/* ============ Base ============ */
:root{
  --bg: #fbf7ef;         /* cream */
  --panel: #ffffff;      /* white */
  --ink: #12161c;        /* near-black */
  --muted: #5c6673;      /* slate */
  --line: rgba(18,22,28,.12);

  --accent: #1f6feb;     /* strong but not shocking */
  --accent2: #b42318;    /* used sparingly */
  --ok: #157f3b;

  --shadow: 0 10px 30px rgba(18,22,28,.10);
  --radius: 18px;

  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--sans);
  color: var(--ink);
  background: radial-gradient(1200px 800px at 20% 0%, rgba(31,111,235,.08), transparent 60%),
              radial-gradient(1200px 800px at 90% 10%, rgba(180,35,24,.06), transparent 55%),
              var(--bg);
  line-height: 1.55;
}

a{ color: var(--accent); text-decoration: none; }
a:hover{ text-decoration: underline; }
.wrap{ max-width: 1100px; margin: 0 auto; padding: 0 18px; }

.skip-link{
  position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  position:static; width:auto; height:auto; padding:10px 12px; background: var(--panel);
  border:1px solid var(--line); border-radius: 10px;
}

/* ============ Header / Nav ============ */
.site-header{
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(251,247,239,.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-row{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}
.brand{ display:flex; flex-direction: column; gap: 2px; }
.brand-link{ display:inline-flex; align-items:center; gap: 10px; color: var(--ink); }
.brand-mark{
  width: 34px; height: 34px; display:grid; place-items:center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(31,111,235,.18), rgba(180,35,24,.12));
  border: 1px solid var(--line);
}
.brand-text{ font-weight: 700; letter-spacing: .2px; }
.brand-tag{ font-size: 13px; color: var(--muted); }

.nav{ display:flex; flex-wrap:wrap; gap: 10px; align-items:center; justify-content:flex-end; }
.nav-link{
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 12px;
  color: var(--ink);
  border: 1px solid transparent;
}
.nav-link:hover{ background: rgba(31,111,235,.08); border-color: rgba(31,111,235,.15); text-decoration:none; }
.nav-link.active{
  background: rgba(31,111,235,.12);
  border-color: rgba(31,111,235,.25);
}

/* ============ Typography / Blocks ============ */
.h1{ font-size: clamp(28px, 4vw, 44px); line-height: 1.1; margin: 0 0 10px; }
.h2{ font-size: clamp(20px, 2.3vw, 28px); margin: 0 0 12px; }
.h3{ font-size: 16px; margin: 0 0 8px; }
.lede{ font-size: 16px; color: rgba(18,22,28,.88); max-width: 60ch; }
.fineprint{ font-size: 13px; color: var(--muted); margin: 12px 0 0; }

.section{ padding: 30px 0; }
.section-muted{ background: rgba(255,255,255,.55); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hero{ padding: 26px 0 10px; }
.page-hero{ padding: 26px 0 8px; }

/* ============ Layout grids ============ */
.hero-grid{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 22px;
  align-items: start;
}
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
}

.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 900px){
  .grid-3{ grid-template-columns: 1fr; }
}

.two-col{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
@media (max-width: 900px){
  .two-col{ grid-template-columns: 1fr; }
}

.card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: 0 1px 0 rgba(18,22,28,.03);
}

/* ============ Pills / Buttons / Callouts ============ */
.pill-row{ display:flex; flex-wrap:wrap; gap: 8px; margin-top: 10px; }
.pill{
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(31,111,235,.22);
  background: rgba(31,111,235,.08);
  color: rgba(18,22,28,.90);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(31,111,235,.35);
  background: rgba(31,111,235,.12);
  color: var(--ink);
  font-weight: 600;
  text-decoration:none;
}
.btn:hover{ background: rgba(31,111,235,.16); text-decoration:none; }
.btn-ghost{
  background: transparent;
  border-color: rgba(18,22,28,.18);
}
.btn-ghost:hover{ background: rgba(18,22,28,.04); }

.cta-row{ display:flex; gap: 10px; flex-wrap:wrap; margin-top: 14px; }

.callouts{ display:grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 16px; }
@media (max-width: 520px){ .callouts{ grid-template-columns: 1fr; } }
.callout{
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.72);
}
.callout-title{ font-weight: 700; font-size: 13px; margin-bottom: 4px; }
.callout-body{ color: var(--muted); font-size: 13px; }

