#portfolio-index .hero-section {
            min-height: 90vh;
            display: flex;
            align-items: center;
            padding-top: 80px;
            background: linear-gradient(135deg, #000 0%, #0a1628 100%);
        }
        
        #portfolio-index .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            background: rgba(0, 255, 255, 0.1);
            border: 1px solid rgba(0, 255, 255, 0.3);
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 500;
            color: #0ff;
            margin-bottom: 1.5rem;
        }
        
        #portfolio-index .hero-title {
            font-size: clamp(2.5rem, 6vw, 4rem);
            font-weight: 700;
            line-height: 1.1;
            margin-bottom: 1.5rem;
        }
        
        #portfolio-index .hero-subtitle {
            font-size: 1.25rem;
            font-weight: 300;
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            margin-bottom: 2rem;
        }
        
        #portfolio-index .btn-primary-custom {
            background: #0ff;
            color: #000;
            border: none;
            padding: 0.875rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        #portfolio-index .btn-primary-custom:hover {
            background: #fff;
            color: #000;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
        }
        
        #portfolio-index .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 500;
            font-size: 1rem;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        #portfolio-index .btn-outline-custom:hover {
            border-color: #0ff;
            color: #0ff;
        }
        
        #portfolio-index .stat-card {
            text-align: center;
            padding: 1.5rem;
        }
        
        #portfolio-index .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: #0ff;
            line-height: 1;
        }
        
        #portfolio-index .stat-label {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 0.5rem;
        }
        
        #portfolio-index .industry-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1rem;
            padding: 1.5rem;
            text-align: center;
            transition: all 0.3s ease;
        }
        
        #portfolio-index .industry-card:hover {
            border-color: rgba(0, 255, 255, 0.3);
            transform: translateY(-5px);
        }
        
        #portfolio-index .industry-card i {
            font-size: 2rem;
            color: #0ff;
            margin-bottom: 0.75rem;
        }
        
        #portfolio-index .industry-card h5 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        
        #portfolio-index .industry-card p {
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.5);
            margin: 0;
        }
        
        #portfolio-index .skill-tag {
            display: inline-block;
            padding: 0.4rem 0.875rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            font-size: 0.8125rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            margin: 0.25rem;
            transition: all 0.3s ease;
        }
        
        #portfolio-index .skill-tag:hover {
            border-color: #0ff;
            color: #0ff;
        }
        
        #portfolio-index .skill-tag.highlight {
            background: linear-gradient(135deg, rgba(0, 255, 255, 0.2), rgba(0, 100, 150, 0.2));
            border-color: rgba(0, 255, 255, 0.4);
            color: #0ff;
        }
        


        #portfolio-case-study .project-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1rem;
            overflow: hidden;
            transition: all 0.4s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        #portfolio-index .project-card:hover {
            border-color: rgba(0, 255, 255, 0.4);
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }
        
        #portfolio-index .project-image {
            position: relative;
            padding-top: 60%;
            background: linear-gradient(135deg, #0a1628 0%, #1a2a40 100%);
            overflow: hidden;
        }
        
        #portfolio-index .project-image img {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 100%;
            height: 100%;
            object-fit: contain;
            transition: transform 0.4s ease;
        }
        
        #portfolio-index .project-card:hover .project-image img {
            transform: translate(-50%, -50%) scale(1.05);
        }

        #portfolio-index .project-image-screenshot img {
            max-width: 95%;
            max-height: 85%;
            border-radius: 0.5rem;
            box-shadow: 0 8px 30px rgba(0,0,0,0.4);
        }
        
        #portfolio-index .project-badge {
            position: absolute;
            top: 1rem;
            left: 1rem;
            padding: 0.3rem 0.75rem;
            background: rgba(0, 0, 0, 0.7);
            border: 1px solid rgba(0, 255, 255, 0.5);
            border-radius: 50px;
            font-size: 0.6875rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: #0ff;
        }
        
        #portfolio-index .project-badge.ai-badge {
            background: linear-gradient(135deg, #0ff, #0099cc);
            color: #000;
            border: none;
        }
        
        #portfolio-index .project-content {
            padding: 1.5rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        
        #portfolio-index .project-category {
            font-size: 0.6875rem;
            font-weight: 600;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: #0ff;
            margin-bottom: 0.5rem;
        }
        
        #portfolio-index .project-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            color: #fff;
        }
        
        #portfolio-index .project-description {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 1rem;
            flex-grow: 1;
        }
        
        #portfolio-index .project-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.375rem;
            margin-bottom: 1rem;
        }
        
