/* ==========================================================================
   Private AI Partner — diagram layer
   Loads last, after private-ai-partner.css. Every diagram encodes something
   already stated in the copy: no invented numbers, no decorative geometry.
   ========================================================================== */

/* ---------- Shared figure frame ----------------------------------------- */
.fig {
  border: var(--border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overflow: hidden;
}
.fig__head {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: var(--border);
  background: color-mix(in oklab, var(--sec-accent) 7%, var(--surface));
}
.fig__title {
  font-family: var(--font-mono); font-size: var(--text-overline);
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--sec-accent);
}
.fig__tag {
  font-family: var(--font-mono); font-size: var(--text-overline);
  letter-spacing: 0.06em; color: var(--color-text-muted);
}
.fig__body { padding: var(--space-6); }
.fig__cap {
  padding: var(--space-4) var(--space-5);
  border-top: var(--border);
  background: var(--color-bg-section);
}
/* the strip spans the figure; the sentence keeps a reading measure */
.fig__cap p {
  max-width: 92ch;
  font-size: var(--text-caption);
  line-height: 1.5;
  color: var(--color-text-muted);
}

.chip {
  font-size: var(--text-caption);
  padding: 5px var(--space-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* ---------- Hero band: the operating architecture ----------------------- */
.archband {
  border-top: var(--border);
  background: var(--color-bg-section);
  padding-block: var(--space-8);
}
.arch__row {
  display: grid;
  grid-template-columns: 176px minmax(0, 1fr);
  gap: var(--space-5);
  align-items: center;
  padding: var(--space-5) var(--space-6);
  border-top: var(--border);
}
.arch__row:first-child { border-top: 0; }
.arch__k {
  font-family: var(--font-mono); font-size: var(--text-overline);
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--color-text-muted);
}
.arch__chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.arch__flow {
  grid-column: 2;
  font-family: var(--font-mono); font-size: var(--text-overline);
  letter-spacing: 0.06em; color: var(--color-text-muted);
  display: flex; align-items: center; gap: var(--space-3);
}
.arch__flow::before {
  content: ''; width: 1px; height: 18px;
  background: var(--color-border-strong);
}
.arch__row--flow { padding-block: var(--space-2); border-top: 0; }
.arch__row--gate { background: color-mix(in oklab, var(--warn) 8%, var(--surface)); }
.arch__row--gate .arch__k { color: var(--warn); }
.arch__row--gate .chip { border-color: color-mix(in oklab, var(--warn) 45%, transparent); color: var(--warn); }
.arch__row--agent { background: color-mix(in oklab, var(--accent) 7%, var(--surface)); }
.arch__row--agent .arch__k { color: var(--accent); }

/* ---------- 01 · Isolated app vs connected partner ---------------------- */
.vs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.vs__side { padding: var(--space-6); border-left: var(--border); }
.vs__side:first-child { border-left: 0; }
.vs__k {
  font-family: var(--font-mono); font-size: var(--text-overline);
  letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--color-text-muted);
}
.vs__side--live .vs__k { color: var(--sec-accent); }
.vs__side p { margin-top: var(--space-2); font-size: var(--text-small); color: var(--color-text-secondary); }
.vs__side svg { display: block; width: 100%; max-width: 340px; height: auto; margin: var(--space-5) auto 0; }

/* ---------- 02 · Permission ladder --------------------------------------- */
.ladder { position: relative; display: flex; flex-direction: column; gap: var(--space-3); }
.rung { display: grid; grid-template-columns: 224px minmax(0, 1fr); gap: var(--space-5); align-items: center; }
.rung__l { font-size: var(--text-small); color: var(--color-text-secondary); }
.rung__track { position: relative; height: 10px; }
.rung__bar {
  position: absolute; inset-block: 0; left: 0;
  border-radius: var(--radius-pill);
  background: color-mix(in oklab, var(--accent) 55%, transparent);
}
.rung--gated .rung__l { color: var(--warn); }
.rung--gated .rung__bar { background: color-mix(in oklab, var(--warn) 60%, transparent); }
.rung--never .rung__l { color: var(--danger); }
.rung--never .rung__bar { background: color-mix(in oklab, var(--danger) 30%, transparent); }
.ladder__gate {
  display: grid; grid-template-columns: 224px minmax(0, 1fr);
  gap: var(--space-5); align-items: center;
  margin-block: var(--space-2);
}
.ladder__gate span {
  font-family: var(--font-mono); font-size: var(--text-overline);
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--warn);
  text-align: right;
}
.ladder__gate i { display: block; height: 1px; border-top: 1px dashed color-mix(in oklab, var(--warn) 55%, transparent); }

/* ---------- 03 · Source wiring ------------------------------------------ */
.wire { display: grid; grid-template-columns: minmax(0, 1fr) 128px minmax(0, 0.8fr); align-items: center; gap: 0; }
.wire__ports { display: flex; flex-direction: column; gap: var(--space-3); }
.port { display: grid; grid-template-columns: 10px minmax(0, 1fr); gap: var(--space-3); align-items: center; }
.port i {
  width: 8px; height: 8px; border-radius: 50%;
  border: 1px solid var(--sec-accent); background: var(--color-bg);
}
.port span { font-size: var(--text-caption); color: var(--color-text-secondary); }
.wire__link { display: block; width: 100%; height: auto; }
.wire__node {
  border: 1px solid var(--sec-accent);
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--sec-accent) 10%, var(--surface));
  padding: var(--space-5);
  text-align: center;
}
.wire__node b { display: block; font-size: var(--text-small); color: var(--color-text-primary); font-weight: var(--weight-emphasize); }
.wire__node span { display: block; margin-top: 8px; font-size: var(--text-caption); color: var(--color-text-muted); }

