.quiz-page {
  --quiz-primary: #1f8199;
  --quiz-primary-soft: #74c7dc;
  --quiz-ink: #102f38;
  --quiz-muted: #536a70;
  --quiz-border: rgba(35, 143, 169, 0.18);
  --quiz-surface: rgba(255, 255, 255, 0.78);
  --quiz-shadow: 0 18px 48px rgba(25, 95, 112, 0.12);
  box-sizing: border-box;
  width: min(100%, 1140px);
  margin-inline: auto;
  padding: clamp(22px, 4vw, 48px);
  color: var(--quiz-ink);
}

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

.quiz-page [hidden] {
  display: none !important;
}

.quiz-page[data-quiz-authenticated="false"] .quiz-state-loading {
  display: none;
}

.quiz-page a:focus-visible,
.quiz-page button:focus-visible,
.quiz-page input:focus-visible + span {
  outline: 3px solid rgba(31, 129, 153, 0.42);
  outline-offset: 3px;
}

.quiz-hero,
.quiz-page-header,
.quiz-compact-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-block-end: 24px;
}

.quiz-hero h1,
.quiz-page-header h1 {
  margin: 4px 0 8px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.quiz-page-header h1 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-block-start: 14px;
}

.quiz-page-header p,
.quiz-lead {
  max-width: 700px;
  margin: 0;
  color: var(--quiz-muted);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.55;
}

.quiz-eyebrow {
  margin: 0;
  color: var(--quiz-primary);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.quiz-user-pill,
.quiz-session-meta,
.quiz-level-status,
.quiz-category-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--quiz-border);
  border-radius: 999px;
  background: var(--quiz-surface);
  padding: 9px 14px;
  color: var(--quiz-muted);
  box-shadow: 0 10px 24px rgba(25, 95, 112, 0.08);
  backdrop-filter: blur(18px) saturate(150%);
}

.quiz-user-pill strong,
.quiz-session-meta strong {
  color: var(--quiz-ink);
}

.quiz-subnav,
.quiz-tabs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-block-end: 24px;
}

.quiz-subnav a,
.quiz-subnav button,
.quiz-tabs a,
.quiz-back-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border: 1px solid var(--quiz-border);
  border-radius: 999px;
  background: var(--quiz-surface);
  padding: 9px 15px;
  color: var(--quiz-muted);
  font-weight: 700;
  text-decoration: none;
}

.quiz-subnav a,
.quiz-subnav button {
  height: 44px;
  margin: 0;
}

.quiz-subnav a,
.quiz-subnav button {
  gap: 8px;
}

.quiz-subnav button {
  font: inherit;
  cursor: pointer;
}

.quiz-subnav a svg,
.quiz-subnav button svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  fill: currentColor;
}

.quiz-subnav a:hover,
.quiz-subnav button:hover,
.quiz-tabs a:hover,
.quiz-tabs a[aria-current="page"],
.quiz-back-link:hover {
  color: var(--quiz-primary);
  background: rgba(255, 255, 255, 0.94);
}

.quiz-level-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.quiz-auth-gate {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(228, 247, 251, 0.76)),
    var(--quiz-surface);
  padding: clamp(22px, 4vw, 38px);
  box-shadow: var(--quiz-shadow);
  backdrop-filter: blur(22px) saturate(155%);
}

.quiz-auth-gate-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: rgba(116, 199, 220, 0.2);
  color: var(--quiz-primary);
}

.quiz-auth-gate-icon svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.quiz-auth-gate h2 {
  margin: 7px 0 8px;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.quiz-auth-gate-content > p:not(.quiz-eyebrow),
.quiz-auth-register p {
  max-width: 760px;
  margin: 0;
  color: var(--quiz-muted);
  line-height: 1.55;
}

.quiz-auth-actions {
  margin-block: 20px;
}

.quiz-auth-register {
  border-block-start: 1px solid var(--quiz-border);
  padding-block-start: 18px;
}

.quiz-auth-register > strong {
  display: block;
  margin-block-end: 4px;
}

.quiz-store-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-block-start: 14px;
}

.quiz-store-links a {
  display: inline-flex;
  border-radius: 7px;
}

.quiz-store-links img {
  display: block;
  width: auto;
  height: 38px;
}

.quiz-level-card,
.quiz-panel,
.quiz-result-hero,
.quiz-result-breakdown,
.quiz-leaderboard-panel,
.quiz-history-panel,
.quiz-question-card {
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.88), rgba(228, 247, 251, 0.72)),
    var(--quiz-surface);
  box-shadow: var(--quiz-shadow);
  backdrop-filter: blur(22px) saturate(155%);
}

