/* ════════════════════════════════════════════════════════════════════
   LeadFlow Landing · Pages overlay + Mobile menu styles
   ════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────
   NAV BURGER + MOBILE MENU (used by Nav in landing-app.jsx)
   ───────────────────────────────────────────────────────────────── */
.nav-burger {
  display: none;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 160ms, background 160ms, border-color 160ms;
}
.nav-burger:active { transform: scale(0.94); }
.nav-burger:hover { background: var(--cream-2); border-color: var(--ink-3); }
.nav-burger span {
  display: block;
  width: 16px;
  height: 1.6px;
  background: var(--ink-1);
  border-radius: 2px;
}

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 250;
  background: rgba(28, 24, 20, 0.18);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 220ms cubic-bezier(0.16, 1, 0.3, 1),
    visibility 0s linear 220ms;
  pointer-events: none;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}
.mobile-menu-panel {
  position: absolute;
  inset: 0;
  background: var(--cream);
  display: flex;
  flex-direction: column;
  padding: 16px 16px 24px;
  transform: translateY(-12px);
  transition: transform 280ms cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.mobile-menu.open .mobile-menu-panel { transform: translateY(0); }

.mobile-menu-head {
  flex-shrink: 0;
  height: 48px;
  padding: 0 4px 0 0;
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.mobile-menu-close {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  display: grid; place-items: center;
  cursor: pointer;
  color: var(--ink-1);
  transition: transform 140ms, background 140ms;
}
.mobile-menu-close:active { transform: scale(0.94); background: var(--cream-2); }

.mobile-menu-section-title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-4);
  font-weight: 600;
  padding: 14px 6px 8px;
  margin-top: 4px;
}
.mobile-menu-section-title:first-of-type { padding-top: 0; }

.mobile-menu-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-1);
  letter-spacing: -0.01em;
  margin-bottom: 6px;
  cursor: pointer;
  transition: transform 140ms, border-color 140ms, background 140ms;
}
.mobile-menu-link::after {
  content: '›';
  color: var(--ink-3);
  font-size: 22px;
  line-height: 1;
  transition: transform 160ms, color 160ms;
}
.mobile-menu-link:active {
  transform: scale(0.985);
  background: var(--cream-2);
  border-color: var(--ink-3);
}
.mobile-menu-link:active::after { color: var(--accent); transform: translateX(2px); }

.mobile-menu-cta {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mobile-menu-cta .btn {
  width: 100%;
  justify-content: center;
  min-height: 50px;
  padding: 14px 18px;
}

/* show burger on mobile, hide auxiliary — синхронизировано с .nav-links @960 */
@media (max-width: 960px) {
  .nav-burger { display: flex; }
}
@media (max-width: 900px) {
  .nav-cta .nav-login { display: none !important; }
  .nav-cta .nav-cta-btn { display: none !important; }
  .nav-cta { gap: 8px !important; margin-left: auto; }
}

/* ─────────────────────────────────────────────────────────────────
   PAGE SHELL — fullscreen overlay
   ───────────────────────────────────────────────────────────────── */
.lf-page {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--cream);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition:
    opacity 280ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 320ms cubic-bezier(0.16, 1, 0.3, 1),
    visibility 0s linear 320ms;
}
.lf-page.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0s;
}

.lf-page-bar {
  flex-shrink: 0;
  height: 64px;
  background: rgba(245, 239, 230, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--line-soft);
  position: sticky;
  top: 0;
  z-index: 5;
}
.lf-page-bar-inner {
  max-width: 1240px;
  margin: 0 auto;
  height: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lf-page-close {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px 8px 12px;
  border-radius: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--ink-1);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: all 160ms cubic-bezier(0.16, 1, 0.3, 1);
}
.lf-page-close:hover {
  background: var(--cream-2);
  border-color: var(--ink-3);
  transform: translateY(-1px);
}
.lf-page-close:active { transform: translateY(0) scale(0.97); }
.lf-page-close kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 6px;
  background: var(--cream-2);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  color: var(--ink-3);
  margin-left: 4px;
}

.lf-page-scroll { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.lf-page-content { max-width: 1080px; margin: 0 auto; padding: 60px 40px 80px; }

