/* =====================================================================
   UniMate Component — Avatars v1.0
   Sizes: xs/sm/md/lg/xl, online indicator, group stack
   ===================================================================== */

/* ── Base Avatar ─────────────────────────────────────────────────────── */
.um-avatar {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--um-neutral-200), var(--um-neutral-300));
  color: var(--um-text-secondary);
  font-family: var(--um-font-display);
  font-weight: var(--um-weight-bold);
  text-transform: uppercase;
  user-select: none;
}

.um-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* ── Sizes ────────────────────────────────────────────────────────────── */
.um-avatar--xs {
  width: 24px;
  height: 24px;
  font-size: var(--um-text-2xs);
}

.um-avatar--sm {
  width: 32px;
  height: 32px;
  font-size: var(--um-text-xs);
}

.um-avatar--md {
  width: 40px;
  height: 40px;
  font-size: var(--um-text-sm);
}

.um-avatar--lg {
  width: 52px;
  height: 52px;
  font-size: var(--um-text-md);
}

.um-avatar--xl {
  width: 72px;
  height: 72px;
  font-size: var(--um-text-xl);
}

.um-avatar--2xl {
  width: 96px;
  height: 96px;
  font-size: var(--um-text-2xl);
}

/* ── Online Indicator ────────────────────────────────────────────────── */
.um-avatar__status {
  position: absolute;
  bottom: 0;
  right: 0;
  border-radius: 50%;
  border: 2px solid var(--um-surface);
  transition: background var(--um-duration-slow) var(--um-ease-default);
}

.um-avatar--xs .um-avatar__status { width: 8px;  height: 8px;  border-width: 1.5px; }
.um-avatar--sm .um-avatar__status { width: 10px; height: 10px; border-width: 2px; }
.um-avatar--md .um-avatar__status { width: 12px; height: 12px; border-width: 2px; }
.um-avatar--lg .um-avatar__status { width: 14px; height: 14px; border-width: 2.5px; }
.um-avatar--xl .um-avatar__status { width: 16px; height: 16px; border-width: 3px; }
.um-avatar--2xl .um-avatar__status { width: 18px; height: 18px; border-width: 3px; }

.um-avatar__status--online {
  background: var(--um-success);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.um-avatar__status--offline {
  background: var(--um-text-muted);
}

.um-avatar__status--busy {
  background: var(--um-danger);
}

.um-avatar__status--away {
  background: var(--um-warning);
}

/* ── Group Stack ─────────────────────────────────────────────────────── */
.um-avatar-group {
  display: flex;
  align-items: center;
}

.um-avatar-group .um-avatar {
  border: 2px solid var(--um-surface);
  margin-left: -8px;
  transition: transform var(--um-duration-fast) var(--um-ease-default);
}

.um-avatar-group .um-avatar:first-child {
  margin-left: 0;
}

.um-avatar-group .um-avatar:hover {
  transform: translateY(-2px);
  z-index: 1;
}

.um-avatar-group__overflow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--um-surface-sunken);
  border: 2px solid var(--um-surface);
  color: var(--um-text-secondary);
  font-size: var(--um-text-xs);
  font-weight: var(--um-weight-bold);
  margin-left: -8px;
}

/* ── Rounded Variants ────────────────────────────────────────────────── */
.um-avatar--rounded {
  border-radius: var(--um-radius-lg);
}

.um-avatar--rounded.um-avatar--xs { border-radius: var(--um-radius-sm); }
.um-avatar--rounded.um-avatar--sm { border-radius: var(--um-radius-md); }
.um-avatar--rounded.um-avatar--lg { border-radius: var(--um-radius-xl); }

/* ── Dark Theme ──────────────────────────────────────────────────────── */
.theme-dark .um-avatar {
  background: linear-gradient(135deg, var(--um-neutral-700), var(--um-neutral-800));
  color: var(--um-text-muted);
}

.theme-dark .um-avatar__status {
  border-color: var(--um-surface);
}

.theme-dark .um-avatar-group .um-avatar {
  border-color: var(--um-surface);
}

.theme-dark .um-avatar-group__overflow {
  background: var(--um-surface-elevated);
  border-color: var(--um-surface);
}