/* Generador de QR — estilos de la app (extraídos del single-file).
   El nav del sitio lo pone /apps/_shell/. */
/* ============================================================
           TOKENS — palette (≤5), one family, panel/motion recipes.
           Old live-site values kept as comments = escape hatch.
           ============================================================ */
        :root {
            --bg:        #161719;   /* was #242525 */
            --bg-elev:   #1d1f22;
            --panel:     rgba(28, 30, 33, 0.66);
            --panel-solid:#1d1f22;
            --stroke:    rgba(255, 255, 255, 0.09);
            --stroke-2:  rgba(255, 255, 255, 0.14);
            --txt:       #eef1ea;   /* was #FFFFFF */
            --muted:     #9aa1a0;   /* was #B0B0B0 */
            --lime:      #a8d300;   /* brand */
            --lime-2:    #caf24a;
            --cyan:      #00e5ff;   /* brand, was #00FFFF */
            --danger:    #ff5d73;   /* was red / #FF0000 */

            --radius:    18px;
            --radius-sm: 11px;
            --ring:      0 0 0 3px rgba(168, 211, 0, 0.28);
            --shadow:    0 30px 80px -32px rgba(0, 0, 0, 0.85);
            --glow:      0 0 44px -10px rgba(168, 211, 0, 0.55);
            --ease:      cubic-bezier(0.22, 1, 0.36, 1);
            --font:      'Ubuntu', system-ui, -apple-system, sans-serif;
            --mono:      'Ubuntu Mono', ui-monospace, monospace;

            /* fluid type scale */
            --fs-eyebrow: clamp(0.66rem, 0.6rem + 0.3vw, 0.78rem);
            --fs-body:    clamp(0.94rem, 0.9rem + 0.2vw, 1rem);
            --fs-h1:      clamp(2rem, 1.3rem + 3.4vw, 3.5rem);
            --fs-h2:      clamp(1.35rem, 1.1rem + 1vw, 1.7rem);
        }

        * { box-sizing: border-box; }
        html { -webkit-text-size-adjust: 100%; }
        body {
            margin: 0;
            min-height: 100vh;
            padding: 0 0 clamp(48px, 8vh, 96px);
            font-family: var(--font);
            font-size: var(--fs-body);
            line-height: 1.6;
            color: var(--txt);
            background:
                radial-gradient(1100px 620px at 50% -8%, rgba(168, 211, 0, 0.10), transparent 60%),
                radial-gradient(900px 620px at 88% 12%, rgba(0, 229, 255, 0.07), transparent 55%),
                var(--bg);
            overflow-x: hidden;
        }

        /* ---- Protagonist: living QR-module field (behind everything) ---- */
        #bg {
            position: fixed;
            inset: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            pointer-events: none;
        }
        /* Filmic grain */
        .grain {
            position: fixed;
            inset: 0;
            z-index: 1;
            pointer-events: none;
            opacity: 0.05;
            mix-blend-mode: soft-light;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
        }

        .wrap {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 640px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ---- Hero ---- */
        .hero {
            text-align: center;
            padding: clamp(48px, 9vh, 96px) 0 22px;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--mono);
            font-size: var(--fs-eyebrow);
            letter-spacing: 0.26em;
            text-transform: uppercase;
            color: var(--muted);
            padding: 7px 14px;
            border: 1px solid var(--stroke);
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.02);
            backdrop-filter: blur(6px);
        }
        .eyebrow::before {
            content: "";
            width: 7px; height: 7px;
            border-radius: 50%;
            background: var(--lime);
            box-shadow: 0 0 10px var(--lime);
            animation: pulse 2.4s var(--ease) infinite;
        }
        @keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.45; transform: scale(0.7); } }
        .hero h1 {
            margin: 20px 0 0;
            font-size: var(--fs-h1);
            font-weight: 700;
            line-height: 1.04;
            letter-spacing: -0.02em;
            background: linear-gradient(180deg, #ffffff 0%, #d6dccb 62%, var(--lime) 190%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero h1 .accent {
            background: linear-gradient(100deg, var(--lime), var(--cyan));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero .tagline {
            margin: 16px auto 0;
            max-width: 42ch;
            color: var(--muted);
            font-size: clamp(0.9rem, 0.85rem + 0.3vw, 1.05rem);
        }

