/* ==========================================================================
   nadavhames.com — shared styles
   ========================================================================== */

/* Dark is the default palette. Light applies when the OS asks for it (unless
   the visitor has explicitly chosen dark) or when it is chosen outright.
   Every theme-dependent value is a token here, so no rule further down this
   file needs a theme selector of its own. */

:root {
  /* A soft dark slate rather than near-black. If you change this, update the
     dark theme-color meta tag in build.tsx to match. */
  --bg: #181b21;
  --surface: #21252c;
  --line: #343a45;
  --line-soft: #272c34;
  --text: #e7e9ee;
  /* Paragraphs: a step below headings, so long text is easy on the eyes without going grey. */
  --body: #b9bfc9;
  --muted: #9aa3b1;
  --faint: #8a92a0;
  --accent: #e8b96a;
  --on-accent: #12141a;
  --danger: #ec8f7f;
  --scheme: dark; /* native controls such as <select> menus */
  /* Light text on dark reads heavier than dark on light; thinner rendering evens it out. */
  --smoothing: antialiased;
  --moz-smoothing: grayscale;
  --echo-1: #e8b96a;
  --echo-2: #e98b74;
  --echo-3: #94c9a0;
  --echo-4: #86b6e6;
  --echo-5: #b9a0ea;
  /* Idle wedges sink toward the surface; lit ones rise toward white. */
  --echo-idle: 38%;
  --echo-idle-base: var(--surface);
  --echo-hover: 52%;
  --echo-lit: 88%;
  --echo-glow: 9px;
  --selection: rgba(232, 185, 106, 0.25);
  --shadow-pop: 0 16px 44px -20px rgba(0, 0, 0, 0.8), 0 2px 6px rgba(0, 0, 0, 0.35);

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --measure: 34rem; /* the text column */
  --label: 6.5rem; /* the hanging label column */
  --gutter: 2rem;
  /* Sits outside the columns above, so widening it never squeezes the text. */
  --pad: clamp(1.25rem, 5vw, 3rem);
  /* Total width of the page column; the glyph strip fills what is left beside it. */
  --column: calc(var(--label) + var(--gutter) + var(--measure) + var(--pad) * 2);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #fbf9f6;
    --surface: #ffffff;
    --line: #ded8cd;
    --line-soft: #eae5dc;
    --text: #1b1d21;
    --body: #464a52;
    --muted: #575e69;
    --faint: #5f6672;
    --accent: #936616;
    --on-accent: #ffffff;
    --danger: #a63a29;
    --scheme: light;
    --smoothing: auto;
    --moz-smoothing: auto;
    --echo-1: #e39c24;
    --echo-2: #eb6b4e;
    --echo-3: #3fab6b;
    --echo-4: #3f8ce3;
    --echo-5: #8f68e0;
    /* Vivid hues shown as they are; a lit wedge flashes pale, with a wider glow to carry it. */
    --echo-idle: 100%;
    --echo-idle-base: var(--surface);
    --echo-hover: 86%;
    --echo-lit: 28%;
    --echo-glow: 13px;
    --selection: rgba(154, 107, 23, 0.18);
    --shadow-pop: 0 16px 44px -22px rgba(60, 48, 24, 0.42), 0 2px 6px rgba(60, 48, 24, 0.1);
  }
}

:root[data-theme="light"] {
  --scheme: light;
  --smoothing: auto;
  --moz-smoothing: auto;
  --bg: #fbf9f6;
  --surface: #ffffff;
  --line: #ded8cd;
  --line-soft: #eae5dc;
  --text: #1b1d21;
  --body: #464a52;
  --muted: #575e69;
  --faint: #5f6672;
  --accent: #936616;
  --on-accent: #ffffff;
  --danger: #a63a29;
  --echo-1: #e39c24;
  --echo-2: #eb6b4e;
  --echo-3: #3fab6b;
  --echo-4: #3f8ce3;
  --echo-5: #8f68e0;
  /* Vivid hues shown as they are; a lit wedge flashes pale, with a wider glow to carry it. */
  --echo-idle: 100%;
  --echo-idle-base: var(--surface);
  --echo-hover: 86%;
  --echo-lit: 28%;
  --echo-glow: 13px;
  --selection: rgba(154, 107, 23, 0.18);
  --shadow-pop: 0 16px 44px -22px rgba(60, 48, 24, 0.42), 0 2px 6px rgba(60, 48, 24, 0.1);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column; /* keeps the footer at the bottom on short pages */
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: var(--smoothing);
  -moz-osx-font-smoothing: var(--moz-smoothing);
  font-optical-sizing: auto;
}

