/* ==========================================================================
   JsonDiff — two-pane VS Code-style compare. Pairs with diff-engine.js.
   Inherits tokens from ../css/protium-ui.css
   Diff semantics:  Keys → amber · Types → blue · Values → coral
   ========================================================================== */
.cmp {
  --d-key: #f5a623;
  --d-type: #3b82f6;
  --d-value: #ef5a6f;
  flex: 1; min-height: 0; display: flex; flex-direction: column;
}

/* ---- toolbar ------------------------------------------------------------ */
.cmp-bar {
  flex: none; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 10px 18px; background: var(--nav); border-bottom: 1px solid var(--border);
}
.cmp-bar .spacer { flex: 1 1 auto; }
.cmp-opts { display: flex; gap: 14px; padding-left: 6px; }
.cmp-opts label { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--text-muted); cursor: pointer; user-select: none; }
.cmp-opts input { accent-color: var(--accent); margin: 0; }

.cmp-summary { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.cmp-mode {
  font-size: 11px; font-weight: 600; letter-spacing: 0.03em; text-transform: uppercase;
  color: var(--text-muted); background: var(--surface-3); border: 1px solid var(--border);
  padding: 3px 9px; border-radius: 5px;
}
.cmp-count { font-size: 13.5px; color: var(--text-muted); }
.cmp-count b { color: var(--text); }
.cmp-text { font-size: 13px; color: var(--text-muted); font-family: var(--font-mono); }
.cmp-text .cmp-add-c { color: var(--ok); }
.cmp-text .cmp-del-c { color: var(--bad); }
.cmp-filters { display: flex; gap: 6px; }
.cmp-f {
  font: inherit; font-size: 12.5px; color: var(--text-faint); cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px;
  padding: 4px 11px; transition: opacity var(--t), color var(--t);
}
.cmp-f b { color: var(--text); margin-left: 4px; }
.cmp-f:not(.is-on) { opacity: 0.45; text-decoration: line-through; }
.cmp-f-key.is-on    { border-color: var(--d-key);   color: var(--d-key); }
.cmp-f-type.is-on   { border-color: var(--d-type);  color: var(--d-type); }
.cmp-f-value.is-on  { border-color: var(--d-value); color: var(--d-value); }

.cmp-nav { display: flex; align-items: center; gap: 8px; }
.cmp-nav button {
  font: inherit; width: 28px; height: 28px; line-height: 1; color: var(--text-muted);
  background: var(--surface-3); border: 1px solid var(--border); border-radius: var(--r-sm); cursor: pointer;
}
.cmp-nav button:hover { color: var(--text); border-color: var(--border-strong); }
.cmp-pos { font-size: 12px; color: var(--text-faint); font-family: var(--font-mono); min-width: 48px; text-align: center; }

/* ---- panes: two large editors side by side ------------------------------ */
.cmp-panes { flex: 1; min-height: 0; display: grid; grid-template-columns: 1fr 1fr; }
.cmp-pane { min-width: 0; display: flex; flex-direction: column; border-right: 1px solid var(--border); }
.cmp-pane:last-child { border-right: 0; }
.cmp-pane-head {
  flex: none; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 8px 14px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.cmp-label { font-size: 12.5px; font-weight: 600; letter-spacing: 0.03em; text-transform: uppercase; color: var(--text-muted); }
.cmp-actions { display: flex; gap: 6px; }
.jd-mini {
  font: inherit; font-size: 12px; color: var(--text-muted);
  background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--r-sm);
  padding: 4px 9px; cursor: pointer; transition: border-color var(--t), color var(--t);
}
.jd-mini:hover { color: var(--text); border-color: var(--border-strong); }
.cmp-err { display: none; padding: 7px 14px; font-family: var(--font-mono); font-size: 12px; color: var(--bad); background: var(--bad-soft); border-bottom: 1px solid var(--bad-border); }
.cmp-err.is-show { display: block; }
.cmp-err.is-note { color: var(--text-muted); background: var(--surface-2); border-bottom-color: var(--border); }

.cmp-cm { position: relative; flex: 1; min-height: 0; }
.cmp-cm .CodeMirror {
  position: absolute; inset: 0; height: 100%;
  background: var(--field); font-family: var(--font-mono); font-size: 13px; line-height: 1.7; border: 0;
}

/* ---- in-editor diff line highlights ------------------------------------- */
.cmp-key    { background: rgba(245, 166, 35, 0.14);  box-shadow: inset 3px 0 0 var(--d-key); }
.cmp-type   { background: rgba(59, 130, 246, 0.16);  box-shadow: inset 3px 0 0 var(--d-type); }
.cmp-value  { background: rgba(239, 90, 111, 0.16);  box-shadow: inset 3px 0 0 var(--d-value); }
/* line diff (any code) */
.cmp-add    { background: rgba(47, 191, 108, 0.15);  box-shadow: inset 3px 0 0 var(--ok); }
.cmp-del    { background: rgba(239, 90, 111, 0.15);  box-shadow: inset 3px 0 0 var(--bad); }
.cmp-focus  { outline: 1px solid var(--accent); outline-offset: -1px; }

@media (max-width: 860px) {
  .cmp-panes { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
  .cmp-pane { border-right: 0; border-bottom: 1px solid var(--border); }
}