/* Exodrive's pages carry the window's own palette: graphite text on a cool
   paper, one violet for what a person acts on, amber for a cache that still
   takes space here, and teal for one that already moved. A state color means
   state and nothing else, so the two gauges read like the gauges in the app. */

:root {
  --paper: #f4f5f7;
  --surface: #ffffff;
  --inset: #eceef2;
  --ink: #1a1d23;
  --muted: #5d6470;
  --faint: #949ba6;
  --line: #dfe3e9;
  --accent: #5a4bc9;
  --accent-hover: #5041b7;
  --amber: #b4690e;
  --teal: #16705c;

  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --step-0: 1rem;
  --step-1: 1.2rem;
  --step-2: 1.5rem;
  --step-3: 2rem;
  --step-4: clamp(2.4rem, 5vw, 3.6rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121419;
    --surface: #1b1e25;
    --inset: #171a20;
    --ink: #e8eaee;
    --muted: #9ba2ad;
    --faint: #707784;
    --line: #2e333d;
    --accent: #a99bf5;
    --accent-hover: #b9adf8;
    --amber: #e0ac5c;
    --teal: #63c3a6;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.65;
  font-feature-settings: "kern";
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-hover);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

img,
svg {
  max-width: 100%;
}

/* ---- the page frame ---- */

.page {
  width: 100%;
  max-width: 62rem;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand .mark {
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 0.42rem;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
}

.top nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  font-size: 0.92rem;
}

.top nav a {
  color: var(--muted);
  text-decoration: none;
}

.top nav a:hover,
.top nav a[aria-current="page"] {
  color: var(--ink);
}

/* ---- hero ---- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 3rem;
  align-items: center;
  padding: 3.5rem 0 3rem;
}

.hero h1 {
  font-size: var(--step-4);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 0 0 1.1rem;
  max-width: 16ch;
}

.hero p {
  color: var(--muted);
  font-size: var(--step-1);
  max-width: 40ch;
  margin: 0 0 1.8rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.62rem 1.05rem;
  border-radius: 0.6rem;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 550;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
}

.button:hover {
  background: var(--accent-hover);
  color: #fff;
}

.button.quiet {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.button.quiet:hover {
  border-color: var(--faint);
  color: var(--ink);
}

.note {
  margin: 0.9rem 0 0;
  font-size: 0.88rem;
  color: var(--faint);
}

/* The gauges: the same pair the window shows, at the size a page can hold. */

.gauges {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.4rem 1.4rem 1.1rem;
  display: grid;
  gap: 1.1rem;
}

.gauge-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.86rem;
  color: var(--muted);
}

.gauge-head strong {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.bar {
  height: 0.55rem;
  border-radius: 999px;
  background: var(--inset);
  overflow: hidden;
  display: flex;
  margin-top: 0.45rem;
}

.bar span {
  display: block;
  height: 100%;
}

.bar .cache {
  background: var(--amber);
}

.bar .away {
  background: var(--teal);
}

.legend {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.legend i {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  display: inline-block;
}

.arrow {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--faint);
  font-size: 0.82rem;
}

.arrow::before,
.arrow::after {
  content: "";
  height: 1px;
  background: var(--line);
  flex: 1;
}

/* ---- sections ---- */

section {
  padding: 3rem 0;
  border-top: 1px solid var(--line);
}

section h2 {
  font-size: var(--step-2);
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 0.6rem;
}

section > p {
  color: var(--muted);
  max-width: 62ch;
  margin: 0 0 1.6rem;
}

.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.1rem;
  max-width: 58ch;
}

.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 1.9rem 1fr;
  gap: 0.2rem 0.9rem;
  align-items: baseline;
}

.steps li::before {
  content: counter(step);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 999px;
  background: var(--inset);
  display: grid;
  place-items: center;
}

.steps b {
  font-weight: 600;
}

.steps p {
  margin: 0.15rem 0 0;
  color: var(--muted);
  grid-column: 2;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 0.7rem 0.9rem 0.7rem 0;
  border-bottom: 1px solid var(--line);
}

th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.82rem;
  letter-spacing: 0.01em;
}

tbody tr:last-child td {
  border-bottom: none;
}

code,
pre {
  font-family: var(--mono);
  font-size: 0.86em;
}

code {
  background: var(--inset);
  padding: 0.12em 0.38em;
  border-radius: 0.28rem;
}

pre {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.6;
}

pre code {
  background: none;
  padding: 0;
}

.promise {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
}

.promise div {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 1rem 1.1rem;
}

.promise h3 {
  margin: 0 0 0.35rem;
  font-size: 0.98rem;
}

.promise p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

footer {
  border-top: 1px solid var(--line);
  padding-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  color: var(--faint);
  font-size: 0.86rem;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
}

footer a {
  color: var(--muted);
  text-decoration: none;
}

footer a:hover {
  color: var(--ink);
}

/* ---- documentation ---- */

.docs {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: 3rem;
  padding-top: 2.5rem;
}

.docs nav {
  position: sticky;
  top: 1.5rem;
  align-self: start;
  font-size: 0.9rem;
  display: grid;
  gap: 0.35rem;
}

.docs nav a {
  color: var(--muted);
  text-decoration: none;
}

.docs nav a:hover {
  color: var(--ink);
}

.docs h1 {
  font-size: var(--step-3);
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
}

.docs h2 {
  font-size: var(--step-1);
  margin: 2.2rem 0 0.5rem;
  scroll-margin-top: 1.5rem;
}

.docs h3 {
  font-size: 1rem;
  margin: 1.4rem 0 0.3rem;
}

.docs p,
.docs li {
  color: var(--muted);
}

.docs ul {
  padding-left: 1.1rem;
}

.docs li + li {
  margin-top: 0.3rem;
}

.docs strong {
  color: var(--ink);
}

.callout {
  border-left: 3px solid var(--amber);
  background: var(--surface);
  padding: 0.8rem 1rem;
  border-radius: 0 0.6rem 0.6rem 0;
}

.callout p {
  margin: 0;
}

@media (max-width: 54rem) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 2.5rem;
  }

  .docs {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .docs nav {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--line);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .gauges .bar span {
    transition: width 0.6s ease-out;
  }
}