/* Brand guidelines — logo, clear space, construction, colour, type, concept, imagery, usage, downloads.
   The construction and clear-space drawings are inline SVGs generated by tools/build-logos.mjs. */

/* ------------------------------------------------------------------ Hero */

.brand-hero {
  padding-bottom: clamp(3rem, 2rem + 3vw, 5rem);
}

.brand-hero__field {
  position: absolute;
  inset: 0 0 0 45%;
  opacity: 0.5;
  mask-image: radial-gradient(60% 70% at 70% 45%, #000 0%, transparent 75%);
}

.brand-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 3rem var(--gutter);
}

.brand-hero__text {
  grid-column: 1 / span 7;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.brand-hero__text .crumbs {
  margin-bottom: 0;
}

.brand-hero__text .lead {
  max-width: 34em;
}

.brand-hero__meta {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  opacity: 0.75;
}

.brand-hero__mark {
  --frame-size: 22px;
  --frame-color: var(--signal);

  grid-column: 9 / -1;
  align-self: center;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  padding: 18%;
  background: color-mix(in srgb, var(--ink-2) 70%, transparent);
}

.brand-hero__mark img {
  width: 100%;
  height: auto;
}

.brand-index {
  grid-column: 1 / -1;
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
}

.brand-index__label {
  margin-bottom: 0.75rem;
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.brand-index ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  list-style: none;
  padding: 0;
}

.brand-index a {
  display: inline-flex;
  gap: 0.6rem;
  font-size: var(--fs-small);
  color: var(--on-ink-muted);
  transition: color 0.3s;
}

.brand-index a .mono {
  font-size: 0.6875rem;
  color: var(--signal);
  padding-top: 0.15em;
}

.brand-index a:hover {
  color: var(--on-ink);
}

@media (width <= 900px) {
  .brand-hero__text,
  .brand-hero__mark {
    grid-column: 1 / -1;
  }

  .brand-hero__mark {
    max-width: 22rem;
  }
}

/* ------------------------------------------------------------------ 01 Logo stage */

.logo-stage {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

.logo-panel {
  position: relative;
  grid-column: span 6;
  display: flex;
  flex-direction: column;
  min-height: 15rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.logo-panel--wide {
  grid-column: span 6;
  min-height: clamp(18rem, 12rem + 12vw, 26rem);
}

.logo-panel--paper {
  background: var(--paper);
}

.logo-panel--paper-2 {
  background: var(--paper-2);
}

.logo-panel--white {
  background: #fff;
}

.logo-panel--ink,
.logo-panel--ink-2,
.logo-panel--image {
  --muted: var(--on-ink-muted);

  border-color: transparent;
  color: var(--on-ink);
}

.logo-panel--ink {
  background: var(--ink);
}

.logo-panel--ink-2 {
  background: var(--ink-2);
}

.logo-panel--image {
  background: var(--ink);
}

.logo-panel__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
}

.logo-panel__art {
  position: relative;
  flex: 1;
  display: grid;
  place-items: center;
  padding: 2.5rem 1.5rem 1rem;
}

.logo-panel__img--h {
  width: min(70%, 24rem);
  height: auto;
}

.logo-panel--wide .logo-panel__img--h {
  width: min(72%, 30rem);
}

.logo-panel__img--s {
  width: min(60%, 13rem);
  height: auto;
}

.logo-panel__img--m {
  width: 6rem;
  height: auto;
}

.logo-panel__cap {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.logo-panel__cap a {
  margin-left: 0.75rem;
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 0.25em;
  text-decoration-color: color-mix(in srgb, currentcolor 35%, transparent);
  transition: color 0.3s;
}

.logo-panel__cap a:hover {
  color: var(--signal-text);
}

.logo-panel--ink .logo-panel__cap a:hover,
.logo-panel--ink-2 .logo-panel__cap a:hover,
.logo-panel--image .logo-panel__cap a:hover {
  color: var(--signal-soft);
}

