:root {
  color-scheme: light;
  --bg: #eef3fb;
  --bg-deep: #dfe8f8;
  --surface: rgba(255, 255, 255, 0.76);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --surface-soft: rgba(255, 255, 255, 0.54);
  --glass-border: rgba(255, 255, 255, 0.58);
  --line: rgba(82, 102, 145, 0.16);
  --ink: #172033;
  --ink-soft: #33415f;
  --muted: #66718c;
  --brand: #263b82;
  --brand-2: #1a8a89;
  --accent: #b96ee8;
  --success: #168057;
  --danger: #b84055;
  --warning: #c17b27;
  --gradient-page:
    radial-gradient(ellipse 80% 48% at 12% 0%, rgba(126, 164, 255, 0.35), transparent 62%),
    radial-gradient(ellipse 68% 48% at 98% 8%, rgba(185, 110, 232, 0.2), transparent 58%),
    radial-gradient(ellipse 80% 54% at 48% 100%, rgba(26, 138, 137, 0.16), transparent 62%),
    linear-gradient(145deg, #f7f9ff 0%, #eef3fb 43%, #e6edf9 100%);
  --gradient-primary: linear-gradient(135deg, #263b82 0%, #2567b8 48%, #1a8a89 100%);
  --gradient-soft: linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.54));
  --shadow-sm: 0 8px 20px rgba(31, 42, 82, 0.08);
  --shadow-md: 0 18px 48px rgba(31, 42, 82, 0.14);
  --shadow-lg: 0 28px 76px rgba(31, 42, 82, 0.18);
  --inner-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.74);
  --radius-xl: 30px;
  --radius: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
  --tap: 52px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --fast: 140ms var(--ease);
  --medium: 240ms var(--ease);
  --slow: 340ms var(--ease);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
  background: var(--bg);
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: var(--gradient-page);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.modal-open {
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(110deg, rgba(255, 255, 255, 0.32), transparent 32% 68%, rgba(255, 255, 255, 0.22)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 96px);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 86%);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(38, 103, 184, 0.38);
  outline-offset: 4px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  color: var(--ink);
  font-size: clamp(2.15rem, 8vw, 3.5rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  color: var(--ink);
  font-size: 1.08rem;
  line-height: 1.24;
  letter-spacing: 0;
}

.app-shell {
  position: relative;
  width: 100%;
}

.app {
  position: relative;
  width: min(100%, 720px);
  min-height: 100vh;
  margin: 0 auto;
  padding: max(22px, env(safe-area-inset-top)) clamp(14px, 4vw, 28px) max(32px, env(safe-area-inset-bottom));
}

.app-version {
  width: min(100%, 720px);
  margin: -18px auto max(12px, env(safe-area-inset-bottom));
  padding: 0 clamp(14px, 4vw, 28px);
  color: rgba(51, 65, 95, 0.5);
  font-size: 0.68rem;
  font-weight: 760;
  text-align: right;
}

.screen {
  display: grid;
  gap: var(--space-4);
  animation: screen-enter var(--slow);
}

.screen[hidden] {
  display: none;
}

.screen-center {
  min-height: calc(100vh - 64px);
  align-content: center;
  justify-items: stretch;
}

.screen-center > .eyebrow,
.screen-center > h1,
.screen-center > .lead,
.screen-center > .stack {
  width: 100%;
  max-width: 460px;
  margin-inline: auto;
}

.screen-center > .stack {
  margin-top: var(--space-2);
  padding: var(--space-5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-lg), var(--inner-highlight);
  backdrop-filter: blur(22px) saturate(1.22);
  -webkit-backdrop-filter: blur(22px) saturate(1.22);
}

.brand-mark {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 21px;
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: 0 18px 42px rgba(38, 59, 130, 0.24), var(--inner-highlight);
  font-weight: 850;
  letter-spacing: 0;
}

.lead,
.hero p,
.muted,
.info-panel p {
  color: var(--muted);
  line-height: 1.55;
}

.stack,
.card,
.question-card,
.info-panel {
  display: grid;
  gap: var(--space-3);
}