        #portfolio-index .project-tag {
            padding: 0.2rem 0.5rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 4px;
            font-size: 0.6875rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.5);
            margin: 0;
        }
        
        #portfolio-index .project-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
            font-weight: 600;
            color: #0ff;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        #portfolio-index .project-link:hover {
            color: #fff;
            gap: 0.75rem;
        }
        
        #portfolio-index .project-card.coming-soon {
            border-style: dashed;
        }
        
        #portfolio-index .project-card.coming-soon .project-image {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        #portfolio-index .coming-soon-icon {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 3rem;
            color: rgba(0, 255, 255, 0.3);
        }
        
        #portfolio-index .experience-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1rem;
            padding: 1.5rem;
            margin-bottom: 1rem;
            transition: all 0.3s ease;
        }
        
        #portfolio-index .experience-card:hover {
            border-color: rgba(0, 255, 255, 0.3);
        }
        
        #portfolio-index .experience-title {
            font-size: 1.125rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.25rem;
        }
        
        #portfolio-index .experience-company {
            font-size: 0.9375rem;
            color: rgba(255, 255, 255, 0.5);
        }
        
        #portfolio-index .experience-date {
            font-size: 0.75rem;
            color: #0ff;
            background: rgba(0, 255, 255, 0.1);
            padding: 0.25rem 0.75rem;
            border-radius: 50px;
        }
        
        #portfolio-index .experience-description {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            margin: 0.75rem 0 0;
        }
        
        #portfolio-index .education-item {
            display: flex;
            gap: 1rem;
            padding: 1.25rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        #portfolio-index .education-item:last-child {
            border-bottom: none;
        }
        
        #portfolio-index .education-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 255, 255, 0.1);
            border-radius: 0.75rem;
            font-size: 1.25rem;
            color: #0ff;
            flex-shrink: 0;
        }
        
        #portfolio-index .education-degree {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin: 0;
        }
        
        #portfolio-index .education-school {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.5);
            margin: 0;
        }
        
        #portfolio-index .contact-section {
            background: linear-gradient(135deg, #0a1628 0%, #000 100%);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        #portfolio-index .contact-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.875rem 1.5rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            color: #fff;
            text-decoration: none;
            font-size: 0.9375rem;
            font-weight: 500;
            transition: all 0.3s ease;
            margin: 0.25rem;
        }
        
        #portfolio-index .contact-link:hover {
            background: #0ff;
            color: #000;
            border-color: #0ff;
            transform: translateY(-3px);
        }
        
        #portfolio-index .section-label {
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: #0ff;
            margin-bottom: 0.5rem;
        }
        
        #portfolio-index .section-title {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 1rem;
        }

        #portfolio-index .skill-category-title {
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.4);
            margin-bottom: 0.75rem;
            margin-top: 1.5rem;
        }
        
        #portfolio-index .skill-category-title:first-child {
            margin-top: 0;
        }
        #portfolio-index .experience-clients {
            list-style: none;
            padding-left: 0;
            margin-top: 0.5rem;
            margin-bottom: 0;
        }
        #portfolio-index .experience-clients li {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            padding: 0.25rem 0;
            padding-left: 1rem;
            position: relative;
        }
        #portfolio-index .experience-clients li::before {
            content: "•";
            color: #00e5cc;
            position: absolute;
            left: 0;
        }
        #portfolio-index .experience-clients li strong {
            color: rgba(255, 255, 255, 0.9);
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .animate-fade-in {
            animation: fadeInUp 0.6s ease-out forwards;
        }
        
        .delay-1 { animation-delay: 0.1s; opacity: 0; }
        .delay-2 { animation-delay: 0.2s; opacity: 0; }
        .delay-3 { animation-delay: 0.3s; opacity: 0; }
        .delay-4 { animation-delay: 0.4s; opacity: 0; }


          :root {
            --color-bg: #000;
            --color-bg-alt: #0a1628;
            --color-cyan: #0ff;
            --color-text: #fff;
            --color-text-muted: rgba(255,255,255,0.6);
            --color-border: rgba(255,255,255,0.1);
        }
        
        body {
            background: var(--color-bg);
            color: var(--color-text);
            font-family: 'Inter', sans-serif;
        }

        /* ── Material Symbols base ── */
        .material-symbols-rounded {
            font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
            vertical-align: middle;
            line-height: 1;
        }
        .icon-inline {
            font-size: 1.125em;
            margin-right: 0.35em;
            vertical-align: -0.15em;
        }
        .icon-cyan {
            color: var(--color-cyan);
        }
        .icon-sm {
            font-size: 1em;
        }
        .icon-lg {
            font-size: 1.5rem;
        }
        .icon-flow {
            font-size: 1.5rem;
            color: var(--color-cyan);
            margin-bottom: 0.75rem;
            display: block;
        }
        
