/* agterm.dev, Machine & Ink */

:root {
  color-scheme: dark;
  --bg: #0e0e0d;
  --surface: rgba(242, 240, 234, 0.035);
  --surface-hover: rgba(242, 240, 234, 0.06);
  --fg: #f2f0ea;
  --fg-2: rgba(242, 240, 234, 0.68);
  --fg-3: rgba(242, 240, 234, 0.45);
  --fg-4: rgba(242, 240, 234, 0.28);
  --border: rgba(242, 240, 234, 0.1);
  --border-strong: rgba(242, 240, 234, 0.22);
  --accent: #4c8dff;
  --accent-muted: rgba(76, 141, 255, 0.45);
  --ok: #4fbf85;
  --danger: #e5483a;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Geist", ui-sans-serif, system-ui, sans-serif;
  --serif: "Newsreader", Georgia, serif;
  --ease: cubic-bezier(0.2, 0, 0, 1);
  --wrap: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg: #f7f5ef;
    --surface: #ffffff;
    --surface-hover: rgba(22, 22, 26, 0.04);
    --fg: #16161a;
    --fg-2: rgba(22, 22, 26, 0.66);
    --fg-3: rgba(22, 22, 26, 0.45);
    --fg-4: rgba(22, 22, 26, 0.28);
    --border: rgba(22, 22, 26, 0.12);
    --border-strong: rgba(22, 22, 26, 0.24);
    --accent: #2f6fe0;
    --accent-muted: rgba(47, 111, 224, 0.4);
    --ok: #2e8b57;
    --danger: #c8352a;
  }
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f5ef;
  --surface: #ffffff;
  --surface-hover: rgba(22, 22, 26, 0.04);
  --fg: #16161a;
  --fg-2: rgba(22, 22, 26, 0.66);
  --fg-3: rgba(22, 22, 26, 0.45);
  --fg-4: rgba(22, 22, 26, 0.28);
  --border: rgba(22, 22, 26, 0.12);
  --border-strong: rgba(22, 22, 26, 0.24);
  --accent: #2f6fe0;
  --accent-muted: rgba(47, 111, 224, 0.4);
  --ok: #2e8b57;
  --danger: #c8352a;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
p, h1, h2, h3, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
a:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent-muted); outline-offset: 2px; }
code, kbd, pre { font-family: var(--mono); }
code {
  font-size: 0.86em; padding: 0.05em 0.35em;
  background: var(--surface); border: 1px solid var(--border);
  overflow-wrap: anywhere;
}
code.nw { white-space: nowrap; }
code.plain { padding: 0; background: none; border: 0; font-size: inherit; }
kbd {
  display: inline-block; min-width: 1.6em; padding: 0 0.35em;
  font-size: 0.82em; line-height: 1.6; text-align: center;
  color: var(--fg); border: 1px solid var(--border-strong);
}
a.inline { color: var(--accent); text-decoration: underline; text-decoration-color: var(--accent-muted); text-underline-offset: 3px; transition: text-decoration-color 150ms var(--ease); }
a.inline:hover { text-decoration-color: currentColor; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; top: 8px; padding: 8px 12px; background: var(--fg); color: var(--bg); font: 500 13px var(--sans); z-index: 10; }
.skip:focus { left: 8px; }

.label, .eyebrow {
  font: 500 12px/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-3);
}
.meta { font: 400 12px/1.6 var(--mono); color: var(--fg-3); font-variant-numeric: tabular-nums; }
.meta a { text-decoration: underline; text-decoration-color: var(--fg-4); text-underline-offset: 3px; }
.meta a:hover { color: var(--fg); text-decoration-color: currentColor; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 16px; font: 500 14px/1.2 var(--sans); white-space: nowrap;
  transition: opacity 150ms var(--ease), background-color 150ms var(--ease), border-color 150ms var(--ease);
}
.btn-primary { background: var(--fg); color: var(--bg); }
.btn-primary:hover { opacity: 0.86; }
.btn-ghost { border: 1px solid var(--border-strong); color: var(--fg); }
.btn-ghost:hover { background: var(--surface-hover); border-color: var(--fg-3); }
.btn-sm { padding: 6px 12px; font-size: 13px; }

