/**
 * Case Studies CSS
 * Styles for archive and single templates
 * 
 * Color palette matches tedjordan.org:
 * - Primary: #6366f1 (indigo)
 * - Secondary: #8b5cf6 (violet)
 * - Dark: #1e1b4b
 * - Light: #f8fafc
 */

/* ============================================
   CSS VARIABLES
============================================ */
:root {
    --cs-primary: #6366f1;
    --cs-primary-dark: #4f46e5;
    --cs-primary-light: #818cf8;
    --cs-secondary: #8b5cf6;
    --cs-accent: #f59e0b;
    
    --cs-dark: #1e1b4b;
    --cs-dark-alt: #312e81;
    --cs-gray-900: #111827;
    --cs-gray-800: #1f2937;
    --cs-gray-700: #374151;
    --cs-gray-600: #4b5563;
    --cs-gray-500: #6b7280;
    --cs-gray-400: #9ca3af;
    --cs-gray-300: #d1d5db;
    --cs-gray-200: #e5e7eb;
    --cs-gray-100: #f3f4f6;
    --cs-gray-50: #f9fafb;
    --cs-white: #ffffff;
    
    --cs-success: #10b981;
    --cs-warning: #f59e0b;
    --cs-error: #ef4444;
    
    --cs-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --cs-font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --cs-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --cs-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --cs-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --cs-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --cs-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    --cs-radius-sm: 0.375rem;
    --cs-radius: 0.5rem;
    --cs-radius-lg: 0.75rem;
    --cs-radius-xl: 1rem;
    --cs-radius-2xl: 1.5rem;
    
    --cs-transition: 0.2s ease;
    --cs-transition-slow: 0.3s ease;
}

/* ============================================
   BASE / RESET
============================================ */
.cs-archive,
.cs-single {
    font-family: var(--cs-font-sans);
    color: var(--cs-gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.cs-archive *,
.cs-single * {
    box-sizing: border-box;
}

.cs-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

@media (min-width: 768px) {
    .cs-container {
        padding: 0 2rem;
    }
}

/* ============================================
   BUTTONS
============================================ */
.cs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--cs-radius);
    border: none;
    cursor: pointer;
    transition: all var(--cs-transition);
}

.cs-btn--primary {
    background: linear-gradient(135deg, var(--cs-primary) 0%, var(--cs-secondary) 100%);
    color: var(--cs-white) !important;
    box-shadow: var(--cs-shadow-md);
}

.cs-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--cs-shadow-lg);
    color: var(--cs-white) !important;
}

.cs-btn--large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.cs-btn--outline {
    background: transparent;
    border: 2px solid var(--cs-primary);
    color: var(--cs-primary);
}

.cs-btn--outline:hover {
    background: var(--cs-primary);
    color: var(--cs-white);
}

/* ============================================
   BADGES
============================================ */
.cs-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    white-space: nowrap;
}

.cs-badge--objective {
    background: rgba(99, 102, 241, 0.1);
    color: var(--cs-primary-dark);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.cs-badge--channel {
    background: rgba(139, 92, 246, 0.1);
    color: var(--cs-secondary);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.cs-badge--activation {
    background: rgba(16, 185, 129, 0.1);
    color: var(--cs-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.cs-badge--more {
    background: var(--cs-gray-100);
    color: var(--cs-gray-600);
    border: 1px solid var(--cs-gray-200);
}

/* ============================================
   ARCHIVE - HERO
============================================ */
.cs-hero {
    padding: 4rem 0 3rem;
    background: linear-gradient(135deg, var(--cs-dark) 0%, var(--cs-dark-alt) 100%);
    color: var(--cs-white);
    text-align: center;
}

.cs-hero__title {
    margin: 0 0 1rem;
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.cs-hero__subtitle {
    margin: 0 auto;
    max-width: 640px;
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

