.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(105px, 1fr));
    gap: 12px;
}

/* Base Expense Category Item */
.expense-category-item {
    aspect-ratio: 1 / 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 10px !important;
    text-align: center;
    word-break: break-word;
    hyphens: auto;
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    transition: transform .1s;
}

.expense-category-item:active {
    transform: scale(0.97);
}

.expense-category-item h4 {
    margin: 0 0 4px;
    font-size: 16px;
}

.expense-category-item p {
    margin: 0 0 4px;
    font-size: 12px;
    opacity: .9;
}

.expense-category-item .amount {
    font-size: 22px;
    font-weight: 600;
    margin-top: 8px;
}

/* Specific Screen Grids */
#add-expense-category-screen .category-grid,
#manage-categories-screen .category-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
}

#standard-category-grid,
#preset-category-grid,
#recurring-category-grid,
#manage-categories-grid,
#manage-favorites-grid,
#manage-recurring-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 12px;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

#standard-category-grid::-webkit-scrollbar,
#preset-category-grid::-webkit-scrollbar,
#recurring-category-grid::-webkit-scrollbar,
#manage-categories-grid::-webkit-scrollbar,
#manage-favorites-grid::-webkit-scrollbar,
#manage-recurring-grid::-webkit-scrollbar {
    display: none;
}

#standard-category-grid .category-item,
#preset-category-grid .category-item,
#recurring-category-grid .category-item,
#manage-categories-grid .category-item,
#manage-favorites-grid .category-item,
#manage-recurring-grid .category-item {
    flex: 0 0 110px;
    scroll-snap-align: start;
}

#add-expense-category-screen .category-item,
#manage-categories-screen .category-item {
    min-height: 70px;
    aspect-ratio: auto;
}

/* Category Item (Management) */
.category-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 10px 5px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    transition: transform 0.1s, box-shadow .2s;
    position: relative;
    box-shadow: 0 2px 6px #0000000f;
    font-size: 13px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 70px;
}

.category-item:active {
    transform: scale(0.96);
}

.category-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px #0000001a;
}

.category-item .delete-icon {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background-color: var(--red);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    border: 2px solid #fff;
}

.category-item .category-name {
    cursor: pointer;
    display: block;
    padding: 5px;
    transition: background-color .2s;
    border-radius: 5px;
}

.category-item .budget-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    background-color: var(--green);
    border-radius: 0 0 8px 8px;
}

/* Monthly History Specifics (Merged) */
#monthly-history-grid .expense-category-item {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 85px;
    padding: 10px 5px;
    cursor: pointer;
    transition: transform .1s;
}

#monthly-history-grid .expense-category-item:active {
    transform: scale(0.97);
}

#monthly-history-grid .expense-category-item h4 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
}

.week-range-label {
    font-size: 12px;
    opacity: .6;
    margin: 2px 0 6px;
    color: var(--text-color);
    white-space: nowrap;
}

#monthly-history-grid .expense-category-item .amount {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(90deg, #5A7BED, #C764E3);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    position: relative;
    z-index: 3;
}

/* Summary Items */
.category-summary-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.2s, box-shadow .2s;
    box-shadow: 0 1px 2px #0000000d;
}

.category-summary-item:active {
    background-color: var(--input-bg);
    box-shadow: none;
    transform: scale(0.99);
}

.category-summary-item .details {
    font-size: 16px;
    font-weight: 500;
}

/* Tab Carousels */
#add-tabs-carousel,
#manage-tabs-carousel {
    display: flex;
    gap: 0;
    overflow-x: auto;
    padding: 0 0 20px;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

#add-tabs-carousel::-webkit-scrollbar,
#manage-tabs-carousel::-webkit-scrollbar {
    display: none;
}

#add-tabs-carousel .tab-content-add,
#manage-tabs-carousel .tab-content {
    min-width: 100%;
    width: 100%;
    scroll-snap-align: start;
}

#add-tab-cats .category-grid,
#add-tab-favs .category-grid,
#add-tab-recs .category-grid,
#tab-cats .category-grid,
#tab-favs .category-grid,
#tab-recs .category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 12px;
    overflow: visible;
}

/* Import/Export Section */
.import-export-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.import-export-section h3 {
    text-align: center;
    color: var(--secondary-text-color);
    margin-bottom: 15px;
}

.import-export-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

#import-file-input {
    display: none;
}

/* Category Grid Spacing & Layout */
#history-selector-group,
#view-expenses-grid,
#no-expenses-message,
#category-selection-grid,
#manage-categories-screen #existing-categories-block,
#data-screen .import-export-section,
#edit-category-screen .card:first-of-type,
#add-expense-amount-screen .card:first-of-type,
#expense-list,
#weekly-detail-list,
#weekly-category-detail-list,
#edit-expense-screen .card:first-of-type {
    margin-top: 20px;
}

/* Budget Progress Bar */
.budget-progress-bar-container {
    width: 100%;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    margin-top: 10px;
    overflow: hidden;
}

.budget-progress-bar-fill {
    height: 100%;
    width: 0;
    background-color: var(--green);
    border-radius: 3px;
    transition: width .5s ease-out, background-color .5s ease;
}

.budget-progress-bar-fill.warning {
    background-color: var(--yellow);
}

.budget-progress-bar-fill.danger {
    background-color: var(--red);
}