:root {
  --forest: #053816;
  --deep-green: #0d5938;
  --emerald: #179b61;
  --orange: #ff8c00;
  --cream: #faf5e8;
  --mist: rgba(255, 255, 255, 0.85);
  --card-muted: #476b59;
  --line: rgba(23, 155, 97, 0.32);
  --danger: #b91c1c;
  --warn: #b45309;
  --touch-min: 44px;
  --wrap-max: 1040px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.45;
  background-color: var(--forest);
  background-image: linear-gradient(145deg, var(--forest), var(--deep-green), var(--emerald));
  color: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding:
    var(--safe-top)
    var(--safe-right)
    var(--safe-bottom)
    var(--safe-left);
}

a {
  color: var(--orange);
  cursor: pointer;
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

#root {
  min-height: calc(100vh - var(--safe-top) - var(--safe-bottom));
  min-height: calc(100dvh - var(--safe-top) - var(--safe-bottom));
}

.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: 12px 14px 28px;
}

.shell-header {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: flex-start;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

.shell-header-main {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  gap: 8px;
  min-width: 0;
  -webkit-box-flex: 1;
  -ms-flex: 1 1 180px;
  flex: 1 1 180px;
}

.shell-header h1 {
  margin: 0;
  font-size: 1.05rem;
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.25;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.shell-actions {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 8px;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -ms-flex-negative: 0;
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.shell-menu-btn {
  font-size: 0.88rem;
  padding: 8px 12px;
}

@media (max-width: 420px) {
  .shell-menu-btn {
    padding: 8px 10px;
    font-size: 0.82rem;
  }

  .shell-header h1 {
    font-size: 1.1rem;
  }
}

.avatar-btn {
  width: var(--touch-min);
  height: var(--touch-min);
  min-width: var(--touch-min);
  min-height: var(--touch-min);
  border-radius: 50%;
  border: 2px solid var(--orange);
  background: var(--cream);
  color: var(--deep-green);
  font-weight: 700;
  cursor: pointer;
  overflow: hidden;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

.avatar-btn img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
  object-fit: cover;
  display: block;
}

.avatar-btn.avatar-lg {
  width: 64px;
  height: 64px;
  min-width: 64px;
  min-height: 64px;
  font-size: 1.4rem;
}

.card {
  background: var(--cream);
  background: linear-gradient(180deg, var(--cream), #fff);
  color: #123;
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.card h2,
.card h3 {
  margin: 0 0 12px;
  color: var(--deep-green);
  line-height: 1.3;
}

.card-title-row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  gap: 10px;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

.card-title-row h2 {
  margin: 0;
  -webkit-box-flex: 1;
  -ms-flex: 1 1 auto;
  flex: 1 1 auto;
}

.muted { color: var(--card-muted); font-size: 0.9rem; }
.error { color: var(--danger); margin-top: 8px; }
.success { color: var(--emerald); margin-top: 8px; }
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-sm { margin-top: 12px; }
.mt-md { margin-top: 16px; }
.w-full { width: 100%; }

input,
select,
textarea,
button {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--line);
  padding: 10px 12px;
  max-width: 100%;
}

input,
select,
textarea {
  width: 100%;
  background: #fff;
  color: #123;
}

/* Evita zoom automático no iOS ao focar campos */
@media (max-width: 767px) {
  input,
  select,
  textarea {
    font-size: 16px;
  }
}

textarea {
  min-height: 120px;
  resize: vertical;
}

button {
  background: var(--orange);
  color: #fff;
  border: none;
  cursor: pointer;
  font-weight: 600;
  min-height: var(--touch-min);
  padding: 10px 16px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

button.secondary { background: var(--deep-green); }
button.danger { background: var(--danger); }

button.ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

button.ghost-on-card {
  background: transparent;
  color: var(--deep-green);
  border: 1px solid var(--line);
}

button.ghost-on-card.danger {
  color: var(--danger);
  border-color: rgba(185, 28, 28, 0.35);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 10px;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}