        /* ── Navigation ── */
        .navbar {
            background: transparent;
            transition: all 0.3s ease;
        }
        .navbar.scrolled {
            background: rgba(0,0,0,0.95);
            backdrop-filter: blur(10px);
        }
        .navbar-brand img {
            height: 32px;
            margin-right: 0.5rem;
        }
        .nav-link {
            color: rgba(255,255,255,0.8) !important;
            font-weight: 500;
        }
        .nav-link:hover {
            color: var(--color-cyan) !important;
        }
        
        /* ── 01 HERO ── */



        .case-hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
            border-bottom: 1px solid var(--color-border);
        }
        .case-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1rem;
            background: rgba(0,255,255,0.1);
            border: 1px solid rgba(0,255,255,0.3);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-cyan);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
        }
        .case-badge + .case-badge {
            margin-left: 0.5rem;
        }
        .case-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 700;
            line-height: 1.1;
            margin-bottom: 1rem;
        }
        .case-subtitle {
            font-size: 1.125rem;
            color: var(--color-text-muted);
            max-width: 600px;
            line-height: 1.6;
        }
        .case-hero-image {
            max-width: 100%;
            height: 50%;
            border-radius: 1rem;
            box-shadow: 0 20px 60px rgba(0,0,0,0.5);
        }

        /* Hero image matches left column height */
        .case-hero-media{
        height: 100%;
        border-radius: 16px;     /* optional */
        overflow: hidden;        /* keeps rounded corners */
        }

        /* Make image fill and crop nicely instead of stretching */
        .case-hero-media img{
        width: 100%;
        height: 100%;
        object-fit: cover;       /* or 'contain' if you prefer no cropping */
        object-position: top;    /* common for UI screenshots */
        }

        /* On small screens let image go natural */
        @media (max-width: 991.98px){
        .case-hero-media{ height: auto; }
        .case-hero-media img{ height: auto; }
        }        

        /* Impact banner inside hero */
        .impact-banner {
            margin-top: 2rem;
            padding: 1.25rem 1.75rem;
            background: rgba(0,255,255,0.06);
            border: 1px solid rgba(0,255,255,0.25);
            border-radius: 0.75rem;
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .impact-banner .impact-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-cyan);
            line-height: 1;
            white-space: nowrap;
        }
        .impact-banner .impact-text {
            font-size: 0.9375rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }
        
        /* ── Metadata Sidebar ── */
        .case-meta {
            position: sticky;
            top: 100px;
        }
        .meta-item {
            margin-bottom: 1.5rem;
        }
        .meta-label {
            font-size: 0.6875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--color-cyan);
            margin-bottom: 0.25rem;
        }
        .meta-value {
            font-size: 0.9375rem;
            color: var(--color-text);
        }
        
        /* ── Section Headers ── */
        .section-label {
            font-size: 0.6875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.15em;
            color: var(--color-cyan);
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .section-content {
            color: var(--color-text-muted);
            font-size: 1rem;
            line-height: 1.8;
        }
        
        /* ── Content Sections ── */
        .case-section {
            padding: 5rem 0;
            border-bottom: 1px solid var(--color-border);
        }
        .case-section:last-of-type {
            border-bottom: none;
        }
        
        /* ── Image Display ── */
        .case-image {
            width: 100%;
            border-radius: 0.75rem;
            margin: 2rem 0;
            border: 1px solid var(--color-border);
        }
        .image-caption {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
            text-align: center;
            margin-top: 0.75rem;
        }
        
        /* ── Highlight Box ── */
        .highlight-box {
            background: linear-gradient(135deg, rgba(0,255,255,0.05), rgba(10,22,40,0.8));
            border: 1px solid rgba(0,255,255,0.2);
            border-radius: 1rem;
            padding: 2rem;
            margin: 2rem 0;
        }
        .highlight-box h3 {
            color: var(--color-cyan);
            font-size: 1.25rem;
            margin-bottom: 1rem;
        }
        
        /* ── Insight / Challenge Cards ── */
        .insight-card {
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
            padding: 1.25rem;
            margin-bottom: 1rem;
            height: 100%;
        }
        .insight-card strong {
            color: var(--color-text);
        }

