/* ---------------------------------------------------------------
   Pixelight — pixelight.com.au
   Single-page consulting site. Plain HTML + CSS, no build step.
   --------------------------------------------------------------- */

@font-face {
  font-family: "Geist";
  src: url("/fonts/geist-sans-variable.woff2") format("woff2-variations"),
    url("/fonts/geist-sans-variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ---------- tokens ---------- */
:root {
  --paper: oklch(0.985 0.003 250);
  --surface: oklch(1 0 0);
  --surface-soft: oklch(0.97 0.005 250);
  --ink: oklch(0.16 0.012 255);
  --ink-soft: oklch(0.4 0.012 255);
  --ink-muted: oklch(0.58 0.012 255);
  --rule: oklch(0.91 0.005 250);
  --rule-strong: oklch(0.84 0.006 250);
  --accent: oklch(0.34 0.085 252);
  --accent-hover: oklch(0.27 0.092 252);
  --accent-soft: oklch(0.94 0.025 252);
  --on-accent: oklch(0.985 0.003 250);
  --selection: oklch(0.88 0.04 252);

  --font-sans:
    "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono:
    ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  /* fluid type scale */
  --step--1: clamp(0.8125rem, 0.785rem + 0.13vw, 0.875rem);
  --step-0: clamp(0.9375rem, 0.91rem + 0.15vw, 1rem);
  --step-1: clamp(1.0625rem, 1.025rem + 0.2vw, 1.15rem);
  --step-2: clamp(1.25rem, 1.18rem + 0.4vw, 1.5rem);
  --step-3: clamp(1.625rem, 1.45rem + 0.85vw, 2.125rem);
  --step-4: clamp(2.125rem, 1.85rem + 1.4vw, 3rem);
  --step-5: clamp(2.875rem, 2.1rem + 3.7vw, 5.5rem);

  --measure: 60ch;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --container: 70rem;
  --section-gap: clamp(4rem, 9vw, 7.5rem);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 999px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "cv11";
  font-size: var(--step-1);
  line-height: 1.55;
  letter-spacing: -0.005em;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

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

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
}

hr {
  border: 0;
}

/* ---------- accessibility ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  padding: 0.55rem 0.95rem;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-size: var(--step-0);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
  transition: transform 180ms ease-out;
  z-index: 50;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- layout shells ---------- */
.page-header,
.page-footer__inner,
main {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

main {
  display: flex;
  flex-direction: column;
  gap: var(--section-gap);
  padding-bottom: clamp(4rem, 8vw, 6rem);
}

/* ---------- header ---------- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: clamp(1.25rem, 2.5vw, 1.75rem);
  position: sticky;
  top: 0;
  background: color-mix(in oklch, var(--paper) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  z-index: 20;
  border-bottom: 1px solid transparent;
  transition: border-color 220ms ease;
}

@supports not (backdrop-filter: blur(8px)) {
  .page-header {
    background: var(--paper);
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.018em;
  font-size: var(--step-0);
}

.brand__mark {
  width: 1.5rem;
  height: 1.5rem;
  fill: var(--ink);
  flex-shrink: 0;
  overflow: visible;
}

.brand__mark-lit {
  fill: var(--accent);
}

.brand__name {
  line-height: 1;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  background: var(--surface);
  transition:
    color 160ms ease, border-color 160ms ease, background 160ms ease,
    transform 200ms ease;
}

.header-cta:hover {
  color: var(--ink);
  border-color: var(--rule-strong);
  background: var(--surface-soft);
}

.header-cta__arrow {
  display: inline-block;
  transition: transform 200ms ease;
}

.header-cta:hover .header-cta__arrow {
  transform: translateX(2px);
}

/* ---------- hero ---------- */
.hero {
  padding-top: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: clamp(1rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  max-width: 50rem;
}

.hero__heading {
  font-size: clamp(2rem, 1.55rem + 2.1vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.028em;
  color: var(--ink);
  margin: 0;
  max-width: 22ch;
}

.hero__lede {
  font-size: var(--step-2);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.012em;
  color: var(--ink-soft);
  max-width: 42rem;
  margin: 0;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.25rem);
  margin-top: clamp(0.5rem, 1.5vw, 1rem);
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: var(--step--1);
  color: var(--ink-soft);
  margin: 0;
  padding: 0.45rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
}

.hero__status-dot {
  width: 0.45rem;
  height: 0.45rem;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 14%, transparent);
}

/* ---------- button ---------- */
.button {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.15rem 0.85rem 1.25rem;
  font-size: var(--step-0);
  font-weight: 500;
  letter-spacing: -0.005em;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition:
    background 180ms ease, color 180ms ease, border-color 180ms ease,
    box-shadow 200ms ease, transform 200ms ease;
}

.button--primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
  box-shadow:
    0 1px 0 0 oklch(1 0 0 / 0.04) inset,
    0 1px 2px 0 oklch(0 0 0 / 0.04);
}

.button--primary:hover {
  background: oklch(0.08 0.01 255);
  border-color: oklch(0.08 0.01 255);
  box-shadow:
    0 1px 0 0 oklch(1 0 0 / 0.06) inset,
    0 4px 14px -4px oklch(0 0 0 / 0.18);
}

.button--primary:active {
  transform: translateY(1px);
}

.button__arrow {
  display: inline-block;
  transition: transform 220ms ease;
  font-size: 0.95em;
}

