/* ============================
   THEME TOKENS
============================ */
:root {
  --bg: #f8f6f8;
  --bg-2: #eaf7f7;
  --text: #241b38;
  --muted: #6d6684;
  --card: #ffffff;
  --accent: #ff746d;
  --accent-2: #d10067;
  --accent-3: #1ec6c2;
  --accent-4: #4b35e8;
  --danger: #e14368;
  --warning: #ffb35c;
  --shadow: 0 12px 30px rgba(42, 21, 73, 0.12);
  --shadow-soft: 0 6px 18px rgba(42, 21, 73, 0.08);
  --radius: 18px;
  --radius-pill: 999px;
}

/* ============================
   RESET & BOX MODEL
============================ */
* {
  box-sizing: border-box;
  font-family: "SF Pro Display", "SF Pro Text", "Segoe UI", "Helvetica Neue", sans-serif;
  margin: 0;
  padding: 0;
}

/* ============================
   LAYOUT FLEX POUR FOOTER COLLÉ
============================ */
html, body {
  height: 100%;
  display: flex;
  flex-direction: column;
}

body {
  color: var(--text);
  background:
    radial-gradient(1200px 560px at 12% -10%, rgba(255, 116, 109, 0.26) 0%, transparent 58%),
    radial-gradient(1000px 560px at 88% 2%, rgba(75, 53, 232, 0.20) 0%, transparent 58%),
    radial-gradient(960px 520px at 18% 95%, rgba(30, 198, 194, 0.20) 0%, transparent 54%),
    linear-gradient(180deg, #fffafb 0%, #f3f2fb 100%);
}

p {
  text-align: justify;
}

/* ============================
   HEADER
============================ */
header {
  color: var(--text);
  padding: 1.6rem 1.5rem 1.2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 52%, var(--accent-4) 100%);
  border-bottom: 1px solid rgba(75, 53, 232, 0.18);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
  position: relative;
}

header h1 {
  text-align: center;
}

.header-nav {
  position: absolute;
  left: 1rem;
  top: 1rem;
}

.header-help-link {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
  text-decoration: none;
  z-index: 3;
}

.header-help-icon {
  display: block;
  width: 50px;
  height: 50px;
}

.nav-back {
  background: rgba(255, 255, 255, 0.9);
  color: var(--accent-4);
  border: none;
  border-radius: var(--radius-pill);
  padding: 0.5rem 0.9rem;
  font-size: 0.95rem;
  box-shadow: var(--shadow-soft);
  cursor: pointer;
}

.nav-back:active {
  animation: bounce 220ms ease-out;
}

.home-link {
  color: #ffffff;
  text-decoration: none;
}

.brand-lockup {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  width: 100%;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  padding: 6px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 24px rgba(42, 21, 73, 0.16);
  position: absolute;
  left: 0;
}

.brand-logo {
  display: block;
  width: 100%;
  height: 100%;
  flex: 0 0 auto;
  filter: none;
}

.home-link:hover {
  text-decoration: none;
}

.breadcrumb {
  margin-top: 0.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
}

.breadcrumb .crumb {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
  font-weight: 500;
}

.breadcrumb .crumb.current {
  font-weight: 700;
}

.breadcrumb .crumb-sep {
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0.2rem;
}

h1 {
  color: #ffffff;
  font-size: clamp(2.2rem, 6vw, 3rem);
  margin-bottom: 0.4rem;
  letter-spacing: -0.02em;
}

h2 {
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.2rem, 4vw, 1.6rem);
  margin-bottom: 0.8rem;
  font-weight: 500;
}

main h2,
.card h2,
#question {
  color: var(--text);
}

/* ============================
   MAIN
============================ */
main {
  flex: 1;
  max-width: 900px;
  width: 92%;
  margin: auto;
  padding: 1.5rem 1rem 2rem;
  font-size: 1.15rem;
  line-height: 1.6;
}

