/* Accessibility & Focus Standards */
        .skip-link {
            position: absolute;
            top: -100px;
            left: 1rem;
            background: var(--accent, #0066FF);
            color: #ffffff;
            padding: 0.75rem 1.25rem;
            font-weight: 700;
            font-family: 'JetBrains Mono', monospace;
            z-index: 9999;
            border-radius: 4px;
            text-decoration: none;
            transition: top 0.2s ease;
            box-shadow: 0 0 15px rgba(0, 102, 255, 0.5);
        }

        .skip-link:focus {
            top: 1rem;
            outline: 2px solid #ffffff;
        }

        *:focus-visible {
            outline: 2px solid var(--accent, #0066FF);
            outline-offset: 3px;
        }

        @media (prefers-reduced-motion: reduce) {

            *,
            ::before,
            ::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        /* Reflection Cards CSS Migration */
        .reflection-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 26px 32px;
            text-align: left;
            position: relative;
            transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, background-color 0.35s ease, border-color 0.35s ease;
        }

        .reflection-card.accent-1 {
            border-left: 3px solid var(--accent);
        }

        .reflection-card.accent-2 {
            border-left: 3px solid var(--accent2);
        }

        .reflection-card.accent-3 {
            border-left: 3px solid var(--accent3);
        }

        .reflection-card:hover {
            background: var(--card-bg2);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
        }

        .reflection-card.accent-1:hover {
            border-color: var(--accent);
        }

        .reflection-card.accent-2:hover {
            border-color: var(--accent2);
        }

        .reflection-card.accent-3:hover {
            border-color: var(--accent3);
        }

        :root {
            --bg: #020408;
            --bg2: #060c14;
            --bg3: #080e1a;
            --card-bg: rgba(8, 14, 26, 0.85);
            --card-bg2: rgba(10, 18, 32, 0.95);
            --accent: #0066FF;
            --accent2: #00D4FF;
            --accent3: #3388ff;
            --text-main: #f0f4f8;
            --text-muted: #8899aa;
            --text-subtle: #4a5a6a;
            --border: rgba(0, 102, 255, 0.12);
            --border-bright: rgba(0, 212, 255, 0.18);
            --glow: rgba(0, 102, 255, 0.08);
            --glow2: rgba(0, 212, 255, 0.06);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg);
            background-image:
                radial-gradient(ellipse 120% 60% at 50% -10%, rgba(0, 102, 255, 0.10) 0%, transparent 65%),
                radial-gradient(ellipse 80% 40% at 90% 110%, rgba(0, 212, 255, 0.07) 0%, transparent 60%),
                radial-gradient(ellipse 60% 35% at 8% 108%, rgba(123, 47, 255, 0.06) 0%, transparent 60%);
            color: var(--text-main);
            font-family: 'Inter', 'Space Grotesk', sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        #bg-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            pointer-events: none;
        }

        /* Capa de ruido fractal desactivada para mantener el negro limpio */
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: 1;
            opacity: 0.6;
        }

        .wrapper {
            position: relative;
            z-index: 2;
        }

        header {
            min-height: 70vh;
            width: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            position: relative;
            padding: 60px 20px;
            box-sizing: border-box;
            overflow: hidden;
        }

        header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), var(--accent2), transparent);
        }


        h1 {
            font-family: 'Space Grotesk', sans-serif;
            font-size: clamp(2.8rem, 6.5vw, 5.2rem);
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 3px;
            text-transform: uppercase;
            line-height: 1.0;
            text-shadow: 0 0 60px rgba(0, 102, 255, 0.15), 0 2px 4px rgba(0, 0, 0, 0.8);
            opacity: 0;
            animation: fadeDown 0.9s 0.4s forwards;
        }


        section {
            padding: 80px 20px;
            max-width: 1140px;
            margin: auto;
        }

        h2 {
            font-family: 'Space Grotesk', sans-serif;
            color: #ffffff;
            text-transform: uppercase;
            margin-bottom: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 5px;
            display: flex;
            align-items: center;
            gap: 16px;
        }

        h2::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 22px;
            background: linear-gradient(180deg, var(--accent), var(--accent2));
            border-radius: 2px;
            box-shadow: 0 0 10px var(--accent);
            flex-shrink: 0;
        }

        h2::after {
            content: '';
            flex: 1;
            height: 1px;
            background: linear-gradient(90deg, var(--border-bright), transparent);
        }

