/* ============================================================
   Dropdown, Tooltip, Avatar, Skeleton, Progress
   Yaz Design System v1.0
   ============================================================ */

/* ── Dropdown ── */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  inset-inline-end: 0;
  min-width: 200px;
  background: var(--color-bg-elevated);
  border: var(--border-width-thin) solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  padding: var(--space-1_5);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all var(--duration-fast) var(--ease-out);
}

.dropdown.open .dropdown-menu,
.dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--duration-fast);
  text-decoration: none;
}

.dropdown-item:hover {
  background: var(--color-bg-tertiary);
  text-decoration: none;
}

.dropdown-item.danger {
  color: var(--color-error);
}

.dropdown-divider {
  height: 1px;
  background: var(--color-border-primary);
  margin: var(--space-1_5) 0;
}

/* ── Tooltip ── */
.tooltip {
  position: relative;
  display: inline-flex;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-1_5) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--neutral-0);
  background: var(--neutral-800);
  border-radius: var(--radius-md);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-fast);
  z-index: var(--z-tooltip);
}

.tooltip:hover::after {
  opacity: 1;
}

/* ── Avatar ── */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--size-avatar-md);
  height: var(--size-avatar-md);
  border-radius: 50%;
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  overflow: hidden;
  flex-shrink: 0;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-sm { width: var(--size-avatar-sm); height: var(--size-avatar-sm); font-size: var(--text-xs); }
.avatar-lg { width: var(--size-avatar-lg); height: var(--size-avatar-lg); font-size: var(--text-base); }

.avatar-group {
  display: flex;
}

.avatar-group .avatar {
  border: 2px solid var(--color-bg-secondary);
  margin-inline-start: -8px;
}

.avatar-group .avatar:first-child {
  margin-inline-start: 0;
}

/* ── Skeleton Loading ── */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-tertiary) 25%,
    var(--color-bg-secondary) 50%,
    var(--color-bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--space-2);
}

.skeleton-text:last-child {
  width: 60%;
}

.skeleton-heading {
  height: 20px;
  width: 40%;
  margin-bottom: var(--space-4);
}

.skeleton-avatar {
  width: var(--size-avatar-md);
  height: var(--size-avatar-md);
  border-radius: 50%;
}

.skeleton-card {
  height: 160px;
  border-radius: var(--radius-xl);
}

.skeleton-button {
  height: var(--size-button-md);
  width: 120px;
  border-radius: var(--radius-lg);
}

/* ── Progress Bar ── */
.progress {
  width: 100%;
  height: 8px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-out);
}

.progress-sm { height: 4px; }
.progress-lg { height: 12px; }

.progress-success .progress-bar { background: var(--color-success); }
.progress-warning .progress-bar { background: var(--color-warning); }
.progress-error .progress-bar { background: var(--color-error); }

/* ── Spinner ── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-primary);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner-sm { width: 14px; height: 14px; border-width: 1.5px; }
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Divider ── */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border-primary);
}