/* ---------- 05 · Shadow Mode tally --------------------------------------- */
.tally { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-3); }
.tally__item {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
.tally__item i { display: block; width: 8px; height: 8px; border-radius: 50%; background: var(--color-text-muted); }
.tally__item span { display: block; margin-top: var(--space-3); font-size: var(--text-caption); color: var(--color-text-secondary); }
.tally__item em { display: block; margin-top: var(--space-3); border-top: 1px dashed var(--color-border-strong); }
.tally__item--ok i { background: var(--success); }
.tally__item--warn i { background: var(--warn); }
.tally__item--bad i { background: var(--danger); }

/* ---------- 07 · Autonomy ramp ------------------------------------------ */
.ramp { display: block; width: 100%; height: auto; }
.ramp text { font-family: var(--font-mono); fill: var(--color-text-muted); }
.ramp .ramp__lvl { font-size: 12px; }
.ramp .ramp__stage { font-size: 12px; fill: var(--color-text-secondary); }
.ramp .ramp__note { font-size: 12px; fill: var(--warn); }

/* ---------- 08 · What exists at the end of the day ---------------------- */
.artifacts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.artifact { padding: var(--space-5); background: var(--color-surface); border-left: var(--border); border-top: var(--border); }
.artifact:nth-child(-n+4) { border-top: 0; }
.artifact:nth-child(4n+1) { border-left: 0; }
.artifact svg { color: var(--color-text-muted); }
.artifact b { display: block; margin-top: var(--space-3); font-size: var(--text-small); color: var(--color-text-primary); font-weight: var(--weight-emphasize); }
.artifact span {
  display: inline-block; margin-top: var(--space-3);
  font-family: var(--font-mono); font-size: var(--text-overline);
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 3px var(--space-2); border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-strong); color: var(--color-text-muted);
}
.artifact--approved svg { color: var(--success); }
.artifact--approved span { color: var(--success); border-color: color-mix(in oklab, var(--success) 45%, transparent); }
.artifact--draft svg { color: var(--warn); }
.artifact--draft span { color: var(--warn); border-color: color-mix(in oklab, var(--warn) 45%, transparent); }

/* ---------- 11 · Scope spectrums ---------------------------------------- */
.spectrum__row {
  display: grid; grid-template-columns: 236px minmax(0, 1fr);
  gap: var(--space-6); align-items: center;
  padding: var(--space-5) 0; border-top: var(--border);
}
.spectrum__row:first-child { border-top: 0; padding-top: 0; }
.spectrum__k { font-size: var(--text-small); color: var(--color-text-primary); }
.spectrum__track { position: relative; height: 1px; background: var(--color-border-strong); }
.spectrum__track i {
  position: absolute; top: -4px; width: 1px; height: 9px;
  background: var(--color-border-strong);
}
.spectrum__track i:nth-child(1) { left: 0; background: var(--color-text-muted); }
.spectrum__track i:nth-child(2) { left: 33%; }
.spectrum__track i:nth-child(3) { left: 66%; }
.spectrum__track i:nth-child(4) { left: calc(100% - 1px); background: var(--sec-accent); height: 13px; top: -6px; }
.spectrum__ends { display: flex; justify-content: space-between; gap: var(--space-5); margin-top: var(--space-3); }
.spectrum__ends span { font-size: var(--text-caption); color: var(--color-text-muted); max-width: 34ch; }
.spectrum__ends span:last-child { text-align: right; color: var(--color-text-secondary); }

/* ---------- Card glyphs -------------------------------------------------- */
.glyph { color: var(--sec-accent); margin-bottom: var(--space-4); display: block; }
.found .glyph { color: var(--color-text-muted); }

/* ---------- Responsive --------------------------------------------------- */
@media (max-width: 1023px) {
  .arch__row { grid-template-columns: 1fr; gap: var(--space-3); }
  .arch__flow { grid-column: 1; }
  .vs { grid-template-columns: 1fr; }
  .vs__side { border-left: 0; border-top: var(--border); }
  .vs__side:first-child { border-top: 0; }
  .rung, .ladder__gate { grid-template-columns: 168px minmax(0, 1fr); gap: var(--space-4); }
  .wire { grid-template-columns: 1fr; gap: var(--space-5); }
  .wire__link { display: none; }
  .tally { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .artifacts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .artifact:nth-child(-n+4) { border-top: var(--border); }
  .artifact:nth-child(-n+2) { border-top: 0; }
  .artifact:nth-child(4n+1) { border-left: var(--border); }
  .artifact:nth-child(odd) { border-left: 0; }
  .spectrum__row { grid-template-columns: 1fr; gap: var(--space-3); }
}
@media (max-width: 767px) {
  .fig__body { padding: var(--space-5); }
  .rung, .ladder__gate { grid-template-columns: 1fr; gap: var(--space-2); }
  .ladder__gate span { text-align: left; }
  .rung__track { height: 8px; }
  .tally { grid-template-columns: 1fr; }
  .artifacts { grid-template-columns: 1fr; }
  .artifact { border-left: 0 !important; }
  .artifact:first-child { border-top: 0 !important; }
  .spectrum__ends { flex-direction: column; gap: var(--space-2); }
  .spectrum__ends span:last-child { text-align: left; color: var(--sec-accent); }
}