/* ────────────────────────────────────────────────────────────────────
   AI Architecture page — Halo 3 HUD-flavored palette using the site's
   global blue variables (defined in index.css):
     --blue-darker  → tile / focused-panel BACKGROUNDS (darker than
                      --blue-deep so the tiles read as their own layer
                      distinct from larger surfaces using --blue-deep,
                      e.g., the SingleExperience mobile overlay)
     --blue-mid     → tile borders + accent text + tile-icon color
     --blue-bright  → hover states + focused-panel title + human-card
                      accent + back-button hover
   Sharp 2px corners, soft glow on hover. Aldrich on titles, default
   body font on prose.
   ──────────────────────────────────────────────────────────────────── */

#AIArchitectureContainer {
  height: 100dvh;
  width: 100%;
  display: flex;
  align-items: center;
  flex-direction: column;
  position: absolute;
  overflow: hidden;
  /* Prevent page-level scroll — matches Manifesto/Credentials pattern */
  color: rgb(var(--text-primary));
  z-index: 10;
}

#AIArchitectureInnerContainer {
  flex: 1 1 auto;
  min-height: 0;
  /* flex sizing (not height: 100%) so the sibling Close button gets
     its own flex space at the bottom — height: 100% would consume the
     whole viewport and overflow: hidden on the container would clip
     Close, particularly on short mobile viewports. */
  width: 100%;
  max-width: 1280px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  /* Suppress any rogue horizontal scroll from grid items / borders. */
  padding: 4rem 2rem 2rem;
  box-sizing: border-box;
}

#AIArchitectureInnerContainer h1 {
  font-family: "Aldrich", sans-serif;
  font-size: 2.4rem;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: rgb(var(--blue-mid));
  margin: 0 0 1rem 0;
  text-shadow: 0 0 12px rgba(var(--blue-mid),0.3);
}

.intro {
  font-size: 1.05rem;
  line-height: 1.65;
  max-width: 880px;
  margin: 0 0 3rem 0;
  color: rgba(var(--text-primary),0.82);
}

/* ── Stage / focused state container ──────────────────────────────── */

.ai-arch-stage {
  position: relative;
}

/* ── Grid of tiles (overview state) ────────────────────────────────── */

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.tile {
  /* Reset button styling */
  appearance: none;
  border: 1px solid rgba(var(--blue-mid),0.35);
  background-color: rgba(var(--blue-darker),0.55);
  color: inherit;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  box-sizing: border-box;

  padding: 1.5rem 1.5rem 1.75rem;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 180px;
  min-width: 0;
  /* min-width: 0 prevents grid items from blowing out their column
     when their intrinsic content (e.g. long text without breaks)
     is wider than the grid track. */

  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.tile:hover {
  border-color: rgba(var(--blue-bright),0.7);
  background-color: rgba(var(--blue-darker),0.7);
  box-shadow: 0 0 24px rgba(var(--blue-mid),0.18);
}

.tile:focus-visible {
  outline: 2px solid rgb(var(--blue-bright));
  outline-offset: 3px;
}

.tile-icon {
  color: rgb(var(--blue-mid));
  display: flex;
  align-items: center;
}

.tile-icon .MuiSvgIcon-root {
  font-size: 2rem;
}

.tile-title {
  margin: 0;
  font-family: "Aldrich", sans-serif;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: rgb(var(--blue-mid));
}

.tile-summary {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
  color: rgba(var(--text-primary),0.78);
}

/* ── Human-in-the-loop card ────────────────────────────────────────── */
/*
   Spans the full width across the grid bottom (grid-column: 1 / -1).
   Visually distinct from the tiles so the role of the human reads at
   a glance: the loop closure, not a peer to the layers above.
*/

.human-card {
  grid-column: 1 / -1;
  margin-top: 0.5rem;
  padding: 1.5rem 1.75rem;
  border: 1px dashed rgba(var(--blue-bright), 0.5);
  background-color: rgba(var(--blue-darker), 0.4);
  border-radius: 2px;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  box-sizing: border-box;
  min-width: 0;
}

