/* ============================================
   EDUVERSE — ADDITIONAL COMPONENTS
   ============================================ */

/* === NOTIFICATION BADGE === */
.notif-badge {
  position: relative;
  display: inline-flex;
}

.notif-badge::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 8px;
  height: 8px;
  background: var(--danger);
  border-radius: 50%;
  border: 2px solid var(--bg-base);
  animation: pulse 2s ease infinite;
}

/* === LOADING SPINNER === */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(124,58,237,0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

.spinner-lg {
  width: 48px;
  height: 48px;
  border-width: 4px;
}

/* === EMPTY STATE === */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
  gap: var(--space-md);
}
.empty-state-icon { font-size: 3.5rem; }
.empty-state h3 { color: var(--text-primary); }
.empty-state p { max-width: 360px; }

/* === AVATAR === */
.avatar {
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: white;
  background: var(--grad-primary);
  flex-shrink: 0;
}
.avatar-sm  { width: 28px; height: 28px; font-size: 0.65rem; }
.avatar-md  { width: 40px; height: 40px; font-size: 0.875rem; }
.avatar-lg  { width: 64px; height: 64px; font-size: 1.25rem; }
.avatar-xl  { width: 96px; height: 96px; font-size: 2rem; }

/* === DIVIDER === */
.divider {
  height: 1px;
  background: var(--border);
  border: none;
  margin: var(--space-xl) 0;
}

.divider-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.divider-label::before,
.divider-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* === TOOLTIPS === */
[data-tooltip] {
  position: relative;
  cursor: pointer;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(13,13,43,0.95);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: var(--z-dropdown);
  backdrop-filter: blur(8px);
}
[data-tooltip]:hover::after { opacity: 1; }

/* === BREADCRUMBS === */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.825rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}
.breadcrumbs a { color: var(--text-secondary); }
.breadcrumbs a:hover { color: var(--primary-light); }
.breadcrumbs .sep { opacity: 0.4; }
.breadcrumbs .current { color: var(--text-primary); }

/* === CALLOUT / ALERT BOX === */
.callout {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}
.callout-icon { font-size: 1.2rem; margin-top: 1px; flex-shrink: 0; }
.callout.info    { background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.3); }
.callout.success { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); }
.callout.warning { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.3); }
.callout.danger  { background: rgba(239,68,68,0.1);  border: 1px solid rgba(239,68,68,0.3); }

/* === LEADERBOARD ROW === */
.leaderboard-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 0.75rem var(--space-md);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  margin-bottom: 0.25rem;
}
.leaderboard-row:hover { background: var(--bg-card); }
.rank { font-family: 'Outfit', sans-serif; font-weight: 800; font-size: 1rem; width: 28px; text-align: center; }
.rank-1 { color: #FFD700; }
.rank-2 { color: #C0C0C0; }
.rank-3 { color: #CD7F32; }

/* === CODE BLOCK === */
.code-block {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: var(--accent);
  overflow-x: auto;
  white-space: pre;
}

/* === FLASH MESSAGE (top of page) === */
.flash-message {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: 'Outfit', sans-serif;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
  animation: fadeInDown 0.3s ease, fadeIn 0.3s 2.7s reverse forwards;
}
.flash-message.success { background: rgba(16,185,129,0.9); color: white; }
.flash-message.error   { background: rgba(239,68,68,0.9); color: white; }
.flash-message.info    { background: rgba(124,58,237,0.9); color: white; }

/* === CARD WITH GRADIENT BORDER === */
.card-gradient-border {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: var(--grad-primary);
}
.card-gradient-border > * {
  border-radius: calc(var(--radius-lg) - 1px);
  background: var(--bg-surface);
}

/* === XP BAR THEMED === */
.xp-bar-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.xp-label { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; }

/* === ON/OFF PILL SWITCH === */
.pill-switch {
  display: flex;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 3px;
}
.pill-option {
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: 'Outfit', sans-serif;
  font-weight: 500;
  transition: all var(--transition-base);
}
.pill-option.active { background: var(--primary); color: white; box-shadow: 0 2px 8px rgba(124,58,237,0.4); }

/* === SECTION HEADER === */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}
.section-header-text .eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-light);
  margin-bottom: 0.25rem;
}

/* === SCORE BADGE === */
.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}
.score-badge.excellent { background: rgba(16,185,129,0.2); color: var(--success); }
.score-badge.good      { background: rgba(59,130,246,0.2);  color: var(--info); }
.score-badge.average   { background: rgba(245,158,11,0.2);  color: var(--warning); }
.score-badge.poor      { background: rgba(239,68,68,0.2);   color: var(--danger); }

/* === CONFETTI PARTICLE (used for celebrations) === */
.confetti-piece {
  position: fixed;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  animation: particleFloat 1.5s ease forwards;
  pointer-events: none;
  z-index: var(--z-toast);
}

/* === PAGE LOADER OVERLAY === */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.4s ease;
}
.page-loader.fade-out { opacity: 0; pointer-events: none; }
.loader-logo { font-size: 2rem; font-family: 'Outfit', sans-serif; font-weight: 800; animation: pulse 1.5s ease infinite; }

/* === RESPONSIVE UTILITIES === */
@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
  .show-mobile { display: flex !important; }
  .text-center-mobile { text-align: center !important; }
  .stack-mobile { flex-direction: column !important; }
}

@media (min-width: 769px) {
  .show-mobile { display: none !important; }
  .hide-desktop { display: none !important; }
}