/* ═══════════════════════════════════════════════
   Formulogic – Component Styles
   Cards, badges, modals, stat cards, toasts
   Laboratory / Scientific Theme
   ═══════════════════════════════════════════════ */

/* ── Cards ────────────────────────────── */
.nex-card {
    background: var(--fl-surface);
    border: 1px solid var(--fl-border);
    border-radius: var(--fl-radius);
    transition: transform var(--fl-transition), box-shadow var(--fl-transition), border-color var(--fl-transition);
    position: relative;
    overflow: hidden;
}

/* Subtle lab-grid overlay on cards */
.nex-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--fl-grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--fl-grid-color) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    opacity: .4;
    border-radius: inherit;
}

.nex-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 24px var(--fl-accent-glow), var(--fl-shadow);
    border-color: var(--fl-accent-subtle);
}

.nex-card .card-body { padding: 1.5rem; position: relative; z-index: 1; }

/* ── Stat Cards (Dashboard) ───────────── */
.stat-card {
    border: 1px solid var(--fl-border);
    border-radius: var(--fl-radius);
    overflow: hidden;
    position: relative;
}

.stat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(255,255,255,.06) 0%, transparent 60%),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 19px,
            var(--fl-grid-color) 19px,
            var(--fl-grid-color) 20px
        );
    pointer-events: none;
    opacity: .5;
}

.stat-card .card-body { position: relative; z-index: 1; }

.stat-card .stat-icon {
    font-size: 2rem;
    color: rgba(255, 255, 255, .3);
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    font-family: 'JetBrains Mono', monospace;
}

.stat-card .stat-label {
    font-size: .8rem;
    color: rgba(255, 255, 255, .7);
    text-transform: uppercase;
    letter-spacing: .8px;
    font-weight: 500;
}

/* ── Status Badges ────────────────────── */
.badge-status {
    padding: .35em .65em;
    border-radius: 6px;
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .3px;
}

.badge-draft {
    background: rgba(148, 163, 184, .15);
    color: var(--fl-muted);
    border: 1px solid rgba(148, 163, 184, .2);
}

.badge-pending {
    background: rgba(251, 191, 36, .15);
    color: var(--fl-warning);
    border: 1px solid rgba(251, 191, 36, .25);
    animation: glowPulse 2.5s ease-in-out infinite;
    --fl-accent-glow: rgba(251, 191, 36, .15);
    --fl-glow-color: rgba(251, 191, 36, .35);
}

.badge-approved {
    background: rgba(52, 211, 153, .15);
    color: var(--fl-success);
    border: 1px solid rgba(52, 211, 153, .25);
}

.badge-rejected {
    background: rgba(248, 113, 113, .15);
    color: var(--fl-danger);
    border: 1px solid rgba(248, 113, 113, .25);
}

/* ── Version Badge ────────────────────── */
.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: .75rem;
    font-weight: 600;
    background: var(--fl-accent-subtle);
    color: var(--fl-accent);
    border: 1px solid var(--fl-border);
    font-family: 'JetBrains Mono', monospace;
}

/* ── Timeline ─────────────────────────── */
.nex-timeline {
    position: relative;
    padding-left: 24px;
}

.nex-timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--fl-accent), var(--fl-border));
}

.nex-timeline-item {
    position: relative;
    padding-bottom: 1.5rem;
}

.nex-timeline-item::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--fl-accent);
    border: 2px solid var(--fl-bg);
    box-shadow: 0 0 8px var(--fl-accent-glow);
}

/* ── Toast / Auto-save Indicator ──────── */
.nex-toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 10px 20px;
    background: var(--fl-success);
    color: #fff;
    border-radius: var(--fl-radius-sm);
    font-size: .85rem;
    font-weight: 500;
    z-index: 9999;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity .3s, transform .3s;
    pointer-events: none;
    box-shadow: 0 4px 16px rgba(16, 185, 129, .3);
}

.nex-toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* ── Empty State ──────────────────────── */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--fl-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: .5;
    color: var(--fl-accent);
}

/* ── Quick Action Cards ───────────────── */
.quick-action {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem 1rem;
    border-radius: var(--fl-radius-sm);
    background: var(--fl-surface);
    border: 1px solid var(--fl-border);
    transition: all var(--fl-transition);
    color: var(--fl-text);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.quick-action::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--fl-accent);
    opacity: 0;
    transition: opacity var(--fl-transition);
}

.quick-action:hover {
    background: var(--fl-accent-subtle);
    border-color: var(--fl-accent);
    color: var(--fl-accent);
    transform: translateX(4px);
    box-shadow: 0 0 16px var(--fl-accent-glow);
}

.quick-action:hover::before {
    opacity: 1;
}

/* ── Dropdown Menus ────────────────────── */
.dropdown-menu {
    background: var(--fl-surface);
    border: 1px solid var(--fl-border);
    border-radius: var(--fl-radius-sm);
    box-shadow: var(--fl-shadow);
    backdrop-filter: none;
}
.dropdown-menu .dropdown-item {
    color: var(--fl-text);
}
.dropdown-menu .dropdown-item:hover,
.dropdown-menu .dropdown-item:focus {
    background: var(--fl-surface-hover);
    color: var(--fl-text);
}

/* ── Loading Skeleton ─────────────────── */
@keyframes skeletonShimmer {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}
.skeleton {
    background: linear-gradient(90deg, var(--fl-border) 25%, rgba(99,102,241,.08) 50%, var(--fl-border) 75%);
    background-size: 200px 100%;
    animation: skeletonShimmer 1.5s ease-in-out infinite;
    border-radius: 6px;
    display: inline-block;
}
.skeleton-text { height: 14px; width: 80%; margin-bottom: 8px; }
.skeleton-text.short { width: 40%; }
.skeleton-text.medium { width: 60%; }
.skeleton-title { height: 20px; width: 50%; margin-bottom: 12px; }
.skeleton-circle { border-radius: 50%; }
.skeleton-card {
    background: var(--fl-surface);
    border: 1px solid var(--fl-border);
    border-radius: var(--fl-radius);
    padding: 1.5rem;
}
.skeleton-table-row {
    display: flex; gap: 12px; padding: 10px 0;
    border-bottom: 1px solid var(--fl-border);
}
.skeleton-table-row .skeleton { flex: 1; height: 16px; }
.skeleton-badge { height: 22px; width: 64px; border-radius: 12px; }