/* =============================================================================
   MacroInsight — AI interface primitives
   -----------------------------------------------------------------------------
   The AI-native half of Beautiful UI, reimplemented as plain CSS against our
   own tokens. The original is a React showcase with no distributed package, so
   these are rebuilt rather than installed — same visual language, no build step,
   drop-in for a Flask app that ships classic <script> tags.

   Nothing here is wired to a model yet. They are presentational primitives for
   when the assistant/streaming-explanation work lands.

   Specimen page: /styleguide#ai
   ========================================================================== */

/* --------------------------------------------------------------- loading --
   Pixel-grid loader: nine cells shimmering out of phase, plus elapsed time.
   Communicates "working" without implying a percentage we cannot know. */

.mi-ai-loading {
  display: flex;
  align-items: center;
  gap: var(--v2-s3);
  color: var(--v2-ink-3);
  font-size: var(--v2-t-sm);
}
.mi-ai-pixels {
  display: grid;
  grid-template-columns: repeat(3, 4px);
  grid-auto-rows: 4px;
  gap: 2px;
  flex: none;
}
.mi-ai-pixels i {
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 1px;
  background: var(--v2-ink-3);
  animation: mi-ai-pixel 1.2s var(--v2-ease) infinite;
}
.mi-ai-pixels i:nth-child(1) { animation-delay: 0ms; }
.mi-ai-pixels i:nth-child(2) { animation-delay: 90ms; }
.mi-ai-pixels i:nth-child(3) { animation-delay: 180ms; }
.mi-ai-pixels i:nth-child(4) { animation-delay: 270ms; }
.mi-ai-pixels i:nth-child(5) { animation-delay: 360ms; }
.mi-ai-pixels i:nth-child(6) { animation-delay: 450ms; }
.mi-ai-pixels i:nth-child(7) { animation-delay: 540ms; }
.mi-ai-pixels i:nth-child(8) { animation-delay: 630ms; }
.mi-ai-pixels i:nth-child(9) { animation-delay: 720ms; }
@keyframes mi-ai-pixel { 0%, 100% { opacity: 0.22; } 50% { opacity: 1; } }
.mi-ai-elapsed { font-family: var(--v2-mono); font-size: var(--v2-t-xs); font-variant-numeric: tabular-nums; color: var(--v2-ink-3); }
@media (prefers-reduced-motion: reduce) {
  .mi-ai-pixels i { animation: none; opacity: 0.6; }
}

/* -------------------------------------------------------------- thinking --
   A collapsed reasoning trace. Uses <details>/<summary> so it is keyboard
   operable and expandable with no JavaScript at all. */

.mi-ai-thinking {
  background: var(--v2-surface);
  border-radius: var(--v2-r-lg);
  box-shadow: var(--v2-hairline);
  overflow: hidden;
}
.mi-ai-thinking > summary {
  display: flex;
  align-items: center;
  gap: var(--v2-s2);
  padding: var(--v2-s3) var(--v2-s4);
  cursor: pointer;
  list-style: none;
  font-size: var(--v2-t-sm);
  color: var(--v2-ink-2);
  user-select: none;
}
.mi-ai-thinking > summary::-webkit-details-marker { display: none; }
.mi-ai-thinking > summary:hover { background: var(--v2-hover); }
.mi-ai-thinking > summary:focus-visible { outline: none; box-shadow: var(--v2-ring); }
.mi-ai-thinking-spark { color: var(--v2-accent-text); flex: none; }
.mi-ai-thinking-chevron { margin-left: auto; color: var(--v2-ink-3); transition: transform var(--v2-fast) var(--v2-ease); }
.mi-ai-thinking[open] .mi-ai-thinking-chevron { transform: rotate(180deg); }
.mi-ai-thinking-body {
  padding: 0 var(--v2-s4) var(--v2-s4);
  border-top: 1px solid var(--v2-line);
  padding-top: var(--v2-s3);
}