main {
  flex: 1 0 auto;
  position: relative;
  z-index: 1;
}

::selection {
  background: var(--selection);
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 2px;
}
a:hover {
  text-decoration: underline;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 400;
  line-height: 1.2;
  text-wrap: balance;
}
p {
  margin: 0;
}

/* Running text: taller lines and fewer stranded last words, in the paragraph colour. */
.masthead__lead,
.entry__body,
.project__body,
.contact-form__intro,
.notfound__blurb,
.game__blurb,
.turmite__notes p {
  line-height: 1.7;
  color: var(--body);
  text-wrap: pretty;
}

/* Links inside running text are underlined, so they don't rely on colour alone. */
:is(
    .masthead__lead,
    .entry__body,
    .project__body,
    .contact-form__intro,
    .notfound__blurb,
    .game__blurb,
    .turmite__notes p
  )
  a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  text-underline-offset: 3px;
}
:is(
    .masthead__lead,
    .entry__body,
    .project__body,
    .contact-form__intro,
    .notfound__blurb,
    .game__blurb,
    .turmite__notes p
  )
  a:hover {
  text-decoration-color: currentColor;
}

:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 3px;
}

.shell {
  width: 100%;
  max-width: var(--column);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.skip-link {
  position: absolute;
  display: block; /* an inline <a> would ignore the width/height below */
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  background: var(--accent);
  color: var(--bg);
  padding: 0.5rem 0.9rem;
  z-index: 100;
}
.skip-link:focus {
  width: auto;
  height: auto;
  overflow: visible;
  clip-path: none;
  left: 1rem;
  top: 1rem;
}

/* ---------- Top bar ---------------------------------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.topbar.is-stuck {
  border-bottom-color: var(--line-soft);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 3.25rem;
}

.mark {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
}
.mark:hover {
  text-decoration: none;
  color: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}
.nav a {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}
.nav a:hover {
  color: var(--text);
  text-decoration: none;
}
.nav a.is-cta {
  color: var(--accent);
}
.nav a.is-cta:hover {
  color: var(--accent);
  text-decoration: underline;
}

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  border: 0;
  background: none;
  color: var(--faint);
  cursor: pointer;
  transition: color 0.15s ease;
}
.theme-toggle:hover {
  color: var(--accent);
}
.theme-toggle svg {
  width: 14px;
  height: 14px;
}

/* Shows the theme you would switch to: a sun while dark, a moon while light. */
.theme-toggle .icon-moon {
  display: none;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme-toggle .icon-sun {
    display: none;
  }
  :root:not([data-theme="dark"]) .theme-toggle .icon-moon {
    display: block;
  }
}
:root[data-theme="light"] .theme-toggle .icon-sun {
  display: none;
}
:root[data-theme="light"] .theme-toggle .icon-moon {
  display: block;
}

/* ---------- Résumé hover preview ---------------------------------------- */

.peek {
  position: relative;
  display: inline-flex;
}

.peek__card {
  display: block;
  position: absolute;
  top: calc(100% + 0.6rem);
  right: 0;
  width: 270px;
  padding: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-pop);
  opacity: 0;
  /* visibility (not pointer-events) does the hiding, so that once the card is
     shown the pointer can travel onto it without dropping the hover. */
  visibility: hidden;
  transform: translateY(-4px);
  transition:
    opacity 0.15s ease,
    transform 0.15s ease,
    visibility 0.15s;
  cursor: pointer;
  z-index: 60;
}
.peek__card:hover {
  text-decoration: none;
}

/* The gap between the link and the card would otherwise drop the hover. */
.peek__card::before {
  content: "";
  position: absolute;
  inset: -0.7rem 0 auto 0;
  height: 0.7rem;
}

/* Only where hovering is a real gesture; taps just follow the link. */
@media (hover: hover) and (pointer: fine) {
  .peek:hover .peek__card,
  .peek:focus-within .peek__card {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
}

