/* ── Reset & Base ─────────────────────────────────────────── */
        *{margin:0;padding:0;box-sizing:border-box}
        body{font-family:'Google Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:#fff;color:#242424;min-height:100vh;display:flex;flex-direction:column;line-height:1.5}

        /* ── Header ───────────────────────────────────────────────── */
        .header{padding:16px 40px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #dadce0}
        .logo{font-size:22px;font-weight:600;color:#0F6CBD;text-decoration:none}
        .logo span{color:#616161;font-weight:400;font-size:14px;margin-left:6px}
        .header-links a{color:#616161;text-decoration:none;font-size:13px;margin-left:18px;transition:color .2s}
        .header-links a:hover{color:#0F6CBD}

        /* ── Main Container ───────────────────────────────────────── */
        .main-container{flex:1;display:flex;flex-direction:column;align-items:center;padding:30px clamp(16px,3vw,40px);max-width:1800px;margin:0 auto;width:100%}

        /* ── Step Indicator ────────────────────────────────────────── */
        .steps-indicator{display:flex;align-items:center;gap:0;margin-bottom:32px;width:100%;max-width:520px}
        .step-dot{width:32px;height:32px;border-radius:50%;background:#e8eaed;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:500;color:#616161;transition:all .3s;flex-shrink:0}
        .step-dot.active{background:#0F6CBD;color:#fff}
        .step-dot.done{background:#34a853;color:#fff}
        .step-line{flex:1;height:2px;background:#e8eaed;transition:background .3s}
        .step-line.active{background:#0F6CBD}
        .step-line.done{background:#34a853}

        /* ── Cards / Sections ─────────────────────────────────────── */
        .step-section{display:none;width:100%;animation:fadeIn .35s ease}
        /* Keep the input steps at a comfortable reading width... */
        #step-1,#step-2{max-width:760px;margin:0 auto}
        /* ...but let the generated results use most of the viewport. */
        #step-3{max-width:1800px;margin:0 auto}
        /* One use case per row: cards are content-rich and their diagrams
           need the full width. */
        #usecases-container{display:grid;gap:16px;grid-template-columns:1fr}
        /* Grid gap handles spacing; drop the stacked-layout margin.
           min-width:0 lets a wide diagram scroll inside its own box instead of
           pushing the page sideways (grid items default to min-width:auto). */
        #usecases-container > .usecase-card{margin-bottom:0;min-width:0}
        .step-section.active{display:block}
        @keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

        .card{background:#fff;border:1px solid #dadce0;border-radius:12px;padding:28px;margin-bottom:20px}
        .card h2{font-size:20px;font-weight:500;margin-bottom:4px}
        .card .subtitle{font-size:14px;color:#616161;margin-bottom:20px}

        /* ── Input ────────────────────────────────────────────────── */
        .input-wrapper{position:relative;display:flex;align-items:center;background:#fff;border:1px solid #dfe1e5;border-radius:24px;height:48px;box-shadow:0 2px 5px 1px rgba(64,60,67,.12);transition:box-shadow .2s}
        .input-wrapper:hover,.input-wrapper.focused{box-shadow:0 2px 8px 1px rgba(64,60,67,.2);border-color:transparent}
        .domain-input{flex:1;border:none;outline:none;font-size:16px;padding:0 18px;height:100%;border-radius:24px;background:transparent}
        .validation-icon{width:36px;height:36px;margin-right:6px;display:flex;align-items:center;justify-content:center;font-size:18px}
        .language-select-row{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:13px;color:#616161}
        .language-select{font-size:13px;padding:6px 10px;border:1px solid #dadce0;border-radius:6px;background:#fff;color:#242424;cursor:pointer}
        .language-select:hover{border-color:#0F6CBD}
        .btn-identify{background:#0F6CBD;color:#fff;border:none;border-radius:0 24px 24px 0;padding:0 20px;font-size:14px;font-weight:600;cursor:pointer;height:100%;white-space:nowrap;transition:background .2s}
        .btn-identify:hover{background:#1557b0}
        .btn-identify:disabled{background:#94bef7;cursor:not-allowed}