        /* ── Sprint Timeline ── */
        .sprint-timeline { position: relative; padding-left: 0; }
        .sprint-item { display: flex; gap: 1.5rem; margin-bottom: 2rem; position: relative; }
        .sprint-item::before { content: ''; position: absolute; left: 28px; top: 56px; bottom: -2rem; width: 2px; background: rgba(255,255,255,0.08); }
        .sprint-item:last-child::before { display: none; }
        .sprint-dot { flex-shrink: 0; width: 56px; height: 56px; border-radius: 50%; background: rgba(0,212,170,0.12); border: 2px solid rgba(0,212,170,0.3); display: flex; align-items: center; justify-content: center; color: #00d4aa; font-weight: 700; font-size: 0.85rem; z-index: 1; }
        .sprint-content { flex: 1; padding: 1.25rem; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 12px; }
        .sprint-content h5 { color: #fff; margin-bottom: 0.25rem; font-size: 1rem; }
        .sprint-content .sprint-date { color: rgba(0,212,170,0.8); font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
        .sprint-content p { color: rgba(255,255,255,0.6); font-size: 0.875rem; margin-bottom: 0.5rem; }
        .sprint-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
        .sprint-tag { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: 20px; padding: 0.2rem 0.7rem; font-size: 0.72rem; color: rgba(255,255,255,0.6); }

        /* ── E2E Flow ── */
        .e2e-flow { display: flex; align-items: flex-start; gap: 0; overflow-x: auto; padding-bottom: 1rem; }
        .e2e-step { flex: 0 0 160px; text-align: center; position: relative; }
        .e2e-step + .e2e-step::before { content: ''; position: absolute; left: 0; top: 28px; width: 100%; height: 2px; background: rgba(0,212,170,0.25); z-index: 0; }
        .e2e-bubble { width: 56px; height: 56px; border-radius: 50%; background: rgba(0,212,170,0.12); border: 2px solid rgba(0,212,170,0.4); display: flex; align-items: center; justify-content: center; margin: 0 auto 0.75rem; position: relative; z-index: 1; }
        .e2e-bubble span { color: #00d4aa; font-size: 1.25rem; }
        .e2e-step-label { font-size: 0.7rem; color: rgba(0,212,170,0.7); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.3rem; }
        .e2e-step-title { font-size: 0.85rem; color: #fff; font-weight: 600; margin-bottom: 0.3rem; line-height: 1.3; }
        .e2e-step-desc { font-size: 0.75rem; color: rgba(255,255,255,0.5); line-height: 1.4; }
        .e2e-arrow { flex: 0 0 32px; display: flex; align-items: flex-start; justify-content: center; padding-top: 16px; color: rgba(0,212,170,0.4); font-size: 1.5rem; }

        /* ── Module grid ── */
        .module-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
        .module-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; padding: 1.25rem; }
        .module-card .module-num { font-size: 0.7rem; font-weight: 700; color: rgba(0,212,170,0.7); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.4rem; }
        .module-card h5 { color: #fff; font-size: 0.95rem; margin-bottom: 0.5rem; }
        .module-card ul { color: rgba(255,255,255,0.55); font-size: 0.8rem; padding-left: 1rem; margin: 0; }
        .module-card ul li { margin-bottom: 0.2rem; }

        /* ── Landing evolution ── */
        .landing-evolution { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; }
        .landing-card { position: relative; }
        .landing-card .landing-label { font-size: 0.75rem; color: rgba(0,212,170,0.8); font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
        .landing-card .landing-note { font-size: 0.8rem; color: rgba(255,255,255,0.5); margin-top: 0.5rem; }

        /* ── 03 KEY DECISIONS TABLE ── */
        .decisions-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            margin: 2rem 0;
        }
        .decisions-table thead th {
            font-size: 0.6875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--color-cyan);
            padding: 1rem 1.25rem;
            border-bottom: 1px solid rgba(0,255,255,0.2);
            text-align: left;
        }
        .decisions-table tbody td {
            padding: 1rem 1.25rem;
            font-size: 0.9375rem;
            color: var(--color-text-muted);
            border-bottom: 1px solid var(--color-border);
            vertical-align: top;
        }
        .decisions-table tbody td:first-child {
            color: var(--color-text);
            font-weight: 600;
            white-space: nowrap;
        }
        .decisions-table tbody tr:last-child td {
            border-bottom: none;
        }
        @media (max-width: 767px) {
            .decisions-table, .decisions-table thead, .decisions-table tbody,
            .decisions-table th, .decisions-table td, .decisions-table tr {
                display: block;
            }
            .decisions-table thead { display: none; }
            .decisions-table tbody td {
                padding: 0.5rem 0;
                border-bottom: none;
            }
            .decisions-table tbody td:first-child {
                padding-top: 1rem;
                color: var(--color-cyan);
                font-size: 0.8125rem;
                text-transform: uppercase;
                letter-spacing: 0.05em;
            }
            .decisions-table tbody td:last-child {
                padding-bottom: 1rem;
                border-bottom: 1px solid var(--color-border);
            }
        }

