/*
 * expert-insights-articles.css
 * Owned stylesheet for src/Templates/expert-insights/articles.html.twig
 * (the Expert Insights articles hub/listing page).
 *
 * Migrated 2026-09 out of that template's inline <style> block and
 * style="..." attributes as part of the CSP-hardening effort (Phase 3E):
 * production CSP can only set a strict style-src-elem once no template
 * carries its own <style> block or relies on inline style attributes for
 * static presentation.
 */

:root {
    --articles-primary-color: #1e3a5f;
    --articles-secondary-color: #6a3de8;
    --articles-accent-color: #f59e0b;
    --articles-bg-light: #f7f9fc;
    --articles-bg-section: #ffffff;
    --articles-text-dark: #1a2a42;
    --articles-text-medium: #4a5568;
    --articles-text-light: #4a5568;
    --articles-border-color: #e2e8f0;
    --articles-radius: 12px;
    --articles-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.07);
    --articles-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.10), 0 4px 6px -4px rgba(0, 0, 0, 0.10);
    --articles-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.articles-page { background-color: var(--articles-bg-light); }

/* --- Hero Section --- */
.articles-hero {
    background: linear-gradient(135deg, var(--articles-primary-color), #141f2e);
    padding: 5rem 0;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.articles-hero__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

.articles-hero__title {
    font-size: clamp(2.4rem, 5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
    letter-spacing: 0.2px;
}

.articles-hero__subtitle {
    font-size: clamp(1.05rem, 2.5vw, 1.25rem);
    color: rgba(255, 255, 255, 0.86);
    max-width: 720px;
    margin-bottom: 0;
    line-height: 1.65;
}

.articles-hero__bullets {
    margin: 1.25rem 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.75rem;
    max-width: 780px;
}
.articles-hero__bullets li {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    color: rgba(255, 255, 255, 0.86);
}
.articles-hero__bullets .material-icons {
    font-size: 1.2rem;
    color: rgba(245, 158, 11, 0.95);
    margin-top: 2px;
}

.articles-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.75rem;
}

/* Better outline button contrast on dark hero */
.articles-hero .qc-btn--outline {
    border-color: rgba(255, 255, 255, 0.55);
    color: rgba(255, 255, 255, 0.92);
}
.articles-hero .qc-btn--outline:hover {
    background-color: rgba(255, 255, 255, 0.10);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.75);
}

.articles-hero__fineprint {
    margin-top: 1.25rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.70);
    max-width: 760px;
}

@media(min-width: 992px) {
    .articles-hero { padding: 6rem 0; }
    .articles-hero__inner { grid-template-columns: 2.2fr 1fr; }
    .articles-hero__icon-wrapper {
        justify-content: flex-end;
        display: flex;
        align-items: center;
    }
    .articles-hero__icon-wrapper .material-icons {
        font-size: 190px;
        color: rgba(106, 61, 232, 0.22);
        transform: rotate(-15deg);
        user-select: none;
    }
}

/* --- Quick Links --- */
.articles-quicklinks {
    padding: 3.25rem 0 0;
    background-color: var(--articles-bg-light);
}

.quicklinks-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}

.quicklink-card {
    background: #fff;
    border: 1px solid var(--articles-border-color);
    border-radius: var(--articles-radius);
    box-shadow: var(--articles-shadow);
    padding: 1.25rem 1.25rem;
    transition: var(--articles-transition);
    text-decoration: none;
    color: inherit;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}
.quicklink-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--articles-shadow-lg);
    text-decoration: none;
}

.quicklink-card__icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(106, 61, 232, 0.12);
    border: 1px solid rgba(106, 61, 232, 0.18);
    flex-shrink: 0;
}
.quicklink-card__icon .material-icons {
    color: var(--articles-secondary-color);
    font-size: 1.35rem;
}

.quicklink-card__title {
    font-weight: 700;
    margin: 0 0 0.25rem 0;
    color: var(--articles-text-dark);
    font-size: 1.05rem;
}
.quicklink-card__desc {
    margin: 0;
    color: var(--articles-text-medium);
    font-size: 0.95rem;
    line-height: 1.55;
}

@media (min-width: 768px) {
    .quicklinks-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1200px) {
    .quicklinks-grid { grid-template-columns: repeat(4, 1fr); }
}

/* --- Featured Articles Section --- */
.featured-articles {
    padding: 4rem 0;
    background-color: var(--articles-bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

/* Compact variant: used on the Quick Links section header, which sits
   closer to the hero than the page's other (larger) section headers. */
.section-header--compact {
    margin-bottom: 1.75rem;
}

.section-header__title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--articles-text-dark);
    margin-bottom: 0.5rem;
}

/* Paired with .section-header--compact above. */
.section-header__title--compact {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.section-header__subtitle {
    font-size: 1.1rem;
    color: var(--articles-text-medium);
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.65;
}

.featured-articles__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 992px) {
    .featured-articles__grid { grid-template-columns: repeat(3, 1fr); }
}

/* --- Main Content Area --- */
.articles-main {
    padding: 4rem 0;
    background-color: var(--articles-bg-section);
    border-top: 1px solid var(--articles-border-color);
    border-bottom: 1px solid var(--articles-border-color);
}

/* Controls: Search + Filter */
.articles-controls {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.articles-search {
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
}

