/* Mattermost — bespoke visuals for the single-page surface doc.
   Mattermost is an INCOMING surface: an employee asks the bot in a DM, Query Engine
   answers under their ACL — Slack's twin on a self-hosted server. The conversation
   boundary is the thread (Slack's rule), and the transport is a dial-out WebSocket
   instead of a webhook: a singleton listener dials the server, nothing dials in.
   The page opens with that flow (DM → door → engine, the answer returning into the
   thread), states the concept in one thesis, then unfolds the four edges (connect ·
   identity · conversation · delivery) as numbered cards, a literal DM mockup, and
   the data it touches.
   Loaded by modules/mattermost/index.html on top of module.css.
   Placement convention: a module's bespoke visuals live beside its index. §Styling */

/* ══════════════════════════════════════════
   HERO — display headline · lede
   ══════════════════════════════════════════ */
.mm-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.55rem;
  padding: 1.6rem 0 2rem;
  background:
    radial-gradient(58% 70% at 50% 0%, var(--tint-15), transparent 68%),
    radial-gradient(36% 50% at 84% 14%, var(--tint-8), transparent 70%);
}
.mm-title {
  font-family: "Fraunces", Georgia, "Times New Roman", serif;
  font-optical-sizing: auto;
  font-weight: 600;
  font-size: clamp(1.9rem, 4.6vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--text);
  max-width: 19ch;
  margin: 0.1rem 0 0;
  text-wrap: balance;
}
.mm-lede {
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--text-dim);
  max-width: 52ch;
  margin: 0;
}

/* ══════════════════════════════════════════
   FLOW — three stations joined by labelled rails
   DM (dashed origin) → Achilles door (accent heart) → engine (knowledge graph).
   First link carries a return rail (the answer posts back into the thread);
   second link is a single forward rail (search under ACL).
   ══════════════════════════════════════════ */
.mm-flow {
  display: flex;
  align-items: stretch;
  gap: 0.4rem;
  margin: 0.6rem 0 1.4rem;
}
.mm-station {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.35rem;
  padding: 1.1rem 0.9rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
}
.mm-station--user {
  border-style: dashed;
  border-color: var(--accent-muted);
}
.mm-station--door {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 8px 24px -10px var(--accent);
}
.mm-station--engine {
  background: var(--tint-6);
  border-color: var(--tint-25);
}

.mm-station__tag {
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--pill-radius);
  padding: 0.08rem 0.45rem;
}
.mm-station__tag--on {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.mm-station__glyph {
  font-size: 1.7rem;
  line-height: 1;
  margin-top: 0.1rem;
}
.mm-station__glyph--graph {
  width: 40px;
  height: 40px;
}
.mm-station__glyph--graph svg {
  width: 100%;
  height: 100%;
}
.mm-station__glyph--graph line {
  stroke: var(--accent);
  stroke-width: 1.4;
  opacity: 0.4;
}
.mm-station__glyph--graph circle {
  fill: var(--paper);
  stroke: var(--accent);
  stroke-width: 1.8;
}
.mm-graph__hub {
  fill: var(--accent) !important;
}

.mm-station__name {
  font-weight: 700;
  font-size: 0.96rem;
  color: var(--text);
}
.mm-station--door .mm-station__name {
  color: #fff;
}
.mm-station__desc {
  font-size: 0.76rem;
  line-height: 1.45;
  color: var(--text-muted);
}
.mm-station--door .mm-station__desc {
  color: rgba(255, 255, 255, 0.82);
}
.mm-station__desc code {
  font-size: 0.72rem;
}
.mm-station--door .mm-station__desc code {
  color: #fff;
}

/* ── Rail — forward + return wires between stations ── */
.mm-link {
  flex: 0 1 8.5rem;
  align-self: center;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0 0.1rem;
}
.mm-link__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}
.mm-link__lbl {
  font-size: 0.66rem;
  line-height: 1.25;
  text-align: center;
  color: var(--text-dim);
}
.mm-link__lbl code {
  font-size: 0.64rem;
  color: var(--accent);
}
.mm-link__wire {
  position: relative;
  width: 100%;
  height: 2px;
  background-image: linear-gradient(
    to right,
    var(--accent) 0 6px,
    transparent 6px 12px
  );
  background-size: 12px 2px;
  background-repeat: repeat-x;
  animation: mm-march 0.9s linear infinite;
}
.mm-link__wire::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -1px;
  width: 0;
  height: 0;
  transform: translateY(-50%);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 6px solid var(--accent);
}
.mm-link__rail--back .mm-link__wire {
  background-image: linear-gradient(
    to right,
    var(--accent-muted) 0 6px,
    transparent 6px 12px
  );
  animation-direction: reverse;
}
.mm-link__rail--back .mm-link__wire::after {
  right: auto;
  left: -1px;
  border-left: none;
  border-right: 6px solid var(--accent-muted);
}