.quiz-level-card {
  position: relative;
  min-height: 310px;
  overflow: hidden;
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.quiz-level-card::before {
  content: "";
  position: absolute;
  inset-block-start: -70px;
  inset-inline-end: -55px;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  background: var(--level-glow, rgba(116, 199, 220, 0.25));
}

.quiz-level-card[data-level="novice"] { --level-glow: rgba(134, 221, 198, 0.38); }
.quiz-level-card[data-level="intermediate"] { --level-glow: rgba(255, 198, 111, 0.38); }
.quiz-level-card[data-level="expert"] { --level-glow: rgba(191, 193, 239, 0.42); }

.quiz-level-card h2 {
  position: relative;
  margin: 18px 0 8px;
  font-size: 1.55rem;
}

.quiz-level-card p {
  position: relative;
  margin: 0 0 18px;
  color: var(--quiz-muted);
  line-height: 1.5;
}

.quiz-level-card .quiz-level-facts {
  align-self: flex-start;
  margin-block-end: 18px;
  border-radius: 999px;
  background: rgba(116, 199, 220, 0.14);
  padding: 6px 10px;
  color: var(--quiz-primary);
  font-size: 0.78rem;
  font-weight: 800;
}

.quiz-level-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-block: auto 20px;
}

.quiz-level-metric {
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.62);
  padding: 11px;
}

.quiz-level-metric span {
  display: block;
  color: var(--quiz-muted);
  font-size: 0.75rem;
}

.quiz-level-metric strong {
  display: block;
  margin-block-start: 3px;
  font-size: 1.05rem;
}

.quiz-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin: 0;
  border: 1px solid transparent;
  border-radius: 14px;
  padding: 11px 18px;
  font: inherit;
  font-weight: 750;
  text-align: center;
  text-decoration: none !important;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.quiz-button:hover:not(:disabled):not([aria-disabled="true"]) { transform: translateY(-1px); }
.quiz-button:disabled,
.quiz-button[aria-disabled="true"] { opacity: 0.48; cursor: not-allowed; box-shadow: none; }

.quiz-button-primary {
  background: linear-gradient(135deg, #1f8199, #23738a);
  color: #fff;
  box-shadow: 0 14px 30px rgba(31, 129, 153, 0.23);
}

.quiz-button-secondary {
  border-color: var(--quiz-border);
  background: rgba(255, 255, 255, 0.78);
  color: var(--quiz-primary);
}

.quiz-button-danger-ghost {
  border-color: rgba(180, 83, 72, 0.24);
  background: rgba(255, 255, 255, 0.55);
  color: #9b4138;
}

.quiz-level-card .quiz-button { width: 100%; }

.quiz-state {
  display: grid;
  place-items: center;
  min-height: 170px;
  border: 1px dashed var(--quiz-border);
  border-radius: 20px;
  padding: 24px;
  text-align: center;
  color: var(--quiz-muted);
}

.quiz-state-error {
  border-style: solid;
  border-color: rgba(180, 83, 72, 0.28);
  background: rgba(255, 241, 238, 0.84);
  color: #853c34;
}

.quiz-state-error p { margin: 4px 0; }

.quiz-spinner {
  width: 34px;
  height: 34px;
  border: 3px solid rgba(35, 143, 169, 0.16);
  border-block-start-color: var(--quiz-primary);
  border-radius: 50%;
  animation: quiz-spin 0.8s linear infinite;
}

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

.quiz-prestart {
  max-width: 780px;
  margin-inline: auto;
  padding: clamp(24px, 5vw, 42px);
}

.quiz-prestart h1 { margin-block-start: 0; font-size: clamp(1.8rem, 4vw, 2.6rem); }
.quiz-prestart-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 22px 0; }
.quiz-prestart-item { border-radius: 15px; background: rgba(255,255,255,.62); padding: 14px; }
.quiz-prestart-item span { display: block; color: var(--quiz-muted); font-size: .8rem; }
.quiz-prestart-item strong { display: block; margin-top: 4px; }

.quiz-question-shell {
  width: min(100%, 820px);
  margin-inline: auto;
}

.quiz-progress-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 16px;
  margin-block-end: 14px;
}

.quiz-progress-row progress {
  width: 100%;
  height: 10px;
  border: 0;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(116, 199, 220, 0.2);
}

