/* Kallilex marketing site — "Attic Oxide" design system */

:root {
  color-scheme: dark;

  --basalt: #17161A;
  --surface: #201F24;
  --surface-2: #141318;
  --hairline: #2A292F;

  --marble: #F2EEE6;
  --ash: #9C989F;

  --verdigris: #2FAF9B;
  --attic-clay: #E46846;
  --electrum: #D7B45B;
  --tyrian: #7D5778;

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;

  --container: 72rem;
  --radius: 16px;
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--basalt);
  color: var(--marble);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--verdigris);
  text-decoration: none;
  transition: color var(--transition);
}

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

:focus-visible {
  outline: 2px solid var(--verdigris);
  outline-offset: 3px;
  border-radius: 4px;
}

kbd {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 0.15em 0.5em;
  color: var(--marble);
}

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

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Squiggle accent -------------------------------------------------- */

.squiggle {
  display: block;
  height: 0.35em;
  width: 3.2em;
  margin: 0.1em auto 0;
}

.squiggle path {
  fill: none;
  stroke: var(--attic-clay);
  stroke-width: 10;
  stroke-linecap: round;
}

h1 .accent {
  position: relative;
  display: inline-block;
}

.squiggle--inline {
  position: absolute;
  left: 0;
  bottom: -0.22em;
  width: 100%;
  height: 0.3em;
  margin: 0;
}

/* Header ------------------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(23, 22, 26, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--marble);
  font-weight: 600;
  font-size: 1.05rem;
}

.brand:hover {
  color: var(--marble);
}

.brand img {
  width: 28px;
  height: 28px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.95rem;
}

.site-nav .nav-full {
  display: none;
}

@media (min-width: 640px) {
  .site-nav .nav-full {
    display: inline-flex;
    align-items: center;
    gap: 1.75rem;
  }
}

/* Buttons ------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--attic-clay);
  color: var(--basalt);
}

.btn-primary:hover {
  background: #ee7c58;
  color: var(--basalt);
}

.btn-outline {
  background: transparent;
  border-color: var(--hairline);
  color: var(--marble);
}

.btn-outline:hover {
  border-color: var(--verdigris);
  color: var(--verdigris);
}

.btn-small {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
}

.chevron {
  transition: transform var(--transition);
}

.btn-outline[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}

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

.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
}

.hero__inner {
  max-width: 42rem;
  margin-inline: auto;
}

.hero__icon {
  width: 128px;
  height: 128px;
  margin: 0 auto 2rem;
}

.hero h1 {
  font-size: clamp(2.25rem, 4.5vw + 1rem, 3.6rem);
  line-height: 1.12;
  margin: 0 0 1.25rem;
  letter-spacing: -0.01em;
}

.hero__subline {
  color: var(--ash);
  font-size: clamp(1.05rem, 0.4vw + 1rem, 1.2rem);
  max-width: 38rem;
  margin: 0 auto 2.25rem;
}

.hero__buttons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  margin-bottom: 1.5rem;
}

.brew-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 260ms ease;
  max-width: 34rem;
  margin: 0 auto;
}

.brew-panel[aria-hidden="false"] {
  grid-template-rows: 1fr;
}

.brew-panel__inner {
  overflow: hidden;
}

.code-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  margin: 1rem 0 0.6rem;
  text-align: left;
}

.code-block code {
  flex: 1;
  min-width: 0; /* allow shrinking so overflow-x can engage */
  font-size: 0.85rem;
  color: var(--marble);
  overflow-x: auto;
  white-space: pre;
}

.copy-btn {
  flex-shrink: 0;
  background: transparent;
  border: 1px solid var(--hairline);
  color: var(--ash);
  border-radius: 8px;
  padding: 0.4rem 0.7rem;
  font-size: 0.78rem;
  font-family: inherit;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.copy-btn:hover {
  color: var(--verdigris);
  border-color: var(--verdigris);
}

.muted-note {
  color: var(--ash);
  font-size: 0.85rem;
  margin: 0;
}

.trust-line {
  color: var(--ash);
  font-size: 0.88rem;
  margin: 0 0 0.4rem;
}

.req-note {
  color: var(--ash);
  font-size: 0.82rem;
  margin: 0;
}

/* Demo scrollytelling --------------------------------------------------- */

.demo {
  position: relative;
}

.demo__sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  /* iOS Safari: the layer must never exceed the visual viewport, or sticky
     stops pinning while the toolbar is expanded */
  height: 100dvh;
  width: 100%;
  overflow: hidden;
  background-image: url("assets/demo-poster.svg");
  background-size: cover;
  background-position: center;
}

.demo__sticky video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.demo__scrim {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(23, 22, 26, 0.35), rgba(23, 22, 26, 0.75) 75%),
    rgba(23, 22, 26, 0.4);
}

.demo__toggle {
  position: absolute;
  top: 5rem;
  right: 1.25rem;
  z-index: 5;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  background: rgba(23, 22, 26, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--hairline);
  border-radius: 50%;
  color: var(--ash);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.demo__toggle:hover {
  color: var(--verdigris);
  border-color: var(--verdigris);
}