/* Trace steps: a rail with a node per step. */
.mi-ai-trace { list-style: none; margin: 0; padding: 0; }
.mi-ai-trace li {
  position: relative;
  padding: 0 0 var(--v2-s3) var(--v2-s5);
  font-size: var(--v2-t-sm);
  line-height: 1.5;
  color: var(--v2-ink-2);
}
.mi-ai-trace li::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 6px;
  width: 6px;
  height: 6px;
  border-radius: var(--v2-r-pill);
  background: var(--v2-ink-3);
}
.mi-ai-trace li::after {
  content: '';
  position: absolute;
  left: 5.5px;
  top: 14px;
  bottom: 0;
  width: 1px;
  background: var(--v2-line);
}
.mi-ai-trace li:last-child { padding-bottom: 0; }
.mi-ai-trace li:last-child::after { display: none; }
.mi-ai-trace li.is-done::before { background: var(--v2-bull); }
.mi-ai-trace li.is-active::before { background: var(--v2-accent); box-shadow: 0 0 0 3px var(--v2-accent-soft); }
.mi-ai-trace-kind {
  font-family: var(--v2-mono);
  font-size: var(--v2-t-xs);
  color: var(--v2-ink-3);
  margin-right: var(--v2-s2);
}

/* ------------------------------------------------------------- streaming --
   Streamed prose with inline source citations and a caret while in flight. */

.mi-ai-stream { font-size: var(--v2-t-md); line-height: 1.6; color: var(--v2-ink-2); }
.mi-ai-stream strong { color: var(--v2-ink); font-weight: 600; }
.mi-ai-stream[data-streaming='true']::after {
  content: '';
  display: inline-block;
  width: 2px;
  height: 1.05em;
  margin-left: 2px;
  vertical-align: text-bottom;
  background: var(--v2-accent);
  animation: mi-ai-caret 1s steps(2, start) infinite;
}
@keyframes mi-ai-caret { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .mi-ai-stream[data-streaming='true']::after { animation: none; }
}

/* Inline source chip — superscript-ish, clickable, never breaks the line box. */
.mi-ai-source {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  margin: 0 2px;
  border-radius: var(--v2-r-xs);
  background: var(--v2-accent-soft);
  color: var(--v2-accent-text);
  font-family: var(--v2-mono);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  text-decoration: none;
  vertical-align: 1px;
}
.mi-ai-source:hover { background: var(--v2-accent); color: var(--v2-accent-ink); text-decoration: none; }

/* -------------------------------------------------------------- approval --
   Human-in-the-loop gate. Deliberately high-contrast: it is asking for consent,
   so it must not read like a passive notification. */

.mi-ai-approval {
  background: var(--v2-surface);
  border-radius: var(--v2-r-lg);
  box-shadow: var(--v2-e1);
  padding: var(--v2-s4);
  border-left: 2px solid var(--v2-warn);
}
.mi-ai-approval-head {
  display: flex;
  align-items: baseline;
  gap: var(--v2-s2);
  margin-bottom: var(--v2-s2);
}
.mi-ai-approval-title { margin: 0; font-size: var(--v2-t-sm); font-weight: 600; color: var(--v2-ink); }
.mi-ai-approval-body { margin: 0 0 var(--v2-s3); font-size: var(--v2-t-sm); line-height: 1.55; color: var(--v2-ink-2); }
.mi-ai-approval-actions { display: flex; align-items: center; gap: var(--v2-s2); }

/* ------------------------------------------------------------ tool chips --
   One tool call, compact. Status is a dot so the row scans vertically. */

