/* =========================================================
   SmileAge — Research & Knowledge Hub (page-specific styles)
   -----------------------------------------------------------
   Scope: styles only the Research page's content-listing area.
   The hero above it reuses the shared ".sa-page-hero" pattern
   from programs.css (that's why this page also links
   programs.css) — do not redeclare hero classes here.
   Every class in THIS file is prefixed "sa-res-", distinct from
   "sa-", "sa-ev-", and "sa-rep-" used elsewhere, so it can be
   loaded alongside those without any selector collisions.

   Content-type color mapping (fixed order, validated for CVD/
   normal-vision adjacent-pair separation with
   scripts/validate_palette.js — same 4-slot order used for the
   Program Impact Report on the Events page, so the whole site
   reads as one system):
     1) Research Paper -> green   (var(--green))
     2) Blog            -> purple (var(--purple))
     3) News             -> orange (var(--orange))
     4) Article          -> blue   (var(--blue))
   Load order: style.css, then programs.css, then this file,
   then responsive.css last.
   ========================================================= */

.sa-res-section {
    background-color: #fff;
    padding-block: clamp(2.5rem, 5vh, 3.5rem) clamp(4rem, 8vh, 6rem);
}

/* ---------- Type filter chips ---------- */
.sa-res-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-bottom: 2rem;
}

.sa-res-filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.15rem;
    background-color: #fff;
    border: 1px solid rgba(28, 27, 23, 0.14);
    border-radius: var(--sa-radius-pill);
    color: var(--mission-muted, #6f6c63);
    font-weight: 700;
    font-size: 0.85rem;
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.sa-res-filter-chip:not(.sa-res-filter-chip-active):hover {
    border-color: var(--green, #2fa878);
    color: var(--green-dark, #16362a);
}

.sa-res-filter-chip-active:hover {
    color: #fff;
}

.sa-res-filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.3rem;
    height: 1.3rem;
    padding-inline: 0.3rem;
    border-radius: 50%;
    background-color: rgba(28, 27, 23, 0.08);
    font-size: 0.7rem;
}

.sa-res-filter-dot {
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
}

.sa-res-filter-chip-research .sa-res-filter-dot {
    background-color: var(--green, #2fa878);
}

.sa-res-filter-chip-blog .sa-res-filter-dot {
    background-color: var(--purple, #7c3aed);
}

.sa-res-filter-chip-news .sa-res-filter-dot {
    background-color: var(--orange, #ee6518);
}

.sa-res-filter-chip-article .sa-res-filter-dot {
    background-color: var(--blue, #2f6fd6);
}

.sa-res-filter-chip-active {
    background-color: var(--navy-heading, #16213e);
    border-color: var(--navy-heading, #16213e);
    color: #fff;
}

.sa-res-filter-chip-active .sa-res-filter-count {
    background-color: rgba(255, 255, 255, 0.18);
    color: #fff;
}

/* ---------- Type tags (reused on spotlight + cards) ---------- */
.sa-res-type-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 0.35rem 0.8rem;
    border-radius: var(--sa-radius-pill);
}

.sa-res-type-tag-research {
    background-color: var(--icon-green-bg, #e2f0e8);
    color: var(--green-dark, #16362a);
}

.sa-res-type-tag-blog {
    background-color: var(--purple-soft, #ede4fb);
    color: var(--purple-dark, #5b21b6);
}

.sa-res-type-tag-news {
    background-color: var(--icon-orange-bg, #fbe6d8);
    color: var(--icon-orange-fg, #e2632e);
}

.sa-res-type-tag-article {
    background-color: var(--blue-soft, #e3edfb);
    color: var(--blue-dark, #1d4ed8);
}

/* ---------- Spotlight: featured resource ----------
   Core spotlight rules (.sa-res-spotlight, -accent, -ribbon,
   -icon, -body, -title, -meta) live in style.css at the user's
   request. Only the rules still shared with/relevant to the
   rest of this file stay here. */
.sa-res-spotlight-text {
    font-size: 0.98rem;
    line-height: 1.75;
    color: var(--mission-muted, #6f6c63);
    max-width: 52rem;
    margin-bottom: 1.25rem;
}

.sa-res-tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.sa-res-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--mission-muted, #6f6c63);
    background-color: var(--cream-bg, #f8f4ee);
    padding: 0.3rem 0.75rem;
    border-radius: var(--sa-radius-pill);
}

.sa-res-tag-more {
    color: var(--green-dark, #16362a);
    background-color: var(--icon-green-bg, #e2f0e8);
}

/* .sa-res-btn-read lives in style.css (spotlight-only button). */

/* ---------- Results row ---------- */
.sa-res-results-row {
    margin-bottom: 1.75rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid rgba(28, 27, 23, 0.08);
}

.sa-res-results-count {
    font-size: 0.9rem;
    color: var(--mission-muted, #6f6c63);
}

.sa-res-results-count strong {
    color: var(--ink, #1c1b17);
}

.sa-res-no-results {
    display: none;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--mission-muted, #6f6c63);
}

.sa-res-no-results i {
    font-size: 2rem;
    color: rgba(28, 27, 23, 0.2);
    margin-bottom: 1rem;
    display: block;
}

/* ---------- Group heading (e.g. above the blog grid) ---------- */
.sa-res-group-title {
    font-family: var(--font-sans, "Plus Jakarta Sans", sans-serif);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--navy-heading, #16213e);
    margin-bottom: 1.5rem;
}

/* ---------- Resource grid ---------- */
.sa-res-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.sa-res-card {
    display: flex;
    flex-direction: column;
    background-color: #fff;
    border: 1px solid rgba(28, 27, 23, 0.08);
    border-radius: 1.25rem;
    overflow: hidden;
    box-shadow: var(--sa-shadow-soft);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sa-res-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--sa-shadow-hover);
}

.sa-res-card-media {
    position: relative;
    overflow: hidden;
}

.sa-res-group-title  {
    margin-top: 50px;
}

.sa-res-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.sa-res-card:hover .sa-res-card-media img {
    transform: scale(1.06);
}

.sa-res-card-media .sa-res-type-tag {
    position: absolute;
    top: 0.85rem;
    left: 0.85rem;
}

.sa-res-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.4rem 1.4rem 1.5rem;
}

.sa-res-card-title {
    font-family: var(--font-sans, "Plus Jakarta Sans", sans-serif);
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1.4;
    color: var(--navy-heading, #16213e);
    margin-bottom: 0.6rem;
}

.sa-res-card-text {
    font-size: 0.87rem;
    line-height: 1.6;
    color: var(--mission-muted, #6f6c63);
    margin-bottom: 1rem;
}

.sa-res-card-body .sa-res-tag-row {
    margin-bottom: 1rem;
}

.sa-res-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(28, 27, 23, 0.08);
}

.sa-res-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--mission-muted, #6f6c63);
}

.sa-res-card-meta i {
    color: var(--green, #2fa878);
    font-size: 0.75rem;
}

.sa-res-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: auto;
}

.sa-res-card-author {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ink, #1c1b17);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sa-res-card-author i {
    flex-shrink: 0;
    color: rgba(28, 27, 23, 0.35);
}

.sa-res-read-more {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--green-dark, #16362a);
    text-decoration: none;
    transition: color 0.2s ease, gap 0.2s ease;
}

.sa-res-read-more:hover {
    color: var(--green, #2fa878);
    gap: 0.5rem;
}