@media (width <= 640px) {
  .logo-panel {
    grid-column: 1 / -1;
  }
}

/* ------------------------------------------------------------------ Diagrams (shared) */

.dg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.dg-grid {
  fill: none;
  stroke: currentcolor;
  stroke-width: 0.6;
  opacity: 0.14;
}

.dg-grid--major {
  opacity: 0.32;
}

.dg-fg {
  fill: currentcolor;
}

.dg-signal {
  fill: var(--signal);
}

.dg-axis {
  fill: none;
  stroke: var(--signal);
  stroke-width: 1;
  stroke-dasharray: 4 4;
  opacity: 0.8;
}

.dg-guide {
  fill: none;
  stroke: var(--signal-soft);
  stroke-width: 0.8;
  stroke-dasharray: 2 3;
  opacity: 0.8;
}

.dg-dim,
.dg-leader {
  fill: none;
  stroke: currentcolor;
  stroke-width: 1;
  opacity: 0.6;
}

.dg-pin {
  fill: var(--signal);
}

.dg-label {
  fill: currentcolor;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.dg-zone {
  fill: color-mix(in srgb, var(--signal) 5%, transparent);
  stroke: var(--signal);
  stroke-width: 1;
  stroke-dasharray: 5 5;
}

.dg-bounds {
  fill: none;
  stroke: currentcolor;
  stroke-width: 0.75;
  opacity: 0.25;
}

.dg-x {
  fill: color-mix(in srgb, var(--signal) 14%, transparent);
  stroke: var(--signal);
  stroke-width: 0.75;
}

.dg--clearspace .dg-label {
  font-size: 15px;
}

.dg-label--x {
  fill: var(--signal-text);
  font-family: var(--font-display);
  font-size: 20px !important;
  font-style: italic;
  letter-spacing: 0;
  text-transform: none;
}

/* ------------------------------------------------------------------ 02 Clear space */

.clear-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 3rem var(--gutter);
  align-items: start;
}

.clear-grid__diagram {
  grid-column: 1 / span 7;
  padding: clamp(1.5rem, 1rem + 2vw, 3rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
}

.clear-grid__diagram .media__caption {
  margin-top: 1.5rem;
}

.clear-grid__sizes {
  grid-column: 9 / -1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.min-sizes {
  border-top: 1px solid var(--line);
}

.min-sizes__row {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.min-sizes__row dd {
  font-size: var(--fs-small);
}

.min-sizes__row .mono {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

@media (width <= 900px) {
  .clear-grid__diagram,
  .clear-grid__sizes {
    grid-column: 1 / -1;
  }
}

/* ------------------------------------------------------------------ 03 Construction */

.construct {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 3rem var(--gutter);
  align-items: center;
}

.construct__diagram {
  grid-column: 1 / span 7;
  color: var(--on-ink);
}

.construct__side {
  grid-column: 9 / -1;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.spec {
  border-top: 1px solid var(--line);
}

.spec > div {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-small);
}

.spec dt {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.2em;
}

.optical {
  display: flex;
  align-items: flex-end;
  gap: 1.75rem;
}

.optical figure {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.optical figcaption {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

@media (width <= 900px) {
  .construct__diagram,
  .construct__side {
    grid-column: 1 / -1;
  }
}

@media (width <= 480px) {
  .optical {
    gap: 1rem;
  }

  .optical figure:first-child img {
    width: 96px;
    height: 96px;
  }
}

/* ------------------------------------------------------------------ 04 Colour */

.swatches {
  display: grid;
  gap: var(--gutter);
}

.swatches--primary {
  grid-template-columns: 2fr 2fr 1.4fr;
}

.swatches--secondary {
  margin-top: var(--gutter);
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.swatch {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.35rem;
  min-height: 15rem;
  padding: 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--sw);
  color: var(--sw-fg, var(--on-ink));
}

.swatch--sm {
  min-height: 9.5rem;
  padding: 1.1rem 1.25rem;
}

.swatch__name {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.swatch--sm .swatch__name {
  font-size: 1.25rem;
}