.mi-ai-tool {
  display: inline-flex;
  align-items: center;
  gap: var(--v2-s2);
  max-width: 100%;
  padding: 3px var(--v2-s2) 3px var(--v2-s1);
  border-radius: var(--v2-r-sm);
  background: var(--v2-sunk-2);
  box-shadow: var(--v2-hairline);
  font-size: var(--v2-t-xs);
  color: var(--v2-ink-2);
}
.mi-ai-tool-dot { width: 6px; height: 6px; border-radius: var(--v2-r-pill); background: var(--v2-ink-3); flex: none; margin-left: var(--v2-s1); }
.mi-ai-tool.is-running .mi-ai-tool-dot { background: var(--v2-accent); animation: mi-ai-pulse 1.2s var(--v2-ease) infinite; }
.mi-ai-tool.is-ok .mi-ai-tool-dot   { background: var(--v2-bull); }
.mi-ai-tool.is-fail .mi-ai-tool-dot { background: var(--v2-bear); }
.mi-ai-tool-name { font-family: var(--v2-mono); color: var(--v2-ink); }
.mi-ai-tool-arg {
  font-family: var(--v2-mono);
  color: var(--v2-ink-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
@keyframes mi-ai-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
@media (prefers-reduced-motion: reduce) {
  .mi-ai-tool.is-running .mi-ai-tool-dot { animation: none; }
}

/* ------------------------------------------------------------- task rows --
   A queue of work with per-row status. Rows are separated by hairlines, not
   boxes, so a long list stays quiet. */

.mi-ai-tasks { display: flex; flex-direction: column; }
.mi-ai-task {
  display: flex;
  align-items: center;
  gap: var(--v2-s3);
  padding: var(--v2-s3) 0;
  font-size: var(--v2-t-sm);
  color: var(--v2-ink-2);
}
.mi-ai-task + .mi-ai-task { border-top: 1px solid var(--v2-line); }
.mi-ai-task-status {
  flex: none;
  width: 18px;
  height: 18px;
  border-radius: var(--v2-r-pill);
  display: grid;
  place-items: center;
  font-size: 10px;
  box-shadow: inset 0 0 0 1px var(--v2-line-2);
  color: var(--v2-ink-3);
}
.mi-ai-task.is-done .mi-ai-task-status { background: var(--v2-bull-soft); color: var(--v2-bull); box-shadow: inset 0 0 0 1px var(--v2-bull); }
.mi-ai-task.is-active .mi-ai-task-status { background: var(--v2-accent-soft); color: var(--v2-accent-text); box-shadow: inset 0 0 0 1px var(--v2-accent); }
.mi-ai-task.is-fail .mi-ai-task-status { background: var(--v2-bear-soft); color: var(--v2-bear); box-shadow: inset 0 0 0 1px var(--v2-bear); }
.mi-ai-task-label { flex: 1 1 auto; min-width: 0; color: var(--v2-ink); }
.mi-ai-task.is-done .mi-ai-task-label { color: var(--v2-ink-3); }
.mi-ai-task-meta { flex: none; font-family: var(--v2-mono); font-size: var(--v2-t-xs); color: var(--v2-ink-3); font-variant-numeric: tabular-nums; }

/* -------------------------------------------------------------- composer --
   Chat composer / prompt bar. The field is an inset well so it reads as
   somewhere to type rather than another card. */

.mi-ai-composer {
  display: flex;
  flex-direction: column;
  gap: var(--v2-s2);
  padding: var(--v2-s2);
  border-radius: var(--v2-r-lg);
  background: var(--v2-sunk-2);
  box-shadow: var(--v2-hairline), var(--v2-e-field);
}
.mi-ai-composer:focus-within { box-shadow: var(--v2-hairline), var(--v2-e-field), var(--v2-ring); }
.mi-ai-composer-input {
  width: 100%;
  min-height: 44px;
  resize: vertical;
  border: 0;
  background: transparent;
  color: var(--v2-ink);
  font-family: var(--v2-sans);
  font-size: var(--v2-t-md);
  line-height: 1.5;
  padding: var(--v2-s2);
}
.mi-ai-composer-input::placeholder { color: var(--v2-ink-3); }
.mi-ai-composer-input:focus { outline: none; }
.mi-ai-composer-bar { display: flex; align-items: center; gap: var(--v2-s2); }
.mi-ai-composer-bar .mi-spacer { margin-left: auto; }

