/* Agent Driver — agentdriver.build. Warm paper palette, serif display type. */
:root {
  --bg: #f5f0e8;          /* page: warm beige */
  --bg-2: #efe8dc;        /* alternate band */
  --paper: #fbf8f2;       /* cards */
  --paper-2: #f3ede2;     /* insets */
  --border: #e2d9ca;
  --border-2: #d6cab6;
  --text: #1f1e1c;
  --text-2: #4d4840;
  --muted: #7d766b;
  --clay: #c96442;        /* accent */
  --clay-hover: #b5573a;
  --clay-soft: #f2dccf;
  --clay-ink: #fffaf5;
  --green: #5e8c61;
  --amber: #b9842f;
  --ink: #1f1e1c;         /* dark terminal */
  --ink-2: #2a2825;
  --ink-text: #e9e3d8;
  --ink-muted: #a39b8d;
  --serif: "Source Serif 4", "Tiempos Headline", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", SFMono-Regular, ui-monospace, Menlo, Consolas, monospace;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16.5px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--clay); text-underline-offset: 3px; }
a:hover { color: var(--clay-hover); }
b { font-weight: 600; color: var(--text); }
code { font-family: var(--mono); font-size: .84em; background: var(--paper-2); border: 1px solid var(--border); padding: 1px 6px; border-radius: 6px; color: var(--text); overflow-wrap: anywhere; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* Top bar */
.top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(245, 240, 232, .86);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}
.top .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-family: var(--serif); font-weight: 600; font-size: 20px; letter-spacing: -.01em; }
.brand:hover { color: var(--text); }
.brand img { border-radius: 7px; }
.top nav { display: flex; gap: 26px; margin-left: auto; }
.top nav a { color: var(--text-2); text-decoration: none; font-size: 15px; }
.top nav a:hover { color: var(--text); }
.signin {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: 10px;
  background: var(--ink); color: var(--clay-ink);
  text-decoration: none; font-weight: 600; font-size: 15px;
}
.signin:hover { background: #000; color: #fff; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: 12px;
  font-size: 16.5px; font-weight: 600; text-decoration: none;
  transition: background .15s, border-color .15s;
}
.btn.primary { background: var(--clay); color: var(--clay-ink); }
.btn.primary:hover { background: var(--clay-hover); color: var(--clay-ink); }
.btn.ghost { color: var(--text); border: 1px solid var(--border-2); background: var(--paper); }
.btn.ghost:hover { border-color: var(--text-2); color: var(--text); }
.btn:focus-visible, .signin:focus-visible, .copy:focus-visible { outline: 3px solid var(--clay); outline-offset: 3px; }

/* Hero */
.hero { padding: 96px 0 72px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 5px 14px; border: 1px solid var(--border-2); border-radius: 999px; color: var(--text-2); font-size: 14px; background: var(--paper); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--clay); }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; color: var(--text); }
h1 { margin: 24px auto 0; max-width: 13em; font-size: clamp(42px, 6.6vw, 72px); line-height: 1.04; letter-spacing: -.025em; }
h1 em { font-style: italic; color: var(--clay); }
.lede { margin: 22px auto 34px; max-width: 34em; font-size: 19px; color: var(--text-2); }
.ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.fine { color: var(--muted); font-size: 14px; }
.hero .fine { margin: 16px 0 0; }

