/*
 * Author: Andrey Morozov
 * Confidential. Structural styles for the IAM documentation shell: sticky
 * header, navigation sidebar, readable content column, right-hand TOC, search
 * dialog and footer. Product prose styling is intentionally out of scope.
 */

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--iam-blue);
  color: white;
  transform: translateY(-150%);
  transition: transform var(--transition);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(300px, 448px) 1fr;
  align-items: center;
  min-height: var(--header-height);
  padding: 0 28px;
  border-bottom: 1px solid var(--iam-stroke);
  background: rgba(6, 10, 22, .9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -.025em;
}

.brand-mark { width: 25px; color: var(--iam-blue-hi); }
.brand-name b { color: var(--iam-blue-hi); font-weight: 600; }

.search-trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--iam-stroke-strong);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, .025);
  color: var(--iam-ink-mute);
  text-align: left;
  transition: border-color var(--transition), background var(--transition);
}

.search-trigger:hover { border-color: var(--iam-stroke-bright); background: rgba(255, 255, 255, .045); }
.search-trigger svg, .mobile-actions svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.search-trigger span { flex: 1; font-size: 13px; }
.search-trigger kbd { color: var(--iam-ink-dim); font: 500 11px var(--font-mono); }

.header-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 26px;
  color: var(--iam-ink-mute);
  font-size: 13px;
}

.header-links a { transition: color var(--transition); }
.header-links a:hover { color: var(--iam-ink); }
.language-switcher {
  display: inline-flex;
  padding: 2px;
  border: 1px solid var(--iam-stroke);
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, .025);
  font: 500 10px var(--font-mono);
}

.language-switcher a {
  min-width: 29px;
  padding: 4px 6px;
  border-radius: 4px;
  color: var(--iam-ink-dim);
  text-align: center;
}

.language-switcher a.active { background: var(--iam-blue-soft); color: var(--iam-blue-hi); }
.header-links .group-link {
  padding: 9px 16px;
  border-radius: var(--radius-xs);
  background: linear-gradient(180deg, #ffa564, #e26d20);
  color: #1a0d04;
  font-weight: 700;
  box-shadow: 0 8px 24px -12px rgba(255, 138, 61, .75);
}

.mobile-actions { display: none; align-items: center; }

.docs-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: calc(100vh - var(--header-height));
}

.sidebar {
  position: sticky;
  top: var(--header-height);
  align-self: start;
  height: calc(100vh - var(--header-height));
  padding: 24px 18px 40px 28px;
  overflow-y: auto;
  border-right: 1px solid var(--iam-stroke);
  background: rgba(6, 10, 22, .48);
  scrollbar-width: thin;
  scrollbar-color: var(--iam-stroke-strong) transparent;
}

.nav-section { margin-bottom: 22px; }
.nav-section h2 {
  margin: 0 0 7px;
  color: var(--iam-ink-dim);
  font: 500 10px/1.4 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.nav-row {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 33px;
  margin-left: -10px;
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  color: var(--iam-ink-mute);
  font-size: 13px;
  transition: color var(--transition), background var(--transition);
}

.nav-row:hover { background: var(--iam-panel); color: var(--iam-ink); }
.nav-row.active { background: rgba(31, 85, 175, .34); color: var(--iam-ink); }

.main-content { min-width: 0; }

.content-frame {
  display: grid;
  grid-template-columns: minmax(0, var(--content-width)) var(--toc-width);
  justify-content: center;
  gap: 52px;
  min-height: 70vh;
  padding: 38px 44px 72px;
}

.list-frame { grid-template-columns: minmax(0, 920px); }
.article { min-width: 0; }

.toc {
  position: sticky;
  top: calc(var(--header-height) + 38px);
  align-self: start;
  max-height: calc(100vh - var(--header-height) - 70px);
  overflow-y: auto;
  padding-left: 18px;
  border-left: 1px solid var(--iam-stroke);
}

.toc h2 {
  margin: 0 0 14px;
  color: var(--iam-ink-dim);
  font: 500 10px/1.4 var(--font-mono);
  letter-spacing: .09em;
  text-transform: uppercase;
}

.toc nav, .toc nav ul { margin: 0; padding: 0; list-style: none; }
.toc nav ul ul { display: none; }
.toc a {
  position: relative;
  display: block;
  padding: 6px 0;
  color: var(--iam-ink-dim);
  font-size: 12px;
  line-height: 1.45;
  transition: color var(--transition);
}

.toc a:hover, .toc a.active { color: var(--iam-blue-hi); }
.toc a.active::before {
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: -19px;
  width: 2px;
  background: var(--iam-blue);
  content: "";
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  margin: 0 44px;
  padding: 40px max(0px, calc((100% - 1120px) / 2));
  border-top: 1px solid var(--iam-stroke);
  color: var(--iam-ink-dim);
  font-size: 12px;
}

.site-footer p { max-width: 460px; margin: 7px 0 0; }
.footer-brand { color: var(--iam-ink); font: 600 14px var(--font-mono); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 18px; align-items: start; }
.site-footer a:hover { color: var(--iam-ink); }
.site-footer .copyright { grid-column: 1 / -1; }

.search-dialog {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: start center;
  padding-top: min(15vh, 140px);
}

.search-dialog[hidden] { display: none; }
.search-backdrop { position: absolute; inset: 0; background: rgba(2, 5, 13, .76); backdrop-filter: blur(8px); }
.search-panel {
  position: relative;
  width: min(680px, calc(100vw - 32px));
  overflow: hidden;
  border: 1px solid var(--iam-stroke-bright);
  border-radius: var(--radius-md);
  background: #0d162b;
  box-shadow: 0 34px 90px rgba(0, 0, 0, .55);
}

.search-panel header { display: flex; align-items: center; gap: 10px; padding: 13px 16px; border-bottom: 1px solid var(--iam-stroke); }
.search-panel header svg { width: 18px; fill: none; stroke: var(--iam-blue-hi); stroke-width: 1.8; }
.search-panel header label { flex: 1; color: var(--iam-ink-mute); font-size: 12px; }
.search-panel header button { color: var(--iam-ink-dim); font: 500 10px var(--font-mono); }
.search-panel input {
  width: 100%;
  padding: 17px 18px;
  border: 0;
  border-bottom: 1px solid var(--iam-stroke);
  outline: 0;
  background: transparent;
  color: var(--iam-ink);
  font-size: 18px;
}

.search-results { max-height: 420px; overflow-y: auto; padding: 10px; }
.search-results > p { margin: 20px; color: var(--iam-ink-dim); font-size: 13px; }
.search-result { display: block; padding: 12px; border-radius: var(--radius-sm); }
.search-result:hover, .search-result:focus { background: var(--iam-blue-soft); }
.search-result b { display: block; color: var(--iam-ink); font-size: 14px; }
.search-result span { display: block; margin-top: 3px; color: var(--iam-ink-dim); font-size: 12px; }

body.search-open, body.menu-open { overflow: hidden; }