/*
 * LakedApp landing — brand layer on top of ../css/classical.css (the
 * unmodified design-system stylesheet: tokens + .btn/.card/.nav/.dialog/
 * .field etc.). This file only adds what's specific to the landing page
 * itself: the .brand lockup, the dark colophon footer, hero/section
 * layout, and small helpers — everything still reads color, font, space
 * and radius from classical.css's --color-, --font-, --space- and
 * --radius- variables, per design-system/readme.md ("never hard-code a hex, a font
 * name or a px value the tokens already carry").
 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Two brand tokens the handoff calls out that classical.css's ramp
     doesn't carry verbatim (see README.md "Design Tokens"): the deeper
     gold used for paragraph-size links/text (the accent itself doesn't
     hit body-text contrast), and the dark "colophon" used for the footer
     and the dark mark. */
  --lk-accent-deep: #8c6228;
  --lk-accent-deep-hover: #6d4d16;
  --lk-colophon: #17150f;
  --lk-colophon-text: #a9a49a;
  --color-muted: #57544e;

  /* EXPERIMENT: sans-serif headings instead of the brandbook's Cormorant
     Garamond - overrides classical.css's --font-heading (left unmodified
     itself) for headings/kickers/buttons only; --font-body (Lora) is
     untouched so paragraph text is unaffected. Revert by deleting this
     one declaration (and the @import above, and the two `.lk-kicker`/
     `.cta-kicker` font-family lines below) to go back to Cormorant Garamond. */
  --font-heading: 'Inter', system-ui, sans-serif;
}

.lk-page {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}
/* :not(.btn) throughout the link rules below: the contact CTAs are
   <a class="btn btn-primary" href="mailto:..."> (they used to be <button>
   elements opening a form modal), and these descendant selectors outrank
   classical.css's single-class .btn-primary, which would repaint them in
   the plain link/nav color. */
.lk-page a:not(.btn) { color: var(--lk-accent-deep); text-underline-offset: 3px; }
.lk-page a:not(.btn):hover { color: var(--lk-accent-deep-hover); }
.lk-page ::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.lk-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* — header / brand lockup (README.md "1. Шапка сайта") — */
.lk-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-divider);
}
.lk-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 4px 0;
  text-decoration: none;
  color: inherit;
}
.brand:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.brand__mark { display: block; width: 32px; height: 32px; flex: none; border-radius: 50%; object-fit: cover; }
.brand__text { display: flex; flex-direction: column; gap: 2px; }
.brand__name {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 24px;
  line-height: 1;
  color: var(--color-text);
}
.brand__sub {
  font-family: var(--font-body);
  font-size: 9px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-muted, #57544e);
}

.lk-nav { display: flex; align-items: center; gap: var(--space-6); }
.lk-nav-links { display: flex; align-items: center; gap: var(--space-6); }
.lk-nav a:not(.btn) {
  font-size: 14px;
  color: var(--color-text);
  text-decoration: none;
}
.lk-nav a:not(.btn):hover { color: var(--color-accent); }
.lk-nav-toggle { display: none; }

/* — nav: cross-segment pages (a second landing page for another
   audience, e.g. /data-ai/) are real page links, not in-page scroll
   anchors like Услуги/Стек/Процесс/Контакты above them - give them a
   visible break instead of blending into the anchor list. With only
   one sibling page right now, both landing.html and data-ai.html just
   use a plain `.lk-nav-divider` + single link; .lk-nav-more/
   .lk-nav-more-trigger/.lk-nav-more-menu below are a dropdown variant
   (same plain Alpine x-show idiom as blog.css's .ai-actions-menu) kept
   around unused for when a second sibling page exists again and a
   flat list of links would get crowded - mobile's equivalent is
   .lk-mobile-nav-group (divider, optionally a small
   .lk-mobile-nav-label when there's more than one link in the group).
   Add a new segment page's nav link inside
   .lk-nav-more-menu / .lk-mobile-nav-group, not next to the anchors. */
.lk-nav-divider { width: 1px; height: 18px; background: var(--color-divider); }

.lk-nav-more { position: relative; }
.lk-nav-more-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-family: var(--font-body);
  color: var(--color-text);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
.lk-nav-more-trigger:hover { color: var(--color-accent); }
.lk-nav-more-trigger svg { transition: transform 0.15s ease; }
.lk-nav-more-trigger[aria-expanded="true"] svg { transform: rotate(180deg); }

.lk-nav-more-menu {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  min-width: 220px;
  z-index: 30;
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 6px;
}
.lk-nav-more-menu a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
}
.lk-nav-more-menu a:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); color: var(--color-accent-700); }

.lk-mobile-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3) 0 var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.lk-mobile-nav a:not(.btn) { font-size: 15px; color: var(--color-text); text-decoration: none; }

.lk-mobile-nav-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
}
.lk-mobile-nav-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted, #57544e);
}

@media (max-width: 860px) {
  .lk-nav-links, .lk-nav .btn { display: none; }
  .lk-nav-toggle {
    display: inline-flex;
    background: none;
    border: 0;
    padding: 4px;
    color: var(--color-text);
    cursor: pointer;
  }
}
@media (min-width: 861px) {
  .lk-mobile-nav { display: none; }
}

