/* =========================================================
   KSP Forum - Complete Forum Stylesheet
   Premium Bootstrap 5 + Custom Design System
   ========================================================= */

/* ─── 1. CSS Custom Properties ──────────────────────────── */
:root {
  --forum-primary: #1e6fd9;
  --forum-primary-dark: #1558b0;
  --forum-primary-light: #e8f1fd;
  --forum-accent: #f97316;
  --forum-success: #16a34a;
  --forum-warning: #d97706;
  --forum-danger: #dc2626;
  --forum-bg: #f0f4f8;
  --forum-surface: #ffffff;
  --forum-border: #e2e8f0;
  --forum-text: #1e293b;
  --forum-text-muted: #64748b;
  --forum-shadow: 0 2px 12px rgba(0,0,0,0.08);
  --forum-shadow-hover: 0 8px 32px rgba(30,111,217,0.15);
  --forum-radius: 12px;
  --forum-radius-sm: 8px;
  --forum-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --forum-gradient: linear-gradient(135deg, #1e40af 0%, #1e6fd9 50%, #0ea5e9 100%);
  --font-forum: 'Inter', 'Roboto', system-ui, sans-serif;
}

/* ─── 2. Base Wrapper ────────────────────────────────────── */
.ksp-forum-wrapper {
  font-family: var(--font-forum);
  color: var(--forum-text);
  background: var(--forum-bg);
  min-height: 100vh;
}

.forum-main-container {
  padding-top: 2rem;
  padding-bottom: 4rem;
}

/* ─── 3. Forum Hero Banner ───────────────────────────────── */
.forum-hero {
  background: var(--forum-gradient);
  padding: 4rem 0 3rem;
  position: relative;
  overflow: hidden;
}

.forum-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

.forum-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}

.forum-hero-content {
  position: relative;
  z-index: 2;
}

.forum-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  padding: 6px 16px;
  border-radius: 99px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  border: 1px solid rgba(255,255,255,0.2);
}

.forum-hero-title {
  color: #fff;
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.forum-hero-subtitle {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 2rem;
}

.forum-hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Hero Stats */
.forum-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  position: relative;
  z-index: 2;
}

.forum-hero-stats .stat-card {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--forum-radius);
  padding: 1.5rem 1rem;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: var(--forum-transition);
}

.forum-hero-stats .stat-card:hover {
  background: rgba(255,255,255,0.2);
  transform: translateY(-3px);
}

.forum-hero-stats .stat-number {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.forum-hero-stats .stat-label {
  color: rgba(255,255,255,0.75);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

/* ─── 4. Buttons ─────────────────────────────────────────── */
.btn-forum-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--forum-primary);
  border: 2px solid transparent;
  padding: 10px 24px;
  border-radius: 99px;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--forum-transition);
  cursor: pointer;
}

.btn-forum-primary:hover {
  background: var(--forum-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(30,111,217,0.35);
}

.btn-forum-primary.on-dark-bg {
  background: var(--forum-primary);
  color: #fff;
}

.btn-forum-primary.on-dark-bg:hover {
  background: var(--forum-primary-dark);
}

.btn-forum-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
  padding: 10px 24px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--forum-transition);
}

.btn-forum-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}

/* ─── 5. Forum Sections ──────────────────────────────────── */
.forum-section {
  background: var(--forum-surface);
  border-radius: var(--forum-radius);
  box-shadow: var(--forum-shadow);
  overflow: hidden;
}

.forum-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--forum-border);
  background: linear-gradient(to right, rgba(30,111,217,0.04), transparent);
}

.forum-section-header h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--forum-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.forum-section-header h2 i {
  color: var(--forum-primary);
}

.filter-tabs {
  display: flex;
  gap: 4px;
}

.filter-tab {
  padding: 5px 14px;
  border-radius: 99px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--forum-text-muted);
  text-decoration: none;
  transition: var(--forum-transition);
  border: 1px solid transparent;
}

.filter-tab:hover,
.filter-tab.active {
  background: var(--forum-primary);
  color: #fff;
}

/* ─── 6. Forum Categories Grid ───────────────────────────── */
.forum-categories-grid {
  padding: 0;
}

.forum-category-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--forum-border);
  transition: var(--forum-transition);
  cursor: pointer;
}

.forum-category-card:last-child {
  border-bottom: none;
}

.forum-category-card:hover {
  background: var(--forum-primary-light);
}

.cat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--forum-radius-sm);
  background: var(--forum-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--forum-primary);
  font-size: 1.25rem;
  flex-shrink: 0;
  transition: var(--forum-transition);
}

