:root {
  color-scheme: dark;
  --bg: #0b0f14;
  --panel: #111821;
  --panel-2: #151e29;
  --border: #243140;
  --text: #dce6ef;
  --muted: #8495a6;
  --accent: #63e6be;
  --accent-dark: #163f39;
  --blue: #74a7ff;
  --yellow: #e7c873;
  --red: #ff7b86;
  --purple: #c49bff;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% -10%, #142d35 0, transparent 35%),
    var(--bg);
  color: var(--text);
}

button, input, textarea { font: inherit; }
button, .file-button { -webkit-tap-highlight-color: transparent; }
button:focus-visible, input:focus-visible, textarea:focus-visible, .file-button:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.topbar {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--border);
  background: #0b0f14dc;
}

.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid #31534e;
  border-radius: 13px;
  color: var(--accent);
  background: #12251f;
  font: 700 18px var(--mono);
}
h1 { margin: 0; font-size: 22px; letter-spacing: -0.4px; }
.brand p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.privacy { color: var(--muted); font-size: 13px; white-space: nowrap; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--accent); }

.workspace {
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(400px, 1.2fr);
  gap: 18px;
  width: min(1600px, 100%);
  margin: 0 auto;
  padding: 24px clamp(14px, 3vw, 40px);
}
.panel {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: 0 18px 50px #0003;
}
.editor-panel { padding: 22px; align-self: start; }
.tree-panel { display: flex; flex-direction: column; min-height: 680px; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 17px; }
.tree-heading { padding: 0 22px; margin-top: 22px; margin-bottom: 15px; }
.eyebrow { display: block; margin-bottom: 5px; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: 1.6px; }
h2 { margin: 0; font-size: 17px; }
.muted { color: var(--muted); font-size: 12px; }

#json-input {
  display: block;
  width: 100%;
  height: 480px;
  resize: vertical;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #0b1118;
  color: #d9e5ee;
  caret-color: var(--accent);
  font: 13px/1.65 var(--mono);
  tab-size: 2;
}
#json-input::placeholder { color: #536474; }
#json-input.invalid { border-color: #7e3541; }
.input-error { margin-top: 10px; padding: 11px 13px; border: 1px solid #68323b; border-radius: 8px; background: #2a171c; color: #ffb0b7; font: 12px/1.5 var(--mono); white-space: pre-wrap; }

.editor-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 14px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 650;
}
.button.primary { background: var(--accent); color: #08251c; }
.button.primary:hover { background: #8aefd0; }
.button.secondary { border-color: var(--border); background: var(--panel-2); color: var(--text); }
.button.secondary:hover { border-color: #40556a; background: #1b2734; }
.file-button input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.minor-actions { margin-top: 10px; }
.text-button { padding: 2px 0; border: 0; background: none; color: var(--blue); cursor: pointer; font-size: 12px; }
.text-button:hover { text-decoration: underline; }
.drop-zone { margin-top: 18px; padding: 16px; border: 1px dashed #344556; border-radius: 9px; color: var(--muted); text-align: center; font-size: 12px; transition: 0.15s; }
.drop-zone.dragging { border-color: var(--accent); background: var(--accent-dark); color: var(--accent); }

.tree-toolbar { display: flex; gap: 8px; padding: 0 22px 15px; border-bottom: 1px solid var(--border); }
.search-box { flex: 1; }
#search-input { width: 100%; height: 36px; padding: 8px 11px; border: 1px solid var(--border); border-radius: 8px; background: #0c131b; color: var(--text); font-size: 12px; }
#search-input:disabled { opacity: 0.5; }
.icon-button { width: 36px; height: 36px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel-2); color: var(--text); cursor: pointer; font-size: 20px; line-height: 1; }
.icon-button:disabled { opacity: 0.35; cursor: default; }
.tree-output { flex: 1; min-height: 400px; max-height: 700px; overflow: auto; padding: 17px 20px; font: 12px/1.75 var(--mono); }
.empty-state { display: grid; place-content: center; min-height: 380px; text-align: center; color: var(--muted); }
.empty-icon { margin-bottom: 8px; color: #3c5664; font-size: 44px; }
.empty-state h3 { margin: 0 0 7px; color: #b6c5d1; font: 600 15px system-ui, sans-serif; }
.empty-state p { margin: 0; font: 12px system-ui, sans-serif; }

.tree-root, .tree-children { margin: 0; padding: 0; list-style: none; }
.tree-children { margin-left: 10px; padding-left: 15px; border-left: 1px solid #263644; }
.tree-node { position: relative; }
.tree-row { display: flex; align-items: flex-start; min-height: 25px; border-radius: 5px; }
.tree-row:hover { background: #17232e; }
.tree-row.selected { background: #16312f; }
.toggle { flex: 0 0 22px; align-self: stretch; padding: 0; border: 0; background: transparent; color: var(--muted); cursor: pointer; font: 12px var(--mono); }
.toggle.placeholder { cursor: default; }
.node-content { display: inline; padding: 1px 4px; border: 0; background: transparent; color: inherit; cursor: pointer; text-align: left; font: inherit; white-space: normal; overflow-wrap: anywhere; }
.node-key { color: var(--blue); }
.node-colon { color: #718397; margin-right: 6px; }
.node-string { color: var(--accent); }
.node-number { color: var(--yellow); }
.node-boolean { color: var(--purple); }
.node-null { color: #7b8c9b; font-style: italic; }
.node-preview { color: var(--muted); }
mark { padding: 0 1px; border-radius: 2px; background: #705c20; color: #fff2ba; }
.search-results { max-height: 180px; overflow: auto; padding: 10px 20px; border-bottom: 1px solid var(--border); background: #0d141c; }
.search-result { display: block; width: 100%; padding: 5px 7px; border: 0; border-radius: 4px; background: none; color: #aebdca; cursor: pointer; text-align: left; font: 11px/1.5 var(--mono); overflow-wrap: anywhere; }
.search-result:hover { background: #1a2834; color: var(--text); }
.path-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 20px; border-top: 1px solid var(--border); background: #0d141c; }
.path-label { display: block; margin-bottom: 3px; color: var(--muted); font-size: 9px; letter-spacing: 1px; }
#selected-path { color: var(--accent); font-size: 11px; overflow-wrap: anywhere; }
.path-actions { display: flex; flex: 0 0 auto; flex-direction: column; align-items: flex-end; gap: 5px; }

footer { display: flex; justify-content: space-between; gap: 20px; padding: 0 clamp(18px, 4vw, 56px) 24px; color: #657788; font-size: 11px; }
.toast { color: var(--accent); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
[hidden] { display: none !important; }

@media (max-width: 900px) {
  .workspace { grid-template-columns: 1fr; }
  #json-input { height: 340px; }
  .tree-panel { min-height: 520px; }
  .tree-output { max-height: 600px; }
}
@media (max-width: 560px) {
  .topbar { align-items: flex-start; padding: 16px; }
  .privacy { font-size: 0; }
  .privacy .status-dot { margin-top: 9px; }
  .workspace { padding: 12px 9px 20px; }
  .editor-panel { padding: 16px; }
  .tree-heading, .tree-toolbar { padding-left: 14px; padding-right: 14px; }
  .tree-output { padding: 12px 9px; }
  .tree-children { margin-left: 5px; padding-left: 10px; }
  .path-bar { align-items: flex-start; flex-direction: column; }
  .path-actions { align-items: flex-start; }
  footer { padding: 0 14px 18px; }
}