/* ── WhiteBox Design System — pixel-matched to design file ───────────────── */
:root {
  --bg:        #0a0a0a;
  --bg-2:      #0f0f0f;
  --bg-3:      #131313;
  --line:      #1c1c1c;
  --line-2:    #2a2a2a;
  --fg:        #e8e3d6;
  --fg-dim:    #b6b1a4;
  --fg-mute:   #6b6760;
  --fg-faint:  #3d3a35;
  --high:      oklch(0.78 0.13 145);
  --mid:       oklch(0.82 0.13 85);
  --low:       oklch(0.72 0.18 350);
  --human:     oklch(0.78 0.10 230);
  --grid-alpha: 0.06;
  --grain-alpha: 0.04;
  --display: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { background: var(--bg); color: var(--fg); }
body {
  margin: 0;
  font-family: var(--display);
  font-feature-settings: "ss01", "ss02", "calt", "zero";
  font-weight: 400;
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(to right, rgba(232,227,214,var(--grid-alpha)) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(232,227,214,var(--grid-alpha)) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 0%, transparent 70%);
}
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
  background-image: var(--grain-svg, none);
  opacity: var(--grain-alpha);
  mix-blend-mode: overlay;
}

#app { position: relative; z-index: 1; }
::selection { background: var(--fg); color: var(--bg); }

a { color: inherit; text-decoration: none; }
a:hover { color: var(--fg); }

@keyframes caret { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
.caret::after {
  content: "▌"; margin-left: 2px; color: var(--fg);
  animation: caret 1s steps(1) infinite;
}

/* Flash messages */
.flash { padding: 12px 20px; font-size: 13px; border-bottom: 1px solid var(--line-2); }
.flash.notice { background: rgba(255,255,255,0.04); color: var(--fg-dim); }
.flash.alert { background: rgba(255,50,50,0.08); color: var(--low); }

/* ── Button ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  font: inherit; color: var(--fg);
  background: transparent;
  border: 1px solid var(--line-2);
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
  text-decoration: none;
}
.btn:hover { background: var(--bg-3); border-color: var(--fg-mute); color: var(--fg); }
.btn.primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn.primary:hover { background: #fff; border-color: #fff; color: var(--bg); }
.btn .k { color: var(--fg-mute); }
.btn.primary .k { color: rgba(0,0,0,0.45); }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

/* ── Nav ───────────────────────────────────────────────────────────────────── */
nav.top {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--line);
}
nav.top .row { display: flex; align-items: center; justify-content: space-between; height: 56px; }
nav.top .links { display: flex; gap: 22px; color: var(--fg-dim); font-size: 13px; }
nav.top .links a:hover { color: var(--fg); }
nav.top .right { display: flex; align-items: center; gap: 12px; }

.status { display: flex; align-items: center; gap: 10px; color: var(--fg-mute); font-size: 12px; }
.status .pulse {
  width: 8px; height: 8px; background: var(--high);
  box-shadow: 0 0 0 0 var(--high);
  animation: pulse 1.6s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in oklab, var(--high) 50%, transparent); }
  70%  { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* ── Logo ──────────────────────────────────────────────────────────────────── */
.logo {
  font-family: var(--display); font-weight: 600; font-size: 14px;
  letter-spacing: 0.02em;
  display: inline-flex; align-items: baseline;
  color: var(--fg);
}
.logo .b { color: var(--fg-mute); transition: color 200ms ease; }
.logo:hover .b { color: var(--fg); }

/* ── Sections ──────────────────────────────────────────────────────────────── */
section { padding: 96px 0; position: relative; }
section + section { border-top: 1px dashed var(--line); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--fg-mute); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase;
}
.eyebrow .dot { width: 6px; height: 6px; background: var(--high); display: inline-block; box-shadow: 0 0 12px var(--high); }
.eyebrow .dot.amb { background: var(--mid); box-shadow: 0 0 12px var(--mid); }