.forum-category-card:hover .cat-icon {
  background: var(--forum-primary);
  color: #fff;
}

.cat-info {
  flex: 1;
  min-width: 0;
}

.cat-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--forum-primary);
  text-decoration: none;
  display: block;
  margin-bottom: 4px;
}

.cat-name:hover {
  color: var(--forum-primary-dark);
}

.cat-desc {
  font-size: 0.85rem;
  color: var(--forum-text-muted);
  margin: 0 0 8px;
  line-height: 1.5;
}

.cat-meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--forum-text-muted);
}

.cat-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.cat-last-topic {
  min-width: 180px;
  max-width: 200px;
  text-align: right;
}

.last-topic-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--forum-text-muted);
  margin-bottom: 4px;
}

.last-topic-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--forum-text);
  text-decoration: none;
  display: block;
  line-height: 1.4;
}

.last-topic-title:hover {
  color: var(--forum-primary);
}

.last-topic-time {
  font-size: 0.75rem;
  color: var(--forum-text-muted);
  margin-top: 3px;
}

/* ─── 7. Forum Topic Rows ────────────────────────────────── */
.forum-topic-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--forum-border);
  transition: var(--forum-transition);
  position: relative;
}

.forum-topic-row:last-child {
  border-bottom: none;
}

.forum-topic-row:hover {
  background: #f8fafc;
  transform: translateX(3px);
}

.forum-topic-row.is-pinned {
  background: #fffbeb;
  border-left: 3px solid var(--forum-warning);
}

.forum-topic-row.status-solved {
  border-left: 3px solid var(--forum-success);
}

.forum-topic-row.status-locked {
  opacity: 0.85;
}

.topic-icon {
  font-size: 1.2rem;
  color: var(--forum-text-muted);
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}

.topic-body {
  flex: 1;
  min-width: 0;
}

.topic-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 5px;
}

.topic-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--forum-text);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.2s;
}

.topic-title:hover {
  color: var(--forum-primary);
}

.topic-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--forum-text-muted);
}

.topic-meta a {
  color: var(--forum-text-muted);
  text-decoration: none;
}

.topic-meta a:hover {
  color: var(--forum-primary);
}

.topic-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.topic-stats {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

.topic-stats .stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 40px;
  font-size: 0.78rem;
  color: var(--forum-text-muted);
}

.topic-stats .stat-item i {
  font-size: 0.85rem;
  margin-bottom: 2px;
}

.topic-stats .stat-item span {
  font-weight: 600;
  color: var(--forum-text);
}

/* ─── 8. Badges ──────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-pinned {
  background: #fef3c7;
  color: #92400e;
}

.badge-status-solved {
  background: #dcfce7;
  color: #166534;
}

.badge-status-closed {
  background: #fee2e2;
  color: #991b1b;
}

.badge-status-locked {
  background: #f1f5f9;
  color: #475569;
}

.badge-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  background: var(--forum-primary-light);
  color: var(--forum-primary);
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 700;
}

/* ─── 9. Sidebar Cards ───────────────────────────────────── */
.forum-sidebar-card {
  background: var(--forum-surface);
  border-radius: var(--forum-radius);
  box-shadow: var(--forum-shadow);
  overflow: hidden;
}

.sidebar-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--forum-text);
  border-bottom: 1px solid var(--forum-border);
  background: linear-gradient(to right, rgba(30,111,217,0.04), transparent);
}

.sidebar-card-header i {
  color: var(--forum-primary);
}

.sidebar-actions {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-action-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--forum-radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--forum-transition);
  position: relative;
}

.sidebar-action-btn.primary {
  background: var(--forum-primary);
  color: #fff;
}

.sidebar-action-btn.primary:hover {
  background: var(--forum-primary-dark);
  transform: translateX(3px);
}

.sidebar-action-btn.secondary {
  background: var(--forum-bg);
  color: var(--forum-text);
  border: 1px solid var(--forum-border);
}

.sidebar-action-btn.secondary:hover {
  background: var(--forum-primary-light);
  color: var(--forum-primary);
  border-color: var(--forum-primary);
}

.notif-badge {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--forum-danger);
  color: #fff;
  border-radius: 99px;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-topic-list {
  padding: 0.5rem 0;
}

.sidebar-topic-item {
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--forum-border);
}

