/* Operra AI Pty Ltd — operra.com.au
   Interim site. Single stylesheet shared by index / privacy / terms. */

:root {
  color-scheme: light;

  --ground:      #F1F2EF;
  --surface:     #FFFFFF;
  --ink:         #141A17;
  --muted:       #5A635D;
  --line:        #D8DCD5;
  --accent:      #0E6B5C;
  --accent-ink:  #FFFFFF;
  --accent-soft: #DCEAE5;

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body:    "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --measure: 34rem;
  --wide:    58rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --ground:      #101311;
    --surface:     #181C19;
    --ink:         #ECEFE9;
    --muted:       #99A39C;
    --line:        #2A302C;
    --accent:      #57C9B2;
    --accent-ink:  #0B1513;
    --accent-soft: #1B2C28;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ground:      #101311;
  --surface:     #181C19;
  --ink:         #ECEFE9;
  --muted:       #99A39C;
  --line:        #2A302C;
  --accent:      #57C9B2;
  --accent-ink:  #0B1513;
  --accent-soft: #1B2C28;
}

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

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

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-synthesis-weight: none;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { text-decoration-thickness: 2px; }

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

/* ---------- shell ---------- */

.shell {
  width: 100%;
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: 20px;
}

.masthead {
  border-bottom: 1px solid var(--line);
  padding-block: 22px;
}

.masthead .shell {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
}

.wordmark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.masthead .entity {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

main { padding-block: 0 0; }

section { padding-block: 52px; }
section + section { border-top: 1px solid var(--line); }

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

/* ---------- type ---------- */

h1, h2, h3 {
  font-family: var(--display);
  text-wrap: balance;
  margin: 0;
  letter-spacing: -0.015em;
}

h1 {
  font-weight: 700;
  font-size: clamp(2rem, 6.4vw, 3.1rem);
  line-height: 1.08;
}

h2 {
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 1.7rem);
  line-height: 1.2;
}

h3 {
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.3;
}

p { margin: 0; }

.stack   { display: flex; flex-direction: column; gap: 18px; }
.stack-s { display: flex; flex-direction: column; gap: 10px; }
.stack-l { display: flex; flex-direction: column; gap: 30px; }

.lede {
  font-size: clamp(1.1rem, 2.3vw, 1.28rem);
  line-height: 1.55;
  color: var(--ink);
}

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

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}

small, .small { font-size: 0.9rem; }

/* ---------- waveform rule ---------- */

.wave {
  display: block;
  width: 100%;
  max-width: 260px;
  height: 20px;
  overflow: visible;
}
.wave rect { fill: var(--accent); }

/* ---------- capability list ---------- */

.capabilities {
  display: grid;
  gap: 26px;
  margin: 0;
  padding: 0;
}

@media (min-width: 720px) {
  .capabilities { grid-template-columns: repeat(3, 1fr); gap: 32px; }
}

.capability {
  border-left: 2px solid var(--accent);
  padding-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.capability p { font-size: 0.97rem; color: var(--muted); }

/* ---------- registry block ---------- */

.registry {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 26px 22px;
  display: grid;
  gap: 14px 28px;
  font-family: var(--mono);
  font-size: 0.86rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

@media (min-width: 620px) {
  .registry { grid-template-columns: 11rem 1fr; }
}

.registry dt {
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.68rem;
  padding-top: 0.15em;
}

.registry dd { margin: 0; color: var(--ink); }

/* ---------- contact ---------- */

.contact-line {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.15rem, 3.6vw, 1.55rem);
  letter-spacing: -0.01em;
  word-break: break-word;
}

.note {
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  padding: 16px 18px;
  font-size: 0.95rem;
}

/* ---------- prose pages ---------- */

.prose { max-width: var(--measure); }
.prose h2 { margin-top: 34px; }
.prose h2:first-of-type { margin-top: 0; }
.prose p { margin-top: 12px; }
.prose ul { margin: 12px 0 0; padding-left: 1.15rem; }
.prose li { margin-top: 7px; }
.prose li::marker { color: var(--accent); }

.backlink {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 30px 44px;
  font-size: 0.87rem;
  color: var(--muted);
}

.site-footer .shell {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  align-items: baseline;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}