/* ============================
   CARDS / BLOCS
============================ */
.card {
  background: var(--card);
  padding: 1.6rem;
  margin-bottom: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(75, 53, 232, 0.08);
  backdrop-filter: blur(8px);
}

.quiz-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 1rem;
  margin-bottom: 0.9rem;
}

#counter,
#quizContext {
  margin: 0;
}

#counter {
  font-weight: 700;
  color: var(--accent-4);
}

#quizContext {
  color: var(--muted);
  font-size: 0.98rem;
}

/* ============================
   BOUTONS GÉNÉRAUX
============================ */
button, a.button {
  display: inline-block;
  padding: 0.95rem 1.6rem;
  margin: 0.5rem 0;
  font-size: 1.15rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 58%, var(--accent-4) 100%);
  color: white;
  border: none;
  border-radius: var(--radius-pill);
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  position: relative;
  overflow: hidden;
}

button:hover, a.button:hover {
  transform: translateY(-1px);
  filter: brightness(1.02);
}

button:disabled,
a.button[aria-disabled="true"] {
  background: linear-gradient(135deg, #c6cfdf 0%, #a8b5cb 100%);
  color: rgba(255, 255, 255, 0.9);
  box-shadow: none;
  cursor: not-allowed;
  filter: none;
  opacity: 1;
}

button:disabled:hover,
a.button[aria-disabled="true"]:hover {
  transform: none;
  filter: none;
}

button:active, a.button:active {
  animation: bounce 220ms ease-out;
}

@keyframes bounce {
  0% { transform: scale(1); }
  40% { transform: scale(0.94); }
  70% { transform: scale(1.02); }
  100% { transform: scale(1); }
}

/* ============================
   BOUTONS QCM
============================ */
.answer-btn {
  -webkit-tap-highlight-color: transparent;
  display: block;
  width: 100%;
  padding: 0.9rem 1.2rem;
  margin-bottom: 0.9rem;
  background: linear-gradient(180deg, #ffffff 0%, #fcfbff 100%);
  color: var(--text);
  border: 1px solid rgba(75, 53, 232, 0.12);
  border-radius: 16px;
  text-align: left;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  font-size: 1.15rem;
  box-shadow: var(--shadow-soft);
}

@media (hover: hover) and (pointer: fine) {
  .answer-btn:hover {
    transform: translateY(-1px);
    background: var(--bg-2) !important;
  }
}

.answer-btn.selected {
  background: linear-gradient(135deg, var(--accent-3) 0%, var(--accent-4) 100%) !important;
  color: #ffffff !important;
  border-color: transparent !important;
  box-shadow: 0 14px 30px rgba(42, 21, 73, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.answer-btn.correct {
  background: linear-gradient(135deg, #16c26e 0%, var(--accent-3) 100%);
  color: white;
  border-color: transparent;
}

.answer-btn.incorrect {
  background: linear-gradient(135deg, #ff5a7a 0%, var(--danger) 100%);
  color: white;
  border-color: transparent;
}

.answer-btn.disabled {
  pointer-events: none;
  opacity: 0.7;
}

/* ============================
   RESULTATS
============================ */
.result-card {
  padding: 1.1rem 1.2rem;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease;
  font-size: 1.1rem;
  border: 1px solid rgba(75, 53, 232, 0.08);
  background: var(--card);
}

.results-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1rem;
  margin-bottom: 1rem;
}

.results-summary h2,
.results-summary p {
  margin: 0;
}

.results-summary p {
  color: var(--muted);
}

.result-card.correct {
  border-left: 6px solid #16c26e;
}

.result-card.wrong {
  border-left: 6px solid var(--danger);
}

.result-card:hover {
  transform: translateY(-2px);
}

.result-card h3 {
  margin-bottom: 0.4rem;
}

.result-card p {
  margin: 0.2rem 0;
  color: var(--text);
}

.result-card .explanation {
  background-color: #f7f5ff;
  padding: 0.6rem 0.8rem;
  border-radius: 12px;
  margin-top: 0.6rem;
  font-style: italic;
  color: var(--muted);
}