/* ══════════════════════════════════════════
   THESIS — the concept's heart, one accented line
   ══════════════════════════════════════════ */
.mm-thesis {
  margin: 0 0 1.8rem;
  padding: 1rem 1.2rem;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-dim);
  background: var(--surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
}
.mm-thesis strong {
  color: var(--text);
}
.mm-thesis .xref-module {
  display: inline-block;
  margin-top: 0.2rem;
  font-size: 0.82rem;
}

/* ══════════════════════════════════════════
   CARDS — connect · identity · conversation · delivery (numbered)
   ══════════════════════════════════════════ */
.mm-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin-bottom: 2rem;
}
.mm-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.25rem 1.2rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.mm-card__num {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.mm-card__title {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 600;
  font-size: 1.16rem;
  line-height: 1.15;
  color: var(--text);
  margin: 0;
}
.mm-card__sub {
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-dim);
  margin: 0;
}
.mm-card__foot {
  margin: auto 0 0;
  padding-top: 0.35rem;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--text-muted);
}

/* ══════════════════════════════════════════
   CHAT — literal DM mockup (the payoff visual)
   A Mattermost-flavoured direct message: user question, bot answer with a source
   citation, the thread hint. Honest UI strings only.
   ══════════════════════════════════════════ */
.mm-chat {
  padding: 0.4rem 0 0.6rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}
.mm-chat__bar {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.6rem 1rem 0.7rem;
  border-bottom: 1px solid var(--border);
}
.mm-chat__dm {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text);
}
.mm-chat__hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}
.mm-msg {
  display: flex;
  gap: 0.6rem;
  padding: 0.7rem 1rem 0.2rem;
}
.mm-msg__av {
  flex: none;
  width: 2.1rem;
  height: 2.1rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: var(--s3);
}
.mm-msg__av--bot {
  background: var(--accent);
}
.mm-msg__body {
  min-width: 0;
}
.mm-msg__who {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text);
}
.mm-msg__app {
  font-family: var(--mono);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.02rem 0.22rem;
  vertical-align: 0.08rem;
}
.mm-msg__t {
  font-weight: 400;
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-left: 0.3rem;
}
.mm-msg__text {
  margin: 0.15rem 0 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-dim);
}
/* citation superscript chip — the [n] grounding marker */
.mm-cite {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1rem;
  height: 1rem;
  margin-left: 0.15rem;
  padding: 0 0.2rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 700;
  vertical-align: 0.32rem;
  color: var(--accent);
  background: var(--tint-15);
  border-radius: 4px;
}
.mm-src {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.5rem;
  padding: 0.3rem 0.55rem;
  font-size: 0.72rem;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 0 7px 7px 0;
}
.mm-src .mm-cite {
  margin: 0;
  vertical-align: 0;
}
/* thread hint — a reply continues the conversation, a new message starts a fresh one */
.mm-cmd {
  margin-top: 0.45rem;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent);
}
.mm-cmd code {
  font-size: 0.72rem;
}
.mm-chat__note {
  margin: 0.7rem 0 0;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--text-muted);
}
/* caption above a second chat sample — own top margin for vertical rhythm */
.mm-chat__lead {
  margin: 1.5rem 0 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dim);
}
/* inline monospace token inside a message — link or linking code */
.mm-code {
  padding: 0.05rem 0.3rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--tint-15);
  border-radius: 4px;
  word-break: break-all;
}

/* ══════════════════════════════════════════
   DATA — what the surface touches (table · home · role)
   ══════════════════════════════════════════ */
.mm-data {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.mm-data__row {
  display: grid;
  grid-template-columns: 11rem 8rem 1fr;
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.5rem 0.7rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.mm-data__tbl {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
}
.mm-data__home {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
}
.mm-data__home--new {
  color: var(--accent);
}
.mm-data__role {
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--text-dim);
}
.mm-data__role code {
  font-size: 0.7rem;
}