/* ── Hero ──────────────────────────────────────────────────────────────────── */
section.hero { padding-top: 72px; padding-bottom: 56px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 48px; align-items: stretch;
}
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; } }

h1.display {
  font-family: var(--display); font-weight: 500;
  font-size: clamp(40px, 6.2vw, 92px);
  line-height: 0.96; letter-spacing: -0.02em;
  margin: 24px 0 0; text-wrap: balance;
}
h1.display .strike { color: var(--fg-mute); position: relative; }
h1.display .strike::after {
  content: "";
  position: absolute; left: -2%; right: -2%; top: 52%; height: 2px;
  background: var(--fg-mute);
}
h1.display em { font-style: normal; color: var(--fg); }

h2.section {
  font-family: var(--display); font-weight: 500;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.05; letter-spacing: -0.015em;
  margin: 14px 0 0; text-wrap: balance;
}

.hero-copy p.lede { color: var(--fg-dim); font-size: 17px; line-height: 1.55; max-width: 52ch; margin: 28px 0; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 36px;
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 14px; border-top: 1px dashed var(--line); padding-top: 18px;
}
.hero-meta .cell .k { color: var(--fg-mute); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.hero-meta .cell .v { color: var(--fg); font-size: 14px; margin-top: 4px; }

/* ── Terminal card ─────────────────────────────────────────────────────────── */
.term {
  background: linear-gradient(180deg, #0c0c0c 0%, #0a0a0a 100%);
  border: 1px solid var(--line-2);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03), 0 30px 60px -30px rgba(0,0,0,0.7);
  display: flex; flex-direction: column; overflow: hidden; min-height: 540px;
}
.term .head {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  background: #0d0d0d; font-size: 12px; color: var(--fg-mute);
}
.term .head .lights { display: flex; gap: 6px; margin-right: 6px; }
.term .head .lights span { width: 10px; height: 10px; border-radius: 50%; background: #2a2a2a; border: 1px solid #1a1a1a; }
.term .head .title { flex: 1; text-align: center; letter-spacing: 0.05em; }
.term .head .badge { border: 1px solid var(--line-2); padding: 2px 8px; font-size: 11px; color: var(--fg-dim); }
.term .body { padding: 18px 18px 14px; flex: 1; display: flex; flex-direction: column; gap: 14px; }
.term .prompt { color: var(--fg-mute); }
.term .prompt .you { color: var(--fg); }
.term .prompt .arg { color: var(--fg-dim); }

/* ── Confidence wave ───────────────────────────────────────────────────────── */
.wave { display: grid; grid-template-columns: 92px 1fr 84px; align-items: center; gap: 14px; }
.wave .label { color: var(--fg-dim); font-size: 12px; }
.wave .bars {
  display: grid; grid-template-columns: repeat(20, 1fr);
  gap: 3px; height: 28px;
}
.wave .bar {
  background: var(--fg-faint); height: 100%;
  transform-origin: center;
  transition: background 200ms ease;
}
.wave .bar.on { background: var(--high); }
.wave .bar.on.mid { background: var(--mid); }
.wave .bar.on.low { background: var(--low); }
.wave .num { font-variant-numeric: tabular-nums; text-align: right; color: var(--fg); font-size: 13px; }

@keyframes breathe {
  0%, 100% { transform: scaleY(0.96); opacity: 0.92; }
  50%       { transform: scaleY(1.06); opacity: 1.00; }
}
.wave.breathing .bar.on { animation: breathe 1.2s ease-in-out infinite; }
.wave.breathing .bar.on:nth-child(odd)  { animation-delay: -0.2s; }
.wave.breathing .bar.on:nth-child(3n)   { animation-delay: -0.4s; }
.wave.breathing .bar.on:nth-child(5n)   { animation-delay: -0.6s; }