        /* ── Buttons ──────────────────────────────────────────────── */
        .btn{display:inline-flex;align-items:center;gap:6px;padding:10px 28px;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;border:none;transition:all .2s}
        .btn-primary{background:#0F6CBD;color:#fff}
        .btn-primary:hover{background:#1557b0;box-shadow:0 2px 6px rgba(26,115,232,.3)}
        .btn-primary:disabled{background:#c4d7f2;cursor:not-allowed;box-shadow:none}
        .btn-secondary{background:#fff;color:#0F6CBD;border:1px solid #dadce0}
        .btn-secondary:hover{background:#f8f9fa}
        .btn-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}

        /* ── Company Info Card (Step 1 Result) ────────────────────── */
        .company-card{border-left:4px solid #0F6CBD;padding:18px 22px;background:#f8f9fa;border-radius:0 8px 8px 0;margin:16px 0}
        .company-card h3{font-size:16px;font-weight:500;margin-bottom:6px}
        .company-card .industry-badge{display:inline-block;background:#e8f0fe;color:#0F6CBD;padding:3px 12px;border-radius:12px;font-size:12px;font-weight:500;margin-top:6px}

        /* ── Technology Grid (Step 2) ─────────────────────────────── */
        .tech-category{margin-bottom:22px}
        .tech-category h3{font-size:15px;font-weight:500;color:#242424;margin-bottom:10px;padding-bottom:6px;border-bottom:1px solid #e8eaed}
        .tech-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px}
        .tech-chip{display:flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid #dadce0;border-radius:8px;cursor:pointer;font-size:13px;transition:all .2s;user-select:none}
        .tech-chip:hover{border-color:#0F6CBD;background:#f0f6ff}
        .tech-chip.selected{border-color:#0F6CBD;background:#e8f0fe;color:#0F6CBD;font-weight:500}
        .tech-chip.likely{border-color:#F7630C;background:#fef7e0}
        .tech-chip.likely.selected{border-color:#0F6CBD;background:#e8f0fe;color:#0F6CBD}
        .tech-checkbox{width:16px;height:16px;border-radius:3px;border:2px solid #dadce0;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}
        .tech-chip.selected .tech-checkbox{background:#0F6CBD;border-color:#0F6CBD;color:#fff}

        /* ── Free Text ────────────────────────────────────────────── */
        .free-text{width:100%;min-height:100px;border:1px solid #dadce0;border-radius:8px;padding:12px;font-size:14px;font-family:inherit;resize:vertical;outline:none;transition:border-color .2s}
        .free-text:focus{border-color:#0F6CBD}

        /* ── Use Case Results (Step 3) ────────────────────────────── */
        .usecase-card{border:1px solid #dadce0;border-radius:12px;padding:24px;margin-bottom:16px;transition:box-shadow .2s}
        .usecase-card:hover{box-shadow:0 2px 12px rgba(0,0,0,.08)}
        .uc-header{display:flex;align-items:flex-start;gap:14px;margin-bottom:12px}
        .uc-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
        .uc-icon.money{background:#e6f4ea;color:#137333}
        .uc-icon.time{background:#e8f0fe;color:#0F6CBD}
        .uc-icon.risk{background:#fce8e6;color:#c5221f}
        .uc-title{font-size:17px;font-weight:500}
        .uc-badge{display:inline-block;padding:2px 10px;border-radius:10px;font-size:11px;font-weight:500;margin-top:4px}
        .uc-badge.money{background:#e6f4ea;color:#137333}
        .uc-badge.time{background:#e8f0fe;color:#0F6CBD}
        .uc-badge.risk{background:#fce8e6;color:#c5221f}
        .uc-description{font-size:14px;color:#424242;line-height:1.6;margin-bottom:12px}
        .uc-detail{font-size:13px;color:#616161;margin-bottom:6px}
        .uc-detail strong{color:#242424}
        .uc-impact{background:#f8f9fa;border-radius:8px;padding:12px;margin-top:10px;font-size:13px;line-height:1.7}
        .uc-leverages{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}
        .uc-leverages .tag{background:#e8eaed;padding:2px 8px;border-radius:4px;font-size:11px;color:#424242}

        /* ── Spinner / Loading ────────────────────────────────────── */
        .spinner{display:inline-block;width:18px;height:18px;border:2px solid #dadce0;border-top-color:#0F6CBD;border-radius:50%;animation:spin .8s linear infinite}
        @keyframes spin{to{transform:rotate(360deg)}}
        .loading-state{display:flex;align-items:center;gap:10px;padding:20px;color:#616161;font-size:14px}

