/* Base styles for public pages: reset, typography, layout primitives, header/footer.
   Component styles live in components.css; every value comes from tokens.css. */

/* ---- Base ------------------------------------------------------------------------------ */

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

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

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-1);
  line-height: var(--lh-body);
  font-size-adjust: from-font;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
figure,
blockquote {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  font-weight: 600;
}

h1,
h2 {
  font-family: var(--font-serif);
  line-height: var(--lh-heading);
  letter-spacing: var(--tracking-heading);
}

h1 {
  font-size: var(--fs-4);
}

h2 {
  font-size: var(--fs-4);
}

h3,
h4 {
  font-size: var(--fs-2);
  line-height: var(--lh-snug);
}

@media (min-width: 48rem) {
  h1 {
    font-size: var(--fs-5);
  }
}

p,
li,
dd {
  text-wrap: pretty;
}

a {
  color: var(--color-accent);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: color-mix(in oklch, currentColor 45%, transparent);
  transition: color var(--dur-1) var(--ease), text-decoration-color var(--dur-1) var(--ease);
}

a:hover {
  color: var(--color-accent-strong);
  text-decoration-color: currentColor;
}

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

::selection {
  background: var(--color-accent-soft);
  color: var(--color-text);
}

small,
.small {
  font-size: var(--fs-0);
}

.kicker {
  display: block;
  font-size: var(--fs-caption);
  font-weight: 500;
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-kicker);
  color: var(--color-muted);
}

.lede {
  font-size: var(--fs-lede);
  line-height: var(--lh-text);
  color: var(--color-text-2);
  max-width: var(--measure-prose);
}

.muted {
  color: var(--color-muted);
}

.prose {
  max-width: var(--measure-prose);
}

.prose > * + * {
  margin-block-start: var(--space-4);
}

.prose :is(h2, h3) {
  margin-block-start: var(--space-6);
}

.prose :is(ul, ol) {
  padding-inline-start: 1.25em;
}

.prose li + li {
  margin-block-start: var(--space-1);
}

.num {
  font-variant-numeric: tabular-nums lining-nums;
}

.reg {
  font-family: var(--font-mono);
  font-size: max(0.85em, 0.75rem);
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 0.12em 0.45em;
  border-radius: var(--radius-xs);
  background: var(--color-bg-2);
  color: var(--color-text-2);
  white-space: nowrap;
}

/* ---- Layout primitives ----------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--measure-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 48rem) {
  .container {
    padding-inline: var(--space-6);
  }
}

.container--form {
  max-width: calc(var(--measure-form) + 2 * var(--space-6));
}

.stack > * + * {
  margin-block-start: var(--space-4);
}

.stack--tight > * + * {
  margin-block-start: var(--space-2);
}

.stack--loose > * + * {
  margin-block-start: var(--space-7);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  align-items: center;
}

.cluster--between {
  justify-content: space-between;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  inset-block-start: var(--space-2);
  inset-inline-start: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--radius-control);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
  z-index: 10;
}

.skip-link:hover {
  color: var(--color-on-primary);
}

[hidden] {
  display: none !important;
}

/* ---- Header, wordmark, switches, footer ---------------------------------------------- */

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 5;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-bg);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-5);
  min-height: 4rem;
  padding-block: var(--space-3);
}

/* Small phones: tighter gaps keep wordmark, theme and language on one row. */
@media (width < 30rem) {
  .site-header__inner,
  .site-header__tools {
    column-gap: var(--space-2);
  }

  .site-header [data-theme-toggle] {
    padding-inline: var(--space-2);
  }
}

.site-header__tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.18em;
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.01em;
}

.wordmark:hover {
  color: var(--color-text);
}

.wordmark__mark {
  inline-size: 0.32em;
  block-size: 0.32em;
  background: var(--color-accent);
  border-radius: var(--radius-xs);
}

.wordmark__sub {
  display: none;
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  font-weight: 500;
  letter-spacing: var(--tracking-kicker);
  color: var(--color-muted);
  margin-inline-start: var(--space-2);
}

