/* =========================================================
   TELEPORT — DOCUMENTATION
   Подключается ПОСЛЕ styles.css. Переиспользует переменные
   (--bg/--surface/--accent/...) и базовые компоненты (.topbar,
   .footer, .btn, .code, .callout). Здесь — только doc-слой.
   ========================================================= */

/* Док-страницы шире лендинга: нужен простор под sidebar + контент */
.doc-page main {
  display: block;
}

.doc-shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

/* ---------- Sidebar ---------- */
.doc-sidebar {
  position: sticky;
  top: 78px; /* высота sticky topbar + воздух */
  align-self: start;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  padding: 28px 0 40px;
  scrollbar-width: thin;
}

.doc-sidebar-title {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
  padding: 0 8px;
}

.doc-nav-group {
  margin-bottom: 22px;
}

.doc-nav-group > h4 {
  margin: 0 0 8px;
  padding: 0 8px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text);
}

.doc-nav-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.doc-nav-group a,
.doc-nav-soon {
  display: block;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--muted);
  border-left: 2px solid transparent;
  transition: background 0.14s ease, color 0.14s ease, border-color 0.14s ease;
}

.doc-nav-group a:hover {
  background: var(--surface);
  color: var(--text);
}

.doc-nav-group a.is-active {
  color: var(--text);
  background: rgba(79, 140, 255, 0.1);
  border-left-color: var(--accent);
  font-weight: 600;
}

.doc-nav-sub {
  margin: 2px 0 4px !important;
  padding: 2px 0 2px 14px !important;
  border-left: 1px solid var(--border);
  gap: 0 !important;
}

.doc-nav-sub a {
  font-size: 0.85rem;
  padding: 5px 10px;
  color: var(--muted);
  border-left: 2px solid transparent;
}

.doc-nav-sub a.spy-active {
  color: var(--text);
  border-left-color: var(--accent-2);
}

.doc-nav-soon {
  color: var(--muted);
  opacity: 0.5;
  cursor: default;
}

.doc-nav-soon::after {
  content: "скоро";
  margin-left: 8px;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-2);
  opacity: 0.8;
}

/* ---------- Content ---------- */
.doc-main {
  padding: 28px 0 64px;
  min-width: 0;
}

.doc-breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 14px;
}

.doc-breadcrumb a {
  color: var(--muted);
}

.doc-breadcrumb a:hover {
  color: var(--text);
}

.doc-main h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.doc-lead {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 68ch;
  margin: 0 0 36px;
}

.doc-main h2 {
  font-size: 1.5rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 48px 0 14px;
  padding-top: 8px;
  scroll-margin-top: 90px;
}

.doc-main h3 {
  font-size: 1.18rem;
  margin: 30px 0 10px;
  scroll-margin-top: 90px;
}

.doc-main p {
  color: var(--muted);
  max-width: 72ch;
  margin: 0 0 16px;
  line-height: 1.7;
}

.doc-main strong {
  color: var(--text);
}

.doc-main ul,
.doc-main ol {
  color: var(--muted);
  max-width: 72ch;
  margin: 0 0 18px;
  padding-left: 22px;
  line-height: 1.7;
}

.doc-main li {
  margin: 0 0 8px;
}

.doc-main li::marker {
  color: var(--accent);
}

.doc-main a {
  color: var(--accent);
  text-decoration: none;
}

.doc-main a:hover {
  text-decoration: underline;
}

.doc-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 44px 0;
}

/* ---------- Callouts (info / key / tip) ---------- */
.doc-note {
  margin: 22px 0;
  padding: 18px 20px 18px 48px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  position: relative;
  color: var(--text);
}

.doc-note p {
  color: var(--muted);
  margin: 0;
  max-width: none;
}

.doc-note p + p {
  margin-top: 8px;
}

.doc-note strong {
  color: var(--text);
}

.doc-note::before {
  position: absolute;
  left: 16px;
  top: 17px;
  font-size: 1.1rem;
  line-height: 1;
}

.doc-note.is-key {
  border-color: var(--accent);
  background: rgba(79, 140, 255, 0.08);
}

.doc-note.is-key::before {
  content: "🔑";
}

.doc-note.is-info::before {
  content: "ℹ️";
}

.doc-note.is-tip {
  border-color: var(--accent-2);
  background: rgba(56, 211, 159, 0.07);
}

.doc-note.is-tip::before {
  content: "✓";
  color: var(--accent-2);
  font-weight: 700;
}

/* ---------- Cards grid (hub) ---------- */
.doc-track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 32px 0;
}

.doc-track {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.doc-track:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.doc-track-ico {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(79, 140, 255, 0.12);
  color: var(--accent);
  margin-bottom: 16px;
}

.doc-track-ico svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.doc-track h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
  color: var(--text);
}

.doc-track p {
  margin: 0 0 16px;
  color: var(--muted);
  flex: 1 1 auto;
}

.doc-track ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.doc-track ul a {
  color: var(--muted);
  font-size: 0.92rem;
}

