:root {

        --azul-profundo: #071D35;
        --azul: #0B3A63;
        --azul-claro: #126E9C;

        --turquesa: #18B6B2;
        --turquesa-claro: #55D6D0;

        --blanco: #FFFFFF;
        --gris: #D7E3EA;
        --gris-texto: #AFC2CF;

    }


    /* =====================================================
       RESET
    ====================================================== */

    * {

        margin: 0;
        padding: 0;

        box-sizing: border-box;

    }


    html {

        width: 100%;
        min-height: 100%;

        scroll-behavior: smooth;

    }


    body {

        width: 100%;
        min-height: 100vh;

        font-family:
            "Segoe UI",
            Roboto,
            Arial,
            Helvetica,
            sans-serif;

        color: var(--blanco);

        background:

            radial-gradient(
                circle at 50% 35%,
                rgba(
                    24,
                    182,
                    178,
                    0.14
                ),
                transparent 30%
            ),

            linear-gradient(
                135deg,
                #071D35 0%,
                #092C4C 45%,
                #061727 100%
            );

        position: relative;

        display: flex;

        flex-direction: column;

        justify-content: center;

        align-items: center;

        overflow-x: hidden;

    }


    /* =====================================================
       CÍRCULO DECORATIVO PRINCIPAL
    ====================================================== */

    body::before {

        content: "";

        position: fixed;

        width: 600px;
        height: 600px;

        border-radius: 50%;

        border:
            1px solid
            rgba(
                85,
                214,
                208,
                0.08
            );

        top: 50%;
        left: 50%;

        transform:
            translate(
                -50%,
                -50%
            );

        animation:
            circlePulse 6s
            ease-in-out infinite;

        pointer-events: none;

        z-index: 0;

    }


    /* =====================================================
       CÍRCULO DECORATIVO SECUNDARIO
    ====================================================== */

    body::after {

        content: "";

        position: fixed;

        width: 900px;
        height: 900px;

        border-radius: 50%;

        border:
            1px solid
            rgba(
                85,
                214,
                208,
                0.04
            );

        top: 50%;
        left: 50%;

        transform:
            translate(
                -50%,
                -50%
            );

        pointer-events: none;

        z-index: 0;

    }


    /* =====================================================
       CONTENEDOR PRINCIPAL
    ====================================================== */

    .container {

        position: relative;

        z-index: 2;

        width: 90%;

        max-width: 850px;

        text-align: center;

        padding:
            50px 30px 25px;

        margin: auto;

        animation:
            fadeIn 1.4s
            ease-out;

    }


    /* =====================================================
       LOGO
    ====================================================== */

    .logo-image {

        display: block;

        width:
            min(
                620px,
                90vw
            );

        height: auto;

        max-height: 220px;

        object-fit: contain;

        margin:
            0 auto 28px;

        filter:
            drop-shadow(
                0 0 25px
                rgba(
                    24,
                    182,
                    178,
                    0.18
                )
            );

        animation:
            logoFloat 4s
            ease-in-out infinite;

    }


    /* =====================================================
       MENSAJE PRINCIPAL
    ====================================================== */

    .message {

        margin-top: 10px;

        font-size:
            clamp(
                1.15rem,
                3vw,
                1.65rem
            );

        color:
            var(--blanco);

        font-weight: 500;

    }


    .message strong {

        color:
            var(--turquesa-claro);

    }


    /* =====================================================
       DESCRIPCIÓN
    ====================================================== */

    .description {

        max-width: 650px;

        margin:
            18px auto 0;

        font-size:
            clamp(
                0.9rem,
                2vw,
                1rem
            );

        line-height: 1.7;

        color:
            var(--gris-texto);

    }


    /* =====================================================
       LOADER
    ====================================================== */

    .loader {

        position: relative;

        margin:
            38px auto 0;

        width: 180px;

        height: 4px;

        background:
            rgba(
                255,
                255,
                255,
                0.12
            );

        border-radius: 20px;

        overflow: hidden;

    }


    .loader::before {

        content: "";

        position: absolute;

        left: -40%;

        top: 0;

        width: 40%;

        height: 100%;

        border-radius: 20px;

        background:

            linear-gradient(
                90deg,
                var(--azul-claro),
                var(--turquesa),
                var(--turquesa-claro)
            );

        animation:
            loading 2s
            ease-in-out infinite;