        /* ── DECISION MEMO ── */
        .decision-memo {
            background: linear-gradient(135deg, rgba(0,255,255,0.04), rgba(10,22,40,0.6));
            border-left: 3px solid var(--color-cyan);
            border-radius: 0 1rem 1rem 0;
            padding: 2rem 2.5rem;
            margin: 2.5rem 0;
        }
        .decision-memo .memo-label {
            font-size: 0.6875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--color-cyan);
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .decision-memo h4 {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 1rem;
        }
        .decision-memo .memo-body {
            font-size: 0.9375rem;
            color: var(--color-text-muted);
            line-height: 1.75;
        }
        .decision-memo .memo-option {
            padding: 1rem 1.25rem;
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
            margin-bottom: 0.75rem;
        }
        .decision-memo .memo-option strong {
            color: var(--color-text);
        }
        .decision-memo .memo-recommendation {
            margin-top: 1rem;
            padding: 1rem 1.25rem;
            background: rgba(0,255,255,0.06);
            border: 1px solid rgba(0,255,255,0.2);
            border-radius: 0.75rem;
            font-weight: 500;
            color: var(--color-text);
        }
        .decision-memo .memo-recommendation i {
            color: var(--color-cyan);
            margin-right: 0.5rem;
        }

        /* ── RESEARCH SNAPSHOT ── */
        .research-snapshot {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .snapshot-card {
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
            padding: 1.25rem;
            transition: border-color 0.3s ease;
        }
        .snapshot-card:hover {
            border-color: rgba(0,255,255,0.3);
        }
        .snapshot-card .snap-method {
            font-size: 0.6875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--color-cyan);
            margin-bottom: 0.25rem;
        }
        .snapshot-card .snap-sample {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
            margin-bottom: 0.75rem;
        }
        .snapshot-card .snap-finding {
            font-size: 0.9375rem;
            color: var(--color-text);
            line-height: 1.5;
        }

        /* ── PHASE ARCHITECTURE ── */
        .phase-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .phase-card {
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--color-border);
            border-radius: 1rem;
            padding: 1.75rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .phase-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-cyan);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .phase-card:hover {
            border-color: rgba(0,255,255,0.3);
            transform: translateY(-4px);
        }
        .phase-card:hover::before {
            opacity: 1;
        }
        .phase-card .phase-number {
            font-size: 0.6875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--color-cyan);
            margin-bottom: 0.5rem;
        }
        .phase-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.75rem;
        }
        .phase-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .phase-card li {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            padding: 0.375rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .phase-card li:last-child {
            border-bottom: none;
        }

        /* ── CAPABILITY CARDS ── */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.25rem;
            margin: 2rem 0;
        }
        .capability-card {
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--color-border);
            border-radius: 1rem;
            padding: 1.5rem;
            transition: all 0.3s ease;
        }
        .capability-card:hover {
            border-color: rgba(0,255,255,0.3);
        }
        .capability-card .cap-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0,255,255,0.15);
            color: var(--color-cyan);
            font-size: 0.75rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .capability-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.5rem;
        }
        .capability-card p {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ── AGENTIC FLOW DIAGRAM ── */
        .flow-diagram {
            display: flex;
            align-items: stretch;
            gap: 0;
            margin: 2.5rem 0;
            overflow-x: auto;
            padding-bottom: 1rem;
        }
        .flow-node {
            flex: 1;
            min-width: 180px;
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--color-border);
            border-radius: 1rem;
            padding: 1.5rem;
            text-align: center;
            position: relative;
        }
        .flow-node.active {
            border-color: rgba(0,255,255,0.3);
            background: rgba(0,255,255,0.04);
        }
        .flow-connector {
            display: flex;
            align-items: center;
            padding: 0 0.25rem;
            color: rgba(0,255,255,0.4);
            font-size: 1.25rem;
            flex-shrink: 0;
        }
        .flow-connector .material-symbols-rounded {
            font-size: inherit;
        }
        .flow-node .flow-icon {
            font-size: 1.5rem;
            color: var(--color-cyan);
            margin-bottom: 0.75rem;
        }
        .flow-node .flow-icon .material-symbols-rounded {
            font-size: inherit;
        }
        .flow-node h5 {
            font-size: 0.875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--color-text);
            margin-bottom: 0.5rem;
        }
        .flow-node ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .flow-node li {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
            padding: 0.25rem 0;
        }
        .flow-branch {
            margin-top: 1.5rem;
            text-align: center;
        }
        .flow-branch-node {
            display: inline-block;
            background: rgba(0,255,255,0.06);
            border: 1px solid rgba(0,255,255,0.2);
            border-radius: 0.75rem;
            padding: 1rem 1.5rem;
        }
        .flow-branch-connector {
            color: rgba(0,255,255,0.4);
            font-size: 1.25rem;
            margin: 0.5rem 0;
        }
        @media (max-width: 767px) {
            .flow-diagram {
                flex-direction: column;
                align-items: stretch;
            }
            .flow-connector {
                justify-content: center;
                padding: 0.25rem 0;
                transform: rotate(90deg);
            }
        }