.human-icon {
  color: rgb(var(--blue-bright));
  font-size: 2.25rem !important;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.human-text {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.human-label {
  font-family: "Aldrich", sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: rgb(var(--blue-bright));
}

.human-body {
  font-size: 0.95rem;
  line-height: 1.55;
  color: rgba(var(--text-primary),0.82);
}

/* ── Focused tile (detail state) ───────────────────────────────────── */
/*
   Absolute-positioned overlay on top of the (still-mounted but
   faded) grid. Without this, the focused panel would sit BELOW the
   invisible grid in the inner container's scroll flow.
*/

.tile-focused {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;

  border: 1px solid rgba(var(--blue-bright), 0.55);
  background-color: rgba(var(--blue-darker), 0.6);
  border-radius: 2px;
  padding: 2rem 2.25rem 2.5rem;
  box-shadow: 0 0 40px rgba(var(--blue-mid),0.2);

  /* Constrain width so the focused panel feels purposeful, not just
     a stretched tile. */
  max-width: 920px;
  margin: 0 auto;
  box-sizing: border-box;
}

.tile-focused-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(var(--blue-mid),0.25);
}

.tile-icon-large .MuiSvgIcon-root {
  font-size: 2.6rem;
}

.tile-focused-title {
  margin: 0;
  font-family: "Aldrich", sans-serif;
  font-size: 1.7rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: rgb(var(--blue-bright));
  flex: 1;
}

.back-button {
  appearance: none;
  background-color: transparent;
  color: rgb(var(--blue-mid));
  border: 1px solid rgba(var(--blue-mid),0.5);
  padding: 0.5rem 1.25rem;
  font-family: "Aldrich", sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.2s ease;
}

.back-button:hover {
  border-color: rgb(var(--blue-bright));
  color: rgb(var(--blue-bright));
  box-shadow: 0 0 12px rgba(var(--blue-bright),0.3);
}

.tile-focused-summary {
  margin: 0 0 1.5rem 0;
  font-size: 1.05rem;
  line-height: 1.6;
  color: rgba(var(--text-primary),0.9);
  font-style: italic;
}

.tile-detail-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.tile-detail-list li {
  padding: 1rem 1.25rem;
  border-left: 2px solid rgba(var(--blue-mid), 0.5);
  background-color: rgba(var(--blue-darker), 0.4);
  border-radius: 0 2px 2px 0;
  box-sizing: border-box;
}

.tile-detail-list h3 {
  margin: 0 0 0.5rem 0;
  font-family: "Aldrich", sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: rgb(var(--blue-mid));
}

.tile-detail-list p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.55;
  color: rgba(var(--text-primary),0.82);
}

/* ── Responsive adjustments ────────────────────────────────────────── */

@media (max-width: 1050px) {
  #AIArchitectureInnerContainer {
    padding: 3rem 1.5rem 1.5rem;
  }

  #AIArchitectureInnerContainer h1 {
    font-size: 2rem;
  }

  .tile-focused {
    padding: 1.5rem 1.5rem 2rem;
  }

  .tile-focused-title {
    font-size: 1.35rem;
  }
}

@media (max-width: 720px) {
  #AIArchitectureInnerContainer {
    padding: 2rem 1rem 1.5rem;
    /* Slight side margin only — let tiles take the rest of the page
       width so the page reads centered on phones. */
  }

  #AIArchitectureInnerContainer h1 {
    font-size: 1.7rem;
    letter-spacing: 0.3px;
  }

  .intro {
    font-size: 0.95rem;
    margin-bottom: 2rem;
  }

  .tile-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .tile {
    min-height: auto;
    padding: 1.25rem;
  }

  .human-card {
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.25rem;
  }

  .tile-focused-header {
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .tile-focused-title {
    font-size: 1.15rem;
    flex: 1 1 100%;
    order: -1;
  }

  .back-button {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
  }
}