/* ==========================================================================
   Object page — unified writing surface.
   Grid: writing column + 380px right rail. Top bar floats above both.
   Class prefix: .op-
   ========================================================================== */

.op-main {
  padding: 0;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

.op-root {
  position: relative;
  height: 100%;
  display: grid;
  grid-template-columns: 1fr 380px;
  background: var(--bg0);
  color: var(--ink);
  font-family: var(--serif);
}

/* --- Top bar ------------------------------------------------------------- */

.op-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  z-index: 2;
  display: flex;
  align-items: center;
  padding: 0 40px;
  border-bottom: 1px solid var(--line);
  background: var(--bg0);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-low);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.op-top .crumb { color: var(--ink-mid); }
.op-top .crumb em {
  font-family: var(--serif);
  font-style: italic;
  text-transform: none;
  letter-spacing: 0;
  font-size: 14px;
  color: var(--ink);
}

.op-top .right {
  margin-left: auto;
  display: flex;
  gap: 20px;
}

.op-top .right .saved {
  color: var(--accent);
}

/* --- Writing column ------------------------------------------------------ */

.op-write {
  padding: 88px 72px 60px;
  overflow: auto;
}

.op-kicker {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: 14px;
}

.op-title {
  font-family: var(--serif);
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 10px;
  text-wrap: balance;
  color: var(--ink);
  outline: none;
}

.op-title:empty::before,
.op-sub:empty::before,
.op-prose:empty::before {
  content: attr(data-placeholder);
  color: var(--ink-faint);
  pointer-events: none;
}

.op-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 19px;
  color: var(--ink-mid);
  margin: 0 0 40px;
  outline: none;
}

.op-meta {
  display: flex;
  gap: 28px;
  padding: 12px 0 22px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  flex-wrap: wrap;
}

.op-meta .chip {
  color: var(--accent);
}

/* --- Prose --------------------------------------------------------------- */

.op-prose {
  max-width: 620px;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.75;
  color: var(--ink);
  text-wrap: pretty;
  letter-spacing: -0.003em;
  outline: none;
  min-height: 4em;
}

.op-prose p { margin: 0 0 1.1em; }

.op-prose h2,
.op-prose h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 1.2em 0 0.4em;
}

.op-prose h2 { font-size: 26px; }
.op-prose h3 { font-size: 21px; }

.op-prose blockquote.inserted-highlight {
  border-left: 2px solid var(--accent);
  padding: 8px 14px;
  margin: 18px 0;
  background: oklch(from var(--accent) l c h / 0.10);
  font-style: italic;
  color: var(--ink-mid);
}

.op-prose blockquote.inserted-highlight cite {
  display: block;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 10px;
  font-style: normal;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.op-prose .cite {
  background: oklch(from var(--accent) l c h / 0.15);
  border-bottom: 1px solid var(--accent);
  padding: 0 3px;
}

.op-cursor {
  display: inline-block;
  width: 2px;
  height: 0.95em;
  background: var(--accent);
  vertical-align: -2px;
  animation: op-blink 1s steps(2) infinite;
}

@keyframes op-blink {
  50% { opacity: 0; }
}

/* --- Right rail ---------------------------------------------------------- */

.op-rail {
  border-left: 1px solid var(--line);
  padding: 72px 24px 32px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--bg0);
}

.op-rail h4 {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin: 0 0 10px;
  font-weight: 400;
}

.op-block { display: block; }

.op-empty {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink-faint);
  padding: 6px 0;
}

/* --- Search -------------------------------------------------------------- */

.op-search {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg1);
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mid);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  outline: none;
}

.op-search::placeholder {
  color: var(--ink-faint);
}

.op-search::before {
  content: '\2318K  ';
  color: var(--ink-faint);
}

.op-search-results {
  display: flex;
  flex-direction: column;
}

.op-search-row { cursor: pointer; }
.op-search-row:hover .q { color: var(--ink); }

/* --- Highlight rows ------------------------------------------------------ */

.op-hl {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.op-hl .q {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-mid);
  text-wrap: pretty;
}

.op-hl .m {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.op-hl .m em {
  font-family: var(--serif);
  font-style: italic;
  text-transform: none;
  letter-spacing: 0;
  font-size: 12px;
  color: var(--ink-mid);
}

.op-hl .op-action {
  cursor: pointer;
  color: var(--ink-faint);
  transition: color 0.15s;
}

.op-hl .op-action:hover {
  color: var(--accent);
}

.op-hl.cited {
  position: relative;
  padding-left: 14px;
}

.op-hl.cited::before {
  content: '\25C6';
  position: absolute;
  left: 0;
  top: 16px;
  color: var(--accent);
  font-size: 10px;
}

.op-hl.cited .q {
  color: var(--ink);
}

/* --- Tag chips ----------------------------------------------------------- */

.op-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.op-chip {
  font-family: var(--mono);
  font-size: 10px;
  padding: 4px 9px;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.2;
}

.op-chip.add {
  border-style: dashed;
  color: var(--ink-low);
  border-color: var(--line-strong);
  cursor: pointer;
}

.op-chip.add::before {
  content: '+ ';
}

/* --- Linked objects ------------------------------------------------------ */

.op-linked {
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: var(--bg0);
  cursor: pointer;
  margin-bottom: 8px;
  transition: background 0.15s, border-color 0.15s;
}

.op-linked:hover {
  background: var(--bg1);
  border-color: var(--line-strong);
}

.op-linked .t {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink);
}

.op-linked .m {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}