:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-soft: #1f2937;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #22d3ee;
  --field-bg: #0b1220;
  --field-border: #526179;
  --field-border-strong: #6b7a96;
  --field-focus: #38e1ff;
  --good: #22c55e;
  --warn: #f59e0b;
  --bad: #ef4444;
  --border: #374151;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(circle at 20% 0%, #172554 0%, var(--bg) 50%);
  color: var(--text);
  min-height: 100vh;
  min-height: 100svh;
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
}

body.gd-player {
  background: #0f172a;
  overflow: auto;
}

body.gd-player::before,
body.gd-player::after {
  display: none;
}

body.gd-player #app {
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  padding: clamp(10px, 2.5vmin, 24px);
  padding-top: clamp(70px, 10vmin, 88px);
}

body.gd-player .level-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(210px, 100%), 1fr));
}

body.gd-player .quiz-card,
body.gd-player .result-card,
body.gd-player .level-card {
  border-radius: 10px;
}

body.gd-player .player-rank-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
}

body.gd-player .footer-badge-wrap,
body.gd-player .topbar {
  display: none;
}

.gd-header {
  position: fixed;
  top: clamp(10px, 2vmin, 16px);
  left: 50%;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  width: max-content;
  max-width: calc(100% - 20px);
  padding: 8px 12px;
  border: 1px solid color-mix(in srgb, var(--field-border) 70%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 66%, transparent);
  box-shadow: 0 12px 26px rgba(2, 6, 23, 0.28);
  backdrop-filter: blur(10px);
  transform: translateX(-50%);
}

.gd-header h1 {
  margin: 0;
  min-width: 0;
  max-width: min(48vw, 520px);
  overflow: hidden;
  color: var(--text);
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: clamp(1.25rem, 4vmin, 2rem);
  line-height: 1.1;
}

.gd-scores-button,
.gd-audio-button {
  justify-self: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 10px;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  backdrop-filter: blur(8px);
  color: var(--text);
  font-size: 1.25rem;
  overflow: hidden;
}

.gd-scores-button::before {
  content: "🏆";
  color: var(--text);
  font-size: 1.28rem;
  line-height: 1;
}

.gd-audio-button {
  position: relative;
}

.gd-audio-button.is-muted::after {
  content: "";
  position: absolute;
  left: 9px;
  right: 9px;
  top: 50%;
  height: 2px;
  border-radius: 999px;
  background: var(--bad);
  transform: rotate(42deg);
  transform-origin: center;
}

@media (max-width: 640px) {
  .gd-header {
    gap: 12px;
  }

  .gd-header h1 {
    font-size: 1.16rem;
    max-width: 42vw;
  }

  body.gd-player .player-rank-strip {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  body.gd-player .player-rank-strip .btn {
    width: 100%;
  }
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 56vw;
  height: 56vw;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: -1;
  opacity: 0.32;
}

body::before {
  left: -20vw;
  top: -24vw;
  background: #0ea5e9;
  animation: bg-float-a 18s ease-in-out infinite;
}

body::after {
  right: -24vw;
  bottom: -26vw;
  background: #a855f7;
  animation: bg-float-b 22s ease-in-out infinite;
}

.app-shell {
  width: min(100%, 1440px);
  margin: 0 auto;
  padding: clamp(16px, 3vw, 32px);
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

#app {
  flex: 1;
  min-height: auto;
}

.topbar h1,
.topbar-heading {
  margin: 0;
  font-size: 2rem;
}

.topbar-title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  margin: 0;
  position: relative;
}

.language-trigger {
  border: 0;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: box-shadow 140ms ease, transform 120ms ease;
}

.language-trigger:hover,
.language-trigger:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 28%, transparent);
}

.language-trigger:active {
  transform: translateY(1px);
}

.language-menu {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  z-index: 30;
  display: grid;
  gap: 0;
  min-width: 58px;
  padding: 4px;
  border: 1.5px solid var(--field-border);
  border-radius: 10px;
  background: color-mix(in srgb, var(--field-bg) 88%, #1f2937);
  box-shadow: 0 12px 24px rgba(2, 6, 23, 0.34);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 140ms ease, transform 140ms ease, visibility 140ms ease;
}

