/* Premium module experience */
:root {
  --module-bg: #f5f7fb;
  --module-card-bg: #ffffff;
  --module-border: #e2e8f0;
  --module-text: #0f172a;
  --module-subtext: #475569;
  --module-accent: #4a6cff;
  --module-accent-dark: #324dc3;
  --module-green: #1db954;
}

.module-shell {
  background: var(--module-bg);
  padding: 2rem clamp(1rem, 4vw, 3rem) 3rem;
  min-height: 100vh;
}

.module-crumbs {
  max-width: 1200px;
  margin: 0 auto 1rem;
  display: flex;
  gap: .5rem;
  font-size: .9rem;
  color: var(--module-subtext);
}

.module-crumbs a {
  color: var(--module-accent);
  text-decoration: none;
}

.module-hero-card {
  background: radial-gradient(circle at top left, rgba(74,108,255,0.12), transparent 55%), var(--module-card-bg);
  border-radius: 28px;
  padding: clamp(1.75rem, 5vw, 3rem);
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.12);
  margin: 0 auto 2rem;
  max-width: 1200px;
}

.module-hero-card__eyebrow {
  text-transform: uppercase;
  font-size: .78rem;
  letter-spacing: .18em;
  color: var(--module-accent);
  font-weight: 700;
  margin-bottom: .5rem;
}

.module-hero-card__title {
  font-size: clamp(2rem, 3vw, 3rem);
  margin: 0;
  color: var(--module-text);
  font-weight: 800;
}

.module-hero-card__subtitle {
  color: var(--module-subtext);
  margin: .75rem 0 1.25rem;
  font-size: 1.05rem;
}

.module-hero-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  color: var(--module-subtext);
  font-weight: 600;
}

.module-hero-card__meta span {
  background: rgba(74, 108, 255, 0.08);
  color: var(--module-accent);
  padding: .3rem .85rem;
  border-radius: 999px;
  font-size: .9rem;
}

.module-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  gap: 1.75rem;
}

@media (min-width: 960px) {
  .module-grid {
    grid-template-columns: minmax(260px, 1fr) minmax(0, 2.6fr);
    align-items: flex-start;
  }
}

.module-sidebar {
  position: relative;
}

@media (min-width: 960px) {
  .module-sidebar {
    position: sticky;
    top: 1.25rem;
  }
}

.module-card {
  background: var(--module-card-bg);
  border-radius: 24px;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.module-card--sidebar {
  box-shadow: 0 12px 30px rgba(74, 108, 255, 0.12);
}

.sidebar-heading h2 {
  margin: .5rem 0;
  font-size: 1.3rem;
  color: var(--module-text);
}

.sidebar-pill {
  display: inline-flex;
  align-items: center;
  padding: .3rem .9rem;
  border-radius: 999px;
  background: rgba(74, 108, 255, 0.12);
  color: var(--module-accent);
  font-size: .85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.sidebar-text {
  color: var(--module-subtext);
  margin: 0;
}

.sidebar-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: .75rem 1rem;
  margin: 1.5rem 0;
}

.sidebar-stats dt {
  text-transform: uppercase;
  font-size: .75rem;
  letter-spacing: .08em;
  color: #94a3b8;
}

.sidebar-stats dd {
  margin: .15rem 0 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--module-text);
}

.module-progress {
  margin-bottom: 1.25rem;
}

.module-progress--inline {
  margin-bottom: 0;
}

.module-progress__track {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: #e2e8f0;
  overflow: hidden;
}

.module-progress__fill {
  display: block;
  height: 100%;
  width: var(--progress-value, 0%);
  background: linear-gradient(90deg, var(--module-accent), #7f93ff);
  border-radius: inherit;
  transition: width .25s ease;
}

#quizProgressFill {
  --progress-value: 0%;
}

.module-progress__meta {
  margin: .45rem 0 0;
  font-size: .9rem;
  color: var(--module-subtext);
}

.module-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border-radius: 999px;
  padding: .75rem 1.4rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.module-btn:disabled {
  opacity: .5;
  cursor: not-allowed;
  box-shadow: none;
}

.module-btn--primary {
  background: var(--module-accent);
  color: #fff;
  box-shadow: 0 18px 35px rgba(74, 108, 255, 0.35);
}

.module-btn--primary:hover:not(:disabled) {
  background: var(--module-accent-dark);
  transform: translateY(-1px);
}

.module-btn--ghost {
  background: rgba(74, 108, 255, 0.08);
  color: var(--module-accent);
  box-shadow: none;
}

.module-btn--ghost:hover:not(:disabled) {
  background: rgba(74, 108, 255, 0.14);
}

.module-main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.module-video-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  overflow: hidden;
  background: #0f172a;
  background-size: cover;
  background-position: center;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
}

.module-video-wrap iframe,
.module-video-wrap video {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.module-video-placeholder {
  width: 100%;
  height: 100%;
  color: rgba(255,255,255,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
}

.module-meta-row {
  margin-top: 1.25rem;
}

.module-meta-heading {
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .8rem;
  color: #94a3b8;
  margin: 0 0 .25rem;
}

