/*
  taste-skill UI fragment kit - shared base.
  Small pieces of real product UI, set on an effect ground inside a card's inset panel.
  The standard (references/cards.md): true product scale (13px text, 12px meta, never under 11px).
  A fragment is a picture of a product's screen, so the page's 13px floor (VI-05) does not apply
  inside .ui; every word the page itself says (titles, lines, labels, captions) keeps 13px or more.
  The rest:
  real-looking data, crisp 1px borders, radius 10-12, a soft layered shadow, one accent touch
  (the agent's mark is the ink, so the accent stays free for that one touch).

  Styled only by custom properties set by the page:
    --ui-font, --ui-mono, --ui-radius
    --fx-bg (the fragment's own surface), --fx-surface, --fx-ink, --fx-muted, --fx-accent, --fx-accent-ink
  Light or dark is read from --fx-bg itself (relative colour), so a fragment needs no theme class.
  Every size sits on a 4px grid. Loops stop under prefers-reduced-motion (the JS shows a still state).
*/
:where(.ui) {
    --u-bg: var(--fx-bg, #ffffff);
    --u-surface: var(--fx-surface, #f4f4f3);
    --u-ink: var(--fx-ink, #111111);
    --u-muted: var(--fx-muted, #6b6b6b);
    --u-accent: var(--fx-accent, #e8571f);
    --u-accent-ink: var(--fx-accent-ink, #ffffff);
    --u-r: var(--ui-radius, 12px);
    --u-r2: max(4px, calc(var(--u-r) - 4px));
    --u-r3: max(4px, calc(var(--u-r) - 6px));

    /* lines and fills, all mixed from the palette */
    --u-line: color-mix(in oklab, var(--u-ink) 9%, transparent);
    --u-line-2: color-mix(in oklab, var(--u-ink) 15%, transparent);
    --u-border: color-mix(in oklab, var(--u-ink) 12%, transparent);
    --u-fill: color-mix(in oklab, var(--u-ink) 3.5%, var(--u-bg));
    --u-fill-2: color-mix(in oklab, var(--u-ink) 7%, var(--u-bg));
    --u-fill-3: color-mix(in oklab, var(--u-ink) 11%, var(--u-bg));
    --u-text-2: color-mix(in oklab, var(--u-ink) 80%, var(--u-bg));
    --u-soft: color-mix(in oklab, var(--u-muted) 80%, var(--u-bg));
    --u-tint: color-mix(in oklab, var(--u-accent) 13%, var(--u-bg));
    --u-tint-2: color-mix(in oklab, var(--u-accent) 24%, var(--u-bg));
    --u-accent-text: color-mix(in oklab, var(--u-accent) 74%, var(--u-ink));
    --u-skel: color-mix(in oklab, var(--u-ink) 10%, var(--u-bg));
    /* a brand tile is light on every surface, so a logo keeps its own colours (references/icons.md) */
    --u-tile: #ffffff;
    --u-tile-edge:
        inset 0 0 0 1px rgb(0 0 0 / 0.09), 0 1px 2px rgb(0 0 0 / 0.12);

    /* depth: shadows grow and a top highlight appears as the fragment surface gets darker */
    --u-sh: rgb(0 0 0 / 0.14);
    --u-sh: oklch(from var(--u-bg) 0 0 0 / calc(0.5 - l * 0.38));
    --u-hi: transparent;
    --u-hi: oklch(
        from var(--u-bg) 1 0 0 / clamp(0, calc(0.11 - l * 0.11), 0.09)
    );
    --u-shadow:
        inset 0 1px 0 var(--u-hi),
        0 1px 1px color-mix(in oklab, var(--u-sh) 40%, transparent),
        0 2px 4px -1px color-mix(in oklab, var(--u-sh) 45%, transparent),
        0 12px 24px -8px color-mix(in oklab, var(--u-sh) 80%, transparent),
        0 32px 64px -24px var(--u-sh);
    --u-shadow-sm:
        inset 0 1px 0 var(--u-hi),
        0 1px 2px color-mix(in oklab, var(--u-sh) 55%, transparent),
        0 6px 16px -6px color-mix(in oklab, var(--u-sh) 80%, transparent);
    --u-ease: var(
        --ease,
        cubic-bezier(0.2, 0.8, 0.2, 1)
    ); /* the page's one UI ease-out (system.css --ease) */
    /* the name is older than the rule: a strong ease-out that lands softly and never passes its mark (no overshoot, motion.md) */
    --u-spring: cubic-bezier(0.22, 1, 0.36, 1);