/* Source pill used in the prompt bar — "@BTC", "#4h", attached context. */
.mi-ai-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--v2-s1);
  padding: 2px var(--v2-s2);
  border-radius: var(--v2-r-pill);
  background: var(--v2-surface);
  box-shadow: var(--v2-hairline);
  font-size: var(--v2-t-xs);
  color: var(--v2-ink-2);
}
.mi-ai-pill-x { color: var(--v2-ink-3); cursor: pointer; }
.mi-ai-pill-x:hover { color: var(--v2-ink); }

/* ------------------------------------------------------------ diff table --
   Proposed change, before/after. Tinted rows, never red/green text alone —
   colour is reinforced by the +/- gutter for anyone who cannot separate them. */

.mi-ai-diff {
  border-radius: var(--v2-r-md);
  overflow: hidden;
  box-shadow: var(--v2-hairline);
  font-family: var(--v2-mono);
  font-size: var(--v2-t-xs);
  line-height: 1.7;
}
.mi-ai-diff-row { display: flex; gap: var(--v2-s2); padding: 0 var(--v2-s3); }
.mi-ai-diff-row.is-add { background: var(--v2-bull-soft); color: var(--v2-bull); }
.mi-ai-diff-row.is-del { background: var(--v2-bear-soft); color: var(--v2-bear); }
.mi-ai-diff-row.is-ctx { color: var(--v2-ink-3); }
.mi-ai-diff-gutter { flex: none; width: 1ch; opacity: 0.8; user-select: none; }

/* ------------------------------------------------------------ code block -- */

.mi-ai-code {
  position: relative;
  border-radius: var(--v2-r-md);
  background: var(--v2-page);
  box-shadow: var(--v2-hairline);
  overflow: hidden;
}
.mi-ai-code-head {
  display: flex;
  align-items: center;
  gap: var(--v2-s2);
  padding: var(--v2-s2) var(--v2-s3);
  border-bottom: 1px solid var(--v2-line);
  font-family: var(--v2-mono);
  font-size: var(--v2-t-xs);
  color: var(--v2-ink-3);
}
.mi-ai-code pre {
  margin: 0;
  padding: var(--v2-s3);
  overflow-x: auto;
  font-family: var(--v2-mono);
  font-size: var(--v2-t-xs);
  line-height: 1.65;
  color: var(--v2-ink-2);
}

/* ------------------------------------------------------ context / insight --
   A retrieved source or a computed insight, as a compact card. */

.mi-ai-context {
  display: flex;
  gap: var(--v2-s3);
  padding: var(--v2-s3);
  border-radius: var(--v2-r-md);
  background: var(--v2-surface);
  box-shadow: var(--v2-hairline);
  text-decoration: none;
  color: inherit;
  transition: background var(--v2-fast) var(--v2-ease);
}
.mi-ai-context:hover { background: var(--v2-hover); text-decoration: none; }
.mi-ai-context-idx {
  flex: none;
  font-family: var(--v2-mono);
  font-size: var(--v2-t-xs);
  color: var(--v2-ink-3);
  font-variant-numeric: tabular-nums;
}
.mi-ai-context-title { margin: 0 0 2px; font-size: var(--v2-t-sm); font-weight: 550; color: var(--v2-ink); }
.mi-ai-context-sub { margin: 0; font-size: var(--v2-t-xs); color: var(--v2-ink-3); }

/* --------------------------------------------------- selection actions --
   Floating toolbar for a text selection. Hidden until [data-open]. */

.mi-ai-selection {
  display: none;
  align-items: center;
  gap: var(--v2-s1);
  padding: var(--v2-s1);
  border-radius: var(--v2-r-md);
  background: var(--v2-surface);
  box-shadow: var(--v2-e3);
}
.mi-ai-selection[data-open='true'] { display: inline-flex; }