/* ==========================================================================
   System Operator Portfolio — design tokens (§2), typography (§3), motion (§5)
   ========================================================================== */

:root {
  /* §2.1 Colour matrix — "5:00 AM Cold Autumn Mist & Obsidian" */
  --color-bg-base: #07090E;
  --color-bg-surface: #0D1117;
  --color-bg-elevated: #131924;
  --color-border-mist: #1E2533;
  --color-border-hard: #2A3447;
  --color-text-bone: #E2E5EC;
  --color-text-muted: #8490A6;
  --color-cobalt-glow: #2563EB;
  --color-cobalt-pulse: #3B82F6;

  /* §3.1 Font stack */
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', monospace;
  --font-grotesk: 'Space Grotesk', system-ui, sans-serif;

  /* §3.2 Scale & hierarchy matrix */
  --fs-overline: 10px;
  --fs-timestamp: 11px;
  --fs-body: 12px;
  --fs-section: 14px;
  --fs-node: 18px;
  --fs-ident: 24px;

  /* §5.1 Vault-door inertia physics */
  --ease-vault: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-vault: 380ms;
}

/* §2.2 Panel finish: drywall/ceramic tactility. Zero radius, no blur. */
*,
*::before,
*::after {
  box-sizing: border-box;
  border-radius: 0;
}

html {
  background: var(--color-bg-base);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--color-text-bone);
  background-color: var(--color-bg-base);
  /* §2.2 Simulated hairline coordinate grid. The CSS value (32px) is
     authoritative over the prose (24px) — see design spec §4.3. */
  background-size: 32px 32px;
  background-image:
    linear-gradient(to right, rgba(30, 37, 51, 0.35) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 37, 51, 0.35) 1px, transparent 1px);
}

/* §2.2 Selection: cold cobalt fill, crisp white contrast. */
::selection {
  background: #2563EB;
  color: #FFFFFF;
}

.overline {
  font-size: var(--fs-overline);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.25;
}

a {
  color: inherit;
}

/* Accessible focus ring, in the cobalt accent (§9). */
:focus-visible {
  outline: 2px solid var(--color-cobalt-glow);
  outline-offset: 2px;
}

/* Grid children must be allowed to shrink below their content width or
   long unbroken paths blow the layout out on narrow viewports. */
.explorer > *,
.runlevels > div > *,
.log__entry > * {
  min-width: 0;
}

/* §5.1 Vault-door motion — reduced-motion users get the resting state
   immediately. Not decoration: a 380ms slide is a vestibular trigger. */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   §8/01 Chronograph telemetry header
   ========================================================================== */

/* §8/01 — 6px square escapement diode. Square, not round: zero radius holds. */
.led {
  width: 6px;
  height: 6px;
  background: var(--color-cobalt-pulse);
  transition: opacity 120ms linear; /* §5.2 pulse 1.0 → 0.2 in 120ms */
}

.chrono {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 44px;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 0 14px;
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border-mist);
  font-size: var(--fs-timestamp);
  color: var(--color-text-muted);
  overflow-x: auto;
  white-space: nowrap;
}

.chrono__seg {
  display: flex;
  align-items: center;
  gap: 7px;
}

.chrono__seg--end {
  margin-left: auto;
  gap: 10px;
}

.chrono__node {
  color: var(--color-text-bone);
}

.toggle {
  font: inherit;
  font-size: var(--fs-timestamp);
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border-mist);
  padding: 3px 9px;
  cursor: pointer;
  transition:
    color var(--dur-vault) var(--ease-vault),
    border-color var(--dur-vault) var(--ease-vault);
}

.toggle[aria-pressed="true"] {
  color: var(--color-text-bone);
  border-color: var(--color-cobalt-pulse);
}

/* ==========================================================================
   §8/02 Mechanical channel selector
   Zero margins between tabs, 1px internal separators, 0ms click latency.
   ========================================================================== */

.channels {
  display: flex;
  border-bottom: 1px solid var(--color-border-mist);
  background: var(--color-bg-surface);
  overflow-x: auto;
}