.demo__toggle .icon-play,
.demo__toggle.is-paused .icon-pause {
  display: none;
}

.demo__toggle.is-paused .icon-play {
  display: block;
}

.demo__step {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  /* steps span the viewport above the sticky layer; let clicks through to
     the video toggle except where the card sits */
  pointer-events: none;
  display: grid;
  align-items: end;
  padding: 3rem 1.5rem 4rem;
}

.demo__step .container {
  display: flex;
  width: 100%;
}

.demo__step:nth-child(even) .container {
  justify-content: flex-end;
}

.demo__step:nth-child(odd) .container {
  justify-content: flex-start;
}

.demo__card {
  pointer-events: auto;
  max-width: 30rem;
  width: 100%;
  background: linear-gradient(180deg, rgba(32, 31, 36, 0.92), rgba(20, 19, 24, 0.92));
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
}

.demo__kicker {
  display: block;
  color: var(--verdigris);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.demo__card h2 {
  font-size: clamp(1.4rem, 1vw + 1.1rem, 1.75rem);
  margin: 0 0 0.6rem;
  line-height: 1.25;
}

.demo__card p {
  color: var(--ash);
  margin: 0;
  font-size: 0.98rem;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.pill {
  border: 1px solid var(--verdigris);
  color: var(--verdigris);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  font-size: 0.82rem;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  font-size: 0.82rem;
  border: 1px solid currentColor;
}

.badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.badge-local {
  color: var(--verdigris);
}

.badge-lan {
  color: var(--electrum);
}

.badge-cloud {
  color: var(--ash);
}

/* How it works ------------------------------------------------------- */

.how {
  padding: 5rem 0;
  border-top: 1px solid var(--hairline);
}

.section-heading {
  text-align: center;
  margin-bottom: 3rem;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 1.4vw + 1.2rem, 2.1rem);
  margin: 0 0 0.5rem;
}

.section-heading p {
  color: var(--ash);
  margin: 0;
}

.how__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

@media (max-width: 800px) {
  .how__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.how__step {
  text-align: center;
}

.how__num {
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--hairline);
  line-height: 1;
  margin-bottom: 0.6rem;
}

.how__step p {
  margin: 0;
  font-size: 0.98rem;
}

/* Feature grid --------------------------------------------------------- */

.features {
  padding: 5rem 0;
  border-top: 1px solid var(--hairline);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .features__grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  border-color: var(--verdigris);
  transform: translateY(-2px);
}

.feature-card svg {
  width: 28px;
  height: 28px;
  margin-bottom: 1rem;
  stroke: var(--verdigris);
}

.feature-card h3 {
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
}

.feature-card p {
  color: var(--ash);
  font-size: 0.92rem;
  margin: 0;
}

/* FAQ -------------------------------------------------------------------- */

.faq {
  padding: 5rem 0;
  border-top: 1px solid var(--hairline);
}

.faq__list {
  max-width: 42rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.faq__item {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
}

.faq__item h3 {
  font-size: 1.02rem;
  margin: 0 0 0.5rem;
}

.faq__item p {
  color: var(--ash);
  font-size: 0.92rem;
  margin: 0;
}

/* Install --------------------------------------------------------------- */

.install {
  padding: 5rem 0;
  border-top: 1px solid var(--hairline);
}

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

@media (max-width: 800px) {
  .install__grid {
    grid-template-columns: 1fr;
  }
}

.install-card {
  min-width: 0; /* grid item: don't let the code block widen the column */
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 2rem;
}

.install-card h3 {
  margin: 0 0 1rem;
  font-size: 1.15rem;
}

.install-card .code-block {
  margin-top: 0;
}

.install-card__links {
  margin-top: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.gatekeeper-note {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hairline);
  color: var(--ash);
  font-size: 0.88rem;
  line-height: 1.6;
}

.gatekeeper-note strong {
  color: var(--marble);
}

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

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 2.5rem 0;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--marble);
  font-size: 0.92rem;
}

.footer__brand img {
  width: 22px;
  height: 22px;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.9rem;
}

.footer__legal {
  width: 100%;
  color: var(--ash);
  font-size: 0.82rem;
  margin-top: 0.5rem;
}

/* Legal pages -------------------------------------------------------------- */

.prose {
  max-width: 42rem;
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
}

.prose h1 {
  font-size: clamp(1.9rem, 2vw + 1.2rem, 2.4rem);
  margin-bottom: 2rem;
}

.prose h2 {
  font-size: 1.25rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.prose p,
.prose li {
  color: var(--ash);
  font-size: 0.98rem;
}

.prose a {
  color: var(--verdigris);
}

.prose .meta {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--hairline);
  font-size: 0.85rem;
}

/* Scroll reveal ------------------------------------------------------------ */

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms ease-out, transform 500ms ease-out;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn,
  .feature-card,
  a {
    transition: none;
  }
}