/* ===== Case Studies Page Styles ===== */

.cs-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--accent-light);
    letter-spacing: 2px;
    margin-top: 8px;
    font-weight: 600;
}

/* Case Study Index / Quick nav */
.cs-index {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    max-width: 1000px;
    margin: 40px auto 0;
}

.cs-index-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
    text-align: left;
}

.cs-index-item:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.cs-index-name {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.cs-index-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Sections */
.cs-section {
    padding-bottom: 80px;
}

.cs-alt {
    background: var(--bg-secondary);
}

.cs-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    background: rgba(108, 92, 231, 0.15);
    border: 1px solid rgba(108, 92, 231, 0.3);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.cs-lead {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 820px;
    margin: 0 auto 40px;
    text-align: center;
}

.cs-block {
    max-width: 880px;
    margin: 0 auto 48px;
}

.cs-block h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.cs-block h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--accent-light);
    margin-bottom: 12px;
}

.cs-block p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Stats panel */
.cs-stats {
    max-width: 880px;
    margin: 0 auto 48px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.cs-stat {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(116, 185, 255, 0.08));
    border: 1px solid rgba(108, 92, 231, 0.25);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cs-stat-num {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 2.5vw, 1.8rem);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cs-stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Tables */
.cs-table-wrap {
    overflow-x: auto;
    margin: 16px 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.cs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    min-width: 420px;
}

.cs-table th,
.cs-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.cs-table th {
    background: var(--bg-card-hover);
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--accent-light);
    text-transform: uppercase;
    font-size: 0.78rem;
    letter-spacing: 0.5px;
}

.cs-table tbody tr:last-child td {
    border-bottom: none;
}

.cs-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.cs-table td strong {
    color: var(--accent-light);
}

.cs-table-wide {
    min-width: 720px;
}

.cs-summary-table-wrap {
    max-width: 880px;
    margin: 0 auto 40px;
    overflow-x: auto;
}

.cs-note {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-top: 12px;
}

/* Checklists */
.cs-checklist {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cs-checklist li {
    position: relative;
    padding-left: 28px;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

.cs-checklist li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gradient);
    opacity: 0.8;
}

/* Impact cards */
.cs-impact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.cs-impact-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}

.cs-impact-item:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.cs-impact-num {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.cs-impact-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.cs-impact-item p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Framework box */
.cs-framework {
    margin-top: 24px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid rgba(108, 92, 231, 0.25);
    border-radius: var(--radius);
}

/* Formula bar */
.cs-formula {
    max-width: 880px;
    margin: 40px auto 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 28px 24px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(116, 185, 255, 0.08));
    border: 1px solid rgba(108, 92, 231, 0.25);
    border-radius: var(--radius);
    text-align: center;
}

.cs-formula span {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
}

.cs-formula-sym {
    color: var(--accent-light);
    font-size: 1.3rem !important;
}

/* Responsive */
@media (max-width: 640px) {
    .cs-index {
        grid-template-columns: 1fr;
    }

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

    .cs-formula {
        gap: 10px;
    }
}

@media (max-width: 420px) {
    .cs-stats {
        grid-template-columns: 1fr;
    }
}