.pr-app {
  color: #172033;
  min-height: 100vh;
}

.pr-site-header {
  background: rgba(248, 251, 253, 0.95);
  border-bottom: 1px solid rgba(30, 41, 59, 0.13);
  border-top: 3px solid #143a5a;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.07);
  position: sticky;
  top: 0;
  z-index: 20;
}

.pr-header-inner {
  align-items: center;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(230px, 1fr) auto auto;
  margin: 0 auto;
  max-width: 1600px;
  padding: 1.05rem clamp(1rem, 4vw, 2rem);
}

.pr-brand {
  align-items: center;
  color: inherit;
  display: inline-flex;
  gap: 1rem;
  min-width: 0;
  text-decoration: none;
}

.pr-brand img {
  height: 44px;
  width: 44px;
}

.pr-brand-copy {
  display: grid;
  line-height: 1.12;
  min-width: 0;
}

.pr-brand-name {
  color: #172033;
  font-size: clamp(1.9rem, 4vw, 2.45rem);
  font-weight: 760;
}

.pr-brand-tagline {
  color: #5b6575;
  font-size: 1rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pr-nav,
.pr-lang {
  align-items: center;
  display: flex;
  gap: 0.65rem;
}

.pr-nav a,
.pr-lang span {
  align-items: center;
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid rgba(30, 41, 59, 0.12);
  border-radius: 8px;
  color: #172033;
  display: inline-flex;
  font-size: 1.02rem;
  justify-content: center;
  min-height: 2.55rem;
  padding: 0.5rem 0.75rem;
  text-decoration: none;
  white-space: nowrap;
}

.pr-nav a:hover,
.pr-nav a.is-active,
.pr-lang span {
  background: #fff;
  border-color: rgba(49, 94, 184, 0.28);
  color: #315eb8;
}

.pr-page {
  margin: 0 auto;
  max-width: 1460px;
  padding: clamp(1rem, 3vw, 2rem);
}

.pr-hero {
  align-items: end;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) auto;
  margin-bottom: clamp(1.1rem, 3vw, 2rem);
}

.pr-eyebrow {
  color: #315eb8;
  font-size: 0.9rem;
  font-weight: 820;
  margin: 0 0 0.45rem;
  text-transform: uppercase;
}

.pr-hero h1 {
  color: #172033;
  font-size: clamp(2.35rem, 6vw, 4.55rem);
  font-weight: 820;
  line-height: 0.98;
  margin: 0;
}

.pr-hero p {
  color: #5b6575;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.58;
  margin: 0.75rem 0 0;
  max-width: 790px;
}

.pr-steps {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: flex-end;
}

.pr-steps span {
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(30, 41, 59, 0.12);
  border-radius: 8px;
  color: #143a5a;
  font-weight: 800;
  padding: 0.52rem 0.7rem;
}

.pr-shell {
  align-items: start;
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.8rem);
  grid-template-columns: minmax(0, 1fr) minmax(310px, 400px);
}

.pr-panel,
.pr-side-panel {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(30, 41, 59, 0.13);
  border-radius: 8px;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.07), inset 0 1px 0 rgba(255, 255, 255, 0.78);
}

.pr-panel {
  padding: clamp(0.9rem, 2.5vw, 1.35rem);
}

.pr-toolbar {
  align-items: stretch;
  display: grid;
  gap: 0.8rem;
  grid-template-columns: minmax(0, 1fr) auto;
  margin-bottom: 1rem;
}

.pr-levels {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pr-level {
  align-content: center;
  background: #fff;
  border: 2px solid rgba(30, 41, 59, 0.13);
  border-radius: 8px;
  color: #172033;
  cursor: pointer;
  display: grid;
  gap: 0.2rem;
  min-height: 4.6rem;
  padding: 0.72rem 0.75rem;
  position: relative;
  text-align: left;
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.pr-level:hover {
  border-color: rgba(49, 94, 184, 0.32);
  transform: translateY(-1px);
}