    font-family: var(
        --ui-font,
        system-ui,
        -apple-system,
        'Segoe UI',
        sans-serif
    );
    font-size: 13px;
    line-height: 20px;
    font-weight: 400;
    color: var(--u-ink);
    -webkit-font-smoothing: antialiased;
    font-feature-settings:
        'tnum' 1,
        'cv11' 1;
    text-align: left;
    letter-spacing: -0.003em;
    box-sizing: border-box;
}
:where(.ui) *,
:where(.ui) *::before,
:where(.ui) *::after {
    box-sizing: border-box;
}
/* a fragment never runs out of its panel on its own: on a narrow panel it narrows; a placement that
   crops it on purpose (cards.css, from 640px: every placement but .at-center) lifts this */
[data-ui] {
    max-width: 100%;
}
/* fragments use div and span for text so page rules like `.card p` cannot reach them */
.ui :where(ul, ol, li, figure, blockquote, article, aside, nav) {
    margin: 0;
    padding: 0;
    list-style: none;
}
.ui :where(mark) {
    background: none;
    color: inherit;
}
:where(.ui) button {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    padding: 0;
    margin: 0;
    cursor: default;
}
:where(.ui) svg {
    display: block;
    flex: none;
}

/* ---------------------------------------------------------------- the window every fragment sits in */
.ui-panel {
    position: relative;
    background: var(--u-bg);
    border: 1px solid var(--u-border);
    border-radius: var(--u-r);
    box-shadow: var(--u-shadow);
    max-width: 100%;
}
.ui-head {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 44px;
    padding: 0 12px 0 16px;
    border-bottom: 1px solid var(--u-line);
}
.ui-title {
    font-size: 13px;
    font-weight: 500;
    line-height: 20px;
    white-space: nowrap;
}
.ui-meta {
    font-size: 13px;
    line-height: 16px;
    color: var(--u-muted);
    white-space: nowrap;
}
.ui-spacer {
    flex: 1;
}
.ui-sep {
    width: 1px;
    height: 16px;
    background: var(--u-line-2);
    flex: none;
}

/* window chrome: three quiet dots and a centred title */
.ui-dots {
    display: flex;
    gap: 6px;
    flex: none;
}
.ui-dots i {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--u-fill-3);
    box-shadow: inset 0 0 0 0.5px var(--u-line);
}

/* ---------------------------------------------------------------- controls */
/* the primary button is the ink (as on figma.com and x.ai); the accent is kept for one touch */
.ui-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    flex: none;
    height: 28px;
    padding: 0 10px;
    border-radius: max(6px, var(--u-r3));
    font-size: 13px;
    font-weight: 500;
    line-height: 1;
    white-space: nowrap;
    background: var(--u-ink);
    color: var(--u-bg);
    box-shadow:
        inset 0 1px 0 color-mix(in oklab, var(--u-bg) 14%, transparent),
        0 1px 2px color-mix(in oklab, var(--u-sh) 60%, transparent);
    transition:
        transform 160ms var(--u-ease),
        background-color 200ms var(--u-ease),
        color 200ms var(--u-ease);
}
.ui-btn--accent {
    background: var(--u-accent);
    color: var(--u-accent-ink);
}
.ui-btn--ghost {
    background: var(--u-bg);
    color: var(--u-ink);
    box-shadow:
        inset 0 0 0 1px var(--u-line-2),
        0 1px 2px color-mix(in oklab, var(--u-sh) 30%, transparent);
}
.ui-btn--quiet {
    background: transparent;
    color: var(--u-muted);
    box-shadow: none;
}
.ui-btn--sm {
    height: 24px;
    padding: 0 8px;
    font-size: 13px;
}
.ui-btn .ui-icon {
    width: 14px;
    height: 14px;
}
.ui-btn.is-pressed {
    transform: scale(0.96);
}

/* status: a dot and a word; quiet by default, the accent only where something is happening */
.ui-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex: none;
    height: 22px;
    padding: 0 8px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    line-height: 1;
    white-space: nowrap;
    background: var(--u-fill);
    color: var(--u-muted);
    box-shadow: inset 0 0 0 1px var(--u-line);
}
.ui-chip::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.55;
    flex: none;
}
.ui-chip--plain::before {
    display: none;
}
.ui-chip--accent {
    background: var(--u-tint);
    color: var(--u-accent-text);
    box-shadow: inset 0 0 0 1px
        color-mix(in oklab, var(--u-accent) 22%, transparent);
}
.ui-chip--accent::before {
    background: var(--u-accent);
    opacity: 1;
}
.ui-chip--ink {
    color: var(--u-ink);
}
.ui-chip--ink::before {
    opacity: 1;
}
.ui-chip--live::before {
    animation: ui-live 1.6s var(--u-ease) infinite;
}
.ui-chip svg {
    width: 12px;
    height: 12px;
    margin: 0 -1px 0 -2px;
}
.ui-chip:has(svg)::before {
    display: none;
}
@keyframes ui-live {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.35;
    }
}

