/**
 * HomeUni — Extended Components
 * Forum, Chat, Working Papers, Announcements, Certificates, Video, SCORM
 */

/* ============================================================
   FORUM COMPONENTS
   ============================================================ */
.hu-forum-category-card {
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-5);
  cursor: pointer;
  transition: all var(--hu-transition-fast);
  display: flex;
  align-items: center;
  gap: var(--hu-space-4);
}
.hu-forum-category-card:hover { border-color: var(--hu-gold); box-shadow: var(--hu-shadow-gold); }
.hu-forum-category-card__icon { width: 48px; height: 48px; background: var(--hu-gold-pale); border-radius: var(--hu-radius-lg); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--hu-gold); flex-shrink: 0; }
.hu-forum-category-card__name { font-weight: var(--hu-font-semibold); margin-bottom: 2px; }
.hu-forum-category-card__desc { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); }
.hu-forum-category-card__count { margin-left: auto; text-align: right; flex-shrink: 0; }
.hu-forum-category-card__count .num { font-size: var(--hu-text-xl); font-weight: var(--hu-font-bold); color: var(--hu-gold); }
.hu-forum-category-card__count .lbl { font-size: var(--hu-text-xs); color: var(--hu-text-muted); }

.hu-thread-card {
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-5);
  margin-bottom: var(--hu-space-3);
  cursor: pointer;
  transition: all var(--hu-transition-fast);
  display: flex;
  gap: var(--hu-space-4);
}
.hu-thread-card:hover { border-color: rgba(21,101,192,0.3); background: var(--hu-bg-overlay); }
.hu-thread-card.pinned { border-left: 4px solid var(--hu-gold); }
.hu-thread-card__main { flex: 1; min-width: 0; }
.hu-thread-card__title { font-weight: var(--hu-font-semibold); font-size: var(--hu-text-base); margin-bottom: var(--hu-space-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hu-thread-card__meta { font-size: var(--hu-text-xs); color: var(--hu-text-secondary); display: flex; align-items: center; gap: var(--hu-space-3); flex-wrap: wrap; }
.hu-thread-card__stats { display: flex; flex-direction: column; align-items: flex-end; gap: var(--hu-space-1); flex-shrink: 0; font-size: var(--hu-text-xs); color: var(--hu-text-muted); }

.hu-post-card {
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-5);
  margin-bottom: var(--hu-space-4);
}
.hu-post-card.accepted { border-color: var(--hu-success); background: var(--hu-success-bg); }
.hu-post-card__header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: var(--hu-space-4); }
.hu-post-card__author { display: flex; align-items: center; gap: var(--hu-space-3); }
.hu-post-card__body { color: var(--hu-text-primary); line-height: var(--hu-leading-relaxed); font-size: var(--hu-text-sm); }

/* Reply indentation */
.hu-post-reply { margin-left: var(--hu-space-8); border-left: 2px solid var(--hu-border); padding-left: var(--hu-space-5); }
.hu-post-reply .hu-post-card { background: var(--hu-bg-surface); }

/* ============================================================
   CHAT COMPONENTS
   ============================================================ */
.hu-chat-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  height: calc(100vh - var(--hu-header-height) - var(--hu-space-12));
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  overflow: hidden;
}

.hu-chat-rooms {
  border-right: 1px solid var(--hu-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hu-chat-rooms__header {
  padding: var(--hu-space-4) var(--hu-space-5);
  border-bottom: 1px solid var(--hu-border);
  font-weight: var(--hu-font-semibold);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hu-chat-rooms__list { flex: 1; overflow-y: auto; padding: var(--hu-space-2); }

.hu-chat-room-item {
  display: flex;
  align-items: center;
  gap: var(--hu-space-3);
  padding: var(--hu-space-3) var(--hu-space-3);
  border-radius: var(--hu-radius-lg);
  cursor: pointer;
  transition: all var(--hu-transition-fast);
  margin-bottom: 2px;
}
.hu-chat-room-item:hover { background: var(--hu-bg-overlay); }
.hu-chat-room-item.active { background: var(--hu-gold-pale); }
.hu-chat-room-item__name { font-size: var(--hu-text-sm); font-weight: var(--hu-font-medium); }
.hu-chat-room-item__last { font-size: var(--hu-text-xs); color: var(--hu-text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 160px; }
.hu-chat-room-item__unread { background: var(--hu-gold); color: var(--hu-text-inverse); font-size: var(--hu-text-xs); font-weight: var(--hu-font-bold); padding: 2px 6px; border-radius: var(--hu-radius-full); min-width: 20px; text-align: center; }

