/* Used by: index.html (AGB page) */
/* Clean, modern, readable. No framework. */
:root{
  --bg: #0b0c10;
  --panel: rgba(255,255,255,.06);
  --panel-2: rgba(255,255,255,.04);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.68);
  --line: rgba(255,255,255,.12);
  --accent: #7c5cff;         /* modern purple */
  --accent-2: #19c2ff;       /* cyan edge */
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1100px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

@media (prefers-color-scheme: light){
  :root{
    --bg: #f6f7fb;
    --panel: rgba(0,0,0,.05);
    --panel-2: rgba(0,0,0,.03);
    --text: rgba(0,0,0,.88);
    --muted: rgba(0,0,0,.62);
    --line: rgba(0,0,0,.12);
    --shadow: 0 10px 25px rgba(0,0,0,.10);
  }
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 20% -10%, rgba(124,92,255,.25), transparent 60%),
    radial-gradient(900px 600px at 95% 10%, rgba(25,194,255,.18), transparent 55%),
    radial-gradient(900px 700px at 40% 110%, rgba(124,92,255,.16), transparent 55%),
    var(--bg);
  line-height: 1.55;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

.container{
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.skip{
  position: absolute;
  left: -9999px;
  top: 12px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.skip:focus{ left: 12px; z-index: 9999; }

.header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--line);
}

.header__inner{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 1rem;
  padding: .9rem 0;
}

.brand{
  display: flex;
  align-items: center;
  gap: .75rem;
  min-width: 220px;
}
.brand__logo{
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  font-weight: 800;
  background:
    radial-gradient(24px 24px at 30% 30%, rgba(255,255,255,.35), transparent 60%),
    linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: var(--shadow);
}
.brand__name{ font-weight: 780; letter-spacing: .2px; }
.brand__tag{ font-size: .85rem; color: var(--muted); }

.nav{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  gap: .65rem .9rem;
  font-size: .95rem;
  color: var(--muted);
}
.nav a{
  padding: .35rem .55rem;
  border-radius: 10px;
}
.nav a:hover{
  background: var(--panel-2);
  text-decoration: none;
  color: var(--text);
}

.hero{
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 1.2rem;
  padding: 1.4rem 0 1.1rem;
}
@media (max-width: 900px){
  .hero{ grid-template-columns: 1fr; }
  .header__inner{
    grid-template-columns: 1fr;
    justify-items: center;
  }
  .brand{
    justify-content: center;
    min-width: 0;
    width: 100%;
  }
  .brand__text{ text-align: center; }
  .nav{
    display: flex;
    justify-content: center;
  }
}

.hero__card{
  padding: 1.35rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero__card h1{
  margin: 0 0 .55rem;
  letter-spacing: -0.6px;
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
}
.lead{
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 1.02rem;
}

.meta{
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0 0 1.05rem;
}
.pill{
  padding: .45rem .65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  font-size: .9rem;
  color: var(--muted);
}

.actions{
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .62rem .85rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  text-decoration: none !important;
  font-weight: 650;
}
.btn:hover{ filter: brightness(1.05); }
.btn--primary{
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 88%, white 12%), color-mix(in srgb, var(--accent-2) 86%, white 14%));
  color: white;
}
.btn[aria-disabled="true"]{
  opacity: .55;
  pointer-events: none;
}

.hero__side{
  display: grid;
  gap: 1rem;
}

.card{
  padding: 1rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}
.card.subtle{
  background: var(--panel-2);
  box-shadow: none;
}
.card__title{
  margin: 0 0 .5rem;
  font-size: 1.05rem;
  letter-spacing: -0.2px;
}
.checklist{
  margin: .6rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}
.checklist li{ margin: .35rem 0; }

.toc{
  margin: 1rem 0 1.2rem;
  padding: 1rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
}
.toc h2{
  margin: 0 0 .55rem;
  font-size: 1.1rem;
}
.toc ol{
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: .3rem;
  color: var(--muted);
}
.toc a:hover{ color: var(--text); }

.content{
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 1.2rem;
  padding: .2rem 0 2rem;
}
@media (max-width: 900px){
  .content{ grid-template-columns: 1fr; }
}

.content__card h2{
  margin-top: 1.2rem;
  margin-bottom: .5rem;
  letter-spacing: -0.3px;
}
.content__card h2:first-of-type{ margin-top: 0; }
.content__card p, .content__card ul{
  color: var(--muted);
}
.content__card strong{ color: var(--text); }

.callout{
  margin: .85rem 0;
  padding: .85rem .9rem;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, transparent), transparent);
  color: var(--muted);
}
.callout.subtle{
  border-color: var(--line);
  background: var(--panel-2);
}

.details{
  margin: .85rem 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel-2);
  padding: .25rem .75rem;
}
.details summary{
  cursor: pointer;
  padding: .55rem .1rem;
  color: var(--text);
  font-weight: 650;
}
.details p{ margin: .2rem 0 .8rem; }

.sep{
  border: none;
  border-top: 1px solid var(--line);
  margin: 1.2rem 0;
}

.links{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .5rem;
  color: var(--muted);
}
.links a{
  display: inline-block;
  padding: .45rem .6rem;
  border-radius: 12px;
  border: 1px solid transparent;
}
.links a:hover{
  background: var(--panel-2);
  border-color: var(--line);
  text-decoration: none;
  color: var(--text);
}

.muted{ color: var(--muted); }
.small{ font-size: .9rem; }
code{
  font-family: var(--mono);
  font-size: .95em;
  padding: .14rem .3rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel-2);
}

.footer{
  border-top: 1px solid var(--line);
  padding: 1rem 0;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
}
.footer__inner{
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Print: make it readable on paper/PDF */
@media print{
  .header, .footer, .nav, .actions, .hero__side, .content__side, .skip{ display: none !important; }
  body{ background: white; color: black; }
  .card, .hero__card, .toc{ box-shadow: none; border: 1px solid #ddd; background: white; }
  .muted{ color: #333; }
}