.ui-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--u-accent);
    flex: none;
}
.ui-kbd {
    display: inline-grid;
    place-items: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: 5px;
    font: 500 13px/1 var(--ui-font, inherit);
    color: var(--u-muted);
    background: var(--u-bg);
    box-shadow:
        inset 0 0 0 1px var(--u-line-2),
        inset 0 -1px 0 var(--u-line);
}
.ui-icon {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* people: initials on a quiet tone, five tones that never reach violet */
.ui-avatar {
    --h: 60;
    display: grid;
    place-items: center;
    flex: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 13px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: -0.02em;
    background: color-mix(in oklab, oklch(0.74 0.08 var(--h)) 34%, var(--u-bg));
    color: color-mix(in oklab, oklch(0.5 0.09 var(--h)) 70%, var(--u-ink));
    box-shadow: inset 0 0 0 1px
        color-mix(in oklab, oklch(0.6 0.08 var(--h)) 22%, transparent);
}
.ui-avatar[data-tone='1'] {
    --h: 40;
}
.ui-avatar[data-tone='2'] {
    --h: 85;
}
.ui-avatar[data-tone='3'] {
    --h: 150;
}
.ui-avatar[data-tone='4'] {
    --h: 220;
}
.ui-avatar[data-tone='5'] {
    --h: 20;
}
.ui-avatar--md {
    width: 32px;
    height: 32px;
    font-size: 13px;
}
.ui-avatar--accent {
    background: var(--u-accent);
    color: var(--u-accent-ink);
    box-shadow: none;
}

/* the product's own mark (an assistant, a bot): an ink disc with a four-point spark. It is the ink,
   not the accent, so a fragment's one accent touch stays free for its status */
.ui-agent {
    position: relative;
    display: block;
    flex: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--u-ink);
    box-shadow:
        inset 0 0 0 1px color-mix(in oklab, var(--u-bg) 12%, transparent),
        inset 0 1px 0 color-mix(in oklab, #fff 16%, transparent);
}
.ui-agent::after {
    content: '';
    position: absolute;
    inset: 26%;
    background: var(--u-bg);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 .8c.5 4.3 2.9 6.7 7.2 7.2-4.3.5-6.7 2.9-7.2 7.2C7.5 10.9 5.1 8.5.8 8 5.1 7.5 7.5 5.1 8 .8z'/%3E%3C/svg%3E")
        center / contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 .8c.5 4.3 2.9 6.7 7.2 7.2-4.3.5-6.7 2.9-7.2 7.2C7.5 10.9 5.1 8.5.8 8 5.1 7.5 7.5 5.1 8 .8z'/%3E%3C/svg%3E")
        center / contain no-repeat;
}

/* skeleton lines for the parts of a window that are only context */
.ui-skel {
    display: block;
    height: 6px;
    border-radius: 3px;
    background: var(--u-skel);
}

/* ---------------------------------------------------------------- brand marks */
/* Real brand icons are local files (icons/, written by scripts/icons.mjs fetch; icons-credits.json lists them): no page calls
   a CDN for an icon. A mark on a tile (.ui-logo, .ui-file__icon, .ui-field__tile, .ui-diff__tool, .ui-pipe__tool) is a colour
   file as <img src="icons/notion.svg" alt="">, the path as printed by fetch for the page that holds it. A small mark inline beside
   text stays in the ink: the one-colour inline <svg class="ui-brand" aria-hidden="true"> that fetch --mono prints. */
.ui-brand {
    display: block;
    flex: none;
    width: 18px;
    height: 18px;
}
svg.ui-brand {
    fill: currentColor;
    color: var(--u-ink);
}
.ui-brand--ink {
    color: var(--u-ink);
}
/* a brand logo on a small tile: the tile is light on every surface and the logo in its own colours */
.ui-logo {
    display: grid;
    place-items: center;
    flex: none;
    width: 40px;
    height: 40px;
    border-radius: var(--u-r2);
    background: var(--u-tile);
    box-shadow: var(--u-tile-edge);
}
.ui-logo img,
.ui-file__icon img,
.ui-field__tile img,
.ui-diff__tool img,
.ui-pipe__tool img {
    display: block;
    flex: none;
    object-fit: contain;
}
.ui-logo :is(svg, img, .ui-brand) {
    width: 20px;
    height: 20px;
}
.ui-logo--sm {
    width: 32px;
    height: 32px;
    border-radius: max(6px, var(--u-r3));
}
.ui-logo--sm :is(svg, img, .ui-brand) {
    width: 16px;
    height: 16px;
}
.ui-logo--lg {
    width: 56px;
    height: 56px;
    border-radius: var(--u-r);
}
.ui-logo--lg :is(svg, img, .ui-brand) {
    width: 28px;
    height: 28px;
}

