:root {
  color-scheme: dark;

  --bg: #0a0c0f;
  --bg-elev: #0f1217;
  --bg-raised: #141820;
  --border: #1e242d;
  --border-strong: #2a313c;

  --fg: #e7ecf2;
  --fg-dim: #aab2bd;
  --fg-muted: #6b7480;
  --fg-faint: #464f5a;

  --accent: #d4a45a;
  --accent-dim: #b0864a;
  --accent-ghost: rgba(212, 164, 90, 0.14);
  --accent-contrast: #1a1305;

  --ok: #6cc38f;
  --err: #e06c6c;
  --warn: #d4a45a;
  --info: #7ca8d1;

  --bg-glow-a: rgba(212, 164, 90, 0.06);
  --bg-glow-b: rgba(124, 168, 209, 0.04);

  --logo-invert: 1;

  --mono:
    "JetBrains Mono", "Berkeley Mono", "IBM Plex Mono", ui-monospace,
    SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --radius: 6px;
  --radius-lg: 10px;

  --fs-base: 15px;
  --lh-base: 1.65;

  --col-narrow: 58rem;
  --col-wide: 78rem;

  --dur: 200ms;
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

:root[data-theme="light"] {
  color-scheme: light;

  --bg: #f6f3ec;
  --bg-elev: #fbf8f1;
  --bg-raised: #ece7da;
  --border: #d9d2c2;
  --border-strong: #bfb59e;

  --fg: #15181c;
  --fg-dim: #4a5058;
  --fg-muted: #70767f;
  --fg-faint: #a5aab2;

  --accent: #8a5f14;
  --accent-dim: #a07522;
  --accent-ghost: rgba(138, 95, 20, 0.10);
  --accent-contrast: #fbf8f1;

  --ok: #2b7a4b;
  --err: #b23f3f;
  --warn: #8a5f14;
  --info: #2c6a96;

  --bg-glow-a: rgba(138, 95, 20, 0.07);
  --bg-glow-b: rgba(44, 106, 150, 0.05);

  --logo-invert: 0;
}

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

html {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(
      1200px 600px at 80% -200px,
      var(--bg-glow-a),
      transparent 60%
    ),
    radial-gradient(
      900px 500px at 10% 10%,
      var(--bg-glow-b),
      transparent 60%
    ),
    var(--bg);
  overflow-x: hidden;
  transition: background-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

p {
  margin: 0;
}

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 0.75rem;
  background: var(--bg-raised);
  color: var(--fg);
  z-index: 100;
}
.skip:focus {
  left: 0.5rem;
  top: 0.5rem;
}

/* ----------------------------- Nav ----------------------------- */

.nav {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 1.5rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--fg);
  border-bottom: 0;
}
.nav__brand:hover {
  color: var(--fg);
}

.nav__logo {
  width: 22px;
  height: 22px;
  filter: invert(var(--logo-invert));
  opacity: 0.92;
}

.nav__wordmark {
  font-weight: 500;
  letter-spacing: 0.02em;
}

.nav__links {
  display: inline-flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  color: var(--fg-dim);
}
.nav__links a {
  color: var(--fg-dim);
}
.nav__links a:hover {
  color: var(--fg);
  border-bottom-color: transparent;
}

.nav__github {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
  color: var(--fg-dim);
  transition: background var(--dur) var(--ease),
    border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.theme-toggle:hover {
  border-color: var(--border-strong);
  color: var(--accent);
}
.theme-toggle svg {
  width: 14px;
  height: 14px;
}
.theme-toggle__moon {
  display: none;
}
:root[data-theme="light"] .theme-toggle__sun {
  display: none;
}
:root[data-theme="light"] .theme-toggle__moon {
  display: block;
}

/* ----------------------------- Hero ----------------------------- */

.hero {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 4rem;
  align-items: start;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elev);
  color: var(--fg-muted);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  margin-bottom: 1.75rem;
  text-transform: lowercase;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px rgba(108, 195, 143, 0.55);
}

.hero__title {
  font-size: clamp(2rem, 4.8vw, 3.25rem);
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}

.hero__content {
  max-width: 42rem;
}

.hero__lede {
  font-size: 1.05rem;
  color: var(--fg-dim);
  margin-bottom: 2.5rem;
}

.install {
  max-width: 42rem;
}

.install__label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 0.6rem;
}

.install__row {
  display: flex;
  align-items: stretch;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.install__row:hover {
  border-color: var(--border-strong);
}