        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 102, 255, 0.15), transparent);
            max-width: 1140px;
            margin: 0 auto;
            opacity: 0.5;
        }

        .stack-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(115px, 1fr));
            gap: 18px;
            text-align: center;
        }


        /* ===== STACK TABS: una sola línea horizontal + panel desplegable ===== */
        .stack-tabs {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding-bottom: 12px;
            margin-bottom: 20px;
            scrollbar-width: thin;
            -webkit-overflow-scrolling: touch;
        }

        .stack-tabs::-webkit-scrollbar {
            height: 4px;
        }

        .stack-tabs::-webkit-scrollbar-thumb {
            background: var(--border-bright);
            border-radius: 2px;
        }

        .stack-tab {
            flex: 0 0 auto;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.68rem;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--text-muted);
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 18px;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .stack-tab:hover {
            color: var(--text-main);
            border-color: var(--border-bright);
            transform: translateY(-2px);
        }

        .stack-tab[aria-selected="true"] {
            color: #fff;
            background: rgba(0, 102, 255, 0.14);
            border-color: var(--tab-accent, var(--accent2));
            box-shadow: 0 0 0 1px var(--tab-accent, var(--accent2)), 0 8px 24px rgba(0, 0, 0, 0.35);
        }

        /* ===== CERT TABS: mismo patrón que ./ Marcos y Metodología ===== */
        .cert-tabs {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding-bottom: 12px;
            margin-bottom: 20px;
            scrollbar-width: thin;
            -webkit-overflow-scrolling: touch;
        }

        .cert-tabs::-webkit-scrollbar {
            height: 4px;
        }

        .cert-tabs::-webkit-scrollbar-thumb {
            background: var(--border-bright);
            border-radius: 2px;
        }

        .cert-tab {
            flex: 0 0 auto;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.68rem;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--text-muted);
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 18px;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .cert-tab:hover {
            color: var(--text-main);
            border-color: var(--border-bright);
            transform: translateY(-2px);
        }

        .cert-tab[aria-selected="true"] {
            color: #fff;
            background: rgba(0, 102, 255, 0.14);
            border-color: var(--tab-accent, var(--accent2));
            box-shadow: 0 0 0 1px var(--tab-accent, var(--accent2)), 0 8px 24px rgba(0, 0, 0, 0.35);
        }

        .cert-tab[data-cert="certificaciones"] {
            --tab-accent: var(--accent2);
        }

        .cert-tab[data-cert="logros"] {
            --tab-accent: #0066FF;
        }

        .cert-panel[hidden] {
            display: none;
        }

        .hidden {
            display: none !important;
        }

        .stack-select {
            display: none;
            width: 100%;
            margin-bottom: 16px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
            letter-spacing: 1px;
            color: var(--text-main);
            background: var(--card-bg2);
            border: 1px solid var(--border-bright);
            border-radius: 8px;
            padding: 12px 14px;
            cursor: pointer;
        }

        .stack-panel {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-left: 3px solid var(--panel-accent, var(--accent2));
            border-radius: 8px;
            padding: 24px;
            min-height: 190px;
        }

        .stack-panel-head {
            display: flex;
            align-items: baseline;
            gap: 12px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .stack-panel-head h3 {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 1rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--text-main);
            margin: 0;
        }

        .stack-panel-head .sub {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.68rem;
            color: var(--panel-accent, var(--accent2));
            letter-spacing: 1px;
        }

        #stack .stack-grid {
            grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
            gap: 18px 12px;
        }

        .stack-panel[hidden] {
            display: none;
        }

        /* Opción B blindada: skillicons + SVG custom con fallback FA */
        .s-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            transition: transform .15s ease;
        }

