/* ArkiaOS Workshop — estilos (fallback si Tailwind CDN no carga) */
        /* ── FALLBACK si Tailwind no carga ── */
        *, *::before, *::after { box-sizing: border-box; }
        .text-white   { color: #ffffff !important; }
        .text-gray-300{ color: #d1d5db !important; }
        .text-gray-400{ color: #9ca3af !important; }
        .text-gray-500{ color: #6b7280 !important; }
        .text-gray-600{ color: #4b5563 !important; }
        .text-gray-700{ color: #374151 !important; }
        .text-teal-400{ color: #2dd4bf !important; }
        .text-teal-500{ color: #14b8a6 !important; }
        .text-blue-500{ color: #3b82f6 !important; }
        .accent-color, .accent-color * { color: #26a69a; }
        .max-w-7xl { max-width: 1280px; margin-left: auto; margin-right: auto; }
        .max-w-5xl { max-width: 1024px; margin-left: auto; margin-right: auto; }
        .max-w-3xl { max-width: 768px;  margin-left: auto; margin-right: auto; }
        .max-w-2xl { max-width: 640px;  margin-left: auto; margin-right: auto; }
        .grid { display: grid; gap: 2rem; }
        .flex { display: flex; }
        .flex-col { flex-direction: column; }
        .flex-wrap { flex-wrap: wrap; }
        .flex-1 { flex: 1; }
        .flex-shrink-0 { flex-shrink: 0; }
        .items-center { align-items: center; }
        .items-start  { align-items: flex-start; }
        .justify-center { justify-content: center; }
        .justify-between { justify-content: space-between; }
        .text-center { text-align: center; }
        .block { display: block; }
        .inline-block { display: inline-block; }
        .hidden { display: none !important; }
        .w-full { width: 100%; }
        .h-full { height: 100%; }
        .font-bold  { font-weight: 700; }
        .font-black { font-weight: 900; }
        .italic { font-style: italic; }
        .uppercase { text-transform: uppercase; }
        .leading-relaxed { line-height: 1.625; }
        .leading-tight   { line-height: 1.25; }
        .list-none { list-style: none; }
        .overflow-hidden { overflow: hidden; }
        .relative { position: relative; }
        .absolute { position: absolute; }
        .sticky   { position: sticky; }
        .fixed    { position: fixed; }
        .inset-0  { top:0; right:0; bottom:0; left:0; }
        .z-50     { z-index: 50; }
        .border   { border-width: 1px; border-style: solid; }
        .border-b { border-bottom-width: 1px; border-bottom-style: solid; }
        .border-t { border-top-width: 1px; border-top-style: solid; }
        .rounded-lg   { border-radius: 0.5rem; }
        .rounded-xl   { border-radius: 0.75rem; }
        .rounded-2xl  { border-radius: 1rem; }
        .rounded-3xl  { border-radius: 1.5rem; }
        .rounded-full { border-radius: 9999px; }
        .shadow-2xl   { box-shadow: 0 25px 50px rgba(0,0,0,0.5); }
        .cursor-pointer { cursor: pointer; }
        .transition-colors { transition: color 0.2s; }
        .transition-all    { transition: all 0.3s; }
        .grayscale { filter: grayscale(1); }
        .opacity-40 { opacity: 0.4; }
        .opacity-50 { opacity: 0.5; }
        /* spacing */
        .px-6  { padding-left: 1.5rem; padding-right: 1.5rem; }
