:root {
    --color1: #0726D9;
    --color2: #031240;
    --color3: #1760BF;
    --color4: #3D9DF2;
    --color5: #52C5F2;

    --blanco: #FFF;
    --gris: #ebebeb;

    --fuente: 'Montserrat', sans-serif;
}

body.light-theme {
    --bg: var(--blanco);

    --border-color: var(--color1);

    --text-color: var(--color2);

    --button-bg: var(--color2);
    --button-text-color: var(--gris);
    --button-bg-hover: var(--color1);
}

body.dark-theme {
    --bg: var(--color2);

    --border-color: var(--color4);

    --text-color: var(--gris);

    --button-bg: var(--color3);
    --button-text-color: var(--gris);
    --button-bg-hover: var(--color4);
}

/** Globales  */
html {
    font-size: 62.5%;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

body {
    font-family: var(--fuente);
    font-size: 1.6rem;
    color: var(--text-color);
    background-color: var(--bg);
    transition: background .3s ease-in-out;
    position: relative;
}
body.iniciar {
    overflow: hidden;
}

img {
    display: block;
    width: 100%;
}

::-webkit-scrollbar {
    position: absolute;
    width: .8rem;
}
::-webkit-scrollbar-thumb {
    background-color: var(--text-color);
    border-radius: 3rem;
}
::-webkit-scrollbar-button {
    display: block;
    height: 1rem;
}

.contenedor {
    width: 95%;
    max-width: 120rem;
    margin: 0 auto;
}
.ocultar {
    display: none;
}
.opacity-0 {
    opacity: 0;
}

/** Loader */
.loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}
.loader__imagen {
    position: absolute;
    width: max-content;
    height: 18rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: .5s ease-in-out;
}

/** Header */
.header {
    padding: 2rem;
    height: 12rem;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg);
    z-index: 1000;

}

.logo {
    display: block;
}
.logo__imagen {
    height: 8rem;
    width: max-content;
}
.light-theme .logo__imagen--dark {
    display: none;
}
.dark-theme .logo__imagen--light {
    display: none;
}

.theme-button {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--button-bg);
    border: none;
    border-radius: 50%;
    width: 4rem;
    height: 4rem;
    cursor: pointer;
    transition: .3s ease-in-out;
}
.theme-button:hover {
    background-color: var(--button-bg-hover);
}
.theme-button__icon {
    color: var(--button-text-color);
}
.light-theme .theme-button__icon--light {
    display: none;
}
.dark-theme .theme-button__icon--dark {
    display: none;
}

/** Hero */
.hero {
    width: 95%;
    margin: 0 auto;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}
.hero__texto {
    max-width: 60rem;
    text-align: center;
    margin: 0;
    margin-bottom: 4rem;
    opacity: 0;
    transform: translateY(30px);
    transition: .3s ease-in-out 500ms;
}
.hero__texto--visible {
    opacity: 1;
    transform: translateY(0);
}
.hero__texto:last-child {
    margin-bottom: 0;
}
.hero__texto--principal {
    font-size: 3.6rem;
}
.hero__texto--sub {
    font-size: 2.4rem;
}
.hero__texto--bold {
    font-weight: bold;
}

/** Cards */
.cards {
}
@media screen and (min-width: 900px) {
    .cards {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
}
@media screen and (min-width: 1200px) {
    .cards {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}
.card {
    width: 35rem;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    margin: 0 auto;
    margin-bottom: 4rem;
}
.card:last-child {
    margin-bottom: 0;
}
.card-body {
    padding: 0 2rem;
    padding-bottom: 2rem;
}
.card__imagen {
    border-radius: 1rem 1rem 0 0;
}
.card__imagen:hover {

}
.card__titulo {
    margin: 2rem 0;
}
.card__desc {
    margin: 0;
    margin-bottom: 2rem;
    font-weight: 500;
}
.card__link {
    display: block;
    width: max-content;
    padding: 1rem 2rem;
    background-color: var(--button-bg);
    color: var(--button-text-color);
    border-radius: 1rem;
    text-decoration: none;
    transition: background .3s ease-in-out;
}
.card__link:hover {
    background-color: var(--button-bg-hover);
}

/** Proyectos  */
.proyecto-tecnologias {
    margin-top: 2rem;
    user-select: none;
}
.proyecto__tecnologia {
    padding: 1rem;
    border-radius: .5rem;
    background-color: var(--color5);
    display: inline-block;
    color: var(--color2);
    font-weight: 600;
    cursor: pointer;
}

/** Footer */
.footer {
    margin-top: 5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    flex-direction: column;
}
.footer .logo {
    margin-bottom: 4rem;
}
.footer__creditos {
    margin: 0;
}

/** Up Button */
.up-button {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--button-bg);
    color: var(--button-text-color);
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    cursor: pointer;
    position: fixed;
    right: 4rem;
    bottom: 4rem;
    transition: .3s ease-in-out;
}
.up-button.ocultar {
    bottom: -4rem;
}
.up-button:hover {
    background-color: var(--button-bg-hover);
}:root {
    --color1: #0726D9;
    --color2: #031240;
    --color3: #1760BF;
    --color4: #3D9DF2;
    --color5: #52C5F2;