        /* ── METRIC CARDS ── */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .metric-card {
            text-align: center;
            padding: 2rem 1.5rem;
            background: rgba(0,255,255,0.04);
            border: 1px solid rgba(0,255,255,0.2);
            border-radius: 1rem;
        }
        .metric-card .metric-label {
            font-size: 0.6875rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--color-cyan);
            margin-bottom: 1rem;
        }
        .metric-card .metric-before-after {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
        }
        .metric-card .metric-val {
            font-size: 0.875rem;
            color: var(--color-text-muted);
        }
        .metric-card .metric-arrow {
            color: var(--color-cyan);
            font-size: 0.875rem;
        }
        .metric-card .metric-val-after {
            font-size: 0.875rem;
            color: var(--color-text);
            font-weight: 600;
        }
        .metric-card .metric-impact {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-cyan);
            line-height: 1;
        }
        
        /* ── Process Steps ── */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .process-step {
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--color-border);
            border-radius: 1rem;
            padding: 1.5rem;
            transition: all 0.3s ease;
        }
        .process-step:hover {
            border-color: rgba(0,255,255,0.3);
            transform: translateY(-4px);
        }
        .process-step h4 {
            color: var(--color-cyan);
            font-size: 0.875rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
        }
        .process-step ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .process-step li {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            padding: 0.375rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .process-step li:last-child {
            border-bottom: none;
        }

        /* ── Dashboard Feature List ── */
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 1.5rem 0;
        }
        .feature-list li {
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            line-height: 1.6;
        }
        .feature-list li:last-child {
            border-bottom: none;
        }
        .feature-list li strong {
            color: var(--color-text);
        }

        /* ── Deliverables ── */
        .deliverables-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .deliverable-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 1rem;
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
        }
        .deliverable-item i {
            color: var(--color-cyan);
            margin-top: 0.25rem;
            flex-shrink: 0;
        }
        .deliverable-item strong {
            display: block;
            color: var(--color-text);
            font-size: 0.9375rem;
            margin-bottom: 0.25rem;
        }
        .deliverable-item span {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
        }

        /* ── Learnings ── */
        .learnings-list {
            counter-reset: learning;
        }
        .learning-item {
            display: flex;
            gap: 1rem;
            padding: 1.25rem 0;
            border-bottom: 1px solid var(--color-border);
        }
        .learning-item:last-child {
            border-bottom: none;
        }
        .learning-item::before {
            counter-increment: learning;
            content: counter(learning, decimal-leading-zero);
            font-size: 1.5rem;
            font-weight: 700;
            color: rgba(0,255,255,0.3);
            flex-shrink: 0;
            line-height: 1.4;
        }

        /* ── Navigation ── */
        .case-nav {
            padding: 3rem 0;
            border-top: 1px solid var(--color-border);
        }
        .nav-link-project {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 1rem 1.5rem;
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
            color: var(--color-text);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .nav-link-project:not(.prev) {
            justify-content: flex-end;
        }
        .nav-link-project:hover {
            border-color: var(--color-cyan);
            color: var(--color-cyan);
            transform: translateX(4px);
        }
        .nav-link-project.prev:hover {
            transform: translateX(-4px);
        }
        .nav-link-project span {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        
        /* ── Footer ── */
        .case-footer {
            padding: 3rem 0;
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
        }
        .footer-cta {
            text-align: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .footer-cta h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        .footer-cta p {
            color: var(--color-text-muted);
            margin-bottom: 1.5rem;
        }
        .btn-primary-custom {
            background: var(--color-cyan);
            color: #000;
            border: none;
            padding: 0.875rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background: #fff;
            color: #000;
            transform: translateY(-2px);
        }
        