/* ============================
   ESPACEMENT BOUTONS THÈMES
============================ */
.theme-buttons a.button {
  display: block;
  margin-bottom: 1.2rem;
  text-align: center;
}

.theme-buttons-featured {
  margin-bottom: 1.1rem;
}

.home-accordion {
  max-width: 860px;
  margin: 0 auto;
}

.home-accordion-section {
  background: var(--card);
  border: 1px solid rgba(75, 53, 232, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  margin-bottom: 1rem;
  overflow: hidden;
}

.home-accordion-section summary {
  cursor: pointer;
  list-style: none;
  padding: 1rem 3rem 1rem 1rem;
  font-weight: 700;
  color: var(--text);
  background: linear-gradient(180deg, #fff4f6 0%, #ffffff 100%);
  position: relative;
}

.home-accordion-section summary::-webkit-details-marker {
  display: none;
}

.home-accordion-section summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--accent);
}

.home-accordion-section[open] summary::after {
  content: "−";
}

.home-accordion-list {
  padding: 0.5rem 1rem 1rem;
}

.button-featured {
  font-size: 1.25rem;
  font-weight: 700;
  box-shadow: 0 18px 34px rgba(209, 0, 103, 0.22);
}

.choice-featured-note,
.choice-section-label {
  margin-bottom: 1rem;
}

.choice-featured-note {
  color: var(--muted);
  font-size: 1rem;
}

.themes-accordion {
  text-align: left;
  max-width: 860px;
  margin: 0 auto 1.4rem;
}

.theme-accordion-section {
  background: var(--card);
  border: 1px solid rgba(75, 53, 232, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  margin-bottom: 0.8rem;
  overflow: hidden;
}

.theme-accordion-section summary {
  cursor: pointer;
  list-style: none;
  padding: 0.95rem 3rem 0.95rem 1rem;
  font-weight: 700;
  color: var(--text);
  background: linear-gradient(180deg, #fff4f6 0%, #ffffff 100%);
  position: relative;
}

.theme-accordion-section summary::-webkit-details-marker {
  display: none;
}

.theme-accordion-section summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--accent);
}

.theme-accordion-section[open] summary::after {
  content: "−";
}

.theme-accordion-list {
  padding: 0.35rem 0.8rem 0.9rem 1.25rem;
  background: linear-gradient(180deg, #ffffff 0%, #fbfaff 100%);
}

.theme-accordion-link {
  display: block;
  text-decoration: none;
  color: var(--text);
  border: 1px solid rgba(75, 53, 232, 0.1);
  border-radius: 12px;
  background: #ffffff;
  padding: 0.75rem 0.9rem;
  margin-top: 0.45rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}

.theme-accordion-link:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
  filter: brightness(0.99);
  background-color: var(--bg-2);
}

.theme-accordion-link span {
  display: block;
  font-weight: 400;
  font-style: italic;
  color: #33415f;
}

/* ============================
   COURS
============================ */
#coursePage {
  max-width: 1180px;
}

.course-layout {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.course-hero {
  text-align: center;
  padding: 2rem 2.2rem;
  background:
    radial-gradient(circle at top left, rgba(255, 116, 109, 0.26), transparent 34%),
    radial-gradient(circle at bottom right, rgba(30, 198, 194, 0.22), transparent 38%),
    linear-gradient(145deg, #ffffff 0%, #f5f4ff 100%);
  border: 1px solid rgba(209, 0, 103, 0.12);
}

.course-hero p {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.08rem;
  color: #22304f;
}

.course-sidebar h2,
.course-content h2,
.course-empty h2 {
  margin-bottom: 0.8rem;
}

.course-sidebar {
  position: sticky;
  top: 1rem;
  padding: 1rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(247, 244, 255, 0.96) 100%);
}

