:root {
  --bg: #F6F5F1;
  --surface: #FFFFFF;
  --surface2: #F0EFE9;
  --border: #DDD9CE;
  --text: #1A1916;
  --muted: #8C8B83;
  --hint: #BAB9B0;
  --accent: #0F6E56;
  --accent2: #E1F5EE;
  --mono: 'Courier New', Courier, monospace;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--sans); background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; min-height: 100vh; }

/* ── Header ── */
header {
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 0 24px; height: 50px; display: flex; align-items: center;
  justify-content: space-between; position: sticky; top: 0; z-index: 200;
}
.logo { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; display: flex; align-items: center; gap: 6px; }
.logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
#hdr-file { font-size: 11px; color: var(--muted); font-family: var(--mono); }

/* ── Upload ── */
#upload-section { display: flex; align-items: center; justify-content: center; min-height: calc(100vh - 50px); padding: 24px; }
.drop-zone {
  max-width: 500px; width: 100%; background: var(--surface);
  border: 1.5px dashed var(--border); border-radius: 20px;
  padding: 64px 48px; text-align: center; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.drop-zone:hover, .drop-zone.over { border-color: var(--accent); background: var(--accent2); }
.dz-icon { width: 44px; height: 44px; margin: 0 auto 20px; opacity: 0.3; display: block; }
.dz-title { font-size: 18px; font-weight: 500; margin-bottom: 8px; letter-spacing: -0.01em; }
.dz-sub { font-size: 13px; color: var(--muted); }
.dz-tags { display: flex; gap: 6px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
.dz-tag { font-size: 10px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; padding: 4px 10px; border-radius: 100px; border: 1px solid var(--border); color: var(--muted); }

/* ── App ── */
#app-section { display: none; }

/* ── Stats bar ── */
.stats-bar { background: var(--surface); border-bottom: 1px solid var(--border); padding: 10px 24px; display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 1px; }
.stat-l { font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--hint); }
.stat-v { font-size: 15px; font-weight: 600; letter-spacing: -0.02em; }
.stat-v.accent { color: var(--accent); }

/* ── Schema pills ── */
.schema-bar { background: var(--surface); border-bottom: 1px solid var(--border); padding: 8px 24px; display: flex; flex-wrap: wrap; gap: 6px; }
.field-pill { font-size: 11px; padding: 3px 10px 3px 6px; border-radius: 100px; border: 1px solid var(--border); color: var(--muted); display: flex; align-items: center; gap: 5px; cursor: default; }
.pill-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.pill-type { font-size: 9px; opacity: 0.6; margin-left: 2px; }

/* ── Controls bar ── */
.ctrl-bar { background: var(--surface); border-bottom: 1px solid var(--border); padding: 10px 24px; display: flex; align-items: center; gap: 10px; }
.tabs { display: flex; gap: 2px; background: var(--surface2); padding: 3px; border-radius: 8px; }
.tab { padding: 5px 14px; border-radius: 6px; border: none; font-size: 12px; font-weight: 500; cursor: pointer; color: var(--muted); background: transparent; font-family: var(--sans); transition: all 0.1s; }
.tab.on { background: var(--surface); color: var(--text); box-shadow: 0 1px 4px rgba(0,0,0,0.09); }
.search-box { flex: 1; max-width: 280px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; font-family: var(--sans); background: var(--surface); color: var(--text); outline: none; transition: border-color 0.1s; }
.search-box:focus { border-color: var(--accent); }
.ctrl-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.pg-info { font-size: 12px; color: var(--muted); white-space: nowrap; }
.clear-btn { padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); font-size: 12px; cursor: pointer; color: var(--muted); font-family: var(--sans); }
.clear-btn:hover { color: var(--text); border-color: #999; }

/* ── Main ── */
.main { padding: 20px 24px; max-width: 1280px; margin: 0 auto; }

/* ── Cards View ── */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.card-hd { padding: 9px 14px; background: var(--surface2); border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--hint); }
.card-body { padding: 10px 14px; }
.kv-row { display: flex; align-items: flex-start; gap: 10px; padding: 5px 0; border-bottom: 1px solid var(--surface2); }
.kv-row:last-child { border-bottom: none; }
.kv-key { font-size: 11px; font-weight: 600; color: var(--muted); min-width: 90px; max-width: 120px; flex-shrink: 0; padding-top: 1px; word-break: break-word; }
.kv-val { font-size: 12px; font-family: var(--mono); word-break: break-word; flex: 1; overflow: hidden; line-height: 1.6; }