.language-switcher.is-open .language-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-menu form {
  margin: 0;
}

.language-option {
  width: 100%;
  height: 38px;
  padding: 0 8px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 120ms ease;
}

.language-option.is-active {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
}

.language-option:hover,
.language-option:focus-visible {
  outline: none;
  background: color-mix(in srgb, var(--accent) 22%, transparent);
}

.language-flag {
  width: 30px;
  height: 20px;
  display: block;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, var(--border) 70%, #ffffff);
  border-radius: 4px;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 12%, transparent);
  object-fit: cover;
  overflow: hidden;
}

.topbar {
  margin-bottom: 12px;
}

.topbar-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topbar-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.quiz-search {
  position: relative;
  width: min(360px, 36vw);
  min-width: 240px;
}

.quiz-search-input {
  width: 100%;
  min-height: 44px;
  border: 1.5px solid var(--field-border);
  background: color-mix(in srgb, var(--field-bg) 88%, #1f2937);
  color: var(--text);
  border-radius: 10px;
  padding: 11px 14px;
  font: inherit;
  font-weight: 600;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
  transition: background 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.quiz-search-input::placeholder {
  color: color-mix(in srgb, var(--muted) 84%, #ffffff);
}

.quiz-search-input:hover {
  border-color: var(--field-border-strong);
}

.quiz-search-input:focus {
  outline: none;
  border-color: var(--field-focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--field-focus) 20%, transparent);
}

.quiz-search-results {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: min(420px, 90vw);
  max-height: 320px;
  overflow-y: auto;
  z-index: 20;
  display: grid;
  gap: 6px;
  padding: 8px;
  border: 1px solid color-mix(in srgb, var(--field-border) 80%, var(--border));
  border-radius: 12px;
  background: color-mix(in srgb, #0b1220 92%, #1f2937);
  box-shadow: 0 18px 36px rgba(2, 6, 23, 0.42);
}

.quiz-search-results[hidden] {
  display: none;
}

.quiz-search-result-row,
.quiz-search-empty {
  border-radius: 9px;
  padding: 10px 11px;
}

.quiz-search-result-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
}

.quiz-search-result-row:hover,
.quiz-search-result-row:focus-within {
  background: color-mix(in srgb, var(--accent) 13%, transparent);
}

.quiz-search-result {
  display: grid;
  gap: 3px;
  color: var(--text);
  text-decoration: none;
  min-width: 0;
}

.quiz-search-result:focus {
  outline: none;
}

.quiz-search-result span {
  font-weight: 800;
}

.quiz-search-result small,
.quiz-search-empty {
  color: var(--muted);
}

.quiz-search-edit {
  border: 1px solid color-mix(in srgb, var(--field-border) 80%, var(--border));
  border-radius: 8px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  padding: 7px 10px;
  text-decoration: none;
}

.quiz-search-edit:hover,
.quiz-search-edit:focus {
  outline: none;
  border-color: var(--field-focus);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
}

.icon-btn {
  min-width: 44px;
  height: 44px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.topbar p {
  margin: 8px 0 0;
  color: var(--muted);
}

.footer-badge-wrap {
  margin-top: 16px;
  display: flex;
  justify-content: center;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-soft) 82%, #0b1220);
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 120ms ease, color 120ms ease, box-shadow 120ms ease;
}

.footer-badge:hover {
  color: var(--text);
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 14%, transparent);
}

.level-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.level-card,
.quiz-card,
.result-card {
  background: linear-gradient(160deg, var(--panel), var(--panel-soft));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.stack-card.quiz-card {
  padding: clamp(18px, 2.2vw, 28px);
}

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

.corner-ribbon {
  position: absolute;
  bottom: 6px;
  right: -46px;
  transform: rotate(-35deg);
  min-width: 148px;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  padding: 6px 8px;
  z-index: 2;
  box-shadow: 0 8px 16px rgba(2, 6, 23, 0.35);
}

