/* ═══ Transitions & Animations ═══ */

/* Smooth view entry */
@keyframes view-enter {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}
.view.active { animation: view-enter 0.35s cubic-bezier(0.22, 1, 0.36, 1) both; }

/* Staggered card entry */
@keyframes card-enter {
    from { opacity: 0; transform: translateY(16px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
.metric-card, .card, .chart-card, .a-stat-card {
    animation: card-enter 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.metric-card:nth-child(1) { animation-delay: 0.05s; }
.metric-card:nth-child(2) { animation-delay: 0.1s; }
.metric-card:nth-child(3) { animation-delay: 0.15s; }
.metric-card:nth-child(4) { animation-delay: 0.2s; }
.metric-card:nth-child(5) { animation-delay: 0.25s; }

/* Card hover lift */
.metric-card, .card, .chart-card, .a-stat-card, .settings-card {
    transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1),
                border-color 0.25s ease,
                opacity 0.2s ease;
}
.metric-card:hover, .card:hover, .chart-card:hover, .a-stat-card:hover, .settings-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
}

/* Sidebar nav hover */
.nav-item {
    transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease !important;
}
.nav-item:hover {
    padding-left: 1.25rem;
    color: var(--text-primary);
}

/* Button interactions */
.btn-primary, .btn-secondary, .btn-secondary-outline, .btn-outline {
    transition: transform 0.15s cubic-bezier(0.22, 1, 0.36, 1),
                opacity 0.15s ease,
                border-color 0.2s ease,
                border-bottom-width 0.15s ease,
                color 0.2s ease !important;
}
.btn-primary:hover, .btn-secondary:hover {
    opacity: 0.85;
}
.btn-primary:active, .btn-secondary:active {
    transform: scale(0.97);
    transition-duration: 0.08s;
}

/* Filter group focus glow */
.filter-group {
    transition: border-color 0.2s ease;
}
.filter-group:focus-within {
    border-color: var(--primary);
}

/* Table row hover */
tr {
    transition: background 0.15s ease;
}
tr:hover {
    background: var(--bg-card-hover);
}

/* Sidebar logo pulse on hover */
.sidebar-logo {
    transition: opacity 0.2s ease;
}
.sidebar-logo:hover {
    opacity: 0.8;
}

/* Smooth color transitions for dynamic values */
.metric-value, .a-stat-value {
    transition: color 0.3s ease;
}

/* Spinner rotation */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.spin { animation: spin 1s linear infinite; }

/* Fade in utility */
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.fade-in { animation: fade-in 0.3s ease both; }

/* Reduced motion respect */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}