.pr-level strong {
  color: #172033;
  font-size: clamp(1.04rem, 2vw, 1.25rem);
  font-weight: 900;
}

.pr-level span {
  color: #64748b;
  font-weight: 780;
}

.pr-level.is-active {
  background: linear-gradient(135deg, #315eb8, #18a999);
  border-color: rgba(255, 255, 255, 0.78);
  box-shadow: 0 0 0 4px rgba(20, 58, 90, 0.12), 0 16px 32px rgba(49, 94, 184, 0.22);
  color: #fff;
}

.pr-level.is-active::after {
  background: rgba(255, 255, 255, 0.96);
  border-radius: 999px;
  color: #143a5a;
  content: "Actif";
  font-size: 0.76rem;
  font-weight: 900;
  padding: 0.18rem 0.45rem;
  position: absolute;
  right: 0.55rem;
  top: 0.5rem;
}

.pr-level.is-active strong,
.pr-level.is-active span {
  color: #fff;
}

.pr-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: flex-end;
}

.pr-btn {
  align-items: center;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(30, 41, 59, 0.14);
  border-radius: 8px;
  color: #172033;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 820;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.58rem 0.85rem;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.pr-btn:hover {
  background: #fff;
  border-color: rgba(49, 94, 184, 0.3);
  transform: translateY(-1px);
}

.pr-btn-primary {
  background: linear-gradient(135deg, #315eb8, #18a999);
  border-color: rgba(255, 255, 255, 0.7);
  box-shadow: 0 14px 30px rgba(49, 94, 184, 0.2);
  color: #fff;
}

.pr-btn-wide {
  margin-top: 0.8rem;
  width: 100%;
}

.pr-message {
  align-items: center;
  background: #f8fbfd;
  border: 1px solid rgba(20, 58, 90, 0.16);
  border-radius: 8px;
  display: grid;
  gap: 0.18rem;
  margin-bottom: 0.9rem;
  min-height: 4.4rem;
  padding: 0.85rem 1rem;
}

.pr-message strong {
  color: #143a5a;
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  font-weight: 860;
}

.pr-message span {
  color: #475569;
  font-size: 1rem;
  line-height: 1.45;
}

.pr-message.is-start {
  background: #fff7ed;
  border-color: rgba(217, 119, 6, 0.2);
}

.pr-message.is-turn {
  background: #eff6ff;
  border-color: rgba(49, 94, 184, 0.2);
}

.pr-message.is-success {
  background: #ecfdf5;
  border-color: rgba(20, 184, 166, 0.26);
}

.pr-score-row {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 1rem;
}

.pr-score {
  background: rgba(248, 251, 253, 0.82);
  border: 1px solid rgba(30, 41, 59, 0.1);
  border-radius: 8px;
  min-width: 0;
  padding: 0.65rem 0.72rem;
}

.pr-score span {
  color: #64748b;
  display: block;
  font-size: 0.78rem;
  font-weight: 800;
  margin-bottom: 0.16rem;
  text-transform: uppercase;
}

.pr-score strong {
  color: #172033;
  display: block;
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  overflow-wrap: anywhere;
}

.pr-board {
  display: grid;
  gap: clamp(0.48rem, 1.2vw, 0.78rem);
  margin: 0 auto 1rem;
}

.pr-board.is-easy {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 760px;
}

.pr-board.is-medium {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 820px;
}

.pr-board.is-hard {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  max-width: 980px;
}

.pr-card {
  aspect-ratio: 1;
  background: transparent;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  min-width: 0;
  padding: 0;
  perspective: 900px;
}

.pr-card:disabled {
  cursor: default;
}

.pr-card-inner {
  border-radius: 8px;
  display: grid;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 240ms ease;
  width: 100%;
}

.pr-card.is-open .pr-card-inner,
.pr-card.is-matched .pr-card-inner {
  transform: rotateY(180deg);
}

.pr-card-back,
.pr-card-front {
  backface-visibility: hidden;
  border-radius: 8px;
  inset: 0;
  overflow: hidden;
  position: absolute;
}