        /* ── Back to Top ── */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 48px;
            height: 48px;
            background: var(--color-cyan);
            color: #000;
            border: none;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(0,255,255,0.3);
        }

        /* ── Case study counter ── */
        .case-counter {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin-top: 1rem;
        }
        .case-counter span {
            color: var(--color-cyan);
            font-weight: 700;
        }
        
        /* ── Responsive ── */
        @media (max-width: 991px) {
            .case-meta {
                position: static;
                display: flex;
                flex-wrap: wrap;
                gap: 1.5rem;
                margin-bottom: 2rem;
                padding-bottom: 2rem;
                border-bottom: 1px solid var(--color-border);
            }
            .meta-item {
                margin-bottom: 0;
            }
        }
        @media (max-width: 767px) {
            .impact-banner {
                flex-direction: column;
                text-align: center;
            }
        }
        /* 404 Error Page */
        .error-container { text-align: center; padding: 2rem; padding-top: 8rem; }
        .error-code { font-size: 6rem; font-weight: 800; color: rgba(0,255,255,0.2); line-height: 1; }
        .error-title { font-size: 1.5rem; font-weight: 700; color: #fff; margin: 1rem 0; }
        .error-message { color: rgba(255,255,255,0.5); margin-bottom: 2rem; }
        .btn-home {
            background: #0ff; color: #000; padding: 0.875rem 2rem; border-radius: 50px;
            text-decoration: none; font-weight: 600; transition: all 0.3s ease; display: inline-block;
        }
        .btn-home:hover { background: #fff; color: #000; transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,255,255,0.3); }

        /* Accessibility Case Study — unique layout classes */
        .a11y-context-grid {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 3rem;
            align-items: start;
        }
        .a11y-issues-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .a11y-bg-alt {
            background: var(--color-bg-alt);
        }
        .a11y-critical-card {
            border-left: 4px solid #ff4444;
            padding: 1.5rem;
            background: rgba(255, 68, 68, 0.05);
            border-radius: 4px;
            height: 100%;
        }
        .a11y-severity-card {
            border-radius: 8px;
            padding: 1.5rem;
            height: 100%;
        }
        .a11y-severity-critical {
            border: 1px solid #ff4444;
            background: rgba(255, 68, 68, 0.08);
        }
        .a11y-severity-major {
            border: 1px solid #ffaa00;
            background: rgba(255, 170, 0, 0.08);
        }
        .a11y-severity-minor {
            border: 1px solid #ffee00;
            background: rgba(255, 238, 0, 0.08);
        }
        @media (max-width: 767px) {
            .a11y-context-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ═══════════════════════════════════════════
           RESPONSIVE — Mobile first
           375px  → max-width: 575px
           768px  → min-width: 576px / max-width: 767px
           1024px → min-width: 768px / max-width: 1199px
           1440px → min-width: 1200px
        ═══════════════════════════════════════════ */

        /* ── Prevent horizontal scroll globally ── */
        body { overflow-x: hidden; }

        /* ────────────────────────────────────────────
           MOBILE  ≤ 575px
        ──────────────────────────────────────────── */
        @media (max-width: 575px) {

            /* Hero — case study pages */
            .case-hero {
                padding: 90px 0 40px;
            }
            .case-title {
                font-size: 1.75rem;
            }
            .case-subtitle {
                font-size: 1rem;
            }
            .case-badge {
                font-size: 0.6875rem;
                padding: 0.3rem 0.75rem;
            }

            /* Impact banner */
            .impact-banner {
                padding: 1rem 1.25rem;
            }
            .impact-banner .impact-number {
                font-size: 1.5rem;
            }

            /* Sections */
            .case-section {
                padding: 2.5rem 0;
            }

            /* Highlight box */
            .highlight-box {
                padding: 1.25rem;
            }
            .highlight-box h3 {
                font-size: 1.1rem;
            }

            /* Decision memo */
            .decision-memo {
                padding: 1.25rem 1.25rem;
            }
            .decision-memo h4 {
                font-size: 1rem;
            }

            /* Metrics grid — 2 columns on mobile */
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .metric-card {
                padding: 1.25rem 0.75rem;
            }
            .metric-card .metric-impact {
                font-size: 1.35rem;
            }

            /* Phase cards — single column */
            .phase-cards {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            /* Capability grid — single column */
            .capability-grid {
                grid-template-columns: 1fr;
            }

