/* Reset, page furniture, and typography. */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(1100px 560px at 84% -8%, color-mix(in srgb, var(--red) 10%, transparent), transparent 60%),
    radial-gradient(900px 480px at 6% 108%, color-mix(in srgb, var(--cyan) 7%, transparent), transparent 60%),
    repeating-linear-gradient(0deg, color-mix(in srgb, var(--gold) 2%, transparent) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(90deg, color-mix(in srgb, var(--gold) 2%, transparent) 0 1px, transparent 1px 46px),
    var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  font-size: 17px;
  min-height: 100vh;
  zoom: var(--zoom, 1);
}

.wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(14px, 3vw, 34px);
}

/* ---------- nav ---------- */
nav {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: center;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  padding: 11px clamp(14px, 3vw, 34px);
}
nav .brand {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--gold2);
  font-size: 15px;
  letter-spacing: 0.04em;
}
nav .brand span {
  color: var(--red);
}
nav .links {
  margin-left: auto;
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}
nav a {
  color: var(--dim);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
}
nav a:hover {
  color: var(--gold2);
}
nav a.guide {
  color: var(--gold2);
}

.navctl {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-left: 14px;
}
.tsize {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.navbtn {
  background: transparent;
  border: 0;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 6px 10px;
  cursor: pointer;
  transition: 0.15s;
  white-space: nowrap;
}
.tsize .navbtn {
  border-right: 1px solid var(--line);
}
.tsize .navbtn:last-child {
  border-right: 0;
}
.navbtn:hover {
  color: var(--gold2);
  background: color-mix(in srgb, var(--gold) 10%, transparent);
}
#themeBtn {
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--gold2);
}
#themeBtn:hover {
  background: var(--gold);
  color: var(--on-gold);
}
#modeBtn {
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--cyan-soft);
}
#modeBtn:hover {
  background: var(--cyan);
  color: var(--on-cyan);
}

/* ---------- header ---------- */
header {
  text-align: center;
  padding: clamp(34px, 7vw, 72px) 0 clamp(12px, 3vw, 30px);
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.42em;
  color: var(--gold);
  text-transform: uppercase;
}
h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 10vw, 96px);
  line-height: 0.9;
  margin: 0.16em 0;
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, #fff, var(--gold2) 50%, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
:root[data-theme='light'] h1 {
  background: linear-gradient(180deg, #5a3d0a, #8a5a12 55%, #a8791a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tagline {
  font-family: var(--font-display);
  color: var(--dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 12px;
  margin-top: 8px;
}
.tagline b {
  color: var(--cyan);
}
.tagline em {
  color: var(--red);
  font-style: normal;
}
.sub {
  font-style: italic;
  color: var(--dim);
  max-width: 62ch;
  margin: 18px auto 0;
  font-size: 16px;
}
.sub a {
  color: var(--gold2);
}

/* ---------- sections ---------- */
section {
  padding: clamp(26px, 4vw, 46px) 0;
  border-top: 1px solid var(--line);
}
.sec-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--red);
  text-transform: uppercase;
}
h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 4.4vw, 38px);
  margin: 0.12em 0 0.4em;
  color: var(--gold2);
  line-height: 1.05;
}
.lead {
  font-size: 18px;
  color: var(--ink);
  max-width: 74ch;
}
.lead b {
  color: var(--gold2);
}
p {
  margin: 0 0 0.9em;
  color: var(--body);
  max-width: 76ch;
}
.mono {
  font-family: var(--font-mono);
}

footer {
  border-top: 1px solid var(--line);
  padding: 26px 0 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--dim);
  line-height: 1.8;
}
footer b {
  color: var(--gold);
}

/* ---------- accessibility ---------- */
a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 2.5px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

/* Simple mode hides the deep panels. */
body.simple .simple-hide {
  display: none !important;
}
body.simple #oracle .grid2 {
  grid-template-columns: 1fr;
}