/* ---------------------------------------------------------------------------
 * hub.css — the marketing site only.
 *
 * Everything reusable lives in the design system: /ds/styles.css supplies the
 * tokens, the base layer and the .us-* component classes. This file is only the
 * page compositions those classes do not cover — the header, the tool grid, the
 * prose pages and the footer — plus the specimen sheet's layout.
 *
 * It is per-theme for exactly the reason this port demonstrates: a brutalist
 * hero and a colour-block one are different compositions, not the same one
 * restyled. RawBlock's landing page was six bordered cards in a plain grid
 * because that system had no other move. CreateSpace's spec asks for
 * asymmetric, grid-heavy layouts with colour blocks, so the grid here is
 * deliberately uneven and the header carries a colour field behind it.
 *
 * The rules this file obeys: no gradients — colour arrives as flat blocks;
 * yellow is a fill and never type; the tool accents stay out of the furniture.
 * ------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-default);
  background: var(--accent-primary);
  color: var(--ink-on-accent);
  text-decoration: none;
  box-shadow: var(--shadow-lg);
}

.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

/* --- wordmark -------------------------------------------------------------
 * A rose square with the name stacked over three lines and a six-arm asterisk
 * in the corner. RawBlock's mark was a horizontal black rectangle that
 * inverted on the plate; this one keeps its rose everywhere, because here the
 * colour is the brand and a wordmark that changes hue by context is two
 * wordmarks.
 *
 * Every value below is a fraction of --wm-size, so the whole lockup scales
 * from one number and the two placements differ by that number alone. The
 * fractions are the mark's proportions and are not tokens: they describe this
 * drawing, not the system.
 *
 * Only the mono variant ships. The accent version — blue u, yellow l, green
 * dot — is 1.10:1 and 1.07:1 for the blue and the green against the rose
 * ground, so two of its three letters disappear. It is a nice idea on a
 * lighter ground and it is not one this mark can carry.
 * ------------------------------------------------------------------------- */

.us-wordmark {
  /* The header size, and the default everywhere else. The header grows to
     match it rather than the mark being squeezed to fit the header — this
     system leads with the brand, so the mark sets the height and the nav
     centres against it. */
  --wm-size: 144px;

  --wm-corner: 0.176;   /* radius, as a fraction of --wm-size */
  --wm-type: 0.235;     /* font-size */
  --wm-inset-x: 0.075;  /* left margin */
  --wm-inset-b: 0.1;    /* how far up the baseline sits */
  --wm-lead: 0.88;      /* rows one and two */
  --wm-lead-space: 0.67; /* ".space" tucks in tighter */

  --wm-star: 0.235;     /* diameter */
  --wm-star-t: 0.082;   /* from the top */
  --wm-star-r: 0.06;    /* from the right */
  --wm-star-arm: 0.34;  /* arm width at the tip, as a fraction of --wm-star */
  --wm-star-waist: 0.12; /* arm width at the centre */

  position: relative;
  box-sizing: border-box;
  width: var(--wm-size);
  height: var(--wm-size);
  border-radius: calc(var(--wm-size) * var(--wm-corner));
  /* --brand-mark, not --accent-primary: the accent lifts to #fb7185 on a dark
     page and would take white type down to 2.1:1. See tokens/colors.css. */
  background: var(--brand-mark);
  padding: 0 0 calc(var(--wm-size) * var(--wm-inset-b))
    calc(var(--wm-size) * var(--wm-inset-x));

  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  overflow: hidden;

  font-family: var(--font-display);
  font-weight: var(--weight-extrabold);
  font-size: calc(var(--wm-size) * var(--wm-type));
  line-height: var(--wm-lead);
  letter-spacing: -0.05em;
  color: var(--ink-on-brand-mark);
  -webkit-font-smoothing: antialiased;
  user-select: none;

  transition: transform var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.us-wordmark-row {
  display: block;
  white-space: nowrap;
}

.us-wordmark-row--full { line-height: var(--wm-lead); }
.us-wordmark-row--space { line-height: var(--wm-lead-space); }

/* Three bars at 0 / 60 / 120 make six arms. Each is clipped to a hexagon —
   wide at both tips, pinched at the waist — so the arms taper into the centre
   the way a drawn asterisk does rather than crossing as flat slabs. */
.us-wordmark-star {
  position: absolute;
  top: calc(var(--wm-size) * var(--wm-star-t));
  right: calc(var(--wm-size) * var(--wm-star-r));
  width: calc(var(--wm-size) * var(--wm-star));
  aspect-ratio: 1;
}

.us-wordmark-star i {
  position: absolute;
  inset: 0;
  background: var(--ink-on-brand-mark);
  clip-path: polygon(
    calc(50% - var(--wm-star-arm) * 50%) 0%,
    calc(50% + var(--wm-star-arm) * 50%) 0%,
    calc(50% + var(--wm-star-waist) * 50%) 50%,
    calc(50% + var(--wm-star-arm) * 50%) 100%,
    calc(50% - var(--wm-star-arm) * 50%) 100%,
    calc(50% - var(--wm-star-waist) * 50%) 50%
  );
}

.us-wordmark-star i:nth-child(2) { transform: rotate(60deg); }
.us-wordmark-star i:nth-child(3) { transform: rotate(120deg); }

.site-brand {
  text-decoration: none;
  display: inline-flex;
}

/* The ground is fixed, so hover is the lift the rest of the system uses
   rather than a colour change. */
.site-brand:hover .us-wordmark {
  transform: translateY(var(--lift));
  box-shadow: var(--shadow-color);
}

/* There is no .site-footer-mark rule any more: the footer does not carry the
   mark. The class is still accepted by wordmark() if anything wants a second
   placement later — it just has no size override of its own to inherit.

