/* ===========================================
   INSIGHTS CATALOG
   Compact Card Grid with Horizontal Filters
   Matches Accelerators page design pattern
   =========================================== */

/* Search and Filter Section - Full Bleed */
.insights-filter-section {
    padding: var(--gms-space-8) 0;
    background: var(--gms-bg-secondary);
    border-bottom: 1px solid var(--gms-neutral-200);
}

.insights-filter-section__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--gms-space-4);
}

/* Search Bar */
.insights-search {
    position: relative;
    max-width: 100%;
    margin-bottom: var(--gms-space-4);
}

.insights-search__input {
    width: 100%;
    padding: var(--gms-space-3) var(--gms-space-4);
    padding-left: 48px;
    border: 2px solid var(--gms-neutral-200);
    border-radius: var(--gms-radius-lg);
    font-size: var(--gms-body-md);
    font-family: var(--gms-font-sans);
    background: var(--gms-bg-secondary);
    transition: all 0.2s ease;
    min-height: var(--gms-touch-target-min);
}

.insights-search__input:focus {
    outline: none;
    border-color: var(--gms-bright-blue);
    box-shadow: 0 0 0 3px rgba(0, 170, 231, 0.15);
}

.insights-search__input::placeholder {
    color: var(--gms-neutral-400);
}

.insights-search__icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gms-neutral-400);
    pointer-events: none;
}

.insights-search__count {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--gms-body-sm);
    color: var(--gms-text-secondary);
}

/* Filter Controls Row */
.insights-filter-controls {
    display: flex;
    align-items: center;
    gap: var(--gms-space-4);
    flex-wrap: wrap;
}

.insights-filter-controls__categories {
    display: flex;
    gap: var(--gms-space-2);
    flex-wrap: wrap;
}

.insights-filter-controls__dropdowns {
    display: flex;
    gap: var(--gms-space-3);
    margin-left: auto;
}

/* Category Filter Chips */
.category-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 100px;
    border: 2px solid var(--gms-neutral-200);
    background: transparent;
    font-size: var(--gms-body-sm);
    font-weight: var(--gms-font-medium);
    font-family: var(--gms-font-sans);
    color: var(--gms-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: var(--gms-touch-target-min);
}

.category-chip:hover {
    border-color: var(--gms-bright-blue);
    color: var(--gms-bright-blue);
}

.category-chip--active {
    border-color: var(--gms-bright-blue);
    background: var(--gms-bright-blue);
    color: white;
}

/* Category-specific colors when active - unified blue */
.category-chip--strategy.category-chip--active,
.category-chip--implementation.category-chip--active,
.category-chip--case-studies.category-chip--active {
    background: var(--gms-bright-blue);
    border-color: var(--gms-bright-blue);
}

/* Category dot indicator - unified blue */
.category-chip__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gms-bright-blue);
}

.category-chip--active .category-chip__dot {
    background: white;
}

/* Tags Dropdown */
.tags-dropdown {
    position: relative;
}

.tags-dropdown__trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--gms-bg-secondary);
    border: 2px solid var(--gms-neutral-200);
    border-radius: var(--gms-radius-md);
    font-size: var(--gms-body-sm);
    font-weight: var(--gms-font-medium);
    font-family: var(--gms-font-sans);
    color: var(--gms-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: var(--gms-touch-target-min);
}

.tags-dropdown__trigger:hover {
    border-color: var(--gms-bright-blue);
}

.tags-dropdown__trigger--active {
    border-color: var(--gms-bright-blue);
    color: var(--gms-bright-blue);
}

.tags-dropdown__trigger svg {
    transition: transform 0.2s ease;
}

.tags-dropdown--open .tags-dropdown__trigger svg {
    transform: rotate(180deg);
}

.tags-dropdown__menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    background: var(--gms-bg-secondary);
    border: 1px solid var(--gms-neutral-200);
    border-radius: var(--gms-radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    max-height: 320px;
    overflow-y: auto;
}

.tags-dropdown--open .tags-dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.tags-dropdown__option {
    display: flex;
    align-items: center;
    gap: var(--gms-space-3);
    padding: var(--gms-space-2) var(--gms-space-4);
    cursor: pointer;
    transition: background 0.15s ease;
    min-height: var(--gms-touch-target-min);
}