/* A span by default, so it must be told to be a block — inline elements ignore
   aspect-ratio, which left the frame zero-width and the page size unreserved. */
.peek__frame {
  display: block;
  position: relative;
  overflow: hidden;
  background: #fff;
  aspect-ratio: 1 / 1.414;
}

.peek__frame canvas {
  display: block;
  width: 100%;
  height: auto;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.peek.is-ready .peek__frame canvas {
  opacity: 1;
}

.peek__state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 0.45rem;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  color: #8a8f98;
  background: #fff;
  text-align: center;
  padding: 1rem;
}
.peek.is-ready .peek__state {
  display: none;
}
.peek.is-error .peek__spinner {
  display: none;
}
.peek__state .err {
  display: none;
}
.peek.is-error .peek__state .err {
  display: block;
}
.peek.is-error .peek__state .wait {
  display: none;
}

.peek__spinner {
  width: 15px;
  height: 15px;
  border: 1.5px solid rgba(0, 0, 0, 0.12);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: peek-spin 0.7s linear infinite;
}
@keyframes peek-spin {
  to {
    transform: rotate(360deg);
  }
}

.peek__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.45rem;
  padding: 0 0.1rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}
.peek__foot .open {
  color: var(--accent);
}

/* ---------- Masthead ----------------------------------------------------- */

.masthead {
  position: relative;
  padding: 3.5rem 0 2.25rem;
}

.masthead__name {
  font-family: var(--serif);
  font-size: 2.6rem;
  line-height: 1;
  letter-spacing: 0.005em;
}

.masthead__role {
  margin-top: 0.55rem;
  font-size: 1.05rem;
  color: var(--body);
}
.masthead__role em {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1em;
  color: var(--text);
}

.masthead__lead {
  margin-top: 0.85rem;
  max-width: var(--measure);
  font-size: 1.0625rem;
}

.contacts {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 0.6rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}
.contacts a {
  color: var(--muted);
}
.contacts a:hover {
  color: var(--accent);
}
.contacts .sep {
  color: var(--line);
}

/* ---------- Margin symbols -----------------------------------------------
   The strip is the space left beside the page column, so symbols can be large
   without ever crossing a word. assets/marginalia.js drives the transform.
-------------------------------------------------------------------------- */

.marginalia {
  position: fixed;
  inset: 0;
  z-index: 0; /* content sits on z-index 1; see main / .footer below */
  pointer-events: none;
  overflow: hidden;
  /* `both` holds it at zero through the delay, covering the moment before the
     script has positioned anything. Pure CSS, so it fades in even if JS fails. */
  animation: marginalia-in 450ms ease-out 120ms both;
}

@keyframes marginalia-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.marginalia__side {
  position: absolute;
  top: 0;
  bottom: 0;
  /* Exactly the leftover space beside the page column. Percentage rather than
     vw, which would include the scrollbar and push the strip over the text. */
  width: max(0px, calc((100% - var(--column)) / 2));
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent);
}

.marginalia__side--left {
  left: 0;
}
.marginalia__side--right {
  right: 0;
}

.marginalia span {
  position: absolute;
  left: var(--x);
  top: 0;
  font-family: var(--serif);
  font-size: var(--size);
  line-height: 1;
  color: var(--accent);
  opacity: var(--peak);
  will-change: transform;
  /* Placed from --y until the script takes over, so the first paint is right. */
  /* The -50% centres the glyph on --x, so a symbol near the outer edge is not
     pushed out of the strip by its own width. */
  transform: translate3d(-50%, calc(var(--y) * 1vh), 0) rotate(var(--rot));
}

@media (max-width: 60rem) {
  .marginalia {
    display: none;
  }
}

/* ---------- Bands (label in the margin, content beside it) --------------- */

/* The rule sits on the inner element so it spans the text column rather than
   the whole viewport, and stops short of the page margin. */
.band__grid {
  display: grid;
  grid-template-columns: var(--label) minmax(0, 1fr);
  gap: 0 var(--gutter);
  padding-block: 1.75rem;
  border-top: 1px solid var(--line-soft);
}

.band__label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  text-align: right;
  padding-top: 0.25rem;
}