.hu-chat-window {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hu-chat-window__header {
  padding: var(--hu-space-4) var(--hu-space-5);
  border-bottom: 1px solid var(--hu-border);
  display: flex;
  align-items: center;
  gap: var(--hu-space-3);
  background: var(--hu-bg-surface);
}

.hu-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--hu-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--hu-space-4);
}

.hu-message { display: flex; align-items: flex-end; gap: var(--hu-space-2); max-width: 70%; }
.hu-message.sent { margin-left: auto; flex-direction: row-reverse; }
.hu-message.received { margin-right: auto; }

.hu-message__bubble {
  padding: var(--hu-space-3) var(--hu-space-4);
  border-radius: var(--hu-radius-xl);
  font-size: var(--hu-text-sm);
  line-height: var(--hu-leading-relaxed);
  word-break: break-word;
}
.hu-message.received .hu-message__bubble { background: var(--hu-bg-overlay); border-bottom-left-radius: var(--hu-radius-sm); }
.hu-message.sent .hu-message__bubble { background: var(--hu-gold-pale); border: 1px solid rgba(21,101,192,0.3); color: var(--hu-text-primary); border-bottom-right-radius: var(--hu-radius-sm); }

.hu-message__time { font-size: 10px; color: var(--hu-text-muted); white-space: nowrap; }

.hu-chat-composer {
  padding: var(--hu-space-4) var(--hu-space-5);
  border-top: 1px solid var(--hu-border);
  display: flex;
  align-items: flex-end;
  gap: var(--hu-space-3);
  background: var(--hu-bg-surface);
}

.hu-chat-input {
  flex: 1;
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-3) var(--hu-space-4);
  font-size: var(--hu-text-sm);
  color: var(--hu-text-primary);
  font-family: var(--hu-font-sans);
  resize: none;
  max-height: 120px;
  outline: none;
  transition: border-color var(--hu-transition-fast);
}
.hu-chat-input:focus { border-color: var(--hu-gold); }
.hu-chat-input::placeholder { color: var(--hu-text-muted); }

/* ============================================================
   WORKING PAPERS
   ============================================================ */
.hu-paper-card {
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-5);
  transition: all var(--hu-transition-fast);
}
.hu-paper-card:hover { border-color: rgba(21,101,192,0.3); }

.hu-paper-card__header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--hu-space-4); margin-bottom: var(--hu-space-3); }
.hu-paper-card__title { font-weight: var(--hu-font-semibold); font-size: var(--hu-text-base); }
.hu-paper-card__abstract { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: var(--hu-space-4); }
.hu-paper-card__meta { font-size: var(--hu-text-xs); color: var(--hu-text-muted); display: flex; gap: var(--hu-space-4); }

/* Paper status timeline */
.hu-timeline { padding: var(--hu-space-4) 0; }
.hu-timeline-item { display: flex; gap: var(--hu-space-4); margin-bottom: var(--hu-space-4); position: relative; }
.hu-timeline-item:not(:last-child)::after { content: ''; position: absolute; left: 15px; top: 32px; bottom: -var(--hu-space-4); width: 2px; background: var(--hu-border); }
.hu-timeline-item__dot { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.875rem; flex-shrink: 0; background: var(--hu-bg-surface); border: 2px solid var(--hu-border); }
.hu-timeline-item__dot.active { background: var(--hu-gold-pale); border-color: var(--hu-gold); color: var(--hu-gold); }
.hu-timeline-item__dot.done { background: var(--hu-success-bg); border-color: var(--hu-success); color: var(--hu-success); }
.hu-timeline-item__dot.rejected { background: var(--hu-error-bg); border-color: var(--hu-error); color: var(--hu-error); }
.hu-timeline-item__content { flex: 1; padding-top: 4px; }
.hu-timeline-item__label { font-size: var(--hu-text-sm); font-weight: var(--hu-font-medium); }
.hu-timeline-item__time { font-size: var(--hu-text-xs); color: var(--hu-text-muted); }
.hu-timeline-item__notes { font-size: var(--hu-text-xs); color: var(--hu-text-secondary); margin-top: 4px; padding: var(--hu-space-2) var(--hu-space-3); background: var(--hu-bg-overlay); border-radius: var(--hu-radius-sm); }