   144px is most of a phone header. The mark stays legible down to about 48px —
   below that the three rows start closing up — so there is room to come down. */
@media (max-width: 767px) {
  .us-wordmark { --wm-size: 88px; }
}

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

.site-header {
  border-bottom: var(--border-thin) solid var(--line-1);
  background: var(--surface-page);
}

/* The mark sets the height: the square plus a band of air top and bottom.
   Stated in terms of the mark rather than as a magic number, so resizing one
   resizes the other and the nav never sits against the edge. At this size the
   air is --space-2 rather than --space-3: a 144px block does not need 12px of
   padding to feel unconstrained, and every pixel here pushes the grid down. */
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: calc(144px + var(--space-2) * 2);
}

@media (max-width: 767px) {
  .site-header-inner {
    min-height: calc(88px + var(--space-2) * 2);
  }
}

/* The nav sits on the header's own rule rather than floating in the middle of
   the band. align-self drops it to the bottom of the flex line; the negative
   margin pulls it down over the 1px border so each item's underline lands
   exactly on it, the way a tab strip does. The brand stays centred. */
.site-nav {
  display: flex;
  gap: var(--space-1);
  align-self: flex-end;
  margin-bottom: calc(var(--border-thin) * -1);
}

/* Chrome, not running text, so it is not the link blue and carries no
   underline of its own — the bottom border is the underline, and it is only
   ever coloured for the page you are on. */
.site-nav a {
  padding: 10px 14px;
  border-bottom: var(--border-thick) solid transparent;
  border-radius: 0;
  font: var(--weight-medium) var(--text-body-sm) / 1.2 var(--font-sans);
  letter-spacing: 0;
  color: var(--ink-2);
  text-decoration: none;
  transition: var(--transition-default);
}

.site-nav a:hover {
  color: var(--ink-1);
  border-bottom-color: var(--line-2);
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

/* The coffee link is the one nav item that is an offer rather than a
   destination, so it gets the accent and a little space away from the two
   that are. It stays a link, not a button: it goes to a page.

   Written as `.site-nav a.site-nav-coffee` rather than `.site-nav-coffee`,
   because the plain class is (0,1,0) and loses to `.site-nav a` at (0,1,1) —
   which silently rendered it the same grey as the other two. */
.site-nav a.site-nav-coffee {
  margin-left: var(--space-4);
  color: var(--accent-primary);
}

.site-nav a.site-nav-coffee:hover {
  color: var(--accent-primary-hover);
  border-bottom-color: var(--accent-primary);
}

/* --- tool grid -----------------------------------------------------------
 * Six equal cards, three to a row.
 *
 * The spec's own word is "asymmetric", and this deliberately is not — see the
 * note in DESIGN.md. Six tools are six peers: none is a lead piece, and a
 * layout that gives one of them four columns and another two is making an
 * editorial claim about the catalogue that is not true. Equal cards also mean
 * every screenshot is reproduced at the same scale, which is the thing a
 * visitor is actually comparing.
 *
 * No span rules, so the grid does not care how many tools there are — a
 * seventh fills the next cell and nothing needs editing.
 * ------------------------------------------------------------------------- */

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
  /* Stretch, so cards in a row end level. The plate is a fixed ratio and the
     body takes the slack, which puts a little air under a one-line
     description — that is the cost of a level bottom edge and it is the right
     trade on an even grid. */
  align-items: stretch;
}

/* Three up, once there is room for three at a sensible width. Below this the
   auto-fill rule above drops to two and then one on its own. */
@media (min-width: 1000px) {
  .tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* The landing page opens straight on the grid — there is no hero above it, so
   a full --space-9 of section padding reads as a rendering fault rather than
   as air. Every other .us-section on the site sits under a coloured plate that
   gives the gap something to be. */
#tools.us-section {
  padding-block-start: var(--space-7);
}

/* --- prose pages (about, privacy, legal) ---------------------------------- */

.prose {
  max-width: var(--measure);
}

/* Every prose page opens on its first heading now that the page-head plates
   have come off all three. The section already contributes 96px of padding,
   and the first heading's own 64px on top of that opens the page on a void. */
.prose--opens-page > :first-child {
  margin-top: 0;
}

/* A rose rule above each h2 rather than RawBlock's heavy black one. Short,
   because it is marking a section rather than dividing the page. */
.prose h2 {
  margin: var(--space-8) 0 var(--space-4);
  padding-top: var(--space-4);
  border-top: var(--border-heavy) solid var(--accent-primary);
  font-family: var(--font-display);
  font-size: var(--text-display-3);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
}