        /* ---- Segmented tabs ---- */
        .tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
            margin: 30px auto 0;
            padding: 8px;
            border: 1px solid var(--stroke);
            border-radius: 999px;
            background: var(--panel);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }
        .tab-btn {
            position: relative;
            border: 0;
            border-radius: 999px;
            padding: 9px 16px;
            font-family: var(--font);
            font-size: 0.86rem;
            font-weight: 500;
            color: var(--muted);
            background: transparent;
            cursor: pointer;
            transition: color 0.25s var(--ease), background 0.25s var(--ease), transform 0.2s var(--ease);
        }
        .tab-btn:hover { color: var(--txt); background: rgba(255, 255, 255, 0.05); }
        .tab-btn.active {
            color: #10130a;
            background: linear-gradient(120deg, var(--lime), var(--lime-2));
            box-shadow: var(--glow);
        }
        .tab-panel { display: none; }
        .tab-panel.active { display: block; animation: rise 0.5s var(--ease) both; }
        @keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

        /* ---- Generator card (glass, spotlight, sheen) ---- */
        .qr-generator {
            position: relative;
            font-family: var(--font);
            max-width: 500px;
            margin: 26px auto 0;
            padding: clamp(22px, 4vw, 34px);
            border: 1px solid var(--stroke);
            border-radius: var(--radius);
            background: var(--panel);
            backdrop-filter: blur(20px) saturate(1.15);
            -webkit-backdrop-filter: blur(20px) saturate(1.15);
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .qr-generator::before {   /* pointer spotlight */
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.35s var(--ease);
            background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 0%), rgba(168, 211, 0, 0.14), transparent 62%);
        }
        .qr-generator:hover::before { opacity: 1; }
        .qr-generator::after {    /* top hairline */
            content: "";
            position: absolute;
            top: 0; left: 12%; right: 12%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(168, 211, 0, 0.7), transparent);
        }
        .qr-generator > * { position: relative; }
        .qr-generator label { color: var(--txt); }
        .qr-generator h2 {
            margin: 0 0 20px;
            font-size: var(--fs-h2);
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--txt);
        }
        .qr-generator h2::after {
            content: "";
            display: block;
            width: 42px; height: 3px;
            margin-top: 10px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--lime), var(--cyan));
        }

        /* Fields */
        .qr-generator input[type="text"],
        .qr-generator input[type="password"],
        .qr-generator textarea,
        .qr-generator input[type="file"],
        .qr-generator input[type="color"],
        .qr-generator select,
        .qr-generator button {
            width: 100%;
            padding: 13px 15px;
            margin-bottom: 12px;
            box-sizing: border-box;
            font-family: var(--font);
            font-size: 1rem;
            color: var(--txt);
            background: rgba(0, 0, 0, 0.28);
            border: 1px solid var(--stroke-2);
            border-radius: var(--radius-sm);
            transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
        }
        .qr-generator textarea { min-height: 96px; resize: vertical; }
        .qr-generator input:focus,
        .qr-generator textarea:focus,
        .qr-generator select:focus {
            outline: none;
            border-color: var(--lime);
            box-shadow: var(--ring);
            background: rgba(0, 0, 0, 0.4);
        }
        .qr-generator input::placeholder { color: var(--muted); }
        .qr-generator select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%23a8d300'%3E%3Cpath d='M7 10L2 4h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 15px center;
            padding-right: 40px;
            cursor: pointer;
        }

        /* Primary button */
        .qr-generator > button {
            position: relative;
            margin-top: 4px;
            padding: 15px 18px;
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            color: #10130a;
            background: linear-gradient(120deg, var(--lime), var(--lime-2));
            border: 0;
            cursor: pointer;
            overflow: hidden;
            transform: translate(var(--mag-x, 0), var(--mag-y, 0));
            transition: box-shadow 0.25s var(--ease), transform 0.12s var(--ease), filter 0.25s var(--ease);
        }
        .qr-generator > button:hover { box-shadow: var(--glow); filter: brightness(1.05); }
        .qr-generator > button:active { transform: translateY(1px) scale(0.99); }
        .qr-generator > button::after {  /* sheen */
            content: "";
            position: absolute;
            top: 0; left: -60%;
            width: 45%; height: 100%;
            background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
            transform: skewX(-18deg);
            transition: left 0.55s var(--ease);
        }
        .qr-generator > button:hover::after { left: 130%; }