.course-sidebar h2 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.course-content {
  padding: 1.3rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(250, 247, 255, 0.98) 100%);
}

.course-list {
  display: grid;
  gap: 0.7rem;
  max-height: 72vh;
  overflow-y: auto;
  padding-right: 0.2rem;
}

.course-group {
  display: grid;
  gap: 0.7rem;
}

.course-accordion-section {
  background: var(--card);
  border: 1px solid rgba(75, 53, 232, 0.08);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.course-accordion-section + .course-accordion-section {
  margin-top: 0.8rem;
}

.course-accordion-section summary {
  cursor: pointer;
  list-style: none;
  padding: 0.95rem 3rem 0.95rem 1rem;
  background: linear-gradient(180deg, #fff4f6 0%, #ffffff 100%);
  position: relative;
}

.course-accordion-section summary::-webkit-details-marker {
  display: none;
}

.course-accordion-section summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--accent);
}

.course-accordion-section[open] summary::after {
  content: "−";
}

.course-accordion-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-4);
}

.course-accordion-list {
  display: grid;
  gap: 0.7rem;
  padding: 0.35rem 0.8rem 0.9rem;
  background: linear-gradient(180deg, #ffffff 0%, #fbfaff 100%);
}

.course-group + .course-group {
  margin-top: 0.9rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(75, 53, 232, 0.12);
}

.course-group-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-4);
}

.course-group-list {
  display: grid;
  gap: 0.7rem;
}

.course-link {
  width: 100%;
  text-align: left;
  margin: 0;
  padding: 0.95rem 1rem;
  background: linear-gradient(180deg, #ffffff 0%, #fbf8ff 100%);
  color: #16233f;
  border: 1px solid rgba(75, 53, 232, 0.08);
  border-radius: 16px;
  box-shadow: none;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
}

.course-link:hover {
  transform: translateX(4px);
  box-shadow: 0 10px 20px rgba(42, 21, 73, 0.08);
  border-color: rgba(209, 0, 103, 0.22);
  filter: none;
}

.course-link.active {
  background:
    linear-gradient(135deg, rgba(255, 116, 109, 0.98) 0%, rgba(209, 0, 103, 0.98) 55%, rgba(75, 53, 232, 0.98) 100%);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 16px 28px rgba(209, 0, 103, 0.24);
}

.course-viewer-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(24, 42, 90, 0.08);
}

.course-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.course-actions .button {
  min-width: 170px;
  text-align: center;
}

.course-secondary-button {
  background: linear-gradient(135deg, #1ec6c2 0%, #4b35e8 100%);
}

.course-video-frame {
  padding: 0.8rem;
  background:
    linear-gradient(135deg, #2a1749 0%, #4b35e8 55%, #1ec6c2 100%);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 24px 44px rgba(9, 20, 40, 0.22);
}

.course-video-frame video {
  display: block;
  width: 100%;
  max-height: 68vh;
  background: #000000;
  border-radius: 18px;
}

.course-help {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: linear-gradient(180deg, #fff7f8 0%, #f2fbfb 100%);
  border: 1px solid rgba(209, 0, 103, 0.12);
  color: #41506f;
}

.course-empty {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 2rem;
  border-radius: 22px;
  background:
    radial-gradient(circle at top left, rgba(255, 116, 109, 0.24), transparent 32%),
    linear-gradient(145deg, #fffdfd 0%, #f1f7ff 100%);
  border: 1px dashed rgba(75, 53, 232, 0.28);
}

.course-empty p {
  max-width: 480px;
  color: #42506b;
}

/* ============================
   FOOTER
============================ */
footer {
  color: #ffffff;
  padding: 1.2rem 1.5rem 1.6rem;
  text-align: center;
  background: linear-gradient(135deg, var(--accent-3) 0%, var(--accent-4) 45%, var(--accent-2) 100%);
  border-top: 1px solid rgba(75, 53, 232, 0.2);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
  font-size: 1.05rem;
}

footer a.button {
  margin: 0.5rem;
}

footer p {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

footer a.button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #ffffff;
  color: var(--accent);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

footer a.button:hover {
  filter: brightness(0.98);
}

.footer-sep {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
}

/* ============================
   CLASSES UTILES
============================ */
.center {
  text-align: center;
}