.pr-card-back {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(49, 94, 184, 0.95), rgba(24, 169, 153, 0.94)),
    #315eb8;
  border: 1px solid rgba(255, 255, 255, 0.52);
  box-shadow: 0 12px 24px rgba(49, 94, 184, 0.18), inset 0 0 0 1px rgba(255, 255, 255, 0.32);
  color: #fff;
  display: flex;
  justify-content: center;
  padding: 0.6rem;
}

.pr-card-back::before {
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  content: "";
  inset: 0.48rem;
  position: absolute;
}

.pr-card-back span {
  font-size: clamp(0.8rem, 1.8vw, 1.05rem);
  font-weight: 900;
  line-height: 1;
  position: relative;
}

.pr-card-front {
  background: #fff;
  border: 1px solid rgba(30, 41, 59, 0.12);
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.12);
  display: grid;
  grid-template-rows: 1fr auto;
  transform: rotateY(180deg);
}

.pr-card-front img {
  display: block;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.pr-card-front span {
  background: rgba(248, 251, 253, 0.94);
  color: #334155;
  font-size: clamp(0.72rem, 1.4vw, 0.86rem);
  font-weight: 800;
  line-height: 1.1;
  overflow: hidden;
  padding: 0.42rem 0.45rem;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pr-card.is-matched .pr-card-front {
  border-color: rgba(20, 184, 166, 0.42);
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.18), 0 14px 28px rgba(20, 184, 166, 0.12);
}

.pr-feedback {
  background: #f8fbfd;
  border: 1px solid rgba(30, 41, 59, 0.1);
  border-radius: 8px;
  color: #475569;
  font-weight: 760;
  line-height: 1.45;
  min-height: 3.1rem;
  padding: 0.8rem 0.95rem;
}

.pr-feedback.is-good {
  background: #ecfdf5;
  border-color: rgba(20, 184, 166, 0.24);
  color: #065f46;
}

.pr-feedback.is-final {
  border-color: rgba(20, 184, 166, 0.45);
  box-shadow: 0 12px 26px rgba(20, 184, 166, 0.12);
  font-size: clamp(1.08rem, 2vw, 1.22rem);
}

.pr-feedback.is-warn {
  background: #fff7ed;
  border-color: rgba(217, 119, 6, 0.22);
  color: #9a3412;
}

.pr-side {
  display: grid;
  gap: 0.85rem;
}

.pr-side-panel {
  padding: 1rem;
}

.pr-side-panel h2 {
  align-items: center;
  color: #172033;
  display: flex;
  font-size: 1.1rem;
  font-weight: 860;
  gap: 0.7rem;
  justify-content: space-between;
  margin: 0 0 0.7rem;
}

.pr-side-panel h2 span {
  background: rgba(20, 58, 90, 0.1);
  border: 1px solid rgba(20, 58, 90, 0.15);
  border-radius: 999px;
  color: #143a5a;
  flex: 0 0 auto;
  font-size: 0.72rem;
  font-weight: 850;
  padding: 0.35rem 0.5rem;
}

.pr-side-panel li {
  color: #475569;
  font-size: 0.98rem;
  line-height: 1.52;
}

.pr-side-panel ol {
  margin: 0;
  padding-left: 1.25rem;
}

.pr-side-panel li + li {
  margin-top: 0.45rem;
}

.pr-theme-grid {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pr-theme {
  align-items: center;
  background: #fff;
  border: 1px solid rgba(30, 41, 59, 0.12);
  border-radius: 8px;
  color: #172033;
  cursor: pointer;
  display: grid;
  gap: 0.55rem;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  min-height: 4.15rem;
  padding: 0.45rem;
  text-align: left;
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.pr-theme:hover {
  border-color: rgba(49, 94, 184, 0.28);
  transform: translateY(-1px);
}

.pr-theme.is-active {
  border-color: rgba(20, 184, 166, 0.45);
  box-shadow: inset 0 0 0 2px rgba(20, 184, 166, 0.18);
}