/* — hero — */
.lk-hero { padding: clamp(56px, 10vw, 108px) 0 clamp(48px, 8vw, 80px); }
.lk-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading); /* EXPERIMENT: was var(--font-body) - see :root above */
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-700);
  margin-bottom: var(--space-4);
}
.lk-kicker::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--color-accent);
}
.hero-title {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: clamp(2.2rem, 5.4vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  max-width: 16ch;
  margin: 0 0 var(--space-4);
}
.hero-title em {
  font-style: italic;
  color: var(--color-accent-700);
}
.lk-lede {
  font-size: 18px;
  line-height: 1.75;
  color: color-mix(in srgb, var(--color-text) 78%, transparent);
  max-width: 56ch;
  margin: 0 0 var(--space-6);
}
.lk-hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-8); }
.lk-hero-actions .btn { font-size: 15px; padding: 12px 22px; }

/* Secondary hero link (e.g. landing.html's "Решения для экспертов и
   медиа" link to experts/) - deliberately quiet: muted color, no button
   chrome, smaller than .lk-lede - so it never competes with the primary
   .btn-primary CTA above it. */
.lk-hero-secondary {
  margin-top: calc(-1 * var(--space-6));
  margin-bottom: var(--space-6);
  font-size: 14px;
}
.lk-hero-secondary a {
  color: var(--color-muted, #57544e);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.lk-hero-secondary a:hover { color: var(--lk-accent-deep); }

.lk-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 0;
  width: fit-content;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.lk-stat { padding: var(--space-3) var(--space-6); text-align: center; }
.lk-stat + .lk-stat { border-left: 1px solid var(--color-divider); }
.lk-stat-num {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 26px;
  color: var(--color-accent-700);
  font-feature-settings: 'tnum';
}
.lk-stat-label {
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-muted, #57544e);
  margin-top: 2px;
}
@media (max-width: 560px) {
  .lk-stats { grid-template-columns: 1fr; width: 100%; }
  .lk-stat + .lk-stat { border-left: 0; border-top: 1px solid var(--color-divider); }
}

/* — sections — */
.lk-section { padding: clamp(48px, 8vw, 88px) 0; }
.lk-section + .lk-section { border-top: 1px solid var(--color-divider); }
.lk-section-head { max-width: 60ch; margin-bottom: var(--space-8); }
.lk-section-title { font-size: clamp(1.7rem, 3vw, 2.2rem); margin-bottom: var(--space-3); }
.lk-section-lede { font-size: 16px; line-height: 1.75; color: color-mix(in srgb, var(--color-text) 78%, transparent); }

/* — services — */
.lk-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
}
.lk-service-card { padding: var(--space-4); gap: var(--space-3); }
.lk-service-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  color: var(--color-accent-700);
}
.lk-service-icon svg { width: 19px; height: 19px; }
.lk-service-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }

/* — stack — */
.lk-stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-6);
}
.lk-stack-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted, #57544e);
  margin-bottom: var(--space-2);
}
.lk-stack-items { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }

/* — process — */
.lk-process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
}
.lk-step-num {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 44px;
  line-height: 1;
  color: color-mix(in srgb, var(--color-accent) 35%, transparent);
  font-feature-settings: 'tnum';
  margin-bottom: var(--space-2);
}
.lk-process-grid h3 { margin-bottom: var(--space-2); }
.lk-process-grid p { font-size: 14px; line-height: 1.75; color: color-mix(in srgb, var(--color-text) 78%, transparent); }

/* — CTA panel — */
.lk-cta-panel {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: clamp(32px, 6vw, 64px);
  text-align: center;
}
.lk-cta-panel .hero-title { max-width: none; margin-left: auto; margin-right: auto; }
.lk-cta-panel .lk-lede { margin-left: auto; margin-right: auto; text-align: center; }
.lk-cta-footnote {
  margin-top: var(--space-4);
  font-size: 13px;
  color: var(--color-muted, #57544e);
}

/* — FAQ (native <details>, no JS) — */
.lk-faq { display: flex; flex-direction: column; }
.lk-faq details {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-3) 0;
}
.lk-faq details:last-child { border-bottom: 1px solid var(--color-divider); }
.lk-faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 17px;
}
.lk-faq summary::-webkit-details-marker { display: none; }
.lk-faq summary::after {
  content: '+';
  flex: none;
  font-family: var(--font-heading);
  font-size: 22px;
  color: var(--color-accent);
  transition: transform 0.2s ease;
}
.lk-faq details[open] summary::after { transform: rotate(45deg); }
.lk-faq summary:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.lk-faq p {
  margin: var(--space-3) 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: color-mix(in srgb, var(--color-text) 78%, transparent);
  max-width: 68ch;
}

/* — footer / colophon (README.md "2. Подвал") — */
.lk-footer {
  background: var(--lk-colophon);
  color: var(--lk-colophon-text);
  margin-top: 0;
  padding: 56px 0;
}
.lk-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.lk-footer-mark { display: block; width: 30px; height: 30px; border-radius: 50%; object-fit: cover; }
.lk-footer-copy { font-size: 12px; text-align: center; line-height: 1.6; }
.lk-footer-links { display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: center; }
.lk-footer-links a, .lk-footer-links button {
  font-size: 12px;
  color: var(--lk-colophon-text);
  text-decoration: none;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font-family: var(--font-body);
}
.lk-footer-links a:hover, .lk-footer-links button:hover { color: var(--color-accent); }
.lk-footer :focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

[x-cloak] { display: none !important; }