.small {
  font-size: 1rem;
  color: var(--muted);
}

.stats-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1rem;
}

.button-danger {
  background: linear-gradient(135deg, #ff6b6b 0%, var(--danger) 100%);
}

ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

/* ============================
   RESPONSIVE MOBILE
============================ */
@media (max-width: 600px) {
  :root {
    --radius: 16px;
  }

  main {
    width: 96%;
    padding: 1.2rem 0.8rem 2.2rem;
    font-size: 1.3rem;
  }

  header {
    padding: 2.8rem 1rem 1.1rem;
  }

  .header-nav {
    left: 0.8rem;
    top: 0.6rem;
  }

  .header-help-link {
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    top: calc(50% + 0.6rem);

  }

  header .header-help-link {
  }

  .nav-back {
    font-size: 0.9rem;
    padding: 0.45rem 0.75rem;
  }

  h1 {
    font-size: 2rem;
    line-height: 1.1;
  }

  .brand-lockup {
    gap: 0.65rem;
    padding: 0 3.2rem;
  }

  .brand-mark {
    width: 52px;
    height: 52px;
    padding: 5px;
    border-radius: 16px;
    left: 0.2rem;
  }

  .brand-logo {
    width: 100%;
    height: 100%;
  }

  h2 {
    font-size: 1.5rem;
    line-height: 1.2;
  }

  .breadcrumb {
    font-size: 0.9rem;
  }

  .card {
    padding: 1.3rem;
  }

  .quiz-meta {
    gap: 0.35rem 0.8rem;
    margin-bottom: 0.8rem;
  }

  #quizContext {
    font-size: 0.92rem;
  }

  .answer-btn, .result-card, main#qcmContainer, main#results {
    font-size: 1.3rem;
  }

  main#results {
    width: 96%;
  }

  .result-card {
    padding: 1.2rem;
  }

  .results-summary {
    gap: 0.25rem 0.8rem;
  }

  .result-card h3 {
    font-size: 1.2rem;
    line-height: 1.3;
  }

  .result-card p {
    font-size: 1.1rem;
    line-height: 1.5;
  }

  .result-card .explanation {
    font-size: 1.05rem;
  }

  .answer-btn {
    padding: 1.1rem 1.1rem;
  }

  button, a.button {
    padding: 1.05rem 1.2rem;
    font-size: 1.2rem;
    width: 100%;
    text-align: center;
  }

  .theme-buttons a.button {
    margin-bottom: 1rem;
  }

  .stats-actions {
    justify-content: stretch;
  }

  .home-accordion-section summary {
    font-size: 1.05rem;
    line-height: 1.35;
  }

  .theme-accordion-section summary {
    font-size: 1.05rem;
    line-height: 1.35;
  }

  .theme-accordion-link {
    padding: 0.85rem 0.9rem;
  }

  .course-layout {
    grid-template-columns: 1fr;
  }

  .course-sidebar {
    position: static;
  }

  .course-list {
    max-height: none;
    overflow: visible;
  }

  .course-viewer-header {
    flex-direction: column;
  }

  .course-actions {
    width: 100%;
    justify-content: stretch;
  }

  .course-actions .button {
    min-width: 0;
  }

  .course-empty {
    min-height: 220px;
    padding: 1.4rem;
  }

  footer p {
    flex-direction: row;
    gap: 0.5rem;
    font-size: 1.05rem;
  }

  .footer-contact-sep,
  .footer-contact-link {
    display: none;
  }

  footer a.button {
    width: auto;
    justify-content: center;
    padding: 0.7rem 0.9rem;
    font-size: 0.95rem;
  }
}