.articles-search__inner {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--articles-bg-light);
    border: 1px solid var(--articles-border-color);
    border-radius: 999px;
    padding: 0.5rem 0.75rem;
    box-shadow: 0 0 0 rgba(0,0,0,0);
    transition: var(--articles-transition);
}

.articles-search__inner:focus-within {
    border-color: rgba(106, 61, 232, 0.45);
    box-shadow: 0 0 0 4px rgba(106, 61, 232, 0.12);
    background: #fff;
}

.articles-search__icon {
    color: var(--articles-text-light);
    font-size: 1.25rem;
    user-select: none;
}

.articles-search__input {
    border: none;
    outline: none;
    background: transparent;
    flex: 1;
    font-size: 1rem;
    color: var(--articles-text-dark);
    padding: 0.25rem 0.25rem;
    min-width: 120px;
}

.articles-search__clear {
    border: none;
    background: transparent;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--articles-text-light);
    padding: 0.25rem;
    border-radius: 50%;
    transition: var(--articles-transition);
}
.articles-search__clear:hover {
    color: var(--articles-text-dark);
    background: rgba(26, 42, 66, 0.08);
}
.articles-search__clear.hidden { display: none; }

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 2.25rem;
}
.filter-btn {
    background-color: var(--articles-bg-light);
    color: var(--articles-text-medium);
    border: 1px solid var(--articles-border-color);
    padding: 0.6rem 1.1rem;
    font-weight: 600;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--articles-transition);
}
.filter-btn:hover {
    background-color: var(--articles-secondary-color);
    color: #fff;
    border-color: var(--articles-secondary-color);
    transform: translateY(-2px);
}
.filter-btn.active {
    background-color: var(--articles-secondary-color);
    color: #fff;
    border-color: var(--articles-secondary-color);
    box-shadow: var(--articles-shadow);
}

/* Article Grid */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

/* --- Article Card --- */
.article-card {
    background-color: var(--articles-bg-section);
    border-radius: var(--articles-radius);
    box-shadow: var(--articles-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--articles-transition);
    text-decoration: none;
    border: 1px solid var(--articles-border-color);
    position: relative;
}
.article-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--articles-shadow-lg);
    text-decoration: none;
}

.article-card__img-link {
    display: block;
    position: relative;
}

.article-card__image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.3s ease;
    background: var(--articles-bg-light);
}
.article-card:hover .article-card__image { transform: scale(1.05); }

.article-card__category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--articles-accent-color);
    color: var(--articles-text-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.2px;
}

.article-card__content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-card__title {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--articles-text-dark);
    margin-bottom: 0.75rem;
    line-height: 1.35;
}
.article-card__title:hover { color: var(--articles-secondary-color); }

.article-card__excerpt {
    color: var(--articles-text-medium);
    font-size: 0.95rem;
    line-height: 1.65;
    flex-grow: 1;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card__footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--articles-border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--articles-text-light);
    gap: 1rem;
}

.article-card__author { font-weight: 700; color: var(--articles-text-medium); }

/* JS-handled filtering */
.article-card.hidden { display: none; }

/* Empty state */
.articles-empty {
    margin-top: 2.5rem;
    text-align: center;
    padding: 2rem;
    border-radius: var(--articles-radius);
    background: var(--articles-bg-light);
    border: 1px solid var(--articles-border-color);
}
.articles-empty h3 {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--articles-text-dark);
}
.articles-empty p {
    margin: 0 auto 1.25rem;
    max-width: 620px;
    color: var(--articles-text-medium);
    line-height: 1.65;
}

/* Modifier: empty state placed inside a CSS grid (featured-articles__grid
   or article-grid) needs to span every track instead of sitting in the
   first cell. */
.articles-empty--full-span {
    grid-column: 1 / -1;
}

/* Modifier: the <noscript> empty-state notice sits immediately below the
   controls with no extra top gap. */
.articles-empty--flush {
    margin-top: 0;
}

/* --- About / CTA Section --- */
.articles-about {
    padding: 4rem 0;
    background: var(--articles-bg-light);
}

.articles-about__wrap {
    background: #fff;
    border: 1px solid var(--articles-border-color);
    border-radius: var(--articles-radius);
    box-shadow: var(--articles-shadow);
    padding: 2rem;
}

.articles-about__title {
    font-size: 1.75rem;
    font-weight: 900;
    margin-bottom: 0.75rem;
    color: var(--articles-text-dark);
}

.articles-about__text {
    color: var(--articles-text-medium);
    line-height: 1.75;
    margin-bottom: 0.75rem;
}

.articles-cta-card {
    background: linear-gradient(135deg, rgba(106, 61, 232, 0.08), rgba(0, 184, 212, 0.06));
    border: 1px solid rgba(106, 61, 232, 0.18);
    border-radius: var(--articles-radius);
    padding: 1.5rem;
    height: 100%;
}

.articles-cta-card h3 {
    font-size: 1.25rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    color: var(--articles-text-dark);
}

.articles-cta-card p {
    color: var(--articles-text-medium);
    line-height: 1.65;
    margin-bottom: 1.25rem;
}

.articles-cta-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

@media (min-width: 992px) {
    .articles-about__wrap { padding: 2.25rem; }
}