/* ============================================
   CASE-STUDIES.CSS
   Listing page styles for /case-studies/
   ============================================ */

/* ============================================
   HERO
   ============================================ */
.cs-hero-wrapper {
    width: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(79,70,229,0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139,92,246,0.10) 0%, transparent 50%),
        linear-gradient(135deg, #FAFBFC 0%, #F3F4F6 100%);
    background-size: 200% 200%;
    animation: breathingGradient 10s ease-in-out infinite;
}

@keyframes breathingGradient {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@media (prefers-reduced-motion: reduce) {
    .cs-hero-wrapper { animation: none; }
}

.cs-hero-container {
    padding: 0 24px;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.cs-hero-h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: 8px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.cs-hero-h1 .text-highlight {
    color: var(--color-indigo);
}

.cs-hero-body {
    font-size: 20px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin: 24px auto var(--spacing-32);
    max-width: 620px;
}

/* ============================================
   FILTER TABS
   ============================================ */
.cs-filter-wrapper {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 56px;
    z-index: 50;
}

.cs-filter-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.cs-filter-btn {
    padding: 16px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-family-primary);
}

.cs-filter-btn:hover {
    color: var(--color-text-primary);
}

.cs-filter-btn.active {
    color: var(--color-indigo);
    border-bottom-color: var(--color-indigo);
}

.cs-filter-btn.active-green {
    color: var(--color-green);
    border-bottom-color: var(--color-green);
}

.cs-filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    border-radius: 11px;
    font-size: 11px;
    font-weight: 700;
    margin-left: 8px;
}

.cs-count-all {
    background-color: var(--color-indigo-light-bg);
    color: var(--color-indigo);
}

.cs-count-zoho {
    background-color: var(--color-indigo-light-bg);
    color: var(--color-indigo);
}

.cs-count-pd {
    background-color: var(--color-green-light-bg);
    color: var(--color-green-dark);
}

/* ============================================
   CARD GRID
   ============================================ */
.cs-listing-wrapper {
    width: 100%;
    background-color: var(--color-slate);
    padding: 80px 0 96px;
}

.cs-listing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.cs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

/* ============================================
   CARD
   ============================================ */
.cs-card {
    background-color: var(--color-white);
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
    display: flex;
    flex-direction: column;
}

.cs-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -4px rgba(0,0,0,0.1);
    border-color: transparent;
}

.cs-card[data-platform="zoho"]:hover {
    border-color: var(--color-indigo);
    box-shadow: 0 12px 24px -4px rgba(79,70,229,0.15);
}

.cs-card[data-platform="pipedrive"]:hover {
    border-color: var(--color-green);
    box-shadow: 0 12px 24px -4px rgba(16,185,129,0.15);
}

.cs-card-header {
    padding: 32px 32px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cs-card-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cs-badge-zoho {
    background-color: var(--color-indigo-light-bg);
    color: var(--color-indigo);
}

.cs-badge-pd {
    background-color: var(--color-green-light-bg);
    color: var(--color-green-dark);
}

.cs-card-industry {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cs-card-body {
    padding: 24px 32px 32px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.cs-card-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.3;
    margin-bottom: 12px;
}

.cs-card-excerpt {
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

.cs-card-results {
    display: flex;
    gap: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

.cs-result-item {
    flex: 1;
}

.cs-result-value {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.2;
}

.cs-card[data-platform="zoho"] .cs-result-value {
    color: var(--color-indigo);
}

.cs-card[data-platform="pipedrive"] .cs-result-value {
    color: var(--color-green);
}

.cs-result-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.cs-card-footer {
    padding: 0 32px 32px;
}

.cs-read-more {
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s ease;
    text-decoration: none;
}

.cs-card[data-platform="zoho"] .cs-read-more {
    color: var(--color-indigo);
}

.cs-card[data-platform="pipedrive"] .cs-read-more {
    color: var(--color-green);
}

.cs-card:hover .cs-read-more {
    gap: 10px;
}

.cs-read-more i {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.cs-card:hover .cs-read-more i {
    transform: translateX(2px);
}

.cs-card.hidden {
    display: none;
}

/* ============================================
   CTA
   ============================================ */
.cs-cta-wrapper {
    width: 100%;
    background-color: var(--color-navy);
    padding: 96px 0;
}

.cs-cta-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.cs-cta-h2 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-white);
    margin-bottom: 24px;
}

.cs-cta-text {
    font-size: 18px;
    line-height: 1.6;
    color: rgba(255,255,255,0.75);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cs-cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .cs-hero-wrapper {
        padding-top: 140px !important;
        padding-bottom: 64px !important;
    }
    .cs-hero-h1 { font-size: 36px; }
    .cs-hero-body { font-size: 16px; }
    .cs-grid { grid-template-columns: 1fr; }
    .cs-filter-container { gap: 0; }
    .cs-filter-btn { padding: 14px 16px; font-size: 13px; }
    .cs-card-header { padding: 24px 24px 0; }
    .cs-card-body { padding: 20px 24px 24px; }
    .cs-card-footer { padding: 0 24px 24px; }
    .cs-card-title { font-size: 20px; }
    .cs-card-results { flex-direction: column; gap: 16px; }
    .cs-cta-h2 { font-size: 32px; }
}

@media (max-width: 480px) {
    .cs-filter-btn { padding: 12px 10px; font-size: 12px; }
    .cs-filter-count { display: none; }
}