.channels button {
  font: inherit;
  font-size: var(--fs-timestamp);
  background: var(--color-bg-surface);
  color: var(--color-text-muted);
  border: 0;
  border-right: 1px solid var(--color-border-mist);
  border-top: 1px solid transparent;
  border-bottom: 1px solid transparent;
  padding: 9px 16px;
  cursor: pointer;
  display: flex;
  gap: 8px;
  align-items: center;
  white-space: nowrap;
  transition:
    color var(--dur-vault) var(--ease-vault),
    background-color var(--dur-vault) var(--ease-vault);
}

.channels button[aria-selected="true"] {
  color: var(--color-text-bone);
  background: #101A2E;
  border-top-color: var(--color-cobalt-pulse);
  box-shadow: inset 0 -1px 0 var(--color-cobalt-pulse);
}

.channels button[aria-selected="false"] .glyph {
  color: var(--color-border-hard);
}

.channels button[aria-selected="true"] .glyph {
  color: var(--color-cobalt-pulse);
}

.channels button:focus-visible {
  outline: 2px solid var(--color-cobalt-glow);
  outline-offset: -2px;
}

/* §5.1 — content swaps in place using the vault-door fade. */
.channel {
  animation: vault var(--dur-vault) var(--ease-vault);
}

@keyframes vault {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ==========================================================================
   §1.3 / §4.2 Corner-anchored doctrine block
   ========================================================================== */

.doctrine {
  padding: 26px 16px 22px;
  max-width: 1280px;
  margin: 0 auto;
}

.doctrine__name {
  font-family: var(--font-grotesk);
  font-size: var(--fs-ident);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

.doctrine__role {
  margin: 6px 0 0;
}

.doctrine__statement {
  max-width: 78ch;
  color: var(--color-text-bone);
  margin: 14px 0 0;
}

.doctrine__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 18px 0 0;
}

.doctrine__facts > div {
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.doctrine__facts dt,
.doctrine__facts dd {
  margin: 0;
}

.doctrine__facts dd {
  color: var(--color-text-bone);
}

/* ==========================================================================
   §8/03 Split directory explorer & inspector (5 columns / 7 columns)
   ========================================================================== */

.explorer {
  display: grid;
  grid-template-columns: 5fr 7fr;
  border-top: 1px solid var(--color-border-mist);
  max-width: 1280px;
  margin: 0 auto;
}

@media (max-width: 860px) {
  .explorer {
    grid-template-columns: 1fr;
  }
}

.explorer__tree {
  border-right: 1px solid var(--color-border-mist);
}

.explorer__inspector {
  min-width: 0;
}

/* --- Left panel: filter + tags + tree --- */

.filter {
  padding: 12px;
  border-bottom: 1px solid var(--color-border-mist);
  position: relative;
}

.filter input {
  width: 100%;
  font: inherit;
  color: var(--color-text-bone);
  background: var(--color-bg-base);
  border: 1px solid var(--color-border-mist);
  padding: 6px 26px 6px 8px;
}

.filter input:focus {
  outline: none;
  border-color: var(--color-cobalt-pulse);
}

.filter__hint {
  position: absolute;
  right: 22px;
  top: 34px;
  pointer-events: none;
}

.tags {
  display: flex;
  gap: 6px;
  margin-top: 9px;
  flex-wrap: wrap;
}

.tags button {
  font: inherit;
  font-size: var(--fs-overline);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border-mist);
  padding: 3px 8px;
  cursor: pointer;
}

.tags button[aria-pressed="true"] {
  color: var(--color-text-bone);
  border-color: var(--color-cobalt-pulse);
}

.tree {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tree__item {
  display: block;
  width: 100%;
  text-align: left;
  font: inherit;
  background: transparent;
  color: var(--color-text-muted);
  border: 0;
  border-bottom: 1px solid var(--color-border-mist);
  padding: 9px 12px;
  cursor: pointer;
  overflow-wrap: anywhere;
}

.tree__item:hover {
  background: var(--color-bg-surface);
  color: var(--color-text-bone);
}

.tree__item[aria-current="true"] {
  background: var(--color-bg-elevated);
  color: var(--color-text-bone);
  box-shadow: inset 2px 0 0 var(--color-cobalt-pulse);
}

.tree__item .glyph {
  color: var(--color-cobalt-pulse);
  margin-right: 8px;
}

/* --- Right panel: the node inspector --- */

.node {
  padding: 20px;
  border-bottom: 1px solid var(--color-border-mist);
}

.node__head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  justify-content: space-between;
}