.doc-track ul a:hover {
  color: var(--accent);
}

/* ---------- UI figure / screen mockups ---------- */
.doc-figure {
  margin: 28px 0;
}

.doc-figure figcaption {
  margin-top: 10px;
  font-size: 0.86rem;
  color: var(--text-tertiary, var(--muted));
  text-align: center;
}

/* App window chrome — упрощённая «рамка» экрана клиента */
.ui-frame {
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.ui-frame-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.ui-frame-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--border-strong, var(--border));
  display: inline-block;
}

.ui-frame-bar i:nth-child(1) { background: #ff5f57; }
.ui-frame-bar i:nth-child(2) { background: #febc2e; }
.ui-frame-bar i:nth-child(3) { background: #28c840; }

.ui-frame-title {
  margin-left: 10px;
  font-size: 0.82rem;
  color: var(--muted);
}

.ui-frame-body {
  padding: 18px;
}

/* Chat bubbles */
.ui-chat {
  display: grid;
  gap: 10px;
}

.ui-bubble {
  max-width: 78%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.45;
}

.ui-bubble.in {
  justify-self: start;
  background: var(--surface-2);
  color: var(--text);
  border-bottom-left-radius: 4px;
}

.ui-bubble.out {
  justify-self: end;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  border-bottom-right-radius: 4px;
}

.ui-bubble small {
  display: block;
  margin-top: 4px;
  font-size: 0.72rem;
  opacity: 0.7;
}

.ui-sys {
  justify-self: center;
  font-size: 0.78rem;
  color: var(--muted);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
}

/* ---------- Key-assembly diagram (3 доли) ---------- */
.diagram {
  margin: 28px 0;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.diagram-row {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.diagram-node {
  flex: 1 1 150px;
  max-width: 220px;
  text-align: center;
  padding: 18px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-alt);
}

.diagram-node .dn-ico {
  width: 40px;
  height: 40px;
  margin: 0 auto 10px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(79, 140, 255, 0.12);
  color: var(--accent);
}

.diagram-node .dn-ico svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.diagram-node h4 {
  margin: 0 0 6px;
  font-size: 0.98rem;
  color: var(--text);
}

.diagram-node p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.5;
  max-width: none;
}

.diagram-plus {
  align-self: center;
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--accent);
}

.diagram-result {
  margin-top: 18px;
  padding: 16px;
  text-align: center;
  border: 1px dashed var(--accent);
  border-radius: 12px;
  background: rgba(79, 140, 255, 0.06);
  color: var(--text);
  font-size: 0.95rem;
}

.diagram-result strong {
  color: var(--accent);
}

/* ---------- Flow (отправитель → сервер → получатель) ---------- */
.flow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0;
}

.flow-box {
  flex: 1 1 160px;
  max-width: 230px;
  text-align: center;
  padding: 20px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.flow-box.is-muted {
  opacity: 0.85;
  border-style: dashed;
}

.flow-box h4 {
  margin: 10px 0 4px;
  font-size: 1rem;
  color: var(--text);
}

.flow-box p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  max-width: none;
}

.flow-box .fb-ico {
  width: 42px;
  height: 42px;
  margin: 0 auto;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(79, 140, 255, 0.12);
  color: var(--accent);
}

.flow-box .fb-ico svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.flow-arrow {
  color: var(--accent);
  font-size: 1.5rem;
  flex: none;
}

.flow-arrow small {
  display: block;
  font-size: 0.66rem;
  color: var(--muted);
  text-align: center;
}

/* ---------- Comparison table ---------- */
.doc-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  min-width: 480px;
}

.doc-table th,
.doc-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.doc-table th {
  color: var(--text);
  font-weight: 600;
  background: var(--bg-alt);
}

.doc-table td {
  color: var(--muted);
}

.doc-table tr:last-child td {
  border-bottom: none;
}

.doc-yes { color: var(--accent-2); font-weight: 600; }
.doc-no { color: var(--muted); }

/* ---------- Prev/next pager ---------- */
.doc-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.doc-pager a {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  max-width: 48%;
  transition: border-color 0.15s ease;
}

.doc-pager a:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.doc-pager a.next {
  text-align: right;
  margin-left: auto;
}

.doc-pager span {
  font-size: 0.76rem;
  color: var(--muted);
}

/* ---------- Mobile nav toggle ---------- */
.doc-nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  margin: 16px 24px 0;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
}

@media (max-width: 900px) {
  .doc-shell {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .doc-nav-toggle {
    display: inline-flex;
  }
  .doc-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    padding: 16px 0 8px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
    display: none;
  }
  .doc-sidebar.is-open {
    display: block;
  }
  .doc-main {
    padding-top: 8px;
  }
}

@media (max-width: 640px) {
  .doc-pager a {
    max-width: 100%;
    flex: 1;
  }
}