:root {
  color-scheme: light;
  --brand-blue: #0071bc;
  --brand-blue-dark: #005894;
  --brand-gold: #ffcf00;
  --brand-gold-dark: #e2b700;
  --bg: #e4e5f0;
  --panel: #0071bc;
  --panel-border: rgba(255, 255, 255, 0.22);
  --panel-text: #ffffff;
  --panel-muted: rgba(255, 255, 255, 0.82);
  --button-bg: rgba(255, 255, 255, 0.14);
  --button-border: rgba(255, 255, 255, 0.34);
  --button-hover: rgba(255, 255, 255, 0.22);
  --accent: #ffcf00;
  --accent-strong: #e2b700;
  --paper-shadow: 0 18px 40px rgba(0, 113, 188, 0.16);
  --paper-border: rgba(0, 113, 188, 0.14);
  --danger-bg: #fff3f3;
  --danger-border: #f2b8b5;
  --danger-text: #8f1d1d;
  --banner-bg: rgba(255, 255, 255, 0.7);
  --banner-border: rgba(0, 113, 188, 0.18);
  --text: #102033;
  --muted: #526173;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    linear-gradient(180deg, rgba(0, 113, 188, 0.13) 0%, rgba(228, 229, 240, 0.92) 38%, #ffffff 100%);
  color: var(--text);
}

body {
  min-height: 100vh;
}

body[data-viewer-mode="sds"] {
  --brand-blue: #2465aa;
  --brand-blue-dark: #164f91;
  --brand-gold: #f3c94b;
  --brand-gold-dark: #d7a91f;
  --panel: #164f91;
  --accent: #f3c94b;
  --accent-strong: #d7a91f;
}

.shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  background: var(--panel);
  color: var(--panel-text);
  border-bottom: 1px solid var(--panel-border);
  box-shadow: 0 8px 22px rgba(0, 83, 138, 0.24);
}

.toolbar__group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.toolbar__group--title {
  min-width: min(100%, 20rem);
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
}

.toolbar__eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-gold);
}

.toolbar__title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  word-break: break-word;
}

.toolbar__meta {
  font-size: 0.84rem;
  color: var(--panel-muted);
}

.toolbar__button,
.toolbar__page-picker input {
  appearance: none;
  border: 1px solid var(--button-border);
  background: var(--button-bg);
  color: var(--panel-text);
  border-radius: 8px;
  font: inherit;
}

.toolbar__button {
  cursor: pointer;
  text-decoration: none;
  padding: 0.55rem 0.95rem;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.toolbar__button:hover,
.toolbar__button:focus-visible,
.toolbar__page-picker input:focus-visible {
  background: var(--button-hover);
  border-color: rgba(255, 207, 0, 0.82);
  outline: none;
}

.toolbar__button:active {
  transform: translateY(1px);
}

.toolbar__button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.toolbar__button--link {
  background: var(--accent);
  border-color: transparent;
  color: #1f2328;
  font-weight: 800;
}

.toolbar__button--link:hover,
.toolbar__button--link:focus-visible {
  background: var(--accent-strong);
  border-color: transparent;
}

.toolbar__page-picker {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--panel-muted);
  font-size: 0.92rem;
}

.toolbar__page-picker input {
  width: 4.75rem;
  padding: 0.5rem 0.8rem;
}

.toolbar__page-total,
.toolbar__zoom {
  min-width: 3.5rem;
  text-align: center;
  color: var(--panel-muted);
  font-size: 0.92rem;
}

.viewer-shell {
  flex: 1;
  width: min(100%, 1080px);
  margin: 0 auto;
  padding: 1rem;
}

.contents-panel {
  position: fixed;
  top: 5.6rem;
  left: 1rem;
  bottom: 1rem;
  z-index: 20;
  width: min(22rem, calc(100vw - 2rem));
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1rem;
  border: 1px solid rgba(0, 113, 188, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 20px 50px rgba(0, 83, 138, 0.22);
  max-width: 100vw;
  max-height: 100dvh;
  overflow: hidden;
  overscroll-behavior: contain;
}

.contents-panel[hidden] {
  display: none;
}

.contents-panel__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.contents-panel__eyebrow {
  color: var(--brand-blue);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contents-panel__title {
  margin-top: 0.1rem;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 800;
}

.contents-panel__close {
  appearance: none;
  border: 1px solid rgba(0, 113, 188, 0.22);
  border-radius: 8px;
  background: #fff;
  color: var(--brand-blue-dark);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 0.45rem 0.65rem;
}

.contents-search {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.contents-search input {
  width: 100%;
  min-height: 2.75rem;
  border: 1px solid rgba(0, 113, 188, 0.24);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
  color: var(--text);
  font: inherit;
}

.contents-search input:focus-visible {
  border-color: var(--brand-blue);
  outline: 3px solid rgba(255, 207, 0, 0.42);
}

.contents-list {
  display: grid;
  gap: 0.45rem;
  min-width: 0;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 0.2rem;
}

