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Component Skill — components/session-item/component-skill.md

Native basis

An <article>: a time column (<time> start, end, duration), the track (colored by --mk-session-color), title, description, speakers (Avatars) and room, and a checkbox labelled "Add ... to my schedule".

Built from

Avatar.

Web Platform APIs

<time>:has()<article>Container queries

Classes

.mk-session-item.mk-session-item-time.mk-session-item-body.mk-session-item-track.mk-session-item-title.mk-session-item-desc.mk-session-item-speakers.mk-session-item-room.mk-session-item-save.mk-session-item-save-on.mk-session-item-save-off

Data attributes

data-variant: keynote, break; --mk-session-color for the track.

§Agenda

A day of sessions: time column, track in its color (--mk-session-color), title, speakers, room and an "Add" toggle - a real checkbox, :has(:checked) swaps it to "Added". A keynote (data-variant="keynote") and a break (data-variant="break") are styled apart.

§CSS view file

/* -- Session Item (website · Events & Promotions) -------------------------
   Presents one scheduled session with its time, topic, and speakers - with its track, room and an "add to my schedule" toggle; breaks and keynotes styled apart. */
@layer components {
  /* every box in the block measures border-box - the same on any page */
  :where(.mk-session-item, .mk-session-item *, .mk-session-item ::before, .mk-session-item ::after) {
    box-sizing: border-box;
  }
  .mk-session-item {
    --mk-session-color: var(--chart-1);
    display: grid;
    grid-template-columns: 4.5rem minmax(0, 1fr) auto;
    align-items: start;
    gap: 1rem 1.5rem;
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-inline-start: 3px solid var(--mk-session-color);
    border-radius: var(--radius-lg);
    background: var(--card);
  }
  .mk-session-item-time {
    display: grid;
    font-variant-numeric: tabular-nums;
    line-height: 1.3;
    & time {
      font-size: 1.0625rem;
      font-weight: 700;
    }
    & span {
      color: var(--muted-foreground);
      font-size: 0.875rem;
    }
    & small {
      margin-block-start: 0.25rem;
      color: var(--muted-foreground);
      font-size: 0.75rem;
    }
  }
  .mk-session-item-body {
    display: grid;
    gap: 0.5rem;
  }
  .mk-session-item-track {
    width: fit-content;
    padding: 0.0625rem 0.5rem;
    border-radius: 999px;
    background: color-mix(in oklch, var(--mk-session-color) 15%, transparent);
    color: color-mix(in oklab, var(--mk-session-color) 70%, var(--foreground));
    font-size: 0.75rem;
    font-weight: 700;
  }
  .mk-session-item-title {
    margin: 0;
    font-size: 1.0625rem;
    font-weight: 600;
    text-wrap: balance;
  }
  .mk-session-item-desc {
    margin: 0;
    color: var(--muted-foreground);
    font-size: 0.9375rem;
    line-height: 1.6;
    text-wrap: pretty;
  }
  .mk-session-item-speakers {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 0.875rem;
    font-weight: 500;
    & li {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
  }
  .mk-session-item-room {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--muted-foreground);
    font-size: 0.8125rem;
    & svg {
      width: 0.875rem;
      height: 0.875rem;
    }
  }
  /* the save toggle: a checkbox in a button-like label */
  .mk-session-item-save {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 2rem;
    padding-inline: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    & input {
      position: absolute;
      inset: 0;
      margin: 0;
      opacity: 0;
      cursor: pointer;
    }
    & span {
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }
    & svg {
      width: 0.875rem;
      height: 0.875rem;
    }
    & .mk-session-item-save-on {
      display: none;
    }
    &:has(input:checked) {
      border-color: var(--primary);
      background: var(--primary);
      color: var(--primary-foreground);
    }
    &:has(input:checked) .mk-session-item-save-off {
      display: none;
    }
    &:has(input:checked) .mk-session-item-save-on {
      display: inline-flex;
    }
    &:has(input:focus-visible) {
      outline: 2px solid var(--ring);
      outline-offset: 2px;
    }
  }
  .mk-session-item[data-variant="keynote"] {
    border-color: color-mix(in oklab, var(--mk-session-color) 40%, var(--border));
    background: color-mix(in oklab, var(--mk-session-color) 8%, var(--card));
    & .mk-session-item-title {
      font-size: 1.375rem;
      letter-spacing: -0.02em;
    }
  }
  .mk-session-item[data-variant="break"] {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    padding-block: 0.75rem;
    border-style: dashed;
    border-inline-start: 1px dashed var(--border);
    background: transparent;
    color: var(--muted-foreground);
    & .mk-session-item-title {
      font-size: 0.9375rem;
      font-weight: 500;
    }
    & .mk-session-item-time time {
      font-size: 0.9375rem;
      font-weight: 600;
    }
  }
  /* -- Accessibility ------------------------------------------- */
  @media (forced-colors: active) {
    .mk-session-item {
      border-inline-start-color: CanvasText;
    }
    .mk-session-item-save:has(input:checked) {
      background: Highlight;
      color: HighlightText;
    }
  }
}

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