/* Status marks */
.dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; flex: none; }
.dot-working { background: var(--accent); animation: pulse 1s steps(1) infinite; }
.dot-needs { background: var(--fg); }
.dot-done { background: var(--ok); }
.s-working { color: var(--accent); }
.s-needs { color: var(--fg); }
.s-done { color: var(--ok); }
@keyframes pulse { 50% { background: var(--accent-muted); } }

/* Top bar */
.top { border-bottom: 1px solid var(--border); }
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 60px; }
.mark { display: inline-flex; align-items: baseline; gap: 6px; font: 500 15px var(--mono); }
.mark-prompt { color: var(--fg-3); }
.top nav { display: flex; align-items: center; gap: 24px; font-size: 14px; }
.nav-links { display: flex; gap: 20px; }
.top nav a:not(.btn) { color: var(--fg-2); transition: color 150ms var(--ease); }
.top nav a:not(.btn):hover { color: var(--fg); }

/* Hero */
.hero { padding-top: clamp(32px, 5vw, 56px); padding-bottom: clamp(32px, 4vw, 48px); }
.eyebrow { display: flex; align-items: center; gap: 10px; }
.hero h1 {
  margin-top: 20px; max-width: 16ch;
  font: 500 clamp(36px, 7.4vw, 72px)/1.02 var(--mono);
  letter-spacing: -0.02em; text-transform: uppercase; text-wrap: balance;
}
.caret {
  display: inline-block; width: 0.09em; height: 0.82em; margin-left: 0.12em;
  background: var(--accent); vertical-align: -0.06em;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.lede {
  margin-top: 24px; max-width: 60ch;
  font: 400 clamp(18px, 2.1vw, 21px)/1.55 var(--serif); color: var(--fg-2);
}
.cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-meta { margin-top: 16px; }

/* Screenshot */
.shot { padding-bottom: clamp(40px, 6vw, 72px); }
.shot-link { display: block; }
.shot-link:focus-visible { outline: 2px solid var(--accent-muted); outline-offset: 2px; }
.shot img { width: 100%; border: 1px solid var(--border-strong); background: #0f0f0f; }
.shot figcaption { margin-top: 12px; max-width: 80ch; font: 400 12px/1.6 var(--mono); color: var(--fg-3); }

/* Sections */
.block { border-top: 1px solid var(--border); padding: clamp(40px, 5vw, 64px) 0; }
.sec-head { display: grid; gap: 12px; margin-bottom: clamp(24px, 3vw, 36px); }
.num { color: var(--accent); margin-right: 12px; }
.sec-head h2 {
  max-width: 26ch;
  font: 500 clamp(26px, 4.2vw, 40px)/1.08 var(--mono);
  letter-spacing: -0.01em; text-transform: uppercase; text-wrap: balance;
}
.sec-lede { margin-top: 20px; max-width: 62ch; font: 400 clamp(17px, 1.8vw, 19px)/1.6 var(--serif); color: var(--fg-2); }
.sec-lede kbd { font-size: 0.72em; vertical-align: 0.1em; }

/* Hairline grids */
.cells { display: grid; border-top: 1px solid var(--border); border-left: 1px solid var(--border); }
.cells > * { min-width: 0; padding: 24px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.cells-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cells-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cells-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cells h3 { font: 500 14px/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.02em; }
.cells h3 kbd { font-size: 0.9em; }
.cells p { margin-top: 10px; color: var(--fg-2); }
.footnote { margin-top: 16px; max-width: 86ch; font: 400 12px/1.7 var(--mono); color: var(--fg-3); }
.footnote code { font-size: 1em; }

