/* ============================================================
   JSON Editor — Monaco-based, clean & airy
   ============================================================ */

/* ---------- Theme tokens ---------- */
:root,
[data-theme="dark"] {
  --bg: #1e1e1e;
  --surface: #252526;
  --surface-2: #2d2d2d;
  --border: #3c3c3c;
  --border-2: #4a4a4a;
  --ink: #d4d4d4;
  --ink-2: #a8a8a8;
  --ink-3: #808080;
  --ink-4: #5a5a5a;
  --accent: #4a9eff;
  --accent-soft: rgba(74, 158, 255, 0.14);
  --good: #4ec9b0;
  --bad: #f14c4c;
  --warn: #d7ba7d;

  --c-key: #9cdcfe;
  --c-string: #ce9178;
  --c-number: #b5cea8;
  --c-bool: #569cd6;
  --c-null: #569cd6;
  --c-brace: #808080;

  --row-hover: rgba(255, 255, 255, 0.035);
  --shadow: 0 4px 20px -8px rgba(0, 0, 0, 0.6);
  --monaco-theme: vs-dark;
}

[data-theme="light"] {
  --bg: #ffffff;
  --surface: #f8f8f8;
  --surface-2: #f0f0f0;
  --border: #e4e4e4;
  --border-2: #d4d4d4;
  --ink: #242424;
  --ink-2: #555555;
  --ink-3: #888888;
  --ink-4: #b0b0b0;
  --accent: #0a6ffb;
  --accent-soft: rgba(10, 111, 251, 0.10);
  --good: #1a9f7e;
  --bad: #d12424;
  --warn: #b8860b;

  --c-key: #0451a5;
  --c-string: #a31515;
  --c-number: #098658;
  --c-bool: #0000ff;
  --c-null: #823e9e;
  --c-brace: #888888;

  --row-hover: rgba(0, 0, 0, 0.03);
  --shadow: 0 4px 20px -10px rgba(0, 0, 0, 0.18);
  --monaco-theme: vs;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
}
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; padding: 0; }
svg { display: block; }
::selection { background: var(--accent-soft); }
/* ensure [hidden] always wins over any display rule */
[hidden] { display: none !important; }

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex; align-items: center; gap: 16px;
  padding: 0 16px; height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 5;
}
.brand { display: flex; align-items: center; gap: 9px; }
.brand__brace {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-weight: 700; color: var(--accent); font-size: 16px;
  background: var(--accent-soft); padding: 3px 8px; border-radius: 6px;
}
.brand__name { font-weight: 600; font-size: 14px; letter-spacing: -0.01em; }

.seg {
  display: flex; gap: 1px; padding: 3px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 7px;
}
.seg__btn {
  padding: 5px 14px; font-size: 12px; font-weight: 500; color: var(--ink-3);
  border-radius: 5px; transition: all .15s;
}
.seg__btn:hover { color: var(--ink-2); }
.seg__btn.is-active { color: var(--ink); background: var(--surface-2); box-shadow: 0 1px 2px rgba(0,0,0,0.2); }

.actions { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.divider { width: 1px; height: 22px; background: var(--border); margin: 0 4px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 13px; font-size: 12px; font-weight: 500; color: var(--ink-2);
  background: var(--surface); border: 1px solid var(--border); border-radius: 7px;
  white-space: nowrap; transition: all .13s;
}
.btn:hover { color: var(--ink); border-color: var(--border-2); background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn.sm { padding: 4px 10px; font-size: 11px; }
.btn--primary { color: #fff; background: var(--accent); border-color: var(--accent); }
.btn--primary:hover { background: var(--accent); filter: brightness(1.08); color: #fff; }

.iconbtn {
  width: 32px; height: 32px; display: grid; place-items: center; border-radius: 7px;
  color: var(--ink-3); border: 1px solid var(--border); background: var(--surface);
  transition: all .13s;
}
.iconbtn:hover { color: var(--ink); border-color: var(--border-2); background: var(--surface-2); }
.iconbtn.sm { width: 26px; height: 26px; border-radius: 6px; }

/* zoom control group */
.zoom { display: flex; align-items: center; gap: 4px; }
.zoom__label {
  min-width: 26px; text-align: center; font-size: 11px; color: var(--ink-2);
  font-variant-numeric: tabular-nums; user-select: none; cursor: default;
}

.i-moon { display: none; }
[data-theme="light"] .i-sun { display: none; }
[data-theme="light"] .i-moon { display: block; }

/* ---------- Workspace ---------- */
.workspace { position: relative; min-height: 0; overflow: hidden; background: var(--bg); }
.code-pane, .tree-pane { position: absolute; inset: 0; display: flex; flex-direction: column; min-height: 0; }

/* ---------- Monaco container ---------- */
.editor { flex: 1; min-height: 0; width: 100%; }

.dropzone {
  position: absolute; inset: 12px; z-index: 8; border: 2px dashed var(--accent);
  border-radius: 12px; display: grid; place-content: center; gap: 10px; justify-items: center;
  background: var(--accent-soft); color: var(--accent); font-size: 13px; font-weight: 600;
  pointer-events: none; backdrop-filter: blur(2px);
}

