/* ============================================================
   Athenaeum — Engagement Styles
   Covers: Gamification Badges, Leaderboard, Doubt Forum
============================================================ */

/* ══════════════════════════════════════════════════════════
   SHARED SECTION HEADER (reused across engagement modules)
══════════════════════════════════════════════════════════ */
.eng-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: .75rem;
}
.eng-section-header h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--clr-primary, #005088);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.eng-section-header h2 .section-emoji { font-size: 1.3rem; }
.eng-section-header .see-all {
  font-size: .8rem;
  font-weight: 700;
  color: var(--clr-secondary, #11CAA0);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: .2rem;
  transition: opacity .2s;
}
.eng-section-header .see-all:hover { opacity: .75; }

/* ══════════════════════════════════════════════════════════
   XP / LEVEL BAR  (inside the stat-grid on student dash)
══════════════════════════════════════════════════════════ */
.xp-card {
  grid-column: 1 / -1;           /* spans full row width */
  background: linear-gradient(135deg, var(--clr-primary, #005088), #00365c);
  color: #fff;
  border-radius: var(--radius-lg, 12px);
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  box-shadow: 0 4px 12px rgba(0,0,0,.05);
  border: none;
}
.xp-avatar-wrap {
  position: relative;
  flex-shrink: 0;
}
.xp-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  border: 3px solid rgba(255,215,0,.6);
  display: grid; place-items: center;
  font-size: 1.4rem; font-weight: 900; color: #fff;
}
.xp-level-badge {
  position: absolute;
  bottom: -6px; right: -6px;
  width: 24px; height: 24px;
  background: var(--clr-accent, #FFD700);
  color: #4a3500;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: .65rem; font-weight: 900;
  border: 2px solid #fff;
}
.xp-info { flex: 1; min-width: 200px; }
.xp-info .xp-greeting { font-size: .8rem; opacity: .75; margin-bottom: .2rem; }
.xp-info .xp-name     { font-size: 1.1rem; font-weight: 800; margin-bottom: .6rem; }
.xp-bar-wrap { position: relative; }
.xp-bar-track {
  width: 100%; height: 10px;
  background: rgba(255,255,255,.15);
  border-radius: 5px; overflow: hidden;
}
.xp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-secondary, #11CAA0), var(--clr-accent, #FFD700));
  border-radius: 5px;
  width: 68%;
  animation: xp-grow 1.2s ease-out;
}
@keyframes xp-grow { from { width: 0; } }
.xp-bar-label {
  display: flex; justify-content: space-between;
  font-size: .7rem; opacity: .8; margin-top: .35rem;
}
.xp-stats {
  display: flex; gap: 2rem;
  flex-wrap: wrap;
}
.xp-stat { text-align: center; }
.xp-stat .val { font-size: 1.5rem; font-weight: 900; color: var(--clr-accent, #FFD700); line-height: 1; }
.xp-stat .lbl { font-size: .7rem; opacity: .75; margin-top: .15rem; text-transform: uppercase; letter-spacing: .06em; }

/* ══════════════════════════════════════════════════════════
   BADGES / ACHIEVEMENTS GRID
══════════════════════════════════════════════════════════ */
.achievements-card {
  background: #fff;
  border-radius: var(--radius-lg, 12px);
  border: 1px solid #e2e8f0;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,.05);
}

.badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 1rem;
}

.badge-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.25rem .75rem 1rem;
  border-radius: var(--radius-md, 8px);
  border: 1.5px solid #e2e8f0;
  background: #fff;
  position: relative;
  cursor: default;
  transition: transform .2s ease, box-shadow .2s ease;
  overflow: hidden;
}
.badge-card:not(.locked):hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0,80,136,.12);
}

/* Unlocked glow border */
.badge-card.unlocked {
  border-color: transparent;
  background: linear-gradient(#fff,#fff) padding-box,
              linear-gradient(135deg, var(--clr-secondary,#11CAA0), var(--clr-accent,#FFD700)) border-box;
}

/* Locked overlay */
.badge-card.locked {
  background: #f8fafc;
  border-style: dashed;
  border-color: #cbd5e1;
  cursor: not-allowed;
}
.badge-card.locked .badge-icon-wrap,
.badge-card.locked .badge-name,
.badge-card.locked .badge-desc {
  filter: grayscale(1);
  opacity: .45;
}

/* "EARNED" ribbon */
.earned-ribbon {
  position: absolute;
  top: 10px; right: -18px;
  background: var(--clr-secondary, #11CAA0);
  color: #fff;
  font-size: .55rem;
  font-weight: 900;
  letter-spacing: .1em;
  padding: .25rem 1.6rem;
  transform: rotate(38deg);
  box-shadow: 0 2px 6px rgba(17,202,160,.4);
}

