/* ============================================================================
   LOADING / SKELETON / TOAST
   Shared loading affordances. Skeleton blocks for content-shape placeholders,
   spinner for inline use, and toast container positioning.
   ============================================================================ */

/* ── Skeleton blocks ───────────────────────────────────────────────────── */
.skeleton {
    display: block;
    background: linear-gradient(90deg,
        var(--surface-3) 0%,
        var(--surface-2) 50%,
        var(--surface-3) 100%);
    background-size: 200% 100%;
    border-radius: var(--border-radius-sm);
    animation: kf-skeleton-shimmer 1.4s ease-in-out infinite;
    color: transparent !important;
    pointer-events: none;
    user-select: none;
}

.skeleton-text  { height: 0.9em; margin: 0.4em 0; }
.skeleton-title { height: 1.5em; width: 60%; margin: 0.4em 0 0.6em; }
.skeleton-line  { height: 0.85em; margin: 0.3em 0; }
.skeleton-line--short { width: 40%; }
.skeleton-line--mid   { width: 70%; }

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-thumb {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--border-radius);
}

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

@media (prefers-reduced-motion: reduce) {
    .skeleton { animation: none; }
}

/* ── Inline spinner ────────────────────────────────────────────────────── */
.kf-spinner {
    display: inline-block;
    width: 1em;
    height: 1em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: kf-spin 0.7s linear infinite;
    vertical-align: -0.15em;
}
.kf-spinner--lg { width: 2rem; height: 2rem; border-width: 3px; }

/* ── Toast container & toasts ──────────────────────────────────────────── */
.toast-container {
    position: fixed;
    z-index: var(--z-toast);
    pointer-events: none;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 100%;
}

.toast-container--top-end    { top: 0;    right: 0; align-items: flex-end; }
.toast-container--bottom-end { bottom: 0; right: 0; align-items: flex-end; }
.toast-container--top-center { top: 0; left: 50%; transform: translateX(-50%); align-items: center; }

.toast {
    background: var(--surface-1) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--border-radius) !important;
    box-shadow: var(--shadow-lg) !important;
    pointer-events: auto;
    min-width: 280px;
    max-width: 380px;
    overflow: hidden;
    backdrop-filter: none;
}

.toast-header {
    background: var(--surface-1);
    border-bottom: 1px solid var(--border-light);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-strong);
    padding: 0.55rem 0.85rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast-body {
    padding: 0.65rem 0.85rem;
    font-size: var(--font-size-sm);
    color: var(--text-default);
    line-height: var(--line-height-normal);
}

.toast--success .toast-header { color: var(--success-dark); }
.toast--warning .toast-header { color: var(--warning-dark); }
.toast--danger  .toast-header { color: var(--danger-dark); }
.toast--info    .toast-header { color: var(--info-dark); }

.toast__indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ── Page loading bar (slim top progress) ──────────────────────────────── */
.page-loading-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--accent-color);
    z-index: var(--z-fixed);
    transition: width 0.2s ease;
    box-shadow: 0 1px 4px rgba(200, 164, 80, 0.4);
}