/* ---------- Tree mode ---------- */
.tree-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 0 14px; height: 40px; flex: 0 0 auto;
  border-bottom: 1px solid var(--border); background: var(--surface);
}
.tree-bar__crumbs { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--ink-3); overflow: hidden; }
.crumb { white-space: nowrap; }
.crumb--root { color: var(--accent); font-weight: 700; }
.crumb__sep { color: var(--ink-4); }
.tree-bar__actions { display: flex; gap: 6px; }

.tree-scroll { flex: 1; overflow: auto; padding: 8px 4px 60px; }
.tree { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: 13px; line-height: 1.8; padding: 4px 12px; }

.t-row {
  display: flex; align-items: center; gap: 0; padding: 1px 6px; border-radius: 5px;
  position: relative; transition: background .1s;
}
.t-row:hover { background: var(--row-hover); }
.t-row.is-edited { background: var(--accent-soft); box-shadow: inset 2px 0 0 var(--accent); }

.t-toggle {
  width: 16px; flex: 0 0 auto; display: inline-grid; place-items: center;
  color: var(--ink-3); transition: transform .12s; user-select: none; cursor: pointer;
}
.t-row.is-collapsed .t-toggle { transform: rotate(-90deg); }
.t-toggle--leaf { visibility: hidden; }

.t-indent { white-space: pre; color: transparent; }
.t-key { color: var(--c-key); cursor: text; }
.t-key:hover { text-decoration: underline; text-decoration-color: var(--ink-4); }
.t-idx { color: var(--ink-3); }
.t-colon { color: var(--ink-3); margin: 0 7px 0 2px; }
.t-val { color: var(--ink); }
.t-val--string { color: var(--c-string); }
.t-val--number { color: var(--c-number); }
.t-val--bool { color: var(--c-bool); }
.t-val--null { color: var(--c-null); font-style: italic; }
.t-brace { color: var(--c-brace); font-weight: 600; }
.t-summary { color: var(--ink-3); font-size: 11px; margin-left: 8px; }
.t-row:not(.is-collapsed) .t-summary { display: none; }

.t-children { overflow: hidden; }
.t-row.is-collapsed + .t-children { display: none; }

.t-actions { opacity: 0; transition: opacity .1s; display: inline-flex; gap: 3px; margin-left: 8px; }
.t-row:hover .t-actions { opacity: 1; }
.t-mini {
  font-family: inherit; font-size: 10.5px; color: var(--ink-3); padding: 1px 7px;
  border: 1px solid var(--border-2); border-radius: 4px; background: var(--surface);
  transition: all .1s;
}
.t-mini:hover { color: var(--accent); border-color: var(--accent); }

/* inline edit input */
.t-edit {
  font-family: inherit; font-size: 13px; padding: 1px 5px; margin: 0;
  background: var(--bg); color: var(--ink); border: 1px solid var(--accent);
  border-radius: 4px; outline: none; min-width: 60px; max-width: 320px;
}
.t-edit--key { color: var(--c-key); }

.t-empty { color: var(--ink-3); padding: 24px; text-align: center; font-size: 13px; }

/* ---------- Statusbar ---------- */
.statusbar {
  display: flex; align-items: center; gap: 14px;
  padding: 0 16px; height: 28px; font-size: 11.5px; color: var(--ink-3);
  background: var(--surface); border-top: 1px solid var(--border);
}
.status__group { display: flex; align-items: center; gap: 7px; }
.status__stats { margin-right: auto; }
.status__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ink-4); }
.status__dot.is-good { background: var(--good); box-shadow: 0 0 7px var(--good); }
.status__dot.is-bad { background: var(--bad); box-shadow: 0 0 7px var(--bad); }
.status__dot.is-warn { background: var(--warn); box-shadow: 0 0 7px var(--warn); }
.stat b { color: var(--ink); font-weight: 600; }
.statsep { color: var(--ink-4); }
.status__hint { color: var(--ink-4); }
kbd {
  font-family: inherit; font-size: 10px; padding: 1px 5px; border: 1px solid var(--border-2);
  border-radius: 3px; background: var(--bg); color: var(--ink-2); margin: 0 1px;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 44px; left: 50%; transform: translateX(-50%) translateY(16px);
  z-index: 100; padding: 9px 18px; font-size: 12.5px; font-weight: 500;
  background: var(--ink); color: var(--bg); border-radius: 8px;
  box-shadow: var(--shadow); opacity: 0; transition: all .22s ease; pointer-events: none;
}
.toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.is-error { background: var(--bad); color: #fff; }

/* ---------- Scrollbars (tree only; Monaco has its own) ---------- */
.tree-scroll * { scrollbar-width: thin; scrollbar-color: var(--border-2) transparent; }
.tree-scroll ::-webkit-scrollbar { width: 11px; height: 11px; }
.tree-scroll ::-webkit-scrollbar-track { background: transparent; }
.tree-scroll ::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 6px; border: 3px solid var(--bg); }
.tree-scroll ::-webkit-scrollbar-thumb:hover { background: var(--ink-4); }

/* ---------- Entrance ---------- */
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.toolbar, .workspace, .statusbar { animation: rise .35s ease both; }
.workspace { animation-delay: .04s; }
.statusbar { animation-delay: .08s; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .brand__name { display: none; }
  .status__hint { display: none; }
  .btn { padding: 7px 9px; }
}