.node__title {
  font-family: var(--font-grotesk);
  font-size: var(--fs-node);
  font-weight: 700;
  margin: 0;
}

.node__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.node__tagline {
  color: var(--color-text-muted);
  margin: 6px 0 0;
}

.node__desc {
  margin: 12px 0 0;
  max-width: 88ch;
}

.node__highlights {
  margin: 12px 0 0;
  padding-left: 18px;
}

.node__highlights li {
  margin: 3px 0;
}

.tag {
  font-size: var(--fs-overline);
  letter-spacing: 0.08em;
  border: 1px solid var(--color-cobalt-pulse);
  color: var(--color-cobalt-pulse);
  padding: 2px 7px;
}

/* §8/03 — metric key-value grid, 1px border cells. */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  border: 1px solid var(--color-border-mist);
  margin: 14px 0 0;
}

.metrics > div {
  border-right: 1px solid var(--color-border-mist);
  border-bottom: 1px solid var(--color-border-mist);
  padding: 8px 10px;
}

.metrics dt,
.metrics dd {
  margin: 0;
}

.metrics dd {
  margin-top: 3px;
  color: var(--color-text-bone);
}

/* §8/03 — schema snippet box. */
.schema {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-mist);
  padding: 12px;
  overflow-x: auto;
  margin: 14px 0 0;
  font-size: var(--fs-timestamp);
  line-height: 1.7;
}

.schema code {
  font-family: var(--font-mono);
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.actions button,
.actions a {
  font: inherit;
  font-size: var(--fs-timestamp);
  text-decoration: none;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border-mist);
  padding: 5px 11px;
  cursor: pointer;
}

.actions button:hover,
.actions a:hover {
  color: var(--color-text-bone);
  border-color: var(--color-cobalt-pulse);
}

/* --------------------------------------------------------------------------
   Progressive enhancement contract.
   Without JS the filter, tree, telemetry toggles and copy actions are inert
   controls that do nothing when clicked: hide them. The channel tabs are
   inert too, so every channel is un-hidden and stacked in document order,
   and all four project articles read as plain crawlable content. With JS,
   the vault doors and the split explorer take over.
   -------------------------------------------------------------------------- */

html:not(.js) .filter,
html:not(.js) .tree,
html:not(.js) [data-action],
html:not(.js) .toggle,
html:not(.js) #llms-open {
  display: none;
}

html:not(.js) .channel[hidden] {
  display: block;
}

html:not(.js) .channels {
  display: none;
}

html:not(.js) .explorer {
  grid-template-columns: 1fr;
}

html:not(.js) .explorer__tree {
  border-right: 0;
}

html:not(.js) .node {
  border-top: 1px solid var(--color-border-mist);
}

/* ==========================================================================
   §6.2 / §6.3 Spec sheets — runlevels and the chrono audit log
   ========================================================================== */

.spec-sheet {
  max-width: 1280px;
  margin: 0 auto;
  padding: 26px 16px;
}

.spec-sheet__title {
  margin: 0 0 16px;
}

.runlevels {
  margin: 0;
  border-top: 1px solid var(--color-border-mist);
}

.runlevels > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0 20px;
  border-bottom: 1px solid var(--color-border-mist);
  padding: 13px 0;
}

@media (max-width: 640px) {
  .runlevels > div {
    grid-template-columns: 1fr;
  }
}

.runlevels dt {
  color: var(--color-cobalt-pulse);
  font-size: var(--fs-timestamp);
  letter-spacing: 0.08em;
}

.runlevels dd {
  margin: 0 0 5px;
  color: var(--color-text-bone);
}

.runlevels dd:last-child {
  margin-bottom: 0;
}

.log {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border-mist);
}

.log__entry {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border-mist);
}

@media (max-width: 640px) {
  .log__entry {
    grid-template-columns: 1fr;
  }
}

.log__stamp {
  color: var(--color-cobalt-pulse);
  font-size: var(--fs-timestamp);
}

.log__title {
  font-family: var(--font-grotesk);
  font-size: var(--fs-section);
  font-weight: 700;
  margin: 0;
}