        .px-8  { padding-left: 2rem;   padding-right: 2rem; }
        .px-10 { padding-left: 2.5rem; padding-right: 2.5rem; }
        .py-2  { padding-top: 0.5rem;  padding-bottom: 0.5rem; }
        .py-3  { padding-top: 0.75rem; padding-bottom: 0.75rem; }
        .py-4  { padding-top: 1rem;    padding-bottom: 1rem; }
        .py-5  { padding-top: 1.25rem; padding-bottom: 1.25rem; }
        .py-8  { padding-top: 2rem;    padding-bottom: 2rem; }
        .py-16 { padding-top: 4rem;    padding-bottom: 4rem; }
        .py-20 { padding-top: 5rem;    padding-bottom: 5rem; }
        .py-24 { padding-top: 6rem;    padding-bottom: 6rem; }
        .pt-16 { padding-top: 4rem; }
        .pb-10 { padding-bottom: 2.5rem; }
        .pb-12 { padding-bottom: 3rem; }
        .p-5   { padding: 1.25rem; }
        .p-6   { padding: 1.5rem; }
        .p-8   { padding: 2rem; }
        .mb-1  { margin-bottom: 0.25rem; }
        .mb-2  { margin-bottom: 0.5rem; }
        .mb-3  { margin-bottom: 0.75rem; }
        .mb-4  { margin-bottom: 1rem; }
        .mb-6  { margin-bottom: 1.5rem; }
        .mb-8  { margin-bottom: 2rem; }
        .mb-10 { margin-bottom: 2.5rem; }
        .mb-12 { margin-bottom: 3rem; }
        .mb-14 { margin-bottom: 3.5rem; }
        .mb-16 { margin-bottom: 4rem; }
        .mb-20 { margin-bottom: 5rem; }
        .mt-1  { margin-top: 0.25rem; }
        .mt-3  { margin-top: 0.75rem; }
        .mt-4  { margin-top: 1rem; }
        .mx-auto { margin-left: auto; margin-right: auto; }
        .gap-3 { gap: 0.75rem; }
        .gap-4 { gap: 1rem; }
        .gap-5 { gap: 1.25rem; }
        .gap-6 { gap: 1.5rem; }
        .gap-8 { gap: 2rem; }
        .gap-12{ gap: 3rem; }
        .gap-16{ gap: 4rem; }
        .space-y-3 > * + * { margin-top: 0.75rem; }
        .space-y-4 > * + * { margin-top: 1rem; }
        .space-y-6 > * + * { margin-top: 1.5rem; }
        .space-y-24 > * + * { margin-top: 6rem; }
        /* text sizes */
        .text-xs   { font-size: 0.75rem; }
        .text-sm   { font-size: 0.875rem; }
        .text-base { font-size: 1rem; }
        .text-lg   { font-size: 1.125rem; }
        .text-xl   { font-size: 1.25rem; }
        .text-2xl  { font-size: 1.5rem; }
        .text-3xl  { font-size: 1.875rem; }
        .text-4xl  { font-size: 2.25rem; }
        .text-5xl  { font-size: 3rem; }
        .text-6xl  { font-size: 3.75rem; }
        .text-7xl  { font-size: 4.5rem; }
        .text-8xl  { font-size: 6rem; }
        /* responsive grids */
        @media (min-width: 768px) {
            .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
            .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
            .md\:flex        { display: flex !important; }
            .md\:max-w-sm    { max-width: 384px; }
            .md\:order-1     { order: 1; }
            .md\:order-2     { order: 2; }
            .md\:text-5xl    { font-size: 3rem; }
            .md\:text-6xl    { font-size: 3.75rem; }
        }
        @media (min-width: 1024px) {
            .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
        }
        a { text-decoration: none; }
        img { max-width: 100%; height: auto; }
        strong { font-weight: 700; }