/* ── Model run rows ────────────────────────────────────────────────────────── */
.runs { display: flex; flex-direction: column; gap: 6px; }
.run {
  display: grid; grid-template-columns: 22px 130px 1fr 80px;
  align-items: center; gap: 12px;
  font-size: 12.5px; color: var(--fg-dim);
}
.run .ix { color: var(--fg-mute); }
.run .model { color: var(--fg); }
.run .ans { color: var(--fg-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.run .lp  { color: var(--fg-mute); text-align: right; font-variant-numeric: tabular-nums; }
.run.match .ans { color: var(--fg); }
.run.match .lp  { color: var(--high); }
.run.miss  .lp  { color: var(--low); }

/* ── Verdict ───────────────────────────────────────────────────────────────── */
.verdict {
  display: grid; grid-template-columns: 1fr auto;
  align-items: center; gap: 16px;
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  background: #0d0d0d;
}
.verdict.high { border-color: color-mix(in oklab, var(--high) 35%, var(--line-2)); }
.verdict.mid  { border-color: color-mix(in oklab, var(--mid)  35%, var(--line-2)); }
.verdict.low  { border-color: color-mix(in oklab, var(--low)  45%, var(--line-2)); background: #120c10; }
.verdict .k { color: var(--fg-mute); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; }
.verdict .v { color: var(--fg); font-size: 16px; margin-top: 4px; }
.verdict .tag { padding: 4px 10px; border: 1px solid currentColor; font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; }
.verdict.high .tag { color: var(--high); }
.verdict.mid  .tag { color: var(--mid); }
.verdict.low  .tag { color: var(--low); }

/* ── HITL panel ────────────────────────────────────────────────────────────── */
.hitl {
  margin-top: 8px;
  border: 1px solid color-mix(in oklab, var(--human) 35%, var(--line-2));
  background: #0a0f14;
  padding: 12px 14px;
  color: var(--fg-dim); font-size: 12.5px;
  display: grid; grid-template-columns: 1fr auto;
  gap: 14px; align-items: center;
}
.hitl .h { color: var(--human); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.hitl .who { color: var(--fg); }
.hitl .who::before { content: "@"; color: var(--fg-mute); }
.hitl .countdown { color: var(--human); font-variant-numeric: tabular-nums; }

/* ── How it works ──────────────────────────────────────────────────────────── */
.how {
  display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px; align-items: start;
}
@media (max-width: 980px) { .how { grid-template-columns: 1fr; } }
.how h2 { margin-bottom: 18px; }
.how p  { color: var(--fg-dim); max-width: 56ch; font-size: 15px; line-height: 1.7; }

.steps { display: flex; flex-direction: column; }
.step {
  display: grid; grid-template-columns: 64px 1fr;
  gap: 16px; padding: 22px 0;
  border-top: 1px dashed var(--line);
}
.step:first-child { border-top: 1px solid var(--line-2); }
.step:last-child  { border-bottom: 1px solid var(--line-2); }
.step .ix { color: var(--fg-mute); font-size: 12px; letter-spacing: 0.1em; }
.step h4 { margin: 0 0 6px; font-weight: 500; font-size: 17px; color: var(--fg); }
.step p  { margin: 0; color: var(--fg-dim); font-size: 14px; max-width: 62ch; }

