/* Notes reader chrome — religion-style left TOC aside on wide screens */

@property --reader-inset-left {
  syntax: '<length>';
  inherits: true;
  initial-value: 0px;
}

/* Notes pages: full-width shell so TOC can sit on the left of the viewport */
body.has-notes-toc #content {
  max-width: 100%;
  width: 100%;
  padding-left: 0;
  padding-right: 0;
  box-sizing: border-box;
}

.reader-layout {
  --reader-inset-left: 0px;
  display: grid;
  grid-template-columns: var(--reader-inset-left) minmax(0, 1fr);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  transition: --reader-inset-left 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.reader-layout.toc-open {
  --reader-inset-left: calc(12px + 240px + 1.5rem);
}

.reader-article {
  --reader-font: var(--font-family);
  --reader-font-size: 12pt;
  --reader-line-height: 1.2;
  /* Page-relative max width (vw), not of the TOC column — opening TOC shifts, doesn't shrink */
  --reader-width: 80vw;
  grid-column: 2;
  width: min(100%, var(--reader-width));
  max-width: min(100%, var(--reader-width));
  min-width: 0;
  justify-self: center;
  box-sizing: border-box;
  padding-inline: 1.25rem;
  font-family: var(--reader-font);
  font-size: var(--reader-font-size);
  line-height: var(--reader-line-height);
  transition: width 0.2s ease, max-width 0.2s ease;
}

.reader-layout.toc-open .reader-article {
  justify-self: center;
}

.reader-article > h1 {
  text-align: center;
  margin-top: 0.5em;
  font-family: var(--reader-font);
}

.reader-article > h1,
.reader-article h2,
.reader-article h3,
.reader-article h4,
.reader-article h5,
.reader-article h6 {
  scroll-margin-top: 64px;
}

/* Backdrop: never on wide screens; overlay only when narrow */
.toc-backdrop {
  display: none !important;
  position: fixed;
  inset: 0;
  z-index: 35;
  background: var(--shadow-color);
  cursor: pointer;
  border: none;
  padding: 0;
  border-radius: 0;
  box-shadow: none;
  text-shadow: none;
  transform: none;
  overflow: visible;
  pointer-events: none;
}

.toc-backdrop::before {
  display: none;
}

.toc-backdrop:hover,
.toc-backdrop:active,
.toc-backdrop:hover:not(:disabled),
.toc-backdrop:active:not(:disabled) {
  background: var(--shadow-color);
  box-shadow: none;
  transform: none;
  color: inherit;
}

@media (max-width: 860px) {
  .toc-backdrop.is-visible {
    display: block !important;
    pointer-events: auto;
  }
}

.toc-panel {
  position: fixed;
  top: 56px;
  left: 12px;
  width: 240px;
  max-height: calc(100vh - 140px);
  overflow: auto;
  padding: 0.75rem 0.85rem;
  background: var(--background-light);
  border-radius: 10px;
  box-shadow: 0 2px 12px var(--shadow-color);
  z-index: 40;
  transform: translateX(0);
  transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.toc-panel.is-closed {
  transform: translateX(calc(-100% - 20px));
  pointer-events: none;
}

.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.toc-header h2 {
  margin: 0;
  font-size: 14pt;
  color: var(--main-color-light);
  text-align: left;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.toc-icon {
  display: block;
  flex-shrink: 0;
}

.toc-toggle,
.toc-edge-tab {
  width: 25px;
  padding: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-light);
}

.toc-toggle .toc-icon,
.toc-edge-tab .toc-icon {
  color: inherit;
}

.toc-empty {
  margin: 0;
  font-size: 0.9em;
  opacity: 0.75;
}

.toc-edge-tab {
  position: fixed;
  top: 52px;
  left: 12px;
  z-index: 45;
}

.toc-edge-tab[hidden] {
  display: none !important;
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-list a {
  display: block;
  padding: 0.3rem 0.4rem;
  border-radius: 6px;
  text-decoration: none;
  color: var(--main-color);
  line-height: 1.35;
}

.toc-list a:hover {
  background: var(--secondary-light);
}

.toc-list a.active {
  background: linear-gradient(to bottom, var(--main-color) 0%, var(--main-color-light) 100%);
  color: var(--secondary-color);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
}

.toc-level-1 {
  font-weight: 700;
  padding-left: 0.2rem;
}

.toc-level-2 {
  padding-left: 0.75rem;
  font-size: 0.95em;
}

.toc-level-3 {
  padding-left: 1.35rem;
  font-size: 0.9em;
}

.toc-level-4,
.toc-level-5,
.toc-level-6 {
  padding-left: 1.85rem;
  font-size: 0.85em;
}

/* Narrow: overlay mode — no reserved gutter, backdrop closes panel */
@media (max-width: 860px) {
  .reader-layout.toc-open {
    --reader-inset-left: 0px;
  }

  .toc-panel {
    top: 52px;
    left: 8px;
    width: 240px;
    max-width: calc(100vw - 16px);
    max-height: calc(100vh - 120px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reader-layout,
  .toc-panel,
  .toc-edge-tab,
  .reader-article {
    transition: none;
  }
}

/* Reading settings — top right on notes pages */
.settings-root {
  position: fixed;
  top: 52px;
  right: 12px;
  z-index: 50;
}

.settings-root #settings-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 25px;
  padding: 5px;
}

.settings-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: 240px;
  padding: 0.55rem 0.7rem 0.6rem;
  background: var(--background-light);
  color: var(--text-color);
  border-radius: 10px;
  box-shadow: 0 2px 12px var(--shadow-color);
  border: 1px solid color-mix(in srgb, var(--main-color) 20%, transparent);
}

.settings-menu[hidden] {
  display: none !important;
}

.settings-row {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) 2.75rem;
  column-gap: 0.65rem;
  row-gap: 0.3rem;
  align-items: center;
  margin-bottom: 0.35rem;
  font-size: 12px;
}

.settings-row:last-of-type {
  margin-bottom: 0.45rem;
}

.settings-row span {
  color: var(--main-color);
  font-weight: 600;
}

.settings-row em {
  font-style: normal;
  text-align: right;
  opacity: 0.85;
  font-variant-numeric: tabular-nums;
}

.settings-row input[type='range'] {
  width: 100%;
  accent-color: var(--main-color);
}

.settings-row select {
  grid-column: 2 / 4;
  font-family: var(--font-family);
  font-size: 12px;
  color: var(--text-color-dark);
  background: var(--background-color);
  border: 1px solid color-mix(in srgb, var(--main-color) 40%, transparent);
  border-radius: 6px;
  padding: 3px 5px;
}

.settings-reset {
  width: 100%;
  font-size: 12px !important;
  padding: 5px 10px !important;
  margin-top: 0.15rem;
  position: relative;
}

.settings-reset::before {
  display: none;
}

@media print {
  .toc-panel,
  .toc-edge-tab,
  .toc-backdrop,
  .settings-root {
    display: none !important;
  }

  .reader-layout.toc-open {
    --reader-inset-left: 0px;
  }
}