/* =============================================================================
   SYNTROPY — CASE STUDY STYLES (archive + single)
   ============================================================================= */

/* --- Filter Bar ------------------------------------------------------------- */
.filter-bar {
    background: var(--color-bg-2);
    border-bottom: 1px solid var(--color-border-dark);
    padding: var(--sp-4) 0;
    position: sticky;
    top: 70px;
    z-index: 100;
}

.filter-bar-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.4rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
}

.filter-btn:hover {
    color: var(--color-text);
    background: var(--color-bg-3);
}

.filter-btn.active {
    color: var(--color-text);
    background: var(--color-bg-3);
    border-color: var(--color-border);
}

/* --- Case Studies Grid ------------------------------------------------------ */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--sp-6);
}

.cs-card {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--color-text);
    padding: 0;
    overflow: hidden;
    border-top: 2px solid transparent;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-top-color 0.25s ease;
}

.cs-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
    border-top-color: var(--color-primary);
}

.cs-card-thumb {
    overflow: hidden;
}

.cs-card-thumb img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.cs-card:hover .cs-card-thumb img {
    transform: scale(1.04);
}

.cs-card-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: var(--sp-6);
}

.cs-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--sp-3);
    color: var(--color-text);
}

.cs-card-excerpt {
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--sp-5);
}

.cs-card-outcomes {
    display: flex;
    gap: var(--sp-2);
    flex-wrap: wrap;
    margin-bottom: var(--sp-5);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--color-border-dark);
}

.cs-outcome-pill {
    background: rgba(232, 24, 93, 0.08);
    border: 1px solid rgba(232, 24, 93, 0.18);
    border-radius: var(--radius-md);
    padding: var(--sp-2) var(--sp-3);
    text-align: center;
    flex: 1;
    min-width: 80px;
}

.cs-outcome-pill .cs-outcome-value {
    display: block;
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.cs-outcome-pill .cs-outcome-label {
    display: block;
    font-size: 0.65rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    margin-top: 3px;
}

.cs-card-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: auto;
    padding-top: var(--sp-4);
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    transition: gap var(--transition), color var(--transition);
}

.cs-card:hover .cs-card-link {
    gap: 8px;
    color: var(--color-secondary);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: var(--sp-20) 0;
    color: var(--color-text-muted);
}

/* Pagination — scoped to .navigation so it never bleeds into the header .nav-links */
.navigation.pagination .nav-links,
.posts-navigation .nav-links {
    display: flex;
    justify-content: center;
    gap: var(--sp-2);
    margin-top: var(--sp-12);
    flex-wrap: wrap;
}

.navigation.pagination .nav-links a,
.posts-navigation .nav-links a,
.navigation.pagination .nav-links span.current,
.posts-navigation .nav-links span.current {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid var(--color-border-dark);
    background: var(--color-bg-2);
    color: var(--color-text-muted);
    transition: all var(--transition);
}

.navigation.pagination .nav-links a:hover,
.posts-navigation .nav-links a:hover {
    color: var(--color-text);
    border-color: var(--color-primary);
}
.navigation.pagination .nav-links span.current,
.posts-navigation .nav-links span.current {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* --- Single Case Study ------------------------------------------------------ */
.cs-single { padding-bottom: 0; }

/* Header */
.cs-header {
    padding-top: 7rem;
    padding-bottom: var(--sp-12);
    background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(232,24,93,0.13) 0%, transparent 60%);
}

.cs-header-meta {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
    margin-bottom: var(--sp-6);
}

.cs-back {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    transition: color var(--transition);
}
.cs-back:hover { color: var(--color-text); }

.cs-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    max-width: 800px;
    margin-bottom: var(--sp-8);
}

/* Outcomes bar */
.cs-outcomes-bar {
    display: flex;
    gap: var(--sp-8);
    flex-wrap: wrap;
    padding-top: var(--sp-8);
    border-top: 1px solid var(--color-border-dark);
}

.cs-outcome-stat {
    display: flex;
    flex-direction: column;
    gap: var(--sp-1);
}

.cs-outcome-value {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--color-primary);
    line-height: 1;
}

.cs-outcome-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

/* Featured image */
.cs-featured-image {
    margin-bottom: var(--sp-12);
}

.cs-featured-image img {
    width: 100%;
    max-height: 520px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-dark);
}

