/* Mindlog — static site styles.
   Palette mirrors packages/ui_kit/lib/theme/app_colors.dart so the site and the
   app read as one product. No external fonts or assets: this page should still
   render correctly years from now with nothing to re-fetch. */

:root {
  --bg: #f8f8f6;
  --fg: #2d2d2d;
  --card: #ffffff;
  --muted-fg: #6b6b6b;
  --border: #d4d4d2;
  --primary: #2f6bff;
  --primary-fg: #ffffff;
  --shadow: 0 1px 2px rgba(45, 45, 45, 0.04), 0 8px 24px rgba(45, 45, 45, 0.06);
  --radius: 14px;
  --maxw: 68rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1d23;
    --fg: #e4e4e2;
    --card: #22252b;
    --muted-fg: #9a9a98;
    --border: #33373f;
    --primary: #4c86ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.prose {
  max-width: 44rem;
}

a {
  color: var(--primary);
}

a:hover {
  text-decoration: none;
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
}

h1 {
  font-size: clamp(2.1rem, 6vw, 3.4rem);
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  margin-top: 2.5em;
}

h3 {
  font-size: 1.1rem;
  margin-bottom: 0.35em;
}

p {
  margin: 0 0 1.1em;
}

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

header.site {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  z-index: 10;
}

header.site .wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 650;
  font-size: 1.05rem;
  color: inherit;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  display: block;
}

nav.site {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.94rem;
}

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

nav.site a:hover {
  color: var(--fg);
}

/* language switch */

.lang {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.lang button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted-fg);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.25rem 0.7rem;
  cursor: pointer;
}

.lang button[aria-pressed="true"] {
  background: var(--primary);
  color: var(--primary-fg);
}

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

.hero {
  padding: clamp(3.5rem, 10vw, 7rem) 0 clamp(2.5rem, 6vw, 4rem);
}

.hero .prose {
  max-width: 38rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1rem;
}

.lede {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--muted-fg);
  max-width: 34rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  background: var(--primary);
  color: var(--primary-fg);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.97rem;
  border: 1px solid transparent;
}

.btn:hover {
  filter: brightness(1.08);
}

.btn.secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}

.btn[aria-disabled="true"] {
  background: transparent;
  color: var(--muted-fg);
  border-color: var(--border);
  cursor: default;
  pointer-events: none;
}

/* ---------- features ---------- */

.features {
  padding: clamp(2rem, 5vw, 3rem) 0 clamp(3rem, 7vw, 5rem);
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow);
}

.card p {
  margin: 0;
  color: var(--muted-fg);
  font-size: 0.96rem;
}

/* ---------- privacy strip ---------- */

.strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: clamp(3rem, 7vw, 4.5rem) 0;
}

.strip ul {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.55rem 2rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  max-width: 44rem;
}

.strip li {
  color: var(--muted-fg);
  padding-left: 1.5rem;
  position: relative;
}

.strip li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* ---------- long-form pages ---------- */

.doc {
  padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(3rem, 7vw, 5rem);
}

.doc h2 {
  margin-top: 2.2em;
  font-size: 1.3rem;
}

.doc .updated {
  color: var(--muted-fg);
  font-size: 0.9rem;
}

.doc ul {
  padding-left: 1.2rem;
  margin: 0 0 1.1em;
}

.doc li {
  margin-bottom: 0.4em;
}

.doc dt {
  font-weight: 650;
  margin-top: 1.4em;
}

.doc dd {
  margin: 0.2em 0 0;
  color: var(--muted-fg);
}

/* ---------- footer ---------- */

footer.site {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 3.5rem;
  color: var(--muted-fg);
  font-size: 0.9rem;
}

footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
}

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

footer.site a:hover {
  color: var(--fg);
}

footer.site .spacer {
  margin-left: auto;
}

/* language visibility is driven by the html[data-lang] attribute so that the
   correct copy is painted on first frame, before any script runs */

html[data-lang="en"] [lang="ru"],
html[data-lang="ru"] [lang="en"] {
  display: none;
}