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

/* Variables */
:root {
    --color--txt-primario: #000000;
    --color--txt-secundario: #ffffff;
    --color--fondo-primario: #000000;
    --color--fondo-secundario: #ffffff;
    --fs--txt-primario: 2rem;
    --fs--txt-secundario: 1.5rem;
    --fs--txt-terciario: 1rem;
    --fs--txt-detalles: 0.8rem;
}


/* Base */
html,
body {
    height: 100%;
    width: 100%;
    font-family: "Open Sans", sans-serif;
    background-color: var(--color--fondo-primario);
}

/* ==========================
   BARRA PRINCIPAL FIJA
========================== */
.barra {
    height: 80px;
    width: 100%;
    background-color: var(--color--fondo-secundario);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    padding: 0 40px;
    z-index: 1000;
    user-select: none;
}

.lado-izquierdo {
    display: flex;
    align-items: center;
    gap: 30px;
    user-select: none;
}

.logo-barra {
    width: 70px;
    height: 70px;
    user-select: none;
}

.txt-barra {
    font-size: var(--fs--txt-secundario);
    margin: 0;
    user-select: none;
}

.caja-txt {
    display: flex;
    gap: 25px;
    font-size: var(--fs--txt-terciario);
    cursor: pointer;
    text-decoration: none;
    color: var(--color--txt-primario);
    transition: opacity 0.2s ease;
}

.caja-txt a:hover {
    transform: scale(1.01);
    color: #181818;
    box-shadow: 0 0 10px rgba(233, 230, 230, 0.2);
}

#t {
    color: var(--color--txt-primario);
    text-decoration: none;
}

/* ZONA DE PRODUCTOS */
.zona-productos {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding: 80px 20px 20px 20px;
    justify-content: center;
    color: var(--color--txt-secundario);
    text-align: center;
}

.txt-pro {
    display: flex;
    flex-direction: column;
    gap: 7px;
    margin-top: 10px;
}

/*productos*/
.productos {
    margin-left: 20px;
    margin-right: 20px;
    margin-bottom: 5px;
    border-radius: 10px;
    border: 2px solid var(--color--fondo-secundario);
    height: auto;
    opacity: 0;
    width: 90%;
}

.caja-pro {
    color: var(--color--txt-primario);
    background-color: var(--color--fondo-secundario);
    border-radius: 8px;
    margin: 8px;
    height: 240px;
    width: 240px;
    opacity: 0;
    z-index: 0;
}

.caja-pro:hover {
    transform: scale(1.1);
}

.line-shadow {
    margin: 8px;
    opacity: 0;
    height: 5px;
    width: 240px;
    background: transparent;
    position: relative;
    z-index: 1;
}

.img-pro {
    height: 40px;
    width: 40px;
    margin: 4px;
    user-select: none;
}

.txt-p {
    margin: 6px;
    font-size: var(--fs--txt-terciario);
}

.btn-pro {
    border: 2px solid transparent;
    border-radius: 4px;
    background:
        linear-gradient(white, white) padding-box,
        linear-gradient(135deg, rgba(3, 21, 63, 1), rgba(48, 108, 169, 1), rgba(3, 21, 63, 1)) border-box;
    background-size: 200% 200%;
    animation: gradientShift 3s ease-in-out infinite;
    cursor: pointer;
    position: relative;
    margin-top: 16px;
    margin-bottom: 8px;
    font-size: 1.1rem;
    transition: transform 300ms cubic-bezier(1, 0.295, 0, 0.98);
}

.btn-pro:hover {
    transform: scale(1.05);
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}