/* ============================================================
   ANNOUNCEMENT BANNERS
   ============================================================ */
.hu-announcement-banner {
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-5);
  margin-bottom: var(--hu-space-4);
  border: 1px solid;
  position: relative;
  overflow: hidden;
}
.hu-announcement-banner.pinned { border-color: var(--hu-gold); background: var(--hu-gold-pale); }
.hu-announcement-banner.urgent { border-color: var(--hu-error); background: var(--hu-error-bg); }
.hu-announcement-banner.normal { border-color: var(--hu-border); background: var(--hu-bg-elevated); }
.hu-announcement-banner__pin { position: absolute; top: var(--hu-space-4); right: var(--hu-space-4); color: var(--hu-gold); font-size: 1rem; }
.hu-announcement-banner__title { font-weight: var(--hu-font-semibold); font-size: var(--hu-text-base); margin-bottom: var(--hu-space-2); padding-right: var(--hu-space-8); }
.hu-announcement-banner__body { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); line-height: var(--hu-leading-relaxed); }
.hu-announcement-banner__meta { font-size: var(--hu-text-xs); color: var(--hu-text-muted); margin-top: var(--hu-space-3); display: flex; gap: var(--hu-space-4); }

/* ============================================================
   POLICY DOCUMENT CARDS
   ============================================================ */
.hu-policy-card {
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-5);
  display: flex;
  align-items: center;
  gap: var(--hu-space-4);
  transition: all var(--hu-transition-fast);
}
.hu-policy-card:hover { border-color: rgba(21,101,192,0.3); }
.hu-policy-card__icon { width: 48px; height: 48px; background: var(--hu-error-bg); border-radius: var(--hu-radius-lg); display: flex; align-items: center; justify-content: center; color: var(--hu-error); font-size: 1.5rem; flex-shrink: 0; }
.hu-policy-card__info { flex: 1; min-width: 0; }
.hu-policy-card__title { font-weight: var(--hu-font-semibold); font-size: var(--hu-text-sm); margin-bottom: 2px; }
.hu-policy-card__meta { font-size: var(--hu-text-xs); color: var(--hu-text-muted); }

/* ============================================================
   CERTIFICATE CARD
   ============================================================ */
.hu-cert-card {
  background: var(--hu-gradient-hero);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-2xl);
  padding: var(--hu-space-6);
  position: relative;
  overflow: hidden;
  transition: all var(--hu-transition-base);
}
.hu-cert-card:hover { border-color: var(--hu-gold); box-shadow: var(--hu-shadow-gold); }
.hu-cert-card::before { content: ''; position: absolute; top: -30px; right: -30px; width: 120px; height: 120px; border-radius: 50%; background: var(--hu-gold-pale); }
.hu-cert-card::after { content: ''; position: absolute; bottom: -20px; left: -20px; width: 80px; height: 80px; border-radius: 50%; background: var(--hu-gold-glow); }
.hu-cert-card__title { font-size: var(--hu-text-lg); font-weight: var(--hu-font-bold); color: var(--hu-gold); margin-bottom: var(--hu-space-2); position: relative; }
.hu-cert-card__programme { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); margin-bottom: var(--hu-space-4); position: relative; }
.hu-cert-card__number { font-family: var(--hu-font-mono); font-size: var(--hu-text-xs); color: var(--hu-text-muted); position: relative; }
.hu-cert-card__actions { display: flex; gap: var(--hu-space-3); margin-top: var(--hu-space-4); position: relative; }

/* ============================================================
   VIDEO PLAYER
   ============================================================ */
.hu-video-wrapper {
  position: relative;
  border-radius: var(--hu-radius-xl);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--hu-border);
}
.hu-video-wrapper video { width: 100%; display: block; }
.hu-video-embed { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; }
.hu-video-embed iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

/* ============================================================
   SCORM PLAYER
   ============================================================ */
.hu-scorm-player {
  background: var(--hu-bg-surface);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  overflow: hidden;
}
.hu-scorm-player__toolbar {
  padding: var(--hu-space-3) var(--hu-space-5);
  background: var(--hu-bg-elevated);
  border-bottom: 1px solid var(--hu-border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: var(--hu-text-sm);
}
.hu-scorm-player iframe { width: 100%; height: 600px; border: 0; display: block; }

/* ============================================================
   LESSON SIDEBAR (module accordion)
   ============================================================ */
.hu-lesson-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 0;
  height: calc(100vh - var(--hu-header-height) - var(--hu-space-12));
}

.hu-lesson-sidebar {
  border-right: 1px solid var(--hu-border);
  overflow-y: auto;
  background: var(--hu-bg-surface);
  border-radius: var(--hu-radius-xl) 0 0 var(--hu-radius-xl);
}

