/* Lumio sales page and the side-by-side demo. Builds on lumio.css tokens. */

body.site {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }

/* nav */
.snav { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line-2); }
.snav .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.slogo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 20px; letter-spacing: -.03em; text-decoration: none; }
.slogo img { width: 28px; height: 28px; }
.snav nav { display: flex; gap: 22px; font-size: 14.5px; color: var(--ink-2); }
.snav nav a { text-decoration: none; }
.snav nav a:hover { color: var(--indigo-ink); }
.snav .btn { margin-left: auto; }

/* hero */
.hero { padding: 64px 0 40px; background: linear-gradient(180deg, var(--bg), var(--surface)); border-bottom: 1px solid var(--line-2); overflow: hidden; }
.stage { position: relative; min-height: 360px; max-width: 920px; }

.say { margin: 0 0 18px; display: flex; flex-direction: column; align-items: flex-start; }
.say small { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.say small i { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-style: normal; font-size: 10px; font-weight: 750; background: #E3E6EF; color: var(--ink-2); }
.say small i.ai { background: var(--indigo); color: #fff; }
.say small i.hu { background: var(--amber); color: #2A1A02; }

.q {
  padding: 12px 20px;
  border-radius: 22px 22px 22px 6px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: clamp(17px, 2vw, 21px);
  box-shadow: 0 8px 24px rgba(15, 24, 52, .06);
}

.a {
  max-width: 880px;
  margin: 0;
  font-size: clamp(32px, 5.2vw, 62px);
  line-height: 1.04;
  letter-spacing: -.04em;
  font-weight: 750;
  min-height: 2.1em;
}

.a .cur { display: inline-block; width: .08em; height: .9em; margin-left: .04em; background: var(--indigo); vertical-align: -.08em; animation: caret 1s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }
.a.human { color: var(--ink); }

.chips-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; min-height: 34px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 9px;
  background: var(--indigo-soft);
  color: var(--indigo-ink);
  font-size: 13.5px;
  font-weight: 600;
  animation: chip .35s cubic-bezier(.2, .8, .2, 1) both;
}

.chip.hu { background: var(--amber-soft); color: var(--amber-ink); }
.chip b { font-weight: 750; }
.chip em { font-style: normal; color: var(--muted); font-weight: 500; font-variant-numeric: tabular-nums; }
@keyframes chip { from { opacity: 0; transform: translateY(6px); } }

.hero-foot { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 30px; align-items: end; margin-top: 46px; padding-top: 28px; border-top: 1px solid var(--line); }
.hero-foot h1 { margin: 0; font-size: 19px; line-height: 1.45; font-weight: 500; color: var(--ink-2); max-width: 640px; letter-spacing: -.005em; }
.hero-foot h1 b { color: var(--ink); font-weight: 750; }
.ctas { display: flex; gap: 10px; flex-wrap: wrap; }
.btn.lg { padding: 13px 20px; font-size: 15px; border-radius: 12px; }

.scene-dots { position: absolute; right: 0; top: 4px; display: flex; gap: 6px; }
.scene-dots button { width: 34px; height: 6px; padding: 0; border: 0; border-radius: 3px; background: var(--line); cursor: pointer; }
.scene-dots button[aria-pressed="true"] { background: var(--ink); }

/* sections */
.sec { padding: 88px 0; border-bottom: 1px solid var(--line-2); }
.sec h2 { margin: 0 0 12px; font-size: clamp(28px, 3.6vw, 42px); line-height: 1.08; letter-spacing: -.035em; max-width: 720px; }
.sec .lead { margin: 0 0 40px; color: var(--ink-2); max-width: 640px; font-size: 17.5px; }

/* how it works */
.pipe { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)) minmax(0, 1.15fr); gap: 0; position: relative; }
.pstep { position: relative; padding: 0 22px 0 0; }
.pstep .n { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--ink); color: #fff; font-weight: 750; font-size: 14px; position: relative; z-index: 1; }
.pstep::before { content: ""; position: absolute; left: 34px; right: 0; top: 17px; height: 2px; background: var(--line); }
.pstep h3 { margin: 16px 0 6px; font-size: 17px; letter-spacing: -.015em; }
.pstep p { margin: 0; color: var(--ink-2); font-size: 14.5px; }
.pstep code { font-family: inherit; font-size: 13px; color: var(--indigo-ink); background: var(--indigo-soft); padding: 1px 6px; border-radius: 5px; }
.pstep.fork::before { display: none; }
.fork-box { display: grid; gap: 10px; margin-top: 14px; }
.fork-box div { padding: 12px 14px; border-radius: 12px; font-size: 14px; }
.fork-box .f-ai { background: var(--indigo-soft); color: var(--indigo-ink); }
.fork-box .f-hu { background: var(--amber-soft); color: var(--amber-ink); }
.fork-box b { display: block; color: var(--ink); font-size: 15px; }

/* rules showcase */
.split > * { min-width: 0; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 56px; align-items: center; }
.rulecards { display: grid; gap: 10px; }
.rc { display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; align-items: center; padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.rc p { margin: 0; font-size: 16px; font-weight: 600; letter-spacing: -.01em; }
.rc p span { color: var(--muted); font-weight: 500; }
.rc small { color: var(--muted); font-size: 13px; }
.rc .tag { grid-row: span 2; }
.rc.lock { border-color: #F2C1C9; background: #FFFBFC; }
.checks { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 30px; color: var(--ink-2); }
.checks li::before { content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 50%; background: var(--green-soft); }
.checks li::after { content: ""; position: absolute; left: 5px; top: 8px; width: 7px; height: 4px; border-left: 2px solid var(--green); border-bottom: 2px solid var(--green); transform: rotate(-45deg); }
.checks b { color: var(--ink); }

