/* imagegate docs — "blueprint": deep cyanotype navy, fine line work,
   one muted brass accent. Light scheme "vellum" is the same drawing on
   drafting film. */

:root {
  --ig-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --ig-brass: #c9a15a;
}

[data-md-color-scheme="blueprint"] {
  --ig-bg: #0f1f31;
  --ig-bg-2: #13263c;
  --ig-bg-3: #182f4a;
  --ig-line: #c9d6e6;
  --ig-line-soft: rgba(201, 214, 230, 0.16);
  --ig-line-faint: rgba(201, 214, 230, 0.07);
  --ig-dim: #7f95ad;
  --ig-text: #e6edf5;
  --ig-text-2: #a9bacd;
  --ig-accent: #c9a15a;
  --ig-link: #9cc3ee;
  --ig-pass: #8fc9a3;
  --ig-deny: #e59a7a;

  --md-default-bg-color: var(--ig-bg);
  --md-default-fg-color: var(--ig-text);
  --md-default-fg-color--light: var(--ig-text-2);
  --md-default-fg-color--lighter: var(--ig-dim);
  --md-default-fg-color--lightest: var(--ig-line-soft);
  --md-primary-fg-color: #0b1827;
  --md-primary-fg-color--light: #10213a;
  --md-primary-fg-color--dark: #08111c;
  --md-primary-bg-color: var(--ig-text);
  --md-accent-fg-color: var(--ig-accent);
  --md-typeset-color: var(--ig-text);
  --md-typeset-a-color: var(--ig-link);
  --md-code-bg-color: #0b1827;
  --md-code-fg-color: #d8e2ee;
  --md-code-hl-keyword-color: #9cc3ee;
  --md-code-hl-string-color: #a8d5b5;
  --md-code-hl-name-color: #d8e2ee;
  --md-code-hl-function-color: #d8e2ee;
  --md-code-hl-comment-color: #8197ae;
  --md-code-hl-number-color: #d9b26a;
  --md-code-hl-constant-color: #d9b26a;
  --md-footer-bg-color: #0b1827;
  --md-footer-bg-color--dark: #08111c;
  --md-admonition-bg-color: var(--ig-bg-2);
  --md-typeset-table-color: var(--ig-line-soft);
  --md-shadow-z1: none;
  --md-shadow-z2: none;
}

[data-md-color-scheme="vellum"] {
  --ig-bg: #f3f5f8;
  --ig-bg-2: #e9edf2;
  --ig-bg-3: #dfe5ec;
  --ig-line: #1b3350;
  --ig-line-soft: rgba(27, 51, 80, 0.18);
  --ig-line-faint: rgba(27, 51, 80, 0.06);
  --ig-dim: #4a5f77;
  --ig-text: #13263c;
  --ig-text-2: #3d5470;
  --ig-accent: #85621f;
  --ig-link: #1f5fa6;
  --ig-pass: #246340;
  --ig-deny: #a1441f;

  --md-default-bg-color: var(--ig-bg);
  --md-default-fg-color: var(--ig-text);
  --md-default-fg-color--light: var(--ig-text-2);
  --md-default-fg-color--lighter: var(--ig-dim);
  --md-default-fg-color--lightest: var(--ig-line-soft);
  --md-primary-fg-color: #13263c;
  --md-primary-fg-color--light: #1b3350;
  --md-primary-fg-color--dark: #0b1827;
  --md-primary-bg-color: #e6edf5;
  --md-accent-fg-color: var(--ig-accent);
  --md-typeset-color: var(--ig-text);
  --md-typeset-a-color: var(--ig-link);
  --md-code-bg-color: #e9edf2;
  --md-code-fg-color: #13263c;
  --md-code-hl-keyword-color: #1f5fa6;
  --md-code-hl-string-color: #246340;
  --md-code-hl-name-color: #13263c;
  --md-code-hl-comment-color: #526479;
  --md-code-hl-number-color: #7a5a1f;
  --md-code-hl-constant-color: #5a44c2;
  --md-code-hl-function-color: #13263c;
  --md-footer-bg-color: #13263c;
  --md-footer-bg-color--dark: #0b1827;
  --md-admonition-bg-color: #f8fafc;
  --md-typeset-table-color: var(--ig-line-soft);
  --md-shadow-z1: none;
  --md-shadow-z2: none;
}