        body {
            background-color: #0f0f0f;
            color: #e0e0e0;
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            scroll-behavior: smooth;
            overflow-x: hidden;
        }

        section { scroll-margin-top: 80px; }

        .hero-gradient {
            background: linear-gradient(135deg, #141414 0%, #0a2424 50%, #141414 100%);
            background-size: 200% 200%;
            animation: gradientShift 15s ease infinite;
        }
        @keyframes gradientShift {
            0%, 100% { background-position: 0% 50%; }
            50%       { background-position: 100% 50%; }
        }

        .accent-color { color: #26a69a; }

        .btn-primary {
            background: linear-gradient(135deg, #26a69a 0%, #1f8a7f 100%);
            box-shadow: 0 8px 20px rgba(38,166,154,0.3), 0 2px 4px rgba(0,0,0,0.2);
            transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            display: inline-block; text-decoration: none; text-align: center;
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(38,166,154,0.4); }

        .btn-secondary {
            background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
            box-shadow: 0 8px 20px rgba(34,197,94,0.3);
            transition: all 0.3s; display: inline-block; text-decoration: none; text-align: center;
        }
        .btn-secondary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(34,197,94,0.4); }

        .btn-tertiary {
            background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
            box-shadow: 0 8px 20px rgba(14,165,233,0.3);
            transition: all 0.3s; display: inline-block; text-decoration: none; text-align: center;
        }
        .btn-tertiary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(14,165,233,0.4); }

        .card-dark {
            background: rgba(26,26,26,0.6);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.08);
            transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        .card-dark:hover {
            border-color: #26a69a;
            transform: translateY(-4px);
            box-shadow: 0 15px 40px rgba(38,166,154,0.15);
        }

        .feature-icon {
            background: rgba(38,166,154,0.1);
            width: 56px; height: 56px;
            border-radius: 14px;
            display: flex; align-items: center; justify-content: center;
            margin-bottom: 1.25rem;
            transition: all 0.3s;
        }
        .feature-icon:hover { background: rgba(38,166,154,0.2); transform: scale(1.1) rotate(5deg); }

        .img-container {
            overflow: hidden; border-radius: 12px;
            border: 1px solid #2a2a2a;
            box-shadow: 0 20px 40px rgba(0,0,0,0.5);
            cursor: zoom-in; position: relative;
            transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
            display: block;
        }
        .img-container:hover { transform: translateY(-6px); border-color: #26a69a; box-shadow: 0 25px 50px rgba(38,166,154,0.25); }
        .img-container img { transition: transform 0.5s cubic-bezier(0.4,0,0.2,1); display: block; width: 100%; }
        .img-container:hover img { transform: scale(1.04); }
        .img-container::after {
            content: "🔍 CLIC PARA AMPLIAR";
            position: absolute; bottom: 12px; right: 12px;
            background: rgba(38,166,154,0.9); color: white;
            padding: 4px 10px; font-size: 9px; border-radius: 20px;
            opacity: 0; transition: 0.3s; font-weight: bold; pointer-events: none;
        }
        .img-container:hover::after { opacity: 1; }

        .logo-nav { height: 42px; width: auto; object-fit: contain; }

        /* ── Sello "pago único" ── */
        @keyframes badgePulse {
            0%, 100% { transform: rotate(-10deg) scale(1); }
            50%       { transform: rotate(-10deg) scale(1.08); }
        }

        .gallery-item {
            overflow: hidden; border-radius: 10px;
            border: 1px solid #1e1e1e; cursor: zoom-in;
            position: relative; transition: all 0.3s;
            display: block;
        }
        .gallery-item:hover { border-color: #26a69a; transform: translateY(-3px); box-shadow: 0 12px 30px rgba(38,166,154,0.2); }
        .gallery-item img { display: block; width: 100%; aspect-ratio: 16/10; object-fit: cover; transition: transform 0.4s; }
        .gallery-item:hover img { transform: scale(1.04); }
        .gallery-item-caption {
            position: absolute; bottom: 0; left: 0; right: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
            padding: 20px 12px 10px;
            transform: translateY(100%); transition: transform 0.3s;
        }
        .gallery-item:hover .gallery-item-caption { transform: translateY(0); }
        .gallery-item-caption p { color: #fff; font-size: 0.72rem; font-weight: 600; }

        .video-card { transition: all 0.3s; cursor: pointer; }
        .video-card:hover { transform: translateY(-4px); }
        .video-card:hover .play-icon { transform: scale(1.12); }
        .play-icon { transition: transform 0.25s; }