/* Hero visual: three devices, one agent */
.devices { margin: 64px auto 0; display: grid; grid-template-columns: 1.35fr 1fr .62fr; gap: 18px; align-items: end; max-width: 980px; text-align: left; }
.dev { background: var(--paper); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; box-shadow: 0 1px 2px rgba(60, 45, 25, .05), 0 24px 48px -28px rgba(60, 45, 25, .28); }
.dev-bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--paper-2); font-size: 12.5px; color: var(--muted); }
.dev-bar .lights { display: flex; gap: 6px; }
.dev-bar .lights i { width: 10px; height: 10px; border-radius: 50%; background: var(--border-2); }
.dev-bar .where { margin-left: auto; font-family: var(--mono); font-size: 11.5px; }
.dev-body { padding: 14px; font-size: 13.5px; }
.mac .dev-body { display: grid; grid-template-columns: 136px 1fr; gap: 14px; padding: 0; }
.side { border-right: 1px solid var(--border); padding: 12px 10px; font-size: 12.5px; color: var(--text-2); background: var(--paper-2); }
.side h4 { margin: 0 0 6px; font-size: 10.5px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); font-weight: 600; }
.side div { display: flex; align-items: center; gap: 7px; padding: 4px 6px; border-radius: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.side div.on { background: var(--paper); color: var(--text); box-shadow: 0 0 0 1px var(--border); }
.side .s { width: 7px; height: 7px; border-radius: 50%; flex: none; background: var(--border-2); }
.s.work { background: var(--clay); }
.s.idle { background: var(--green); }
.s.block { background: var(--amber); }
.chat { padding: 12px 14px 14px 0; display: flex; flex-direction: column; gap: 8px; }
.msg { padding: 8px 11px; border-radius: 12px; max-width: 92%; color: var(--text-2); }
.msg.me { align-self: flex-end; background: var(--paper-2); border: 1px solid var(--border); color: var(--text); }
.tool { font-family: var(--mono); font-size: 11.5px; color: var(--muted); border: 1px solid var(--border); background: var(--paper-2); border-radius: 8px; padding: 6px 9px; }
.tool b { color: var(--green); font-weight: 600; }
.server { background: var(--ink); border-color: var(--ink-2); }
.server .dev-bar { background: var(--ink-2); border-bottom-color: #36332e; color: var(--ink-muted); }
.server .dev-bar .lights i { background: #48443d; }
.term { font-family: var(--mono); font-size: 11.5px; line-height: 1.7; color: var(--ink-text); white-space: pre; overflow: hidden; }
.term .p { color: #e8a184; }
.term .ok { color: #9cc79e; }
.phone-dev { border-radius: 26px; }
.phone-dev .dev-bar { justify-content: center; background: var(--paper); border-bottom: 0; }
.phone-dev .notch { width: 54px; height: 6px; border-radius: 6px; background: var(--border-2); }
.ask { margin-top: 10px; border: 1px solid #e6c9a0; background: #faf0e0; border-radius: 12px; padding: 9px 10px; font-size: 12.5px; color: var(--text-2); }
.ask .row { display: flex; gap: 6px; margin-top: 8px; }
.ask .row span { flex: 1; text-align: center; padding: 5px 0; border-radius: 8px; background: var(--paper); border: 1px solid var(--border); font-weight: 600; font-size: 12px; color: var(--text); }
.ask .row span.yes { background: var(--clay); border-color: var(--clay); color: var(--clay-ink); }

/* Sections */
section { padding: 88px 0; }
section:nth-of-type(even) { background: var(--bg-2); }
section + section { border-top: 1px solid var(--border); }
.kicker { color: var(--clay); font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; margin: 0 0 12px; }
h2 { margin: 0 0 16px; font-size: clamp(30px, 4vw, 44px); line-height: 1.1; letter-spacing: -.02em; max-width: 18em; }
.sub { margin: 0 0 40px; max-width: 38em; color: var(--text-2); font-size: 18px; }
h3 { margin: 0 0 6px; font-size: 21px; letter-spacing: -.005em; line-height: 1.25; }

.grid { display: grid; gap: 18px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--paper); border: 1px solid var(--border); border-radius: 16px; padding: 26px; }
.card p { margin: 0; color: var(--text-2); }
.card .ico { width: 42px; height: 42px; border-radius: 12px; background: var(--clay-soft); display: grid; place-items: center; color: var(--clay); margin-bottom: 18px; }
.card .ico svg { width: 22px; height: 22px; }