@media (max-width: 40rem) {
  .band__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.65rem;
  }
  .band__label {
    text-align: left;
    padding-top: 0;
  }
}

/* ---------- Work --------------------------------------------------------- */

.entry + .entry {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px dotted var(--line-soft);
}

.entry__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.2rem 1rem;
}

/* Three tiers, each with its own face and brightness, so the eye can hop from title to title:
   serif titles in --text, sans paragraphs in --body, mono details in --faint. */
.entry__what {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.15;
  flex: 1 1 auto;
}
.entry__what .at {
  font-weight: 400;
  color: var(--muted);
}

.entry__when {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: var(--faint);
  white-space: nowrap;
}

.entry__where {
  margin-top: 0.1rem;
  font-size: 0.86rem;
  color: var(--muted);
}

.entry__body {
  margin-top: 0.45rem;
  font-size: 1rem;
}

.stack {
  margin-top: 0.5rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--faint);
}
.stack b {
  font-weight: 400;
  color: var(--muted);
}

/* ---------- Projects ----------------------------------------------------- */

.project {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.15rem 0.9rem;
  padding: 0.8rem 0;
  border-top: 1px dotted var(--line-soft);
}
.project:first-child {
  border-top: 0;
  padding-top: 0;
}

.project__name {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.2;
}
.project__name a {
  color: var(--text);
}
.project__name a:hover {
  color: var(--accent);
  text-decoration: none;
}
.project__name .ext {
  font-family: var(--mono);
  font-size: 0.58em;
  color: var(--faint);
  vertical-align: 0.34em;
  margin-left: 0.2em;
}
.project__name a:hover .ext {
  color: var(--accent);
}

.project__meta {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--faint);
  white-space: nowrap;
}

.project__body {
  grid-column: 1 / -1;
  font-size: 0.96rem;
}

@media (max-width: 30rem) {
  .project {
    grid-template-columns: minmax(0, 1fr);
  }
  .project__meta {
    grid-column: 1;
    grid-row: auto;
  }
}

/* ---------- Contact ------------------------------------------------------ */

.contact-form {
  display: grid;
  gap: 1.15rem;
}

.contact-form__intro {
  font-size: 1rem;
}

.contact-form__trap {
  display: none;
}

.contact-form__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem 1.25rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field__label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  transition: color 0.15s ease;
}
.field:focus-within .field__label {
  color: var(--accent);
}

.field__input {
  width: 100%;
  margin: 0;
  padding: 0.65rem 0.8rem;
  font: inherit;
  font-size: 1rem; /* 16px: anything smaller makes iOS zoom the page on focus */
  line-height: 1.4;
  color: var(--text);
  background: var(--surface);
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}
.field__input:hover {
  border-bottom-color: var(--faint);
}
.field__input:focus {
  outline: none;
  border-bottom-color: var(--accent);
  /* Doubles the rule to 2px without shifting the layout by a pixel. */
  box-shadow: inset 0 -1px 0 var(--accent);
}
/* :user-invalid waits until someone has interacted, so an empty form isn't shouting. */
.field__input:user-invalid {
  border-bottom-color: var(--danger);
  box-shadow: inset 0 -1px 0 var(--danger);
}
.field__input--area {
  min-height: 8.5rem;
  resize: vertical;
  line-height: 1.55;
}
/* Browser autofill otherwise paints its own pale background over the theme. */
.field__input:-webkit-autofill {
  -webkit-text-fill-color: var(--text);
  -webkit-box-shadow: inset 0 0 0 100px var(--surface);
  caret-color: var(--text);
}

.contact-form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  margin-top: 0.2rem;
}

.button,
.contact-form__send,
.echo__start {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.8rem 1.2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-accent);
  background: var(--accent);
  border: 0;
  border-radius: 0;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    opacity 0.15s ease;
}
.button:hover,
.contact-form__send:hover,
.echo__start:hover {
  background: color-mix(in srgb, var(--accent) 85%, var(--text));
}
.contact-form__arrow {
  transition: transform 0.2s ease;
}
.contact-form__send:hover .contact-form__arrow {
  transform: translateX(3px);
}
.contact-form__send:disabled {
  opacity: 0.6;
  cursor: progress;
}
.contact-form__send:disabled .contact-form__arrow {
  transform: none;
}

