/* ============================================================
   Graft — conversation curation prototype
   Loaded only on /graft/. Scoped under .graft_page.
   Tokens mirror styles.scss values; themed via html.theme-*.
   ============================================================ */

.graft_page {
  --g-bg:        #171814;
  --g-ink:       #EDEEE8;
  --g-ink-2:     #D4D5D0;
  --g-muted:     rgba(237, 238, 232, 0.55);
  --g-rule:      rgba(237, 238, 232, 0.14);
  --g-panel:     rgba(237, 238, 232, 0.04);
  --g-panel-2:   rgba(237, 238, 232, 0.07);
  --g-accent:    #EDEEE8;
  --g-accent-2:  rgba(237, 238, 232, 0.8);
  --g-user:      rgba(237, 238, 232, 0.09);
  --g-keep:      #EDEEE8;
  --g-ghost:     rgba(237, 238, 232, 0.35);
  --g-flash:     rgba(237, 238, 232, 0.18);
}

html.theme-light .graft_page {
  --g-bg:        #F2F2ED;
  --g-ink:       #2A2B26;
  --g-ink-2:     #33352E;
  --g-muted:     rgba(42, 43, 38, 0.55);
  --g-rule:      rgba(42, 43, 38, 0.16);
  --g-panel:     rgba(42, 43, 38, 0.04);
  --g-panel-2:   rgba(42, 43, 38, 0.07);
  --g-accent:    #2A2B26;
  --g-accent-2:  rgba(42, 43, 38, 0.8);
  --g-user:      rgba(42, 43, 38, 0.08);
  --g-keep:      #2A2B26;
  --g-flash:     rgba(42, 43, 38, 0.12);
  --g-ghost:     rgba(42, 43, 38, 0.35);
}

.graft_page { color: var(--g-ink); }

/* One visible focus ring, checked against panels and the tree alike */
.graft_page :focus-visible { outline: 2px solid var(--g-ink); outline-offset: 2px; border-radius: 4px; }
.graft_page svg :focus-visible { outline: none; } /* ring drawn on the circle instead */

.graft_announce {
  clip: rect(0 0 0 0); clip-path: inset(50%); height: 1px; width: 1px;
  margin: 0; overflow: hidden; position: absolute; white-space: nowrap;
}

.graft_count {
  color: var(--g-muted);
  font-variant-numeric: tabular-nums;
  text-transform: none;
  letter-spacing: 0;
}

/* ---------- header ---------- */

.graft_head { padding-top: 7rem; padding-bottom: 1.5rem; }

.graft_eyebrow {
  color: var(--g-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}

.graft_title {
  font-size: clamp(2.5rem, 4vw + 1rem, 4.5rem);
  line-height: 1.02;
  margin: 0 0 0.75rem;
}

.graft_lead {
  color: var(--g-ink-2);
  font-size: 1.25rem;
  line-height: 1.45;
  margin: 0 0 1rem;
  max-width: 34em;
}

.graft_honesty {
  align-items: baseline;
  color: var(--g-muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.875rem;
  gap: 0.75rem;
  margin: 0;
}

.graft_reset {
  background: none;
  border: 1px solid var(--g-rule);
  border-radius: 99em;
  color: var(--g-muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  padding: 0.2em 0.9em;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.graft_reset:hover, .graft_reset:focus-visible { border-color: var(--g-accent); color: var(--g-ink); }

/* ---------- app frame ---------- */

.graft_app { padding-bottom: 3rem; }
.graft_app .grid_12 { display: block; }

.graft_panel_label {
  color: var(--g-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

/* ---------- tree band ---------- */

.graft_tree_band {
  /* Sticky within the app section; opaque so content scrolls under,
     not through. color-mix collapses the translucent panel tint. */
  background: color-mix(in srgb, var(--g-ink) 5%, var(--g-bg));
  border: 1px solid var(--g-rule);
  border-radius: 1rem;
  margin-bottom: 1rem;
  padding: 0.9rem 1.1rem 0.4rem;
  position: sticky;
  top: 0.75rem;
  z-index: 5;
}

.graft_tree_head {
  align-items: baseline;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
}

.graft_tree_hint { color: var(--g-muted); font-size: 0.8125rem; }

.graft_tree_scroll { overflow-x: auto; }

.graft_tree { display: block; height: 150px; min-width: 640px; width: 100%; }

.graft_tree .g_edge        { fill: none; stroke: var(--g-rule); stroke-width: 2; }
.graft_tree .g_edge.active { stroke: var(--g-accent); stroke-width: 2.5; }
.graft_tree .g_edge.ghost  { stroke: var(--g-ghost); stroke-dasharray: 3 5; stroke-width: 1.5; }