/* Material declares these on :root as var(--md-default-fg-color…), so they
   resolve against its default light palette and are inherited already
   resolved. Re-declare them inside each scheme so they use ours. */
[data-md-color-scheme="blueprint"], [data-md-color-scheme="vellum"] {
  --md-typeset-color: var(--md-default-fg-color);
  --md-admonition-fg-color: var(--md-default-fg-color);
  --md-code-hl-name-color: var(--md-code-fg-color);
  --md-code-hl-variable-color: var(--md-code-fg-color);
  --md-code-hl-generic-color: var(--md-code-fg-color);
  --md-code-hl-operator-color: var(--md-default-fg-color--light);
  --md-code-hl-punctuation-color: var(--md-default-fg-color--light);
  --md-code-hl-special-color: var(--md-code-hl-number-color);
  --md-mermaid-sequence-actorman-bg-color: var(--md-mermaid-label-bg-color);
  --md-mermaid-sequence-actorman-line-color: var(--md-mermaid-edge-color);
  --md-mermaid-sequence-box-bg-color: var(--md-mermaid-node-bg-color);
  --md-mermaid-sequence-box-fg-color: var(--md-mermaid-edge-color);
  --md-mermaid-sequence-loop-fg-color: var(--md-mermaid-edge-color);
}

/* drafting grid behind every page */
body {
  background-color: var(--ig-bg);
  background-image:
    linear-gradient(var(--ig-line-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--ig-line-faint) 1px, transparent 1px);
  background-size: 80px 80px;
}
.md-main, .md-container { background: transparent; }

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

.md-header { box-shadow: none; border-bottom: 1px solid rgba(201, 214, 230, 0.16); }
.md-header__title { font-weight: 600; letter-spacing: -0.01em; }
.md-header__button.md-logo img { height: 1.6rem; }
.md-tabs { border-bottom: 1px solid rgba(201, 214, 230, 0.16); }
.md-tabs__link {
  font-family: var(--ig-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}
.md-tabs__link--active, .md-tabs__link:hover { opacity: 1; color: var(--ig-brass); }
.md-search__form { border-radius: 2px; }

/* ---------- typography ---------- */

.md-typeset { font-size: 0.8rem; line-height: 1.72; }
.md-typeset h1, .md-typeset h2, .md-typeset h3 { color: var(--md-default-fg-color); letter-spacing: -0.02em; }
.md-typeset h1 { font-weight: 700; font-size: 2.1rem; }
.md-typeset h2 {
  font-weight: 650;
  font-size: 1.3rem;
  margin-top: 2.6em;
  padding-top: 1em;
  border-top: 1px solid var(--ig-line-soft);
  position: relative;
}
/* drawing-style section reference above each h2: "SECTION 02" */
.md-content__inner { counter-reset: ig-section; }
.md-typeset h2 { counter-increment: ig-section; }
.md-typeset h2::before {
  content: "SECTION " counter(ig-section, decimal-leading-zero);
  display: block;
  margin-bottom: 0.4rem;
  font-family: var(--ig-mono);
  font-size: 0.56rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--ig-dim);
}
.md-typeset h3 { font-weight: 650; font-size: 0.98rem; }

.md-typeset a { text-decoration: underline; text-decoration-color: var(--ig-line-soft); text-underline-offset: 3px; }
.md-typeset a:hover { color: var(--ig-accent); text-decoration-color: currentColor; }
.md-typeset .headerlink { text-decoration: none; }

.md-typeset code { border-radius: 2px; font-size: 0.82em; }
.md-typeset .highlight, .md-typeset pre { border-radius: 0; }
.md-typeset .highlight { border: 1px solid var(--ig-line-soft); }
.md-typeset pre > code { border-radius: 0; }

/* ---------- tables: drawing title-block style ---------- */

.md-typeset table:not([class]) {
  border: 1px solid var(--ig-line-soft);
  border-radius: 0;
  font-size: 0.72rem;
  background: transparent;
}
.md-typeset table:not([class]) th {
  background: var(--ig-bg-2);
  color: var(--ig-dim);
  font-family: var(--ig-mono);
  font-size: 0.56rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--ig-line-soft);
}
.md-typeset table:not([class]) td { border-top: 1px solid var(--ig-line-faint); }
.md-typeset table:not([class]) tr:hover { background: var(--ig-line-faint); box-shadow: none; }

