:root {
            --bg-primary: #1A1A1A;
            --bg-secondary: #2F2F2F;
            --text-primary: #F9F9F9;
            --text-secondary: #B8B8B8;
            --accent-color: #e000a8;
            --sonare-blue: #6B8CFF;
            --sonare-yellow: #FFD93D;
            --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --card-radius: 12px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .case-study-hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--sonare-blue) 0%, var(--sonare-yellow) 100%);
            position: relative;
            overflow: hidden;
        }

        .case-study-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.3);
            z-index: 1;
        }

        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-text {
            color: white;
        }

        .hero-text h1 {
            font-size: clamp(2.5rem, 6vw, 4rem);
            font-weight: 700;
            margin-bottom: 1rem;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .hero-text .subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .project-details {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            margin-top: 2rem;
        }

        .detail-item {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 8px;
            backdrop-filter: blur(10px);
        }

        .detail-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            opacity: 0.8;
            margin-bottom: 0.5rem;
        }

        .detail-value {
            font-weight: 600;
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .poster-showcase {
            position: relative;
            transform: rotate(-5deg);
            transition: var(--transition);
        }

        .poster-showcase:hover {
            transform: rotate(0deg) scale(1.05);
        }

        .poster-image {
            width: 100%;
            max-width: 400px;
            border-radius: 15px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
        }

        .section {
            padding: 6rem 2rem;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-header h2 {
            font-size: clamp(2rem, 4vw, 3rem);
            margin-bottom: 1rem;
            background: linear-gradient(135deg, var(--sonare-blue), var(--sonare-yellow));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        .research-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-bottom: 4rem;
        }

        .research-card {
            background: var(--bg-secondary);
            border-radius: var(--card-radius);
            padding: 2rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }

        .research-card:hover {
            border-color: var(--sonare-blue);
            transform: translateY(-5px);
        }

        .research-card h3 {
            color: var(--sonare-yellow);
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }

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

        .research-card ul {
            color: var(--text-secondary);
            margin-top: 1rem;
            padding-left: 1.5rem;
        }

        .research-card li {
            margin-bottom: 0.5rem;
        }

        .design-process {
            background: var(--bg-secondary);
            border-radius: var(--card-radius);
            padding: 3rem;
            margin: 3rem 0;
            border-left: 4px solid var(--sonare-blue);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .process-step {
            text-align: center;
            padding: 1.5rem;
            background: rgba(107, 140, 255, 0.1);
            border-radius: var(--card-radius);
        }

        .step-number {
            background: var(--sonare-blue);
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-weight: 700;
        }

        .mockups-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }

        .mockup-card {
            background: var(--bg-secondary);
            border-radius: var(--card-radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .mockup-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }

        .mockup-image {
            width: 100%;
            height: 200px;
            background: linear-gradient(135deg, var(--sonare-blue), var(--sonare-yellow));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
        }

        .mockup-info {
            padding: 1.5rem;
        }

        .mockup-info h4 {
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .mockup-info p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .color-palette {
            display: flex;
            gap: 2rem;
            justify-content: center;
            margin: 2rem 0;
        }

        .color-item {
            text-align: center;
        }

        .color-swatch {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            margin: 0 auto 1rem;
            border: 3px solid rgba(255, 255, 255, 0.2);
        }

        .color-blue {
            background: var(--sonare-blue);
        }

        .color-yellow {
            background: var(--sonare-yellow);
        }

        .color-info h4 {
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .color-info p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .outcomes {
            background: linear-gradient(135deg, rgba(107, 140, 255, 0.1), rgba(255, 217, 61, 0.1));
            border-radius: var(--card-radius);
            padding: 3rem;
            text-align: center;
        }

        .outcomes h3 {
            color: var(--text-primary);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .outcomes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .outcome-item {
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--card-radius);
        }

        .outcome-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--sonare-yellow);
            margin-bottom: 0.5rem;
        }

        .outcome-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-primary);
            text-decoration: none;
            font-size: 1.1rem;
            padding: 1rem 2rem;
            border: 2px solid var(--sonare-blue);
            border-radius: var(--card-radius);
            transition: var(--transition);
            margin-top: 3rem;
        }

        .back-link:hover {
            background: var(--sonare-blue);
            color: white;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .project-details {
                grid-template-columns: 1fr;
            }

            .poster-showcase {
                transform: none;
                margin-top: 2rem;
            }

            .color-palette {
                flex-direction: column;
                align-items: center;
                gap: 1rem;
            }
        }



        /* ========================================
   BRAND APPLICATIONS SECTION
   ======================================== */
.applications-section {
    background: var(--bg-secondary);
}

.application-category {
    margin-bottom: 4rem;
}

.category-title {
    color: var(--sonare-blue);
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

.application-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.merchandise-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.application-item {
    background: var(--bg-primary);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.application-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--sonare-blue);
}

.application-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    background: linear-gradient(135deg, var(--sonare-blue), var(--sonare-yellow));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.mockup-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.application-item:hover .mockup-img {
    transform: scale(1.05);
}

.application-info {
    padding: 1.5rem;
}

.application-info h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.application-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ========================================
   BRAND SYSTEM SECTION
   ======================================== */
.brand-system-section {
    background: rgba(107, 140, 255, 0.05);
}

.brand-system-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.system-item {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: var(--card-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.system-item h4 {
    color: var(--sonare-yellow);
    margin-bottom: 1.5rem;
    text-align: center;
}

.logo-showcase,
.typography-showcase,
.color-applications,
.icon-showcase {
    display: grid;
    gap: 1rem;
}