.graft_tree .g_node { cursor: pointer; }
.graft_tree .g_node .g_dot {
  fill: var(--g-bg);
  stroke: var(--g-muted);
  stroke-width: 2;
  transition: stroke 0.18s ease, stroke-width 0.18s ease;
}
.graft_tree .g_node.active .g_dot { stroke: var(--g-accent); }
.graft_tree .g_node.current .g_dot { fill: var(--g-accent); stroke: var(--g-accent); }
.graft_tree .g_node:hover .g_dot, .graft_tree .g_node:focus-visible .g_dot { stroke: var(--g-accent); stroke-width: 3; }
.graft_tree .g_hit { fill: transparent; stroke: none; }
.graft_tree .g_term { fill: none; stroke: var(--g-ghost); stroke-width: 1.5; }
.graft_tree .g_ghost_hit:hover .g_term, .graft_tree .g_ghost_hit:focus-visible .g_term { stroke: var(--g-accent); }
.graft_tree .g_node.flash .g_dot { fill: var(--g-accent); stroke: var(--g-accent); }

.graft_tree .g_label {
  fill: var(--g-ink-2);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
}
.graft_tree .g_label.ghostlabel { fill: var(--g-ghost); }
.graft_tree .g_ghost_hit { cursor: pointer; }
.graft_tree .g_ghost_hit:hover .g_label.ghostlabel,
.graft_tree .g_ghost_hit:focus-visible .g_label.ghostlabel { fill: var(--g-accent-2); }

/* ---------- columns ---------- */

.graft_columns {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) 340px;
}

/* ---------- thread ---------- */

.graft_thread_col {
  background: var(--g-panel);
  border: 1px solid var(--g-rule);
  border-radius: 1rem;
  min-width: 0;
  padding: 1rem 1.1rem;
}

/* The thread scrolls inside its panel: jumping to a turn moves this
   scroller, never the page, so the map stays exactly where you are. */
.graft_thread, .graft_compare {
  max-height: 58vh;
  overflow-y: auto;
  position: relative;
  scrollbar-width: thin;
}

.graft_thread_toolbar {
  align-items: center;
  border-bottom: 1px solid var(--g-rule);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
}

.graft_branch_pills { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.graft_pill {
  background: none;
  border: 1px solid var(--g-rule);
  border-radius: 99em;
  color: var(--g-ink-2);
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  padding: 0.25em 0.9em;
  transition: border-color 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}
.graft_pill[aria-selected="true"] {
  background: var(--g-accent);
  border-color: var(--g-accent);
  color: var(--g-bg);
}
.graft_pill:hover:not([aria-selected="true"]), .graft_pill:focus-visible { border-color: var(--g-accent); }

.graft_compare_toggle {
  background: none;
  border: 1px solid var(--g-rule);
  border-radius: 99em;
  color: var(--g-ink-2);
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.25em 1em;
}
.graft_compare_toggle[aria-pressed="true"] {
  background: var(--g-ink);
  border-color: var(--g-ink);
  color: var(--g-bg);
}

.graft_turn { margin-bottom: 1rem; }

.graft_turn_role {
  color: var(--g-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  margin: 0 0 0.35rem;
  text-transform: uppercase;
}

.graft_turn_body {
  border-radius: 10px;
  font-size: 1rem;
  line-height: 1.55;
  padding: 0.85rem 1rem;
}
.graft_turn.user .graft_turn_body { background: var(--g-user); }
.graft_turn.assistant .graft_turn_body { background: var(--g-panel-2); }

.graft_turn.inherited { opacity: 0.62; }
.graft_turn.flashsrc .graft_turn_body { animation: graftFlash 1.2s ease; }
@keyframes graftFlash { 0% { background-color: var(--g-flash); } 100% {} }

.graft_turn p { margin: 0 0 0.6rem; }
.graft_turn p:last-child { margin-bottom: 0; }

/* keepable blocks inside assistant turns */
.graft_block {
  align-items: baseline;
  border: 1px solid var(--g-rule);
  border-radius: 6px;
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  margin: 0.5rem 0;
  padding: 0.6rem 0.75rem;
  transition: border-color 0.18s ease;
}
.graft_block:hover { border-color: var(--g-accent); }
.graft_block_text { font-size: 1rem; }
.graft_block.kept { border-color: var(--g-keep); }

.graft_keep {
  background: none;
  border: 1px solid var(--g-rule);
  border-radius: 99em;
  color: var(--g-ink-2);
  cursor: pointer;
  flex: none;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.2em 0.8em;
  text-transform: uppercase;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.graft_keep:hover, .graft_keep:focus-visible { border-color: var(--g-keep); color: var(--g-ink); }
.graft_block.kept .graft_keep { background: var(--g-keep); border-color: var(--g-keep); color: var(--g-bg); }

/* fork affordance */
.graft_forkrow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.6rem 0 0;
}

.graft_forkrow_label {
  color: var(--g-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding-top: 0.35em;
  text-transform: uppercase;
}