    }


    /* =====================================================
       FOOTER
    ====================================================== */

    .footer {

        position: relative;

        z-index: 3;

        width: 100%;

        padding:
            18px 20px 22px;

        margin-top: auto;

        text-align: center;

        border-top:
            1px solid
            rgba(
                85,
                214,
                208,
                0.10
            );

        background:
            rgba(
                4,
                18,
                32,
                0.30
            );

        backdrop-filter:
            blur(8px);

        -webkit-backdrop-filter:
            blur(8px);

    }


    /* =====================================================
       ENLACES FOOTER
    ====================================================== */

    .footer-links {

        display: flex;

        justify-content: center;

        align-items: center;

        flex-wrap: wrap;

        gap: 10px;

        margin-bottom: 10px;

        font-size:
            0.76rem;

    }


    .footer-links a {

        color:
            rgba(
                215,
                227,
                234,
                0.72
            );

        text-decoration: none;

        letter-spacing:
            0.03em;

        transition:
            color 0.25s ease,
            text-shadow 0.25s ease;

    }


    .footer-links a:hover {

        color:
            var(--turquesa-claro);

        text-shadow:
            0 0 10px
            rgba(
                85,
                214,
                208,
                0.35
            );

    }


    .footer-separator {

        color:
            rgba(
                85,
                214,
                208,
                0.35
            );

        user-select: none;

    }


    /* =====================================================
       COPYRIGHT
    ====================================================== */

    .footer-copy {

        font-size:
            0.68rem;

        letter-spacing:
            0.05em;

        line-height: 1.6;

        color:
            rgba(
                215,
                227,
                234,
                0.38
            );

    }


    /* =====================================================
       ANIMACIONES
    ====================================================== */

    @keyframes fadeIn {

        from {

            opacity: 0;

            transform:
                translateY(25px);

        }

        to {

            opacity: 1;

            transform:
                translateY(0);

        }

    }


    @keyframes logoFloat {

        0%,
        100% {

            transform:
                translateY(0);

        }

        50% {

            transform:
                translateY(-6px);

        }

    }


    @keyframes loading {

        0% {

            transform:
                translateX(0);

        }

        50% {

            transform:
                translateX(350%);

        }

        100% {

            transform:
                translateX(350%);

        }

    }


    @keyframes circlePulse {

        0%,
        100% {

            transform:
                translate(
                    -50%,
                    -50%
                )
                scale(1);

            opacity: 0.6;

        }

        50% {

            transform:
                translate(
                    -50%,
                    -50%
                )
                scale(1.08);

            opacity: 1;

        }

    }


    /* =====================================================
       RESPONSIVE
    ====================================================== */

    @media (max-width: 600px) {

        body {

            min-height: 100svh;

        }


        .container {

            width: 94%;

            padding:
                35px 15px 25px;

        }


        .logo-image {

            width: 88vw;

            max-width: 460px;

            max-height: 150px;

            margin-bottom: 25px;

        }


        .description {

            line-height: 1.6;

        }


        .loader {

            margin-top: 30px;

        }


        .footer {

            padding:
                16px 12px 20px;

        }


        .footer-links {

            gap: 5px 8px;

            line-height: 1.8;

        }


        .footer-copy {

            padding:
                0 8px;

        }


        body::before {

            width: 380px;
            height: 380px;

        }


        body::after {

            width: 550px;
            height: 550px;

        }

    }


    /* =====================================================
       REDUCCIÓN DE ANIMACIONES
       Accesibilidad
    ====================================================== */

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

        *,
        *::before,
        *::after {

            animation-duration: 0.01ms !important;

            animation-iteration-count: 1 !important;

            scroll-behavior: auto !important;

        }

    }
    
    
    
    
/* ============================================================
   BOTÓN VOLVER AL TOP
============================================================ */