.card,
.question-card,
.info-panel,
.result-stat,
.empty-state,
.feedback,
.missed-item,
.leaderboard-row {
  border: 1px solid var(--glass-border);
  background: var(--surface);
  box-shadow: var(--shadow-md), var(--inner-highlight);
  backdrop-filter: blur(20px) saturate(1.18);
  -webkit-backdrop-filter: blur(20px) saturate(1.18);
}

.card,
.question-card,
.info-panel,
.empty-state {
  border-radius: var(--radius);
  padding: var(--space-5);
  transition: transform var(--medium), box-shadow var(--medium), border-color var(--medium), background var(--medium);
}

.card {
  position: relative;
  overflow: hidden;
}

.card::after,
.question-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.56), transparent 44%);
  opacity: 0.62;
}

label {
  color: var(--ink-soft);
  font-weight: 760;
}

input {
  width: 100%;
  min-height: 58px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-md);
  padding: 0 16px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.68);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75), 0 8px 18px rgba(31, 42, 82, 0.07);
  font-size: 1.05rem;
  transition: border-color var(--medium), box-shadow var(--medium), background var(--medium);
}

input:focus {
  border-color: rgba(38, 103, 184, 0.42);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85), 0 0 0 5px rgba(38, 103, 184, 0.1);
}

.button,
.tab,
.text-button,
.icon-button {
  min-height: var(--tap);
  border: 0;
  border-radius: 999px;
  transition:
    transform var(--fast),
    box-shadow var(--medium),
    background var(--medium),
    border-color var(--medium),
    opacity var(--medium);
}

.button:active,
.tab:active,
.text-button:active,
.icon-button:active {
  transform: scale(0.985);
}

.button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: 14px 18px;
  font-weight: 830;
  letter-spacing: 0;
  box-shadow: var(--shadow-sm), var(--inner-highlight);
}

.button span {
  color: inherit;
  font-size: 0.84rem;
  font-weight: 690;
  opacity: 0.76;
}

.button-primary {
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: 0 16px 34px rgba(38, 59, 130, 0.24), var(--inner-highlight);
}

.button-secondary {
  color: var(--brand);
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.64);
}

.button-danger {
  color: #fff;
  background: linear-gradient(135deg, #b42318 0%, #e5484d 54%, #f97373 100%);
  box-shadow: 0 16px 34px rgba(180, 35, 24, 0.2), var(--inner-highlight);
}

.button-share {
  color: #fff;
  background: linear-gradient(135deg, #148a5b 0%, #1fb76f 52%, #17a78d 100%);
  box-shadow: 0 16px 34px rgba(20, 138, 91, 0.22), var(--inner-highlight);
}

.button[disabled] {
  cursor: progress;
  opacity: 0.62;
  transform: none;
}

.text-button {
  padding: 0 12px;
  color: var(--brand);
  background: rgba(255, 255, 255, 0.44);
  font-weight: 820;
}

.icon-button {
  display: grid;
  width: 52px;
  place-items: center;
  color: var(--brand);
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: var(--shadow-sm), var(--inner-highlight);
  font-size: 1.35rem;
}

.form-message {
  min-height: 1.4em;
  color: var(--danger);
  font-weight: 760;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: max(18px, env(safe-area-inset-top)) 18px max(18px, env(safe-area-inset-bottom));
  background:
    radial-gradient(circle at 50% 18%, rgba(126, 164, 255, 0.28), transparent 34rem),
    rgba(23, 32, 51, 0.32);
  backdrop-filter: blur(18px) saturate(1.16);
  -webkit-backdrop-filter: blur(18px) saturate(1.16);
  animation: modal-fade var(--medium);
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-card {
  display: grid;
  width: min(100%, 430px);
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-lg), var(--inner-highlight);
  backdrop-filter: blur(24px) saturate(1.22);
  -webkit-backdrop-filter: blur(24px) saturate(1.22);
  animation: modal-rise var(--slow);
}

