/* Laastras publication reader — shared styles for HTML publications */

:root {
  --ink: #10151f;
  --steel: #243447;
  --ember: #f05a28;
  --teal: #00a6a6;
  --sun: #ffc857;
  --royal: #3851d0;
  --paper: #f7f8fb;
  --nav-height: 4.25rem;
  --content-max: 58rem;
  --shadow-hard: 6px 6px 0 rgba(16, 21, 31, 0.18);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.publication-reader {
  margin: 0;
  padding: calc(var(--nav-height) + 1.5rem) clamp(1rem, 4vw, 2rem) 3rem;
  background: var(--paper);
  color: var(--ink);
  font-family: "Nunito", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(1rem, 0.92rem + 0.35vw, 1.2rem);
  font-weight: 400;
  line-height: 1.78;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.publication-reader,
body.publication-reader *:not(i):not(svg):not(path) {
  font-family: "Nunito", ui-sans-serif, system-ui, sans-serif;
}

/* --- Chrome (nav, sidebar, backdrop) --- */

.publication-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  border-bottom: 4px solid #fff;
  background: var(--ink);
  color: #fff;
  box-shadow: 0 4px 24px rgba(16, 21, 31, 0.35);
}

.publication-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.85rem 1rem;
}

.publication-nav__title {
  flex: 1;
  min-width: 0;
  padding: 0 0.5rem;
  font-size: clamp(0.8rem, 0.72rem + 0.35vw, 1.05rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.publication-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* Hamburger — pure CSS three-line icon */
.publication-hamburger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 2px solid #fff;
  background: var(--sun);
  cursor: pointer;
  flex-shrink: 0;
}

.publication-hamburger__line {
  display: block;
  width: 1.25rem;
  height: 3px;
  background: var(--ink);
  border-radius: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.publication-hamburger[aria-expanded="true"] .publication-hamburger__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.publication-hamburger[aria-expanded="true"] .publication-hamburger__line:nth-child(2) {
  opacity: 0;
}

.publication-hamburger[aria-expanded="true"] .publication-hamburger__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* PDF-viewer-matching action buttons */
.publication-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border: 2px solid #fff;
  font-family: inherit;
  font-size: inherit;
  font-weight: 900;
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  line-height: 1;
}

.publication-btn--back {
  background: var(--ember);
}

.publication-btn--link {
  background: var(--teal);
}

.publication-btn:hover,
.publication-btn:focus-visible {
  filter: brightness(1.06);
  outline: 2px solid var(--sun);
  outline-offset: 2px;
}

.flat-icon {
  display: inline-block;
  width: 1.1rem;
  height: 1.1rem;
  stroke-width: 2.6;
  vertical-align: -0.18rem;
}

.publication-nav svg,
.publication-sidebar svg {
  width: 1.15rem;
  height: 1.15rem;
  stroke-width: 2.6;
}

/* Sidebar outline */
.publication-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(16, 21, 31, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.publication-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.publication-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 50;
  width: min(22rem, 86vw);
  height: 100vh;
  height: 100dvh;
  padding: 1rem 1rem 1.5rem;
  padding-top: calc(var(--nav-height) + 0.5rem);
  border-right: 4px solid var(--ink);
  background: #fff;
  box-shadow: 8px 0 32px rgba(16, 21, 31, 0.2);
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform 0.28s ease;
}

.publication-sidebar.is-open {
  transform: translateX(0);
}

.publication-sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--ink);
}

.publication-sidebar__title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.publication-sidebar__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 2px solid var(--ink);
  background: var(--sun);
  color: var(--ink);
  cursor: pointer;
}

.publication-sidebar__links {
  display: grid;
  gap: 0.25rem;
}

.publication-sidebar__link {
  display: block;
  padding: 0.5rem 0.75rem;
  border-left: 4px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.publication-sidebar__link:hover,
.publication-sidebar__link:focus-visible {
  border-left-color: var(--ember);
  background: rgba(255, 200, 87, 0.25);
  outline: none;
}

.publication-sidebar__empty {
  font-size: 0.875rem;
  color: var(--steel);
}

/* --- Reading content --- */

.publication-content {
  max-width: var(--content-max);
  margin: 0 auto;
}

.publication-content p,
.publication-content li,
.publication-content td,
.publication-content th {
  font-size: 1em;
  line-height: 1.78;
}

.publication-content h1,
.publication-content h2,
.publication-content h3,
.publication-content h4,
.publication-content h5,
.publication-content h6 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.18;
  scroll-margin-top: calc(var(--nav-height) + 1rem);
}

.publication-content h1 {
  font-size: clamp(1.8rem, 1.35rem + 1.6vw, 3rem);
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
}

.publication-content h2 {
  font-size: clamp(1.45rem, 1.15rem + 1vw, 2.2rem);
  margin-top: 1.8rem;
  margin-bottom: 0.6rem;
}

.publication-content h3,
.publication-content h4,
.publication-content h5,
.publication-content h6 {
  font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.45rem);
  margin-top: 1.35rem;
  margin-bottom: 0.5rem;
}

.publication-content a {
  color: var(--royal);
}

.publication-content img {
  display: block;
  max-width: min(100%, calc(100vw - 2rem));
  height: auto;
  object-fit: contain;
  margin-left: auto;
  margin-right: auto;
}

.publication-content table {
  max-width: 100%;
  width: auto;
  margin-left: auto;
  margin-right: auto;
  border-collapse: collapse;
}

.publication-content ul,
.publication-content ol {
  padding-left: 1.5rem;
}

@media (max-width: 640px) {
  :root {
    --nav-height: 3.75rem;
  }

  .publication-nav__inner {
    padding: 0.65rem 0.75rem;
  }

  .publication-btn {
    padding: 0.45rem 0.75rem;
  }

  body.publication-reader {
    padding-top: calc(var(--nav-height) + 1rem);
  }
}