:root {
  --document-red: #f43334;
  --document-red-dark: #c12e2f;
  --document-ink: #161616;
  --document-panel: #202020;
  --document-panel-deep: #191919;
  --document-muted: #a7a7a7;
  --document-line: rgba(255, 255, 255, 0.1);
}

.document-page {
  min-height: 100vh;
  overflow-y: auto;
  color: #fff;
  background: linear-gradient(135deg, #4a2424 0%, #242020 39%, #101010 100%);
}

.access-gate {
  position: fixed;
  z-index: 10;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(16, 16, 16, 0.82);
  backdrop-filter: blur(6px);
}

.access-gate[hidden] {
  display: none;
}

.access-card {
  width: min(100%, 410px);
  padding: 36px;
  border: 1px solid rgba(244, 51, 52, 0.34);
  border-top: 4px solid var(--document-red);
  background: #191919;
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.42);
}

.access-home-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  color: #bdbdbd;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.access-home-link i {
  color: var(--document-red);
}

.access-home-link:hover,
.access-home-link:focus-visible {
  color: #fff;
  text-decoration: none;
}

.access-home-link:focus-visible {
  outline: 2px solid var(--document-red);
  outline-offset: 4px;
}

.access-card h2 {
  margin: 8px 0 10px;
  color: #fff;
  font-size: 25px;
  line-height: 1.2;
}

.access-card p {
  margin: 0 0 24px;
  color: var(--document-muted);
  font-size: 14px;
  line-height: 1.6;
}

.access-card label {
  display: block;
  margin: 16px 0 7px;
  color: #ddd;
  font-size: 12px;
  font-weight: 700;
}

.access-card input {
  width: 100%;
  padding: 12px 13px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 2px;
  outline: 0;
  background: #242424;
  font: inherit;
}

.access-card input:focus {
  border-color: var(--document-red);
  box-shadow: 0 0 0 3px rgba(244, 51, 52, 0.14);
}

.access-button {
  width: 100%;
  margin-top: 24px;
  padding: 13px 16px;
  color: #fff;
  border: 0;
  border-radius: 2px;
  background: var(--document-red-dark);
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
}

.access-button:hover,
.access-button:focus {
  background: var(--document-red);
}

.access-error {
  margin: 14px 0 0 !important;
  color: #ff9e9e !important;
  font-size: 12px !important;
}

.reader-shell.is-locked {
  visibility: hidden;
}

.document-header {
  display: flex;
  align-items: center;
  gap: 32px;
  min-height: 92px;
  padding: 18px clamp(20px, 5vw, 76px);
  border-bottom: 1px solid var(--document-line);
  background: rgba(16, 16, 16, 0.76);
}

.document-brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
}

.document-brand img {
  display: block;
  width: 132px;
  height: auto;
}

.document-heading {
  flex: 1;
}

.document-kicker,
.viewer-eyebrow,
.section-label {
  display: block;
  color: var(--document-red);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.3px;
  line-height: 1.4;
  text-transform: uppercase;
}

.document-heading h1,
.viewer-toolbar h2,
.sidebar-intro h2 {
  margin: 0;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0;
}

.document-heading h1 {
  margin-top: 4px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.15;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover,
.back-link:focus {
  color: var(--document-red);
  text-decoration: none;
}

.reader-shell {
  display: grid;
  grid-template-columns: minmax(250px, 310px) minmax(0, 1fr);
  gap: 22px;
  width: min(1440px, calc(100% - 40px));
  min-height: calc(100vh - 132px);
  margin: 20px auto;
}

.topic-sidebar,
.viewer-panel {
  border: 1px solid var(--document-line);
  background: rgba(25, 25, 25, 0.92);
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.2);
}

.topic-sidebar {
  position: relative;
  transition: width 220ms ease, min-width 220ms ease;
}

.sidebar-toggle {
  position: absolute;
  z-index: 2;
  top: 18px;
  right: 14px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(8px);
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.sidebar-toggle:hover,
.sidebar-toggle:focus-visible {
  color: var(--document-red);
  border-color: rgba(244, 51, 52, 0.55);
  background: rgba(255, 255, 255, 0.1);
  outline: 0;
}

.sidebar-toggle:focus-visible {
  box-shadow: 0 0 0 3px rgba(244, 51, 52, 0.22);
}

.reader-shell {
  grid-template-columns: minmax(250px, 310px) minmax(0, 1fr);
  transition: grid-template-columns 220ms ease;
}

.reader-shell.sidebar-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
  gap: 0;
}

.sidebar-collapsed .topic-sidebar {
  min-width: 0;
  width: 0;
  overflow: visible;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

.sidebar-collapsed .sidebar-intro,
.sidebar-collapsed .topic-list {
  visibility: hidden;
  opacity: 0;
}

.sidebar-collapsed .sidebar-toggle {
  position: fixed;
  top: 50%;
  right: auto;
  left: 12px;
  transform: translateY(-50%) rotate(180deg);
}

.sidebar-intro {
  padding: 28px 58px 23px 24px;
  border-bottom: 1px solid var(--document-line);
  background: linear-gradient(145deg, rgba(193, 46, 47, 0.24), rgba(25, 25, 25, 0.04));
}

.sidebar-intro h2 {
  margin-top: 8px;
  font-size: 23px;
  line-height: 1.2;
}

.sidebar-intro p {
  margin: 10px 0 0;
  color: var(--document-muted);
  font-size: 14px;
  line-height: 1.6;
}

