/* Performance optimizations for Housio application */

/* Hardware acceleration for frequently animated elements */
.modal-overlay,
.modal-content,
.budget-item,
.btn,
.overview-card,
.tip-card {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Optimize modal animations */
.modal-overlay {
    animation: fadeIn 0.2s ease-out;
    will-change: opacity;
}

.modal-content {
    animation: slideInUp 0.2s ease-out;
    will-change: transform, opacity;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInUp {
    from { 
        opacity: 0; 
        transform: translate3d(0, 20px, 0); 
    }
    to { 
        opacity: 1; 
        transform: translate3d(0, 0, 0); 
    }
}

/* Reduce paint complexity */
.budget-item {
    contain: layout style;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.budget-item:hover {
    transform: translate3d(0, -1px, 0);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Optimize button interactions */
.btn {
    transition: background-color 0.15s ease, transform 0.1s ease;
    border-radius: 6px;
}

.btn:hover {
    transform: translate3d(0, -1px, 0);
}

.btn:active {
    transform: translate3d(0, 0, 0);
}

/* Optimize form controls */
.form-control {
    transition: border-color 0.15s ease;
    border-radius: 6px;
}

.form-control:focus {
    box-shadow: 0 0 0 2px rgba(255, 107, 53, 0.2);
    border-color: var(--primary-orange);
}

/* Optimize scrolling performance */
.budget-items,
.history-list {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    contain: layout style paint;
    scroll-behavior: smooth;
}

/* Container queries for better responsive performance */
.budget-lists {
    container-type: inline-size;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@container (max-width: 768px) {
    .budget-lists {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Optimize loading states */
.loading-spinner {
    animation: spin 1s linear infinite;
    will-change: transform;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Reduce reflows and repaints */
.overview-card,
.tip-card {
    min-height: 120px; /* Prevent layout shift */
    contain: layout style;
}

/* Optimize hover effects */
.item-actions button {
    transition: background-color 0.1s ease;
    border-radius: 4px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Optimize critical rendering path */
.budget-header,
.month-selector,
.budget-overview {
    contain: layout style;
}

/* Improve text rendering */
body {
    text-rendering: optimizeSpeed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Virtual scrolling hints */
.budget-items {
    content-visibility: auto;
    contain-intrinsic-size: 0 400px;
}

/* Optimize shadows for better performance */
.card,
.modal-content,
.overview-card {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Prevent unnecessary repaints */
.recurring-item {
    border-left: 3px solid var(--primary-orange);
    padding-left: calc(1rem - 3px);
}

/* Optimize modal backdrop */
.modal-overlay {
    backdrop-filter: none; /* Remove expensive filter */
    background: rgba(0, 0, 0, 0.5);
}

/* Optimize table rendering */
.table {
    table-layout: fixed; /* Faster table rendering */
}

/* GPU acceleration for interactive elements */
.btn-edit,
.btn-remove,
.btn-remove-series {
    transform: translateZ(0);
    transition: background-color 0.1s ease;
}

/* Optimize input interactions */
input[type="number"],
input[type="date"],
input[type="text"],
select {
    transition: border-color 0.15s ease;
}

/* Prevent layout thrashing */
.modal-footer .btn {
    min-width: 100px;
    white-space: nowrap;
}

/* Optimize grid layouts */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    contain: layout;
}

/* Improve scrollbar performance */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

/* Critical CSS optimizations */
.budget-item {
    isolation: isolate; /* Create new stacking context */
}

/* Optimize paint complexity */
.overview-icon,
.tip-icon {
    font-size: 1.5rem; /* Reduce from 2rem for better rendering */
}

/* Composite layer optimization */
.modal-content {
    isolation: isolate;
    z-index: 1001;
}

/* Reduce complexity of gradients */
.btn-primary {
    background: var(--primary-orange);
    /* Remove gradient for better performance */
}

.btn-primary:hover {
    background: var(--warm-yellow);
}

/* Optimize recurring indicators */
.recurring-icon {
    display: inline-block;
    margin-right: 0.25rem;
    opacity: 0.8;
}

/* Performance hints for browsers */
.budget-section {
    contain: layout style paint;
}