        .s-item:hover {
            transform: translateY(-3px);
        }

        .s-icon-box {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 20, 50, 0.5);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .s-icon-box img {
            width: 26px;
            height: 26px;
        }

        .s-icon-box img.s-img-error {
            display: none;
        }

        .s-icon-box svg {
            width: 22px;
            height: 22px;
            color: var(--panel-accent, var(--accent2));
        }

        .s-icon-box .s-fallback {
            display: none;
            font-size: 1.3rem;
            color: var(--panel-accent, var(--accent2));
        }

        .s-item span {
            font-family: 'JetBrains Mono', monospace;
            font-size: 11px;
            line-height: 1.3;
            color: var(--text-muted);
            text-align: center;
        }

        @media (max-width: 640px) {
            .stack-tabs {
                display: none;
            }

            .stack-select {
                display: block;
            }
        }

        .about-wrap {
            display: flex;
            gap: 48px;
            align-items: center;
            flex-wrap: wrap;
        }

        .about-avatar {
            width: 160px;
            height: 160px;
            border-radius: 14px;
            flex-shrink: 0;
            border: 1px solid rgba(0, 102, 255, 0.3);
            box-shadow: 0 0 40px rgba(0, 102, 255, 0.1), 0 0 80px rgba(0, 102, 255, 0.04), 0 20px 60px rgba(0, 0, 0, 0.6);
            overflow: hidden;
            background: var(--card-bg2);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .about-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.4s ease;
        }

        .about-avatar:hover img {
            transform: scale(1.06);
        }

        .about-avatar .avatar-fallback {
            display: none;
            font-size: 4rem;
            color: var(--accent);
        }

        .about-avatar img.img-error {
            display: none;
        }

        .about-avatar img.img-error~.avatar-fallback {
            display: flex;
        }

        .about-text {
            flex: 1;
            min-width: 280px;
        }

        .about-text p {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.8;
            font-weight: 300;
        }

        .about-text strong.g {
            color: var(--text-main);
            font-weight: 600;
        }

        .about-text strong.b {
            color: var(--accent2);
            font-weight: 500;
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 26px;
        }

        #proyectos .grid {
            grid-template-columns: repeat(3, 1fr);
        }

        @media (max-width: 900px) {
            #proyectos .grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            #proyectos .grid {
                grid-template-columns: 1fr;
            }
        }


        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            padding: 32px;
            border-radius: 16px;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            backdrop-filter: blur(12px);
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent2), transparent);
            opacity: 0.1;
            transition: opacity 0.4s;
        }

        .card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            background: var(--card-bg2);
            transform: translateY(-8px);
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.1);
        }

        .card:hover::before {
            opacity: 0.8;
        }

        .card h3 {
            font-family: 'Space Grotesk', sans-serif;
            color: #ffffff;
            margin-bottom: 14px;
            font-size: 1.15rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .card h3 i {
            font-size: 0.9rem;
            color: var(--accent2);
        }

        .card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            flex-grow: 1;
            font-weight: 300;
        }

        .project-preview {
            margin: 24px 0 16px;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid rgba(0, 212, 255, 0.12);
            background:
                radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 102, 255, 0.10) 0%, transparent 70%),
                #020408;
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            min-height: 220px;
            display: block;
        }

        .project-preview img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
            display: block;
            transition: transform 0.4s ease, filter 0.4s ease;
        }

        .card:hover .project-preview img {
            transform: scale(1.025);
            filter: brightness(1.08);
        }


        .status-tag {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.62rem;
            color: var(--accent2);
            text-transform: uppercase;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
            opacity: 0.8;
        }

        .status-tag::before {
            content: '';
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent2);
            box-shadow: 0 0 10px var(--accent2);
            animation: statusPulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
        }

        @keyframes statusPulse {

            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }

            50% {
                opacity: 0.3;
                transform: scale(1.5);
            }
        }

        .cert-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
        }

        .cert-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent2), transparent);
            opacity: 0.1;
            transition: opacity 0.4s;
            z-index: 2;
        }

        .cert-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            background: var(--card-bg2);
            transform: translateY(-8px);
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
        }