/* ── Table View ── */
.tbl-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: auto; }
table { width: 100%; border-collapse: collapse; }
thead th { padding: 9px 14px; text-align: left; font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--hint); background: var(--surface2); border-bottom: 1px solid var(--border); white-space: nowrap; position: sticky; top: 0; }
td { padding: 7px 14px; border-bottom: 1px solid var(--surface2); font-size: 12px; font-family: var(--mono); max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--surface2); }

/* ── Tree View ── */
.tree-list { display: flex; flex-direction: column; gap: 10px; }
.tree-rec { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.tree-rec-hd { padding: 9px 14px; background: var(--surface2); border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--hint); }
.tr-toggle { display: inline-block; transition: transform 0.15s; color: var(--hint); font-size: 9px; }
.tr-toggle.open { transform: rotate(90deg); }
.tree-body { padding: 12px 16px; display: none; font-family: var(--mono); font-size: 12px; line-height: 2; }
.tree-body.open { display: block; }
.t-key { color: #7B3F00; }
.t-colon { color: var(--hint); }
.t-indent { padding-left: 20px; border-left: 1px solid var(--surface2); margin-left: 4px; }
.t-brace { color: var(--muted); }

/* ── Raw View ── */
.raw-list { display: flex; flex-direction: column; gap: 10px; }
.raw-rec { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.raw-hd { padding: 9px 14px; background: var(--surface2); border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--hint); }
.copy-btn { font-size: 10px; padding: 2px 8px; border: 1px solid var(--border); border-radius: 4px; background: var(--surface); cursor: pointer; color: var(--muted); font-family: var(--sans); }
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.raw-code { padding: 14px 16px; font-family: var(--mono); font-size: 11px; line-height: 1.7; white-space: pre; overflow-x: auto; max-height: 400px; overflow-y: auto; color: var(--text); }
/* Syntax highlight via spans */
.s-key { color: #7B3F00; } .s-str { color: #1B5E20; } .s-num { color: #0D47A1; }
.s-bool { color: #6A1B00; } .s-null { color: var(--muted); font-style: italic; }
.s-emb { color: var(--accent); font-style: italic; }

/* ── Value styles ── */
.v-str { color: #1B5E20; } .v-num { color: #0D47A1; } .v-bool { color: #6A1B00; }
.v-null { color: var(--muted); font-style: italic; } .v-arr { color: var(--muted); }
.v-ts { color: #5A1FA0; font-size: 11px; }

/* ── Embedding widget ── */
.emb-widget { display: inline-flex; align-items: center; gap: 9px; background: var(--surface2); border: 1px solid var(--border); border-radius: 7px; padding: 5px 10px; vertical-align: middle; max-width: 100%; }
.emb-dim { font-size: 12px; font-weight: 700; color: var(--accent); font-family: var(--mono); white-space: nowrap; }
.emb-meta { display: flex; flex-direction: column; gap: 1px; }
.emb-stat { font-size: 10px; color: var(--muted); font-family: var(--mono); line-height: 1.4; white-space: nowrap; }

/* ── Pagination ── */
.pagination { display: flex; align-items: center; justify-content: center; gap: 5px; padding: 24px 0 12px; }
.pbtn { padding: 5px 11px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); font-size: 12px; cursor: pointer; color: var(--text); font-family: var(--sans); transition: all 0.1s; }
.pbtn:hover:not([disabled]):not(.on) { border-color: var(--accent); color: var(--accent); }
.pbtn.on { background: var(--accent); color: white; border-color: var(--accent); }
.pbtn[disabled] { opacity: 0.3; cursor: default; }
.pbtn.ellipsis { cursor: default; border: none; color: var(--muted); }

/* ── Empty ── */
.empty-state { text-align: center; padding: 64px 24px; color: var(--muted); font-size: 14px; }

/* ── Error indicator ── */
.parse-error { font-size: 12px; color: #c0392b; background: #fdf2f2; border: 1px solid #f5c6c6; border-radius: 6px; padding: 8px 12px; margin-bottom: 14px; }

@media (max-width: 640px) {
  .cards-grid { grid-template-columns: 1fr; }
  .tabs .tab { padding: 5px 10px; font-size: 11px; }
  header, .stats-bar, .ctrl-bar, .main { padding-left: 16px; padding-right: 16px; }
}