.install__cmd {
  flex: 1;
  padding: 0.95rem 1rem;
  font-size: 0.95rem;
  color: var(--fg);
  background: transparent;
  white-space: nowrap;
  overflow-x: auto;
}

.install__prompt {
  color: var(--fg-muted);
  margin-right: 0.6rem;
  user-select: none;
}

.install__copy {
  position: relative;
  padding: 0 1.1rem;
  border: 0;
  border-left: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--fg-dim);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  min-width: 5.5rem;
}
.install__copy:hover {
  background: var(--border);
  color: var(--accent);
}

.install__copy-done {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--ok);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.install__copy.is-copied .install__copy-default {
  opacity: 0;
}
.install__copy.is-copied .install__copy-done {
  opacity: 1;
}

.install__secondary {
  margin-top: 1rem;
  font-size: 0.88rem;
  color: var(--fg-muted);
}
.install__secondary a {
  color: var(--fg-dim);
}
.install__secondary a:hover {
  color: var(--accent);
}

/* ---------------------------- Terminal --------------------------- */

.terminal {
  /* Terminal keeps its dark palette regardless of the page theme — it's a
     "terminal window" metaphor that reads as a distinct surface in both
     modes. Overriding these tokens inside .terminal cascades to every
     child rule. */
  --bg-elev: #0f1217;
  --bg-raised: #141820;
  --border: #1e242d;
  --fg: #e7ecf2;
  --fg-dim: #aab2bd;
  --fg-muted: #6b7480;
  --fg-faint: #464f5a;
  --accent: #d4a45a;
  --ok: #6cc38f;
  --err: #e06c6c;
  --warn: #d4a45a;
  --info: #7ca8d1;

  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #0d1015 0%, #0a0c10 100%);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.02) inset,
    0 20px 60px -20px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.015);
  overflow: hidden;
  min-width: 0;
}

.terminal__chrome {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
}

.terminal__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--fg-faint);
}
.terminal__dot[data-color="r"] {
  background: #e06c6c;
}
.terminal__dot[data-color="y"] {
  background: #d4a45a;
}
.terminal__dot[data-color="g"] {
  background: #6cc38f;
}

.terminal__title {
  margin-left: auto;
  color: var(--fg-muted);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

.terminal__body {
  margin: 0;
  padding: 1.1rem 1.25rem 1.4rem;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--fg-dim);
  height: 32rem;
  overflow: hidden;
}

.term-line {
  display: block;
  white-space: pre;
  min-height: 1lh;
  opacity: 0;
  transform: translateY(2px);
  transition: opacity 160ms var(--ease), transform 160ms var(--ease);
}
.term-line.is-visible {
  opacity: 1;
  transform: none;
}

.term-line[data-kind="cmd"] {
  color: var(--fg);
}
.term-line[data-kind="ok"] {
  color: var(--fg-dim);
}
.term-line[data-kind="err"] {
  color: var(--err);
}
.term-line[data-kind="warn"] {
  color: var(--warn);
}
.term-line[data-kind="info"] {
  color: var(--info);
}
.term-line[data-kind="muted"] {
  color: var(--fg-muted);
}
.term-line[data-kind="done"] {
  color: var(--ok);
}

.tm-prompt {
  color: var(--fg-muted);
  margin-right: 0.35rem;
}
.tm-ok {
  color: var(--ok);
}
.tm-err {
  color: var(--err);
}
.tm-warn {
  color: var(--warn);
}
.tm-info {
  color: var(--info);
}
.tm-muted {
  color: var(--fg-muted);
}
.tm-dim {
  color: var(--fg-faint);
}
.tm-accent {
  color: var(--accent);
}

.term-cursor {
  display: inline-block;
  width: 0.55ch;
  height: 1em;
  vertical-align: -0.12em;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
  margin-left: 2px;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .term-line {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .term-cursor {
    animation: none;
  }
}

/* --------------------------- Section header --------------------------- */

.section-header {
  max-width: var(--col-narrow);
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}

.section-header__eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.section-header__title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-bottom: 0.9rem;
}

.section-header__lede {
  color: var(--fg-dim);
  font-size: 1rem;
}

/* --------------------------- Scenarios --------------------------- */

.scenarios {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}

.scenarios__grid {
  max-width: var(--col-narrow);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.scenario {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}
.scenario:hover {
  border-color: var(--border-strong);
}

