/* ==========================================================================
   Layout — coquille (barre latérale fixe + colonne principale + bandeau)
   ========================================================================== */

.shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

/* --- Barre latérale ------------------------------------------------------ */

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  width: var(--sidebar-width);
  padding: var(--space-6) var(--space-5) var(--space-5);
  background:
    linear-gradient(180deg, oklch(18% 0.04 256 / 0.92), oklch(14% 0.035 258 / 0.97));
  border-right: var(--border-hairline);
  backdrop-filter: blur(18px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.sidebar::after {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent,
    var(--color-flame) 22%,
    var(--color-flame-deep) 55%,
    transparent
  );
  opacity: 0.55;
}

.sidebar__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding-bottom: var(--space-6);
}

.sidebar__sigil {
  width: 7rem;
  height: 7rem;
  filter: drop-shadow(0 0 18px var(--color-halo));
}

.sidebar__wordmark {
  font-family: var(--font-display);
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: center;
}

.sidebar__nav {
  flex: 1;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.nav-link {
  position: relative;
  display: block;
  padding: 0.72rem 0.9rem 0.72rem 1.05rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  transition:
    color var(--duration-fast) var(--ease-out-expo),
    background-color var(--duration-fast) var(--ease-out-expo),
    padding-left var(--duration-normal) var(--ease-out-expo);
}

.nav-link::before {
  content: "";
  position: absolute;
  inset: 0.35rem auto 0.35rem 0;
  width: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-flame);
  opacity: 0;
  transform: scaleY(0.2);
  transform-origin: center;
  transition:
    opacity var(--duration-normal) var(--ease-out-expo),
    transform var(--duration-normal) var(--ease-out-expo);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
  background: oklch(84% 0.135 206 / 0.06);
  padding-left: 1.35rem;
}

.nav-link[aria-current="true"] {
  color: var(--color-flame-bright);
  background: oklch(84% 0.135 206 / 0.09);
  padding-left: 1.35rem;
  text-shadow: 0 0 14px var(--color-halo);
}

.nav-link[aria-current="true"]::before,
.nav-link:hover::before {
  opacity: 1;
  transform: scaleY(1);
  box-shadow: var(--glow-sm);
}

.sidebar__foot {
  padding-top: var(--space-6);
  border-top: var(--border-hairline);
  font-size: var(--text-nano);
  line-height: 1.55;
  color: var(--color-text-faint);
}

.sidebar__foot dt {
  margin-bottom: 0.2rem;
  color: var(--color-text-muted);
  font-family: var(--font-display);
  font-size: var(--text-nano);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

.sidebar__foot dd {
  margin: 0 0 var(--space-4);
}

.social-row {
  display: flex;
  gap: 0.55rem;
  padding-top: var(--space-2);
}

.social-row a {
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-faint);
  transition:
    color var(--duration-fast) var(--ease-out-expo),
    transform var(--duration-fast) var(--ease-out-expo),
    background-color var(--duration-fast) var(--ease-out-expo);
}

.social-row a:hover {
  color: var(--color-flame-bright);
  background: oklch(84% 0.135 206 / 0.1);
  transform: translateY(-2px);
}

.social-row svg {
  width: 1rem;
  height: 1rem;
}

/* --- Colonne principale -------------------------------------------------- */

.main {
  grid-column: 2;
  min-width: 0;
  padding-bottom: var(--ticker-height);
}

.section {
  position: relative;
  padding: var(--space-section) var(--space-gutter);
}

.section--tight {
  padding-top: calc(var(--space-section) * 0.55);
}

.section__inner {
  max-width: var(--content-max);
  margin-inline: auto;
}

.section--alt {
  background: linear-gradient(
    180deg,
    transparent,
    oklch(20% 0.04 254 / 0.55) 18%,
    oklch(20% 0.04 254 / 0.55) 82%,
    transparent
  );
}