.lf-page-h1 {
  font-family: var(--font-sans);
  font-size: clamp(36px, 5.4vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.030em;
  font-weight: 500;
  color: var(--ink-1);
  margin-top: 22px;
  max-width: 22ch;
}
.lf-page-h1 em { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--accent); }
.lf-page-h2 {
  font-family: var(--font-sans);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 500;
  color: var(--ink-1);
  margin: 64px 0 24px;
}
.lf-page-h2 em { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--accent); }
.lf-page-lede {
  margin-top: 26px;
  font-size: 19px;
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 60ch;
}

/* ── ABOUT ─────────────────────────────────────────────────── */
.lf-stats { margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.lf-stat {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  padding: 22px 20px;
  box-shadow: var(--shadow-soft);
}
.lf-stat-v { font-size: 36px; font-weight: 500; letter-spacing: -0.025em; color: var(--ink-1); line-height: 1; }
.lf-stat-v em { font-family: var(--font-serif); font-style: italic; color: var(--accent); font-weight: 400; }
.lf-stat-k { margin-top: 10px; font-size: 13px; color: var(--ink-3); line-height: 1.4; }

.lf-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.lf-card {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  padding: 28px 24px;
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 240ms;
  box-shadow: var(--shadow-soft);
}
.lf-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-mid); }
.lf-card-n { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 14px; font-weight: 500; }
.lf-card-t { font-size: 18px; font-weight: 600; letter-spacing: -0.015em; color: var(--ink-1); margin-bottom: 8px; }
.lf-card-b { font-size: 14.5px; line-height: 1.55; color: var(--ink-3); }

.lf-team { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.lf-mem {
  display: flex; align-items: center; gap: 14px;
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  transition: transform 200ms;
}
.lf-mem:hover { transform: translateX(2px); }
.lf-mem-av {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: grid; place-items: center;
  color: white; font-weight: 600; font-size: 14px; flex-shrink: 0;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), 0 4px 10px -2px rgba(28,24,20,0.18);
}
.lf-mem-name { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; color: var(--ink-1); }
.lf-mem-role { font-size: 13px; color: var(--ink-3); margin-top: 2px; }

/* ── BLOG ──────────────────────────────────────────────────── */
.lf-blog { margin-top: 48px; display: flex; flex-direction: column; gap: 12px; }
.lf-post {
  display: block;
  padding: 28px 24px;
  border-radius: 16px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 240ms, border-color 240ms;
  box-shadow: var(--shadow-soft);
  cursor: pointer;
}
.lf-post:hover { transform: translateY(-2px); border-color: var(--ink-3); box-shadow: var(--shadow-mid); }
.lf-post-meta { display: flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); letter-spacing: 0.02em; margin-bottom: 12px; }
.lf-post-tag { padding: 3px 9px; background: var(--accent-soft); color: var(--accent); border-radius: 5px; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; font-size: 10px; }
.lf-post-title { font-size: 22px; font-weight: 500; letter-spacing: -0.018em; color: var(--ink-1); line-height: 1.25; margin-bottom: 10px; max-width: 60ch; }
.lf-post-excerpt { font-size: 15px; line-height: 1.55; color: var(--ink-3); max-width: 70ch; }
.lf-post-arrow {
  margin-top: 16px;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500;
  color: var(--accent);
}
.lf-post:hover .lf-post-arrow { gap: 10px; }

/* ── CONTACTS ──────────────────────────────────────────────── */
.lf-contact-grid { margin-top: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.lf-contact-channels { display: flex; flex-direction: column; gap: 12px; }
.lf-channel {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  transition: transform 200ms, box-shadow 200ms;
  box-shadow: var(--shadow-soft);
}
.lf-channel:hover { transform: translateY(-2px); box-shadow: var(--shadow-mid); }
.lf-channel-ico {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid; place-items: center;
  flex-shrink: 0;
  color: var(--accent);
}
.lf-channel-name { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 4px; font-weight: 600; }
.lf-channel-handle { font-size: 16px; font-weight: 500; color: var(--ink-1); letter-spacing: -0.01em; }
.lf-channel-note { font-size: 13px; color: var(--ink-3); margin-top: 4px; }