.hu-module-item { border-bottom: 1px solid var(--hu-border); }
.hu-module-item__header { padding: var(--hu-space-4) var(--hu-space-5); cursor: pointer; display: flex; align-items: center; gap: var(--hu-space-3); font-weight: var(--hu-font-semibold); font-size: var(--hu-text-sm); transition: background var(--hu-transition-fast); }
.hu-module-item__header:hover { background: var(--hu-bg-elevated); }
.hu-module-item__chevron { margin-left: auto; transition: transform var(--hu-transition-fast); }
.hu-module-item.open .hu-module-item__chevron { transform: rotate(180deg); }
.hu-module-item__lessons { padding: var(--hu-space-2) 0; display: none; }
.hu-module-item.open .hu-module-item__lessons { display: block; }

.hu-lesson-item { padding: var(--hu-space-3) var(--hu-space-5) var(--hu-space-3) var(--hu-space-8); cursor: pointer; display: flex; align-items: center; gap: var(--hu-space-3); font-size: var(--hu-text-sm); color: var(--hu-text-secondary); transition: all var(--hu-transition-fast); }
.hu-lesson-item:hover { color: var(--hu-text-primary); background: var(--hu-bg-elevated); }
.hu-lesson-item.active { color: var(--hu-gold); background: var(--hu-gold-pale); }
.hu-lesson-item.completed .hu-lesson-item__check { color: var(--hu-success); }
.hu-lesson-item__check { width: 18px; height: 18px; flex-shrink: 0; }
.hu-lesson-item__label { flex: 1; }
.hu-lesson-item__duration { font-size: var(--hu-text-xs); color: var(--hu-text-muted); }

.hu-lesson-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--hu-space-8);
  background: var(--hu-bg-elevated);
  border-radius: 0 var(--hu-radius-xl) var(--hu-radius-xl) 0;
}

/* ============================================================
   PAGINATION
   ============================================================ */
.hu-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--hu-space-2);
  padding: var(--hu-space-4) var(--hu-space-6);
  border-top: 1px solid var(--hu-border);
}
.hu-page-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--hu-radius-md);
  border: 1px solid var(--hu-border);
  background: none;
  color: var(--hu-text-secondary);
  cursor: pointer;
  font-size: var(--hu-text-sm);
  transition: all var(--hu-transition-fast);
}
.hu-page-btn:hover { background: var(--hu-gold-pale); color: var(--hu-gold); border-color: var(--hu-gold); }
.hu-page-btn.active { background: var(--hu-gold); color: var(--hu-text-inverse); border-color: var(--hu-gold); }
.hu-page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ============================================================
   SEARCH BAR
   ============================================================ */
.hu-search {
  position: relative;
  display: flex;
  align-items: center;
}
.hu-search__input {
  background: var(--hu-bg-surface);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-md);
  padding: var(--hu-space-3) var(--hu-space-4) var(--hu-space-3) 2.5rem;
  font-size: var(--hu-text-sm);
  color: var(--hu-text-primary);
  outline: none;
  width: 280px;
  transition: all var(--hu-transition-fast);
}
.hu-search__input:focus { border-color: var(--hu-gold); width: 320px; box-shadow: 0 0 0 3px var(--hu-gold-pale); }
.hu-search__icon { position: absolute; left: 10px; color: var(--hu-text-muted); font-size: 1rem; pointer-events: none; }

/* ============================================================
   FILTER SIDEBAR (for browse programmes)
   ============================================================ */
.hu-filter-sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-5);
  height: fit-content;
  position: sticky;
  top: calc(var(--hu-header-height) + var(--hu-space-4));
}
.hu-filter-sidebar__title { font-weight: var(--hu-font-semibold); margin-bottom: var(--hu-space-5); font-size: var(--hu-text-sm); color: var(--hu-text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.hu-filter-group { margin-bottom: var(--hu-space-6); }
.hu-filter-group__label { font-size: var(--hu-text-sm); font-weight: var(--hu-font-medium); margin-bottom: var(--hu-space-3); }

/* ============================================================
   CHECKBOX & RADIO
   ============================================================ */
.hu-checkbox-item, .hu-radio-item {
  display: flex;
  align-items: center;
  gap: var(--hu-space-2);
  cursor: pointer;
  padding: var(--hu-space-2) 0;
  font-size: var(--hu-text-sm);
  color: var(--hu-text-secondary);
  transition: color var(--hu-transition-fast);
}
.hu-checkbox-item:hover, .hu-radio-item:hover { color: var(--hu-text-primary); }
.hu-checkbox-item input[type="checkbox"], .hu-radio-item input[type="radio"] { accent-color: var(--hu-gold); width: 16px; height: 16px; cursor: pointer; }