.quiz-progress-row progress::-webkit-progress-bar { background: rgba(116, 199, 220, 0.2); border-radius: 999px; }
.quiz-progress-row progress::-webkit-progress-value { background: linear-gradient(90deg, var(--quiz-primary), var(--quiz-primary-soft)); border-radius: 999px; }
.quiz-progress-row progress::-moz-progress-bar { background: linear-gradient(90deg, var(--quiz-primary), var(--quiz-primary-soft)); border-radius: 999px; }
.quiz-progress-row time { color: var(--quiz-muted); font-size: .86rem; font-weight: 700; }

.quiz-question-card {
  min-width: 0;
  margin: 0;
  padding: clamp(22px, 4vw, 38px);
}

.quiz-question-card legend {
  float: inline-start;
  width: 100%;
  margin-block-end: 24px;
  padding: 0;
  color: var(--quiz-ink);
  font-size: clamp(1.22rem, 2.4vw, 1.65rem);
  font-weight: 750;
  line-height: 1.42;
}

.quiz-answer-list { clear: both; display: grid; gap: 12px; }
.quiz-answer-option { position: relative; display: block; cursor: pointer; }
.quiz-answer-option input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.quiz-answer-option span {
  display: flex;
  align-items: center;
  min-height: 58px;
  border: 1px solid var(--quiz-border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.7);
  padding: 13px 16px;
  color: var(--quiz-ink);
  line-height: 1.4;
  transition: border-color .16s ease, background .16s ease, transform .16s ease;
}
.quiz-answer-option:hover span { transform: translateY(-1px); border-color: rgba(31,129,153,.45); }
.quiz-answer-option input:checked + span {
  border-color: var(--quiz-primary);
  background: rgba(116, 199, 220, 0.22);
  box-shadow: inset 4px 0 0 var(--quiz-primary);
}

.quiz-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-block-start: 18px;
}

.quiz-result { display: grid; gap: 20px; }
.quiz-result-hero { padding: clamp(24px, 5vw, 42px); text-align: center; }
.quiz-score-ring {
  display: grid;
  place-items: center;
  width: 160px;
  height: 160px;
  margin: 0 auto 20px;
  border: 10px solid rgba(116,199,220,.25);
  border-block-start-color: var(--quiz-primary);
  border-radius: 50%;
}
.quiz-score-ring strong { display: block; font-size: 2.35rem; line-height: 1; }
.quiz-score-ring span { color: var(--quiz-muted); font-size: .85rem; }
.quiz-result-hero h1 { margin: 0 0 8px; }
.quiz-result-summary { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; margin-top: 24px; }
.quiz-result-stat { border-radius: 15px; background: rgba(255,255,255,.62); padding: 14px; }
.quiz-result-stat span { display: block; color: var(--quiz-muted); font-size: .78rem; }
.quiz-result-stat strong { display: block; margin-top: 4px; font-size: 1.2rem; }
.quiz-result-breakdown { padding: clamp(20px, 4vw, 32px); }
.quiz-result-breakdown h2 { margin-top: 0; }
.quiz-category-results { display: grid; gap: 10px; }
.quiz-category-row { display: grid; grid-template-columns: minmax(170px, 1.2fr) minmax(120px, 2fr) 62px; gap: 14px; align-items: center; }
.quiz-category-track { height: 9px; overflow: hidden; border-radius: 999px; background: rgba(116,199,220,.18); }
.quiz-category-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--quiz-primary), var(--quiz-primary-soft)); }
.quiz-category-value { text-align: end; font-weight: 750; }

.quiz-leaderboard-panel,
.quiz-history-panel { overflow: hidden; padding: 18px; }
.quiz-history-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.quiz-history-card,
.quiz-history-latest {
  border: 1px solid var(--quiz-border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.46);
  padding: 18px;
}
.quiz-history-card h2,
.quiz-history-latest h2,
.quiz-history-table-title { margin: 0 0 14px; font-size: 1.08rem; }
.quiz-history-card-stats { display: grid; gap: 8px; }
.quiz-history-card .quiz-result-stat { padding: 10px; }
.quiz-history-card .quiz-result-stat strong { font-size: 1rem; }
.quiz-history-latest { margin-block-start: 18px; }
.quiz-history-table-title { margin-block-start: 24px; }
.quiz-table-wrap { overflow-x: auto; }
.quiz-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.quiz-table th,
.quiz-table td { padding: 13px 14px; border-bottom: 1px solid var(--quiz-border); text-align: start; }
.quiz-table th { color: var(--quiz-muted); font-size: .75rem; letter-spacing: .06em; text-transform: uppercase; }
.quiz-table tbody tr:last-child td { border-bottom: 0; }
.quiz-table tr.is-current { background: rgba(116,199,220,.18); font-weight: 700; }
.quiz-rank { display: inline-grid; place-items: center; min-width: 34px; height: 34px; border-radius: 50%; background: rgba(116,199,220,.2); font-weight: 800; }
.quiz-rank.is-podium { background: linear-gradient(145deg, #ffe4a4, #ffc66f); color: #5b441a; }
.quiz-current-rank { margin-block-start: 16px; border: 1px solid var(--quiz-border); border-radius: 16px; padding: 14px; background: rgba(116,199,220,.13); }
.quiz-empty { padding: 32px 16px; text-align: center; color: var(--quiz-muted); }