/* ============================================
   ARCHIVE - FILTERS
============================================ */
.cs-filters {
    padding: 1.5rem 0;
    background: var(--cs-white);
    border-bottom: 1px solid var(--cs-gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.cs-filters__header {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.cs-filters__toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: var(--cs-gray-100);
    border: 1px solid var(--cs-gray-200);
    border-radius: var(--cs-radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--cs-gray-700);
    cursor: pointer;
    transition: all var(--cs-transition);
}

.cs-filters__toggle:hover {
    background: var(--cs-gray-200);
}

.cs-filters__toggle[aria-expanded="true"] {
    background: var(--cs-primary);
    border-color: var(--cs-primary);
    color: var(--cs-white);
}

.cs-filters__toggle-icon {
    display: flex;
}

.cs-filters__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.25rem;
    height: 1.25rem;
    padding: 0 0.375rem;
    background: var(--cs-primary);
    color: var(--cs-white);
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 9999px;
}

.cs-filters__toggle[aria-expanded="true"] .cs-filters__count {
    background: var(--cs-white);
    color: var(--cs-primary);
}

.cs-filters__clear {
    padding: 0.5rem 0.75rem;
    background: transparent;
    border: none;
    font-size: 0.8125rem;
    color: var(--cs-gray-500);
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.cs-filters__clear:hover {
    color: var(--cs-error);
}

.cs-filters__panel {
    display: none;
    padding-top: 1.5rem;
}

.cs-filters__panel[aria-hidden="false"] {
    display: block;
}

.cs-filter-group {
    margin-bottom: 1.25rem;
}

.cs-filter-group:last-child {
    margin-bottom: 0;
}

.cs-filter-group__title {
    margin: 0 0 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--cs-gray-500);
}

.cs-filter-group__options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.cs-filter-chip {
    display: inline-flex;
    cursor: pointer;
}

.cs-filter-chip input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.cs-filter-chip__label {
    display: inline-flex;
    padding: 0.375rem 0.875rem;
    background: var(--cs-white);
    border: 1px solid var(--cs-gray-300);
    border-radius: 9999px;
    font-size: 0.8125rem;
    color: var(--cs-gray-700);
    transition: all var(--cs-transition);
}

.cs-filter-chip:hover .cs-filter-chip__label {
    border-color: var(--cs-primary);
    color: var(--cs-primary);
}

.cs-filter-chip input:checked + .cs-filter-chip__label {
    background: var(--cs-primary);
    border-color: var(--cs-primary);
    color: var(--cs-white);
}

/* ============================================
   ARCHIVE - RESULTS INFO
============================================ */
.cs-results-info {
    padding: 1rem 0;
    background: var(--cs-gray-50);
}

.cs-results-info__text {
    margin: 0;
    font-size: 0.875rem;
    color: var(--cs-gray-600);
}

/* ============================================
   ARCHIVE - GRID
============================================ */
.cs-grid-section {
    padding: 3rem 0;
    background: var(--cs-gray-50);
    min-height: 50vh;
}

.cs-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .cs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .cs-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

/* ============================================
   ARCHIVE - CARD
============================================ */
.cs-card {
    background: var(--cs-white);
    border-radius: var(--cs-radius-xl);
    overflow: hidden;
    box-shadow: var(--cs-shadow);
    transition: all var(--cs-transition-slow);
}

.cs-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cs-shadow-xl);
}

.cs-card[data-hidden="true"] {
    display: none;
}

.cs-card__link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.cs-card__image-wrapper {
    position: relative;
    aspect-ratio: 16 / 9;
    background: var(--cs-gray-100);
    overflow: hidden;
}

.cs-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--cs-transition-slow);
}

.cs-card:hover .cs-card__image {
    transform: scale(1.05);
}

.cs-card__image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--cs-gray-400);
}

.cs-card__kpi-badge {
    position: absolute;
    bottom: 0.75rem;
    left: 0.75rem;
    padding: 0.375rem 0.75rem;
    background: rgba(30, 27, 75, 0.9);
    backdrop-filter: blur(4px);
    color: var(--cs-white);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: var(--cs-radius);
}

.cs-card__content {
    padding: 1.25rem;
}

.cs-card__client {
    min-height: 2rem;
    margin-bottom: 0.5rem;
}

.cs-card__client-logo {
    max-width: 100px;
    max-height: 28px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.cs-card__client-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--cs-gray-700);
}