.button:hover .button__arrow {
  transform: translateX(3px);
}

/* ---------- section frame ---------- */
.section {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  scroll-margin-top: 5rem;
}

.section__head {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 56rem;
}

.section__kicker {
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--accent);
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.section__kicker::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}

.section__heading {
  font-size: var(--step-3);
  font-weight: 600;
  letter-spacing: -0.028em;
  line-height: 1.1;
  color: var(--ink);
  margin: 0;
}

.section__lede {
  font-size: var(--step-1);
  color: var(--ink-soft);
  max-width: 48rem;
  margin: 0;
  line-height: 1.55;
}

/* ---------- capabilities (clean list) ---------- */
.capabilities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
}

.capabilities li {
  font-size: var(--step-1);
  color: var(--ink);
  font-weight: 500;
  letter-spacing: -0.012em;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.capabilities li::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

@media (min-width: 720px) {
  .capabilities {
    column-gap: clamp(1.5rem, 4vw, 3rem);
  }

  .capabilities li {
    padding: 1.05rem 0;
  }
}

/* ---------- speclist (engagement model + stack) ---------- */
.speclist {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--rule);
}

.speclist__row {
  display: grid;
  grid-template-columns: minmax(0, 9rem) minmax(0, 1fr);
  column-gap: clamp(1rem, 3vw, 2.5rem);
  align-items: baseline;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
}

.speclist__label {
  font-size: var(--step--1);
  color: var(--ink-muted);
  font-weight: 500;
  letter-spacing: 0;
}

.speclist__value {
  margin: 0;
  font-size: var(--step-1);
  color: var(--ink);
  letter-spacing: -0.008em;
}

@media (max-width: 560px) {
  .speclist__row {
    grid-template-columns: 1fr;
    row-gap: 0.3rem;
  }
}

/* ---------- clients (sector → names rows) ---------- */
.clients {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--rule);
}

.clients__row {
  display: grid;
  grid-template-columns: minmax(0, 14rem) minmax(0, 1fr);
  column-gap: clamp(1.25rem, 4vw, 3.5rem);
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}

.clients__sector {
  font-size: var(--step--1);
  color: var(--accent);
  font-weight: 500;
  margin: 0;
  padding-top: 0.55rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0;
}

.clients__sector::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.clients__names {
  margin: 0;
}

.clients__names ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.clients__names li {
  font-size: var(--step-2);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.018em;
  line-height: 1.25;
}

@media (max-width: 640px) {
  .clients__row {
    grid-template-columns: 1fr;
    row-gap: 0.65rem;
  }

  .clients__sector {
    padding-top: 0;
  }
}

/* ---------- prose ---------- */
.prose {
  display: flex;
  flex-direction: column;
  gap: 1.1em;
  max-width: var(--measure);
}

.prose p {
  color: var(--ink-soft);
  line-height: 1.65;
  font-size: var(--step-1);
}

/* ---------- links ---------- */
.link {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: color-mix(in oklch, var(--accent) 35%, transparent);
  transition: color 140ms ease, text-decoration-color 140ms ease;
}

.link:hover {
  color: var(--accent-hover);
  text-decoration-color: currentColor;
}

/* ---------- contact ---------- */
.section--contact {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 3rem);
  scroll-margin-top: 5rem;
}

.contact-lede {
  font-size: var(--step-1);
  color: var(--ink-soft);
  max-width: 42rem;
  margin: 0;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.contact-card__email {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.028em;
  color: var(--ink);
  text-decoration: none;
  width: fit-content;
  line-height: 1.15;
  word-break: break-all;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid color-mix(in oklch, var(--ink) 18%, transparent);
  transition: color 160ms ease, border-color 160ms ease;
}

.contact-card__email:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.contact-card__arrow {
  display: inline-block;
  transition: transform 220ms ease;
}

.contact-card__email:hover .contact-card__arrow {
  transform: translate(3px, -3px);
}

.contact-card__meta {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--rule);
}

.contact-card__row {
  display: grid;
  grid-template-columns: minmax(0, 7rem) minmax(0, 1fr);
  column-gap: clamp(1rem, 3vw, 2rem);
  align-items: baseline;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--rule);
}

.contact-card__row dt {
  font-size: var(--step--1);
  color: var(--ink-muted);
  font-weight: 500;
}

.contact-card__row dd {
  margin: 0;
  color: var(--ink);
  font-size: var(--step-0);
  word-break: break-word;
}

@media (max-width: 480px) {
  .contact-card__row {
    grid-template-columns: 1fr;
    row-gap: 0.2rem;
  }
}

/* ---------- footer ---------- */
.page-footer {
  margin-top: clamp(2rem, 5vw, 4rem);
  border-top: 1px solid var(--rule);
}

.page-footer__inner {
  padding-block: clamp(1.5rem, 3vw, 2.25rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}

.page-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.005em;
  margin: 0;
}

.page-footer__mark {
  width: 0.4rem;
  height: 0.4rem;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}

.page-footer__meta {
  font-size: var(--step--1);
  color: var(--ink-muted);
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.4em 0.7em;
  align-items: baseline;
  margin: 0;
}

.page-footer__link {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease, border-color 140ms ease;
}

.page-footer__link:hover {
  color: var(--accent);
  border-bottom-color: color-mix(in oklch, var(--accent) 35%, transparent);
}

/* ---------- motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}