.module-meta-body {
  margin: 0;
  color: var(--module-subtext);
  line-height: 1.65;
}

.module-card--takeaways ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--module-text);
  line-height: 1.6;
}

.module-card--resources {
  background: linear-gradient(140deg, rgba(74,108,255,0.08), rgba(255,255,255,0.95));
}

.resources-header h3 {
  margin: .4rem 0 1rem;
}

.resources-pill {
  display: inline-flex;
  padding: .25rem .75rem;
  border-radius: 999px;
  background: rgba(74, 108, 255, 0.1);
  color: var(--module-accent);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.resources-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.resources-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid rgba(74,108,255,0.15);
  border-radius: 16px;
  padding: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.resources-list p {
  margin: .2rem 0 0;
  color: var(--module-subtext);
}

.resource-link {
  color: #fff;
  background: var(--module-accent);
  padding: .5rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(74,108,255,0.2);
}

.resource-link:hover {
  background: var(--module-accent-dark);
}

.takeaways-pill {
  display: inline-flex;
  background: rgba(29, 185, 84, 0.12);
  color: var(--module-green);
  padding: .25rem .75rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.quiz-header h2 {
  margin: .35rem 0;
  font-size: 1.6rem;
}

.quiz-pill {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .78rem;
  color: var(--module-accent);
  font-weight: 700;
}

.quiz-flow {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
}

.quiz-flow--locked .quiz-lock-screen {
  display: flex;
}

.quiz-lock-screen {
  display: none;
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: rgba(245, 247, 251, 0.96);
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
  padding: 1rem;
  z-index: 2;
}

.quiz-flow__status {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.quiz-progress-label {
  font-weight: 600;
  color: var(--module-text);
}

.quiz-question-card {
  background: #f8faff;
  border-radius: 20px;
  padding: 1.5rem;
  border: 1px solid rgba(74, 108, 255, 0.1);
  min-height: 220px;
}

.quiz-hint-line {
  text-align: center;
  color: var(--module-subtext);
  margin: 0;
  font-weight: 600;
}

.quiz-question-card h3 {
  margin: 0 0 .75rem;
  font-size: 1.15rem;
  color: var(--module-text);
}

.quiz-question-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.quiz-choice {
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 14px;
  padding: .65rem .9rem;
  display: flex;
  align-items: center;
  gap: .65rem;
  font-size: 1rem;
  cursor: pointer;
  transition: border .2s ease, background .2s ease, box-shadow .2s ease;
}

.quiz-choice input {
  accent-color: var(--module-accent);
  width: 18px;
  height: 18px;
}

.quiz-choice.is-selected {
  border-color: var(--module-accent);
  background: rgba(74, 108, 255, 0.08);
  box-shadow: 0 6px 20px rgba(74, 108, 255, 0.18);
}

.quiz-choice.is-correct {
  border-color: var(--module-green);
  background: rgba(29, 185, 84, 0.08);
}

.quiz-choice.is-incorrect {
  border-color: #f87171;
  background: rgba(248, 113, 113, 0.1);
}

.quiz-open-wrap { margin-top: 1rem; }
.quiz-open-input {
  width: 100%;
  min-height: 150px;
  border-radius: 14px;
  border: 1px solid rgba(74,108,255,0.2);
  padding: .85rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  background: #fff;
  resize: vertical;
  transition: border .2s ease, box-shadow .2s ease;
}
.quiz-open-input:focus {
  outline: none;
  border-color: #4a6cff;
  box-shadow: 0 0 0 3px rgba(74,108,255,0.18);
}

.quiz-nav {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.quiz-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
}

.quiz-result-card {
  background: #f0f9ff;
  border-radius: 18px;
  border: 1px solid rgba(14, 165, 233, 0.3);
  padding: 1rem;
  color: #0f172a;
  display: none;
}

.quiz-result-card.is-visible {
  display: block;
}

.quiz-result-card strong {
  font-size: 1.2rem;
  display: block;
}

.quiz-confetti {
  position: relative;
  min-height: 0;
}

.confetti-piece {
  position: absolute;
  width: 8px;
  height: 14px;
  border-radius: 2px;
  animation: confetti-fall 1.2s ease forwards;
  opacity: 0;
}

.quiz-feedback-line {
  margin-top: 1rem;
  font-weight: 600;
}

.quiz-feedback-line.is-correct {
  color: var(--module-green);
}

.quiz-feedback-line.is-incorrect {
  color: #f97316;
}

.module-btn.is-complete {
  background: rgba(29, 185, 84, 0.15);
  color: var(--module-green);
  box-shadow: none;
}

@keyframes confetti-fall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(40px) rotate(240deg);
    opacity: 0;
  }
}

@media (max-width: 959px) {
  .module-sidebar {
    order: 2;
  }
  .module-main {
    order: 1;
  }
  .module-card {
    border-radius: 18px;
  }
  .quiz-nav,
  .quiz-cta {
    flex-direction: column;
    align-items: stretch;
  }
  .module-btn {
    width: 100%;
  }
}