/* Body grid */
.cs-body-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--sp-16);
    align-items: start;
}

.cs-section-block {
    margin-bottom: var(--sp-10);
    padding-bottom: var(--sp-10);
    border-bottom: 1px solid var(--color-border-dark);
}

.cs-section-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.cs-section-block h2 {
    font-size: 1.5rem;
    margin-bottom: var(--sp-4);
}

.cs-section-block p {
    font-size: 1.0625rem;
    line-height: 1.8;
}

/* Testimonial */
.cs-testimonial {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--sp-6) var(--sp-8);
    margin-top: var(--sp-8);
}

.cs-testimonial p {
    font-size: 1.0625rem;
    font-style: italic;
    color: var(--color-text);
    line-height: 1.7;
}

/* Sidebar */
.cs-sidebar {
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}

.cs-sidebar-block {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-xl);
    padding: var(--sp-6);
}

.cs-sidebar-block h4 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--sp-4);
}

.cs-sidebar-outcomes {
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}

.cs-sidebar-stat .cs-outcome-value { font-size: 1.75rem; }
.cs-sidebar-stat .cs-outcome-label { margin-top: var(--sp-1); }

.cs-sidebar-block p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.cs-related-product-link {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: color var(--transition);
}
.cs-related-product-link:hover { color: var(--color-secondary); }

.cs-sidebar-cta h4 {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: none;
    color: var(--color-text);
}

/* Footer nav */
.cs-footer-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--sp-4);
    flex-wrap: wrap;
}

@media (max-width: 900px) {
    .cs-body-grid { grid-template-columns: 1fr; }
    .cs-sidebar { position: static; }
}

@media (max-width: 640px) {
    .cs-outcomes-bar { gap: var(--sp-6); }
    .cs-footer-nav { flex-direction: column; }
    .cs-footer-nav .btn { width: 100%; justify-content: center; }
}

/* Admin bar pushes the fixed nav down — adjust sticky filter bar accordingly */
.admin-bar .filter-bar { top: 102px; }
@media screen and (max-width: 782px) {
    .admin-bar .filter-bar { top: 116px; }
}

/* =============================================================================
   LIGHT MODE — case study overrides
   ============================================================================= */

[data-theme="light"] .filter-bar {
    background: var(--color-bg-2);
    border-bottom-color: var(--border);
}

[data-theme="light"] .filter-btn.active,
[data-theme="light"] .filter-btn:hover {
    background: var(--color-bg-3);
    border-color: var(--color-border);
}

[data-theme="light"] .cs-testimonial {
    background: var(--color-bg-2);
    border-color: var(--color-border);
}

[data-theme="light"] .cs-sidebar-block {
    background: var(--color-bg-2);
    border-color: var(--color-border-dark);
}

[data-theme="light"] .cs-section-block {
    border-bottom-color: var(--border);
}

[data-theme="light"] .cs-outcomes-bar {
    border-top-color: var(--border);
}

[data-theme="light"] .navigation.pagination .nav-links a,
[data-theme="light"] .posts-navigation .nav-links a,
[data-theme="light"] .navigation.pagination .nav-links span.current,
[data-theme="light"] .posts-navigation .nav-links span.current {
    background: var(--color-bg-2);
    border-color: var(--color-border-dark);
}

/* Card hover in light mode — softer shadow */
[data-theme="light"] .cs-card:hover {
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}
[data-theme="light"] .cs-card-outcomes {
    border-top-color: #e8e8e8;
}

/* =============================================================================
   MOBILE — case study responsive improvements
   ============================================================================= */

@media (max-width: 768px) {
    .cs-header { padding-top: 5.5rem; padding-bottom: var(--sp-8); }
    .cs-title  { font-size: clamp(1.75rem, 5vw, 2.5rem); }
    .cs-header-meta { flex-wrap: wrap; }
    .cs-testimonial { padding: var(--sp-5) var(--sp-5); }
}

@media (max-width: 480px) {
    .cs-header { padding-top: 5rem; }
    .filter-bar-inner { gap: var(--sp-1); }
    .filter-btn { padding: 0.35rem 0.75rem; font-size: 0.75rem; }
    .cs-outcome-stat .cs-outcome-value { font-size: 1.625rem; }
}