/* Next Tuesday Society, v1.
   The look lives in the custom properties below: swap colours and fonts here
   to re-skin every page. The accents come from the portal teaser: ultramarine,
   fire red, lavender, gold. Text colours (--ink, --heading, --muted, --link,
   --fire-text) are at least 4.5:1 on --paper, --card and --tint (WCAG AA).
   --fire, --gold and --lav fall below that, so they only draw shapes:
   shadows, borders, the mark, never text. */
:root {
  --paper: #f5f1ea;
  --card: #fffdf8;
  --tint: #ebe7fb;
  --ink: #1c1838;
  --heading: #1d1570;
  --muted: #5b5670;
  --link: #3326d4;
  --fire-text: #c0142f;
  --rule: #d8d0c3;

  --blue: #3326d4;
  --fire: #e51d47;
  --lav: #b9b0f2;
  --gold: #ffb21a;

  --font-text: "EB Garamond", Garamond, "Times New Roman", serif;
  --font-display: "Syne", "Helvetica Neue", Arial, sans-serif;
  --font-label: "Space Mono", ui-monospace, Menlo, Consolas, monospace;
  --font-emoji: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;

  --size-text: 1.1875rem;
  --size-lede: 1.5rem;
  --size-title: clamp(2.25rem, 10vw, 3.5rem);
  --size-label: 0.75rem;

  --edge: 2px solid var(--heading);
  --shadow: 6px 6px 0;

  --measure: 34rem;
  --gutter: 16px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: var(--size-text);
  line-height: 1.6;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
  overflow-x: hidden;
}

/* A band of portal stripes along the top edge. */
body::before {
  content: "";
  display: block;
  height: 8px;
  background: repeating-linear-gradient(115deg, var(--blue) 0 7px, var(--lav) 7px 14px);
}

/* A faint riso grain over everything; it never takes clicks. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  opacity: 0.06;
  mix-blend-mode: multiply;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .1 0 0 0 0 .05 0 0 0 0 .4 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.page {
  max-width: calc(var(--measure) + 2 * var(--gutter));
  margin: 0 auto;
  padding: 2rem var(--gutter) 3rem;
  min-height: calc(100vh - 8px);
  min-height: calc(100svh - 8px);
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Header: the mark, and the way home on inner pages. */
.masthead {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 3.5rem;
}

.mark {
  width: 40px;
  height: 40px;
  flex: none;
  overflow: visible;
}

.mark .knot {
  fill: none;
  stroke: var(--blue);
  stroke-width: 1.8;
  transform-box: view-box;
  transform-origin: 16px 16.5px;
  animation: turn 90s linear infinite;
}

.mark .tet {
  fill: var(--fire);
}

@keyframes turn {
  to {
    transform: rotate(360deg);
  }
}

.masthead a {
  color: var(--heading);
  text-decoration: none;
  font-family: var(--font-label);
  font-size: var(--size-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.masthead a:hover,
.masthead a:focus-visible {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

/* Type. */
.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--fire-text);
  font-family: var(--font-label);
  font-size: var(--size-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 1.25rem;
  color: var(--heading);
  font-family: var(--font-display);
  font-size: var(--size-title);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-shadow: 3px 3px 0 var(--lav);
}

/* Syne 800 is wide: a one-word caps title must fit a 288px phone column
   without breaking mid-word. */
h1.caps {
  font-size: clamp(1.75rem, 8.4vw, 3rem);
  letter-spacing: 0.01em;
}

h2 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 3.5rem 0 1rem;
  color: var(--heading);
  font-family: var(--font-label);
  font-size: var(--size-label);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* A small fire-red diamond before each section label. */
h2::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  flex: none;
  background: var(--fire);
  transform: rotate(45deg);
}

p {
  margin: 0 0 1.1rem;
}

.lede {
  margin-bottom: 2.25rem;
  font-size: var(--size-lede);
  font-style: italic;
  line-height: 1.35;
}

a {
  color: var(--link);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 2px dashed var(--fire);
  outline-offset: 3px;
  border-radius: 2px;
}

/* The initiatives on the home page: hard-edged cards, each wholly a link. */
.initiatives {
  display: grid;
  gap: 1.25rem;
  margin: 0;
  padding: 0 6px 6px 0;
  list-style: none;
}

.initiatives li {
  position: relative;
  padding: 1.1rem 1.2rem 1.2rem;
  background: var(--card);
  border: var(--edge);
  box-shadow: var(--shadow) var(--blue);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.initiatives li:nth-child(2n + 1) {
  box-shadow: var(--shadow) var(--fire);
}

.initiatives a {
  color: var(--heading);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1.1;
  text-decoration: none;
}

.initiatives a::after {
  content: "";
  position: absolute;
  inset: 0;
}

.initiatives a:focus-visible {
  outline: none;
}

.initiatives li:focus-within {
  outline: 2px dashed var(--fire);
  outline-offset: 5px;
}

.initiatives li:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--blue);
}

.initiatives li:nth-child(2n + 1):hover {
  box-shadow: 8px 8px 0 var(--fire);
}

.initiatives li:hover a {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.15em;
}

.initiatives p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.quiet {
  color: var(--muted);
}

/* A block that asks for a reply: contact on the home page, venues on EMBERS. */
.panel {
  margin: 3.5rem 6px 0 0;
  padding: 1.2rem 1.2rem 0.3rem;
  background: var(--tint);
  border: var(--edge);
  box-shadow: var(--shadow) var(--heading);
}

.panel h2 {
  margin-top: 0;
}

/* A link that stands alone as the page's way onward. */
.pill,
.colophon a {
  display: inline-block;
  padding: 0.5rem 0.95rem;
  border-radius: 99px;
  background: var(--heading);
  color: var(--paper);
  font-family: var(--font-label);
  font-size: 0.8125rem;
  line-height: 1.3;
  text-decoration: none;
}

.pill:hover,
.pill:focus-visible,
.colophon a:hover,
.colophon a:focus-visible {
  background: var(--gold);
  color: var(--heading);
}

/* Footer: contact, then the signature, always last. */
.colophon {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 4.5rem;
  padding-top: 1.5rem;
  border-top: var(--edge);
  font-size: 1.0625rem;
}

.colophon p {
  margin: 0;
}

.colophon .signature {
  flex-basis: 100%;
  margin-top: 1.25rem;
  color: var(--muted);
  font-style: italic;
}

.emoji {
  font-family: var(--font-emoji);
  font-style: normal;
}

@media (min-width: 40rem) {
  .page {
    padding-top: 4rem;
  }

  .masthead {
    margin-bottom: 5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mark .knot {
    animation: none;
  }

  .initiatives li {
    transition: none;
  }

  .initiatives li:hover {
    transform: none;
  }
}