/* Filet lumineux de séparation entre sections. */
.section + .section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: min(38rem, 70%);
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, var(--color-flame-deep), transparent);
  opacity: 0.42;
}

/* --- Bandeau d'actualités (bas d'écran) ---------------------------------- */

.ticker {
  position: fixed;
  inset: auto 0 0 var(--sidebar-width);
  z-index: 55;
  display: flex;
  align-items: center;
  height: var(--ticker-height);
  background: linear-gradient(90deg, oklch(20% 0.04 254 / 0.94), oklch(24% 0.045 246 / 0.94));
  border-top: var(--border-hairline);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

.ticker__label {
  flex: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: 100%;
  padding: 0 var(--space-4);
  background: oklch(84% 0.135 206 / 0.1);
  border-right: var(--border-hairline);
  font-family: var(--font-display);
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-flame-bright);
  white-space: nowrap;
}

.ticker__viewport {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 3%, #000 94%, transparent);
}

.ticker__track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: ticker-scroll 52s linear infinite;
}

/* Deux groupes identiques : la translation de -50 % boucle sans couture. */
.ticker__group {
  display: flex;
  align-items: center;
  gap: var(--space-7);
  padding-left: var(--space-7);
  padding-right: var(--space-7);
}

.ticker:hover .ticker__track {
  animation-play-state: paused;
}

.ticker__item {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: var(--text-small);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.ticker__date {
  font-family: var(--font-display);
  font-size: var(--text-nano);
  letter-spacing: var(--tracking-wide);
  color: var(--color-flame);
  text-transform: uppercase;
}

.ticker__donate {
  flex: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: 100%;
  padding: 0 var(--space-5);
  border: 0;
  border-left: var(--border-hairline);
  background: transparent;
  color: var(--color-flame-bright);
  font-family: var(--font-display);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out-expo);
}

.ticker__donate:hover {
  background: oklch(84% 0.135 206 / 0.14);
}

.ticker__donate svg {
  width: 1rem;
  height: 1rem;
}

/* --- Bascule mobile ------------------------------------------------------ */

.nav-toggle {
  position: fixed;
  top: 0.85rem;
  left: 0.85rem;
  z-index: 80;
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.9rem;
  border: var(--border-glow);
  border-radius: var(--radius-pill);
  background: oklch(18% 0.04 256 / 0.9);
  color: var(--color-flame-bright);
  font-family: var(--font-display);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  cursor: pointer;
  backdrop-filter: blur(12px);
}

.nav-toggle__bars {
  position: relative;
  width: 1rem;
  height: 0.7rem;
}

.nav-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--duration-normal) var(--ease-out-expo), opacity var(--duration-fast);
}

.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { top: 50%; }
.nav-toggle__bars span:nth-child(3) { top: 100%; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(0.35rem) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-0.35rem) rotate(-45deg);
}

.sidebar__scrim {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: oklch(10% 0.03 258 / 0.75);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out-expo), visibility var(--duration-normal);
}

/* --- Responsive ---------------------------------------------------------- */

@media (max-width: 62rem) {
  :root {
    --sidebar-width: 15.5rem;
  }

  .shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .main {
    grid-column: 1;
  }

  .nav-toggle {
    display: flex;
  }

  .sidebar {
    /* Dégage la place du bouton flottant qui recouvre le coin supérieur. */
    padding-top: 4.75rem;
    transform: translateX(-102%);
    transition: transform var(--duration-normal) var(--ease-out-expo);
    box-shadow: var(--shadow-lift);
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  .sidebar.is-open ~ .sidebar__scrim,
  .sidebar__scrim.is-visible {
    opacity: 1;
    visibility: visible;
  }

  .ticker {
    left: 0;
  }

  .ticker__label span,
  .ticker__donate span {
    display: none;
  }
}

@media (max-width: 34rem) {
  :root {
    --ticker-height: 3.5rem;
  }

  .ticker__label {
    padding: 0 0.85rem;
  }
}