.row.center { -webkit-box-pack: center; -ms-flex-pack: center; justify-content: center; }
.row.between { -webkit-box-pack: justify; -ms-flex-pack: justify; justify-content: space-between; }

.stack {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  gap: 10px;
  -webkit-box-align: stretch;
  -ms-flex-align: stretch;
  align-items: stretch;
}

.stack.grow {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  min-width: 0;
}

.profile-grid {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 14px;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -webkit-box-align: start;
  -ms-flex-align: start;
  align-items: flex-start;
}

.menu-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

@supports (grid-template-columns: repeat(auto-fit, minmax(260px, 1fr))) {
  .menu-grid:not(.dashboard-grid) {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  }
}

.wrap-dashboard {
  --wrap-max: 1240px;
  padding-bottom: max(40px, var(--safe-bottom));
}

.dashboard-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
  padding: 4px 0;
}

.dashboard-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  color: rgba(255, 255, 255, 0.95);
}

.dashboard-brand > span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dashboard-brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 1.1rem;
}

.dashboard-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding: 18px 16px;
  border-radius: 18px;
  background:
    radial-gradient(circle at top right, rgba(255, 140, 0, 0.22), transparent 42%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.06));
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.dashboard-hero-copy {
  min-width: 0;
  flex: 1 1 12rem;
}

.dashboard-eyebrow {
  margin: 0 0 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}

.dashboard-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  margin: 0 0 8px;
  font-size: clamp(1.35rem, 4.5vw, 2.2rem);
  line-height: 1.15;
  color: #fff;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.dashboard-subtitle {
  margin: 0;
  max-width: 52ch;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(0.88rem, 2.5vw, 0.98rem);
  line-height: 1.4;
}

.dashboard-hero-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  min-width: 64px;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--cream), #fff);
  color: var(--deep-green);
  font-size: 1.45rem;
  font-weight: 700;
  border: 2px solid rgba(255, 255, 255, 0.45);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
  overflow: hidden;
  flex-shrink: 0;
}

.dashboard-hero-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.badge-hero {
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.92);
  color: var(--deep-green);
  font-size: 0.78rem;
  font-weight: 700;
}

.dashboard-grid {
  gap: 12px;
}

.menu-card {
  display: flex;
  gap: 14px;
  align-items: center;
  text-align: left;
  width: 100%;
  padding: 16px;
  min-height: 56px;
  background: var(--cream);
  background: linear-gradient(180deg, #fffefb, #fff);
  color: var(--deep-green);
  border: 1px solid rgba(23, 155, 97, 0.18);
  border-radius: 16px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.75) inset,
    0 10px 24px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    border-color 0.18s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (hover: hover) and (pointer: fine) {
  .menu-card:hover:not(:disabled),
  .menu-card:focus-visible:not(:disabled) {
    transform: translateY(-2px);
    border-color: rgba(23, 155, 97, 0.34);
    box-shadow:
      0 1px 0 rgba(255, 255, 255, 0.85) inset,
      0 16px 32px rgba(0, 0, 0, 0.16);
  }
}

.menu-card:active:not(:disabled) {
  transform: translateY(0);
}

.menu-card:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.menu-card-copy {
  min-width: 0;
}

.menu-card .icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 14px;
  background: rgba(255, 140, 0, 0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.menu-card[data-accent="lesson"] .icon { background: rgba(37, 99, 235, 0.14); }
.menu-card[data-accent="studies"] .icon { background: rgba(23, 155, 97, 0.16); }
.menu-card[data-accent="materials"] .icon { background: rgba(168, 85, 247, 0.14); }
.menu-card[data-accent="review"] .icon { background: rgba(234, 88, 12, 0.14); }
.menu-card[data-accent="listen"] .icon { background: rgba(220, 38, 38, 0.12); }
.menu-card[data-accent="fluency"] .icon { background: rgba(14, 165, 233, 0.14); }
.menu-card[data-accent="settings"] .icon { background: rgba(71, 85, 105, 0.12); }

