/* ========================================
   Case Studies Section
   ======================================== */
.case-studies-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.case-study-card {
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(100, 255, 218, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
}

.case-study-card:hover {
    border-color: rgba(0, 217, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.15);
}

.case-study-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    background: rgba(0, 217, 255, 0.05);
    transition: background 0.2s ease;
}

.case-study-header:hover {
    background: rgba(0, 217, 255, 0.08);
}

.case-study-title {
    color: var(--color-accent);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 600;
    margin: 0;
    flex: 1;
    padding-right: var(--spacing-md);
}

.case-study-toggle {
    background: var(--gradient-accent);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.case-study-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 217, 255, 0.4);
}

.toggle-icon {
    transition: transform 0.3s ease;
}

.case-study-card.active .toggle-icon {
    transform: rotate(45deg);
}

.case-study-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 var(--spacing-lg);
}

.case-study-card.active .case-study-content {
    max-height: 2000px;
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
}

.case-study-section {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
}

.case-study-section h4 {
    color: var(--color-accent-secondary);
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.case-study-section p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 100%;
}

.case-study-section ul {
    list-style: none;
    padding-left: 0;
}

.case-study-section ul li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.case-study-section ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

.case-study-section.highlight {
    background: rgba(0, 217, 255, 0.05);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
}

.case-study-section.insight {
    background: rgba(100, 255, 218, 0.05);
    border-left: 3px solid var(--color-accent-secondary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
}

.case-study-section.insight p {
    color: var(--color-text);
}

.case-study-section.outcome {
    background: rgba(0, 255, 170, 0.05);
    border: 1px solid rgba(0, 255, 170, 0.2);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
}

.case-study-section.outcome h4 {
    color: var(--color-accent-secondary);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .case-study-title {
        font-size: 0.95rem;
    }

    .case-study-toggle {
        width: 35px;
        height: 35px;
        font-size: 1.25rem;
    }

    .case-study-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .case-study-content {
        padding: 0 var(--spacing-md);
    }

    .case-study-card.active .case-study-content {
        padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
    }
}