/* Settings trigger */
.settings-trigger {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color var(--transition-speed) ease;
}
.settings-trigger:hover { color: var(--text-accent); }

/* Overlay + drawer as siblings at body level */
.settings-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}
.settings-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.settings-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  max-width: 90vw;
  background: var(--bg-secondary);
  border-left: var(--border-width) solid var(--border-primary);
  z-index: 1000;
  padding: 1.5rem;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 250ms ease;
}
.settings-drawer.open {
  transform: translateX(0);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: var(--border-width) solid var(--border-primary);
}

.settings-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.settings-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}
.settings-close:hover { color: var(--text-accent); }

.settings-group { margin-bottom: 1.25rem; }

.settings-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.settings-value {
  color: var(--text-accent);
  font-size: 0.75rem;
}

.settings-toggle-row { display: flex; gap: 4px; }

.settings-opt {
  flex: 1;
  padding: 6px 8px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  background: transparent;
  border: var(--border-width) solid var(--border-primary);
  border-radius: var(--border-radius);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  text-align: center;
}
.settings-opt:hover { border-color: var(--text-accent); color: var(--text-accent); }
.settings-opt.active {
  background: var(--glow-color);
  border-color: var(--text-accent);
  color: var(--text-accent);
}

.settings-range {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border-primary);
  border-radius: 2px;
  outline: none;
}
.settings-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--text-accent);
  cursor: pointer;
  border: 2px solid var(--bg-secondary);
}

.settings-check {
  width: 16px;
  height: 16px;
  accent-color: var(--text-accent);
  cursor: pointer;
}

.settings-divider {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 0.75rem 0 0.5rem;
  margin-bottom: 0.75rem;
  border-top: var(--border-width) solid var(--border-primary);
}

.settings-reset-row { padding-top: 0.5rem; border-top: var(--border-width) solid var(--border-primary); }
.settings-reset {
  width: 100%;
  padding: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: transparent;
  border: var(--border-width) solid var(--border-primary);
  border-radius: var(--border-radius);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
}
.settings-reset:hover { border-color: var(--text-accent); color: var(--text-accent); }

/* Paragraph indent option */
.opt-paragraph-indent .post-body p + p {
  text-indent: 1.5em;
}

/* ======= SIDENOTE MODE ======= */

/* Sidenote layout: post slightly left of center, sidenote in right margin */
.explain-sidenote-mode .post-container {
  max-width: none;
  padding-left: max(1.5rem, calc(50vw - var(--max-width) * 0.6));
  padding-right: 1.5rem;
  position: relative;
}

.explain-sidenote-mode .post {
  max-width: var(--max-width);
}

/* Sidenote: fixed to the right gutter, positioned by JS */
.explain-sidenote {
  position: absolute;
  width: min(280px, calc(100vw - var(--max-width) - 120px));
  min-width: 180px;
  padding: 12px 16px;
  background: var(--bg-card);
  border-left: 3px solid var(--text-accent);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-secondary);
  opacity: 0;
  transition: opacity 300ms ease;
  z-index: 50;
}
.explain-sidenote.visible { opacity: 1; }
.explain-sidenote code { font-size: 0.8em; }

/* Connector line: horizontal line on the LEFT of the term */
.explain-connector {
  position: absolute;
  height: 2px;
  background: var(--text-accent);
  pointer-events: none;
  opacity: 0;
  transition: opacity 300ms ease;
  border-radius: 1px;
}
.explain-connector.visible { opacity: 1; }

/* Responsive: on narrow screens, sidenote overlaps but stays visible */
@media (max-width: 900px) {
  .explain-sidenote-mode .post-container {
    display: block;
    max-width: var(--max-width);
  }
  .explain-sidenote {
    width: min(240px, 40vw);
    min-width: 160px;
  }
}

/* Very narrow: fall back to popover */
@media (max-width: 600px) {
  .explain-sidenote,
  .explain-connector { display: none !important; }
}