.quiz-rules-card { padding: clamp(22px, 5vw, 42px); }
.quiz-rules-list { list-style: none; counter-reset: quiz-rule; margin: 0; padding: 0; display: grid; gap: 14px; }
.quiz-rules-list li { counter-increment: quiz-rule; display: grid; grid-template-columns: 44px 1fr; column-gap: 14px; align-items: center; }
.quiz-rules-list li::before { content: counter(quiz-rule); grid-row: 1 / span 2; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 13px; background: rgba(116,199,220,.22); color: var(--quiz-primary); font-weight: 800; }
.quiz-rules-list strong,
.quiz-rules-list span { grid-column: 2; }
.quiz-rules-list span { margin-top: 3px; color: var(--quiz-muted); line-height: 1.45; }

@media (max-width: 820px) {
  .quiz-level-grid { grid-template-columns: 1fr; }
  .quiz-history-summary { grid-template-columns: 1fr; }
  .quiz-level-card { min-height: 0; }
  .quiz-hero { flex-direction: column; }
  .quiz-result-summary { grid-template-columns: 1fr; }
  .quiz-category-row { grid-template-columns: 1fr 58px; gap: 6px 12px; }
  .quiz-category-track { grid-column: 1 / -1; grid-row: 2; }
}

@media (max-width: 560px) {
  .quiz-page { padding: 74px 14px 28px; }
  .quiz-subnav { display: grid; grid-template-columns: 1fr; }
  .quiz-subnav a,
  .quiz-subnav button { justify-content: center; }
  .quiz-compact-header { display: grid; }
  .quiz-session-meta { justify-self: start; }
  .quiz-prestart-grid { grid-template-columns: 1fr; }
  .quiz-actions { flex-direction: column-reverse; }
  .quiz-actions .quiz-button { width: 100%; }
  .quiz-question-card { border-radius: 20px; }
  .quiz-auth-gate { grid-template-columns: 1fr; }
  .quiz-auth-gate-icon { width: 50px; height: 50px; border-radius: 15px; }
}

@media (prefers-color-scheme: dark) {
  .quiz-page {
    --quiz-ink: #eef9fb;
    --quiz-muted: #b7d2d8;
    --quiz-border: rgba(110, 209, 230, 0.2);
    --quiz-surface: rgba(18, 38, 42, 0.72);
    --quiz-shadow: 0 18px 48px rgba(0, 0, 0, 0.3);
  }
  .quiz-level-card,
  .quiz-panel,
  .quiz-result-hero,
  .quiz-result-breakdown,
  .quiz-leaderboard-panel,
  .quiz-history-panel,
  .quiz-question-card {
    border-color: var(--quiz-border);
    background: linear-gradient(135deg, rgba(34,84,94,.78), rgba(18,38,42,.72));
  }
  .quiz-auth-gate {
    border-color: var(--quiz-border);
    background: linear-gradient(135deg, rgba(34,84,94,.78), rgba(18,38,42,.72));
  }
  .quiz-user-pill,
  .quiz-session-meta,
  .quiz-level-status,
  .quiz-category-pill,
  .quiz-subnav a,
  .quiz-tabs a,
  .quiz-back-link,
  .quiz-level-metric,
  .quiz-prestart-item,
  .quiz-answer-option span,
  .quiz-result-stat {
    background: rgba(255,255,255,.08);
    color: var(--quiz-muted);
  }
  .quiz-answer-option input:checked + span { background: rgba(110,209,230,.16); color: var(--quiz-ink); }
  .quiz-history-card,
  .quiz-history-latest { background: rgba(255,255,255,.06); }
  .quiz-state-error { background: rgba(100,35,30,.42); color: #ffd8d2; }
  .quiz-table tr.is-current { background: rgba(110,209,230,.13); }
}

@media (prefers-reduced-motion: reduce) {
  .quiz-page *,
  .quiz-page *::before,
  .quiz-page *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}