        .cert-card:hover::before {
            opacity: 0.8;
        }

        .cert-preview {
            width: 100%;
            height: 200px;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
            background: linear-gradient(135deg, #020408, #0a1020);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .cert-preview::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.05), transparent 75%);
        }

        .cert-preview img {
            height: 160px;
            width: auto;
            object-fit: contain;
            filter: drop-shadow(0 4px 20px rgba(0, 200, 255, 0.25));
            transition: transform 0.4s ease, filter 0.4s ease;
            position: relative;
            z-index: 1;
        }

        .cert-preview img[data-error="true"] {
            display: none;
        }

        .cert-card:hover .cert-preview img {
            transform: scale(1.08);
            filter: drop-shadow(0 4px 28px rgba(0, 200, 255, 0.45));
        }


        .cert-body {
            padding: 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .cert-body .btn {
            margin-top: auto;
            align-self: flex-start;
            min-width: 215px;
            justify-content: center;
        }

        .cert-body h3 {
            font-family: 'Space Grotesk', sans-serif;
            color: #ffffff;
            margin-bottom: 10px;
            font-size: 1.1rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .cert-body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 20px;
            font-weight: 300;
        }

        .cert-meta {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.65rem;
            color: var(--text-subtle);
            letter-spacing: 1px;
            margin-bottom: 18px;
        }

        .cert-meta span {
            color: var(--accent2);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-top: 8px;
            padding: 12px 26px;
            border: 1px solid rgba(0, 102, 255, 0.4);
            color: #ffffff;
            text-decoration: none;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            background: rgba(0, 102, 255, 0.05);
            cursor: pointer;
            border-radius: 8px;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }

        .btn::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, var(--accent), var(--accent2));
            opacity: 0;
            transition: opacity 0.4s;
            z-index: -1;
        }

        .btn:hover {
            color: #fff;
            border-color: var(--accent2);
            box-shadow: 0 0 30px rgba(0, 102, 255, 0.3);
            transform: translateY(-2px);
        }

        .btn:hover::before {
            opacity: 0.2;
        }

        .btn-b {
            border-color: rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.03);
        }

        .btn-b:hover {
            border-color: var(--text-muted);
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== BOTONES DE CONTACTO ===== */

        .btn-linkedin {
            border-color: #0A66C2;
            color: #6EC6FF;
        }

        .btn-linkedin::before {
            background: #0A66C2;
        }

        .btn-linkedin:hover {
            border-color: #33A8FF;
            box-shadow: 0 0 25px rgba(10, 102, 194, .45);
        }

        .btn-whatsapp {
            border-color: #25D366;
            color: #25D366;
        }

        .btn-whatsapp::before {
            background: #25D366;
        }

        .btn-whatsapp:hover {
            border-color: #25D366;
            box-shadow: 0 0 25px rgba(37, 211, 102, .45);
        }

        .btn-gmail {
            border-color: #EA4335;
            color: #EA4335;
        }

        .btn-gmail:hover {
            border-color: #EA4335;
            box-shadow: 0 0 25px rgba(234, 67, 53, .45);
        }

        .btn-facebook {
            border-color: #1877F2;
            color: #4DA3FF;
        }

        .btn-facebook::before {
            background: #1877F2;
        }

        .btn-facebook:hover {
            border-color: #1877F2;

            box-shadow:
                0 0 25px rgba(24,
                    119,
                    242,
                    0.45);
        }

        /* GitHub: neutro blanco — equilibra la fila de colores de marca */
        .btn-github {
            border-color: rgba(230, 237, 243, 0.35);
            color: #e6edf3;
        }

        .btn-github::before {
            background: rgba(230, 237, 243, 0.9);
        }

        .btn-github:hover {
            border-color: #e6edf3;
            box-shadow: 0 0 25px rgba(230, 237, 243, 0.25);
        }

        /* Ancho parejo solo en Conectar — fila simétrica con 5 botones */
        #contacto .contact-area .btn {
            min-width: 158px;
            justify-content: center;
        }


        .contact-area {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
        }

        /* ===== MEDIA KIT — banner OG como tarjeta en Conectar ===== */
        #contacto .media-kit {
            margin-bottom: 26px;
        }