/* ============================================================
   RICH TEXT CONTENT DISPLAY
   ============================================================ */
.hu-richtext { color: var(--hu-text-primary); line-height: var(--hu-leading-relaxed); font-size: var(--hu-text-sm); }
.hu-richtext h1, .hu-richtext h2, .hu-richtext h3 { margin: var(--hu-space-5) 0 var(--hu-space-3); }
.hu-richtext p { margin-bottom: var(--hu-space-4); }
.hu-richtext ul, .hu-richtext ol { margin-bottom: var(--hu-space-4); padding-left: var(--hu-space-6); }
.hu-richtext li { margin-bottom: var(--hu-space-2); }
.hu-richtext blockquote { border-left: 4px solid var(--hu-gold); padding-left: var(--hu-space-4); color: var(--hu-text-secondary); font-style: italic; margin: var(--hu-space-4) 0; }
.hu-richtext code { font-family: var(--hu-font-mono); background: var(--hu-bg-overlay); padding: 2px 6px; border-radius: var(--hu-radius-sm); font-size: 0.9em; }
.hu-richtext pre { background: var(--hu-bg-surface); border: 1px solid var(--hu-border); border-radius: var(--hu-radius-md); padding: var(--hu-space-4); overflow-x: auto; margin: var(--hu-space-4) 0; }
.hu-richtext a { color: var(--hu-gold); }
.hu-richtext img { border-radius: var(--hu-radius-md); max-width: 100%; }
.hu-richtext table { width: 100%; border-collapse: collapse; margin: var(--hu-space-4) 0; }
.hu-richtext th, .hu-richtext td { border: 1px solid var(--hu-border); padding: var(--hu-space-3); }
.hu-richtext th { background: var(--hu-bg-elevated); font-weight: var(--hu-font-semibold); }

/* ============================================================
   FILE UPLOAD AREA
   ============================================================ */
.hu-dropzone {
  border: 2px dashed var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-10);
  text-align: center;
  cursor: pointer;
  transition: all var(--hu-transition-fast);
  background: var(--hu-bg-surface);
}
.hu-dropzone:hover, .hu-dropzone.drag-over { border-color: var(--hu-gold); background: var(--hu-gold-pale); }
.hu-dropzone__icon { font-size: 2.5rem; color: var(--hu-text-muted); margin-bottom: var(--hu-space-3); }
.hu-dropzone__text { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); }
.hu-dropzone__hint { font-size: var(--hu-text-xs); color: var(--hu-text-muted); margin-top: var(--hu-space-2); }

/* ============================================================
   NOTIFICATIONS LIST
   ============================================================ */
.hu-notif-item {
  display: flex;
  align-items: flex-start;
  gap: var(--hu-space-3);
  padding: var(--hu-space-4);
  border-bottom: 1px solid var(--hu-border-subtle);
  transition: background var(--hu-transition-fast);
  cursor: pointer;
}
.hu-notif-item:hover { background: var(--hu-bg-overlay); }
.hu-notif-item.unread { background: rgba(21,101,192,0.05); }
.hu-notif-item.unread::before { content: ''; width: 8px; height: 8px; background: var(--hu-gold); border-radius: 50%; flex-shrink: 0; margin-top: 6px; }
.hu-notif-item__icon { width: 36px; height: 36px; border-radius: var(--hu-radius-md); display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0; }
.hu-notif-item__title { font-size: var(--hu-text-sm); font-weight: var(--hu-font-medium); margin-bottom: 2px; }
.hu-notif-item__message { font-size: var(--hu-text-xs); color: var(--hu-text-secondary); }
.hu-notif-item__time { font-size: var(--hu-text-xs); color: var(--hu-text-muted); margin-top: 4px; }

/* Notification dropdown */
.hu-notif-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: -8px;
  width: 380px;
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  box-shadow: var(--hu-shadow-xl);
  z-index: var(--hu-z-dropdown);
  overflow: hidden;
  animation: hu-fade-in 150ms ease;
}
.hu-notif-dropdown__header { padding: var(--hu-space-4) var(--hu-space-5); border-bottom: 1px solid var(--hu-border); display: flex; align-items: center; justify-content: space-between; font-weight: var(--hu-font-semibold); font-size: var(--hu-text-sm); }
.hu-notif-dropdown__list { max-height: 400px; overflow-y: auto; }
.hu-notif-dropdown__footer { padding: var(--hu-space-3) var(--hu-space-5); border-top: 1px solid var(--hu-border); text-align: center; }