.corner-ribbon-pass {
  color: #052e16;
  background: linear-gradient(135deg, #86efac, #22c55e);
  border: 1px solid color-mix(in srgb, var(--good) 65%, #052e16);
}

.corner-ribbon-new {
  color: #422006;
  background: linear-gradient(135deg, #fcd34d, #f59e0b);
  border: 1px solid color-mix(in srgb, var(--warn) 68%, #422006);
}

.corner-ribbon-fail {
  color: #450a0a;
  background: linear-gradient(135deg, #fca5a5, #ef4444);
  border: 1px solid color-mix(in srgb, var(--bad) 70%, #450a0a);
}

.level-card-passed {
  border-color: color-mix(in srgb, var(--good) 68%, var(--border));
}

.level-card-new {
  border-color: color-mix(in srgb, var(--warn) 62%, var(--border));
}

.level-card-failed {
  border-color: color-mix(in srgb, var(--bad) 62%, var(--border));
}

.level-card-passed:hover {
  border-color: color-mix(in srgb, var(--good) 82%, #14532d);
  box-shadow: 0 10px 28px rgba(34, 197, 94, 0.18);
}

.level-card-new:hover {
  border-color: color-mix(in srgb, var(--warn) 78%, #78350f);
  box-shadow: 0 10px 28px rgba(245, 158, 11, 0.18);
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  gap: 18px;
  padding-bottom: 18px;
}

.stack-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.builder-header,
.builder-toolbar,
.question-toolbar,
.course-list-header,
.course-list-item,
.inline-fields,
.level-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.builder-toolbar,
.question-toolbar,
.inline-fields {
  flex-wrap: wrap;
}

.builder-header {
  align-items: flex-start;
  padding-bottom: 18px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
}

.builder-header .hint {
  margin-bottom: 0;
}

.builder-toolbar {
  margin-top: 6px;
}

.question-toolbar,
.level-header {
  margin-bottom: 4px;
}

.builder-form,
.level-stack,
.question-stack,
.question-card,
.field-stack,
.course-meta {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.builder-form {
  margin-top: 4px;
  gap: 24px;
}

.level-stack,
.question-stack {
  gap: 18px;
}

.level-builder-card > .field-stack + .question-stack {
  margin-top: 14px;
}

.question-stack + .question-toolbar {
  margin-top: 18px;
}

.level-add-wrap {
  display: grid;
  justify-items: center;
  gap: 18px;
  margin-top: 8px;
}

.turnstile-field {
  display: flex;
  justify-content: flex-end;
  min-height: 65px;
}

.distribution-settings {
  gap: 18px;
}

.section-divider {
  width: 100%;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    color-mix(in srgb, var(--field-border) 72%, transparent) 0 12px,
    transparent 12px 22px
  );
}

.builder-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.builder-field-wide {
  grid-column: 1 / -1;
}

.edit-unlock-card {
  max-width: 760px;
}

.edit-unlock-form {
  max-width: 560px;
}

.checkbox-field {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  color: #c4ccda;
  font-weight: 700;
  cursor: pointer;
}

.field-stack .checkbox-field input {
  width: 18px;
  min-width: 18px;
  height: 18px;
  padding: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.field-stack input:disabled {
  cursor: not-allowed;
  opacity: 0.62;
  background: color-mix(in srgb, var(--field-bg) 68%, #111827);
}

.field-stack {
  gap: 7px;
}

.field-stack label,
.question-options-title,
.hint {
  color: var(--muted);
}

.field-stack label {
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #c4ccda;
}

.field-stack input,
.field-stack textarea,
.field-stack select {
  width: 100%;
  border: 1.5px solid var(--field-border);
  background: color-mix(in srgb, var(--field-bg) 88%, #1f2937);
  color: var(--text);
  border-radius: 10px;
  padding: 13px 15px;
  font: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035), 0 1px 0 rgba(255, 255, 255, 0.02);
  transition: background 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.field-stack input:hover,
.field-stack textarea:hover,
.field-stack select:hover {
  border-color: var(--field-border-strong);
  background: color-mix(in srgb, var(--field-bg) 80%, #1f2937);
}