            /* Research snapshot — single column */
            .research-snapshot {
                grid-template-columns: 1fr;
            }

            /* Deliverables — single column */
            .deliverables-grid {
                grid-template-columns: 1fr;
            }

            /* Process steps — single column */
            .process-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            /* Case nav — tighter, project name smaller */
            .case-nav {
                padding: 1.5rem 0;
            }
            .nav-link-project {
                padding: 0.75rem 0.875rem;
                gap: 0.5rem;
                border-radius: 0.5rem;
            }
            .nav-link-project p.mb-0 {
                font-size: 0.75rem;
                line-height: 1.3;
            }
            .nav-link-project > span.material-symbols-rounded {
                font-size: 1.25rem;
            }

            /* Footer CTA */
            .case-footer {
                padding: 2rem 0;
            }
            .footer-cta h3 {
                font-size: 1.25rem;
            }

            /* Section headers */
            .section-label {
                font-size: 0.625rem;
            }

            /* Index hero */
            #portfolio-index .hero-section {
                min-height: auto;
                padding: 90px 0 50px;
            }
            #portfolio-index .hero-title {
                font-size: clamp(1.875rem, 8vw, 2.5rem);
            }
            #portfolio-index .hero-subtitle {
                font-size: 0.9375rem;
                line-height: 1.6;
            }
            #portfolio-index .stat-number {
                font-size: 2rem;
            }
            #portfolio-index .stat-label {
                font-size: 0.75rem;
            }
            #portfolio-index .stat-card {
                padding: 1rem 0.5rem;
            }
            #portfolio-index .btn-primary-custom,
            #portfolio-index .btn-outline-custom {
                padding: 0.75rem 1.25rem;
                font-size: 0.9375rem;
            }

            /* Industry cards — 2 per row already via col-6, just tighten */
            #portfolio-index .industry-card {
                padding: 1rem;
            }
            #portfolio-index .industry-card i {
                font-size: 1.5rem;
            }
            #portfolio-index .industry-card h5 {
                font-size: 0.875rem;
            }
            #portfolio-index .industry-card p {
                font-size: 0.75rem;
            }

            /* Project cards on index */
            #portfolio-index .project-image {
                padding-top: 50%;
            }
            #portfolio-index .project-content {
                padding: 1.25rem;
            }
            #portfolio-index .project-title {
                font-size: 1.0625rem;
            }

            /* Skills section */
            #portfolio-index .skill-category-title {
                margin-top: 1.25rem;
            }

            /* Section titles on index */
            #portfolio-index .section-title {
                font-size: clamp(1.5rem, 6vw, 2rem);
            }

            /* Contact links — stack vertically */
            #portfolio-index .contact-link {
                width: 100%;
                justify-content: center;
                margin: 0.25rem 0;
            }
        }

        /* ────────────────────────────────────────────
           TABLET PORTRAIT  576px – 767px
        ──────────────────────────────────────────── */
        @media (min-width: 576px) and (max-width: 767px) {

            .case-hero {
                padding: 110px 0 55px;
            }
            .case-title {
                font-size: 2.25rem;
            }
            .case-section {
                padding: 3.5rem 0;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .phase-cards {
                grid-template-columns: 1fr;
            }
            .deliverables-grid {
                grid-template-columns: 1fr;
            }
            #portfolio-index .hero-subtitle {
                font-size: 1.0625rem;
            }
            #portfolio-index .stat-number {
                font-size: 2.25rem;
            }
        }

        /* ────────────────────────────────────────────
           TABLET LANDSCAPE  768px – 1199px
        ──────────────────────────────────────────── */
        @media (min-width: 768px) and (max-width: 1199px) {

            .case-hero {
                padding: 120px 0 65px;
            }
            .case-section {
                padding: 4rem 0;
            }

            /* Nav project cards — comfortable at this size */
            .nav-link-project {
                padding: 1rem 1.25rem;
            }

            /* Metrics — 3 per row at tablet landscape */
            .metrics-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            #portfolio-index .hero-section {
                padding-top: 90px;
            }
        }

        /* ────────────────────────────────────────────
           LAPTOP  ≥ 1200px
        ──────────────────────────────────────────── */
        @media (min-width: 1200px) {

            /* Ensure case study content column stays readable */
            .case-section .col-lg-8 {
                max-width: 780px;
            }

            /* Wider containers breathe more */
            .case-hero {
                padding: 140px 0 80px;
            }

            /* Large screen — bigger metric numbers */
            .metric-card .metric-impact {
                font-size: 2rem;
            }
        }