/* ============================================================
   NOTIFICATION ITEM — BEM variants (used in templates.js / card_notification.html)
   ============================================================ */
.hu-notif-item--unread { background: rgba(21,101,192,0.05); }
.hu-notif-item--unread .hu-notif-item__title { font-weight: var(--hu-font-semibold); }
.hu-notif-item--compact { padding: var(--hu-space-3) var(--hu-space-4); }
.hu-notif-item--compact .hu-notif-item__title { font-size: var(--hu-text-xs); }
.hu-notif-item__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--hu-gold); flex-shrink: 0; margin-top: 6px; }
.hu-notif-item__mark-btn {
  opacity: 0;
  border: none;
  background: none;
  color: var(--hu-text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: var(--hu-space-1);
  border-radius: var(--hu-radius-sm);
  transition: all var(--hu-transition-fast);
  flex-shrink: 0;
}
.hu-notif-item:hover .hu-notif-item__mark-btn { opacity: 1; }
.hu-notif-item__mark-btn:hover { color: var(--hu-gold); background: var(--hu-gold-pale); }

/* ============================================================
   LESSON ITEM — BEM variants (used in card_lesson.html)
   ============================================================ */
.hu-lesson-item { position: relative; }
.hu-lesson-item__icon { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; font-size: 1rem; color: var(--hu-gold-dim); flex-shrink: 0; }
.hu-lesson-item__info { flex: 1; min-width: 0; }
.hu-lesson-item__title { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); display: block; }
.hu-lesson-item__link { color: inherit; text-decoration: none; }
.hu-lesson-item__link:hover { color: var(--hu-text-primary); }
.hu-lesson-item__meta { display: flex; align-items: center; gap: var(--hu-space-2); font-size: var(--hu-text-xs); color: var(--hu-text-muted); margin-top: 2px; flex-wrap: wrap; }
.hu-lesson-item__type { text-transform: capitalize; }
.hu-lesson-item__duration { display: flex; align-items: center; gap: 2px; }
.hu-lesson-item__actions { display: flex; gap: var(--hu-space-1); opacity: 0; transition: opacity var(--hu-transition-fast); }
.hu-lesson-item:hover .hu-lesson-item__actions { opacity: 1; }
.hu-lesson-item--active { background: var(--hu-gold-pale); }
.hu-lesson-item--active .hu-lesson-item__title,
.hu-lesson-item--active .hu-lesson-item__link { color: var(--hu-gold); }
.hu-lesson-item--locked { opacity: 0.55; cursor: not-allowed; pointer-events: none; }
.hu-lesson-item--done .hu-lesson-item__icon { color: var(--hu-success); }

/* ============================================================
   CERTIFICATE CARD — new design with seal icon
   ============================================================ */
.hu-certificate-card {
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-xl);
  padding: var(--hu-space-5);
  display: flex;
  align-items: center;
  gap: var(--hu-space-5);
  transition: all var(--hu-transition-fast);
  margin-bottom: var(--hu-space-4);
}
.hu-certificate-card:hover { border-color: var(--hu-gold); box-shadow: var(--hu-shadow-gold); }
.hu-certificate-card__seal {
  width: 52px; height: 52px;
  background: var(--hu-gold-pale);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  color: var(--hu-gold);
  flex-shrink: 0;
}
.hu-certificate-card__info { flex: 1; min-width: 0; }
.hu-certificate-card__programme { font-weight: var(--hu-font-semibold); font-size: var(--hu-text-sm); margin-bottom: var(--hu-space-1); }
.hu-certificate-card__meta { font-size: var(--hu-text-xs); color: var(--hu-text-secondary); margin-bottom: var(--hu-space-2); }
.hu-certificate-card__details { display: flex; gap: var(--hu-space-4); font-size: var(--hu-text-xs); color: var(--hu-text-muted); flex-wrap: wrap; }
.hu-certificate-card__details span { display: flex; align-items: center; gap: 4px; }
.hu-certificate-card__actions { display: flex; gap: var(--hu-space-2); flex-shrink: 0; flex-wrap: wrap; }

/* Skeleton variant */
.hu-certificate-card--skeleton { pointer-events: none; }

/* ============================================================
   SECTION HEADER
   ============================================================ */
.hu-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--hu-space-4);
  margin-bottom: var(--hu-space-6);
  flex-wrap: wrap;
}
.hu-section-header__title { font-size: var(--hu-text-xl); font-weight: var(--hu-font-bold); margin: 0; }
.hu-section-header__subtitle { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); margin: var(--hu-space-1) 0 0; }
.hu-section-header__actions { display: flex; gap: var(--hu-space-3); align-items: center; flex-wrap: wrap; }