        #contacto .h2-center {
            margin-bottom: 26px;
        }

        #contacto .contact-area {
            margin-top: 0;
        }

        .media-kit {
            max-width: 300px;
            margin: 8px auto 32px;
            padding: 10px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 14px;
            backdrop-filter: blur(12px);
        }

        .media-kit-preview {
            display: block;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .media-kit-preview img {
            display: block;
            width: 100%;
            height: auto;
            aspect-ratio: 3 / 2;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .media-kit-preview:hover img {
            transform: scale(1.03);
        }

        @media (max-width: 768px) {
            .media-kit {
                max-width: 260px;
                padding: 8px;
            }
        }

        footer {
            text-align: center;
            padding: 60px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.68rem;
            color: var(--text-subtle);
            letter-spacing: 2px;
            text-transform: uppercase;
            position: relative;
            z-index: 2;
        }

        footer::before {
            content: '';
            display: block;
            width: 60px;
            height: 1px;
            background: var(--accent2);
            margin: 0 auto 30px;
            opacity: 0.3;
        }

        @keyframes fadeDown {
            from {
                opacity: 0;
                transform: translateY(-18px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }


        @media (max-width: 768px) {
            h1 {
                font-size: 2.3rem;
            }

            header {
                min-height: 55vh;
            }

            section {
                padding: 55px 16px;
            }

            .about-wrap {
                flex-direction: column;
                gap: 24px;
            }

            .about-avatar {
                width: 120px;
                height: 120px;
                align-self: center;
            }
        }

/* ===== Fase 3: utilidades migradas desde atributos style= inline ===== */
.stack-tab[data-stack="frameworks"]{--tab-accent:var(--accent2)}
.stack-tab[data-stack="base"]{--tab-accent:#5b8dae}
.stack-tab[data-stack="infra"]{--tab-accent:#7c8797}
.stack-tab[data-stack="red"]{--tab-accent:#d97706}
.stack-tab[data-stack="blue"]{--tab-accent:#2f9e8f}
.stack-tab[data-stack="ai"]{--tab-accent:#8b7fd1}
#panel-frameworks{--panel-accent:var(--accent2)}
#panel-base{--panel-accent:#5b8dae}
#panel-infra{--panel-accent:#7c8797}
#panel-red{--panel-accent:#d97706}
#panel-blue{--panel-accent:#2f9e8f}
#panel-ai{--panel-accent:#8b7fd1}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;padding:0;margin:-1px}
.s-icon-fa{font-size:1.3rem;color:var(--panel-accent)}
.mt-14{margin-top:14px}
.code-accent{color:var(--accent);font-size:.85em}
.text-accent{color:var(--accent)}
.text-accent2{color:var(--accent2)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}
.action-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
#proyectos .action-row{flex-wrap:nowrap;gap:8px;margin-top:auto;padding-top:20px}
@media (min-width:901px){#proyectos .card .status-tag{min-height:2.5em}#proyectos .card h3{min-height:3.4em}#proyectos .tag-row{min-height:64px;align-content:flex-start}}
.action-row .btn{flex:1 1 0;min-width:0;justify-content:center;text-align:center;margin-top:0;min-height:50px;padding:8px 4px;font-size:.6rem;letter-spacing:.5px;line-height:1.5}
.img-cover-top{object-fit:cover;object-position:top}
.section-center{text-align:center}
.h2-center{justify-content:center}
.reflection-list{display:flex;flex-direction:column;gap:24px;max-width:780px;margin:0 auto}
.ref-kicker{display:block;font-family:'JetBrains Mono',monospace;font-size:.68rem;letter-spacing:3px;margin-bottom:14px}
.kicker-1{color:var(--accent)}
.kicker-2{color:var(--accent2)}
.kicker-3{color:#c9d1d9}
.ref-quote{font-family:'Inter',sans-serif;font-size:1.12rem;color:#c0d8e8;line-height:1.8;font-style:italic}
.foot-meta{font-size:.6rem;opacity:.65;margin-top:10px}