.topic-list {
  padding: 12px;
}

.topic-group-title {
  margin: 15px 10px 7px;
  color: #777;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.3px;
  text-transform: uppercase;
}

.topic-group-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: calc(100% - 20px);
  padding: 0 0 7px;
  border: 0;
  border-bottom: 1px solid var(--document-line);
  background: transparent;
  cursor: pointer;
  color: var(--document-red);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.35;
  text-align: left;
}

.topic-group-toggle[hidden] {
  display: none !important;
}

.topic-link[hidden] {
  display: none;
}

.topic-group-toggle i {
  color: var(--document-red);
  font-size: 10px;
  transition: transform 180ms ease;
}

.topic-group-toggle[aria-expanded="false"] i {
  transform: rotate(-90deg);
}

.topic-group-toggle:focus-visible {
  outline: 2px solid var(--document-red);
  outline-offset: 4px;
}

.topic-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 66px;
  padding: 11px 12px;
  border-left: 3px solid transparent;
  color: #fff;
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.topic-link:hover,
.topic-link:focus,
.topic-link.active {
  border-left-color: var(--document-red);
  color: #fff;
  background: rgba(244, 51, 52, 0.13);
  text-decoration: none;
}

.topic-link:hover {
  transform: translateX(3px);
}

.topic-icon {
  display: grid;
  flex: 0 0 34px;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--document-red);
  border: 1px solid rgba(244, 51, 52, 0.35);
  border-radius: 3px;
  background: rgba(244, 51, 52, 0.08);
}

.topic-link strong,
.topic-link small {
  display: block;
}

.topic-link strong {
  font-size: 14px;
  line-height: 1.35;
}

.topic-link small {
  margin-top: 3px;
  color: #858585;
  font-size: 11px;
  line-height: 1.3;
}

.viewer-panel {
  padding: 0;
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 81px;
  padding: 17px 23px;
  border-bottom: 1px solid var(--document-line);
  background: rgba(32, 32, 32, 0.88);
}

.viewer-toolbar h2 {
  margin-top: 5px;
  font-size: 20px;
  line-height: 1.25;
}

.read-only-badge {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  padding: 8px 11px;
  color: #f6c0c0;
  border: 1px solid rgba(244, 51, 52, 0.4);
  border-radius: 3px;
  background: rgba(193, 46, 47, 0.13);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.viewer-frame {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 14px;
  overscroll-behavior: contain;
  background: #303030;
}

.welcome-state {
  display: grid;
  min-height: 582px;
  place-content: center;
  justify-items: center;
  padding: 24px;
  color: #fff;
  text-align: center;
}

.welcome-state i {
  margin-bottom: 18px;
  color: var(--document-red);
  font-size: 48px;
}

.welcome-state h3 {
  margin: 0;
  color: #fff;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.2;
}

.welcome-state p {
  margin: 10px 0 0;
  color: var(--document-muted);
  font-size: 14px;
  line-height: 1.5;
}

.is-hidden {
  display: none !important;
}

.pdf-viewer {
  display: block;
  width: 100%;
  height: auto;
  padding-bottom: 48px;
  box-sizing: border-box;
  overscroll-behavior: contain;
}

.pdf-page {
  display: block;
  width: 100%;
  max-width: none;
  height: auto;
  margin: 0 auto 14px;
  border: 0;
  background: #fff;
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
}

.pdf-viewer::after {
  content: "";
  display: block;
  height: 120px;
}

.pdf-loading {
  display: grid;
  min-height: 100%;
  place-items: center;
  margin: 0;
  color: var(--document-muted);
  font-size: 14px;
}

.viewer-note {
  position: absolute;
  right: 24px;
  top: 24px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: calc(100% - 48px);
  padding: 9px 12px;
  color: #ddd;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 3px;
  background: rgba(16, 16, 16, 0.88);
  font-size: 11px;
  line-height: 1.35;
}

.viewer-note i {
  color: var(--document-red);
}

@media (max-width: 800px) {
  .document-page {
    height: auto;
    overflow-y: auto;
  }

  .document-header {
    flex-wrap: wrap;
    gap: 14px 20px;
    padding: 18px 20px;
  }

  .document-heading {
    order: 2;
    flex-basis: calc(100% - 152px);
  }

  .back-link {
    order: 3;
    width: 100%;
    padding-top: 2px;
  }

  .reader-shell {
    display: flex;
    flex-direction: column;
    width: calc(100% - 24px);
    height: auto;
    min-height: calc(100dvh - 150px);
    margin: 12px auto;
  }

  .topic-sidebar {
    flex: 0 0 34%;
    margin-bottom: 12px;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .sidebar-toggle {
    right: 12px;
  }

  .reader-shell.sidebar-collapsed {
    display: grid !important;
    grid-template-columns: 0 minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
  }

  .reader-shell.sidebar-collapsed .topic-sidebar {
    margin-bottom: 0;
    max-height: none;
    overflow: visible;
  }

  .reader-shell.sidebar-collapsed .viewer-panel {
    flex: 1 1 auto;
    min-width: 0;
  }

  .reader-shell:not(.sidebar-collapsed) .viewer-panel {
    flex: 1 1 auto;
  }

  .topic-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topic-group-title {
    grid-column: 1 / -1;
  }

  .viewer-frame {
    flex: 1 1 auto;
    height: auto;
    padding: 8px;
  }

  .pdf-viewer {
    height: auto;
    overflow: visible;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 480px) {
  .document-brand img {
    width: 112px;
  }

  .document-heading h1 {
    font-size: 23px;
  }

  .topic-list {
    display: block;
  }

  .viewer-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }
}