.cs-card__client-anon {
    display: inline-flex;
    padding: 0.25rem 0.625rem;
    background: var(--cs-gray-100);
    border-radius: var(--cs-radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--cs-gray-600);
}

.cs-card__title {
    margin: 0 0 0.375rem;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--cs-gray-900);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cs-card__date {
    margin: 0 0 0.75rem;
    font-size: 0.8125rem;
    color: var(--cs-gray-500);
}

.cs-card__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 1rem;
}

.cs-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--cs-primary);
    transition: gap var(--cs-transition);
}

.cs-card:hover .cs-card__cta {
    gap: 0.625rem;
}

/* ============================================
   ARCHIVE - NO RESULTS
============================================ */
.cs-no-results {
    padding: 4rem 2rem;
    text-align: center;
}

.cs-no-results__icon {
    margin-bottom: 1.5rem;
    color: var(--cs-gray-400);
}

.cs-no-results__title {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
    color: var(--cs-gray-700);
}

.cs-no-results__text {
    margin: 0 0 1.5rem;
    color: var(--cs-gray-500);
}

.cs-empty-state {
    padding: 4rem 2rem;
    text-align: center;
    color: var(--cs-gray-500);
}

/* ============================================
   ARCHIVE - CTA SECTION
============================================ */
.cs-cta-section {
    padding: 4rem 0;
    background: var(--cs-white);
}

.cs-cta-box {
    max-width: 640px;
    margin: 0 auto;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--cs-dark) 0%, var(--cs-dark-alt) 100%);
    border-radius: var(--cs-radius-2xl);
    text-align: center;
    color: var(--cs-white);
}

.cs-cta-box__title {
    margin: 0 0 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.cs-cta-box__text {
    margin: 0 0 1.5rem;
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   SINGLE - BREADCRUMB
============================================ */
.cs-breadcrumb {
    padding: 1rem 0;
    background: var(--cs-gray-50);
    border-bottom: 1px solid var(--cs-gray-200);
}

.cs-breadcrumb__list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 0.8125rem;
}

.cs-breadcrumb__list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cs-breadcrumb__list li:not(:last-child)::after {
    content: '/';
    color: var(--cs-gray-400);
}

.cs-breadcrumb__list a {
    color: var(--cs-gray-600);
    text-decoration: none;
}

.cs-breadcrumb__list a:hover {
    color: var(--cs-primary);
}

.cs-breadcrumb__list li[aria-current="page"] {
    color: var(--cs-gray-500);
}

/* ============================================
   SINGLE - HERO
============================================ */
.cs-single-hero {
    padding: 3rem 0 4rem;
    background: linear-gradient(180deg, var(--cs-gray-50) 0%, var(--cs-white) 100%);
}

.cs-single-hero__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .cs-single-hero__grid {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.cs-single-hero__client {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.cs-single-hero__client-logo {
    max-width: 120px;
    max-height: 40px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.cs-single-hero__client-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--cs-gray-600);
}

.cs-single-hero__client-anon {
    display: inline-flex;
    padding: 0.375rem 0.875rem;
    background: var(--cs-gray-100);
    border-radius: var(--cs-radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--cs-gray-600);
}

.cs-single-hero__title {
    margin: 0 0 1rem;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--cs-gray-900);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.cs-single-hero__summary {
    margin: 0 0 1.5rem;
    font-size: 1.125rem;
    color: var(--cs-gray-600);
    line-height: 1.7;
}

.cs-single-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.cs-single-hero__meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--cs-gray-600);
}

.cs-single-hero__meta-item svg {
    color: var(--cs-gray-400);
}

.cs-single-hero__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.cs-single-hero__image {
    position: relative;
    border-radius: var(--cs-radius-xl);
    overflow: hidden;
    box-shadow: var(--cs-shadow-xl);
}

.cs-single-hero__cover {
    width: 100%;
    height: auto;
    display: block;
}