        /* ── Diagram Tabs & Display ───────────────────────────────── */
        .diagram-section{margin-top:16px;border-top:1px solid #e8eaed;padding-top:14px}
        .diagram-tabs{display:flex;gap:0;margin-bottom:12px}
        .diagram-tab{flex:1;padding:10px 16px;font-size:13px;font-weight:500;cursor:pointer;border:1px solid #dadce0;background:#fff;color:#616161;text-align:center;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:6px}
        .diagram-tab:first-child{border-radius:8px 0 0 8px}
        .diagram-tab:last-child{border-radius:0 8px 8px 0}
        .diagram-tab:not(:first-child){border-left:none}
        .diagram-tab:hover{background:#f8f9fa;color:#242424}
        .diagram-tab.active{background:#0F6CBD;color:#fff;border-color:#0F6CBD}
        .diagram-tab.active + .diagram-tab{border-left-color:#0F6CBD}
        .diagram-tab .tab-icon{font-size:14px}
        .diagram-display{background:#1e1e1e;color:#d4d4d4;border-radius:8px;padding:16px;font-family:'Cascadia Code','Fira Code','Courier New',monospace;font-size:14px;line-height:1.45;white-space:pre;overflow-x:auto;position:relative;min-height:60px;max-height:80vh;overflow-y:auto}
        /* Diagram viewer toolbar (sits inside the diagram box, top right) */
        .diagram-tools{position:absolute;top:8px;right:8px;display:inline-flex;gap:4px;opacity:0;transition:opacity .2s;z-index:2}
        .diagram-display:hover .diagram-tools,.diagram-tools:focus-within{opacity:1}
        .diagram-tool{font-family:inherit;font-size:11px;line-height:1;min-width:28px;padding:5px 9px;border:1px solid rgba(255,255,255,.25);border-radius:4px;background:rgba(255,255,255,.12);color:#d4d4d4;cursor:pointer}
        .diagram-tool:hover{background:rgba(255,255,255,.25);color:#fff}
        /* Fullscreen diagram overlay */
        .diagram-overlay{display:none;position:fixed;inset:0;z-index:9999;background:rgba(32,33,36,.92);padding:16px}
        .diagram-overlay.show{display:flex;flex-direction:column}
        .diagram-overlay-bar{display:flex;align-items:center;gap:12px;color:#fff;font-size:14px;padding:4px 4px 12px}
        .diagram-overlay-title{font-weight:500}
        .diagram-overlay-actions{display:inline-flex;gap:6px;margin-left:auto}
        .diagram-overlay-actions button{font-family:inherit;font-size:13px;line-height:1;min-width:34px;padding:7px 11px;border:1px solid rgba(255,255,255,.35);border-radius:4px;background:transparent;color:#fff;cursor:pointer}
        .diagram-overlay-actions button:hover{background:rgba(255,255,255,.15)}
        .diagram-overlay-pre{flex:1;margin:0;max-height:none;overflow:auto}
        .diagram-display.loading{display:flex;align-items:center;justify-content:center;min-height:80px;white-space:normal}
        .diagram-workflow{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:8px;font-size:11px;color:#616161}
        .diagram-workflow .wf-step{background:#e8f0fe;color:#0F6CBD;padding:2px 10px;border-radius:10px;font-weight:500}
        .diagram-workflow .wf-arrow{color:#dadce0}

        /* ── Privacy Banner ───────────────────────────────────────── */
        .privacy-banner{background:#f8f9fa;border:1px solid #e8eaed;border-radius:8px;padding:12px 18px;font-size:12px;color:#616161;display:flex;align-items:center;gap:10px;margin-bottom:20px}
        .privacy-banner .icon{font-size:18px}

        /* ── Footer ───────────────────────────────────────────────── */
        .footer{padding:16px 40px;border-top:1px solid #dadce0;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#70757a;flex-wrap:wrap;gap:8px}
        .footer a{color:#70757a;text-decoration:none}
        .footer a:hover{color:#242424}

        /* ── Responsive ───────────────────────────────────────────── */
        @media(max-width:640px){
            .header{padding:12px 16px}
            .main-container{padding:16px}
            .card{padding:18px}
            .tech-grid{grid-template-columns:1fr 1fr}
            .btn-actions{flex-direction:column}
            .btn{width:100%;justify-content:center}
        }