/* ========================================
   Case Study Specific Styles
   ======================================== */

/* Narrow container for better readability */
.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   Case Study Hero
   ======================================== */

.cs-hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    animation: fadeIn 0.6s ease;
}

.cs-title {
    font-size: clamp(32px, 6vw, 56px);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.cs-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    line-height: 1.5;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.cs-subtitle strong {
    font-weight: 600;
}

.cs-meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.cs-meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.cs-meta-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
}

.cs-meta-value {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-text);
}

/* ========================================
   Case Study Sections
   ======================================== */

.cs-section {
    padding: var(--spacing-xl) 0;
}

.cs-section-gray {
    background-color: #fafafa;
}

.cs-section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.cs-section h3 {
    font-size: clamp(20px, 3vw, 24px);
    font-weight: 600;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.cs-section h4 {
    font-size: 18px;
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.cs-section p {
    font-size: 17px;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.cs-section p + p {
    margin-top: var(--spacing-sm);
}

/* ========================================
   Callouts & Special Elements
   ======================================== */

.cs-callout {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-left: 4px solid var(--color-accent);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    border-radius: var(--border-radius);
}

.cs-callout h3 {
    margin-top: 0;
    font-size: 20px;
}

.cs-callout p {
    margin-bottom: 0;
}

.cs-hmw {
    font-size: clamp(20px, 3vw, 28px);
    font-style: italic;
    font-weight: 500;
    text-align: center;
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

/* ========================================
   Lists
   ======================================== */

.cs-list {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-md);
}

.cs-list li {
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.cs-list li strong {
    font-weight: 600;
    color: var(--color-text);
}

/* ========================================
   Role Grid
   ======================================== */

.cs-role-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.cs-role-grid h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    margin-top: 0;
}

.cs-role-grid p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin: 0;
}

/* ========================================
   Insights & Decisions
   ======================================== */

.cs-insight,
.cs-decision,
.cs-lesson,
.cs-feature {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: #fafafa;
    border-radius: var(--border-radius);
}

.cs-insight h4,
.cs-decision h4,
.cs-lesson h4,
.cs-feature h4 {
    margin-top: 0;
    font-size: 18px;
    font-weight: 600;
}

.cs-insight p,
.cs-decision p,
.cs-lesson p,
.cs-feature p {
    margin-bottom: 0;
    font-size: 16px;
}

/* ========================================
   Phases
   ======================================== */

.cs-phase {
    margin: var(--spacing-lg) 0;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.cs-phase:last-child {
    border-bottom: none;
}

.cs-phase h3 {
    margin-top: 0;
}

/* ========================================
   Images
   ======================================== */

.cs-image-full {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.cs-image-caption {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-align: center;
    font-style: italic;
    margin-bottom: var(--spacing-lg);
}

.cs-image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.cs-image-grid img {
    width: 100%;
    border-radius: var(--border-radius);
}

/* ========================================
   Quotes & Testimonials
   ======================================== */

.cs-quote {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: #fafafa;
    border-left: 4px solid var(--color-accent);
    border-radius: var(--border-radius);
}

.cs-quote p {
    font-size: clamp(18px, 2.5vw, 24px);
    font-style: italic;
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.cs-quote footer {
    font-size: 15px;
    font-style: normal;
    color: var(--color-text-secondary);
}

.cs-testimonial {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    border-left: 3px solid var(--color-border);
    background: #fafafa;
    border-radius: var(--border-radius);
}

.cs-testimonial p {
    font-size: 16px;
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.cs-testimonial footer {
    font-size: 14px;
    font-style: normal;
    color: var(--color-text-secondary);
}

/* ========================================
   Impact Section
   ======================================== */

.cs-impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.cs-impact-card {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: var(--border-radius);
    text-align: center;
}

.cs-impact-card h3 {
    font-size: clamp(36px, 5vw, 48px);
    font-weight: 700;
    color: var(--color-accent);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
}

.cs-impact-card p {
    font-size: 15px;
    line-height: 1.5;
    margin: 0;
    color: var(--color-text);
}

/* ========================================
   CTA Section
   ======================================== */

.cs-cta {
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.button-primary {
    display: inline-block;
    padding: 14px 32px;
    background-color: var(--color-accent);
    color: white;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
    text-decoration: none;
}

.button-primary:hover {
    background-color: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
    opacity: 1;
}

/* ========================================
   Responsive Adjustments
   ======================================== */

@media (max-width: 768px) {
    .cs-meta-grid {
        grid-template-columns: 1fr;
    }

    .cs-image-grid {
        grid-template-columns: 1fr;
    }

    .cs-impact-grid {
        grid-template-columns: 1fr;
    }

    .cs-role-grid {
        grid-template-columns: 1fr;
    }
}