.contact-form__status {
  font-size: 0.86rem;
  color: var(--muted);
}
.contact-form[data-state="sent"] .contact-form__status {
  color: var(--accent);
}
.contact-form[data-state="error"] .contact-form__status {
  color: var(--danger);
}

@media (max-width: 34rem) {
  .contact-form__row {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- Footer ------------------------------------------------------- */

.footer {
  position: relative;
  z-index: 1;
  padding-bottom: 2.25rem;
}

.footer__inner {
  border-top: 1px solid var(--line-soft);
  padding-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.3rem 1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--faint);
}
.footer a {
  color: var(--faint);
}
.footer a:hover {
  color: var(--accent);
}

/* ---------- Not found ---------------------------------------------------- */

.notfound {
  padding: 4.5rem 0 5rem;
}
.notfound__code {
  display: inline-block;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  transition:
    transform 0.25s cubic-bezier(0.3, 1.6, 0.5, 1),
    opacity 0.15s ease;
  font-family: var(--serif);
  font-size: 3.5rem;
  line-height: 1;
  color: var(--accent);
}
.notfound__rest {
  font-family: var(--serif);
  font-size: 1.5rem;
  margin-top: 0.4rem;
}
.notfound__blurb {
  margin-top: 0.45rem;
  max-width: var(--measure);
  font-size: 1.0625rem;
}
.notfound__links {
  margin-top: 1rem;
  display: flex;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}
.notfound__links .sep {
  color: var(--line);
}
.notfound__code:hover {
  transform: rotate(-4deg) scale(1.04);
}
.notfound__code:active {
  transform: rotate(-4deg) scale(0.97);
}

/* ---------- Echo (404 easter egg) --------------------------------------- */

.echo {
  --echo-start: 120ms; /* assets/echo.js sets these, so the chimes land with the wedges */
  --echo-stagger: 110ms;
  --echo-duration: 620ms;
  display: grid;
  gap: 1rem;
  max-width: 21rem;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
}

.echo__best {
  text-align: center;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}
.echo__best b {
  font-weight: 400;
  color: var(--text);
}

.echo__stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
}

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

.echo__pad {
  --pad: color-mix(in srgb, var(--hue) var(--echo-idle), var(--echo-idle-base));
  fill: var(--pad);
  stroke: var(--pad);
  stroke-width: 6;
  stroke-linejoin: round;
  /* Transforms pivot on the ring's centre, so wedges can spin and fan out around it. */
  transform-box: view-box;
  transform-origin: center;
  transition:
    fill 0.09s ease,
    stroke 0.09s ease,
    filter 0.12s ease,
    transform 0.12s ease;
  outline: none;
}
.echo__pad[aria-disabled="true"] {
  cursor: default;
}
.echo__pad:not([aria-disabled="true"]) {
  cursor: pointer;
}
.echo__pad:not([aria-disabled="true"]):hover {
  --pad: color-mix(in srgb, var(--hue) var(--echo-hover), var(--echo-idle-base));
}
.echo__pad:focus-visible {
  stroke: var(--text);
}
.echo__pad.is-lit {
  --pad: color-mix(in srgb, var(--hue) var(--echo-lit), #fff);
  filter: drop-shadow(0 0 var(--echo-glow) color-mix(in srgb, var(--hue) 75%, transparent));
  transform: translate(calc(var(--dx) * 3px), calc(var(--dy) * 3px));
}

.echo__hub {
  position: absolute;
  inset: 31%;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--bg);
  box-shadow: inset 0 0 0 1px var(--line-soft);
}
.echo__start {
  width: 100%;
  height: 100%;
  justify-content: center;
  padding: 0;
  border-radius: 50%;
}
.echo__round {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 9vw, 2.6rem);
  line-height: 1;
  color: var(--text);
}

.echo__status {
  min-height: 1.4em;
  text-align: center;
  font-size: 0.86rem;
  color: var(--muted);
}
.echo[data-state="input"] .echo__status {
  color: var(--accent);
}
.echo[data-state="over"] .echo__status {
  color: var(--text);
}