.swatch__hex {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.swatch__role {
  max-width: 28ch;
  font-size: var(--fs-small);
  line-height: 1.45;
  opacity: var(--sw-role-opacity, 0.8);
}

.swatch--sm .swatch__role {
  font-size: var(--fs-xs);
}

.swatch--ink { --sw: var(--ink); }

.swatch--paper {
  --sw: var(--paper);
  --sw-fg: var(--text);

  border-color: var(--line);
}

.swatch--signal {
  --sw: var(--signal);
  --sw-fg: var(--ink);
  --sw-role-opacity: 1;
}

.swatch--ink-2 { --sw: var(--ink-2); }

.swatch--teal { --sw: var(--teal); }

.swatch--teal-soft {
  --sw: var(--teal-soft);
  --sw-fg: color-mix(in srgb, var(--ink) 70%, black); /* ink alone is 4.3:1 on teal-soft */
  --sw-role-opacity: 1;
}

.swatch--paper-2 {
  --sw: var(--paper-2);
  --sw-fg: var(--text);
}

.swatch--line {
  --sw: var(--line);
  --sw-fg: var(--text);
}

.swatch--text { --sw: var(--text); }

.swatch--signal-soft {
  --sw: var(--signal-soft);
  --sw-fg: var(--ink);
}

.swatch--sage {
  --sw: var(--sage);
  --sw-fg: var(--ink);
  --sw-role-opacity: 1;
}

.proportion {
  margin-top: clamp(2.5rem, 2rem + 2vw, 4rem);
}

.proportion__bar {
  display: flex;
  height: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.proportion__seg--paper {
  flex: 55;
  background: var(--paper);
}

.proportion__seg--ink {
  flex: 30;
  background: var(--ink);
}

.proportion__seg--teal {
  flex: 8;
  background: var(--teal);
}

.proportion__seg--line {
  flex: 5;
  background: var(--line);
}

.proportion__seg--signal {
  flex: 2;
  background: var(--signal);
}

@media (width <= 900px) {
  .swatches--primary {
    grid-template-columns: 1fr 1fr;
  }

  .swatches--primary .swatch--signal {
    grid-column: 1 / -1;
    min-height: 10rem;
  }

  .swatches--secondary {
    grid-template-columns: 1fr 1fr;
  }
}

@media (width <= 480px) {
  .swatches--primary {
    grid-template-columns: 1fr;
  }

  .swatch {
    min-height: 10rem;
  }
}

/* ------------------------------------------------------------------ 05 Typography */

.specimens {
  border-top: 1px solid var(--line-strong);
}

.specimen {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.5rem var(--gutter);
  padding: clamp(2rem, 1.5rem + 2vw, 3.5rem) 0;
  border-bottom: 1px solid var(--line-strong);
}

.specimen__meta {
  grid-column: 1 / span 3;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.specimen__name {
  font-size: var(--fs-eyebrow);
  font-weight: 450;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal-text);
}

.specimen__display,
.specimen__body,
.specimen__mono {
  grid-column: 5 / -1;
}

.specimen__display {
  font-family: var(--font-display);
  font-size: var(--fs-display-l);
  line-height: 1;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.specimen__display em {
  font-weight: 380;
}

.specimen__body {
  max-width: 38em;
  font-size: 1.125rem;
  line-height: 1.6;
}

.specimen__mono {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.specimen__figures {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

@media (width <= 900px) {
  .specimen__meta,
  .specimen__display,
  .specimen__body,
  .specimen__mono {
    grid-column: 1 / -1;
  }
}

/* ------------------------------------------------------------------ 06 Concept */

.devices {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gutter);
  list-style: none;
  padding: 0;
}

.device {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-strong);
}

.device__art {
  width: 100%;
  max-width: 13rem;
  height: auto;
  margin-bottom: 1rem;
  color: var(--text);
}