.contents-list__meta,
.contents-empty {
  color: var(--muted);
  font-size: 0.82rem;
}

.contents-item {
  appearance: none;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  border: 1px solid rgba(0, 113, 188, 0.13);
  border-left: 4px solid rgba(0, 113, 188, 0.38);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  padding: 0.65rem 0.7rem 0.65rem calc(0.7rem + (var(--toc-level, 0) * 0.9rem));
  text-align: left;
}

.contents-item:hover,
.contents-item:focus-visible {
  border-color: rgba(0, 113, 188, 0.52);
  outline: none;
}

.contents-item.is-active {
  border-left-color: var(--brand-gold);
  background: rgba(255, 207, 0, 0.15);
}

.contents-item__title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 800;
}

.contents-item__page {
  color: var(--brand-blue-dark);
  font-size: 0.78rem;
  font-weight: 800;
}

.banner,
.error {
  border-radius: 16px;
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--banner-border);
  background: var(--banner-bg);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.error {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-text);
}

.is-hidden {
  display: none;
}

.viewer {
  display: grid;
  gap: 1rem;
}

.page-card {
  background: rgba(255, 255, 255, 0.72);
  border-radius: 8px;
  padding: 1rem;
  border: 1px solid rgba(0, 113, 188, 0.16);
  box-shadow: 0 14px 34px rgba(0, 113, 188, 0.09);
}

.page-card--single {
  min-height: calc(100vh - 220px);
}

.page-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.75rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.page-label {
  font-weight: 700;
  color: var(--text);
}

.page-canvas-wrap {
  display: flex;
  justify-content: center;
  overflow: auto;
  padding: 0.2rem;
}

.page-canvas-stack {
  position: relative;
  display: inline-block;
}

.page-canvas {
  display: block;
  max-width: 100%;
  height: auto;
  background: #fff;
  border: 1px solid var(--paper-border);
  box-shadow: var(--paper-shadow);
}

.page-link-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-link {
  appearance: none;
  position: absolute;
  display: block;
  border: 0;
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  pointer-events: auto;
}

.page-link:hover,
.page-link:focus-visible {
  background: rgba(255, 207, 0, 0.24);
  outline: 2px solid rgba(0, 113, 188, 0.45);
}

@media (max-width: 720px) {
  .toolbar {
    gap: 0.55rem;
    padding: 0.65rem;
  }

  .toolbar__group {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .toolbar__group--title {
    min-width: 100%;
  }

  .viewer-shell {
    padding: 0.75rem;
  }

  .contents-panel {
    top: 0.75rem;
    left: 0.75rem;
    right: 0.75rem;
    bottom: 0.75rem;
    width: auto;
  }

  .page-card {
    padding: 0.75rem;
    border-radius: 18px;
  }
}

@media (max-width: 520px) {
  html:has(.contents-panel:not([hidden])),
  body.contents-open {
    overflow: hidden;
  }

  .contents-panel {
    inset: 0;
    width: 100vw;
    height: 100dvh;
    max-width: none;
    max-height: none;
    padding: calc(0.75rem + env(safe-area-inset-top)) calc(0.75rem + env(safe-area-inset-right)) calc(0.75rem + env(safe-area-inset-bottom)) calc(0.75rem + env(safe-area-inset-left));
    border: 0;
    border-radius: 0;
    box-shadow: none;
    contain: layout paint;
  }

  .contents-panel__head,
  .contents-search,
  .contents-search input,
  .contents-list,
  .contents-item {
    min-width: 0;
    max-width: 100%;
  }

  .contents-panel__head > div {
    min-width: 0;
  }

  .contents-search input,
  .toolbar__page-picker input {
    font-size: 16px;
  }

  .toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.4rem;
    padding: 0.45rem 0.5rem;
  }

  .toolbar__group {
    gap: 0.35rem;
    min-width: 0;
    flex-wrap: nowrap;
  }

  .toolbar__group--title {
    min-width: 0;
    gap: 0;
  }

  .toolbar__eyebrow,
  .toolbar__meta {
    display: none;
  }

  .toolbar__title {
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.82rem;
    line-height: 1.1;
  }

  .toolbar__button {
    min-height: 2rem;
    padding: 0.35rem 0.48rem;
    border-radius: 7px;
    font-size: 0.84rem;
  }

  .toolbar__page-picker {
    gap: 0.25rem;
    font-size: 0.82rem;
  }

  .toolbar__page-picker input {
    width: 3.25rem;
    min-height: 2rem;
    padding: 0.3rem 0.45rem;
    text-align: center;
  }

  .toolbar__page-total,
  .toolbar__zoom {
    min-width: auto;
    font-size: 0.82rem;
  }

  .toolbar__button--link {
    margin-left: auto;
  }

  .viewer-shell {
    padding: 0.5rem;
  }

  .banner,
  .error {
    margin-bottom: 0.5rem;
    padding: 0.65rem 0.75rem;
    border-radius: 8px;
  }

  .page-card {
    padding: 0.5rem;
    border-radius: 8px;
  }
}