/* Agent Studio landing page. Brand faces from the font store: IBM Plex Sans (display), DM Sans (text). */
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/display.ttf") format("truetype"); font-weight: 100 700; font-display: swap; }
@font-face { font-family: "DM Sans"; src: url("fonts/text.ttf") format("truetype"); font-weight: 100 1000; font-display: swap; }

:root {
  --stage: #080808;
  --dark: #181818;
  --cream: #e8e6e2;
  --cream-2: #aaa8a5;      /* 7.5:1 on #181818, 8.6:1 on #080808 */
  --hair: rgba(232, 230, 226, 0.14);
  --hair-strong: rgba(232, 230, 226, 0.26);
  --orange: #ff6b2b;
  --ink: #160a04;
  --ink-2: rgba(22, 10, 4, 0.86);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --display: "IBM Plex Sans";
  --text: "DM Sans";
  --pad: clamp(20px, 6vw, 72px);
  /* type scale, one step per role */
  --t-hero: clamp(50px, 13.6vw, 168px);
  --t-h2: clamp(34px, 6.4vw, 88px);
  --t-said: clamp(26px, 4.2vw, 56px);
  --t-h3: clamp(21px, 2vw, 26px);
  --t-lede: clamp(18px, 1.7vw, 22px);
  --t-body: 17px;
  --t-label: 13px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--stage); color: var(--cream); font: 400 var(--t-body)/1.55 var(--text); overflow-x: hidden; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure, ol { margin: 0; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--cream); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 var(--pad); }
.skip { position: absolute; left: 12px; top: -60px; background: var(--cream); color: var(--ink); padding: 10px 14px; border-radius: 6px; z-index: 10; font-weight: 500; }
.skip:focus { top: 12px; }

.label { font: 500 var(--t-label)/1.2 var(--display); letter-spacing: 0.14em; text-transform: uppercase; color: var(--cream-2); }

/* Hero: the site's orange field, ink on it, the one gradient */
.hero {
  position: relative; color: var(--ink); min-height: clamp(560px, 92svh, 900px); display: flex; flex-direction: column;
  background: radial-gradient(120% 90% at 70% 38%, #ff9a4d 0%, #ff7a2f 38%, #ff6b2b 62%, #ff5f1f 84%, #f2521a 100%);
}
.hero :focus-visible { outline-color: var(--ink); }
.bar { display: flex; align-items: center; justify-content: space-between; padding-top: 28px; padding-bottom: 28px; }
.brand img { width: clamp(150px, 16vw, 210px); }
.bar-link { font: 500 15px/1 var(--text); text-decoration: none; padding: 10px 0; border-bottom: 1px solid rgba(22, 10, 4, 0.5); }
.bar-link:hover { border-bottom-color: var(--ink); }
.hero-body { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; padding-bottom: clamp(56px, 10vh, 112px); }
.hero .label { color: var(--ink-2); margin-bottom: clamp(18px, 3vh, 32px); }
h1 { font: 600 var(--t-hero)/0.92 var(--display); letter-spacing: -0.035em; max-width: 9.6em; text-wrap: balance; }
.direction {
  margin-top: clamp(28px, 5vh, 56px); max-width: 34em; font: 500 var(--t-lede)/1.4 var(--text); color: var(--ink);
  padding-top: 18px; border-top: 1px solid rgba(22, 10, 4, 0.34);
}
.caret { display: inline-block; width: 0.5em; height: 1.05em; margin-left: 0.12em; vertical-align: -0.18em; background: var(--ink); animation: blink 1.06s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* The two turns */
.turn { padding-top: clamp(72px, 12vh, 140px); }
.turn + .turn { padding-top: clamp(64px, 10vh, 120px); }
.step { display: flex; gap: 14px; align-items: baseline; margin-bottom: 22px; }
.step span { color: var(--orange); }
.said { font: 500 var(--t-said)/1.12 var(--display); letter-spacing: -0.02em; max-width: 21em; text-wrap: balance; }
.aside { margin-top: 24px; max-width: 34em; color: var(--cream-2); font-size: var(--t-lede); line-height: 1.5; }

.band { margin-top: clamp(36px, 6vh, 64px); }
.band-scroll { overflow-x: auto; border-radius: 10px; border: 1px solid var(--hair-strong); background: #1c1c1c; scrollbar-width: thin; }
.band-track { padding: 18px 18px 22px; min-width: 760px; }
.band-hint { display: none; margin-top: 10px; font-size: 14px; color: var(--cream-2); }
.band-tag { font: 500 var(--t-label)/1 var(--display); letter-spacing: 0.14em; text-transform: uppercase; color: var(--cream-2); margin: 0 0 10px; }
.band-track img { width: 100%; border-radius: 4px; }
.band-track img + .band-tag { margin-top: 22px; }
.band figcaption { margin-top: 20px; display: grid; gap: 8px; }
.reply { font: 400 var(--t-lede)/1.4 var(--display); color: var(--cream); }
.who { color: var(--cream-2); font-size: 15px; }