/* Entrance: the wedges spin out from the hub one after another, then the hub pops in.
   `backwards` holds each one hidden through its delay but lets go when it's done, so the
   lit state's transform isn't overridden by a finished animation. */
.echo.is-entering .echo__pad {
  animation: echo-pad-in var(--echo-duration) cubic-bezier(0.2, 0.9, 0.25, 1.18) backwards;
  animation-delay: calc(var(--echo-start) + var(--i) * var(--echo-stagger));
}
.echo.is-entering .echo__hub {
  animation: echo-hub-in 0.5s cubic-bezier(0.3, 1.5, 0.5, 1) backwards;
  animation-delay: calc(var(--echo-start) + 5 * var(--echo-stagger) + 80ms);
}
.echo.is-entering .echo__best,
.echo.is-entering .echo__status {
  animation: echo-fade-in 0.45s ease backwards;
}

@keyframes echo-pad-in {
  from {
    opacity: 0;
    transform: rotate(-150deg) scale(0.3);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes echo-hub-in {
  from {
    opacity: 0;
    transform: scale(0.2);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes echo-fade-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.echo.is-wrong .echo__ring {
  animation: echo-wobble 0.45s ease;
}
@keyframes echo-wobble {
  20%,
  60% {
    transform: rotate(-5deg);
  }
  40%,
  80% {
    transform: rotate(5deg);
  }
}

/* ---------- Project pages (Othello, Turmite Sim) ------------------------- */

.game {
  padding: 2.25rem 0 4rem;
}

.game__back {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}
.game__back:hover {
  color: var(--accent);
  text-decoration: none;
}

.game__title {
  margin-top: 0.9rem;
  font-family: var(--serif);
  font-size: 2.3rem;
  line-height: 1;
}

.game__blurb {
  margin-top: 0.5rem;
  max-width: var(--measure);
  font-size: 1.0625rem;
}

.game__stage {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
}

.button--quiet {
  color: var(--text);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--line);
}
.button--quiet:hover {
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--faint);
}

/* Othello menu */

.modes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.mode {
  display: grid;
  align-content: start;
  gap: 0.4rem;
  padding: 1.1rem 1.2rem 1.2rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  transition: border-color 0.15s ease;
}
.mode:hover {
  text-decoration: none;
  border-color: var(--accent);
}

.mode__label {
  font-family: var(--serif);
  font-size: 1.4rem;
  line-height: 1.1;
}
.mode__arrow {
  display: inline-block;
  margin-left: 0.45rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--faint);
  transition:
    transform 0.2s ease,
    color 0.15s ease;
}
.mode:hover .mode__arrow {
  color: var(--accent);
  transform: translateX(3px);
}

.mode__note {
  font-size: 0.94rem;
  color: var(--body);
}

/* Othello board. game.js paints cells with inline colours: the random board colour,
   and literal black and white for the discs. */

.othello {
  /* Eight cells and nine 3px gaps fill the column on a phone, capped on wider screens. */
  --cell: min(calc((100vw - 2 * var(--pad) - 27px) / 8), 3.4rem);
  display: grid;
  justify-items: start;
  gap: 1rem;
}

.othello__bar,
.othello__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
}

.othello__turn {
  border-collapse: collapse;
}
.othello__turn td {
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}
.othello__turn p {
  transition: color 0.2s ease;
}

.othello__board {
  border-collapse: separate;
  border-spacing: 3px;
  background: var(--line);
}
.othello__board td {
  width: var(--cell);
  height: var(--cell);
  padding: 0;
  background: var(--surface);
  border-radius: 2px;
  transition: background-color 0.18s ease;
}

.othello__status {
  min-height: 1.3em;
  font-family: var(--serif);
  font-size: 1.3rem;
  line-height: 1.2;
}

.othello__board td.is-legal {
  cursor: pointer;
}

.othello__message,
.othello__note {
  font-size: 0.95rem;
  color: var(--body);
}
.othello__note:empty {
  display: none;
}

.othello__lobby,
.othello__invite {
  display: grid;
  justify-items: start;
  gap: 1rem;
}

.othello__code {
  font-family: var(--mono);
  font-size: 1.6rem;
  letter-spacing: 0.22em;
  color: var(--text);
}