.cs-single-hero__cover-type {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--cs-gray-600);
    border-radius: var(--cs-radius-sm);
}

/* ============================================
   SINGLE - KPI HIGHLIGHT
============================================ */
.cs-kpi-highlight {
    padding: 0;
    margin-top: -2rem;
    position: relative;
    z-index: 10;
}

.cs-kpi-highlight__card {
    max-width: 480px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, var(--cs-primary) 0%, var(--cs-secondary) 100%);
    border-radius: var(--cs-radius-xl);
    text-align: center;
    color: var(--cs-white);
    box-shadow: var(--cs-shadow-xl);
}

.cs-kpi-highlight__label {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.9;
}

.cs-kpi-highlight__value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
}

/* ============================================
   SINGLE - SECTIONS
============================================ */
.cs-section {
    padding: 4rem 0;
}

.cs-section:nth-child(even) {
    background: var(--cs-gray-50);
}

.cs-section__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.cs-section__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, var(--cs-primary) 0%, var(--cs-secondary) 100%);
    border-radius: var(--cs-radius);
    color: var(--cs-white);
}

.cs-section__title {
    margin: 0;
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--cs-gray-900);
}

.cs-section__title--center {
    text-align: center;
    margin-bottom: 2rem;
}

.cs-section__content {
    max-width: 720px;
}

.cs-section__content p {
    margin: 0;
    font-size: 1rem;
    color: var(--cs-gray-700);
    line-height: 1.8;
}

.cs-section__content--summary {
    margin-bottom: 2rem;
}

/* ============================================
   SINGLE - KPIs GRID
============================================ */
.cs-kpis-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (min-width: 768px) {
    .cs-kpis-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

.cs-kpi-card {
    position: relative;
    padding: 1.5rem;
    background: var(--cs-white);
    border: 1px solid var(--cs-gray-200);
    border-radius: var(--cs-radius-lg);
    text-align: center;
}

.cs-kpi-card--primary {
    background: linear-gradient(135deg, var(--cs-dark) 0%, var(--cs-dark-alt) 100%);
    border: none;
    color: var(--cs-white);
    grid-column: span 2;
}

@media (min-width: 768px) {
    .cs-kpi-card--primary {
        grid-column: span 1;
    }
}

.cs-kpi-card__priority-badge {
    position: absolute;
    top: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.25rem 0.625rem;
    background: var(--cs-accent);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 9999px;
    color: var(--cs-white);
}

.cs-kpi-card__value {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--cs-primary);
}

.cs-kpi-card--primary .cs-kpi-card__value {
    color: var(--cs-white);
    font-size: 2rem;
}

.cs-kpi-card__label {
    display: block;
    font-size: 0.875rem;
    color: var(--cs-gray-600);
}

.cs-kpi-card--primary .cs-kpi-card__label {
    color: rgba(255, 255, 255, 0.8);
}

.cs-kpi-card__note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--cs-gray-200);
    font-size: 0.75rem;
    color: var(--cs-gray-500);
}

.cs-kpi-card--primary .cs-kpi-card__note {
    border-color: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   SINGLE - INSIGHTS
============================================ */
.cs-insights-list {
    display: grid;
    gap: 1rem;
}

@media (min-width: 768px) {
    .cs-insights-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

.cs-insight-card {
    padding: 1.25rem;
    background: var(--cs-white);
    border: 1px solid var(--cs-gray-200);
    border-radius: var(--cs-radius-lg);
    border-left: 3px solid var(--cs-primary);
}

.cs-insight-card__category {
    display: inline-flex;
    margin-bottom: 0.625rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--cs-radius-sm);
    background: var(--cs-gray-100);
    color: var(--cs-gray-600);
}

.cs-insight-card__category--creative {
    background: rgba(139, 92, 246, 0.1);
    color: var(--cs-secondary);
}

.cs-insight-card__category--audience {
    background: rgba(99, 102, 241, 0.1);
    color: var(--cs-primary);
}

.cs-insight-card__category--channel {
    background: rgba(16, 185, 129, 0.1);
    color: var(--cs-success);
}