.back-to-top {

    position: fixed;

    right: 24px;
    bottom: 24px;

    width: 46px;
    height: 46px;

    display: flex;

    align-items: center;
    justify-content: center;

    border: 1px solid
        rgba(
            85,
            214,
            208,
            .22
        );

    border-radius: 50%;

    background:

        linear-gradient(
            135deg,
            var(--azul-profundo),
            var(--azul)
        );

    color:
        var(--blanco);

    font-size: 1.35rem;

    line-height: 1;

    cursor: pointer;

    opacity: 0;

    visibility: hidden;

    transform:
        translateY(15px);

    z-index: 9999;

    box-shadow:

        0 8px 24px
        rgba(
            7,
            29,
            53,
            .22
        );

    transition:

        opacity .25s ease,
        visibility .25s ease,
        transform .25s ease,
        background .25s ease,
        box-shadow .25s ease;
}


/* ============================================================
   BOTÓN VISIBLE
============================================================ */

.back-to-top.is-visible {

    opacity: 1;

    visibility: visible;

    transform:
        translateY(0);

}


/* ============================================================
   HOVER
============================================================ */

.back-to-top:hover {

    background:

        linear-gradient(
            135deg,
            var(--azul),
            var(--azul-claro)
        );

    box-shadow:

        0 10px 28px
        rgba(
            7,
            29,
            53,
            .30
        );

    transform:
        translateY(-3px);

}


/* ============================================================
   ACTIVE
============================================================ */

.back-to-top:active {

    transform:
        translateY(0);

}


/* ============================================================
   FOCUS
============================================================ */

.back-to-top:focus-visible {

    outline:
        3px solid
        rgba(
            85,
            214,
            208,
            .40
        );

    outline-offset:
        3px;

}


/* ============================================================
   RESPONSIVE
============================================================ */

@media (max-width: 600px) {

    .back-to-top {

        right: 16px;
        bottom: 16px;

        width: 42px;
        height: 42px;

        font-size:
            1.20rem;

    }

}


/* ============================================================
   ACCESIBILIDAD
============================================================ */

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

    .back-to-top {

        transition:
            opacity .15s ease,
            visibility .15s ease;

    }

}


/* ============================================================
   REDES SOCIALES DEL FOOTER
============================================================ */

.footer-social {

    display: flex;

    align-items: center;
    justify-content: center;

    gap: 10px;

    margin-bottom: 18px;

}

.footer-social-link {

    width: 40px;
    height: 40px;

    display: flex;

    align-items: center;
    justify-content: center;

    border: 1px solid
        rgba(
            85,
            214,
            208,
            .25
        );

    border-radius: 50%;

    background:
        rgba(
            7,
            29,
            53,
            .75
        );

    color:
        var(--blanco);

    text-decoration: none;

    font-size: 1rem;
    font-weight: 700;

    transition:
        transform .25s ease,
        background .25s ease,
        border-color .25s ease,
        box-shadow .25s ease,
        color .25s ease;

}

.footer-social-link:hover {

    transform:
        translateY(-3px);

    background:
        linear-gradient(
            135deg,
            var(--azul),
            var(--turquesa)
        );

    border-color:
        var(--turquesa-claro);

    color:
        var(--blanco);

    box-shadow:
        0 8px 20px
        rgba(
            7,
            29,
            53,
            .25
        );

}

.footer-social-link:focus-visible {

    outline:
        3px solid
        rgba(
            85,
            214,
            208,
            .40
        );

    outline-offset:
        3px;

}


/* ------------------------------------------------------------
   ICONOS INDIVIDUALES
------------------------------------------------------------ */

.footer-social-link span {

    display: flex;

    align-items: center;
    justify-content: center;

    width: 100%;
    height: 100%;

}


/* LinkedIn */

.footer-social-link.footer-social-in {

    font-family:
        Arial,
        Helvetica,
        sans-serif;

    font-size:
        .95rem;

}


/* Instagram */

.footer-social-link.footer-social-◎ {

    font-size:
        1.35rem;

}


/* X */

.footer-social-link.footer-social-𝕏 {

    font-size:
        1.05rem;

}


/* YouTube */

.footer-social-link.footer-social-▶ {

    font-size:
        .90rem;

}


/* ------------------------------------------------------------
   RESPONSIVE
------------------------------------------------------------ */

@media (max-width: 600px) {

    .footer-social {

        gap: 8px;

        margin-bottom:
            16px;

    }

    .footer-social-link {

        width: 38px;
        height: 38px;

    }

}