@media (min-width: 40rem) {
  .wordmark__sub {
    display: inline;
  }
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-5);
}

.nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--fs-0);
  font-weight: 500;
  padding-block: var(--space-2);
}

.nav a:hover,
.nav a[aria-current] {
  color: var(--color-accent);
}

.lang-switch {
  display: inline-flex;
  padding: 2px;
  gap: 2px;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-control);
}

.lang-switch__btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--color-muted);
  font: inherit;
  font-size: var(--fs-caption);
  font-weight: 500;
  letter-spacing: var(--tracking-kicker);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-xs);
  min-block-size: 2rem;
  cursor: pointer;
  transition: background var(--dur-1) var(--ease), color var(--dur-1) var(--ease);
}

.lang-switch__btn:hover {
  color: var(--color-text);
}

.lang-switch__btn.is-current {
  background: var(--color-card);
  color: var(--color-text);
  box-shadow: var(--shadow-1);
}

main {
  flex: 1;
  padding-block: var(--space-6) var(--space-8);
}

.site-footer {
  border-top: 1px solid var(--color-line);
  padding-block: var(--space-6);
  font-size: var(--fs-caption);
  color: var(--color-muted);
}

.page-head {
  margin-block-end: var(--space-7);
}

.page-head > * + * {
  margin-block-start: var(--space-3);
}

.page-head .kicker + * {
  margin-block-start: var(--space-2);
}


/* ---- Liquid glass: ambient ground, floating header, Zaychik wordmark ------------------- */

body {
  background:
    radial-gradient(60rem 40rem at 88% -8%, var(--color-ambient-1), transparent 70%),
    radial-gradient(52rem 36rem at -8% 108%, var(--color-ambient-2), transparent 70%),
    var(--color-bg);
  background-attachment: fixed;
}

h1,
h2 {
  font-weight: 700;
}

.kicker {
  font-size: var(--fs-0);
  font-weight: 600;
  color: var(--color-green);
}

/* The glass material: text on it stays color-text; it floats over the ambient ground.
   Forms and tables never sit on glass. */
:is(.site-header__inner, .lp-index, .lp-fact, .lp-services, .lp-contact, .lp-mobile-cta,
    .side-note, .figure) {
  background: var(--color-glass);
  -webkit-backdrop-filter: var(--backdrop-glass);
  backdrop-filter: var(--backdrop-glass);
  box-shadow: var(--shadow-glass);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  :is(.site-header__inner, .lp-index, .lp-fact, .lp-services, .lp-contact, .lp-mobile-cta,
      .side-note, .figure) {
    background: var(--color-glass-strong);
  }
}

@media (prefers-reduced-transparency: reduce) {
  :is(.site-header__inner, .lp-index, .lp-fact, .lp-services, .lp-contact, .lp-mobile-cta,
      .side-note, .figure) {
    background: var(--color-card);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

.site-header {
  border-bottom: 0;
  background: transparent;
  padding: var(--space-3) var(--space-4) 0;
}

.site-header__inner {
  min-height: 3.5rem;
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-5);
  border-radius: var(--radius-round);
}

.nav a {
  font-size: 0.9375rem;
}

.lang-switch {
  border: 0;
  padding: 3px;
  background: var(--color-bg-2);
  border-radius: var(--radius-round);
}

.lang-switch__btn {
  border-radius: var(--radius-round);
}

.wordmark {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0;
  gap: 0.12em;
}

.wordmark__mark {
  inline-size: 0.26em;
  block-size: 0.26em;
  border-radius: var(--radius-round);
  background: var(--color-brand);
}

.site-footer {
  border-top: 0;
}

/* Small phones: the wordmark, the account links, theme and language share two rows (portal
   tests pin this), so the capsule gives its side space back. */
@media (width < 30rem) {
  .site-header {
    padding-inline: var(--space-1);
  }

  .site-header__inner {
    padding-inline: var(--space-3) var(--space-2);
  }

  .wordmark {
    font-size: 1.375rem;
  }
}