.lf-form {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-soft);
}
.lf-form-title { font-size: 18px; font-weight: 600; letter-spacing: -0.015em; color: var(--ink-1); margin-bottom: 4px; }
.lf-field { display: flex; flex-direction: column; gap: 6px; }
.lf-field span { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.lf-field input, .lf-field textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 14.5px;
  color: var(--ink-1);
  outline: none;
  transition: border-color 160ms, background 160ms, box-shadow 160ms;
  font-family: inherit;
  resize: vertical;
}
.lf-field textarea { min-height: 90px; }
.lf-field input::placeholder, .lf-field textarea::placeholder { color: var(--ink-4); }
.lf-field input:focus, .lf-field textarea:focus {
  background: var(--paper);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(229,90,43,0.12);
}
.lf-form-note { font-size: 11.5px; color: var(--ink-4); line-height: 1.45; margin-top: 4px; }
.lf-form-ok {
  display: flex; align-items: center; gap: 14px;
  padding: 18px;
  background: rgba(63,125,92,0.08);
  border: 1px solid rgba(63,125,92,0.24);
  border-radius: 12px;
}
.lf-form-ok-ico {
  width: 40px; height: 40px;
  border-radius: 999px;
  background: var(--ok);
  color: white;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.lf-form-ok-t { font-size: 15px; font-weight: 600; color: var(--ink-1); }
.lf-form-ok-d { font-size: 13.5px; color: var(--ink-3); margin-top: 2px; }

/* ── DOCS ──────────────────────────────────────────────────── */
.lf-docs-search {
  margin-top: 36px;
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink-3);
  box-shadow: var(--shadow-soft);
}
.lf-docs-search input { flex: 1; border: none; background: transparent; outline: none; font-size: 15px; color: var(--ink-1); }
.lf-docs-search input::placeholder { color: var(--ink-4); }
.lf-docs-search kbd { font-family: var(--font-mono); font-size: 10px; padding: 2px 7px; background: var(--cream-2); border: 1px solid var(--line-soft); border-radius: 4px; color: var(--ink-3); }

.lf-docs { margin-top: 32px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.lf-docs-group-t { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--line-soft); }
.lf-docs-list { display: flex; flex-direction: column; gap: 6px; }
.lf-docs-item {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  color: var(--ink-1);
  transition: transform 180ms, border-color 180ms, background 180ms;
  cursor: pointer;
}
.lf-docs-item:hover {
  transform: translateX(2px);
  border-color: var(--accent);
  background: rgba(251,228,214,0.4);
}
.lf-docs-item-t { font-size: 14.5px; font-weight: 500; letter-spacing: -0.01em; }
.lf-docs-item-d { font-size: 12.5px; color: var(--ink-3); margin-top: 3px; line-height: 1.4; }
.lf-docs-item svg { color: var(--ink-3); flex-shrink: 0; transition: color 180ms; }
.lf-docs-item:hover svg { color: var(--accent); }

/* Article view (when user clicks an item) */
.lf-docs-article { margin-top: 28px; }
.lf-docs-back {
  border: none; background: transparent; cursor: pointer;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--accent); padding: 6px 0;
  margin-bottom: 18px;
}
.lf-docs-back:hover { text-decoration: underline; }
.lf-docs-article-t {
  font-family: var(--font-serif); font-size: 36px; font-weight: 400;
  letter-spacing: -0.5px; line-height: 1.15; color: var(--ink-0);
  margin-bottom: 22px;
}
.lf-docs-article-body { color: var(--ink-1); font-size: 15.5px; line-height: 1.75; }
.lf-docs-article-body p { margin-bottom: 14px; }
.lf-docs-article-body h3 {
  font-family: var(--font-serif); font-style: italic; font-size: 22px;
  font-weight: 400; margin: 28px 0 10px; color: var(--ink-0);
}
.lf-docs-article-body ul, .lf-docs-article-body ol { margin: 8px 0 18px 22px; }
.lf-docs-article-body li { margin-bottom: 6px; }
.lf-docs-article-body code {
  font-family: var(--font-mono); font-size: 13px;
  padding: 2px 6px; background: var(--cream-2);
  border-radius: 4px; color: var(--accent);
}
.lf-docs-article-body a { color: var(--accent); text-decoration: none; }
.lf-docs-article-body a:hover { text-decoration: underline; }
.lf-docs-article-body b, .lf-docs-article-body strong { color: var(--ink-0); font-weight: 600; }
@media (max-width: 720px) {
  .lf-docs-article-t { font-size: 28px; }
}

