: rgba(45, 106, 79, 0.2) !important;
  border-color: #2d6a4f !important;
  border-style: solid !important;
  color: #74c69d !important;
  cursor: default;
}
.ex-wo-slot--wrong {
  background: rgba(106, 45, 45, 0.2) !important;
  border-color: #9b2335 !important;
  border-style: solid !important;
  color: #f08080 !important;
  cursor: default;
}

.ex-wo-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.ex-wo-clear,
.ex-wo-check {
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
}

.ex-wo-clear {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--text-3);
}
.ex-wo-clear:hover:not(:disabled) {
  background: var(--card);
  border-color: var(--text-3);
}
.ex-wo-clear:disabled { opacity: 0.35; cursor: default; }

.ex-wo-check {
  background: var(--accent);
  border: 1.5px solid transparent;
  color: #fff;
}
.ex-wo-check:hover:not(:disabled) {
  background: var(--accent-hover);
}
.ex-wo-check:disabled {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text-3);
  cursor: default;
}

.ex-wo-result {
  font-size: 13px;
  margin-top: 4px;
  line-height: 1.5;
}
.ex-wo-result--correct { color: #74c69d; }
.ex-wo-result--wrong   { color: var(--text-2); }

/* ─── SVO match exercise ────────────────────────────── */
.ex-svo-item {
  padding: 14px 0 16px;
  border-bottom: 1px solid var(--border);
}
.ex-svo-item:last-child { border-bottom: none; }

.ex-svo-sentence {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.4;
}

.ex-svo-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.ex-svo-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-3);
  width: 52px;
  flex-shrink: 0;
}

.ex-svo-opts {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.ex-svo-btn {
  padding: 5px 12px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.ex-svo-btn:hover:not(:disabled) {
  background: var(--card);
  border-color: var(--text-3);
}
.ex-svo-btn--selected {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}
.ex-svo-btn--correct {
  background: rgba(45, 106, 79, 0.2) !important;
  border-color: #2d6a4f !important;
  color: #74c69d !important;
}
.ex-svo-btn--wrong {
  background: rgba(106, 45, 45, 0.2) !important;
  border-color: #9b2335 !important;
  color: #f08080 !important;
}
.ex-svo-btn:disabled { cursor: default; }

.ex-svo-check {
  margin-top: 12px;
  padding: 8px 20px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}
.ex-svo-check:hover:not(:disabled) {
  background: var(--accent-hover);
}
.ex-svo-check:disabled {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--text-3);
  cursor: default;
}

.ex-svo-result {
  font-size: 13px;
  margin-top: 8px;
  line-height: 1.5;
}
.ex-svo-result--correct { color: #74c69d; }
.ex-svo-result--wrong   { color: var(--text-2); }

/* ─── Letter-pick exercise ──────────────────────────── */
.ex-lp-item {
  padding: 12px 0 14px;
  border-bottom: 1px solid var(--border);
}
.ex-lp-item:last-child { border-bottom: none; }

.ex-lp-q {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 10px;
  font-weight: 500;
}

.ex-lp-keys {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 10px;
}

.ex-lp-key {
  width: 40px;
  height: 40px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.ex-lp-key:hover:not(:disabled) {
  background: var(--card);
  border-color: var(--text-3);
}
.ex-lp-key:active:not(:disabled) { transform: scale(0.92); }
.ex-lp-key:disabled { cursor: default; }

.ex-lp-key--selected {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}
.ex-lp-key--correct {
  background: rgba(45,106,79,0.2) !important;
  border-color: #2d6a4f !important;
  color: #74c69d !important;
}
.ex-lp-key--missed {
  background: transparent !important;
  border: 1.5px dashed #2d6a4f !important;
  color: var(--text-3) !important;
}
.ex-lp-key--wrong {
  background: rgba(106,45,45,0.2) !important;
  border-color: #9b2335 !important;
  color: #f08080 !important;
}

.ex-lp-check {
  padding: 7px 20px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  cursor: pointer;
  transition: background 0.15s;
  margin-bottom: 4px;
}
.ex-lp-check:hover:not(:disabled) { background: var(--accent-hover); }
.ex-lp-check:disabled {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--text-3);
  cursor: default;
}

.ex-lp-result {
  font-size: 13px;
  margin-top: 4px;
  line-height: 1.5;
}
.ex-lp-result--correct { color: #74c69d; }
.ex-lp-result--wrong   { color: var(--text-2); }

/* ─── M / F tap exercise ────────────────────────────── */
.ex-mf {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.ex-mf:last-child { border-bottom: none; }

.ex-mf-q {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 8px;
}

.ex-mf-btns {
  display: flex;
  gap: 8px;
}

.ex-mf-btn {
  padding: 7px 28px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-2);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.ex-mf-btn:hover:not(:disabled) {
  background: var(--card);
  border-color: var(--text-3);
}
.ex-mf-btn:disabled { cursor: default; }

.ex-mf-btn--correct {
  background: rgba(45,106,79,0.2) !important;
  border-color: #2d6a4f !important;
  color: #74c69d !important;
}
.ex-mf-btn--wrong {
  background: rgba(106,45,45,0.2) !important;
  border-color: #9b2335 !important;
  color: #f08080 !important;
}

.ex-mf-result {
  font-size: 12px;
  margin-top: 6px;
}
.ex-mf-result--correct { color: #74c69d; }
.ex-mf-result--wrong   { color: #f08080; }