.device__line {
  fill: none;
  stroke: currentcolor;
  stroke-width: 2.5;
}

.device__hair {
  stroke: currentcolor;
  stroke-width: 1;
  opacity: 0.5;
}

.device__dot {
  fill: currentcolor;
}

.device__signal {
  fill: var(--signal);
}

.device__ring {
  fill: color-mix(in srgb, var(--signal) 18%, transparent);
}

.device__contour {
  fill: none;
  stroke: var(--teal-soft);
  stroke-width: 1;
}

@media (width <= 1024px) {
  .devices {
    grid-template-columns: 1fr 1fr;
    row-gap: 3rem;
  }
}

@media (width <= 480px) {
  .devices {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------------------------------------------ 07 Imagery */

.imagery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.5rem var(--gutter);
}

@media (width <= 900px) {
  .imagery {
    grid-template-columns: 1fr 1fr;
  }
}

@media (width <= 480px) {
  .imagery {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------------------------------------------ 08 Usage */

.usage {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.5rem var(--gutter);
  list-style: none;
  padding: 0;
}

.usage__art {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.usage__art img:not(.usage__bg) {
  position: relative;
  width: 58%;
  height: auto;
}

.usage__art--paper {
  background: var(--paper-2);
}

.usage__art--ink {
  background: var(--ink);
  border-color: transparent;
}

.usage__art--teal {
  background: var(--teal);
  border-color: transparent;
}

.usage__art--photo {
  background: var(--ink);
  border-color: transparent;
}

.usage__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.usage__item--do .usage__art--photo .usage__bg {
  object-position: right center;
}

.imagery .imagery__tall {
  object-position: center 40%;
}

.usage__stretch {
  transform: scale(1.35, 0.8) rotate(-4deg);
}

.usage__shadow {
  filter: drop-shadow(3px 5px 3px rgb(10 37 48 / 45%));
}

.usage__retype {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.8rem + 0.8vw, 1.4rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--teal);
}

.usage__art .usage__retype img {
  width: 2.25rem;
}

.usage__verdict {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-top: 1rem;
  font-size: var(--fs-small);
  color: var(--muted);
}

.usage__verdict strong {
  color: var(--text);
  font-weight: 560;
}

.usage__flag {
  position: relative;
  flex: none;
  top: 0.1em;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: var(--teal);
}

.usage__flag::before {
  content: "";
  position: absolute;
  inset: 0.24rem 0.2rem 0.3rem;
  border: solid var(--paper);
  border-width: 0 0 1.5px 1.5px;
  transform: rotate(-45deg);
}

.usage__item--dont .usage__flag {
  background: var(--signal);
}

.usage__item--dont .usage__flag::before {
  inset: 0.4rem 0.2rem;
  border-width: 1.5px 0 0;
  transform: rotate(45deg);
}

.usage__item--dont .usage__flag::after {
  content: "";
  position: absolute;
  inset: 0.4rem 0.2rem;
  border-top: 1.5px solid var(--paper);
  transform: rotate(-45deg);
}

.usage__item--dont .usage__art::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  background: var(--signal);
}

.usage__item--do .usage__art::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  background: var(--teal);
}

@media (width <= 1024px) {
  .usage {
    grid-template-columns: 1fr 1fr;
  }
}

@media (width <= 560px) {
  .usage {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------------------------------------------ 09 Downloads */

.downloads__kit {
  margin-top: 1.5rem;
}

.downloads {
  overflow-x: auto;
  border-top: 1px solid var(--line-strong);
}

.downloads__table {
  width: 100%;
  min-width: 44rem;
  border-collapse: collapse;
  font-size: var(--fs-small);
}

.downloads__table th,
.downloads__table td {
  padding: 1rem 1rem 1rem 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.downloads__table thead th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 450;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.downloads__table tbody th {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
}

.downloads__table td a {
  display: inline-block;
  margin: 0.15rem 0.5rem 0.15rem 0;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  transition:
    background-color 0.3s,
    color 0.3s,
    border-color 0.3s;
}

.downloads__table td a:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--on-ink);
}

.downloads__note {
  margin-top: 2rem;
}

@media (width <= 400px) {
  .downloads__kit {
    max-width: 100%;
    white-space: normal;
  }
}