.menu-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1rem;
}

.menu-card span {
  color: var(--card-muted);
  font-size: 0.86rem;
  display: block;
  line-height: 1.35;
}

.menu-card-featured {
  background:
    radial-gradient(circle at top right, rgba(255, 140, 0, 0.12), transparent 48%),
    linear-gradient(180deg, #fffefb, #fff);
  border-color: rgba(255, 140, 0, 0.28);
}

.menu-card-featured strong {
  font-size: 1.05rem;
}

@media (max-width: 559px) {
  .dashboard-hero {
    flex-direction: column;
    align-items: stretch;
    text-align: left;
  }

  .dashboard-hero-avatar {
    align-self: flex-start;
  }

  .wrap-dashboard .shell-actions .ghost {
    padding: 8px 12px;
    font-size: 0.85rem;
  }
}

@media (max-width: 380px) {
  .wrap-dashboard {
    padding-left: max(10px, var(--safe-left));
    padding-right: max(10px, var(--safe-right));
  }

  .dashboard-hero {
    padding: 16px 14px;
    border-radius: 16px;
  }

  .menu-card {
    padding: 14px;
    gap: 12px;
  }

  .menu-card .icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    font-size: 1.2rem;
  }
}

@media (min-width: 480px) {
  .wrap { padding: 16px 18px 32px; }
  .menu-grid { gap: 14px; }
  .dashboard-brand { font-size: 1rem; }
  .dashboard-hero {
    padding: 20px 20px 18px;
    border-radius: 20px;
    margin-bottom: 20px;
  }
  .dashboard-hero-avatar {
    width: 72px;
    height: 72px;
    min-width: 72px;
    border-radius: 18px;
    font-size: 1.6rem;
  }
}

@media (min-width: 600px) {
  .dashboard-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .menu-card-featured {
    grid-column: 1 / -1;
    padding: 20px 22px;
    border-radius: 18px;
  }
}

@media (min-width: 768px) {
  .wrap { padding: 24px 28px 48px; }
  .wrap-dashboard { padding: 28px 32px 56px; }
  .shell-header h1 { font-size: 1.35rem; }
  .card { padding: 18px; }
  .login-wrap { max-width: 620px; padding: 32px 28px 48px; }
  .login-hero .logo { width: 112px; height: 112px; font-size: 2.85rem; }
  .login-card { padding: 32px 28px; }
  .list-item { -webkit-box-align: center; -ms-flex-align: center; align-items: center; }
  .dashboard-topbar { margin-bottom: 22px; }
  .dashboard-hero {
    flex-direction: row;
    align-items: center;
    padding: 28px 30px 24px;
    margin-bottom: 26px;
  }
  .dashboard-hero-avatar {
    width: 84px;
    height: 84px;
    min-width: 84px;
    border-radius: 20px;
    font-size: 1.85rem;
  }
  .menu-card {
    padding: 18px;
    border-radius: 18px;
    min-height: var(--touch-min);
  }
}

@media (min-width: 900px) {
  .dashboard-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 15px;
  }

  .menu-card-featured {
    grid-column: span 2;
    min-height: 104px;
  }

  .dashboard-grid .menu-card-settings:last-child:nth-child(3n + 1) {
    grid-column: 2;
  }
}

@media (min-width: 1024px) {
  .dashboard-grid {
    gap: 16px;
  }

  .menu-card-featured {
    padding: 22px 24px;
    min-height: 112px;
  }

  .menu-card-featured .icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    font-size: 1.55rem;
  }
}

@media (min-width: 1280px) {
  .wrap-dashboard {
    --wrap-max: 1320px;
  }

  .dashboard-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .menu-card-featured {
    grid-column: span 2;
  }

