.group-hero-section {
  background: var(--bg-page, #f8fafc);
  padding-top: 20px;
  transition: background-color 0.3s ease;
}

.group-hero-card {
  background: linear-gradient(135deg, var(--tg-blue, #0088cc) 0%, #005580 100%);
  padding: 42px 30px 38px;
  border-radius: 20px;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 136, 204, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.group-hero-bg-glow {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0) 70%);
  pointer-events: none;
  border-radius: 50%;
}

.group-hero-content {
  position: relative;
  z-index: 1;
  max-width: 750px;
  margin: 0 auto;
}

.group-image-wrapper {
  display: inline-block;
  position: relative;
}

.group-image-hero {
  width: 150px !important;
  height: 150px !important;
  border-radius: 16px !important;
  object-fit: cover !important;
  border: none !important;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2) !important;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  background: var(--bg-card, #ffffff);
}

.group-image-hero:hover {
  transform: scale(1.05) rotate(-2deg);
}

.group-title-hero {
  font-size: 2.1rem;
  font-weight: 800;
  margin: 14px 0 0 0;
  color: #ffffff !important;
  letter-spacing: -0.4px;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.group-detail-section {
  background: var(--bg-page, #f8fafc);
  position: relative;
  z-index: 2;
  transition: background-color 0.3s ease;
}

.group-main-card {
  background: var(--bg-card, #ffffff);
  border-radius: 20px;
  border: 1px solid var(--border-color, #e2e8f0);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.03);
  overflow: hidden;
}

[data-theme="dark"] .group-main-card {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.btn-join-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 48px;
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--tg-blue, #0088cc) 0%, #006699 100%);
  color: #ffffff !important;
  text-decoration: none;
  border-radius: 14px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 6px 20px rgba(0, 136, 204, 0.35);
}

.btn-join-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 136, 204, 0.45);
  background: linear-gradient(135deg, #0099e6 0%, #0088cc 100%);
  color: #ffffff !important;
}

.group-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 16px 0 0;
}

.stat-box {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: rgba(0, 136, 204, 0.04);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 12px;
  text-align: left;
}

.stat-box i {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted, #64748b);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 14px;
  color: var(--text-main, #1e293b);
  font-weight: 700;
  margin-top: 1px;
}

.card-modern {
  background: var(--bg-card, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 16px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
  overflow: hidden;
}

.card-header-modern {
  background: var(--bg-card, #ffffff);
  border-bottom: 1px solid var(--border-color, #e2e8f0);
  padding: 16px 24px;
}

.card-header-modern h2 {
  color: var(--text-main, #0f172a);
  font-weight: 700;
}

.card-body-modern {
  padding: 24px;
  background: var(--bg-card, #ffffff);
  color: var(--text-main, #334155);
}

.group-description-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-main, #334155);
}

.admin-note-text {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-main, #334155);
}

.btn-report-modern {
  border-radius: 10px;
  padding: 8px 16px;
  font-weight: 600;
  font-size: 13.5px;
}

.share-box-modern {
  display: flex;
  align-items: center;
  gap: 10px;
}

.share-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted, #64748b);
  white-space: nowrap;
}

.form-control-modern {
  background: var(--bg-card, #ffffff);
  color: var(--text-main, #0f172a);
  border-color: var(--border-color, #cbd5e1);
  border-radius: 8px 0 0 8px;
}

.btn-copy-modern {
  border-radius: 0 8px 8px 0;
  background: var(--tg-blue, #0088cc);
  border-color: var(--tg-blue, #0088cc);
}

.btn-copy-modern:hover {
  background: #0077b5;
  border-color: #0077b5;
}

.modal-content-modern {
  background: var(--bg-card, #ffffff);
  color: var(--text-main, #0f172a);
  border-radius: 16px;
  border: 1px solid var(--border-color, #e2e8f0);
}

.modal-header-modern, .modal-footer-modern {
  border-color: var(--border-color, #e2e8f0);
}

@media (max-width: 768px) {
  .group-hero-modern {
    padding: 30px 0 50px;
  }

  .group-image-hero {
    width: 120px !important;
    height: 120px !important;
    border-radius: 16px !important;
    border: none !important;
  }

  .group-title-hero {
    font-size: 1.6rem;
  }

  .btn-join-hero {
    width: 100%;
    padding: 14px 24px;
    font-size: 1.05rem;
  }

  .group-stats-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .share-box-modern {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Dark Mode Overrides for Rich HTML Content */
[data-theme="dark"] .admin-note-text,
[data-theme="dark"] .admin-note-text *,
[data-theme="dark"] .group-description-text,
[data-theme="dark"] .group-description-text * {
  color: var(--text-main, #e2e8f0) !important;
}

[data-theme="dark"] .admin-note-text h1,
[data-theme="dark"] .admin-note-text h2,
[data-theme="dark"] .admin-note-text h3,
[data-theme="dark"] .admin-note-text h4,
[data-theme="dark"] .admin-note-text strong,
[data-theme="dark"] .group-description-text h1,
[data-theme="dark"] .group-description-text h2,
[data-theme="dark"] .group-description-text h3,
[data-theme="dark"] .group-description-text strong {
  color: #ffffff !important;
}

[data-theme="dark"] .admin-note-text a,
[data-theme="dark"] .group-description-text a {
  color: #38bdf8 !important;
}

/* Fix light-background warning/info boxes inserted from admin panel in Dark Mode */
[data-theme="dark"] .admin-note-text [style*="background"],
[data-theme="dark"] .group-description-text [style*="background"] {
  background-color: rgba(239, 68, 68, 0.12) !important;
  background-image: none !important;
  border-color: rgba(239, 68, 68, 0.3) !important;
}

[data-theme="dark"] .admin-note-text [style*="background"] *,
[data-theme="dark"] .group-description-text [style*="background"] * {
  color: #fca5a5 !important;
}

[data-theme="dark"] .admin-note-text [style*="background"] strong,
[data-theme="dark"] .admin-note-text [style*="background"] h1,
[data-theme="dark"] .admin-note-text [style*="background"] h2,
[data-theme="dark"] .admin-note-text [style*="background"] h3,
[data-theme="dark"] .admin-note-text [style*="background"] h4,
[data-theme="dark"] .group-description-text [style*="background"] strong,
[data-theme="dark"] .group-description-text [style*="background"] h1,
[data-theme="dark"] .group-description-text [style*="background"] h2,
[data-theme="dark"] .group-description-text [style*="background"] h3,
[data-theme="dark"] .group-description-text [style*="background"] h4 {
  color: #ef4444 !important;
}

[data-theme="dark"] .stat-box {
  background: rgba(255, 255, 255, 0.04);
}