.nuonat-groupes-feed-header-card,
.nuonat-groupes-feed-header-card * {
  box-sizing: border-box;
}

.nuonat-groupes-feed-header-card {
  position: relative;
  overflow: hidden;
  width: 100%;
  border-radius: 18px;
  background:
    radial-gradient(circle at top right, rgba(79, 124, 255, .13), transparent 65%),
    linear-gradient(135deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid rgba(79, 124, 255, .10);
  box-shadow: 0 8px 24px rgba(29, 41, 57, .08);
}

.nuonat-groupes-feed-header-card::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 170px;
  height: 170px;
  background: radial-gradient(circle, rgba(79, 124, 255, .10), transparent 70%);
  pointer-events: none;
}

.nuonat-groupes-feed-header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px;
}

.nuonat-groupes-feed-header-left {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.nuonat-groupes-feed-header-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #4f7cff, #42d77d);
  color: #fff;
  font-size: 13px;
  box-shadow: 0 6px 14px rgba(79, 124, 255, .22);
}

.nuonat-groupes-feed-header-text {
  min-width: 0;
}

.nuonat-groupes-feed-header-title {
  color: #1f2937;
  font-size: 15px;
  font-weight: 900;
  line-height: 1.15;
}

.nuonat-groupes-feed-header-subtitle {
  margin-top: 4px;
  color: #7d8aa2;
  font-size: 12px;
  line-height: 1.35;
}

.nuonat-groupes-feed-joined-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(79, 124, 255, .09);
  color: #4f7cff !important;
  font-size: 12px;
  font-weight: 900;
  text-decoration: none !important;
  transition: all .18s ease;
}

.nuonat-groupes-feed-joined-btn:hover {
  background: rgba(79, 124, 255, .14);
  transform: translateY(-1px);
}

body.night-mode .nuonat-groupes-feed-header-card,
body.dark-mode .nuonat-groupes-feed-header-card {
  background:
    radial-gradient(circle at top right, rgba(79, 124, 255, .16), transparent 65%),
    linear-gradient(135deg, #111827 0%, #07112b 100%);
  border-color: rgba(255, 255, 255, .06);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .28);
}

body.night-mode .nuonat-groupes-feed-header-title,
body.dark-mode .nuonat-groupes-feed-header-title {
  color: #ffffff;
}

body.night-mode .nuonat-groupes-feed-header-subtitle,
body.dark-mode .nuonat-groupes-feed-header-subtitle {
  color: rgba(255, 255, 255, .62);
}

body.night-mode .nuonat-groupes-feed-joined-btn,
body.dark-mode .nuonat-groupes-feed-joined-btn {
  background: rgba(255, 255, 255, .06);
  color: #8fb1ff !important;
}

@media (max-width: 576px) {

  .nuonat-groupes-feed-header-card {
    border-radius: 16px;
  }

  .nuonat-groupes-feed-header-inner {
    padding: 12px;
    gap: 9px;
  }

  .nuonat-groupes-feed-header-left {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 8px;
  }

  .nuonat-groupes-feed-header-icon {
    width: 32px;
    height: 32px;
    min-width: 32px;
    border-radius: 10px;
    font-size: 12px;
  }

  .nuonat-groupes-feed-header-title {
    font-size: 14px;
  }

  .nuonat-groupes-feed-header-subtitle {
    font-size: 11px;
  }

  .nuonat-groupes-feed-joined-btn {
    padding: 7px 9px;
    font-size: 11px;
  }

  .nuonat-groupes-feed-joined-btn span {
    display: none;
  }
}