  .dashboard-grid .menu-card-settings:last-child:nth-child(3n + 1) {
    grid-column: auto;
  }
}

@media (min-width: 600px) and (max-width: 767px) and (orientation: landscape) {
  .dashboard-hero {
    flex-direction: row;
    align-items: center;
  }

  .dashboard-hero-avatar {
    align-self: center;
  }
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: #e8f5ee;
  color: var(--deep-green);
  font-size: 0.75rem;
  font-weight: 700;
  vertical-align: middle;
}

.badge.warn { background: #fff3e6; color: var(--warn); }
.badge.locked { background: #f3f4f6; color: #6b7280; }
.badge.passed { background: #dcfce7; color: #166534; }

.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  min-width: 280px;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th { color: var(--card-muted); font-weight: 600; }

.tabs {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 8px;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  margin-bottom: 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 2px;
}

.tabs button {
  background: rgba(255, 255, 255, 0.12);
  white-space: nowrap;
  -ms-flex-negative: 0;
  flex-shrink: 0;
}

.tabs button.active { background: var(--orange); }

.login-wrap {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: 24px 20px 32px;
  min-height: calc(100vh - var(--safe-top) - var(--safe-bottom));
  min-height: calc(100dvh - var(--safe-top) - var(--safe-bottom));
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-hero {
  text-align: center;
  margin-bottom: 28px;
}

.login-hero h1 {
  margin: 0 0 8px;
  font-size: clamp(1.85rem, 6vw, 2.75rem);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.15;
}

.login-hero .logo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: rgba(255, 140, 0, 0.2);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  font-size: 2.5rem;
}

.login-card {
  padding: 28px 24px;
}

.login-card .stack {
  gap: 14px;
}

.login-card input {
  padding: 14px 16px;
  font-size: 1.05rem;
  border-radius: 12px;
}

.login-card button {
  padding: 14px 20px;
  font-size: 1.05rem;
  min-height: 52px;
  border-radius: 12px;
  margin-top: 4px;
}

.login-footer {
  text-align: center;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.login-tagline {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
}

.health-banner {
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}

.health-banner.ok { background: rgba(23, 155, 97, 0.25); }
.health-banner.warn { background: rgba(255, 140, 0, 0.25); }
.health-banner.bad { background: rgba(185, 28, 28, 0.25); }

.prose {
  white-space: pre-wrap;
  line-height: 1.55;
  color: #1f2937;
  overflow-wrap: anywhere;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4,
.prose .md-h1,
.prose .md-h2,
.prose .md-h3,
.prose .md-h4 {
  color: var(--deep-green);
  line-height: 1.3;
  margin: 0.75rem 0 0.35rem;
}

.prose .md-example-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: rgba(31, 41, 55, 0.75);
  margin: 0.35rem 0 0.15rem;
}

.prose ul {
  padding-left: 1.2rem;
  margin: 0.5rem 0;
}

.quiz-question-block {
  margin-bottom: 14px;
}

.quiz-question-label {
  margin: 0 0 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--card-muted);
}

.quiz-question-native {
  margin: 0 0 12px;
  line-height: 1.45;
}

.quiz-question-learning {
  margin: 0;
  color: var(--emerald);
  font-weight: 600;
  line-height: 1.45;
}

.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  margin-bottom: 8px;
  background: #fff;
  color: #123;
  border: 1px solid var(--line);
}

.quiz-option.selected { border-color: var(--orange); background: #fff8ef; }
.quiz-option.correct { border-color: var(--emerald); background: #ecfdf5; }
.quiz-option.wrong { border-color: var(--danger); background: #fef2f2; }

.progress-bar {
  height: 10px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  overflow: hidden;
  margin: 8px 0;
}

.progress-bar > span {
  display: block;
  height: 100%;
  background: var(--orange);
  min-width: 0;
  -webkit-transition: width 0.25s ease;
  transition: width 0.25s ease;
}

.flashcard-deck {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
  width: 100%;
}

