/**
 * skeletons.css — Skeleton Loaders & Shimmer Effects
 * Uses CSS hardware-accelerated animations (transform/opacity) to avoid layout thrash.
 * No CLS (Cumulative Layout Shift) because dimensions are reserved BEFORE data loads.
 */

/* ── Base Shimmer Animation ────────────────────────────────────────────────── */
@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

@keyframes skeleton-pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ── Shared Base ────────────────────────────────────────────────────────────── */
.skeleton {
    background: linear-gradient(90deg,
            var(--bg-surface-2, #1e1e2e) 25%,
            var(--bg-surface-3, #2a2a3c) 50%,
            var(--bg-surface-2, #1e1e2e) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.6s ease-in-out infinite;
    border-radius: 6px;
    will-change: background-position;
}

/* ── Skeleton Variants ──────────────────────────────────────────────────────── */
.skeleton-line {
    height: 14px;
    margin-bottom: 10px;
    border-radius: 4px;
}

.skeleton-line.skeleton-line--sm {
    height: 10px;
    width: 40%;
}

.skeleton-line.skeleton-line--md {
    height: 14px;
    width: 70%;
}

.skeleton-line.skeleton-line--lg {
    height: 20px;
    width: 90%;
}

.skeleton-line.skeleton-line--full {
    width: 100%;
}

.skeleton-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
}

.skeleton-avatar--sm {
    width: 24px;
    height: 24px;
}

/* ── Skeleton Card ─────────────────────────────────────────────────────────── */
.skeleton-card {
    border-radius: 12px;
    padding: 18px;
    margin-bottom: 12px;
    background: var(--bg-surface-1, #18181b);
    border: 1px solid var(--border-color, #2a2a3c);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.skeleton-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}

/* ── Skeleton Table Row ────────────────────────────────────────────────────── */
.skeleton-row {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color, #2a2a3c);
}

.skeleton-row>.skeleton {
    flex: 1;
    height: 12px;
}

.skeleton-row>.skeleton:first-child {
    max-width: 120px;
}

.skeleton-row>.skeleton:nth-child(2) {
    max-width: 200px;
}

/* ── View-level Skeleton Containers ───────────────────────────────────────── */
.skeleton-board {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    padding: 16px 0;
}

.skeleton-board-col {
    background: var(--bg-surface-1);
    border-radius: 10px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ── Fade-in for loaded content ────────────────────────────────────────────── */
@keyframes contentFadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-loaded {
    animation: contentFadeIn 0.25s ease-out forwards;
}