/* ── LOGIN ─────────────────────────────────────────────────── */
.lf-login { margin-top: 48px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px; align-items: start; }
.lf-login-card {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  padding: 32px;
  box-shadow: var(--shadow-mid);
}
.lf-login-card form { display: flex; flex-direction: column; gap: 14px; }
.lf-login-sso {
  width: 100%;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-1);
  cursor: pointer;
  transition: all 160ms cubic-bezier(0.16, 1, 0.3, 1);
}
.lf-login-sso:hover { background: var(--cream-2); border-color: var(--ink-3); transform: translateY(-1px); }
.lf-login-or {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-4);
  margin: 4px 0;
}
.lf-login-or::before, .lf-login-or::after { content: ''; flex: 1; height: 1px; background: var(--line-soft); }

.lf-login-aside {
  background: var(--ink-1);
  color: var(--paper);
  border-radius: 18px;
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
}
.lf-login-aside::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 400px 200px at 100% 0%, rgba(229,90,43,0.25), transparent 65%);
}
.lf-login-aside-t { font-size: 16px; font-weight: 500; letter-spacing: -0.01em; position: relative; }
.lf-login-aside-d { margin-top: 10px; font-size: 14px; color: rgba(251,247,240,0.7); line-height: 1.5; position: relative; }
.lf-login-aside .btn { position: relative; }

/* ─────────────────────────────────────────────────────────────────
   RESPONSIVE — pages + mobile menu
   ───────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .lf-page-bar { height: 60px; }
  .lf-page-bar-inner { padding: 0 16px; }
  .lf-page-content { padding: 36px 20px 60px; }
  .lf-page-h1 { margin-top: 14px; max-width: 100%; }
  .lf-page-h2 { margin: 44px 0 18px; }
  .lf-page-lede { margin-top: 18px; font-size: 15.5px; }
  .lf-page-close span { display: none; }
  .lf-page-close kbd { display: none; }
  .lf-page-close { padding: 8px 10px; }

  .lf-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 32px; }
  .lf-stat { padding: 16px 14px; border-radius: 12px; }
  .lf-stat-v { font-size: 26px; }
  .lf-stat-k { font-size: 12px; margin-top: 6px; }

  .lf-cards { grid-template-columns: 1fr; gap: 10px; }
  .lf-card { padding: 22px 18px; border-radius: 14px; }

  .lf-team { grid-template-columns: 1fr; gap: 8px; }

  .lf-blog { margin-top: 32px; gap: 10px; }
  .lf-post { padding: 22px 18px; border-radius: 14px; }
  .lf-post-title { font-size: 18px; }
  .lf-post-excerpt { font-size: 14px; }

  .lf-contact-grid { grid-template-columns: 1fr; gap: 12px; margin-top: 32px; }
  .lf-form { padding: 22px 20px; border-radius: 14px; }

  .lf-docs { grid-template-columns: 1fr; gap: 22px; margin-top: 24px; }
  .lf-docs-search { padding: 12px 14px; }
  .lf-docs-search kbd { display: none; }

  .lf-login { grid-template-columns: 1fr; gap: 14px; margin-top: 32px; }
  .lf-login-card { padding: 22px 20px; border-radius: 14px; }
  .lf-login-aside { padding: 22px 20px; border-radius: 14px; }
}

@media (max-width: 480px) {
  .lf-page-content { padding: 28px 16px 56px; }
  .lf-page-h1 { font-size: clamp(28px, 8.5vw, 36px); }
  .lf-stats { grid-template-columns: 1fr 1fr; }
  .lf-stat-v { font-size: 24px; }
}

/* hover-fix touch */
@media (hover: none) {
  .lf-card:hover, .lf-post:hover, .lf-mem:hover, .lf-channel:hover, .lf-docs-item:hover { transform: none !important; }
}