.flashcard-progress {
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--card-muted);
}

.flashcard-face {
  width: 100%;
  min-height: 148px;
  margin: 0;
  padding: 20px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.flashcard-text {
  font-size: clamp(1rem, 4.5vw, 1.25rem);
  font-weight: 600;
  line-height: 1.45;
  color: var(--deep-green);
  overflow-wrap: anywhere;
  word-break: break-word;
  max-width: 100%;
}

.flashcard-hint {
  text-align: center;
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.3;
}

.flashcard-nav {
  justify-content: center;
  gap: 12px;
  margin-top: 4px;
}

.flashcard-nav button {
  min-width: var(--touch-min);
}

#flashcardArea {
  width: 100%;
}

.list-item {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  gap: 12px;
  -webkit-box-align: start;
  -ms-flex-align: start;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

.list-item > div:first-child {
  min-width: 0;
  -webkit-box-flex: 1;
  -ms-flex: 1 1 180px;
  flex: 1 1 180px;
}

.list-item:last-child { border-bottom: none; }

.list-item .list-actions {
  -ms-flex-negative: 0;
  flex-shrink: 0;
}

.practice-block {
  margin-bottom: 16px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.phrase-row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 8px;
  -webkit-box-align: start;
  -ms-flex-align: start;
  align-items: flex-start;
  margin-bottom: 8px;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

.recorder {
  text-align: center;
  padding: 16px;
}

.recorder .timer {
  font-size: clamp(1.5rem, 6vw, 2rem);
  font-weight: 700;
  color: var(--deep-green);
  margin: 12px 0;
  font-variant-numeric: tabular-nums;
}

.listen-browser-hint {
  margin: 0 0 8px;
  font-size: 0.88rem;
}

.listen-transcript {
  margin: 0 0 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(13, 89, 56, 0.08);
  color: var(--deep-green);
  line-height: 1.45;
  min-height: 48px;
  text-align: left;
}

audio,
video {
  max-width: 100%;
}

.browser-warning {
  max-width: 520px;
  margin: 10vh auto;
  padding: 0 14px;
}

.study-extras h3 { color: var(--deep-green); }
.extras-actions { margin: 12px 0; }
.extras-section { margin-top: 12px; border-top: 1px solid var(--line); padding-top: 8px; }
.extras-section-toggle {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(13, 89, 56, 0.08);
  color: var(--deep-green);
  border: 1px solid var(--line);
  text-align: left;
  font-weight: 600;
}
.extras-section-body { display: none; padding-top: 12px; }
.extras-section.open .extras-section-body { display: block; }
.daily-example-card {
  background: #fff;
  border: 1px solid rgba(23, 155, 97, 0.15);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 10px;
}
.daily-scenario { font-weight: 600; color: var(--deep-green); margin-bottom: 6px; }
.daily-phrase-row { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 4px; }
.daily-phrase { flex: 1; font-weight: 600; color: var(--emerald); }
.dialogue-player-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.dialogue-player-actions .dialogue-auto-stop {
  min-width: 120px;
}

.dialogue-bubble.dialogue-line-active {
  outline: 2px solid var(--orange);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.22);
}

.dialogue-scenario {
  background: rgba(23, 155, 97, 0.08);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
  font-weight: 600;
  color: var(--deep-green);
}
.dialogue-bubble { border-radius: 12px; padding: 12px; margin-bottom: 10px; max-width: 92%; }
.dialogue-bubble.bart { background: #fff; border: 1px solid var(--line); margin-right: auto; }
.dialogue-bubble.mel {
  background: rgba(23, 155, 97, 0.06);
  border: 1px solid rgba(23, 155, 97, 0.2);
  margin-left: auto;
}
.dialogue-meta { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 6px; }
.dialogue-text { margin: 0 0 6px; color: var(--deep-green); }
.materials-group { margin-bottom: 18px; }
.materials-search {
  width: 100%;
  margin-bottom: 12px;
}
.materials-group-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.materials-group-card {
  display: block;
  width: 100%;
  text-align: left;
  background: linear-gradient(145deg, #fff, #f4faf6);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  color: var(--deep-green);
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.materials-group-card:hover,
.materials-group-card:focus-visible {
  border-color: var(--emerald);
  transform: translateY(-1px);
}
.materials-group-card h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  color: var(--deep-green);
}
.materials-group-card .materials-count {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--emerald);
}
.materials-group-card .materials-date {
  display: block;
  margin-top: 6px;
  font-size: 0.75rem;
  color: var(--card-muted);
}
.materials-group-card .materials-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--orange);
}