.log__org {
  color: var(--color-text-muted);
  margin: 4px 0 0;
}

.log__desc {
  margin: 8px 0 0;
  max-width: 78ch;
}

/* ==========================================================================
   §8/04 Terminal dispatch form
   ========================================================================== */

.dispatch {
  display: grid;
  gap: 5px;
  max-width: 74ch;
}

.dispatch label {
  margin-top: 12px;
}

.dispatch input,
.dispatch select,
.dispatch textarea {
  font: inherit;
  color: var(--color-text-bone);
  background: var(--color-bg-base);
  border: 1px solid var(--color-border-mist);
  padding: 7px 9px;
  width: 100%;
}

/* §8/04 validation state — high-contrast cobalt focus, no outline. */
.dispatch input:focus,
.dispatch select:focus,
.dispatch textarea:focus {
  border-color: #3B82F6;
  outline: none;
}

.dispatch textarea {
  resize: vertical;
}

#d-count {
  color: var(--color-cobalt-pulse);
}

.dispatch button {
  font: inherit;
  margin-top: 16px;
  justify-self: start;
  color: var(--color-bg-base);
  background: var(--color-cobalt-pulse);
  border: 1px solid var(--color-cobalt-pulse);
  padding: 8px 20px;
  cursor: pointer;
  transition: background-color var(--dur-vault) var(--ease-vault);
}

/* Inverts to an outline rather than brightening the fill: cobalt-glow behind
   12px text is 3.85:1, under the 4.5:1 AA floor. Cobalt-pulse text on the base
   ground is 5.41:1, and it is the hover idiom the rest of this sheet uses. */
.dispatch button:hover {
  color: var(--color-cobalt-pulse);
  background: transparent;
}

.channels-list {
  margin: 30px 0 0;
  border-top: 1px solid var(--color-border-mist);
  max-width: 74ch;
}

.channels-list > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px solid var(--color-border-mist);
}

.channels-list dt,
.channels-list dd {
  margin: 0;
}

.channels-list a {
  color: var(--color-text-bone);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border-hard);
  overflow-wrap: anywhere;
}

.channels-list a:hover {
  color: var(--color-cobalt-pulse);
  border-bottom-color: var(--color-cobalt-pulse);
}

/* ==========================================================================
   §7.1 Dual-optic symmetry — MACHINE rendering.
   Chrome and panels are hidden; only the model survives — plus the toggle
   that leaves. The OPTIC button lives in the chrono bar, so hiding the bar
   wholesale strands the visitor in machine mode with no way back.
   ========================================================================== */

html.optic-machine .channels,
html.optic-machine .channel,
html.optic-machine .chrono__seg:not(.chrono__seg--end) {
  display: none;
}

.machine {
  margin: 0;
  padding: 22px 16px;
  max-width: 100ch;
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--color-text-bone);
  white-space: pre-wrap;
  word-break: break-word;
}

html:not(.optic-machine) .machine {
  display: none;
}

/* ==========================================================================
   §7.3 llms.txt drawer
   ========================================================================== */

.modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(7, 9, 14, 0.86);
  display: grid;
  place-items: center;
  padding: 20px;
}

.modal[hidden] {
  display: none;
}

.modal__panel {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-hard);
  width: min(880px, 100%);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border-mist);
}

.modal__head .overline {
  flex: 1;
}

.modal__head button {
  font: inherit;
  font-size: var(--fs-timestamp);
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border-mist);
  padding: 4px 10px;
  cursor: pointer;
}

.modal__head button:hover {
  color: var(--color-text-bone);
  border-color: var(--color-cobalt-pulse);
}

.modal__body {
  margin: 0;
  padding: 16px;
  overflow: auto;
  white-space: pre-wrap;
  color: var(--color-text-bone);
}

/* ==========================================================================
   §4.1 Anchored footer
   ========================================================================== */

.anchored {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  padding: 12px 16px;
  margin-top: 30px;
  border-top: 1px solid var(--color-border-mist);
  font-size: var(--fs-timestamp);
  color: var(--color-text-muted);
}

.anchored button {
  font: inherit;
  font-size: var(--fs-timestamp);
  background: transparent;
  color: var(--color-cobalt-pulse);
  border: 1px solid var(--color-border-mist);
  padding: 3px 9px;
  cursor: pointer;
}

.anchored button:hover {
  border-color: var(--color-cobalt-pulse);
}