.tags-dropdown__option:hover {
    background: var(--gms-bg-primary);
}

.tags-dropdown__option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--gms-bright-blue);
    cursor: pointer;
    flex-shrink: 0;
}

.tags-dropdown__option label {
    font-size: var(--gms-body-sm);
    cursor: pointer;
    flex: 1;
}

/* Active Filters Bar */
.insights-active-filters {
    display: flex;
    align-items: center;
    gap: var(--gms-space-2);
    flex-wrap: wrap;
    padding: var(--gms-space-3) var(--gms-space-4);
    background: var(--gms-bg-primary);
    border-radius: var(--gms-radius-md);
    margin-top: var(--gms-space-4);
}

.insights-active-filters:empty {
    display: none;
}

.insights-active-filters__label {
    font-size: var(--gms-body-sm);
    color: var(--gms-text-secondary);
    margin-right: var(--gms-space-2);
}

.insights-filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--gms-bright-blue);
    color: white;
    font-size: 13px;
    font-weight: var(--gms-font-medium);
    border-radius: 100px;
}

.insights-filter-tag__remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    padding: 0;
    transition: background 0.15s ease;
}

.insights-filter-tag__remove:hover {
    background: rgba(255, 255, 255, 0.3);
}

.insights-active-filters__clear {
    margin-left: auto;
    font-size: var(--gms-body-sm);
    color: var(--gms-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: underline;
    font-family: var(--gms-font-sans);
}

.insights-active-filters__clear:hover {
    color: var(--gms-text-primary);
}

/* Active Filter Tags (JS-generated) */
.insights-active-filters--visible {
    display: flex;
}

.active-filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--gms-bright-blue);
    color: white;
    font-size: 13px;
    font-weight: var(--gms-font-medium);
    font-family: var(--gms-font-sans);
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.active-filter-tag:hover {
    background: var(--gms-accent-600);
}

.active-filter-tag svg {
    opacity: 0.8;
}

.active-filter-tag:hover svg {
    opacity: 1;
}

.active-filter-clear {
    margin-left: auto;
    font-size: var(--gms-body-sm);
    color: var(--gms-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: underline;
    font-family: var(--gms-font-sans);
    padding: 6px 12px;
}

.active-filter-clear:hover {
    color: var(--gms-text-primary);
}

/* Tags Dropdown Items (JS-generated) */
.tags-dropdown__item {
    display: flex;
    align-items: center;
    gap: var(--gms-space-3);
    padding: var(--gms-space-3) var(--gms-space-4);
    cursor: pointer;
    transition: background 0.15s ease;
    min-height: var(--gms-touch-target-min);
}

.tags-dropdown__item:hover {
    background: var(--gms-bg-primary);
}

.tags-dropdown__item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--gms-bright-blue);
    cursor: pointer;
    flex-shrink: 0;
}

.tags-dropdown__checkbox {
    display: none; /* Hidden, using native checkbox */
}

.tags-dropdown__label {
    font-size: var(--gms-body-sm);
    color: var(--gms-text-primary);
}

/* Articles Grid Section - Full Bleed */
.insights-grid-section {
    padding: var(--gms-space-10) 0;
    background: var(--gms-bg-primary);
    min-height: 400px;
}

.insights-grid-section__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--gms-space-4);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gms-space-6);
}

/* Article Card - Compact Design (matches Accelerator cards) */
.article-card {
    background: var(--gms-bg-secondary);
    border: 2px solid var(--gms-neutral-200);
    border-radius: var(--gms-radius-xl);
    padding: var(--gms-space-6);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
}

.article-card:hover {
    border-color: var(--gms-bright-blue);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    transform: translateY(-4px);
}

.article-card:focus {
    outline: 2px solid var(--gms-bright-blue);
    outline-offset: 2px;
}

/* Color accent bar at top */
.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 24px;
    right: 24px;
    height: 3px;
    border-radius: 0 0 3px 3px;
    background: var(--gms-bright-blue);
}

.article-card__body {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.article-card__category {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: var(--gms-font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: var(--gms-space-3);
    width: fit-content;
}

