/* =============================================================================
   CASE STUDY CARD STYLES
   Phase 3: Brand alignment and interactive motion tokens
   ============================================================================= */

.case-study-card {
    display: flex;
    flex-direction: column;
    background-color: var(--color-surface-primary, #ffffff);
    border: var(--border-width-thin, 1px) solid var(--color-border-default, #eaeaea);
    border-radius: var(--radius-xl, 1rem);
    padding: var(--space-6, 1.5rem);
    box-shadow: var(--shadow-sm);
    
    /* Using specific properties for transitions so we do not override the 
       opacity transitions injected by the scroll-reveal classes */
    transition: transform var(--motion-transition-interactive), 
                box-shadow var(--motion-transition-interactive),
                border-color var(--motion-transition-interactive);
                
    height: 100%; /* Crucial for ensuring all cards in a grid row are the same height */
}

.case-study-card:hover:not(:focus-within) {
    transform: translateY(-0.125rem); /* Subtle lift rather than an aggressive bounce */
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
}

/* --- Logo Wrapper --- */
.case-study-card__logo-wrapper {
    height: 40px; /* Fixed height so broken images don't stretch the card */
    margin-bottom: var(--space-4, 1rem);
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.case-study-card__logo {
    max-height: 100%;
    max-width: 140px;
    object-fit: contain; /* Keeps logo proportions intact */
    color: transparent; /* Hides ugly broken image text if image fails to load */
}

/* --- Main Content --- */
.case-study-card__content {
    flex: 1; /* This pushes the footer section to the bottom of the card */
    display: flex;
    flex-direction: column;
}

.case-study-card__segment {
    font-size: var(--font-size-micro, 0.75rem);
    font-weight: var(--font-weight-bold, 700);
    letter-spacing: var(--letter-spacing-wide, 0.1em);
    text-transform: uppercase;
    color: var(--color-primary); /* Uses Action Blue */
    margin-bottom: var(--space-2, 0.5rem);
}

.case-study-card__title {
    font-family: var(--font-heading, system-ui, sans-serif);
    font-size: var(--font-size-h5, 1.125rem);
    font-weight: var(--font-weight-bold, 700);
    color: var(--color-heading, #111827);
    margin: 0 0 var(--space-3, 0.75rem) 0;
    line-height: var(--line-height-heading, 1.3);
}

.case-study-card__copy {
    font-size: var(--font-size-body-sm, 0.875rem);
    color: var(--color-body-muted, #4b5563);
    line-height: var(--line-height-body, 1.6);
    margin: 0;
    
    /* Clamps text to 4 lines max, adding an ellipsis (...) if it overflows */
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* --- Footer --- */
.case-study-card__footer {
    margin-top: var(--space-6, 1.5rem);
    display: flex;
    flex-direction: column;
    gap: var(--space-5, 1.25rem);
}

/* Elevated Metric Box */
.case-study-card__metric-box {
    background-color: var(--color-surface-subtle, #f9fafb);
    border-left: var(--border-width-medium, 3px) solid var(--color-primary);
    padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
    border-radius: 0 var(--radius-md, 0.5rem) var(--radius-md, 0.5rem) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-1, 0.25rem);
}

.case-study-card__metric-label {
    font-size: var(--font-size-micro, 0.75rem);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide, 0.05em);
    color: var(--color-text-muted, #6b7280);
    font-weight: var(--font-weight-semibold, 600);
}

.case-study-card__metric-value {
    font-size: var(--font-size-body-sm, 0.875rem);
    color: var(--color-text-primary, #111827);
    font-weight: var(--font-weight-semibold, 600);
    line-height: var(--line-height-tight, 1.4);
}

/* Action Link */
.case-study-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2, 0.5rem);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold, 600);
    font-size: var(--font-size-body-sm, 0.875rem);
    text-decoration: none;
    transition: gap var(--motion-transition-interactive), 
                opacity var(--motion-transition-interactive);
}

.case-study-card__link:hover {
    gap: var(--space-3, 0.75rem); /* Arrow nudges to the right on hover */
    opacity: 0.8;
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
    .case-study-card:hover {
        transform: none !important;
    }
    .case-study-card__link:hover {
        gap: var(--space-2, 0.5rem) !important;
    }
}