        /* File row + remove */
        .qr-generator .file-input-wrapper {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .qr-generator .file-input-wrapper input[type="file"] {
            flex: 1;
            min-width: 0;
            margin-bottom: 0;
            font-size: 0.85rem;
            color: var(--muted);
            padding: 10px 12px;
        }
        .qr-generator .remove-image {
            width: 46px;
            height: 46px;
            flex: 0 0 auto;
            margin-bottom: 0;
            padding: 0;
            display: grid;
            place-items: center;
            color: var(--muted);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--stroke-2);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.2s var(--ease);
        }
        .qr-generator .remove-image:hover {
            color: #fff;
            background: var(--danger);
            border-color: var(--danger);
        }

        /* QR output */
        .qr-generator .qrcode {
            text-align: center;
            margin-top: 22px;
            position: relative;
        }
        .qr-generator .qrcode:empty { margin-top: 0; }
        .qr-generator .qrcode canvas {
            max-width: 100%;
            height: auto;
            padding: 14px;
            border-radius: var(--radius-sm);
            background: #ffffff;
            box-shadow: 0 18px 50px -16px rgba(0, 0, 0, 0.8);
            animation: pop 0.5s var(--ease) both;
        }
        @keyframes pop { from { opacity: 0; transform: scale(0.94); } to { opacity: 1; transform: none; } }
        .qr-generator .error-message {
            color: var(--danger);
            margin-top: 12px;
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* ---- Customization panel ---- */
        .qr-customization {
            margin-top: 24px;
            padding-top: 22px;
            border-top: 1px solid var(--stroke);
            font-size: 1rem;
        }
        .qr-customization h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.15rem;
            margin: 0 0 6px;
            color: var(--txt);
        }
        .qr-customization h3::before {
            content: "";
            width: 8px; height: 8px;
            border-radius: 2px;
            background: linear-gradient(120deg, var(--lime), var(--cyan));
        }
        .qr-customization label {
            display: block;
            margin-top: 16px;
            font-size: 0.82rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            color: var(--muted);
        }
        .qr-customization input[type="color"] {
            width: 100%;
            height: 44px;
            margin-top: 6px;
            padding: 4px;
            background: rgba(0, 0, 0, 0.28);
            border: 1px solid var(--stroke-2);
            border-radius: var(--radius-sm);
            cursor: pointer;
        }
        .qr-customization select {
            width: 100%;
            height: 46px;
            margin-top: 6px;
            padding: 0 40px 0 14px;
            color: var(--txt);
            background: rgba(0, 0, 0, 0.28);
            border: 1px solid var(--stroke-2);
            border-radius: var(--radius-sm);
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%23a8d300'%3E%3Cpath d='M7 10L2 4h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 15px center;
            cursor: pointer;
        }
        .qr-customization button {
            width: 100%;
            margin-top: 24px;
            padding: 15px 18px;
            font-family: var(--font);
            font-size: 1rem;
            font-weight: 700;
            color: var(--txt);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--lime);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.25s var(--ease);
        }
        .qr-customization button:hover {
            color: #10130a;
            background: linear-gradient(120deg, var(--lime), var(--lime-2));
            box-shadow: var(--glow);
        }
        .qr-customization .overlay-options {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 16px;
            margin-top: 18px;
        }
        .qr-customization .overlay-options label {
            margin: 0;
            text-transform: none;
            letter-spacing: 0;
            font-size: 0.9rem;
            color: var(--txt);
        }
        .qr-customization .overlay-options input[type="checkbox"] {
            width: 18px; height: 18px;
            margin: 0 4px 0 0;
            accent-color: var(--lime);
            cursor: pointer;
        }

        /* Range sliders */
        .qr-customization input[type="range"] {
            -webkit-appearance: none;
            appearance: none;
            width: 100%;
            height: 6px;
            margin-top: 12px;
            border-radius: 6px;
            background: linear-gradient(90deg, var(--lime), rgba(255, 255, 255, 0.12));
            outline: none;
            cursor: pointer;
        }
        .qr-customization input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 20px; height: 20px;
            border-radius: 50%;
            background: var(--lime);
            border: 3px solid var(--bg-elev);
            box-shadow: 0 0 0 1px var(--lime), var(--glow);
            cursor: pointer;
        }
        .qr-customization input[type="range"]::-moz-range-thumb {
            width: 20px; height: 20px;
            border-radius: 50%;
            background: var(--lime);
            border: 3px solid var(--bg-elev);
            cursor: pointer;
        }