/* Lock overlay icon */
.lock-overlay {
  position: absolute;
  bottom: .6rem; right: .6rem;
  color: #94a3b8;
  font-size: 1rem;
}
.lock-overlay .material-symbols-outlined { font-size: 1rem; }

.badge-icon-wrap {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 1.75rem;
  margin-bottom: .75rem;
  background: var(--clr-primary-light, #e6f0f7);
  transition: transform .2s;
}
.badge-card:not(.locked):hover .badge-icon-wrap { transform: scale(1.1) rotate(-5deg); }

.badge-name {
  font-size: .8rem;
  font-weight: 800;
  color: var(--clr-primary, #005088);
  line-height: 1.3;
  margin-bottom: .3rem;
}
.badge-desc {
  font-size: .68rem;
  color: #64748b;
  line-height: 1.4;
}

/* Progress under partially-earned badges */
.badge-progress {
  width: 100%;
  margin-top: .6rem;
}
.badge-progress-track {
  width: 100%; height: 4px;
  background: #e2e8f0; border-radius: 2px; overflow: hidden;
}
.badge-progress-fill {
  height: 100%;
  background: var(--clr-secondary, #11CAA0);
  border-radius: 2px;
  transition: width .8s ease;
}
.badge-progress-label {
  font-size: .62rem;
  color: #64748b;
  margin-top: .25rem;
  text-align: right;
}

/* ══════════════════════════════════════════════════════════
   GLOBAL LEADERBOARD
══════════════════════════════════════════════════════════ */
.leaderboard-card {
  background: #fff;
  border-radius: var(--radius-lg, 12px);
  border: 1px solid #e2e8f0;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,.05);
}

/* Top-3 podium strip */
.podium-strip {
  background: linear-gradient(135deg, var(--clr-primary,#005088) 0%, #003a66 100%);
  padding: 1.25rem 1rem 1.75rem;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: .75rem;
}
.podium-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  color: #fff;
}
.podium-item .p-rank {
  font-size: .65rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .75;
}
.podium-item .p-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: .8rem; font-weight: 900;
  color: #fff;
  border: 3px solid rgba(255,255,255,.2);
}
.podium-item.rank-1 .p-avatar {
  width: 46px; height: 46px;
  border-color: var(--clr-accent,#FFD700);
  font-size: 1rem;
  box-shadow: 0 0 20px rgba(255,215,0,.4);
}
.podium-item .p-name  { font-size: .7rem; font-weight: 700; text-align: center; max-width: 70px; }
.podium-item .p-pts   { font-size: .75rem; font-weight: 800; color: var(--clr-accent,#FFD700); }
.podium-item .p-medal { font-size: 1.4rem; }
.podium-item.rank-1   { order: 2; padding-bottom: .75rem; }
.podium-item.rank-2   { order: 1; }
.podium-item.rank-3   { order: 3; }

/* Ranked list */
.lb-list {
  list-style: none;
  padding: .5rem 0;
}
.lb-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .7rem 1.25rem;
  border-bottom: 1px solid #f1f5f9;
  transition: background .15s;
}
.lb-item:last-child { border-bottom: none; }
.lb-item:hover { background: #f8fafc; }
.lb-item.me {
  background: var(--clr-primary-light, #e6f0f7);
  border-left: 3px solid var(--clr-primary, #005088);
}
.lb-rank {
  width: 26px;
  font-size: .8rem;
  font-weight: 900;
  color: #94a3b8;
  text-align: center;
  flex-shrink: 0;
}
.lb-item.me .lb-rank { color: var(--clr-primary, #005088); }
.lb-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: .7rem; font-weight: 800; color: #fff;
  flex-shrink: 0;
}
.lb-info { flex: 1; min-width: 0; }
.lb-info .lb-name { font-size: .85rem; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb-info .lb-course { font-size: .68rem; color: #64748b; }
.lb-pts {
  font-size: .875rem;
  font-weight: 800;
  color: var(--clr-primary, #005088);
  white-space: nowrap;
}
.lb-item.me .lb-pts { color: var(--clr-secondary, #11CAA0); }
.lb-trend {
  font-size: .7rem;
  display: flex;
  align-items: center;
  gap: .1rem;
  min-width: 28px;
  justify-content: flex-end;
}
.lb-trend.up   { color: #10b981; }
.lb-trend.down { color: #ef4444; }
.lb-trend.same { color: #94a3b8; }
.lb-trend .material-symbols-outlined { font-size: .9rem; }

/* ══════════════════════════════════════════════════════════
   DOUBT-SOLVING FORUM
══════════════════════════════════════════════════════════ */
.forum-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 60px;
}