/* ---------- admonitions ---------- */

.md-typeset .admonition, .md-typeset details {
  border-radius: 0;
  border-width: 1px;
  border-color: var(--ig-line-soft) !important;
  border-left: 3px solid var(--ig-dim) !important;
  box-shadow: none;
  font-size: 0.76rem;
}
.md-typeset .admonition-title, .md-typeset summary {
  font-family: var(--ig-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: transparent !important;
}
.md-typeset .admonition-title::before, .md-typeset summary::before { background-color: var(--ig-dim) !important; }
.md-typeset .admonition.warning, .md-typeset .admonition.danger, .md-typeset details.warning { border-left-color: var(--ig-accent) !important; }
.md-typeset .warning > .admonition-title::before, .md-typeset .danger > .admonition-title::before { background-color: var(--ig-accent) !important; }

/* ---------- navigation ---------- */

.md-nav__item--section > .md-nav__link, .md-nav--secondary > .md-nav__title {
  font-family: var(--ig-mono);
  font-size: 0.58rem !important;
  font-weight: 500 !important;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ig-dim) !important;
}
/* Drawer titles sit on Material's tinted title bar: use the stronger tone. */
.md-nav__item .md-nav__title { color: var(--md-default-fg-color--light); }
.md-nav__link--active { color: var(--md-default-fg-color) !important; font-weight: 600; }
.md-nav__link--active::before { content: "— "; color: var(--ig-accent); }

/* ---------- mermaid: line drawings ---------- */

[data-md-color-scheme="blueprint"], [data-md-color-scheme="vellum"] {
  --md-mermaid-font-family: var(--ig-mono);
  --md-mermaid-edge-color: var(--ig-line);
  --md-mermaid-node-bg-color: var(--ig-bg-2);
  --md-mermaid-node-fg-color: var(--ig-text);
  --md-mermaid-label-bg-color: var(--ig-bg);
  --md-mermaid-label-fg-color: var(--ig-text-2);
  --md-mermaid-sequence-actor-bg-color: var(--ig-bg-2);
  --md-mermaid-sequence-actor-border-color: var(--ig-line);
  --md-mermaid-sequence-actor-fg-color: var(--ig-text);
  --md-mermaid-sequence-actor-line-color: var(--ig-dim);
  --md-mermaid-sequence-message-line-color: var(--ig-line);
  --md-mermaid-sequence-message-fg-color: var(--ig-text);
  --md-mermaid-sequence-note-bg-color: var(--ig-bg-3);
  --md-mermaid-sequence-note-border-color: var(--ig-accent);
  --md-mermaid-sequence-note-fg-color: var(--ig-text);
  --md-mermaid-sequence-loop-bg-color: transparent;
  --md-mermaid-sequence-loop-border-color: var(--ig-dim);
  --md-mermaid-sequence-label-bg-color: var(--ig-bg-3);
  --md-mermaid-sequence-label-fg-color: var(--ig-text);
  --md-mermaid-sequence-number-bg-color: var(--ig-accent);
  --md-mermaid-sequence-number-fg-color: #0f1f31;
}
.md-typeset .mermaid { margin: 1.6em 0; padding: 1.4em 1em; border: 1px solid var(--ig-line-soft); background: var(--ig-line-faint); }

/* ---------- footer ---------- */

.md-footer { border-top: 1px solid rgba(201, 214, 230, 0.16); }
.md-footer-meta { font-family: var(--ig-mono); font-size: 0.6rem; letter-spacing: 0.06em; }

/* ======================================================================
   Home page
   ====================================================================== */

.md-typeset .ig-home h2::before { content: none; }

.ig-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 3rem;
  align-items: center;
  padding: 2.8rem 0 1.6rem;
}
@media (max-width: 960px) { .ig-hero { grid-template-columns: 1fr; gap: 1.6rem; } }