        /* ---- Custom cursor (enhancement, fine pointers only) ---- */
        .cursor-dot, .cursor-ring { position: fixed; top: 0; left: 0; z-index: 60; pointer-events: none; border-radius: 50%; opacity: 0; }
        .cursor-dot { width: 6px; height: 6px; background: var(--lime); transform: translate(-50%, -50%); }
        .cursor-ring {
            width: 34px; height: 34px;
            border: 1px solid rgba(168, 211, 0, 0.7);
            transform: translate(-50%, -50%);
            transition: width 0.22s var(--ease), height 0.22s var(--ease), background 0.22s var(--ease), border-color 0.22s var(--ease);
            mix-blend-mode: difference;
        }
        html.cursor-on.cursor-active .cursor-dot,
        html.cursor-on.cursor-active .cursor-ring { opacity: 1; }
        html.cursor-on.cursor-hot .cursor-ring { width: 56px; height: 56px; background: rgba(168, 211, 0, 0.12); }
        @media (pointer: fine) {
            html.cursor-on, html.cursor-on body { cursor: none; }
            html.cursor-on a, html.cursor-on button, html.cursor-on .tab-btn, html.cursor-on label { cursor: none; }
            html.cursor-on input, html.cursor-on textarea { cursor: text; }
        }

        /* ---- Reveal on load ---- */
        .reveal { opacity: 0; transform: translateY(22px); }
        .reveal.in { opacity: 1; transform: none; transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }

        /* ---- Focus + a11y ---- */
        :focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; border-radius: 4px; }
        .skip-link {
            position: absolute; left: -9999px; top: 8px; z-index: 80;
            background: var(--lime); color: #10130a; padding: 10px 16px; border-radius: 8px; font-weight: 700;
        }
        .skip-link:focus { left: 50%; transform: translateX(-50%); }

        /* Backdrop-filter fallback */
        @supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
            .tabs, .qr-generator, .eyebrow { background: var(--panel-solid); }
        }

        /* Reduced motion */
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { animation: none !important; transition: none !important; }
            .reveal { opacity: 1; transform: none; }
            .cursor-dot, .cursor-ring { display: none; }
            html.cursor-on, html.cursor-on body { cursor: auto; }
        }

        @media (max-width: 480px) {
            .qr-generator .file-input-wrapper { flex-direction: column; align-items: stretch; }
            .qr-generator .file-input-wrapper input[type="file"] { width: 100%; }
            .qr-generator .remove-image { width: 100%; height: 44px; }
        }

        /* ============================================================
           MODE SWITCH + QR ART STUDIO
           ============================================================ */
        .mode-switch {
            display: flex; justify-content: center; gap: 8px;
            width: max-content; max-width: 100%;
            margin: 26px auto 0; padding: 6px;
            border: 1px solid var(--stroke); border-radius: 999px;
            background: var(--panel); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
        }
        .mode-btn {
            border: 0; border-radius: 999px; padding: 10px 20px;
            font-family: var(--font); font-weight: 600; font-size: 0.92rem;
            color: var(--muted); background: transparent; cursor: pointer;
            transition: color 0.25s var(--ease), background 0.25s var(--ease);
        }
        .mode-btn:hover { color: var(--txt); }
        .mode-btn.active { color: #10130a; background: linear-gradient(120deg, var(--lime), var(--lime-2)); box-shadow: var(--glow); }

        .studio {
            display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
            gap: 22px; align-items: start;
            max-width: 1000px; margin: 26px auto 0;
        }
        @media (max-width: 900px) { .studio { grid-template-columns: 1fr; } }

