.categories-page-container {
    display: block;
    grid-template-areas: none;
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    max-width: 1280px;
}

.categories-page-container .left-section {
    grid-area: auto;
    padding: 0;
}

.categories-directory-shell {
    border: 1px solid #dbe4f0;
    box-shadow: 0 8px 24px rgba(10, 36, 74, 0.08);
}

.categories-controls {
    position: sticky;
    top: 66px;
    z-index: 25;
    margin: 0 0 12px;
    padding: 10px 0 8px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
    backdrop-filter: blur(3px);
    border-bottom: 1px solid #e6edf7;
}

.categories-hub-page .category-toolbar {
    margin-bottom: 10px;
}

.alpha-jump {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 2px 0 0;
}

.alpha-jump-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 30px;
    padding: 0 8px;
    border-radius: 999px;
    border: 1px solid #d3dfef;
    background: #fff;
    color: #25486f;
    text-decoration: none;
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1;
    transition: all 0.2s ease;
}

.alpha-jump-link:hover {
    background: #eaf3ff;
    border-color: #95b5de;
}

.alpha-jump-link.is-disabled {
    opacity: 0.4;
    pointer-events: none;
}

.alpha-jump-link.is-active {
    background: #0f4a8a;
    border-color: #0f4a8a;
    color: #fff;
}

.category-letter-section {
    margin-bottom: 16px;
    scroll-margin-top: 170px;
}

.category-letter-heading {
    margin: 0 0 8px;
    padding: 8px 12px;
    border-radius: 10px;
    background: #f2f7ff;
    border: 1px solid #dde8f8;
    color: #173c66;
    font-size: 1rem;
    font-weight: 700;
}

.categories-hub-page .calculators-grid {
    margin-bottom: 0;
}

.categories-hub-page .calculator-card {
    grid-template-columns: 40px minmax(0, 1fr) auto;
}

.categories-hub-page .calculator-description {
    color: #607186;
}

.categories-hub-page .calculator-card[data-category="Finance"] .calculator-icon { background: rgba(37, 99, 235, 0.1); }
.categories-hub-page .calculator-card[data-category="Health"] .calculator-icon { background: rgba(5, 150, 105, 0.12); }
.categories-hub-page .calculator-card[data-category="Math"] .calculator-icon { background: rgba(99, 102, 241, 0.12); }
.categories-hub-page .calculator-card[data-category="Other"] .calculator-icon { background: rgba(245, 158, 11, 0.14); }
.categories-hub-page .calculator-card[data-category="Sports"] .calculator-icon { background: rgba(220, 38, 38, 0.12); }

@media (max-width: 900px) {
    .categories-controls {
        top: 58px;
    }

    .category-letter-section {
        scroll-margin-top: 164px;
    }
}

@media (max-width: 600px) {
    .categories-controls {
        padding-top: 8px;
        top: 56px;
    }

    .alpha-jump-link {
        min-width: 26px;
        height: 26px;
        font-size: 0.72rem;
        padding: 0 6px;
    }

    .category-letter-heading {
        font-size: 0.92rem;
        padding: 7px 10px;
    }

    .categories-hub-page .calculator-card {
        grid-template-columns: 34px minmax(0, 1fr);
    }
}