:root {
  --page-max-width: 1920px;
  --font-family-main: "ibm-plex-mono", monospace;

  --text-color-main: #333333;
  --text-color-main-hover: #008000;

  --color-bg-main: #008000;

  --transistion-main: 0.3s ease-in-out;

  --fixed-top-height: 14rem;

  --page-side-padding: 20px;
}

html {
  scroll-behavior: smooth;
  font-size: 10px;
}

body {
  max-width: var(--page-max-width);
  margin: 0 auto;
}

button {
  background-color: transparent;
  border: none;
}

.top {
  width: 100%;
  background-color: #ffffff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  height: var(--fixed-top-height);
  display: flex;
  align-items: center;

  .top__inner {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: var(--page-max-width);
    margin: auto auto;
    padding: 0 var(--page-side-padding);
    .top__logo {
      height: 120px;
      width: auto;
    }

    .top__nav {
      display: flex;
      align-items: center;

      .nav__icon-button {
        .nav__icon-user {
          font-size: 2rem;
        }

        &:hover {
          .nav__icon-user {
            color: var(--text-color-main-hover);
          }
        }
      }

      .mainnav {
        display: flex;
        align-items: center;
        margin-right: 20px;
        justify-content: space-between;

        .hnavi-item {
          width: fit-content;
          display: flex;
          &::marker {
            content: "";
            display: none;
          }

          a {
            position: relative;
            text-decoration: none;
            color: var(--text-color-main);
            font-family: var(--font-family-main);
            font-size: 1.5rem;
            line-height: 1.2;
            margin: 0 15px;
            padding: 10px 0;
            transition: color var(--transistion-main);

            &::after {
              content: "";
              position: absolute;
              bottom: 0;
              left: 0;
              right: 0;
              height: 1px;
              background-color: var(--text-color-main-hover);
              opacity: 0;
              transition: opacity var(--transistion-main);
            }

            &:hover {
              color: var(--text-color-main-hover);

              &::after {
                opacity: 1;
              }
            }
          }
        }
      }
    }
    .nav__mobile-icon {
      display: none;
      align-items: center;
      justify-content: start;

      .nav__icon-button {
        font-size: 2rem;
        &:hover {
          color: var(--text-color-main-hover);
        }
      }
    }
  }
}
@media (max-width: 660px) {
  .top {
    .top__inner {
      display: grid;
      grid-template-columns: repeat(3, 1fr);

      .top__logo-link {
        grid-row: 1;
        grid-column: 2;
        justify-self: center;
        .top__logo {
        }
      }

      .top__nav {
        grid-column: 3;
        grid-row: 1;
        justify-content: end;
        .nav__icon-button {
          .nav__icon-user {
          }

          &:hover {
            .nav__icon-user {
            }
          }
        }

        .mainnav {
          display: none;
          .hnavi-item {
            &::marker {
            }

            a {
              &::after {
              }

              &:hover {
                &::after {
                }
              }
            }
          }
        }
      }
      .nav__mobile-icon {
        display: flex;
      }
    }
  }
}

.user-interface {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  opacity: 0;
  pointer-events: none;
  z-index: 1001;
  transition: opacity var(--transistion-main);
  .user-interface__inner {
    transform: translateX(100%);
    transition: transform var(--transistion-main);
    width: 250px;
    height: 100%;
    margin-left: auto;
    background-color: #ffffff;
    box-shadow: -2px 0 4px rgba(0, 0, 0, 0.1);
  }
}

.user-interface-opened .user-interface {
  opacity: 1;
  pointer-events: auto;
  .user-interface__inner {
    pointer-events: auto;
    transform: translateX(0);
  }
}

.mobile-menu {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  z-index: 1002;
  transition: opacity var(--transistion-main);
  .mobile-menu__inner {
    transform: translateY(100%);
    transition: transform var(--transistion-main);
    width: 100%;
    height: 400px;
    margin: 0 40px;
    background-color: #ffffff;
    box-shadow: 2px 0 4px rgba(0, 0, 0, 0.1);

    .mobile-menu__close-button {
      display: flex;
      justify-content: end;
      padding: 10px 20px;
      pointer-events: all;
      cursor: pointer;

      .mobile-menu__icon-close {
        font-size: 2rem;
        &:hover {
          color: var(--text-color-main-hover);
        }
      }
    }
  }
}

.mobile-menu-opened .mobile-menu {
  opacity: 1;
  pointer-events: auto;
  .mobile-menu__inner {
    pointer-events: auto;
    transform: translateX(0);
  }
}