/* ── Playground ────────────────────────────────────────────────────────────── */
.pg {
  display: grid; grid-template-columns: 320px 1fr;
  gap: 0; border: 1px solid var(--line-2);
  background: #0c0c0c; overflow: hidden;
}
@media (max-width: 980px) { .pg { grid-template-columns: 1fr; } }
.pg .side {
  border-right: 1px solid var(--line); padding: 18px;
  display: flex; flex-direction: column; gap: 18px;
  background: #0a0a0a;
}
@media (max-width: 980px) { .pg .side { border-right: 0; border-bottom: 1px solid var(--line); } }
.pg .side h5 { margin: 0; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-mute); font-weight: 500; }
.pg .field { display: flex; flex-direction: column; gap: 6px; }
.pg .field label { font-size: 11px; color: var(--fg-mute); letter-spacing: 0.1em; text-transform: uppercase; }
.pg .input { background: #0f0f0f; border: 1px solid var(--line-2); padding: 10px 12px; font: inherit; color: var(--fg); }
.pg textarea.input { resize: vertical; min-height: 64px; }
.pg .input:focus { outline: 1px solid var(--fg-mute); }
.pg .chips { display: flex; gap: 6px; flex-wrap: wrap; }
.pg .chip { border: 1px solid var(--line-2); padding: 6px 9px; font-size: 12px; cursor: pointer; color: var(--fg-dim); }
.pg .chip:hover { color: var(--fg); border-color: var(--fg-mute); }
.pg .chip.on { color: var(--bg); background: var(--fg); border-color: var(--fg); }
.pg .out { padding: 22px 22px 18px; display: flex; flex-direction: column; gap: 18px; min-height: 480px; }
.pg .scroll {
  border: 1px solid var(--line); background: #090909;
  height: 220px; overflow: auto; padding: 12px 14px; font-size: 12.5px;
  scrollbar-width: thin; scrollbar-color: var(--line-2) transparent;
}
.pg .scroll .ln { color: var(--fg-dim); white-space: nowrap; }
.pg .scroll .ln .t  { color: var(--fg-mute); }
.pg .scroll .ln .ok { color: var(--high); }
.pg .scroll .ln .lo { color: var(--low); }
.pg .scroll .ln .am { color: var(--mid); }
.pg .scroll .ln .hu { color: var(--human); }
.pg-stat-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; padding-top: 6px; border-top: 1px dashed var(--line); }
.pg-stat .k { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-mute); }
.pg-stat .v { font-size: 14px; color: var(--fg); margin-top: 2px; }
@media (max-width: 600px) { .pg-stat-grid { grid-template-columns: repeat(2,1fr); } }

/* ── HITL section ──────────────────────────────────────────────────────────── */
.hitl-sec { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: start; }
@media (max-width: 980px) { .hitl-sec { grid-template-columns: 1fr; } }
.mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 460px; margin-top: 22px; }
.mini { border-top: 1px dashed var(--line); padding-top: 10px; }
.mini .k { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-mute); }
.mini .v { font-size: 18px; color: var(--fg); margin-top: 4px; }

/* ── Review card ───────────────────────────────────────────────────────────── */
.review { border: 1px solid var(--line-2); background: #0c0c0c; padding: 18px; }
.review .top {
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px dashed var(--line); padding-bottom: 12px; margin-bottom: 14px;
}
.review .top .id { color: var(--fg-mute); font-size: 12px; }
.review .top .pill {
  border: 1px solid color-mix(in oklab, var(--human) 35%, var(--line-2));
  color: var(--human); padding: 3px 8px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
}
.review .q { color: var(--fg); font-size: 16px; margin: 8px 0 14px; }
.review .options { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 14px; }
.opt {
  border: 1px solid var(--line-2); background: #0a0a0a;
  padding: 10px 12px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; transition: border-color 120ms ease, background 120ms ease;
}
.opt:hover { border-color: var(--fg-mute); }
.opt.picked { border-color: var(--human); background: #0a0f14; }
.opt .lbl { color: var(--fg); }
.opt .ai  { color: var(--fg-mute); font-size: 11px; }
.review .meta {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 10px;
  border-top: 1px dashed var(--line); padding-top: 12px;
}
.review .meta .c .k { font-size: 10px; color: var(--fg-mute); letter-spacing: 0.1em; text-transform: uppercase; }
.review .meta .c .v { color: var(--fg); font-size: 13px; margin-top: 2px; }

/* ── SDK section ───────────────────────────────────────────────────────────── */
.sdk { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: start; }
@media (max-width: 980px) { .sdk { grid-template-columns: 1fr; } }
.sdk ul { list-style: none; padding: 0; margin: 20px 0 0; color: var(--fg-dim); font-size: 14px; line-height: 1.9; }