        .studio-controls {
            padding: 4px 4px;
            border: 1px solid var(--stroke); border-radius: var(--radius);
            background: var(--panel); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow);
        }
        .sgroup { padding: 16px; border-bottom: 1px solid var(--stroke); }
        .sgroup:last-child { border-bottom: 0; }
        .sgroup > h3 {
            margin: 0 0 12px; font-size: 0.74rem; font-weight: 700;
            letter-spacing: 0.14em; text-transform: uppercase; color: var(--lime);
        }
        .studio label {
            display: block; margin: 13px 0 5px;
            font-size: 0.72rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted);
        }
        .sgroup > *:first-child + label, .studio label:first-of-type { margin-top: 0; }
        .studio .v { float: right; color: var(--txt); text-transform: none; letter-spacing: 0; font-weight: 700; }
        .studio input[type="text"], .studio select {
            width: 100%; padding: 11px 13px; font-family: var(--font); font-size: 0.94rem;
            color: var(--txt); background: rgba(0, 0, 0, 0.28);
            border: 1px solid var(--stroke-2); border-radius: 10px;
        }
        .studio input[type="text"]:focus, .studio select:focus { outline: none; border-color: var(--lime); box-shadow: var(--ring); }
        .studio select {
            appearance: none; cursor: pointer; padding-right: 38px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%23a8d300'%3E%3Cpath d='M7 10L2 4h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat; background-position: right 13px center;
        }
        .studio input[type="color"] {
            width: 100%; height: 40px; padding: 4px; cursor: pointer;
            background: rgba(0, 0, 0, 0.28); border: 1px solid var(--stroke-2); border-radius: 10px;
        }
        .studio input[type="file"] {
            width: 100%; margin-top: 5px; padding: 9px; font-size: 0.78rem; color: var(--muted);
            background: rgba(0, 0, 0, 0.2); border: 1px dashed var(--stroke-2); border-radius: 10px; cursor: pointer;
        }
        .studio input[type="range"] {
            -webkit-appearance: none; appearance: none;
            width: 100%; height: 6px; margin-top: 8px; border-radius: 6px;
            background: linear-gradient(90deg, var(--lime), rgba(255, 255, 255, 0.12));
            outline: none; cursor: pointer;
        }
        .studio input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none; appearance: none; width: 18px; height: 18px; border-radius: 50%;
            background: var(--lime); border: 3px solid var(--bg-elev); box-shadow: 0 0 0 1px var(--lime); cursor: pointer;
        }
        .studio input[type="range"]::-moz-range-thumb {
            width: 18px; height: 18px; border-radius: 50%; background: var(--lime); border: 3px solid var(--bg-elev); cursor: pointer;
        }
        .studio .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
        .studio .chk {
            display: flex; align-items: center; gap: 9px; margin-top: 13px;
            font-size: 0.9rem; letter-spacing: 0; text-transform: none; color: var(--txt); cursor: pointer;
        }
        .studio .chk input { width: 18px; height: 18px; margin: 0; accent-color: var(--lime); cursor: pointer; }
        .preset-row { display: flex; flex-wrap: wrap; gap: 8px; }
        .preset {
            flex: 1 1 30%; padding: 9px 8px; font-family: var(--font); font-size: 0.8rem; font-weight: 500;
            color: var(--txt); background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--stroke-2); border-radius: 10px; cursor: pointer;
            transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
        }
        .preset:hover { border-color: var(--lime); background: rgba(168, 211, 0, 0.1); }
        .mini {
            margin-top: 10px; padding: 8px 12px; font-family: var(--font); font-size: 0.8rem;
            color: var(--muted); background: transparent; border: 1px solid var(--stroke-2); border-radius: 8px; cursor: pointer;
        }
        .mini:hover { color: var(--txt); border-color: var(--muted); }
        [data-when][hidden] { display: none; }

        .studio-preview { position: sticky; top: 18px; display: flex; flex-direction: column; gap: 14px; }
        .preview-frame {
            padding: 16px; border: 1px solid var(--stroke); border-radius: var(--radius);
            background: var(--panel); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow); display: grid; place-items: center;
        }
        #st-canvas { max-width: 100%; height: auto; border-radius: 12px; box-shadow: 0 18px 50px -16px rgba(0, 0, 0, 0.8); }
        #st-download {
            padding: 15px; font-family: var(--font); font-size: 1rem; font-weight: 700; color: #10130a;
            background: linear-gradient(120deg, var(--lime), var(--lime-2)); border: 0; border-radius: 12px; cursor: pointer;
            transition: box-shadow 0.25s var(--ease), filter 0.25s var(--ease);
        }
        #st-download:hover { box-shadow: var(--glow); filter: brightness(1.05); }
        .scan-tip { margin: 0; font-size: 0.8rem; line-height: 1.5; color: var(--muted); }
        .scan-tip.warn { color: #ffcf5d; }
        #st-error { color: var(--danger); font-size: 0.85rem; font-weight: 500; min-height: 1px; }