.modal-card h2 {
  font-size: 1.35rem;
}

.modal-card p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.5;
}

.hero {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3) 2px 0;
}

.hero.compact {
  position: relative;
  overflow: hidden;
  padding: var(--space-5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-md), var(--inner-highlight);
  backdrop-filter: blur(20px) saturate(1.16);
  -webkit-backdrop-filter: blur(20px) saturate(1.16);
}

.hero.compact [data-result-headline] {
  width: fit-content;
  padding: 8px 16px;
  border-radius: 999px;
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: 0 16px 34px rgba(38, 59, 130, 0.24);
}

.result-context-note {
  margin-top: var(--space-1);
  padding: 10px 12px;
  border: 1px solid rgba(67, 86, 161, 0.16);
  border-radius: var(--radius-sm);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.58);
  box-shadow: var(--inner-highlight);
}

.eyebrow {
  color: var(--brand);
  font-size: 0.76rem;
  font-weight: 860;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.grid,
.button-grid {
  display: grid;
  gap: var(--space-3);
}

.home-links {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.admin-section-head,
.admin-user-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.admin-user-list {
  display: grid;
  gap: var(--space-3);
}

.admin-user-row {
  padding: var(--space-3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.52);
  box-shadow: var(--shadow-sm), var(--inner-highlight);
}

.admin-user-row p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.admin-user-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.admin-user-actions .button {
  min-height: 42px;
  padding: 0 14px;
  font-size: 0.86rem;
}

.mode-toggle {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-3);
  width: min(100%, 430px);
  margin-inline: auto;
  padding: 12px 14px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.56);
  box-shadow: var(--shadow-sm), var(--inner-highlight);
  color: var(--ink);
}

.mode-toggle input {
  width: 48px;
  min-height: 30px;
  height: 30px;
  margin: 0;
  appearance: none;
  border: 1px solid rgba(82, 102, 145, 0.2);
  border-radius: 999px;
  padding: 0;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: inset 0 1px 3px rgba(31, 42, 82, 0.12);
  transition: background var(--fast), border-color var(--fast), box-shadow var(--fast);
}

.mode-toggle input::before {
  content: "";
  display: block;
  width: 24px;
  height: 24px;
  margin: 2px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 4px 10px rgba(31, 42, 82, 0.18);
  transition: transform var(--fast);
}

.mode-toggle input:checked {
  border-color: rgba(38, 59, 130, 0.26);
  background: var(--gradient-primary);
  box-shadow: 0 10px 20px rgba(38, 59, 130, 0.16), var(--inner-highlight);
}

.mode-toggle input:checked::before {
  transform: translateX(18px);
}

.mode-toggle strong,
.mode-toggle small {
  display: block;
}

.mode-toggle small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.quiz-top {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  align-items: center;
  gap: var(--space-3);
}

.score-pill {
  display: grid;
  min-width: 54px;
  height: 54px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-2), #2f67c7);
  box-shadow: 0 14px 26px rgba(26, 138, 137, 0.24), var(--inner-highlight);
  font-weight: 900;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 760;
}

.progress-track {
  height: 11px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.46);
  box-shadow: inset 0 1px 4px rgba(31, 42, 82, 0.08);
}

.progress-track div {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand-2), #4e7fee, var(--accent));
  box-shadow: 0 0 18px rgba(78, 127, 238, 0.34);
  transition: width var(--slow);
}

.question-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  gap: var(--space-4);
  text-align: center;
  animation: card-rise var(--slow);
}

.flag {
  position: relative;
  z-index: 1;
  width: min(100%, 340px);
  aspect-ratio: 3 / 2;
  margin: 0 auto;
  object-fit: contain;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 18px 38px rgba(31, 42, 82, 0.16), var(--inner-highlight);
}

.country-name {
  position: relative;
  z-index: 1;
  color: var(--brand);
  font-size: 1.18rem;
  font-weight: 900;
}

.question-card h2,
.question-card form,
.question-card .feedback,
.question-card [data-next],
.question-card .answer-hint {
  position: relative;
  z-index: 1;
}

.answer-hint {
  display: grid;
  min-width: 0;
  gap: var(--space-2);
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.58);
  text-align: left;
}