.code { border: 1px solid var(--line-2); background: #0c0c0c; }
.tabs { display: flex; border-bottom: 1px solid var(--line); }
.tab { padding: 10px 14px; font-size: 12px; color: var(--fg-mute); border-right: 1px solid var(--line); cursor: pointer; user-select: none; }
.tab.on { color: var(--fg); background: #0a0a0a; }
.code pre {
  margin: 0; padding: 18px; font-size: 13px; line-height: 1.65;
  color: var(--fg-dim); white-space: pre; overflow: auto; max-height: 460px;
}
.code pre .kw { color: var(--fg); }
.code pre .st { color: oklch(0.78 0.13 145); }
.code pre .nu { color: oklch(0.82 0.13 85); }
.code pre .cm { color: var(--fg-mute); font-style: italic; }
.code pre .fn { color: var(--fg); }
.code pre .at { color: oklch(0.78 0.10 230); }

/* ── Features grid ─────────────────────────────────────────────────────────── */
.features {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0; border: 1px solid var(--line-2);
}
@media (max-width: 980px) { .features { grid-template-columns: 1fr; } }
.feat { padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feat:nth-child(3n) { border-right: 0; }
.features .feat:nth-last-child(-n+3) { border-bottom: 0; }
@media (max-width: 980px) {
  .feat { border-right: 0; }
  .features .feat:nth-last-child(-n+3) { border-bottom: 1px solid var(--line); }
  .features .feat:last-child { border-bottom: 0; }
}
.feat .k { color: var(--fg-mute); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
.feat h5 { margin: 8px 0 6px; font-weight: 500; font-size: 16px; }
.feat p  { margin: 0; color: var(--fg-dim); font-size: 13px; }

/* ── CTA ───────────────────────────────────────────────────────────────────── */
.cta { display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; padding: 80px 0 60px; }
.cta h2 { margin: 0; }
.cta p { color: var(--fg-dim); max-width: 56ch; margin: 4px 0 12px; }

/* ── Footer ────────────────────────────────────────────────────────────────── */
footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0;
}
footer.site-footer .footer-inner { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
footer.site-footer .footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px; margin-bottom: 40px;
}
@media (max-width: 800px) { footer.site-footer .footer-grid { grid-template-columns: 1fr 1fr; } }
footer.site-footer h4 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--fg-mute); margin: 0 0 12px; font-weight: 600; }
footer.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
footer.site-footer ul li a { font-size: 13px; color: var(--fg-mute); transition: color 120ms ease; }
footer.site-footer ul li a:hover { color: var(--fg); }
footer.site-footer .brand-desc { font-size: 13px; color: var(--fg-mute); margin-top: 8px; line-height: 1.6; }
footer.site-footer .footer-bottom {
  border-top: 1px dashed var(--line); padding-top: 20px;
  display: flex; flex-direction: column; gap: 12px;
}
@media (min-width: 600px) { footer.site-footer .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; } }
footer.site-footer .footer-bottom .mute { font-size: 12px; color: var(--fg-faint); }
footer.site-footer .footer-bottom .mute a { color: var(--fg-mute); transition: color 120ms ease; }
footer.site-footer .footer-bottom .mute a:hover { color: var(--fg); }
.stripe-badge { display: inline-flex; align-items: center; gap: 8px; font-size: 11px; color: var(--fg-faint); margin-top: 16px; }
.stripe-badge img { height: 18px; opacity: 0.4; filter: brightness(10); }

/* ── Vibe variants ─────────────────────────────────────────────────────────── */
body[data-vibe="terminal"]  { --grid-alpha: 0.10; }
body[data-vibe="editorial"] { --grid-alpha: 0.03; }
body[data-vibe="terminal"]  h1.display { font-weight: 400; }
body[data-vibe="editorial"] h1.display { font-weight: 300; font-size: clamp(46px, 7.4vw, 116px); letter-spacing: -0.03em; }
body[data-vibe="editorial"] section { padding: 130px 0; }