/* Corpo */

html,
body,
figure,
img,
div,
input,
textarea,
p,
h1,
h2,
h3,
h4,
h5,
h6,
ul,
li,
a,
main {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  list-style: none;
  text-decoration: none;
}

.column {
  flex-basis: 49%;
}

:root {
  --gray-light: #d4e9ff;
  --blue: #26619c;
  --white: #fff;
  --gray: #636363;
  --black: #000;
  --dark-mode: #0e0e0e;
  --row-light: rgb(255 255 255 / 20%);
  --font-family: "Open Sans", sans-serif;
}

.hidden {
  display: none;
}

body {
  font-family: var(--font-family);
}

/* Header */

header {
  background-color: var(--blue);
  padding: 30px 30px 0;
}

header .container {
  background-color: var(--white);
}

header .row {
  align-items: center;
}

header .column-left {
  flex-basis: 30%;
}

header .column-right {
  flex-basis: 60%;
  text-align: center;
}

header .column img {
  max-width: 100%;
}

header .column h1 {
  font-size: 1.5rem;
  color: var(--black);
}

header .column p {
  font-size: 1rem;
  color: var(--gray);
}

header .column ul {
  margin-top: 16px;
}

header .column ul li {
  margin-bottom: 12px;
}

header .column ul li a {
  font-size: 1rem;
  color: var(--black);
}

/* Rodapé */

footer {
  background-color: var(--blue);
}

footer .container {
  padding: 20px;
}

footer nav ul li a {
  color: var(--white);
}

footer nav .info-contact li {
  margin-bottom: 15px;
}

footer nav .social-network {
  border-top: 1px solid var(--row-light);
  margin-top: 20px;
  margin-bottom: 50px;
  padding-top: 50px;
  text-align: center;
}

footer nav .social-network li {
  margin: 15px 28px;
  text-align: center;
  display: inline-block;
}

footer nav .social-network li a img {
  width: 40px;
  transition: 0.2s;
}

footer nav .social-network li a:hover img {
  transform: scale(1.2) translateY(-10px);
}

/* Página principal */

main .column {
  padding: 20px;
}

main .column section {
  border-bottom: 1px solid var(--gray-light);
  margin: 0 0 20px;
  min-height: 187px;
  color: var(--black);
}

main .column section h2 {
  font-size: 1.3rem;
  margin: 0 0 15px;
}

main .column section p {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.5;
}

main .column section ul li {
  margin: 0 0 12px;
}
main .column section ul li h3 {
  font-size: 1.1rem;
}
main .column section ul li strong {
  font-size: 0.9rem;
  font-weight: 500;
  margin: 5px 0 10px;
  display: inline-block;
}

/* Dark mode */

.active-dark-mode {
  width: 50px;
  height: 50px;
  display: none;
}

header .container {
  position: relative;
}

label {
  position: absolute;
  top: 30px;
  right: 30px;
  width: 52px;
  height: 30px;
  background-color: var(--black);
  border-radius: 20px;
  padding: 5px 5px;
  box-sizing: border-box;
  cursor: pointer;
}

label span {
  width: 20px;
  height: 20px;
  display: block;
  background-color: var(--gray-light);
  border-radius: 100%;
  transition: all ease 0.3s;
}

.active-dark-mode:checked ~ .dark-mode label {
  background: var(--gray-light);
}

.active-dark-mode:checked ~ .dark-mode label span {
  background-color: var(--black);
  transform: translateX(21px);
  transition: all ease 0.3s;
}

.active-dark-mode:checked ~ .dark-mode {
  --blue: #000;
  --white: #fff;
  --black: #d4e9ff;
}

.active-dark-mode:checked ~ .dark-mode header {
  background-color: var(--blue);
}
.active-dark-mode:checked ~ .dark-mode header .container {
  background-color: var(--dark-mode);
}
.active-dark-mode:checked ~ .dark-mode .container {
  background-color: var(--dark-mode);
}
.active-dark-mode:checked ~ .dark-mode main {
  background-color: var(--blue);
}

@keyframes aumentarLargura {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes aumentarAltura {
  from {
    height: 0;
  }
  to {
    height: 100%;
  }
}

/* Responsividade */

@media only screen and (min-width: 768px) {
  .row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
  }
  footer nav .social-network {
    display: flex;
    justify-content: center;
  }

  header {
    padding: 30px 0 0;
  }

  header .column img {
    max-width: 250px;
    border-radius: 100%;
  }
  .container {
    width: 100%;
    max-width: 1125px;
    margin: 0 auto;
    padding: 30px;
  }
  header .column-right {
    text-align: left;
  }
  main .column section {
    border: 2px solid transparent;
    padding: 20px;
    position: relative;
  }
  main .column section span {
    position: absolute;
    display: block;
    width: 0;
    height: 0;
    border: 2px solid transparent;
  }
  main .column section .high-right {
    top: -2px;
    left: -2px;
    animation-name: aumentarLargura, aumentarAltura;
    animation-duration: 1s, 1s;
    animation-delay: 2s, 3s;
    animation-fill-mode: forwards;
    border-top-color: var(--gray-light);
    border-right-color: var(--gray-light);
  }

  main .column section .down-left {
    bottom: -2px;
    right: -2px;
    animation-name: aumentarLargura, aumentarAltura;
    animation-duration: 1s, 1s;
    animation-delay: 4s, 5s;
    animation-fill-mode: forwards;
    border-bottom-color: var(--gray-light);
    border-left-color: var(--gray-light);
  }
  main .column {
    padding: 0;
  }
  footer nav .social-network li {
    margin: 0 14px;
    text-align: center;
    display: initial;
  }
}

@media only screen and (min-width: 991px) {
  header .column-right {
    flex-basis: 70%;
  }
}