.field-stack textarea {
  min-height: 132px;
  resize: vertical;
  line-height: 1.45;
}

.field-stack input:focus,
.field-stack textarea:focus,
.field-stack select:focus {
  outline: none;
  border-color: var(--field-focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--field-focus) 20%, transparent), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.btn-link {
  color: var(--accent);
  text-decoration: none;
}

.btn-danger {
  background: color-mix(in srgb, #1f1118 72%, var(--panel));
  border-color: color-mix(in srgb, var(--bad) 76%, var(--border));
  color: #fecaca;
}

.btn-secondary {
  background: color-mix(in srgb, #182235 80%, var(--panel));
  border-color: color-mix(in srgb, var(--field-border-strong) 70%, var(--border));
  color: var(--text);
}

.level-builder-card,
.question-card,
.course-list-item,
.notice-card {
  background: rgba(15, 23, 42, 0.68);
  border: 1px solid color-mix(in srgb, var(--field-border) 72%, var(--border));
  border-radius: 14px;
  padding: 18px;
}

.level-builder-card {
  background: rgba(15, 23, 42, 0.46);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.question-card {
  background: rgba(10, 18, 34, 0.82);
  border-color: color-mix(in srgb, var(--field-border) 84%, var(--accent) 16%);
}

.question-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.correct-answer-field {
  margin-top: 4px;
}

.question-options-title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
}

.course-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.course-list-item {
  align-items: flex-start;
}

.course-list-item h3,
.builder-header h2,
.course-list-header h2,
.level-header h3,
.question-toolbar h4 {
  margin: 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 6px 10px;
  border: 1px solid color-mix(in srgb, var(--field-border) 70%, var(--border));
  background: rgba(17, 24, 39, 0.8);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.alert {
  border-radius: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
}

.alert-error {
  background: rgba(127, 29, 29, 0.28);
  border-color: color-mix(in srgb, var(--bad) 60%, var(--border));
  color: #fecaca;
}

.alert-success {
  background: rgba(20, 83, 45, 0.28);
  border-color: color-mix(in srgb, var(--good) 60%, var(--border));
  color: #bbf7d0;
}

.empty-state {
  color: var(--muted);
  margin: 0;
}

@media (max-width: 900px) {
  .page-grid,
  .builder-split,
  .question-options {
    grid-template-columns: 1fr;
  }

  .builder-header,
  .builder-toolbar,
  .question-toolbar,
  .level-header {
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .topbar-main {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar-controls,
  .quiz-search {
    width: 100%;
  }

  .quiz-search {
    min-width: 0;
  }

  .quiz-search-results {
    left: 0;
    right: auto;
    width: 100%;
  }

  .stack-card.quiz-card,
  .level-builder-card,
  .question-card {
    padding: 14px;
  }

  .builder-header,
  .builder-toolbar,
  .question-toolbar,
  .level-header {
    flex-direction: column;
  }

  .builder-toolbar .btn,
  .question-toolbar .btn,
  .level-header .btn {
    width: 100%;
  }
}

.level-card-failed:hover {
  border-color: color-mix(in srgb, var(--bad) 80%, #7f1d1d);
  box-shadow: 0 10px 28px rgba(239, 68, 68, 0.18);
}

.level-card:hover,
.quiz-card:hover,
.review-item:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  box-shadow: 0 10px 28px rgba(6, 182, 212, 0.14);
}

.level-card h3 {
  margin: 0 0 10px;
}

.stats {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.stat-label {
  color: var(--muted);
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-pass {
  background: color-mix(in srgb, var(--good) 20%, transparent);
  color: var(--good);
  border: 1px solid color-mix(in srgb, var(--good) 45%, transparent);
}