.prose h3 {
  margin: var(--space-6) 0 var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-title-1);
  font-weight: var(--weight-semibold);
}

.prose p,
.prose dd {
  color: var(--ink-2);
  margin-bottom: var(--space-4);
}

/* Rows with a hairline between them, and a rose marker where RawBlock had
   nothing — this system is allowed decorative marks, and a list of privacy
   guarantees is a place a reader benefits from one. */
.prose ul {
  margin: 0 0 var(--space-4);
  padding-left: 0;
  list-style: none;
}

.prose li {
  position: relative;
  padding: var(--space-3) 0 var(--space-3) var(--space-5);
  border-bottom: var(--border-thin) solid var(--line-1);
  color: var(--ink-2);
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--space-3) + 0.6em);
  width: 8px;
  height: 8px;
  border-radius: var(--radius-sm);
  background: var(--accent-primary);
}

.prose dt {
  font-weight: var(--weight-semibold);
  color: var(--ink-1);
  margin-top: var(--space-4);
}

.prose dd {
  margin: var(--space-1) 0 var(--space-4);
}

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

.site-footer {
  padding-block: var(--space-8) var(--space-6);
}

/* flex-start, not space-between. The footer held a brand block on the left and
   the link columns on the right, and space-between is what kept them apart.
   With the brand gone there is one child, and space-between would leave it
   pinned wherever the flex algorithm put it rather than at the margin. */
.site-footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: var(--space-7);
}

.site-footer-cols {
  display: flex;
  gap: var(--space-7);
  flex-wrap: wrap;
}

.site-footer-head {
  color: var(--ink-on-brand);
  margin-bottom: var(--space-3);
}

.site-footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer-list a {
  font-size: var(--text-body-sm);
}

@media (max-width: 767px) {
  .site-footer-inner {
    gap: var(--space-6);
  }
}

/* --- the specimen sheet ---------------------------------------------------
 * /_design and /_design-dark. Scaffolding for looking at the system, not part
 * of it: nothing below styles a component, it only arranges them on a page and
 * labels them.
 *
 * Laid out with air rather than with rules, which is the whole difference from
 * RawBlock's specimen: a system with cards and shadows needs room around each
 * sample for the shadow to fall into, where that one needed hard divisions.
 * ------------------------------------------------------------------------- */

.spec-head {
  padding-block: var(--space-8);
}

.spec-head h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: var(--weight-extrabold);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  color: var(--ink-on-brand);
}

.spec-head p {
  max-width: 60ch;
  margin-top: var(--space-4);
  color: var(--ink-on-brand-2);
}

.spec-section {
  padding-block: var(--space-7);
  border-top: var(--border-thin) solid var(--line-1);
}

.spec-section:first-of-type {
  border-top: none;
}

.spec-note {
  max-width: var(--measure);
  margin-top: var(--space-2);
  color: var(--ink-3);
  font-size: var(--text-body-sm);
}

/* A row of labelled samples. Wraps rather than scrolls: a specimen that needs
   scrolling to be read cannot be compared in a screenshot. */
.spec-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-top: var(--space-5);
  align-items: flex-start;
}

.spec-cell {
  min-width: 150px;
}

.spec-cell-demo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 60px;
}

.spec-cell-label {
  margin-top: var(--space-2);
  font-size: var(--text-micro);
  color: var(--ink-2);
}

.spec-cell-mono {
  font: var(--weight-regular) var(--text-nano) / 1.5 var(--font-mono);
  color: var(--ink-3);
}

.spec-wide {
  margin-top: var(--space-5);
  max-width: 560px;
}

.spec-on-plate {
  display: inline-block;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
}

/* --- token displays -------------------------------------------------------- */

.spec-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.spec-swatch {
  width: 128px;
}

.spec-swatch-chip {
  height: 64px;
  border: var(--border-thin) solid var(--line-1);
  border-radius: var(--radius-default);
  margin-bottom: var(--space-2);
}

.spec-type {
  margin-top: var(--space-5);
}

.spec-type-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-5);
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--line-1);
}

.spec-type-row .spec-cell-mono {
  flex: 0 0 120px;
}

.spec-type-sample {
  min-width: 0;
  overflow: hidden;
  color: var(--ink-1);
}

.spec-space {
  margin-top: var(--space-5);
}

.spec-space-row,
.spec-border-row {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-2) 0;
}

.spec-space-row .spec-cell-mono,
.spec-border-row .spec-cell-mono {
  flex: 0 0 140px;
}

.spec-space-bar {
  height: 16px;
  border-radius: var(--radius-sm);
  background: var(--accent-primary);
}

.spec-border-bar {
  width: 240px;
}

.spec-toolcard {
  max-width: 340px;
  margin-top: var(--space-5);
}

/* The tooltip is held open so it appears in a screenshot; hovering is how you
   see it on a real page. */
.spec-tooltip-open .us-tooltip-label {
  opacity: 1;
}

/* The dialog renders in place rather than over the page, for the same reason. */
.spec-dialog-inline .us-dialog {
  max-width: 520px;
}