/* =============================================================================
 * SERIGRAPHIE-BOUTIQUE — Lang Banner v0.2.0
 * =============================================================================
 * Bannière non-intrusive affichée en haut de page pour proposer (pas imposer)
 * un changement de langue selon la préférence navigateur.
 *
 * HTML généré dynamiquement par src/js/modules/lang-detect.js
 * Pas de CSS inline requis — tout est ici.
 * ============================================================================= */

.sb-lang-banner {
  position: sticky;
  top: 0;
  z-index: var(--sb-z-sticky);
  background-color: var(--sb-color-paper-alt);
  border-bottom: 1px solid var(--sb-color-cendre);
  padding: var(--sb-sp-3) var(--sb-sp-6);
  animation: sb-lang-banner-slide-in var(--sb-duration-normal) var(--sb-ease-out);
}

.sb-lang-banner.is-closing {
  animation: sb-lang-banner-slide-out var(--sb-duration-fast) var(--sb-ease-in);
}

@keyframes sb-lang-banner-slide-in {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

@keyframes sb-lang-banner-slide-out {
  from { transform: translateY(0); opacity: 1; }
  to   { transform: translateY(-100%); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .sb-lang-banner,
  .sb-lang-banner.is-closing {
    animation: none;
  }
}

.sb-lang-banner__inner {
  max-width: var(--sb-container-max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--sb-sp-3);
  flex-wrap: wrap;
  font-family: var(--sb-font-sans);
  font-size: var(--sb-fs-sm);
  line-height: var(--sb-lh-normal);
}

.sb-lang-banner__flag {
  font-size: var(--sb-fs-md);
  line-height: 1;
  flex-shrink: 0;
}

.sb-lang-banner__text {
  flex: 1;
  min-width: 200px;
  color: var(--sb-text-primary);
}

.sb-lang-banner__accept {
  background-color: var(--sb-color-ink);
  color: var(--sb-color-paper);
  border: none;
  padding: var(--sb-sp-2) var(--sb-sp-4);
  border-radius: var(--sb-radius-sm);
  font-family: var(--sb-font-sans);
  font-size: var(--sb-fs-sm);
  font-weight: var(--sb-fw-medium);
  cursor: pointer;
  white-space: nowrap;
  min-height: 36px;
  transition: background-color var(--sb-duration-fast) var(--sb-ease-out);
}

.sb-lang-banner__accept:hover {
  background-color: var(--sb-color-accent);
  color: var(--sb-text-on-accent);
}

.sb-lang-banner__accept:focus-visible {
  outline: none;
  box-shadow: var(--sb-shadow-focus);
}

.sb-lang-banner__decline {
  background-color: transparent;
  color: var(--sb-text-secondary);
  border: 1px solid var(--sb-color-cendre);
  padding: var(--sb-sp-2) var(--sb-sp-4);
  border-radius: var(--sb-radius-sm);
  font-family: var(--sb-font-sans);
  font-size: var(--sb-fs-sm);
  cursor: pointer;
  white-space: nowrap;
  min-height: 36px;
  transition:
    border-color var(--sb-duration-fast) var(--sb-ease-out),
    color var(--sb-duration-fast) var(--sb-ease-out);
}

.sb-lang-banner__decline:hover {
  border-color: var(--sb-color-graphite);
  color: var(--sb-text-primary);
}

.sb-lang-banner__decline:focus-visible {
  outline: none;
  box-shadow: var(--sb-shadow-focus);
}

.sb-lang-banner__close {
  background: transparent;
  border: none;
  color: var(--sb-text-secondary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 0 var(--sb-sp-2);
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--sb-radius-sm);
  transition: background-color var(--sb-duration-fast) var(--sb-ease-out);
}

.sb-lang-banner__close:hover {
  background-color: var(--sb-color-cendre-soft);
  color: var(--sb-text-primary);
}

.sb-lang-banner__close:focus-visible {
  outline: none;
  box-shadow: var(--sb-shadow-focus);
}

/* Mobile : stack en colonne */
@media (max-width: 640px) {
  .sb-lang-banner {
    padding: var(--sb-sp-3) var(--sb-sp-4);
  }
  .sb-lang-banner__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sb-sp-2);
  }
  .sb-lang-banner__text {
    width: 100%;
  }
  .sb-lang-banner__accept,
  .sb-lang-banner__decline {
    width: 100%;
  }
  .sb-lang-banner__close {
    position: absolute;
    top: var(--sb-sp-2);
    right: var(--sb-sp-3);
  }
}