/* ── mattermost_settings — the one owned table, expanded (field · type · constraint · note) ── */
.mm-tbl {
  margin-top: 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  overflow: hidden;
}
.mm-tbl__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.7rem;
  background: var(--tint-4);
  border-bottom: 1px solid var(--border);
}
.mm-tbl__name {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
}
.mm-tbl__sub {
  font-size: 0.72rem;
  color: var(--text-dim);
}
.mm-tbl__badge {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--accent);
  background: var(--tint-15);
  border: 1px solid var(--tint-25);
  border-radius: var(--pill-radius);
  padding: 0.12rem 0.45rem;
}
.mm-fields {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}
.mm-fields td {
  padding: 0.32rem 0.7rem;
  border-top: 1px solid var(--border);
  vertical-align: baseline;
}
.mm-fields tr:first-child td {
  border-top: none;
}
.mm-f {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.mm-t {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  white-space: nowrap;
}
.mm-cons {
  white-space: nowrap;
}
.mm-n {
  width: 100%;
  color: var(--text-dim);
  line-height: 1.4;
}
.mm-n code {
  font-size: 0.7rem;
}
.mm-c {
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 0.1rem 0.38rem;
  margin-right: 0.2rem;
  border-radius: var(--pill-radius);
  line-height: 1.4;
}
.mm-c--pk {
  background: var(--s1);
  color: #fff;
}
.mm-c--nn {
  background: var(--s3);
  color: #fff;
}
.mm-c--null {
  background: var(--paper);
  color: var(--text-muted);
  border: 1px solid var(--accent-muted);
}
.mm-c--chk {
  background: var(--tint-15);
  color: var(--accent);
  border: 1px solid var(--tint-25);
}
.mm-c--def {
  background: var(--s2-pale);
  color: var(--s2);
  border: 1px solid var(--tint-15);
}
.mm-tbl__derived {
  margin: 0;
  padding: 0.45rem 0.7rem;
  border-top: 1px solid var(--border);
  background: var(--tint-4);
  font-size: 0.74rem;
  color: var(--text-dim);
  line-height: 1.5;
}
.mm-tbl__derived code {
  font-size: 0.7rem;
}

/* ── Tests — a chip row ── */
.mm-tests {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin: 0.9rem 0 0;
}
.mm-tests__lbl {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-right: 0.15rem;
}
.mm-chip {
  font-size: 0.72rem;
  color: var(--text-dim);
  padding: 0.16rem 0.5rem;
  background: var(--tint-4);
  border: 1px solid var(--border);
  border-radius: var(--tag-radius);
}

/* ══════════════════════════════════════════
   Responsive — flow + cards stack on narrow widths
   ══════════════════════════════════════════ */
@media (max-width: 680px) {
  .mm-flow {
    flex-direction: column;
    align-items: stretch;
    gap: 0.3rem;
  }
  .mm-link {
    flex-basis: auto;
    flex-direction: row;
    justify-content: center;
    gap: 1.4rem;
    padding: 0.35rem 0;
  }
  .mm-link__rail {
    flex-direction: row;
    gap: 0.4rem;
  }
  .mm-link__wire {
    width: 2px;
    height: 24px;
    background-image: linear-gradient(
      to bottom,
      var(--accent) 0 6px,
      transparent 6px 12px
    );
    background-size: 2px 12px;
    background-repeat: repeat-y;
  }
  .mm-link__wire::after {
    top: auto;
    bottom: -1px;
    right: 50%;
    transform: translateX(50%);
    border: none;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 6px solid var(--accent);
  }
  .mm-link__rail--back .mm-link__wire {
    background-image: linear-gradient(
      to bottom,
      var(--accent-muted) 0 6px,
      transparent 6px 12px
    );
  }
  .mm-link__rail--back .mm-link__wire::after {
    top: -1px;
    bottom: auto;
    border-top: none;
    border-bottom: 6px solid var(--accent-muted);
  }
  .mm-cards {
    grid-template-columns: 1fr;
  }
  .mm-data__row {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}

/* ══════════════════════════════════════════
   Entrance — staggered rise on load
   ══════════════════════════════════════════ */
.mm-hero > *,
.mm-flow,
.mm-thesis,
.mm-card,
.mm-chat {
  animation: mm-rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.mm-title {
  animation-delay: 0.12s;
}
.mm-lede {
  animation-delay: 0.22s;
}
.mm-flow {
  animation-delay: 0.38s;
}
.mm-thesis {
  animation-delay: 0.5s;
}

@keyframes mm-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes mm-march {
  to {
    background-position: 12px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mm-hero > *,
  .mm-flow,
  .mm-thesis,
  .mm-card,
  .mm-chat,
  .mm-link__wire {
    animation: none;
  }
}

/* ── Deep-link landing flash — cross-module links land on the thesis / a card / a section ── */
.mm-thesis:target,
.mm-card:target {
  border-radius: var(--radius-md);
  animation: target-highlight 2.6s ease-out;
}
@media (prefers-reduced-motion: reduce) {
  .mm-thesis:target,
  .mm-card:target {
    animation: none;
    box-shadow: 0 0 0 2px var(--accent-muted);
  }
}