/* ============================================================
   BREADCRUMB
   ============================================================ */
.hu-breadcrumb { margin-bottom: var(--hu-space-4); }
.hu-breadcrumb__list { display: flex; align-items: center; gap: var(--hu-space-1); list-style: none; padding: 0; margin: 0; flex-wrap: wrap; }
.hu-breadcrumb__item { display: flex; align-items: center; gap: var(--hu-space-1); font-size: var(--hu-text-sm); }
.hu-breadcrumb__link { color: var(--hu-text-secondary); text-decoration: none; transition: color var(--hu-transition-fast); }
.hu-breadcrumb__link:hover { color: var(--hu-gold); }
.hu-breadcrumb__current { color: var(--hu-text-primary); font-weight: var(--hu-font-medium); }
.hu-breadcrumb__sep { color: var(--hu-text-muted); font-size: 1rem; display: flex; align-items: center; }

/* ============================================================
   PAGINATION — BEM classes (hu-pagination__page, etc.)
   ============================================================ */
.hu-pagination__btn, .hu-pagination__page {
  min-width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--hu-radius-md);
  border: 1px solid var(--hu-border);
  background: none;
  color: var(--hu-text-secondary);
  cursor: pointer;
  font-size: var(--hu-text-sm);
  transition: all var(--hu-transition-fast);
  padding: 0 var(--hu-space-2);
}
.hu-pagination__btn:hover,
.hu-pagination__page:hover { background: var(--hu-gold-pale); color: var(--hu-gold); border-color: var(--hu-gold); }
.hu-pagination__page--active { background: var(--hu-gold); color: var(--hu-text-inverse) !important; border-color: var(--hu-gold); font-weight: var(--hu-font-semibold); }
.hu-pagination__btn:disabled,
.hu-pagination__page:disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
.hu-pagination__pages { display: flex; align-items: center; gap: var(--hu-space-1); }
.hu-pagination__ellipsis { color: var(--hu-text-muted); padding: 0 var(--hu-space-1); font-size: var(--hu-text-sm); }
.hu-pagination__summary { font-size: var(--hu-text-xs); color: var(--hu-text-muted); margin-left: var(--hu-space-3); white-space: nowrap; }

/* ============================================================
   EMPTY STATE
   ============================================================ */
.hu-empty-state {
  text-align: center;
  padding: var(--hu-space-16) var(--hu-space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--hu-space-3);
}
.hu-empty-state__icon {
  width: 80px; height: 80px;
  background: var(--hu-bg-elevated);
  border: 1px solid var(--hu-border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  color: var(--hu-text-muted);
  margin-bottom: var(--hu-space-2);
}
.hu-empty-state__title { font-size: var(--hu-text-lg); font-weight: var(--hu-font-semibold); color: var(--hu-text-primary); margin: 0; }
.hu-empty-state__message { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); max-width: 360px; margin: 0; }

/* ============================================================
   ERROR STATE
   ============================================================ */
.hu-error-state {
  text-align: center;
  padding: var(--hu-space-16) var(--hu-space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--hu-space-3);
}
.hu-error-state__icon {
  width: 80px; height: 80px;
  background: var(--hu-error-bg);
  border: 1px solid var(--hu-error-border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  color: var(--hu-error);
  margin-bottom: var(--hu-space-2);
}
.hu-error-state__title { font-size: var(--hu-text-lg); font-weight: var(--hu-font-semibold); color: var(--hu-text-primary); margin: 0; }
.hu-error-state__message { font-size: var(--hu-text-sm); color: var(--hu-text-secondary); max-width: 360px; margin: 0; }
.hu-error-state__actions { display: flex; gap: var(--hu-space-3); align-items: center; flex-wrap: wrap; justify-content: center; }

/* ============================================================
   USER CELL (table avatar + name + email)
   ============================================================ */
.hu-user-cell { display: flex; align-items: center; gap: var(--hu-space-3); }
.hu-user-cell__info { min-width: 0; }
.hu-user-cell__name { font-size: var(--hu-text-sm); font-weight: var(--hu-font-medium); color: var(--hu-text-primary); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 180px; }
.hu-user-cell__email { font-size: var(--hu-text-xs); color: var(--hu-text-muted); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 180px; }

/* ============================================================
   ICON BUTTON (small action buttons inside tables / lesson items)
   ============================================================ */
.hu-icon-btn {
  border: none;
  background: none;
  color: var(--hu-text-muted);
  cursor: pointer;
  border-radius: var(--hu-radius-sm);
  padding: var(--hu-space-2);
  display: inline-flex; align-items: center; justify-content: center;
  transition: all var(--hu-transition-fast);
  font-size: 1rem;
}
.hu-icon-btn:hover { color: var(--hu-text-primary); background: var(--hu-bg-overlay); }
.hu-icon-btn--sm { padding: var(--hu-space-1); font-size: .875rem; }
.hu-icon-btn--danger:hover { color: var(--hu-error); background: var(--hu-error-bg); }

