/* ============================================================
   Retina Image Bank Plugin — Frontend Styles
   ============================================================ */

/* Gallery Grid */
.rib-gallery {
    display: grid;
    gap: 28px;
    margin: 24px 0;
}
.rib-cols-1 { grid-template-columns: 1fr; }
.rib-cols-2 { grid-template-columns: repeat(2, 1fr); }
.rib-cols-3 { grid-template-columns: repeat(3, 1fr); }
.rib-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
    .rib-cols-3, .rib-cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .rib-cols-2, .rib-cols-3, .rib-cols-4 { grid-template-columns: 1fr; }
}

/* Card */
.rib-card {
    background: #fff;
    border: 1px solid #e4e8f0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,.06);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s;
}
.rib-card:hover { box-shadow: 0 4px 18px rgba(0,0,0,.11); }

/* Image */
.rib-image-wrap {
    width: 100%;
    background: #0a1628;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.rib-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}
.rib-card:hover .rib-image-wrap img { transform: scale(1.02); }

/* Body */
.rib-body {
    padding: 18px 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.rib-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: #1a2236;
    margin: 0;
    line-height: 1.4;
}

.rib-description {
    font-size: 0.875rem;
    color: #4a5568;
    line-height: 1.65;
    margin: 0;
}

/* Meta list */
.rib-meta {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.82rem;
    color: #5a6882;
}
.rib-meta li { margin-bottom: 3px; }
.rib-meta li strong { color: #2d3a52; }

/* Keywords / tags */
.rib-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}
.rib-tag {
    font-size: 0.72rem;
    background: #eef2fa;
    color: #3558a0;
    border-radius: 20px;
    padding: 3px 9px;
    font-weight: 500;
}

/* ── Diagnosis Challenge ───────────────────────────────────── */
.rib-challenge {
    background: #f0f5ff;
    border: 1px solid #c5d4f5;
    border-radius: 8px;
    padding: 16px;
    margin-top: 4px;
}

.rib-badge {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    background: #3558a0;
    color: #fff;
    border-radius: 20px;
    padding: 3px 10px;
    margin-bottom: 8px;
}
.rib-badge-answer {
    background: #1a7a4a;
}

.rib-question {
    font-size: 0.9rem;
    font-weight: 600;
    color: #1a2236;
    margin: 0 0 12px;
}

.rib-flip-btn {
    display: inline-block;
    background: #3558a0;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 8px 18px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}
.rib-flip-btn:hover { background: #244080; }
.rib-flip-back { background: #64748b; }
.rib-flip-back:hover { background: #4a5568; }

.rib-challenge-back { animation: ribFadeIn 0.25s ease; }
@keyframes ribFadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.rib-answer {
    font-size: 1rem;
    font-weight: 700;
    color: #1a7a4a;
    margin: 0 0 8px;
}

.rib-explain {
    font-size: 0.85rem;
    color: #374151;
    line-height: 1.6;
    margin: 0 0 12px;
}

/* ── Attribution ──────────────────────────────────────────── */
.rib-attribution {
    border-top: 1px solid #e4e8f0;
    padding-top: 10px;
    margin-top: 4px;
}
.rib-credit {
    font-size: 0.78rem;
    color: #64748b;
    margin: 0 0 4px;
}
.rib-source {
    font-size: 0.76rem;
    color: #8496b0;
    margin: 0;
    line-height: 1.5;
}
.rib-source a {
    color: #3558a0;
    text-decoration: underline;
}
.rib-source a:hover { color: #1a3070; }
.rib-source small { font-size: 0.7rem; color: #a0aec0; }