/* 01 States */
.states img { width: 272px; border: 1px solid var(--border); margin-bottom: 20px; }
.states h3 { display: flex; align-items: center; gap: 10px; }

/* 02 Agents */
.agents {
  display: flex; flex-wrap: wrap; gap: 4px 0; margin-bottom: clamp(32px, 4vw, 48px);
  font: 400 clamp(18px, 2.3vw, 26px)/1.45 var(--mono); color: var(--fg-3); letter-spacing: -0.01em;
}
.agents li { white-space: nowrap; }
.agents li:not(:last-child)::after { content: "/"; margin: 0 0.5em; color: var(--fg-4); }
.agents .lead { color: var(--fg); }

/* 03 Steps */
.step { display: block; margin-bottom: 20px; font: 500 12px var(--mono); color: var(--accent); letter-spacing: 0.08em; }
.aside {
  display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 8px 32px;
  margin-top: 24px; padding: 20px 24px; background: var(--surface); border: 1px solid var(--border);
}
.aside p:not(.label) { max-width: 72ch; color: var(--fg-2); }

/* 04 Prompt */
.prompt-pair article { display: flex; flex-direction: column; }
.pane { margin-bottom: 24px; padding: 20px; background: #0f0f0f; border: 1px solid var(--border); }
.pane img { width: 495px; }
.timings { margin-bottom: 24px; border-top: 1px solid var(--border); }
.timings div {
  display: flex; justify-content: space-between; gap: 16px; padding: 10px 0;
  border-bottom: 1px solid var(--border); font: 400 13px var(--mono);
}
.timings dt { color: var(--fg-2); }
.timings dd { color: var(--fg); font-variant-numeric: tabular-nums; }

/* 06 Stats */
.stats dt { font: 500 12px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-3); }
.stats dd { margin-top: 10px; font: 500 clamp(28px, 4vw, 40px)/1 var(--mono); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.native-points { margin-top: clamp(32px, 4vw, 48px); }

/* 07 Install */
.install > div { padding: 28px; }
.install-steps { counter-reset: step; margin-bottom: 28px; }
.install-steps li { counter-increment: step; position: relative; padding: 0 0 16px 36px; color: var(--fg-2); }
.install-steps li::before {
  content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 0.2em;
  font: 500 12px var(--mono); color: var(--accent);
}
.install-meta { margin-top: 12px; }
.commands { margin-top: 20px; border-top: 1px solid var(--border); }
.commands div { padding: 14px 0; border-bottom: 1px solid var(--border); }
.commands dt code { font-size: 14px; color: var(--fg); }
.commands dd { margin-top: 6px; color: var(--fg-3); font-size: 14px; }

/* Footer */
.foot { border-top: 1px solid var(--border); padding: 28px 0 48px; }
.foot-row { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px 24px; }

/* Responsive */
/* Privacy policy */
.policy-title {
  max-width: 26ch;
  font: 500 clamp(26px, 4.2vw, 40px)/1.08 var(--mono);
  letter-spacing: -0.01em; text-transform: uppercase;
}
.prose { max-width: 68ch; }
.prose h2 { margin-top: 40px; font: 500 14px/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.02em; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose ul { margin-top: 12px; color: var(--fg-2); }
.prose ul { padding-left: 20px; list-style: square; }
.prose li + li { margin-top: 6px; }
.prose a { color: var(--fg); text-decoration: underline; text-decoration-color: var(--fg-4); text-underline-offset: 3px; }

@media (max-width: 960px) {
  .nav-links { display: none; }
  .cells-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .aside { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  .cells-2, .cells-3 { grid-template-columns: minmax(0, 1fr); }
  .install > div { padding: 24px 20px; }
}
@media (max-width: 480px) {
  .top nav { gap: 16px; }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .cells > * { padding: 20px 16px; }
  .stats > div { padding: 18px 16px; }
  .cta .btn { flex: 1 1 auto; }
  .pane { padding: 14px; }
  .aside { padding: 18px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .caret, .dot-working { animation: none; }
}