fizzy/app/assets/stylesheets/terminals.css

@layer components {
  .terminal {
    --row-gap: 0.2lh;

    background-color: var(--color-terminal-bg);
    color: var(--color-terminal-text);
    font-family: var(--font-mono);
    font-size: 0.9em;
    inset: auto 0 0 0;
    max-block-size: 100%;
    padding: var(--block-space) calc(var(--tray-size) + calc(var(--inline-space) * 3)) calc(var(--block-space) + env(safe-area-inset-bottom));
    position: fixed;
    z-index: var(--z-terminal);

    @media (prefers-color-scheme: dark) {
      border-block-start: 1px solid var(--color-ink-lighter);
    }
  }

  .terminal__button {
    --btn-background: var(--color-terminal-bg);
    --btn-color: var(--color-terminal-text);
    --btn-border-radius: 0;
    --btn-border-color: var(--color-terminal-text);
    --btn-padding: 0.1em 0.7em;
    --btn-border-size: 1px;

    font-family: var(--font-mono);
    font-size: var(--text-x-small);
    white-space: nowrap;

    &:where(:not(:active)):focus-visible {
      outline: 2px solid var(--color-terminal-text);
    }
  }

  .terminal__command {
    --btn-background: transparent;
    --btn-color: var(--color-terminal-text);

    font-weight: normal;
    overflow: hidden;
    transition: unset;

    span:first-letter {
      text-transform: capitalize;
    }
  }

  .terminal__container {
    max-block-size: calc(100vh - var(--btn-size) - var(--block-space));
    overflow: auto;
  }

  .terminal__help {
    background: var(--color-terminal-bg);
    border-radius: 1em;
    display: none;

    inline-size: auto;
    inset: 50% auto auto 50%;
    max-inline-size: 90vw;

    padding: calc(var(--block-space) * 1.5) var(--block-space-double);
    position: fixed;
    transform: translate(-50%, -50%);

    .terminal--showing-help &,
    .terminal--open .terminal__menu:empty ~ & {
      display: block;
    }

    h2 {
      border-block-end: 1px dashed;
      font-size: var(--text-normal);
      font-weight: normal;
      margin-block: 0 0.5lh;
      padding-block-end: 0.5lh;
    }

    h3 {
      font-size: var(--text-small);
      margin-block: 0;
      text-transform: uppercase;
    }

    dl {
      display: grid;
      grid-template-columns: min-content 1fr;
      gap: var(--inline-space);
      font-size: var(--text-small);
      margin: 0;
    }

    dt {
      grid-column: 1;
      margin-inline-start: var(--inline-space-double);
      white-space: nowrap;
    }

    dd {
      grid-column: 2;
      white-space: nowrap;
    }
  }

  .terminal__input {
    --input-border-color: transparent;
    --input-border-radius: 0.3em;
    --input-color: var(--color-terminal-text);

    accent-color: var(--color-terminal-text);
    caret-color: var(--color-terminal-text);
    font-family: inherit;
    font-weight: 500;
    text-align: start;

    &.lexical-editor--empty {
      overflow: hidden;
      text-align: center;
      text-overflow: ellipsis;
      white-space: nowrap;

      &:focus-within {
        text-align: start;

        .lexical-editor__content::before {
          inset-inline-start: 0;
          translate: 0 -50%;
        }
      }

      .lexical-editor__content::before {
        color: var(--color-ink);
        inset: 50% auto auto 50%;
        opacity: 0.5;
        overflow: hidden;
        text-overflow: ellipsis;
        transition: 200ms var(--ease-out-expo);
        transition-property: inset-inline-start, translate;
        translate: -50% -50%;
        white-space: nowrap;

        @starting-style {
          inset: 0 0 0 50%;
          transform: translateX(-50%);
        }
      }
    }

    .terminal--busy:is(:not(.terminal--confirmation)) & {
      animation: pulse 1.5s infinite;
    }

    .terminal--confirmation & {
      color: var(--color-terminal-text-light);
    }

    .terminal--error & {
      accent-color: var(--color-negative);
      caret-color: var(--color-negative);
      color: var(--color-negative);
    }

    .lexical-editor__content {
      min-block-size: initial;
      margin: 0;

      b, strong, i, em {
        font-weight: inherit;
        font-style: inherit;
      }

      ul, li {
        list-style: none;
        margin: 0;
        padding: 0;
      }
    }
  }

  .terminal__menu {
    display: none;
    list-style: none;

    .terminal--open & {
      display: flex;
    }

    .terminal--showing-help & {
      display: none;
    }
  }

  .terminal__item {
    &[aria-selected] {
      --btn-color: var(--color-terminal-bg);

      background: var(--color-terminal-text);
      color: var(--color-terminal-bg);
      outline: 2px solid var(--color-terminal-text);

      .terminal__command {
        color: var(--color-terminal-bg);
      }
    }

    @media (any-hover: hover) {
      &:where(:not(:active):hover) {
        background: color-mix(in srgb, var(--color-terminal-text) 20%, var(--color-terminal-bg));
      }
    }
  }

  .terminal__output {
    display: none;
    overflow-y: auto;
    padding-inline: var(--inline-space);

    .terminal--confirmation & {
      color: var(--color-terminal-text-light);
    }

    .terminal--error & {
      color: var(--color-negative);
    }

    .terminal--showing-output & {
      display: block;
    }

    p {
      + ul {
        margin-block-start: 0;
      }

      &:has(+ ul) {
        margin-block-end: 0;
      }
    }
  }

  .terminal__modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto 15rem;
    margin-bottom: 3.55rem;
    height: calc(100vh - 15rem);
  }

  /* Lexical prompt insertions
  /* ------------------------------------------------------------------------ */

  .terminal {
    action-text-attachment:not(.node--selected) {
      --attachment-bg-color: oklch(var(--lch-white) / 15%);
      --attachment-text-color: var(--color-terminal-text);
    }
  }
}