/* FNOTE — Essay Page Styles
   Footnote Mode, Margin Notes, Reactions
   ====================================== */

/* === ESSAY LAYOUT === */
.essay-wrapper {
  display: grid;
  grid-template-columns: 1fr min(680px, 100%) 1fr;
  padding: 64px 24px 120px;
}

.essay-wrapper > * {
  grid-column: 2;
}

@media (min-width: 1024px) {
  .essay-wrapper {
    grid-template-columns: 1fr min(680px, 65%) minmax(200px, 280px) 1fr;
    gap: 0 48px;
    padding: 64px 48px 120px;
  }
  
  .essay-wrapper > * {
    grid-column: 2;
  }
  
  .margin-notes-container {
    grid-column: 3;
    grid-row: 1 / 100;
    position: relative;
  }
}

/* === ESSAY HEADER === */
.essay-header {
  margin-bottom: 48px;
}

.essay-page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.essay-page-meta {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--ink-tertiary);
}

.essay-page-meta span::after {
  content: '·';
  margin: 0 8px;
}

.essay-page-meta span:last-child::after {
  display: none;
}

/* === ESSAY CONTENT === */
.essay-content {
  font-size: 1.125rem;
  line-height: 1.85;
}

.essay-content p {
  margin-bottom: 1.5em;
  position: relative;
}

.essay-content p:first-of-type::first-letter {
  font-size: 3.5em;
  float: left;
  line-height: 0.8;
  margin-right: 12px;
  margin-top: 8px;
  font-weight: 600;
  color: var(--accent-teal);
}

.essay-content blockquote {
  margin: 2em 0;
  padding: 1.5em 2em;
  background: var(--surface-secondary);
  border-left: 3px solid var(--accent-marigold);
  font-style: italic;
  color: var(--ink-secondary);
}

.essay-content em {
  font-style: italic;
}

.essay-content strong {
  font-weight: 600;
}

/* Horizontal rule */
.essay-content hr {
  border: none;
  height: 1px;
  background: var(--border-subtle);
  margin: 3em auto;
  width: 80px;
}

/* === FOOTNOTE SUPERSCRIPTS === */
.footnote-ref {
  font-size: 0.75em;
  vertical-align: super;
  color: var(--accent-teal);
  cursor: pointer;
  padding: 2px 4px;
  margin: 0 2px;
  border-radius: 2px;
  transition: all var(--duration-fast);
}

.footnote-ref:hover {
  background: var(--accent-teal-muted);
}

[data-footnote-mode="off"] .footnote-ref {
  color: var(--ink-tertiary);
  cursor: default;
}

[data-footnote-mode="off"] .footnote-ref:hover {
  background: transparent;
}

/* === MARGIN NOTES === */
.margin-note {
  display: none;
  position: absolute;
  left: 0;
  width: 100%;
  padding: 16px 20px;
  background: var(--surface-elevated);
  border-left: 3px solid var(--accent-marigold);
  border-radius: 0 6px 6px 0;
  box-shadow: 0 4px 16px var(--shadow-medium);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--ink-secondary);
  animation: marginNoteIn var(--duration-normal) var(--ease-out-soft);
  z-index: 50;
}

.margin-note.active {
  display: block;
}

.margin-note-number {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-marigold);
  margin-right: 8px;
}

.margin-note-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--ink-tertiary);
  cursor: pointer;
  border-radius: 4px;
}

.margin-note-close:hover {
  background: var(--surface-secondary);
  color: var(--ink-primary);
}

@keyframes marginNoteIn {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Desktop: Side margin notes */
@media (min-width: 1024px) {
  .margin-notes-container {
    padding-top: 120px;
  }
  
  .margin-note {
    position: relative;
    display: none;
    margin-bottom: 24px;
    box-shadow: none;
    border-radius: 0;
    background: transparent;
    padding: 0 0 0 20px;
  }
  