.answer-hint-label {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 780;
}

.answer-pattern {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 12px;
}

.letter-group {
  display: inline-flex;
  max-width: 100%;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
}

.letter-box {
  display: inline-grid;
  width: clamp(31px, 8vw, 38px);
  min-height: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-bottom: 3px solid rgba(38, 103, 184, 0.58);
  border-radius: 13px;
  padding: 0;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 8px 18px rgba(31, 42, 82, 0.08), var(--inner-highlight);
  font-size: 1.06rem;
  font-weight: 900;
  text-align: center;
  text-transform: uppercase;
  transition: background var(--fast), border-color var(--fast), box-shadow var(--fast), transform var(--fast);
}

.letter-box:focus {
  border-color: rgba(38, 103, 184, 0.7);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 0 0 5px rgba(38, 103, 184, 0.12), 0 10px 22px rgba(31, 42, 82, 0.12);
}

.letter-box.is-correct {
  color: #fff;
  border-color: rgba(22, 128, 87, 0.82);
  background: linear-gradient(135deg, #168057, #27a278);
  box-shadow: 0 10px 24px rgba(22, 128, 87, 0.2), var(--inner-highlight);
}

.letter-box.is-incorrect {
  color: #fff;
  border-color: rgba(184, 64, 85, 0.82);
  background: linear-gradient(135deg, #b84055, #d06469);
  box-shadow: 0 10px 24px rgba(184, 64, 85, 0.18), var(--inner-highlight);
}

.answer-form {
  display: grid;
  min-width: 0;
  gap: var(--space-3);
  text-align: left;
}

.feedback {
  border-radius: var(--radius-md);
  padding: 15px 16px;
  color: var(--ink);
  font-weight: 820;
  animation: feedback-in var(--medium);
}

.feedback.correct {
  border-color: rgba(22, 128, 87, 0.28);
  background: rgba(230, 249, 239, 0.74);
}

.feedback.incorrect {
  border-color: rgba(184, 64, 85, 0.24);
  background: rgba(255, 238, 241, 0.78);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.result-stat {
  padding: 16px;
  border-radius: var(--radius-md);
}

.result-stat strong {
  display: block;
  font-size: 1.42rem;
  letter-spacing: 0;
}

.result-stat span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 760;
}

.share-message {
  min-height: 1.4em;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 740;
  text-align: center;
}

.missed-list,
.leaderboard-list {
  display: grid;
  gap: var(--space-2);
}

.missed-item,
.leaderboard-row {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  align-items: center;
  gap: var(--space-3);
  padding: 13px;
  border-radius: var(--radius-md);
  animation: row-in var(--medium);
}

.leaderboard-row {
  width: 100%;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.missed-item img {
  width: 50px;
  aspect-ratio: 3 / 2;
  object-fit: contain;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-sm);
}

.missed-item p,
.leaderboard-row p {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.4;
}

.rank {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 999px;
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: 0 10px 20px rgba(38, 59, 130, 0.18), var(--inner-highlight);
  font-weight: 900;
}

.locked-breakdown {
  position: relative;
  overflow: hidden;
  min-height: 130px;
  align-content: center;
}

.locked-breakdown::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(135deg, rgba(38, 59, 130, 0.06) 0 10px, rgba(255, 255, 255, 0.18) 10px 20px),
    rgba(255, 255, 255, 0.42);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.locked-breakdown > * {
  position: relative;
  z-index: 1;
}

.expert-badge {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  margin-left: 6px;
  padding: 2px 8px;
  border: 1px solid rgba(38, 59, 130, 0.18);
  border-radius: 999px;
  color: var(--brand);
  background: rgba(255, 255, 255, 0.66);
  box-shadow: var(--inner-highlight);
  font-size: 0.72rem;
  font-weight: 860;
  vertical-align: middle;
}

.tabs {
  position: sticky;
  top: max(12px, env(safe-area-inset-top));
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 7px;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.58);
  box-shadow: var(--shadow-sm), var(--inner-highlight);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
}

.tab {
  min-height: 46px;
  padding: 8px 10px;
  color: var(--ink-soft);
  background: transparent;
  font-size: 0.88rem;
  font-weight: 830;
}

