/* =====================================================
   CATEGORIES PAGE - FILTERED LIST LAYOUT (LIGHT THEME)
   ===================================================== */

:root {
    --cat-primary: #00d4d4;
    --cat-secondary: #5b8cff;
    --cat-text: #0f172a;
    --cat-muted: #64748b;
    --cat-panel: #ffffff;
    --cat-panel-soft: #f8fbff;
    --cat-border: rgba(91, 140, 255, 0.18);
}

.categories-section {
    max-width: 1240px;
    margin: 56px auto;
    padding: 28px 20px 36px;
}

.categories-header {
    text-align: center;
    margin-bottom: 24px;
}

.categories-title {
    margin: 0;
    color: var(--cat-text);
    font-size: clamp(2rem, 4.4vw, 3.1rem);
    line-height: 1.05;
}

.categories-description {
    margin: 12px auto 0;
    max-width: 760px;
    font-size: 15px;
    line-height: 1.65;
    color: var(--cat-muted);
}

.categories-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

.filters-panel {
    position: sticky;
    top: 88px;
    background: linear-gradient(170deg, var(--cat-panel-soft) 0%, #ffffff 100%);
    border: 1px solid var(--cat-border);
    border-radius: 16px;
    padding: 18px 14px;
}

.filters-title {
    margin: 0 0 14px;
    color: var(--cat-text);
    font-size: 1.4rem;
}

.filter-group + .filter-group {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid rgba(91, 140, 255, 0.12);
}

.filter-label {
    margin: 0 0 8px;
    color: var(--cat-muted);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.filter-option {
    width: 100%;
    text-align: left;
    border: 1px solid transparent;
    background: transparent;
    color: #1e293b;
    border-radius: 10px;
    font-size: 14px;
    padding: 8px 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-option:hover {
    background: #f1f7ff;
    border-color: rgba(91, 140, 255, 0.2);
}

.filter-option.is-active {
    background: linear-gradient(130deg, rgba(0, 212, 212, 0.12), rgba(91, 140, 255, 0.16));
    border-color: rgba(91, 140, 255, 0.36);
    color: #0b2f5f;
    font-weight: 700;
}

.results-panel {
    background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
    border: 1px solid var(--cat-border);
    border-radius: 16px;
    padding: 18px 18px 28px;
}

.results-search-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ffffff;
    border: 1px solid rgba(91, 140, 255, 0.3);
    border-radius: 12px;
    padding: 11px 14px;
    margin-bottom: 16px;
}

.results-search-wrap i {
    color: #5b8cff;
    font-size: 14px;
}

.results-search-wrap input {
    border: 0;
    outline: none;
    background: transparent;
    width: 100%;
    color: #0f172a;
    font-size: 15px;
}

.software-container {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 8px;
}

.software-card {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    text-decoration: none;
    color: inherit;
    background: linear-gradient(140deg, #f8fdff 0%, #ffffff 100%);
    border: 1px solid rgba(91, 140, 255, 0.24);
    border-radius: 12px;
    padding: 12px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.software-card:hover {
    transform: translateY(-2px);
    border-color: rgba(0, 212, 212, 0.42);
    box-shadow: 0 10px 22px rgba(91, 140, 255, 0.12);
}

.software-icon {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    border: 1px solid #dbe3ef;
    color: #64748b;
    font-size: 18px;
}

.software-icon img {
    width: calc(100% - 8px);
    height: calc(100% - 8px);
    border-radius: 10px;
    object-fit: contain;
}

.software-icon span {
    font-weight: 700;
    font-size: 13px;
}

.software-content {
    min-width: 0;
}

.software-title {
    margin: 0;
    color: #0f172a;
    font-size: 17px;
    line-height: 1.2;
}

.software-description {
    margin: 6px 0 10px;
    color: #64748b;
    font-size: 13px;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.software-meta {
    margin-top: 2px;
}

.software-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    background: rgba(91, 140, 255, 0.12);
    color: #315eb3;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.empty-state {
    color: var(--cat-muted);
    padding: 16px 4px;
    margin: 0;
}

.hidden {
    display: none !important;
}

@media (max-width: 1080px) {
    .software-container {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 860px) {
    .categories-layout {
        grid-template-columns: 1fr;
    }

    .filters-panel {
        position: static;
    }

    .filter-group {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .filter-label {
        grid-column: 1 / -1;
        margin-bottom: 2px;
    }
}

@media (max-width: 640px) {
    .categories-section {
        margin: 36px auto;
        padding: 22px 14px 28px;
    }

    .results-panel {
        padding: 14px;
    }

    .software-container {
        grid-template-columns: 1fr;
    }
}