.scenario__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 1.4rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), transparent);
}

.scenario__num {
  font-size: 0.8rem;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
}

.scenario__title {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--fg);
}

.scenario__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.scenario__col {
  padding: 1.25rem 1.4rem 1.5rem;
  color: var(--fg-dim);
  font-size: 0.94rem;
}

.scenario__col + .scenario__col {
  border-left: 1px solid var(--border);
}

.scenario__col[data-state="with"] {
  background: linear-gradient(
    180deg,
    rgba(212, 164, 90, 0.04),
    rgba(212, 164, 90, 0.0) 80%
  );
}

.scenario__label {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 0.7rem;
}

.scenario__col[data-state="with"] .scenario__label {
  color: var(--accent);
}

.pillars {
  max-width: var(--col-narrow);
  margin: 3rem auto 0;
  padding: 0 1.5rem;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
}

.pillars li {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  background: var(--bg-elev);
  color: var(--fg-dim);
  font-size: 0.85rem;
}

.pillar__icon {
  flex: none;
  width: 15px;
  height: 15px;
  color: var(--accent-dim);
}

/* --------------------------- Quickstart --------------------------- */

.reference {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}

.quickstart {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 5rem 0 6rem;
  border-top: 1px solid var(--border);
}

.quickstart__blocks {
  max-width: var(--col-narrow);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 1rem;
  align-items: start;
}

.codeblock {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}
.codeblock:hover {
  border-color: var(--border-strong);
}

.codeblock__caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.codeblock__lang {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--fg-faint);
}

.codeblock__body {
  margin: 0;
  padding: 1rem 1.1rem 1.15rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--fg-dim);
  overflow-x: auto;
}

.codeblock__body code {
  background: transparent;
  padding: 0;
  color: inherit;
  font: inherit;
}

.cb-prompt {
  color: var(--fg-faint);
  user-select: none;
  margin-right: 0.5rem;
}

.quickstart__cta {
  max-width: var(--col-narrow);
  margin: 2.75rem auto 0;
  padding: 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid transparent;
  letter-spacing: 0.01em;
  transition: background var(--dur) var(--ease),
    border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.btn--primary {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-dim);
  color: var(--accent-contrast);
  border-color: var(--accent-dim);
}

.btn--ghost {
  color: var(--fg);
  border-color: var(--border-strong);
  background: transparent;
}
.btn--ghost:hover {
  border-color: var(--fg-muted);
  color: var(--fg);
  background: var(--bg-elev);
}

/* ----------------------------- Footer ----------------------------- */

.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 1.5rem 2.5rem;
  max-width: var(--col-wide);
  margin: 0 auto;
  color: var(--fg-muted);
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.footer__brand {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.footer__brand .nav__logo {
  width: 26px;
  height: 26px;
}

.footer__name {
  color: var(--fg);
  font-weight: 500;
  margin-bottom: 0.15rem;
}

.footer__tag {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.footer__heading {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 0.9rem;
}

.footer__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.footer__col a {
  color: var(--fg-muted);
  font-size: 0.9rem;
}
.footer__col a:hover {
  color: var(--accent);
  border-bottom-color: transparent;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 1.5rem;
  font-size: 0.8rem;
  color: var(--fg-faint);
}

/* ---------------------------- Responsive ---------------------------- */

@media (max-width: 960px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 3rem;
    padding: 3.5rem 1.5rem 4.5rem;
  }
  .terminal__body {
    height: 31rem;
  }
  .pillars {
    grid-template-columns: repeat(2, 1fr);
  }
  .quickstart__blocks {
    grid-template-columns: 1fr;
  }
  .footer__top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer__cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .nav {
    padding: 1rem 1.25rem;
  }
  .nav__links {
    gap: 1rem;
  }
  .nav__links a:not(.nav__github) {
    display: none;
  }

  .hero {
    padding: 2.5rem 1.25rem 4rem;
  }
  .hero__title {
    font-size: 2.1rem;
  }

  .install__cmd {
    font-size: 0.85rem;
  }

  .scenario__cols {
    grid-template-columns: 1fr;
  }
  .scenario__col + .scenario__col {
    border-left: 0;
    border-top: 1px solid var(--border);
  }

  .pillars {
    grid-template-columns: 1fr 1fr;
  }

  .footer__cols {
    grid-template-columns: 1fr 1fr;
  }
  .footer {
    padding: 2rem 1.25rem;
  }
}