/* ============ Prose / Code ============ */
.prose{ max-width: 78ch; }
.prose p{ margin: 0 0 12px; }
.prose ul, .prose ol{ margin: 0 0 12px 18px; }
.note{
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(31,111,235,.22);
  background: rgba(31,111,235,.07);
}
.notice{
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(180,35,24,.20);
  background: rgba(180,35,24,.06);
}
.code{
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(18,22,28,.03);
  padding: 12px;
  overflow:auto;
}
.code code{ font-family: var(--mono); font-size: 13px; }

/* ============ Accordion ============ */
.accordion{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.72);
  overflow: hidden;
}
.acc-q{
  width:100%;
  text-align:left;
  padding: 12px 14px;
  border: 0;
  border-top: 1px solid var(--line);
  background: transparent;
  font-family: inherit;
  font-size: 15px;
  font-weight: 650;
  cursor:pointer;
}
.acc-q:first-child{ border-top: 0; }
.acc-q:hover{ background: rgba(18,22,28,.03); }
.acc-q::after{
  content: "▾";
  float:right;
  opacity: .7;
}
.acc-q[aria-expanded="true"]::after{
  content: "▴";
}
.acc-a{
  padding: 0 14px 12px;
  color: rgba(18,22,28,.86);
}

/* ============ Terminal Chat ============ */
.terminal-card{
  border-radius: 22px;
  border: 1px solid rgba(18,22,28,.18);
  background: #0b0f14;
  box-shadow: var(--shadow);
  overflow:hidden;
}
.terminal-top{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: linear-gradient(180deg, rgba(255,255,255,.05), transparent);
}
.terminal-dots{ display:flex; gap: 6px; }
.terminal-dots span{
  width: 10px; height: 10px; border-radius: 999px;
  background: rgba(255,255,255,.14);
}
.terminal-title{
  color: rgba(255,255,255,.82);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .3px;
}
.terminal-badge{
  font-size: 12px;
  font-family: var(--mono);
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.78);
}

.terminal{
  height: 330px;
  overflow:auto;
  padding: 12px;
  font-family: var(--mono);
  font-size: 13px;
  color: rgba(255,255,255,.86);
  background:
    radial-gradient(900px 420px at 10% 0%, rgba(31,111,235,.10), transparent 60%),
    radial-gradient(900px 420px at 95% 0%, rgba(180,35,24,.08), transparent 55%),
    #0b0f14;
}
.msg{
  margin: 0 0 10px;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg .who{
  color: rgba(255,255,255,.55);
}
.msg.user .who{ color: rgba(31,111,235,.95); }
.msg.bot .who{ color: rgba(180,35,24,.88); }
.msg .text{ color: rgba(255,255,255,.88); }

.terminal-form{
  display:flex;
  gap: 10px;
  padding: 10px 12px 12px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.terminal-input{
  flex:1;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.92);
  padding: 10px 10px;
  font-family: var(--mono);
  font-size: 13px;
  outline: none;
}
.terminal-input:focus{
  border-color: rgba(31,111,235,.55);
  box-shadow: 0 0 0 3px rgba(31,111,235,.18);
}
.terminal-send{
  border-radius: 14px;
  border: 1px solid rgba(31,111,235,.55);
  background: rgba(31,111,235,.18);
  color: rgba(255,255,255,.92);
  font-weight: 700;
  padding: 10px 12px;
  cursor:pointer;
}
.terminal-send:hover{ background: rgba(31,111,235,.24); }

.terminal-foot{
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 10px;
  padding: 0 12px 12px;
}
.hint{
  color: rgba(255,255,255,.56);
  font-size: 12px;
  font-family: var(--mono);
}
.terminal-actions{ display:flex; gap: 10px; }
.linkish{
  border: 0;
  background: transparent;
  color: rgba(255,255,255,.78);
  font-family: var(--mono);
  cursor:pointer;
  padding: 6px 6px;
}
.linkish:hover{ color: rgba(255,255,255,.95); text-decoration: underline; }

/* ============ Footer ============ */
.site-footer{
  padding: 22px 0;
  border-top: 1px solid var(--line);
  background: rgba(255,255,255,.35);
}
.footer-row{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 18px;
  flex-wrap:wrap;
}
.footer-title{ font-weight: 800; }
.footer-sub{ font-size: 13px; color: var(--muted); margin-top: 2px; }
.footer-links{ display:flex; gap: 14px; flex-wrap:wrap; }
.footer-links a{ color: rgba(18,22,28,.85); }
.footer-links a:hover{ color: var(--accent); text-decoration:none; }

/* Screen reader only */
.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);
  border:0;
}