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

:root {
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --link: #4f46e5;
  --border: #e2e8f0;
  --gap-link: 20px;
  @media (prefers-color-scheme: dark) {
    --bg: #0f172a;
    --bg-card: #1e293b;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --link: #818cf8;
    --border: #334155;
  }
}

body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  & .frame {
    max-width: 1024px;
    margin: 10px;
    border: 1px solid var(--border);
  }
  & a {
    text-decoration: none;
    color: var(--link);
    &:not(div.logo > a):hover {
      text-decoration: underline;
    }
  }
  & h2 {
    font-size: 1.4rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: 5px;
  }
  & p {
    color: var(--text-muted);
  }
  & li {
    list-style: none;
  }
}

header {
  margin: 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: space-between;
  gap: 8px;
  & div.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
}

nav.navigation {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0 var(--gap-link);
  & a {
    font-size: 0.875rem;
    color: var(--link);
    position: relative;
    & + a::before {
      content: "/";
      position: absolute;
      left: calc(var(--gap-link) / -2 + -3px);
    }
  }
}

main {
  margin: 15px;
  & section {
    align-items: center;
    padding-bottom: 30px;
    &.hero {
      max-width: 800px;
      margin: 0 auto;
      text-align: center;
      & h1 {
        font-size: 2rem;
        font-weight: 600;
      }
      & .job {
        color: var(--text-muted);
        border-bottom: 1px solid var(--border);
        margin-bottom: 15px;
      }
    }
    &.about-me {
      max-width: 800px;
      margin: 0 auto;
    }
    &.featured {
      display: flex;
      flex-direction: row;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      & time {
        display: block;
        font-size: 0.8rem;
        color: var(--text-muted);
      }
      & article {
        max-width: 300px;
        padding: 10px;
        background-color: var(--bg-card);
        border: 2px solid var(--border);
        border-radius: 8px;
        &:hover {
          border-color: var(--text);
        }
        & p + p {
          margin-top: 5px;
        }
        & h3 {
          font-size: 1.2rem;
          font-weight: 600;
          text-align: center;
        }
        & h2 {
          text-align: left;
        }
        & li {
          font-size: 0.875rem;
          padding-left: 15px;
          position: relative;
          &::before {
            content: ">";
            position: absolute;
            left: 0;
          }
        }
      }
    }
  }
  & form.contact {
    margin: 0 auto;
    max-width: 450px;
    & fieldset {
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      & div {
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 15px;
        width: 100%;
        & label {
          width: 80px;
          font-size: 0.9rem;
          font-weight: 500;
        }
        & input,
        & textarea {
          flex: 1;
          padding: 6px 10px;
          border: 1px solid var(--border);
          border-radius: 4px;
        }
        & textarea {
          min-height: 80px;
          resize: vertical;
        }
      }
      & button {
        align-self: flex-end;
        background-color: var(--link);
        padding: 8px;
        cursor: pointer;
        color: var(--bg);
        border: none;
        border-radius: 4px;
      }
    }
  }
}

footer {
  margin: 15px;
  text-align: center;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  & div.reviews {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
    & figure {
      max-width: 300px;
      padding-left: 10px;
      & blockquote {
        & p {
          font-size: 1.2rem;
          font-style: italic;
          color: var(--text-muted);
          &::before {
            content: "“";
          }
          &::after {
            content: "”";
          }
        }
      }
      & figcaption {
        margin-top: 10px;
        letter-spacing: 0.05em;
        & cite {
          font-style: normal;
          text-transform: uppercase;
          font-weight: bold;
        }
        & small {
          display: block;
          color: var(--text-muted);
          font-size: 0.75rem;
          margin-top: 10px;
        }
      }
    }
  }
}

@media (width >= 768px) {
  header {
    flex-direction: row;
    & div.logo {
      flex-direction: row;
    }
  }
}

@media (width >= 1044px) {
  body .frame {
    margin: 10px auto;
  }
}