.forum-section {
  background: #fff;
  border-radius: var(--radius-xl, 16px);
  border: 1px solid #e2e8f0;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,.05);
}

.forum-header {
  background: linear-gradient(135deg, var(--clr-primary,#005088), #003d6b);
  color: #fff;
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.forum-header-left { display: flex; align-items: center; gap: .75rem; }
.forum-header-icon {
  width: 44px; height: 44px;
  background: rgba(255,255,255,.12);
  border-radius: var(--radius-md, 8px);
  display: grid; place-items: center;
  font-size: 1.4rem;
}
.forum-header h3 { font-size: 20px; font-weight: 800; margin-bottom: .1rem; }
.forum-header p  { font-size: .78rem; opacity: .8; }
.forum-stats-pills { display: flex; gap: .5rem; flex-wrap: wrap; }
.forum-pill {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 99px;
  padding: .3rem .85rem;
  font-size: .72rem;
  font-weight: 700;
  color: rgba(255,255,255,.9);
  display: flex; align-items: center; gap: .3rem;
}
.forum-pill .material-symbols-outlined { font-size: .85rem; }

/* Ask a doubt form */
.forum-ask-bar {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid #f1f5f9;
  background: #fafcff;
}
.ask-bar-form {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
}
.ask-bar-avatar {
  width: 28px; height: 28px; flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg,var(--clr-primary,#005088),var(--clr-secondary,#11CAA0));
  display: grid; place-items: center;
  font-size: .7rem; font-weight: 900; color: #fff;
  margin-top: .1rem;
}
.ask-bar-input {
  flex: 1;
  padding: .75rem 1rem;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-lg,1rem);
  font-family: var(--font-main,'Urbanist',sans-serif);
  font-size: .875rem;
  resize: none;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  background: #fff;
  min-height: 44px;
  max-height: 140px;
}
.ask-bar-input:focus {
  border-color: var(--clr-primary,#005088);
  box-shadow: 0 0 0 4px rgba(0,80,136,.08);
}
.ask-post-btn {
  background: var(--clr-primary,#005088);
  color: #fff;
  border: none;
  border-radius: var(--radius-md,.5rem);
  padding: .65rem 1.1rem;
  font-size: .85rem;
  font-weight: 700;
  cursor: pointer;
  display: flex; align-items: center; gap: .35rem;
  transition: background .2s, transform .15s;
  white-space: nowrap;
  height: 44px;
  font-family: var(--font-main,'Urbanist',sans-serif);
}
.ask-post-btn:hover { background: var(--clr-primary-dark,#00365c); transform: translateY(-1px); }
.ask-post-btn .material-symbols-outlined { font-size: 1rem; }

/* Tabs for filtering forum threads */
.forum-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid #e2e8f0;
  background: #fff;
  padding: 0 1.75rem;
}
.forum-tab {
  padding: .75rem 1rem;
  border: none; background: none;
  font-family: var(--font-main,'Urbanist',sans-serif);
  font-size: .825rem; font-weight: 700;
  color: #64748b; cursor: pointer;
  border-bottom: 2.5px solid transparent;
  transition: all .2s;
}
.forum-tab.active { color: var(--clr-primary,#005088); border-bottom-color: var(--clr-primary,#005088); }
.forum-tab:hover:not(.active) { color: var(--clr-text,#0f172a); }
.forum-tab-count {
  display: inline-flex; align-items: center; justify-content: center;
  background: #e2e8f0; color: #64748b;
  border-radius: 99px; font-size: .65rem;
  padding: .1rem .45rem; margin-left: .35rem;
}
.forum-tab.active .forum-tab-count { background: var(--clr-primary-light,#e6f0f7); color: var(--clr-primary,#005088); }

/* Thread list */
.forum-threads {
  padding: .5rem 0;
}

/* Individual thread / post */
.forum-post {
  border-bottom: 1px solid #f1f5f9;
  padding: 1.25rem 1.75rem;
  transition: background .15s;
}
.forum-post:last-child { border-bottom: none; }
.forum-post:hover { background: #fafcff; }

.post-top {
  display: flex;
  gap: .875rem;
  margin-bottom: .75rem;
}
.post-avatar {
  width: 30px; height: 30px; flex-shrink: 0;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: .75rem; font-weight: 900; color: #fff;
  margin-top: .1rem;
}
.post-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: .25rem;
}
.post-author { font-size: .875rem; font-weight: 800; color: var(--clr-primary,#005088); }
.post-time   { font-size: .7rem; color: #94a3b8; }