.badge-fail {
  background: color-mix(in srgb, var(--bad) 20%, transparent);
  color: #fda4af;
  border: 1px solid color-mix(in srgb, var(--bad) 45%, transparent);
}

.badge-new {
  background: color-mix(in srgb, var(--warn) 20%, transparent);
  color: #fcd34d;
  border: 1px solid color-mix(in srgb, var(--warn) 45%, transparent);
}

.btn {
  border: 1.5px solid var(--field-border);
  background: color-mix(in srgb, #111827 86%, #1f2937);
  color: var(--text);
  border-radius: 9px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 600;
  min-height: 40px;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}

.btn:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, #111827 72%, #164e63);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent);
}

.btn:active {
  transform: translateY(1px) scale(0.99);
}

.btn-primary {
  background: linear-gradient(135deg, #06b6d4, #0f766e);
  border-color: color-mix(in srgb, var(--accent) 70%, #0f766e);
  color: #ecfeff;
}

.btn-danger {
  background: color-mix(in srgb, #1f1118 72%, var(--panel));
  border-color: color-mix(in srgb, var(--bad) 76%, var(--border));
  color: #fecaca;
}

.btn-secondary {
  background: color-mix(in srgb, #182235 80%, var(--panel));
  border-color: color-mix(in srgb, var(--field-border-strong) 70%, var(--border));
  color: var(--text);
}

.btn-danger:hover {
  border-color: #f87171;
  background: color-mix(in srgb, #451a1a 68%, #111827);
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.18);
}

.btn-secondary:hover {
  border-color: var(--field-focus);
  background: color-mix(in srgb, #172033 64%, #164e63);
}

.quiz-wrap {
  margin-top: 20px;
  display: grid;
  gap: 14px;
}

.quiz-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}

.progress-bar {
  width: 100%;
  height: 12px;
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #22d3ee, #14b8a6);
}

.question {
  font-size: 1.2rem;
  margin: 0;
}

.question-image-wrap {
  margin-top: 12px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: #0b1220;
}

.question-image {
  display: block;
  width: 100%;
  max-height: 280px;
  object-fit: cover;
}

.options {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.option {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  cursor: pointer;
  background: #0b1220;
  color: var(--text);
  font-size: 1rem;
  font-weight: 500;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.option:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.option.selected {
  border-color: #06b6d4;
  background: color-mix(in srgb, #0891b2 25%, #0b1220);
}

.option.correct {
  border-color: var(--good);
}

.option.wrong {
  border-color: var(--bad);
}

.actions {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.result-title {
  margin-top: 0;
}

.combo-text {
  margin: 8px 0;
  font-size: 1.2rem;
  font-weight: 800;
  color: #facc15;
  text-shadow: 0 0 14px rgba(250, 204, 21, 0.35);
}

.combo-toast {
  position: fixed;
  left: 50%;
  top: 18%;
  transform: translate(-50%, -16px) scale(0.96);
  opacity: 0;
  background: linear-gradient(135deg, #0f172a, #111827);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.01em;
  z-index: 2400;
  box-shadow: 0 12px 26px rgba(2, 6, 23, 0.45);
  transition: transform 220ms ease, opacity 220ms ease, border-color 180ms ease;
  pointer-events: none;
}

.combo-toast.show {
  transform: translate(-50%, 0) scale(1);
  opacity: 1;
}

.combo-toast-good {
  color: #86efac;
  border-color: color-mix(in srgb, var(--good) 60%, var(--border));
  text-shadow: 0 0 12px rgba(34, 197, 94, 0.3);
}

.combo-toast-bad {
  color: #fca5a5;
  border-color: color-mix(in srgb, var(--bad) 60%, var(--border));
  text-shadow: 0 0 12px rgba(239, 68, 68, 0.28);
}

.center {
  text-align: center;
}

.player-rank-strip {
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.leaderboard-card {
  margin-bottom: 14px;
}

.scores-page {
  display: grid;
  gap: 14px;
}

.scores-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.leaderboard-card h3 {
  margin: 0 0 10px;
}

.leaderboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.leaderboard-header h3 {
  margin: 0;
}

.scores-select {
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  min-width: 180px;
}

.scores-select:focus {
  outline: none;
  border-color: var(--accent);
}

.scores-name-message {
  margin: 6px 0 0;
  width: 100%;
  font-size: 0.92rem;
  min-height: 1.2rem;
  color: var(--muted);
}

.scores-name-message-success {
  color: #86efac;
}

.scores-name-message-error {
  color: #fca5a5;
}

.scores-name-message-muted {
  color: var(--muted);
}

.leaderboard-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.leaderboard-list li {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  background: #0b1220;
}

.leaderboard-pager {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.leaderboard-pager .btn {
  padding: 7px 11px;
}

.leader-rank {
  color: var(--accent);
  font-weight: 700;
}

.leader-name {
  font-weight: 600;
}

.leader-score {
  color: var(--muted);
  font-size: 0.92rem;
}

.level-result-board {
  margin-top: 14px;
  text-align: left;
}

.progress-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.progress-list li {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #0b1220;
  padding: 9px 10px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.review-list {
  display: grid;
  gap: 12px;
}

.review-item h3 {
  margin: 0;
}

.review-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.review-answer {
  margin: 8px 0 0;
}

.review-correct {
  color: #86efac;
}

.review-wrong {
  color: #fca5a5;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
}

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

.modal-card {
  width: min(440px, 100%);
  background: linear-gradient(160deg, var(--panel), var(--panel-soft));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}

.builder-created-modal {
  width: min(620px, 100%);
  display: grid;
  gap: 18px;
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  box-shadow: 0 22px 60px rgba(2, 6, 23, 0.55);
}

.builder-confirm-modal {
  width: min(540px, 100%);
  display: grid;
  gap: 18px;
  border-color: color-mix(in srgb, var(--accent) 34%, var(--border));
  box-shadow: 0 22px 60px rgba(2, 6, 23, 0.55);
}

.modal-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.modal-close-btn {
  font-size: 1.45rem;
  line-height: 1;
}

.modal-card h3 {
  margin: 0 0 8px;
}

.modal-title-row h3 {
  margin: 0;
}

.modal-card p {
  margin: 0;
  color: var(--muted);
}

.created-course-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.created-course-summary > div,
.confirm-course-preview > div {
  display: grid;
  gap: 5px;
  padding: 12px;
  border: 1px solid color-mix(in srgb, var(--field-border) 72%, var(--border));
  border-radius: 10px;
  background: rgba(11, 18, 32, 0.72);
}

.confirm-course-preview {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.created-course-summary strong,
.confirm-course-preview strong {
  overflow-wrap: anywhere;
}

.copy-link-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.copy-link-row input {
  min-width: 0;
}

.copy-status {
  min-height: 1.2rem;
}

.share-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.share-actions .btn {
  text-decoration: none;
}

.modal-form {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.modal-input {
  width: 100%;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 1rem;
}

.modal-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 14%, transparent);
}

.modal-error {
  margin: 0;
  color: #fca5a5;
  font-size: 0.92rem;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

@media (max-width: 640px) {
  .created-course-summary,
  .confirm-course-preview,
  .copy-link-row {
    grid-template-columns: 1fr;
  }

  .share-actions .btn,
  .modal-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

.confetti-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 2500;
}

.confetti-piece {
  position: absolute;
  top: -14px;
  width: 9px;
  height: 16px;
  opacity: 0.95;
  border-radius: 2px;
  animation-name: confetti-fall;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@keyframes confetti-fall {
  0% {
    transform: translate3d(0, -8vh, 0) rotate(0deg);
  }
  100% {
    transform: translate3d(var(--drift, 0px), 112vh, 0) rotate(720deg);
    opacity: 0;
  }
}

@keyframes bg-float-a {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(7vw, 4vw, 0) scale(1.08);
  }
}

@keyframes bg-float-b {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-6vw, -5vw, 0) scale(1.1);
  }
}