.pr-theme img {
  aspect-ratio: 1;
  border-radius: 7px;
  display: block;
  height: 3.2rem;
  object-fit: cover;
  width: 3.2rem;
}

.pr-theme span {
  display: grid;
  gap: 0.08rem;
  min-width: 0;
}

.pr-theme strong {
  color: #172033;
  font-size: 0.94rem;
  font-weight: 850;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pr-theme em {
  color: #64748b;
  font-size: 0.78rem;
  font-style: normal;
  font-weight: 760;
}

.pr-history {
  display: grid;
  gap: 0.55rem;
  max-height: 540px;
  overflow: auto;
  padding-right: 0.15rem;
}

.pr-history-item {
  align-items: center;
  background: rgba(248, 251, 253, 0.82);
  border: 1px solid rgba(30, 41, 59, 0.1);
  border-radius: 8px;
  display: flex;
  gap: 0.7rem;
  justify-content: space-between;
  padding: 0.72rem;
}

.pr-history-item div {
  display: grid;
  gap: 0.16rem;
  min-width: 0;
}

.pr-history-item strong {
  color: #172033;
  font-weight: 880;
  overflow-wrap: anywhere;
}

.pr-history-item span {
  color: #64748b;
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}

.pr-history-item b {
  color: #315eb8;
  flex: 0 0 auto;
  font-size: 0.95rem;
}

.pr-empty {
  background: rgba(248, 251, 253, 0.72);
  border: 1px solid rgba(30, 41, 59, 0.1);
  border-radius: 8px;
  color: #64748b;
  margin: 0;
  padding: 0.8rem;
}

.pr-footer {
  color: #64748b;
  font-size: 0.9rem;
  padding: 1.5rem;
  text-align: center;
}

@media (max-width: 1120px) {
  .pr-header-inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .pr-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: stretch;
    overflow-x: auto;
    padding-bottom: 0.15rem;
    scrollbar-width: none;
  }

  .pr-nav::-webkit-scrollbar {
    display: none;
  }

  .pr-lang {
    grid-column: 2;
    grid-row: 1;
  }

  .pr-shell {
    grid-template-columns: 1fr;
  }

  .pr-side {
    margin: 0 auto;
    max-width: 820px;
    width: 100%;
  }
}

@media (max-width: 820px) {
  .pr-page {
    padding: 1rem;
  }

  .pr-hero {
    grid-template-columns: 1fr;
  }

  .pr-steps {
    justify-content: flex-start;
  }

  .pr-toolbar {
    grid-template-columns: 1fr;
  }

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

  .pr-actions .pr-btn {
    flex: 1 1 9rem;
  }

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

  .pr-board.is-easy,
  .pr-board.is-medium,
  .pr-board.is-hard {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    max-width: 680px;
  }
}

@media (max-width: 620px) {
  .pr-levels {
    grid-template-columns: 1fr;
  }

  .pr-theme-grid {
    grid-template-columns: 1fr;
  }

  .pr-board.is-easy,
  .pr-board.is-medium,
  .pr-board.is-hard {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pr-card-front span {
    font-size: 0.7rem;
    padding: 0.3rem 0.25rem;
  }
}

@media (max-width: 520px) {
  .pr-header-inner {
    padding: 0.85rem 1rem;
  }

  .pr-brand {
    gap: 0.7rem;
  }

  .pr-brand img {
    height: 38px;
    width: 38px;
  }

  .pr-brand-name {
    font-size: 1.65rem;
  }

  .pr-brand-tagline {
    font-size: 0.9rem;
  }

  .pr-nav a,
  .pr-lang span {
    font-size: 0.95rem;
    min-height: 2.35rem;
    padding: 0.45rem 0.65rem;
  }

  .pr-btn {
    min-height: 2.95rem;
  }

  .pr-board.is-easy,
  .pr-board.is-medium,
  .pr-board.is-hard {
    gap: 0.42rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pr-card-inner,
  .pr-btn,
  .pr-level,
  .pr-theme {
    transition: none;
  }
}