    --blanco: #FFF;
    --gris: #ebebeb;

    --fuente: 'Montserrat', sans-serif;
}

body.light-theme {
    --bg: var(--blanco);

    --border-color: var(--color1);

    --text-color: var(--color2);

    --button-bg: var(--color2);
    --button-text-color: var(--gris);
    --button-bg-hover: var(--color1);
}

body.dark-theme {
    --bg: var(--color2);

    --border-color: var(--color4);

    --text-color: var(--gris);

    --button-bg: var(--color3);
    --button-text-color: var(--gris);
    --button-bg-hover: var(--color4);
}

/** Globales  */
html {
    font-size: 62.5%;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

body {
    font-family: var(--fuente);
    font-size: 1.6rem;
    color: var(--text-color);
    background-color: var(--bg);
    transition: background .3s ease-in-out;
    position: relative;
}
body.iniciar {
    overflow: hidden;
}

img {
    display: block;
    width: 100%;
}

::-webkit-scrollbar {
    position: absolute;
    width: .8rem;
}
::-webkit-scrollbar-thumb {
    background-color: var(--text-color);
    border-radius: 3rem;
}
::-webkit-scrollbar-button {
    display: block;
    height: 1rem;
}

.contenedor {
    width: 95%;
    max-width: 120rem;
    margin: 0 auto;
}
.ocultar {
    display: none;
}
.opacity-0 {
    opacity: 0;
}

/** Loader */
.loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}
.loader__imagen {
    position: absolute;
    width: max-content;
    height: 18rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: .5s ease-in-out;
}

/** Header */
.header {
    padding: 2rem;
    height: 12rem;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg);
    z-index: 1000;

}

.logo {
    display: block;
}
.logo__imagen {
    height: 8rem;
    width: max-content;
}
.light-theme .logo__imagen--dark {
    display: none;
}
.dark-theme .logo__imagen--light {
    display: none;
}

.theme-button {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--button-bg);
    border: none;
    border-radius: 50%;
    width: 4rem;
    height: 4rem;
    cursor: pointer;
    transition: .3s ease-in-out;
}
.theme-button:hover {
    background-color: var(--button-bg-hover);
}
.theme-button__icon {
    color: var(--button-text-color);
}
.light-theme .theme-button__icon--light {
    display: none;
}
.dark-theme .theme-button__icon--dark {
    display: none;
}

/** Hero */
.hero {
    width: 95%;
    margin: 0 auto;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}
.hero__texto {
    max-width: 60rem;
    text-align: center;
    margin: 0;
    margin-bottom: 4rem;
    opacity: 0;
    transform: translateY(30px);
    transition: .3s ease-in-out 500ms;
}
.hero__texto--visible {
    opacity: 1;
    transform: translateY(0);
}
.hero__texto:last-child {
    margin-bottom: 0;
}
.hero__texto--principal {
    font-size: 3.6rem;
}
.hero__texto--sub {
    font-size: 2.4rem;
}
.hero__texto--bold {
    font-weight: bold;
}

/** Cards */
.cards {
}
@media screen and (min-width: 900px) {
    .cards {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
}
@media screen and (min-width: 1200px) {
    .cards {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}
.card {
    width: 35rem;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    margin: 0 auto;
    margin-bottom: 4rem;
}
.card:last-child {
    margin-bottom: 0;
}
.card-body {
    padding: 0 2rem;
    padding-bottom: 2rem;
}
.card__imagen {
    border-radius: 1rem 1rem 0 0;
}
.card__imagen:hover {

}
.card__titulo {
    margin: 2rem 0;
}
.card__desc {
    margin: 0;
    margin-bottom: 2rem;
    font-weight: 500;
}
.card__link {
    display: block;
    width: max-content;
    padding: 1rem 2rem;
    background-color: var(--button-bg);
    color: var(--button-text-color);
    border-radius: 1rem;
    text-decoration: none;
    transition: background .3s ease-in-out;
}
.card__link:hover {
    background-color: var(--button-bg-hover);
}

/** Proyectos  */
.proyecto-tecnologias {
    margin-top: 2rem;
    user-select: none;
}
.proyecto__tecnologia {
    padding: 1rem;
    border-radius: .5rem;
    background-color: var(--color5);
    display: inline-block;
    color: var(--color2);
    font-weight: 600;
    cursor: pointer;
}

/** Footer */
.footer {
    margin-top: 5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    flex-direction: column;
}
.footer .logo {
    margin-bottom: 4rem;
}
.footer__creditos {
    margin: 0;
}

/** Up Button */
.up-button {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--button-bg);
    color: var(--button-text-color);
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    cursor: pointer;
    position: fixed;
    right: 4rem;
    bottom: 4rem;
    transition: .3s ease-in-out;
}
.up-button.ocultar {
    bottom: -4rem;
}
.up-button:hover {
    background-color: var(--button-bg-hover);
}