/* ============================================================
   SECTION LOADER (inline, not full-screen)
   ============================================================ */
.hu-section-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--hu-space-3);
  padding: var(--hu-space-10);
}
.hu-section-loader__text { font-size: var(--hu-text-sm); color: var(--hu-text-muted); }

/* ============================================================
   PROGRAMME CARD — extra BEM parts used in templates
   ============================================================ */
.hu-programme-card__img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform var(--hu-transition-base); }
.hu-programme-card:hover .hu-programme-card__img { transform: scale(1.04); }
.hu-programme-card__img-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 2.5rem; color: var(--hu-gold-dim); background: var(--hu-gradient-hero); }
.hu-programme-card__status-badge { position: absolute; top: var(--hu-space-3); left: var(--hu-space-3); }
.hu-programme-card__tags { display: flex; flex-wrap: wrap; gap: var(--hu-space-2); margin-bottom: var(--hu-space-3); }
.hu-programme-card__title-link { color: inherit; text-decoration: none; }
.hu-programme-card__title-link:hover { color: var(--hu-gold); }
.hu-programme-card__desc { font-size: var(--hu-text-xs); color: var(--hu-text-secondary); line-height: var(--hu-leading-relaxed); margin-bottom: var(--hu-space-3); }
.hu-programme-card__meta { display: flex; gap: var(--hu-space-3); flex-wrap: wrap; margin-bottom: var(--hu-space-3); }
.hu-programme-card__meta-item { display: flex; align-items: center; gap: 4px; font-size: var(--hu-text-xs); color: var(--hu-text-muted); }
.hu-programme-card__progress { margin-bottom: var(--hu-space-3); }
.hu-programme-card__progress-label { font-size: var(--hu-text-xs); color: var(--hu-text-muted); margin-top: var(--hu-space-1); display: block; }
.hu-programme-card__footer { display: flex; align-items: center; justify-content: space-between; gap: var(--hu-space-2); margin-top: auto; padding-top: var(--hu-space-3); }
.hu-programme-card__price--free { color: var(--hu-success); }
.hu-programme-card__actions { display: flex; gap: var(--hu-space-2); }
.hu-programme-card--enrolled { border-color: rgba(21,101,192,0.3); }
.hu-programme-card--skeleton { pointer-events: none; cursor: default; }

/* ============================================================
   STAT CARD — trend variants
   ============================================================ */
.hu-stat-card__header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: var(--hu-space-3); }
.hu-stat-card__trend {
  display: inline-flex; align-items: center; gap: 2px;
  font-size: var(--hu-text-xs); font-weight: var(--hu-font-semibold);
  padding: 2px 6px; border-radius: var(--hu-radius-full);
}
.hu-stat-card__trend--up { color: var(--hu-success); background: var(--hu-success-bg); }
.hu-stat-card__trend--down { color: var(--hu-error); background: var(--hu-error-bg); }
.hu-stat-card__period { font-size: var(--hu-text-xs); color: var(--hu-text-muted); margin-top: var(--hu-space-1); }
.hu-stat-card--clickable:hover { cursor: pointer; border-color: var(--hu-gold); box-shadow: var(--hu-shadow-gold); }
.hu-stat-card--skeleton { pointer-events: none; }

/* ========================================================================
   Folder Browser (Working Papers)
   ======================================================================== */
.hu-folder-browser {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.hu-folder {
  background: var(--hu-bg-surface);
  border: 1px solid var(--hu-border);
  border-radius: var(--hu-radius-lg, 12px);
  overflow: hidden;
  transition: border-color .15s;
}

.hu-folder:hover {
  border-color: var(--hu-border-focus);
}

.hu-folder__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--hu-bg-elevated);
  user-select: none;
  transition: background .15s;
}

.hu-folder__header:hover {
  background: var(--hu-bg-overlay);
}

.hu-folder__name {
  font-weight: 600;
  font-size: .95rem;
  color: var(--hu-text-primary);
}

.hu-folder__body {
  padding: .25rem 1.25rem 1rem;
  border-top: 1px solid var(--hu-border);
}

.hu-paper-card {
  transition: box-shadow .15s, border-color .15s, transform .1s;
}

.hu-paper-card:hover {
  border-color: var(--hu-gold);
  box-shadow: 0 4px 16px rgba(21,101,192,.15);
  transform: translateY(-2px);
}