  .margin-note.active {
    display: block;
  }
  
  .margin-note-close {
    display: none;
  }
}

/* Mobile: Bottom sheet style */
@media (max-width: 1023px) {
  .margin-note {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    border-radius: 16px 16px 0 0;
    border-left: none;
    border-top: 3px solid var(--accent-marigold);
    padding: 24px;
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    max-height: 50vh;
    overflow-y: auto;
  }
}

/* === FOOTNOTE MODE TOGGLE === */
.footnote-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--surface-elevated);
  border: 1px solid var(--border-visible);
  border-radius: 24px;
  box-shadow: 0 4px 16px var(--shadow-medium);
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: all var(--duration-fast);
  z-index: 100;
}

.footnote-toggle:hover {
  border-color: var(--accent-teal);
}

.footnote-toggle-icon {
  font-size: 1rem;
}

.footnote-toggle-switch {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 20px;
  background: var(--border-visible);
  border-radius: 10px;
  position: relative;
  transition: background var(--duration-fast);
}

.footnote-toggle-switch::after {
  content: '';
  position: absolute;
  left: 2px;
  width: 16px;
  height: 16px;
  background: var(--surface-elevated);
  border-radius: 50%;
  transition: transform var(--duration-fast);
}

[data-footnote-mode="on"] .footnote-toggle-switch {
  background: var(--accent-teal);
}

[data-footnote-mode="on"] .footnote-toggle-switch::after {
  transform: translateX(16px);
}

/* === MARGIN REACTIONS === */
.margin-reactions {
  display: none;
  position: absolute;
  right: -80px;
  top: 0;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  color: var(--ink-tertiary);
}

@media (min-width: 1200px) {
  .margin-reactions {
    display: flex;
  }
}

.reaction {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: transparent;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--duration-fast);
  opacity: 0.6;
}

.reaction:hover {
  opacity: 1;
  background: var(--accent-marigold-muted);
}

.reaction.active {
  opacity: 1;
  color: var(--accent-marigold);
}

.reaction-emoji {
  font-size: 0.875rem;
}

.reaction-count {
  min-width: 14px;
}

/* Mobile reactions: End of essay */
.essay-reactions-mobile {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

@media (min-width: 1200px) {
  .essay-reactions-mobile {
    display: none;
  }
}

.essay-reactions-mobile .reaction {
  opacity: 1;
  border: 1px solid var(--border-subtle);
}

/* === HIGHLIGHT TO SHARE === */
.quote-card {
  position: absolute;
  display: none;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  background: var(--surface-elevated);
  border: 1px solid var(--border-visible);
  border-radius: 8px;
  box-shadow: 0 8px 32px var(--shadow-medium);
  max-width: 320px;
  z-index: 200;
  animation: quoteCardIn var(--duration-normal) var(--ease-out-soft);
}

.quote-card.active {
  display: flex;
}

@keyframes quoteCardIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.quote-card-text {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--ink-primary);
}

.quote-card-text::before {
  content: '"';
  color: var(--accent-marigold);
}

.quote-card-text::after {
  content: '"';
  color: var(--accent-marigold);
}

.quote-card-actions {
  display: flex;
  gap: 8px;
}

.quote-card-btn {
  flex: 1;
  padding: 8px 12px;
  background: var(--surface-secondary);
  border: none;
  border-radius: 6px;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.quote-card-btn:hover {
  background: var(--accent-teal-muted);
  color: var(--accent-teal);
}

.quote-card-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--ink-tertiary);
  cursor: pointer;
  border-radius: 4px;
}

.quote-card-close:hover {
  background: var(--surface-secondary);
}

/* === ESSAY FOOTER === */
.essay-footer {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}

.essay-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.essay-nav-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--ink-tertiary);
  text-decoration: none;
}

.essay-nav-link span {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--ink-primary);
}

.essay-nav-link:hover span {
  color: var(--accent-teal);
}

.essay-share {
  display: flex;
  gap: 12px;
}

.essay-share-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-secondary);
  border: none;
  border-radius: 50%;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.essay-share-btn:hover {
  background: var(--accent-teal-muted);
  color: var(--accent-teal);
}

.essay-share-btn svg {
  width: 18px;
  height: 18px;
}