.article-card__category--strategy,
.article-card__category--implementation,
.article-card__category--case-studies {
    background: rgba(0, 170, 231, 0.12);
    color: var(--gms-accent-900);
}

.article-card__title {
    font-size: var(--gms-body-lg);
    font-weight: var(--gms-font-semibold);
    color: var(--gms-text-primary);
    margin: 0 0 var(--gms-space-2) 0;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card__excerpt {
    font-size: var(--gms-body-sm);
    color: var(--gms-text-secondary);
    line-height: 1.6;
    margin: 0 0 var(--gms-space-4) 0;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card__meta {
    display: flex;
    align-items: center;
    gap: var(--gms-space-4);
    padding-top: var(--gms-space-3);
    border-top: 1px solid var(--gms-neutral-200);
    font-size: 12px;
    color: var(--gms-text-secondary);
}

.article-card__meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.article-card__date {
    font-size: 12px;
    color: var(--gms-text-secondary);
}

.article-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--gms-space-3);
    border-top: 1px solid var(--gms-neutral-200);
    margin-top: auto;
}

.article-card__read-time {
    font-size: 12px;
    color: var(--gms-text-secondary);
}

.article-card__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--gms-body-sm);
    font-weight: var(--gms-font-semibold);
    color: var(--gms-bright-blue);
    text-decoration: none;
    transition: all 0.2s ease;
}

.article-card__link:hover {
    color: var(--gms-accent-600);
}

.article-card__link svg {
    transition: transform 0.2s ease;
}

.article-card__link:hover svg {
    transform: translateX(4px);
}

/* Card visibility animation */
.article-card {
    opacity: 0;
    transform: translateY(16px);
}

.article-card--visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

/* Empty State */
.insights-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--gms-space-16);
}

.insights-empty__icon {
    font-size: 64px;
    margin-bottom: var(--gms-space-4);
    opacity: 0.4;
}

.insights-empty__title {
    font-size: var(--gms-heading-4);
    font-weight: var(--gms-font-semibold);
    margin: 0 0 var(--gms-space-2) 0;
}

.insights-empty__message {
    color: var(--gms-text-secondary);
    margin: 0 0 var(--gms-space-6) 0;
}

.insights-empty__btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    background: var(--gms-bright-blue);
    color: white;
    border: none;
    border-radius: var(--gms-radius-md);
    font-size: var(--gms-body-sm);
    font-weight: var(--gms-font-semibold);
    font-family: var(--gms-font-sans);
    cursor: pointer;
    transition: all 0.2s ease;
}

.insights-empty__btn:hover {
    background: var(--gms-accent-600);
    transform: translateY(-2px);
}

/* Load More Button */
.insights-load-more {
    text-align: center;
    margin-top: var(--gms-space-10);
}

.insights-load-more__btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    background: transparent;
    color: var(--gms-bright-blue);
    border: 2px solid var(--gms-bright-blue);
    border-radius: var(--gms-radius-md);
    font-size: var(--gms-body-md);
    font-weight: var(--gms-font-semibold);
    font-family: var(--gms-font-sans);
    cursor: pointer;
    transition: all 0.2s ease;
}

.insights-load-more__btn:hover {
    background: var(--gms-bright-blue);
    color: white;
}

.insights-load-more__btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===========================================
   RESPONSIVE STYLES
   =========================================== */

@media (max-width: 1024px) {
    .insights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .insights-grid {
        grid-template-columns: 1fr;
    }

    .insights-filter-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .insights-filter-controls__categories {
        justify-content: center;
    }

    .insights-filter-controls__dropdowns {
        margin-left: 0;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .insights-filter-controls__categories {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--gms-space-2);
        width: 100%;
    }

    .category-chip {
        justify-content: center;
        width: 100%;
    }

    .insights-filter-controls__dropdowns {
        width: 100%;
    }

    .tags-dropdown {
        width: 100%;
    }

    .tags-dropdown__trigger {
        width: 100%;
        justify-content: space-between;
    }

    .tags-dropdown__menu {
        left: 0;
        right: 0;
        min-width: auto;
    }

    .article-card {
        padding: var(--gms-space-4);
    }
}

/* Print styles */
@media print {
    .insights-filter-section {
        display: none;
    }
}