/* Role Badges */
.role-badge {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .15rem .5rem;
  border-radius: 99px;
  font-size: .65rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.role-badge-instructor {
  background: linear-gradient(135deg,var(--clr-secondary,#11CAA0),#0da882);
  color: #fff;
  box-shadow: 0 2px 8px rgba(17,202,160,.35);
}
.role-badge-student {
  background: var(--clr-primary-light,#e6f0f7);
  color: var(--clr-primary,#005088);
}
.role-badge .material-symbols-outlined { font-size: .75rem; }

.post-text {
  font-size: 14px;
  color: #64748B;
  line-height: 1.6;
  margin-bottom: .75rem;
  margin-left: 2.875rem; /* avatar-width + gap */
}

.post-actions {
  margin-left: 2.875rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.post-action-btn {
  background: none; border: none; cursor: pointer;
  font-size: .78rem; font-weight: 700;
  color: #64748b;
  display: flex; align-items: center; gap: .3rem;
  transition: color .15s;
  font-family: var(--font-main,'Urbanist',sans-serif);
}
.post-action-btn:hover { color: var(--clr-primary,#005088); }
.post-action-btn .material-symbols-outlined { font-size: .95rem; }
.post-action-btn.liked { color: #ef4444; }
.post-votes { font-weight: 700; }

/* Instructor reply card — highlighted */
.forum-reply {
  margin-top: .75rem;
  margin-left: 2.875rem;
  border-radius: var(--radius-md,.5rem);
  padding: 1rem 1.25rem;
  border-left: 3px solid #e2e8f0;
  background: #f8fafc;
  position: relative;
}
.forum-reply.instructor-reply {
  background: linear-gradient(135deg, rgba(17,202,160,.06), rgba(17,202,160,.02));
  border-left-color: var(--clr-secondary,#11CAA0);
  box-shadow: 0 2px 10px rgba(17,202,160,.1);
}

/* Nested replies container */
.replies-list {
  display: flex;
  flex-direction: column;
  gap: .625rem;
}

/* Expand/collapse replies */
.replies-toggle {
  background: none; border: none; cursor: pointer;
  color: var(--clr-secondary,#11CAA0); font-weight: 700; font-size: .8rem;
  display: flex; align-items: center; gap: .3rem;
  margin: .5rem 0 .5rem 2.875rem;
  padding: .35rem .6rem;
  border-radius: var(--radius-sm,.25rem);
  transition: background .15s;
  font-family: var(--font-main,'Urbanist',sans-serif);
}
.replies-toggle:hover { background: rgba(17,202,160,.08); }
.replies-toggle .material-symbols-outlined { font-size: 1rem; }

/* "Answered" marker on thread */
.answered-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: 99px;
  font-size: .68rem;
  font-weight: 800;
  padding: .2rem .65rem;
}
.answered-badge .material-symbols-outlined { font-size: .85rem; }

/* Tag chips on posts */
.post-tags { display: flex; gap: .4rem; flex-wrap: wrap; margin-left: 2.875rem; margin-bottom: .6rem; }
.post-tag {
  background: var(--clr-primary-light,#e6f0f7);
  color: var(--clr-primary,#005088);
  border-radius: 99px;
  font-size: .65rem; font-weight: 700;
  padding: .15rem .6rem;
}

/* Reply input row (inline) */
.reply-input-row {
  display: none;
  margin-top: .75rem;
  margin-left: 2.875rem;
  gap: .5rem;
  align-items: center;
}
.reply-input-row.open { display: flex; }
.reply-input {
  flex: 1; padding: .55rem .875rem;
  border: 1.5px solid #e2e8f0; border-radius: 99px;
  font-size: .825rem; outline: none;
  font-family: var(--font-main,'Urbanist',sans-serif);
  transition: border-color .2s;
}
.reply-input:focus { border-color: var(--clr-primary,#005088); }
.reply-send {
  width: 34px; height: 34px;
  background: var(--clr-primary,#005088);
  color: #fff; border: none; border-radius: 50%;
  display: grid; place-items: center; cursor: pointer;
  transition: background .15s;
  flex-shrink: 0;
}
.reply-send:hover { background: #00365c; }
.reply-send .material-symbols-outlined { font-size: .95rem; }

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
  .badges-grid           { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .podium-strip          { gap: .5rem; }
  .forum-post            { padding: 1rem 1.1rem; }
  .post-text, .post-actions, .post-tags, .replies-toggle, .reply-input-row, .forum-reply { margin-left: 0; }
  .forum-wrapper         { padding: 0 1rem 2rem; }
}

@media (max-width: 480px) {
  .badges-grid           { grid-template-columns: repeat(2, 1fr); }
  .xp-card               { flex-direction: column; text-align: center; }
  .xp-stats              { justify-content: center; }
}