.tab.active {
  color: #fff;
  background: var(--gradient-primary);
  box-shadow: 0 10px 20px rgba(38, 59, 130, 0.2), var(--inner-highlight);
}

.empty-state {
  color: var(--muted);
  text-align: center;
}

@media (hover: hover) and (pointer: fine) {
  .button:not([disabled]):hover,
  .icon-button:hover,
  .tab:hover,
  .text-button:hover {
    transform: translateY(-2px);
  }

  .card:hover,
  .leaderboard-row:hover,
  .missed-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--inner-highlight);
  }
}

@media (min-width: 640px) {
  .app {
    padding-top: 36px;
  }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 520px) {
  .app {
    padding-inline: 12px;
  }

  .app[data-active-screen="quiz"] {
    padding-top: max(10px, env(safe-area-inset-top));
    padding-bottom: max(18px, env(safe-area-inset-bottom));
  }

  .app[data-active-screen="quiz"] .screen {
    gap: 10px;
  }

  .app[data-active-screen="quiz"] .quiz-top {
    grid-template-columns: 42px minmax(0, 1fr) 44px;
    gap: 9px;
  }

  .app[data-active-screen="quiz"] .icon-button {
    width: 42px;
    min-height: 42px;
    font-size: 1.1rem;
  }

  .app[data-active-screen="quiz"] .score-pill {
    min-width: 44px;
    height: 44px;
    font-size: 0.95rem;
  }

  .app[data-active-screen="quiz"] .eyebrow {
    font-size: 0.68rem;
  }

  .app[data-active-screen="quiz"] h1 {
    font-size: 1.45rem;
    line-height: 1.05;
  }

  .app[data-active-screen="quiz"] .progress-meta {
    font-size: 0.82rem;
  }

  .app[data-active-screen="quiz"] .progress-track {
    height: 8px;
  }

  .app[data-active-screen="quiz"] .question-card {
    gap: 10px;
    padding: 14px;
    border-radius: 22px;
  }

  .app[data-active-screen="quiz"] .flag {
    width: min(100%, 220px);
    border-radius: 14px;
    box-shadow: 0 10px 22px rgba(31, 42, 82, 0.12), var(--inner-highlight);
  }

  .app[data-active-screen="quiz"] .country-name {
    font-size: 1rem;
  }

  .app[data-active-screen="quiz"] .question-card h2 {
    font-size: 0.96rem;
  }

  .app[data-active-screen="quiz"] .answer-hint {
    gap: 7px;
    padding: 9px;
    border-radius: 16px;
  }

  .app[data-active-screen="quiz"] .answer-hint-label {
    font-size: 0.74rem;
    text-align: center;
  }

  .app[data-active-screen="quiz"] .answer-pattern {
    gap: 6px 8px;
  }

  .app[data-active-screen="quiz"] .letter-group {
    gap: 4px;
  }

  .app[data-active-screen="quiz"] .letter-box {
    width: clamp(24px, 7.2vw, 31px);
    min-height: 36px;
    height: 36px;
    border-radius: 10px;
    border-bottom-width: 2px;
    font-size: 0.92rem;
  }

  .app[data-active-screen="quiz"] .answer-form {
    gap: 9px;
  }

  .app[data-active-screen="quiz"] .answer-form label {
    font-size: 0.88rem;
  }

  .app[data-active-screen="quiz"] .button {
    min-height: 44px;
    padding: 10px 14px;
  }

  .app[data-active-screen="quiz"] .feedback {
    padding: 11px 13px;
  }
}

@supports not ((backdrop-filter: blur(20px)) or (-webkit-backdrop-filter: blur(20px))) {
  .card,
  .question-card,
  .info-panel,
  .result-stat,
  .empty-state,
  .feedback,
  .missed-item,
  .leaderboard-row,
  .tabs,
  .screen-center > .stack,
  .hero.compact,
  .modal-card {
    background: rgba(255, 255, 255, 0.94);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}

@keyframes screen-enter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes card-rise {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.985);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes feedback-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes row-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes modal-fade {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes modal-rise {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}