.cs-insight-card__category--measurement {
    background: rgba(245, 158, 11, 0.1);
    color: var(--cs-warning);
}

.cs-insight-card__text {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--cs-gray-700);
    line-height: 1.6;
}

/* ============================================
   SINGLE - PLATFORMS
============================================ */
.cs-platforms-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.cs-platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 2rem;
    background: var(--cs-white);
    border: 1px solid var(--cs-gray-200);
    border-radius: var(--cs-radius-lg);
    min-width: 140px;
}

.cs-platform-item__logo {
    max-width: 80px;
    max-height: 40px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.cs-platform-item__placeholder {
    color: var(--cs-gray-400);
}

.cs-platform-item__name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--cs-gray-700);
}

/* ============================================
   SINGLE - CREATIVES
============================================ */
.cs-creatives-gallery {
    display: grid;
    gap: 1.5rem;
}

.cs-creatives-gallery--grid {
    grid-template-columns: repeat(2, 1fr);
}

.cs-creatives-gallery--side-by-side {
    grid-template-columns: repeat(2, 1fr);
}

.cs-creatives-gallery--carousel {
    grid-template-columns: 1fr;
}

.cs-creative-item {
    margin: 0;
}

.cs-creative-item__image {
    width: 100%;
    height: auto;
    border-radius: var(--cs-radius-lg);
    box-shadow: var(--cs-shadow-md);
}

.cs-creative-item__caption {
    margin-top: 0.75rem;
    font-size: 0.8125rem;
    color: var(--cs-gray-500);
    text-align: center;
}

/* ============================================
   SINGLE - CTA
============================================ */
.cs-section--cta {
    background: var(--cs-white);
}

.cs-cta-box--single {
    max-width: 720px;
}

/* ============================================
   SINGLE - RELATED
============================================ */
.cs-section--related {
    background: var(--cs-gray-50);
}

.cs-related-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .cs-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .cs-related-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.cs-related-card {
    background: var(--cs-white);
    border-radius: var(--cs-radius-lg);
    overflow: hidden;
    box-shadow: var(--cs-shadow);
    transition: all var(--cs-transition);
}

.cs-related-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--cs-shadow-lg);
}

.cs-related-card__link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.cs-related-card__image {
    position: relative;
    aspect-ratio: 16 / 9;
    background: var(--cs-gray-100);
}

.cs-related-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cs-related-card__kpi {
    position: absolute;
    bottom: 0.5rem;
    left: 0.5rem;
    padding: 0.25rem 0.5rem;
    background: rgba(30, 27, 75, 0.9);
    backdrop-filter: blur(4px);
    color: var(--cs-white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--cs-radius-sm);
}

.cs-related-card__content {
    padding: 1rem;
}

.cs-related-card__client {
    min-height: 1.5rem;
    margin-bottom: 0.375rem;
}

.cs-related-card__logo {
    max-width: 60px;
    max-height: 20px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.cs-related-card__client span {
    font-size: 0.75rem;
    color: var(--cs-gray-500);
}

.cs-related-card__title {
    margin: 0 0 0.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--cs-gray-900);
    line-height: 1.4;
}

.cs-related-card__date {
    font-size: 0.75rem;
    color: var(--cs-gray-500);
}

/* ============================================
   SINGLE - BACK NAV
============================================ */
.cs-back-nav {
    padding: 2rem 0;
    background: var(--cs-white);
    border-top: 1px solid var(--cs-gray-200);
}

.cs-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--cs-gray-600);
    text-decoration: none;
    transition: color var(--cs-transition);
}

.cs-back-link:hover {
    color: var(--cs-primary);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
============================================ */
@media (max-width: 639px) {
    .cs-hero {
        padding: 3rem 0 2rem;
    }
    
    .cs-section {
        padding: 2.5rem 0;
    }
    
    .cs-kpi-highlight__card {
        margin: 0 1rem;
    }
    
    .cs-creatives-gallery--grid,
    .cs-creatives-gallery--side-by-side {
        grid-template-columns: 1fr;
    }
}