.sidebar-topic-item:last-child {
  border-bottom: none;
}

.sidebar-topic-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--forum-text);
  text-decoration: none;
  display: block;
  margin-bottom: 4px;
  line-height: 1.4;
}

.sidebar-topic-title:hover {
  color: var(--forum-primary);
}

.sidebar-topic-meta {
  display: flex;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--forum-text-muted);
}

.sidebar-category-list {
  list-style: none;
  padding: 0.5rem 0;
  margin: 0;
}

.sidebar-category-list li {
  border-bottom: 1px solid var(--forum-border);
}

.sidebar-category-list li:last-child {
  border-bottom: none;
}

.sidebar-category-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 1.25rem;
  font-size: 0.85rem;
  color: var(--forum-text);
  text-decoration: none;
  transition: var(--forum-transition);
}

.sidebar-category-list a:hover,
.sidebar-category-list a.active {
  color: var(--forum-primary);
  background: var(--forum-primary-light);
  padding-left: 1.5rem;
}

.sidebar-category-list .badge-count {
  margin-left: auto;
}

/* ─── 10. Stats Widget ───────────────────────────────────── */
.forum-stats-widget .stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.forum-stats-widget .stat-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 1.25rem;
  border-bottom: 1px solid var(--forum-border);
  transition: var(--forum-transition);
}

.forum-stats-widget .stat-item:last-child {
  border-bottom: none;
}

.forum-stats-widget .stat-item:hover {
  background: var(--forum-bg);
}

.forum-stats-widget .stat-item i {
  font-size: 1.25rem;
  width: 28px;
}

.forum-stats-widget .stat-num {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--forum-text);
  line-height: 1;
}

.forum-stats-widget .stat-lbl {
  font-size: 0.75rem;
  color: var(--forum-text-muted);
}

/* ─── 11. Breadcrumbs ────────────────────────────────────── */
.forum-breadcrumbs {
  background: var(--forum-surface);
  border-bottom: 1px solid var(--forum-border);
  padding: 10px 0;
}

.forum-breadcrumbs .breadcrumb {
  margin: 0;
  font-size: 0.82rem;
}

.forum-breadcrumbs .breadcrumb-item a {
  color: var(--forum-primary);
  text-decoration: none;
}

.forum-breadcrumbs .breadcrumb-item.active {
  color: var(--forum-text-muted);
}

/* ─── 12. Page Header ────────────────────────────────────── */
.forum-page-header {
  padding: 1.5rem 0;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--forum-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-desc {
  font-size: 0.95rem;
  color: var(--forum-text-muted);
  margin-top: 6px;
}

/* ─── 13. Filter Tabs (full) ─────────────────────────────── */
.forum-filter-tabs {
  background: var(--forum-surface);
  border-radius: var(--forum-radius);
  padding: 8px 12px;
  box-shadow: var(--forum-shadow);
}

.filter-tabs-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* ─── 14. Search Bar ─────────────────────────────────────── */
.forum-search-bar {
  background: var(--forum-surface);
  border-radius: var(--forum-radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--forum-shadow);
}

.forum-search-input {
  border-radius: var(--forum-radius-sm) 0 0 var(--forum-radius-sm);
  border-color: var(--forum-border);
  padding: 10px 16px;
  font-size: 0.95rem;
}

.forum-search-input:focus {
  border-color: var(--forum-primary);
  box-shadow: 0 0 0 3px rgba(30,111,217,0.15);
}

.forum-cat-select {
  border-color: var(--forum-border);
}

/* ─── 15. Pagination ─────────────────────────────────────── */
.forum-pagination .page-link {
  color: var(--forum-primary);
  border-color: var(--forum-border);
  border-radius: var(--forum-radius-sm);
  margin: 0 2px;
  font-weight: 600;
}

.forum-pagination .page-item.active .page-link {
  background: var(--forum-primary);
  border-color: var(--forum-primary);
}

.forum-pagination .page-link:hover {
  background: var(--forum-primary-light);
  color: var(--forum-primary);
}

/* ─── 16. Empty State ────────────────────────────────────── */
.forum-empty-state {
  padding: 3rem;
  text-align: center;
  color: var(--forum-text-muted);
}

.forum-empty-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}

.forum-empty-state h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--forum-text);
}

.forum-empty-state a {
  color: var(--forum-primary);
  text-decoration: none;
  font-weight: 600;
}

/* ─── 17. User Profile Page ──────────────────────────────── */
.forum-profile-card {
  background: var(--forum-surface);
  border-radius: var(--forum-radius);
  box-shadow: var(--forum-shadow);
  padding: 2rem;
  text-align: center;
  position: sticky;
  top: 100px;
}