.studies-lesson-filters {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0 14px;
}

.studies-filter-label {
  font-size: 0.8rem;
  margin: 0;
}
.materials-detail-title {
  margin: 0 0 16px;
  color: var(--deep-green);
  font-size: 1.35rem;
}
.vocab-card {
  background: #fff;
  border: 1px solid rgba(23, 155, 97, 0.15);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 10px;
}
.vocab-term-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 6px;
}
.vocab-term {
  font-weight: 700;
  color: var(--emerald);
}
.vocab-meaning {
  flex: 1;
  min-width: 120px;
  font-weight: 600;
  color: var(--deep-green);
  text-align: right;
}
.vocab-example-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.vocab-example-row .muted {
  flex: 1;
  font-style: italic;
}
.materials-flash-wrap { margin-top: 8px; }
.speak-btn { min-height: 36px; min-width: 36px; padding: 4px 8px; }

/* Settings */
.settings-card h3 {
  margin-bottom: 8px;
  color: var(--deep-green);
}

.settings-intro {
  margin: 0 0 12px;
  line-height: 1.45;
}

.settings-avatar-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 560px) {
  .settings-avatar-block {
    flex-direction: row;
    text-align: left;
    align-items: center;
  }
}

.avatar-btn.avatar-xl {
  width: 88px;
  height: 88px;
  min-width: 88px;
  min-height: 88px;
  font-size: 1.75rem;
}

.settings-avatar-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.settings-avatar-meta strong {
  font-size: 1.1rem;
  color: var(--deep-green);
  overflow-wrap: anywhere;
}

.settings-profile-form {
  gap: 14px;
}

.settings-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.settings-label {
  font-weight: 600;
  color: var(--deep-green);
  font-size: 0.92rem;
}

.settings-hint {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.35;
}

.settings-control input,
.settings-control select,
.settings-control textarea {
  width: 100%;
}

.settings-actions {
  gap: 10px;
  margin-top: 4px;
}

.lesson-explanation-hint {
  margin: -4px 0 0;
  font-size: 0.82rem;
  color: var(--emerald);
}

.lesson-attachment-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.lesson-attachment-hint {
  margin: 0;
  font-size: 0.82rem;
  color: var(--card-muted);
}

.lesson-attachment-name {
  margin: 0;
  font-size: 0.85rem;
  color: var(--deep-green);
  overflow-wrap: anywhere;
}

.file-picker-btn {
  display: block;
  width: 100%;
  text-align: center;
  cursor: pointer;
  position: relative;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.token-usage-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.token-bar {
  background: rgba(13, 89, 56, 0.15);
}

.fluency-lesson-video {
  width: 100%;
  max-height: 420px;
  border-radius: 12px;
  background: #000;
}

.listen-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 16px;
  text-align: center;
}

.listen-loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(13, 89, 56, 0.2);
  border-top-color: var(--emerald);
  border-radius: 50%;
  animation: listen-spin 0.8s linear infinite;
}

@keyframes listen-spin {
  to { transform: rotate(360deg); }
}

.fluency-video-card h3 {
  margin-bottom: 10px;
  color: var(--deep-green);
}

.token-bar > span {
  background: var(--emerald);
}

.settings-languages-header {
  margin: 8px 0 4px;
  color: var(--cream);
}

.settings-languages-header h3 {
  margin: 0 0 6px;
  font-size: 1.2rem;
  color: var(--cream);
}