.logo-item,
.color-app,
.icon-item {
    background: rgba(107, 140, 255, 0.1);
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.type-sample.heading {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.type-sample.subheading {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--sonare-blue);
    margin-bottom: 0.5rem;
}

.type-sample.body {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.color-app.primary {
    background: linear-gradient(135deg, var(--sonare-blue), var(--sonare-yellow));
    color: white;
}

.color-app.secondary {
    background: var(--sonare-blue);
    color: white;
}

.color-app.neutral {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ========================================
   ENHANCED BRAND SYSTEM SECTION STYLES
   ======================================== */

.brand-system-section {
    background: rgba(107, 140, 255, 0.05);
}

.system-category-title {
    color: var(--sonare-blue);
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.system-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 3rem;
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   LOGO SYSTEM STYLES
   ======================================== */
.logo-system {
    margin-bottom: 5rem;
}

.logo-variants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.logo-variant {
    background: var(--bg-primary);
    border-radius: var(--card-radius);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.logo-variant:hover {
    border-color: var(--sonare-blue);
    transform: translateY(-2px);
}

.logo-container {
    background: #FBFBFA;
    border-radius: 8px;
    padding: 0.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-image {
    max-width: 100%;
    max-height: 150px;
    height: auto;
    object-fit: contain;
}

.logo-info h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.logo-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.usage-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.usage-tag {
    background: rgba(107, 140, 255, 0.1);
    color: var(--sonare-blue);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(107, 140, 255, 0.3);
}

/* ========================================
   COLOR SYSTEM STYLES
   ======================================== */
.color-system {
    margin-bottom: 5rem;
}

.color-system-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.color-group {
    background: var(--bg-secondary);
    border-radius: var(--card-radius);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.color-group h4 {
    color: var(--sonare-yellow);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.color-swatches {
    display: grid;
    gap: 1.5rem;
}

.color-swatch-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.color-swatch {
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.large-swatch {
    width: 60px;
    height: 60px;
}

.medium-swatch {
    width: 40px;
    height: 40px;
}

.barcelona-blue {
    background: var(--sonare-blue);
}

.sunshine-yellow {
    background: var(--sonare-yellow);
}

.color-details h5 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.color-hex {
    font-family: 'Courier New', monospace;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.color-description {
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.4;
}

.color-mini-details {
    display: flex;
    flex-direction: column;
}

.color-name {
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.gradient-colors {
    grid-column: span 2;
}

.gradient-showcase {
    text-align: center;
}

.gradient-swatch {
    height: 80px;
    border-radius: var(--card-radius);
    margin-bottom: 1rem;
}

.primary-gradient {
    background: linear-gradient(135deg, var(--sonare-blue), var(--sonare-yellow));
}

.gradient-description {
    color: var(--text-secondary);
    line-height: 1.6;
    font-style: italic;
}

/* ========================================
   TYPOGRAPHY SYSTEM STYLES
   ======================================== */
.typography-system {
    margin-bottom: 5rem;
}

.typography-hierarchy {
    background: var(--bg-secondary);
    border-radius: var(--card-radius);
    padding: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.type-sample {
    padding: 2rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.type-sample:last-child {
    border-bottom: none;
}

.type-example {
    margin-bottom: 1rem;
}

.display-text .type-example {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
}

.heading-text .type-example {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--sonare-blue);
    font-family: 'Poppins', sans-serif;
}

.subheading-text .type-example {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--sonare-yellow);
    font-family: 'Poppins', sans-serif;
}

.body-text .type-example {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.6;
    font-family: 'Poppins', sans-serif;
}

.caption-text .type-example {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: 'Poppins', sans-serif;
}

.type-specs {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.type-specs span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 0.3rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
}

.type-name {
    color: var(--sonare-blue) !important;
    font-weight: 600 !important;
}

/* ========================================
   USAGE GUIDELINES STYLES
   ======================================== */
.usage-guidelines {
    margin-bottom: 5rem;
}

.guidelines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.guideline-item {
    background: var(--bg-secondary);
    border-radius: var(--card-radius);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.guideline-item h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.guideline-item:first-child h4 {
    color: #4CAF50;
}

.guideline-item:last-child h4 {
    color: #F44336;
}

.guideline-item ul {
    list-style: none;
    padding: 0;
}

.guideline-item li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
}

.guideline-item:first-child li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4CAF50;
}

.guideline-item:last-child li::before {
    content: '✗';
    position: absolute;
    left: 0;
    color: #F44336;
}

/* ========================================
   BRAND ATTRIBUTES STYLES
   ======================================== */
.brand-attributes {
    margin-bottom: 3rem;
}

.attributes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.attribute-item {
    background: var(--bg-secondary);
    border-radius: var(--card-radius);
    padding: 2rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.attribute-item:hover {
    border-color: var(--sonare-blue);
    transform: translateY(-2px);
}

.attribute-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

.attribute-item h4 {
    color: var(--sonare-yellow);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.attribute-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
    .logo-variants-grid {
        grid-template-columns: 1fr;
    }
    
    .color-system-grid {
        grid-template-columns: 1fr;
    }
    
    .gradient-colors {
        grid-column: span 1;
    }
    
    .guidelines-grid {
        grid-template-columns: 1fr;
    }
    
    .attributes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .type-specs {
        gap: 1rem;
    }
    
    .display-text .type-example {
        font-size: 2rem;
    }
    
    .heading-text .type-example {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .attributes-grid {
        grid-template-columns: 1fr;
    }
    
    .logo-container {
        min-height: 100px;
        padding: 1.5rem;
    }
    
    .logo-image {
        max-height: 60px;
    }
    
    .color-group {
        padding: 1.5rem;
    }
    
    .typography-hierarchy {
        padding: 2rem;
    }
}