.ig-ref {
  font-family: var(--ig-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ig-dim);
  margin: 0 0 1.1rem;
}
.ig-ref b { color: var(--ig-accent); font-weight: 500; }
.md-typeset .ig-hero h1.ig-title {
  font-size: clamp(2.3rem, 5.4vw, 3.6rem);
  line-height: 1.04;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin: 0 0 1.1rem;
}
.ig-title span { color: var(--ig-text-2); font-weight: 400; }
.ig-lede { font-size: 0.95rem; line-height: 1.65; color: var(--ig-text-2); max-width: 32rem; }

.ig-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.5rem; }
.md-typeset .ig-btn {
  display: inline-block;
  padding: 0.62rem 1.1rem;
  font-family: var(--ig-mono);
  font-size: 0.64rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--ig-line-soft);
  color: var(--md-default-fg-color);
}
.md-typeset .ig-btn:hover { border-color: var(--ig-accent); color: var(--ig-accent); }
.md-typeset .ig-btn--primary { background: var(--ig-line); color: var(--ig-bg); border-color: var(--ig-line); }
.md-typeset .ig-btn--primary:hover { background: var(--ig-accent); border-color: var(--ig-accent); color: var(--ig-bg); }

/* the drawing */
.ig-drawing svg { width: 100%; height: auto; display: block; }
.ig-drawing .l { stroke: var(--ig-line); }
.ig-drawing .s { stroke: var(--ig-line); stroke-opacity: 0.45; }
.ig-drawing .d { stroke: var(--ig-dim); }
.ig-drawing .a { stroke: var(--ig-accent); }
.ig-drawing .t { fill: var(--ig-dim); font-family: var(--ig-mono); font-size: 11px; letter-spacing: 1.2px; }
.ig-drawing .ta { fill: var(--ig-accent); font-family: var(--ig-mono); font-size: 11px; letter-spacing: 1.2px; }
.ig-drawing .seal { stroke-dasharray: 60; stroke-dashoffset: 60; animation: ig-draw 0.7s ease-out 0.5s forwards; }
@keyframes ig-draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .ig-drawing .seal { animation: none; stroke-dashoffset: 0; } }

/* the denial, as console output */
.ig-console {
  margin: 0.4rem 0 0;
  padding: 0.95rem 1.1rem;
  background: #0b1827;
  color: #d8e2ee;
  font-family: var(--ig-mono);
  font-size: 0.62rem;
  line-height: 1.75;
  border: 1px solid var(--ig-line-soft);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.ig-console .p { color: #6c839c; }
.ig-console .r { color: #e59a7a; }

/* spec sheet sections */
.ig-sheet-label {
  display: flex;
  justify-content: space-between;
  margin: 3rem 0 0;
  padding: 0.6rem 0;
  border-top: 1px solid var(--ig-line);
  font-family: var(--ig-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ig-dim);
}
.ig-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ig-line-soft);
  border-left: 1px solid var(--ig-line-soft);
}
@media (max-width: 960px) { .ig-grid { grid-template-columns: 1fr; } }
.ig-cell {
  padding: 1.1rem 1.2rem 1.3rem;
  border-right: 1px solid var(--ig-line-soft);
  border-bottom: 1px solid var(--ig-line-soft);
}
.ig-cell__ref { font-family: var(--ig-mono); font-size: 0.56rem; letter-spacing: 0.18em; color: var(--ig-dim); }
.md-typeset .ig-cell h3 { margin: 0.35rem 0; font-size: 0.92rem; }
.md-typeset .ig-cell p { margin: 0; font-size: 0.72rem; line-height: 1.6; color: var(--ig-text-2); }

.ig-ledger { font-family: var(--ig-mono); font-size: 0.66rem; border-top: 1px solid var(--ig-line-soft); }
.ig-ledger__row {
  display: grid;
  grid-template-columns: 12rem 1fr 4rem;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--ig-line-faint);
}
@media (max-width: 700px) { .ig-ledger__row { grid-template-columns: 1fr; gap: 0.1rem; } }
.ig-ledger__row b { font-weight: 500; }
.ig-ledger__row span:last-child { color: var(--ig-dim); text-align: right; }
.ig-pass { color: var(--ig-pass); }
.ig-deny { color: var(--ig-deny); }
.ig-neutral { color: var(--ig-accent); }