/* Statement */
.statement { margin-top: clamp(80px, 12vh, 150px); padding: clamp(64px, 10vh, 120px) 0; border-top: 1px solid var(--hair); border-bottom: 1px solid var(--hair); }
.statement h2 { font: 600 var(--t-h2)/0.98 var(--display); letter-spacing: -0.03em; }
.statement p { margin-top: 28px; max-width: 30em; font-size: var(--t-lede); color: var(--cream-2); }

/* Views */
.views { padding-top: clamp(72px, 12vh, 140px); display: grid; gap: clamp(28px, 4vw, 48px); }
.screen img { border-radius: 14px; border: 1px solid var(--hair-strong); }
.facts { display: grid; gap: 0; }
.facts article { padding: 26px 0; border-top: 1px solid var(--hair); }
.facts h3 { font: 600 var(--t-h3)/1.2 var(--display); letter-spacing: -0.01em; }
.facts p { margin-top: 10px; color: var(--cream-2); max-width: 34em; }

/* Layers */
.layers { padding-top: clamp(80px, 12vh, 150px); padding-bottom: clamp(80px, 12vh, 150px); display: grid; gap: 48px; }
.layers h2 { margin-top: 18px; font: 600 var(--t-h2)/0.98 var(--display); letter-spacing: -0.03em; }
.stack { list-style: none; padding: 0; display: grid; gap: 10px; }
.stack li { display: grid; grid-template-columns: 52px 1fr; column-gap: 16px; row-gap: 6px; padding: 22px 22px 24px; border: 1px solid var(--hair-strong); border-radius: 10px; background: var(--dark); }
.stack li:first-child { border-color: var(--orange); }
.lv { grid-row: span 2; font: 500 var(--t-label)/1.6 var(--display); letter-spacing: 0.14em; color: var(--cream-2); }
.stack li:first-child .lv { color: var(--orange); }
.ln { font: 600 var(--t-h3)/1.2 var(--display); }
.ld { color: var(--cream-2); }

/* Close: back on the orange field */
.close { color: var(--ink); background: radial-gradient(110% 120% at 30% 20%, #ff9a4d 0%, #ff7a2f 40%, #ff6b2b 70%, #ff5f1f 100%); }
.close-body { padding-top: clamp(88px, 14vh, 150px); padding-bottom: clamp(88px, 14vh, 150px); }
.close .label { color: var(--ink-2); }
.close h2 { margin-top: 18px; font: 600 var(--t-h2)/0.98 var(--display); letter-spacing: -0.03em; }
.close .lede { margin-top: 24px; max-width: 30em; font-size: var(--t-lede); color: var(--ink); }
.notify { margin-top: 40px; max-width: 560px; }
.notify label { display: block; font: 500 var(--t-label)/1 var(--display); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 10px; color: var(--ink-2); }
.field { display: flex; gap: 8px; }
.notify input {
  flex: 1; min-width: 0; height: 54px; padding: 0 16px; border-radius: 6px; border: 1px solid rgba(22, 10, 4, 0.55);
  background: rgba(255, 243, 233, 0.92); color: var(--ink); font: 400 17px var(--text);
}
.notify input::placeholder { color: #6b5a50; }
.notify input:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.notify button {
  height: 54px; padding: 0 22px; border-radius: 6px; border: 0; background: var(--ink); color: #fff3e9;
  font: 500 16px var(--text); cursor: pointer; transition: background-color 0.2s var(--ease);
}
.notify button:hover { background: #2c160b; }
.notify button:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.msg { min-height: 1.5em; margin-top: 12px; font-weight: 500; }
.is-error input { border: 2px solid var(--ink); }

/* Footer */
.foot { border-top: 1px solid var(--hair); }
.foot-body { padding-top: 40px; padding-bottom: 48px; display: flex; flex-wrap: wrap; gap: 20px 40px; align-items: center; justify-content: space-between; }
.foot img { width: 170px; }
.foot p { display: flex; flex-wrap: wrap; gap: 8px 28px; color: var(--cream-2); font-size: 15px; }
.foot a { text-decoration: none; border-bottom: 1px solid var(--hair-strong); }
.foot a:hover { border-bottom-color: var(--cream); }

@media (min-width: 900px) {
  .band-track { min-width: 0; }
  .facts { grid-template-columns: repeat(3, 1fr); gap: 40px; }
  .layers { grid-template-columns: 1fr 1.25fr; align-items: start; }
  .stack li { grid-template-columns: 64px 180px 1fr; }
  .lv { grid-row: auto; }
}
@media (max-width: 899px) {
  .band-hint { display: block; }
}
@media (max-width: 480px) {
  .field { flex-direction: column; }
  .notify input { flex: none; width: 100%; }
  .notify button { width: 100%; }
}

/* Entrances: the hero line first, then the direction, sharing one settle */
@media (prefers-reduced-motion: no-preference) {
  h1 { animation: rise 900ms var(--ease) both; }
  .hero .label { animation: rise 600ms var(--ease) 120ms both; }
  .direction { animation: rise 700ms var(--ease) 380ms both; }
  @keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .caret { animation: none; }
}