.settings-languages-header p {
  margin: 0;
  color: var(--mist);
  line-height: 1.45;
  font-size: 0.95rem;
}

.settings-avatar-hint {
  font-size: 0.82rem;
  color: var(--emerald);
}

.settings-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--deep-green);
  font-weight: 600;
}

.settings-toggle input {
  width: auto;
}

.settings-upgrade-card {
  border-color: rgba(255, 140, 0, 0.35);
}

.settings-upgrade-link {
  display: block;
  text-align: center;
  text-decoration: none;
}

.settings-ai-card {
  border-color: rgba(255, 140, 0, 0.25);
}

.plan-label {
  color: var(--emerald);
}

.activity-usage-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.activity-usage-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 6px;
  color: var(--deep-green);
  font-size: 0.95rem;
}

.activity-usage-head strong {
  font-size: 0.82rem;
  color: var(--orange);
}

.activity-usage-head strong.at-limit {
  color: #b91c1c;
}

.activity-bar > span {
  background: var(--orange);
}

.activity-bar.at-limit > span {
  background: #b91c1c;
}

.settings-stepper {
  display: flex;
  align-items: center;
  gap: 14px;
}

.stepper-btn {
  width: 42px;
  height: 42px;
  min-width: 42px;
  border-radius: 10px;
  font-size: 1.35rem;
  line-height: 1;
  padding: 0;
}

.stepper-value {
  flex: 1;
  text-align: center;
  font-weight: 700;
  color: var(--emerald);
}

.segmented-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.segmented-option {
  position: relative;
  margin: 0;
}

.segmented-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented-option span {
  display: block;
  text-align: center;
  padding: 11px 10px;
  font-size: 0.9rem;
  color: var(--deep-green);
  cursor: pointer;
  border-right: 1px solid var(--line);
}

.segmented-option:last-child span {
  border-right: 0;
}

.segmented-option input:checked + span {
  background: rgba(23, 155, 97, 0.14);
  color: var(--emerald);
  font-weight: 700;
}

.settings-voice-label {
  margin: 10px 0 0;
  font-size: 0.82rem;
  color: var(--deep-green);
}

.settings-voice-label::before {
  content: '✓ ';
  color: var(--emerald);
  font-weight: 700;
}

.settings-level-desc {
  margin: 8px 0 0;
  line-height: 1.4;
  font-size: 0.85rem;
}

.settings-summary-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  border-color: rgba(23, 155, 97, 0.35);
}

.settings-summary-body {
  flex: 1;
  min-width: 0;
}

.settings-summary-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 12px;
  background: rgba(23, 155, 97, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  line-height: 1;
}

.settings-summary-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--card-muted);
  margin-bottom: 6px;
}

.settings-summary-value {
  font-weight: 600;
  font-size: 1rem;
  color: var(--deep-green);
  line-height: 1.45;
}

.settings-sync-note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--card-muted);
}

.settings-voice-warning {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 140, 0, 0.12);
  color: var(--deep-green);
}

.settings-voice-warning p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.4;
}

.settings-dialog {
  border: none;
  border-radius: 16px;
  padding: 0;
  max-width: min(360px, calc(100vw - 32px));
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
}

.settings-dialog::backdrop {
  background: rgba(0, 0, 0, 0.45);
}

.settings-dialog .stack {
  padding: 18px;
  gap: 10px;
}

.settings-dialog h3 {
  margin: 0 0 6px;
  color: var(--deep-green);
}

.avatar-btn.avatar-xl {
  cursor: pointer;
  border: 2px solid rgba(23, 155, 97, 0.35);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .progress-bar > span { -webkit-transition: none; transition: none; }
  .menu-card {
    transition: none;
  }
}