/* panel preview */
.browser { border-radius: 16px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 40px 90px rgba(15, 24, 52, .14); background: var(--surface); }
.browser-bar { display: flex; align-items: center; gap: 7px; height: 38px; padding: 0 14px; background: var(--bg); border-bottom: 1px solid var(--line); }
.browser-bar i { width: 10px; height: 10px; border-radius: 50%; background: #D6DAE4; }
.browser-bar span { margin-left: 14px; font-size: 12.5px; color: var(--muted); }
.browser-frame { position: relative; height: 620px; overflow: hidden; }
.browser-frame iframe { position: absolute; top: 0; left: 0; width: 1440px; height: 900px; border: 0; transform-origin: 0 0; }
.feature-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 40px; }
.feature-row h3 { margin: 0 0 6px; font-size: 17px; letter-spacing: -.015em; }
.feature-row p { margin: 0; color: var(--ink-2); font-size: 15px; }
.feature-row.four { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 0; }
.feature-row.four > div { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; padding-top: 18px; border-top: 2px solid var(--ink); }
.feature-row.four .btn { margin-top: 8px; }

/* integration */
.code {
  margin: 0;
  padding: 20px 22px;
  border-radius: 14px;
  background: var(--ink);
  color: #C9CEE0;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13.5px;
  line-height: 1.7;
  overflow-x: auto;
}

.code .t { color: #8F96FF; }
.code .s { color: #F2D79B; }
.code .c { color: #6E7796; }
.models { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.models span { padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); font-weight: 650; font-size: 14px; }

/* closing */
.closing { padding: 96px 0; background: var(--ink); color: #fff; }
.closing h2 { margin: 0 0 14px; font-size: clamp(30px, 4vw, 48px); letter-spacing: -.04em; line-height: 1.05; max-width: 720px; }
.closing p { margin: 0 0 30px; color: #B6BDD4; max-width: 560px; font-size: 17px; }
.closing .btn { border-color: rgba(255, 255, 255, .2); background: rgba(255, 255, 255, .06); color: #fff; }
.closing .btn.amber { background: var(--amber); color: #2A1A02; border-color: var(--amber); }
.sfoot { padding: 22px 0 90px; background: var(--ink); color: #7F87A3; font-size: 13px; border-top: 1px solid rgba(255, 255, 255, .08); }

/* ---------- side-by-side demo ---------- */

body.duo { margin: 0; height: 100vh; height: 100dvh; display: flex; flex-direction: column; background: var(--ink); font-family: var(--font); color: #fff; overflow: hidden; }
.duo-bar { display: flex; align-items: center; gap: 12px; padding: 10px 16px; flex-wrap: wrap; }
.duo-bar .slogo { color: #fff; font-size: 17px; }
.duo-bar .slogo img { width: 24px; height: 24px; }
.duo-bar p { margin: 0; color: #9AA2BD; font-size: 13px; }
.duo-bar .sp { flex: 1; }
.duo-scen { display: flex; gap: 6px; flex-wrap: wrap; }
.duo-scen button, .duo-tabs button, .duo-bar .lnk {
  padding: 7px 12px;
  border-radius: 9px;
  border: 1px solid rgba(255, 255, 255, .14);
  background: rgba(255, 255, 255, .05);
  color: #E7EAF4;
  font: inherit;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.duo-scen button:hover, .duo-bar .lnk:hover { background: rgba(255, 255, 255, .1); }
.duo-scen button i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 7px; }
.duo-grid { flex: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 10px; padding: 0 10px 10px; min-height: 0; }
.duo-grid.lens-on { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
.duo-pane { position: relative; display: flex; flex-direction: column; border-radius: 14px; overflow: hidden; background: #0B0F17; min-height: 0; }
.duo-pane header { display: flex; justify-content: space-between; align-items: center; padding: 8px 14px; font-size: 12.5px; color: #AEB5CC; background: rgba(255, 255, 255, .04); }
.duo-pane header b { color: #fff; font-weight: 650; }
.duo-pane iframe { flex: 1; width: 100%; border: 0; background: #fff; }
.duo-tabs { display: none; gap: 6px; padding: 0 10px 8px; }
.duo-tabs button[aria-pressed="true"] { background: #fff; color: var(--ink); }

/* responsive */
@media (max-width: 980px) {
  .snav nav { display: none; }
  .pipe { grid-template-columns: 1fr 1fr; gap: 30px 0; }
  .pstep.fork { grid-column: 1 / -1; }
  .split { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .feature-row, .feature-row.four { grid-template-columns: 1fr; gap: 20px; }
  .hero-foot { grid-template-columns: 1fr; }
  .browser-frame { height: 440px; }
  .duo-grid { grid-template-columns: 1fr; }
  .duo-tabs { display: flex; }
  .duo-grid .duo-pane { display: none; }
  .duo-grid .duo-pane.on { display: flex; }
  .duo-bar p { display: none; }
}

@media (max-width: 640px) {
  .hero { padding: 36px 0 28px; }
  .stage { min-height: 420px; }
  .sec { padding: 60px 0; }
  .pipe { grid-template-columns: 1fr; }
  .pstep::before { display: none; }
  .browser-frame { height: 360px; }
  .snav .btn { padding: 8px 12px; font-size: 13px; }
  .scene-dots { position: static; margin-bottom: 18px; }
  .duo-scen { width: 100%; overflow-x: auto; flex-wrap: nowrap; }
}

@media (prefers-reduced-motion: reduce) {
  .a .cur, .chip { animation: none; }
}