.profile-avatar-wrapper {
  margin-bottom: 1rem;
}

.profile-avatar-placeholder {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--forum-gradient);
  color: #fff;
  font-size: 2.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  box-shadow: 0 4px 20px rgba(30,111,217,0.3);
}

.profile-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--forum-text);
  margin-bottom: 4px;
}

.profile-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.profile-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 700;
}

.profile-badge.badge-admin {
  background: #fef3c7;
  color: #92400e;
}

.profile-badge.badge-mod {
  background: #e0e7ff;
  color: #3730a3;
}

.profile-badge.badge-gold {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #fff;
}

.profile-badge.badge-silver {
  background: linear-gradient(135deg, #94a3b8, #64748b);
  color: #fff;
}

.profile-stats {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.profile-stat {
  text-align: center;
}

.profile-stat-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--forum-primary);
}

.profile-stat-lbl {
  font-size: 0.75rem;
  color: var(--forum-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── 18. Like / Bookmark Buttons ────────────────────────── */
.forum-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--forum-border);
  background: var(--forum-surface);
  color: var(--forum-text-muted);
  cursor: pointer;
  transition: var(--forum-transition);
  text-decoration: none;
}

.forum-action-btn:hover {
  border-color: var(--forum-primary);
  color: var(--forum-primary);
  background: var(--forum-primary-light);
}

.forum-action-btn.liked,
.forum-action-btn.active {
  background: #fee2e2;
  border-color: #fca5a5;
  color: var(--forum-danger);
}

.forum-action-btn.bookmarked {
  background: #fef3c7;
  border-color: #fde68a;
  color: #b45309;
}

/* ─── 19. Notifications Panel ────────────────────────────── */
.forum-notifications-panel {
  background: var(--forum-surface);
  border-radius: var(--forum-radius);
  box-shadow: var(--forum-shadow-hover);
  border: 1px solid var(--forum-border);
  overflow: hidden;
  position: fixed;
  top: 70px;
  right: 20px;
  width: 360px;
  max-height: 500px;
  overflow-y: auto;
  z-index: 9999;
  display: none;
  animation: slideDown 0.25s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.notif-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--forum-border);
  font-weight: 700;
  font-size: 0.9rem;
  position: sticky;
  top: 0;
  background: var(--forum-surface);
}

.notif-mark-read {
  font-size: 0.75rem;
  color: var(--forum-primary);
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
}

.notif-item {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--forum-border);
  transition: background 0.2s;
  text-decoration: none;
  color: var(--forum-text);
}

.notif-item:hover {
  background: var(--forum-bg);
}

.notif-item.unread {
  background: var(--forum-primary-light);
}

.notif-item.unread:hover {
  background: #d1e5fc;
}

.notif-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--forum-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--forum-primary);
  font-size: 0.9rem;
  flex-shrink: 0;
}

.notif-content {
  flex: 1;
  min-width: 0;
}

.notif-message {
  font-size: 0.85rem;
  line-height: 1.4;
  margin-bottom: 3px;
}

.notif-time {
  font-size: 0.75rem;
  color: var(--forum-text-muted);
}

.unread-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--forum-primary);
  flex-shrink: 0;
  margin-top: 8px;
}

/* ─── 20. Animations ─────────────────────────────────────── */
@keyframes pulse-like {
  0% { transform: scale(1); }
  30% { transform: scale(1.35); }
  60% { transform: scale(0.9); }
  100% { transform: scale(1); }
}

.pulse-animate i {
  animation: pulse-like 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.forum-topic-row {
  animation: fadeIn 0.3s ease both;
}

/* ─── 21. Responsive ─────────────────────────────────────── */
@media (max-width: 767px) {
  .forum-hero-title { font-size: 1.8rem; }
  .forum-hero { padding: 2.5rem 0 2rem; }
  .topic-stats { display: none; }
  .cat-last-topic { display: none !important; }
  .forum-filter-tabs .filter-tabs-group { gap: 4px; }
  .filter-tab { padding: 4px 10px; font-size: 0.75rem; }
  .forum-category-card { padding: 1rem; }
  .forum-notifications-panel { right: 10px; width: calc(100vw - 20px); }
}

@media (max-width: 576px) {
  .forum-hero-actions { flex-direction: column; }
  .btn-forum-primary,
  .btn-forum-outline { width: 100%; justify-content: center; }
}