/* Screenshots (filled in when the product shots arrive) */
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.shots figure { margin: 0; background: var(--paper); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
.shots img { display: block; width: 100%; height: auto; }
.shots figcaption { padding: 12px 16px; color: var(--text-2); font-size: 14.5px; }

/* Setup steps */
ol.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: 14px; }
ol.steps > li { counter-increment: step; position: relative; padding: 22px 24px 22px 76px; background: var(--paper); border: 1px solid var(--border); border-radius: 14px; }
ol.steps > li::before {
  content: counter(step);
  position: absolute; left: 24px; top: 21px;
  width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--clay-soft); color: var(--clay);
  font: 500 17px var(--serif);
}
ol.steps h3 { font-size: 19px; }
ol.steps p { margin: 0; color: var(--text-2); }
.note { margin-top: 10px !important; border-left: 3px solid var(--clay); padding: 2px 0 2px 12px; font-size: 15px; }

/* Phone */
.split { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.qr { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 10px; line-height: 0; box-shadow: 0 18px 40px -26px rgba(60, 45, 25, .35); }
.qr svg { width: 184px; height: 184px; }
.phone-link { display: none; }

/* Linux */
.code { position: relative; }
pre {
  margin: 0 0 16px; padding: 20px 22px;
  background: var(--ink); border: 1px solid var(--ink-2); border-radius: 14px;
  overflow-x: auto;
}
.code pre { padding-right: 88px; }
pre code { background: none; border: 0; padding: 0; font-size: 13.5px; line-height: 1.7; color: var(--ink-text); overflow-wrap: normal; }
.copy {
  position: absolute; top: 12px; right: 12px;
  padding: 6px 12px; border-radius: 8px; border: 1px solid #48443d;
  background: var(--ink-2); color: var(--ink-text); font: 600 13px var(--sans); cursor: pointer;
}
.copy:hover { border-color: var(--clay); }

details.sum { font-size: 13px; color: var(--muted); margin-top: 6px; }
details.sum summary { cursor: pointer; display: inline-block; }

/* FAQ */
.faq { display: grid; gap: 0; max-width: 820px; border-top: 1px solid var(--border-2); }
.faq details { border-bottom: 1px solid var(--border-2); padding: 20px 4px; }
.faq summary { cursor: pointer; font-family: var(--serif); font-weight: 500; font-size: 21px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--clay); font: 300 26px/1 var(--sans); }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 12px 0 0; color: var(--text-2); max-width: 44em; }

/* Final CTA + footer */
.final { text-align: center; }
.final h2 { margin-left: auto; margin-right: auto; }
.final .sub { margin-left: auto; margin-right: auto; }
footer { border-top: 1px solid var(--border); padding: 32px 0 calc(32px + env(safe-area-inset-bottom)); color: var(--muted); font-size: 14px; background: var(--bg); }
footer .wrap { display: flex; gap: 16px 24px; flex-wrap: wrap; align-items: center; }
footer .brand { font-size: 17px; }
footer a { color: var(--text-2); text-decoration: none; }
footer a:hover { color: var(--text); }
footer .right { margin-left: auto; display: flex; gap: 22px; }

@media (max-width: 900px) {
  .devices { grid-template-columns: 1fr 1fr; }
  .devices .mac { grid-column: 1 / -1; }
  .grid.three { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .top nav { display: none; }
  .top .signin { margin-left: auto; }
  .hero { padding: 60px 0 48px; }
  .lede { font-size: 17px; }
  .devices { grid-template-columns: 1fr; }
  .devices .server { display: none; }
  .mac .dev-body { grid-template-columns: 1fr; }
  .side { display: none; }
  .chat { padding: 12px 14px; }
  section { padding: 60px 0; }
  ol.steps > li { padding: 18px 16px 18px 62px; }
  ol.steps > li::before { left: 16px; top: 18px; }
  .split { grid-template-columns: 1fr; }
  .qr { display: none; }
  .phone-link { display: inline-flex; margin-top: 8px; }
  footer .right { margin-left: 0; }
}