/* ---------------------------------------------------------------- the pointer */
.ui-pointer {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 5;
    width: 20px;
    height: 20px;
    pointer-events: none;
    filter: drop-shadow(0 1px 1px rgb(0 0 0 / 0.25))
        drop-shadow(0 3px 6px rgb(0 0 0 / 0.2));
    will-change: transform;
}
.ui-pointer svg {
    width: 20px;
    height: 20px;
}
/* a named pointer (a person or the agent working in the product) */
.ui-pointer__name {
    position: absolute;
    left: 14px;
    top: 18px;
    height: 20px;
    padding: 0 7px;
    border-radius: 6px 10px 10px 10px;
    font: 500 13px/20px var(--ui-font, inherit);
    white-space: nowrap;
    background: var(--u-accent);
    color: var(--u-accent-ink);
}
.ui-ring {
    position: absolute;
    left: 0;
    top: 0;
    width: 28px;
    height: 28px;
    margin: -14px 0 0 -14px;
    border-radius: 50%;
    border: 1.5px solid var(--u-accent);
    opacity: 0;
    pointer-events: none;
    z-index: 4;
}
.ui-ring.is-on {
    animation: ui-ring 520ms var(--u-ease) forwards;
}
@keyframes ui-ring {
    from {
        opacity: 0.8;
        transform: var(--at) scale(0.4);
    }
    to {
        opacity: 0;
        transform: var(--at) scale(1.5);
    }
}

@keyframes ui-spin {
    to {
        transform: rotate(360deg);
    }
}
.ui-spin {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex: none;
    border: 1.5px solid color-mix(in oklab, currentColor 30%, transparent);
    border-top-color: currentColor;
    animation: ui-spin 700ms linear infinite;
}

/* ---------------------------------------------------------------- held, paused */
/* a fragment held on its finished picture (data-ui-still, its cycles done) shows nothing that moves:
   no caret, spinner or pulse runs on in a still picture */
.is-ui-held,
.is-ui-held *,
.is-ui-held *::before,
.is-ui-held *::after {
    animation: none !important;
}
.is-ui-paused,
.is-ui-paused *,
.is-ui-paused *::before,
.is-ui-paused *::after {
    animation-play-state: paused !important;
}

/* the pause button ui.loop puts by a looping fragment (and an object from assets/objects, as
   .loop-pause): a solid disc in the page colours (never a see-through blur), 32px in a 44px hit area,
   the same as components' .cx-pause and system.css. In a card it sits beside the title (ui.js sets its
   top and right; the title keeps 44px clear), in a panel outside a card 12px in from the bottom-right
   corner, and with no panel under the fragment, in 44px kept free below it. */
button.ui-pause.ui-pause,
button.loop-pause {
    position: absolute;
    right: 12px;
    bottom: 12px;
    z-index: 6;
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    margin: 0;
    padding: 0;
    border-radius: 50%;
    cursor: pointer;
    border: 1px solid color-mix(in oklab, var(--ink, #111) 16%, transparent);
    background: var(--bg, #fff);
    color: var(--ink, #111);
    box-shadow:
        0 1px 2px rgb(0 0 0 / 0.12),
        0 4px 12px -4px rgb(0 0 0 / 0.28);
    opacity: 0.88;
    transition:
        opacity 200ms ease,
        border-color 200ms ease;
    -webkit-tap-highlight-color: transparent;
}
button.ui-pause.ui-pause--title {
    bottom: auto;
    box-shadow: none;
    opacity: 1;
}
button.ui-pause.ui-pause--below {
    right: 0;
    bottom: 6px;
    box-shadow: none;
}
.ui-pause-beside {
    padding-right: 44px;
}
button:is(.ui-pause, .loop-pause)::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
}
button:is(.ui-pause, .loop-pause):is(:hover, :focus-visible) {
    opacity: 1;
    border-color: color-mix(in oklab, var(--ink, #111) 32%, transparent);
}
button:is(.ui-pause, .loop-pause):focus-visible {
    outline: 2px solid var(--ink, #111);
    outline-offset: 2px;
}
button:is(.ui-pause, .loop-pause) svg {
    display: block;
    width: 14px;
    height: 14px;
    fill: currentColor;
}
button:is(.ui-pause, .loop-pause).is-paused svg,
button.loop-pause[aria-pressed='true'] svg {
    margin-left: 1px;
}
@media (forced-colors: active) {
    button.ui-pause.ui-pause,
    button.loop-pause {
        border-color: ButtonText;
    }
}

@media (prefers-reduced-motion: reduce) {
    :where(.ui) *,
    :where(.ui) *::before,
    :where(.ui) *::after {
        transition-duration: 0ms !important;
        animation: none !important;
    }
    button.ui-pause.ui-pause,
    button.loop-pause {
        display: none;
    }
}