/* -- Video component ------------------------------------------ */
/* A native <video> in a frame of its ratio, a captions overlay   */
/* the runtime fills from the active cue, and a control bar of    */
/* Buttons, Sliders and readouts (data-video-action / -output).   */
/* data-variant="overlay" lays the bar over the picture; it hides */
/* while the video plays and nothing points at it.                */
@layer components {
  .video {
    --video-ratio: 16 / 9;

    position: relative;
    display: grid;
    margin: 0;
    inline-size: 100%;
    min-inline-size: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background-color: var(--card);
    color: var(--card-foreground);
    container-type: inline-size;
  }

  .video-frame {
    position: relative;
    aspect-ratio: var(--video-ratio);
    background-color: #000;

    & > video {
      display: block;
      inline-size: 100%;
      block-size: 100%;
      object-fit: contain;
    }
  }

  /* the active cue - empty when captions are off or nothing is said */
  .video-captions {
    position: absolute;
    inset-inline: 0;
    inset-block-end: 0.75rem;
    inline-size: fit-content;
    max-inline-size: 90%;
    margin-inline: auto;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    background-color: rgb(0 0 0 / 0.75);
    color: #fff;
    font-size: clamp(0.8125rem, 3.4cqi, 1.375rem);
    line-height: 1.35;
    text-align: center;
    white-space: pre-line;
    text-wrap: balance;
    pointer-events: none;

    &:empty {
      display: none;
    }
  }

  .video-controls {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    min-inline-size: 0;
    padding: 0.375rem 0.5rem;
    border-block-start: 1px solid var(--border);

    & > [data-video-action="seek"] {
      flex: 1;
      min-inline-size: 3rem;
    }

    & > [data-video-action="volume"] {
      inline-size: 4.5rem;
    }
  }

  /* a readout: m:ss in even digits, so the bar does not jitter */
  .video-time {
    min-inline-size: 2.5rem;
    color: var(--muted-foreground);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-variant-numeric: tabular-nums;
    text-align: center;
  }

  /* a toggle with two icons shows the first when off, the second when on (play / pause, sound / muted) */
  [data-video-action][aria-pressed="false"] > :nth-child(2),
  [data-video-action][aria-pressed="true"] > :nth-child(1):not(:only-child) {
    display: none;
  }

  /* a control the page may not use (full screen in a frame without it) - over the Button's own display */
  [data-video-action][hidden] {
    display: none;
  }

  /* a rate select keeps its own width in the row (a Select is as wide as its box) */
  select[data-video-action="rate"] {
    flex: none;
    inline-size: auto;
  }

  /* the sound button with a vertical volume in a panel above it (below with data-side="bottom"), shown while the
     pointer or the focus is on either - the row keeps one button's width */
  .video-volume {
    position: relative;
    display: inline-flex;
  }

  .video-volume-panel {
    position: absolute;
    inset-block-end: 100%;
    inset-inline-start: 50%;
    z-index: 3;
    display: grid;
    place-items: center;
    margin-block-end: 0.375rem;
    padding: 0.75rem 0.625rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--popover);
    box-shadow: var(--shadow-md);
    translate: -50% 0;
    visibility: hidden;
    opacity: 0;

    /* the gap to the button belongs to the hover */
    &::after {
      position: absolute;
      inset-inline: 0;
      inset-block-start: 100%;
      block-size: 0.5rem;
      content: "";
    }

    /* a vertical range's block axis is horizontal: its length is its height */
    & > .slider[data-orientation="vertical"] {
      height: 5.5rem;
    }

    .video-volume:is(:hover, :focus-within) > & {
      visibility: visible;
      opacity: 1;
    }

    .video-volume[data-side="bottom"] > & {
      inset-block: 100% auto;
      margin-block: 0.375rem 0;

      &::after {
        inset-block: auto 100%;
      }
    }
  }

  /* the bar over the picture: a dark scrim, light controls */
  .video[data-variant="overlay"] {
    & > .video-controls {
      --foreground: #fff;
      --muted-foreground: rgb(255 255 255 / 0.8);
      --accent: rgb(255 255 255 / 0.16);
      --accent-foreground: #fff;
      --primary: #fff;
      --primary-foreground: #000;
      --input: rgb(255 255 255 / 0.35);

      position: absolute;
      inset-inline: 0;
      inset-block-end: 0;
      padding-block-start: 1.5rem;
      border-block-start: 0;
      background-image: linear-gradient(to bottom, transparent, rgb(0 0 0 / 0.72));
      color: #fff;
    }

    & .video-volume-panel {
      border-color: rgb(255 255 255 / 0.2);
      background-color: rgb(0 0 0 / 0.78);
    }

    /* the captions sit above the bar while it shows */
    &:is(:hover, :focus-within, :not([data-state-name="playing"])) .video-captions {
      inset-block-end: 3.25rem;
    }

    &[data-state-name="playing"]:not(:hover, :focus-within) > .video-controls {
      opacity: 0;
    }
  }

  /* full screen: the picture takes what the bar leaves */
  .video:fullscreen {
    display: flex;
    flex-direction: column;
    border: 0;
    border-radius: 0;
    background-color: #000;

    & > .video-frame {
      flex: 1;
      aspect-ratio: auto;
    }
  }

  /* a narrow player keeps play, the scrubber, the time and the sound */
  @container (inline-size < 26rem) {
    .video-controls > [data-video-action="volume"],
    .video-controls > [data-video-output="duration"],
    .video-controls > [data-video-action="skip"] {
      display: none;
    }
  }

  @media (prefers-reduced-motion: no-preference) {
    .video[data-variant="overlay"] {
      & > .video-controls {
        transition: opacity 0.2s ease;
      }

      & .video-captions {
        transition: inset-block-end 0.2s ease;
      }
    }

    .video-volume-panel {
      transition:
        opacity 0.15s ease,
        visibility 0.15s allow-discrete;
    }
  }

  @media (prefers-contrast: more) {
    .video-captions {
      background-color: #000;
    }

    .video-time {
      color: var(--foreground);
    }
  }

  @media (forced-colors: active) {
    .video {
      border-color: CanvasText;
    }

    .video-captions {
      border: 1px solid CanvasText;
      background-color: Canvas;
      color: CanvasText;
      forced-color-adjust: none;
    }

    .video[data-variant="overlay"] > .video-controls {
      background: Canvas;
      opacity: 1;
    }

    .video-volume-panel {
      border-color: CanvasText;
      background-color: Canvas;
    }
  }
}