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

a {
  color: unset;
  text-decoration: unset;
}

p {
  line-height: 1.5;
  color: var(--light-text-2);
}

html {
  background: #fff;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  background: var(--dark-bg-2);
}

:root {
  --dark-bg-1: #272727;
  --dark-bg-2: #4a1b77;
  --light-bg: #f7f7f7;
  --primary: #7f9ffc;
  --light-text-1: #fafbfc;
  --light-text-2: #d2d2d2;
  --dark-text-1: #1a1a1a;
  --dark-text-2: #4e4b66;
  --subtitle: #707070;

  --ff: "Open Sans";
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--ff);
  color: var(--light-text-1);
}

li,
textarea,
input,
label,
button,
span,
a,
p {
  font-family: var(--ff);
}

picture {
  display: block;
  overflow: hidden;
  margin-inline: auto;
  
}

picture img {
  width: 100%;
  height: 100%;
}

.text-highlight-primary {
  color: var(--primary);
}

@media (min-width: 0px) {
  header {
    background: var(--dark-bg-1);
  }

  nav {
    padding-block: 0.5rem;
    padding-inline: 1rem;
    text-align: center;
  }

  nav .logo {
    color: var(--light-text-1);
    font-weight: 700;
    font-size: 18px;
  }

  .wrapper {
    margin-inline: auto;
  }

  section {
    padding-inline: 1rem;
    padding-top: 1rem;
  }

  .hero .wrapper {
    text-align: center;
  }

  .hero .wrapper h1 {
    margin-bottom: 1rem;
    font-weight: 900;
    font-size: 24px;
    text-transform: uppercase;
    color: var(--light-text-1);
  }

  .hero .wrapper .subtitle {
    font-size: 14px;
    color: var(--light-text-2);
    font-weight: 400;
    font-style: italic;
  }

  .form-section form {
    display: grid;
    gap: 0.5rem;
  }

  .form-section form label {
    display: grid;
    gap: 0.25rem;
    font-size: 14px;
    font-weight: 500;
    color: var(--light-text-2);
  }

  .form-section form label span::after {
    content: " *";
    display: inline;
    color: indianred;
  }

  .form-section form label input {
    padding: 0.75rem;
    border: 1px solid var(--subtitle);
    border-radius: 0.5rem;
  }

  .form-section form button {
    display: inline-block;
    line-height: 2.5rem;
    background: var(--primary);
    color: var(--dark-text-1-text-1);
    border: none;
    border-radius: 1rem;
    margin-top: 0.5rem;
    font-weight: 700;
    text-transform: capitalize;
    font-size: 16px;
    cursor: pointer;
  }

  .form-section form button:hover {
    filter: brightness(1.15);
  }

  .wrapper ul li {
    list-style-type: none; /* remove default bullets */
    position: relative;
    padding-left: 0.75rem;
    color: var(--light-text-2);
    line-height: 1.5;
    font-size: 16px;
  }

  li::before {
    content: "•";
    position: absolute;
    left: 0;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    color: var(--light-bg-1);
  }
  
  main section:nth-last-child(1) {
    padding-bottom: 2rem;
  }
  
  .about{
    text-align: center;
  }
  
  .about h2{
    margin-bottom: 1.5rem;
  }
  
  .about p{
    margin-bottom: 1rem;
  }

  footer {
    background: var(--dark-bg-1);
    color: var(--light-text-1);
    padding-block: 1rem;
    text-align: center;
    font-size: 12px;
  }
}

@media (min-width: 768px) {
  .hero .wrapper h1 {
    font-size: 48px;
    max-width: 20ch;
    margin-inline: auto;
  }

  .picture-section {
    max-width: 60%;
    margin-inline: auto;
  }

  .wrapper {
    max-width: 640px;
    margin-inline: auto;
  }

  .bullet-section ul li {
    line-height: 1.7;
  }

  form,
  .bullet-section {
    max-width: 600px;
    margin-inline: auto;
  }

  .bullet-section .wrapper {
    margin: 0;
  }
}

@media (min-width: 1024px) {
  section {
    padding-inline: 1rem;
    padding-top: 2rem;
  }

  .wrapper {
    margin-inline: auto;
  }
}

@media (min-width: 1440px) {
}