.graft_fork {
  background: none;
  border: 1px dashed var(--g-ghost);
  border-radius: 99em;
  color: var(--g-ink-2);
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  padding: 0.22em 0.9em;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}
.graft_fork:hover, .graft_fork:focus-visible { border-color: var(--g-accent-2); border-style: solid; color: var(--g-ink); }
.graft_fork.taken { border-style: solid; border-color: var(--g-rule); color: var(--g-muted); }

/* ---------- compare ---------- */

.graft_compare_pickers {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.85rem;
}
.graft_compare_pickers label {
  align-items: center;
  color: var(--g-muted);
  display: flex;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8125rem;
  gap: 0.4rem;
}
.graft_compare_pickers select {
  background: var(--g-panel-2);
  border: 1px solid var(--g-rule);
  border-radius: 6px;
  color: var(--g-ink);
  font: inherit;
  font-size: 0.875rem;
  padding: 0.3em 0.5em;
}

.graft_compare_cols {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr 1fr;
}
.graft_compare_col { border-left: 2px solid var(--g-rule); min-width: 0; padding-left: 0.9rem; }
.graft_compare_col .graft_col_name {
  color: var(--g-ink-2);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}

/* ---------- master ---------- */

.graft_master_col {
  align-self: start;
  background: var(--g-panel);
  border: 1px solid var(--g-rule);
  border-radius: 1rem;
  padding: 1rem 1.1rem;
}

.graft_master {
  max-height: 58vh;
  overflow-y: auto;
  scrollbar-width: thin;
}

.graft_master_head {
  align-items: center;
  border-bottom: 1px solid var(--g-rule);
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.9rem;
  padding-bottom: 0.7rem;
}

.graft_copy {
  background: none;
  border: 1px solid var(--g-rule);
  border-radius: 99em;
  color: var(--g-ink-2);
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  padding: 0.22em 0.9em;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.graft_copy:not(:disabled):hover, .graft_copy:focus-visible { border-color: var(--g-accent); color: var(--g-ink); }
.graft_copy:disabled { cursor: default; opacity: 0.45; }

.graft_master_empty { color: var(--g-muted); font-size: 0.9375rem; line-height: 1.55; margin: 0; }

.graft_kept {
  border: 1px solid var(--g-rule);
  border-radius: 6px;
  margin-bottom: 0.6rem;
  padding: 0.7rem 0.8rem;
}
.graft_kept_text { font-size: 0.9375rem; line-height: 1.5; margin: 0 0 0.55rem; }

.graft_kept_meta {
  align-items: center;
  display: flex;
  gap: 0.5rem;
  justify-content: space-between;
}

.graft_prov {
  background: none;
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--g-rule);
  border-radius: 99em;
  color: var(--g-muted);
  cursor: pointer;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  padding: 0.18em 0.75em;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.graft_prov:hover, .graft_prov:focus-visible { border-color: var(--g-accent-2); color: var(--g-ink); }

.graft_kept_actions { display: flex; flex: none; gap: 0.25rem; }
.graft_kept_actions button {
  background: none;
  border: none;
  border-radius: 0.35rem;
  color: var(--g-muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  line-height: 1;
  padding: 0.3em 0.4em;
}
.graft_kept_actions button:hover, .graft_kept_actions button:focus-visible { background: var(--g-panel-2); color: var(--g-ink); }

/* ---------- writeup ---------- */

.graft_writeup { padding-bottom: 5rem; }
.graft_writeup h2 { font-size: 1.5rem; margin: 2.5rem 0 0.75rem; }
.graft_writeup p { color: var(--g-ink-2); font-size: 1.125rem; line-height: 1.6; margin: 0 0 1rem; max-width: 44em; }
.graft_decisions { margin: 0 0 1rem; max-width: 44em; padding-left: 1.2rem; }
.graft_decisions li { color: var(--g-ink-2); font-size: 1.125rem; line-height: 1.6; margin-bottom: 0.75rem; }
.graft_colophon_note { color: var(--g-muted); font-size: 0.9375rem; }

.graft_install {
  background: var(--g-panel-2);
  border: 1px solid var(--g-rule);
  border-radius: 10px;
  margin: 0 0 1rem;
  max-width: 44em;
  overflow-x: auto;
  padding: 0.85rem 1rem;
}
.graft_install code { font-family: "IBM Plex Mono", monospace; font-size: 0.8125rem; }
.graft_writeup code { font-family: "IBM Plex Mono", monospace; font-size: 0.9em; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .graft_columns { grid-template-columns: 1fr; }
  .graft_compare_cols { grid-template-columns: 1fr; }
  .graft_head { padding-top: 5.5rem; }
  /* Natural page flow on phones: no sticky band, no nested scrollers */
  .graft_tree_band { position: static; }
  .graft_thread, .graft_compare, .graft_master { max-height: none; overflow: visible; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .graft_page * { animation: none !important; transition: none !important; }
}