.othello__join {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0.75rem;
}
.othello__join .button {
  height: 2.5rem;
  padding-block: 0;
}
.othello__code-input {
  width: 9rem;
  font-family: var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

a.button:hover {
  text-decoration: none;
}
.button:disabled {
  opacity: 0.5;
  cursor: default;
}

/* Turmite Sim */

.turmite {
  display: grid;
  gap: 1.25rem;
}

.turmite__canvas {
  display: block;
  width: 100%;
  max-width: 30rem;
  height: auto;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  image-rendering: pixelated;
}

.turmite__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0.75rem;
}
.turmite__bar .button {
  height: 2.5rem;
  padding-block: 0;
}
.turmite__bar .button[aria-pressed="true"] {
  background: var(--danger);
}

.control {
  display: grid;
  gap: 0.3rem;
}

.control > span,
.turmite__head {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.control__input,
.turmite__state select,
.turmite__state input {
  height: 2.5rem;
  min-width: 0;
  margin: 0;
  padding: 0 0.55rem;
  font: inherit;
  font-size: 1rem; /* 16px, or iOS zooms in on focus */
  color: var(--text);
  background: var(--surface);
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  color-scheme: var(--scheme);
}
.control__input:focus,
.turmite__state select:focus,
.turmite__state input:focus {
  outline: none;
  border-bottom-color: var(--accent);
  box-shadow: inset 0 -1px 0 var(--accent);
}
.control__input--short {
  width: 5.5rem;
}
/* A single letter beside the native arrow: on a phone, side padding would clip it. */
.turmite__state select {
  padding: 0 0 0 0.4rem;
}

.turmite__rules {
  display: grid;
  gap: 0.45rem;
}

.turmite__head,
.turmite__state {
  display: grid;
  grid-template-columns: 4.5rem repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 0.45rem 1.25rem;
}

.turmite__states {
  display: grid;
  gap: 0.45rem;
}

.turmite__name {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  white-space: nowrap;
}

.turmite__rule {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.35rem;
}

.turmite__adjust {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.3rem;
}
.turmite__adjust .button {
  width: 2.5rem;
  height: 2.5rem;
  justify-content: center;
  padding: 0;
  font-size: 1rem;
  letter-spacing: 0;
}

.turmite__notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2rem;
  margin-top: 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
}
.turmite__notes h2 {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
}
.turmite__notes p {
  margin-top: 0.5rem;
  font-size: 0.96rem;
}

@media (max-width: 40rem) {
  .modes,
  .turmite__notes {
    grid-template-columns: minmax(0, 1fr);
  }

  /* The state name takes its own line, leaving the full width to the two rules. */
  .turmite__head,
  .turmite__state {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .turmite__head > span:first-child {
    display: none;
  }
  .turmite__name {
    grid-column: 1 / -1;
    margin-top: 0.35rem;
  }
}

/* ---------- Small screens ------------------------------------------------ */

@media (max-width: 30rem) {
  .masthead {
    padding: 2.25rem 0 1.5rem;
  }
  .masthead__name {
    font-size: 2rem;
  } /* leaves slack for the wider fallback serif */

  /* The monospaced details go unreadable first, so they scale up, not down. */
  .contacts {
    font-size: 0.84rem;
    gap: 0.2rem 0.55rem;
  }
  .band__label,
  .field__label {
    font-size: 0.75rem;
  }
  .entry__when,
  .project__meta {
    font-size: 0.8rem;
  }
  .stack {
    font-size: 0.78rem;
    line-height: 1.85;
  }
  .entry__where {
    font-size: 0.88rem;
  }
  .footer__inner {
    font-size: 0.76rem;
  }

  .entry__head {
    display: block;
  }
  .entry__when {
    display: block;
    margin-top: 0.1rem;
  }

  .project__meta {
    color: var(--faint);
  }

  .nav {
    gap: 0.95rem;
  }
  .nav a {
    font-size: 0.76rem;
  }
  .mark {
    font-size: 0.8rem;
  }

  .notfound {
    padding: 3rem 0 3.5rem;
  }
  .notfound__links {
    font-size: 0.78rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  /* The symbols stay as static decoration: the rule above already places them
     from --y, and assets/marginalia.js opts out of the scroll listener. */
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}