/* Same palette as the docs/ site: slate with a blue accent. */
:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff6ff;
  --accent-text: #ffffff;
  --row-alt: #f8fafc;
  --row-hover: #f1f5f9;
  --danger: #b91c1c;
  --danger-soft: #fef2f2;
  --danger-border: #fecaca;
  --code-bg: #f8fafc;
  --kw: #7c3aed;
  --str: #047857;
  --num: #b45309;
  --cmt: #94a3b8;
  --shadow: 0 1px 2px rgb(15 23 42 / 0.06), 0 1px 3px rgb(15 23 42 / 0.04);
  --radius: 12px;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --border: #334155;
    --border-strong: #475569;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --accent-soft: #1e3a5f;
    --row-alt: #1a2536;
    --row-hover: #263449;
    --danger: #fca5a5;
    --danger-soft: #3b1d24;
    --danger-border: #7f1d1d;
    --code-bg: #162032;
    --kw: #c4b5fd;
    --str: #6ee7b7;
    --num: #fcd34d;
    --cmt: #64748b;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

h1, h2 { margin: 0; line-height: 1.25; }
h1 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: 1rem; font-weight: 600; }
p { margin: 0; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
[hidden] { display: none !important; }

/* ------------------------------------------------------------ layout */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.brand p { font-size: 0.875rem; }

.layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 24px 40px;
  max-width: 1600px;
  margin: 0 auto;
  align-items: start;
}

main { display: flex; flex-direction: column; gap: 16px; min-width: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ------------------------------------------------------------ buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: var(--row-hover); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn:disabled { opacity: 0.6; cursor: progress; }
.btn:focus-visible, .icon-btn:focus-visible, .preset:focus-visible, .tabs button:focus-visible,
summary:focus-visible, .col-name:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.icon-btn:hover { background: var(--row-hover); color: var(--text); }

.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }

/* ------------------------------------------------------------ sidebar */

.sidebar {
  position: sticky;
  top: 20px;
  max-height: calc(100vh - 40px);
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tabs { display: flex; border-bottom: 1px solid var(--border); }
.tabs button {
  flex: 1;
  padding: 12px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.tabs button[aria-selected="true"] { color: var(--accent); border-bottom-color: var(--accent); }

.panel { overflow-y: auto; padding: 12px; }
.panel > .muted { padding: 4px 4px 8px; }

.category {
  margin: 14px 4px 6px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.category:first-child { margin-top: 2px; }

.preset {
  display: block;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: none;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.preset:hover { background: var(--row-hover); }
.preset[aria-current="true"] { background: var(--accent-soft); border-color: var(--accent); }
.preset .t { display: block; font-weight: 500; font-size: 0.92rem; }
.preset .d {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.4;
}

#tableSearch {
  width: 100%;
  margin-bottom: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.rel { border-bottom: 1px solid var(--border); }
.rel summary {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 4px;
  cursor: pointer;
  list-style: none;
}
.rel summary::-webkit-details-marker { display: none; }
.rel summary::before { content: "▸"; color: var(--muted); font-size: 0.75rem; }
.rel[open] summary::before { content: "▾"; }
.rel .name { font-family: var(--mono); font-size: 0.86rem; font-weight: 600; word-break: break-all; }
.badge {
  margin-left: auto;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--row-hover);
  color: var(--muted);
  font-size: 0.72rem;
  white-space: nowrap;
}
.rel-body { padding: 0 4px 10px 18px; }
.rel-body > p { margin-bottom: 6px; font-size: 0.82rem; color: var(--muted); }
.rel-body .btn { min-height: 28px; padding: 2px 10px; font-size: 0.8rem; margin: 2px 0 8px; }
.cols { list-style: none; margin: 0; padding: 0; }
.cols li { padding: 2px 0; font-size: 0.82rem; line-height: 1.35; }
.col-name {
  padding: 0;
  border: 0;
  background: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.82rem;
  cursor: pointer;
}
.col-name:hover { color: var(--accent); text-decoration: underline; }
.col-type { color: var(--muted); font-family: var(--mono); font-size: 0.76rem; }
.col-key { color: var(--accent); font-size: 0.72rem; font-weight: 600; }
.col-note { display: block; color: var(--muted); font-size: 0.76rem; }

/* ------------------------------------------------------------ AI card */

.ai { padding: 18px 20px; border-color: var(--accent); background: linear-gradient(var(--accent-soft), var(--card) 70%); }
.ai-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.steps { margin: 10px 0 0; padding-left: 22px; }
.steps li { margin: 6px 0; padding-left: 4px; }
.steps .row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 8px 0 4px; }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; color: var(--muted); cursor: pointer; }

/* ------------------------------------------------------------ editor */

.editor-card { overflow: hidden; }
.editor-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}
.query-meta { min-width: 0; }

#sql, .CodeMirror {
  width: 100%;
  height: 260px;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.55;
  background: var(--code-bg);
  color: var(--text);
}
#sql { display: block; padding: 10px 12px; border: 0; resize: vertical; }
.CodeMirror { resize: vertical; overflow: hidden; }
.CodeMirror-gutters { background: var(--code-bg); border-right: 1px solid var(--border); }
.CodeMirror-linenumber { color: var(--cmt); }
.CodeMirror-cursor { border-left-color: var(--text); }
.CodeMirror-selected { background: var(--accent-soft) !important; }
.CodeMirror-focused .CodeMirror-selected { background: var(--accent-soft) !important; }
.CodeMirror-line::selection, .CodeMirror-line > span::selection, .CodeMirror-line > span > span::selection { background: var(--accent-soft); }
.CodeMirror-matchingbracket { color: var(--accent) !important; font-weight: 700; }
.CodeMirror-placeholder { color: var(--cmt) !important; }
/* scoped like CodeMirror's own theme rules so these win in both colour schemes */
.cm-s-default .cm-keyword { color: var(--kw); }
.cm-s-default .cm-builtin, .cm-s-default .cm-type, .cm-s-default .cm-variable-3 { color: var(--kw); }
.cm-s-default .cm-string, .cm-s-default .cm-string-2 { color: var(--str); }
.cm-s-default .cm-number, .cm-s-default .cm-atom { color: var(--num); }
.cm-s-default .cm-comment { color: var(--cmt); font-style: italic; }
.cm-s-default .cm-operator, .cm-s-default .cm-bracket, .cm-s-default .cm-punctuation { color: var(--muted); }
.cm-s-default .cm-variable, .cm-s-default .cm-variable-2, .cm-s-default .cm-def { color: var(--text); }
.cm-error-mark { background: var(--danger-soft); border-bottom: 2px solid var(--danger); }
.CodeMirror-hints {
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.15);
  font-family: var(--mono);
  font-size: 13px;
}
.CodeMirror-hint { color: var(--text); padding: 2px 8px; }
li.CodeMirror-hint-active { background: var(--accent); color: var(--accent-text); }

.editor-foot { padding: 8px 16px; border-top: 1px solid var(--border); }

/* ------------------------------------------------------------ results */

.results { overflow: hidden; }
.results-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}
#status { font-size: 0.9rem; }
#status .warn { color: var(--num); }

.error {
  margin: 16px;
  padding: 12px 14px;
  border: 1px solid var(--danger-border);
  border-radius: 8px;
  background: var(--danger-soft);
  color: var(--danger);
}
.error strong { display: block; margin-bottom: 2px; }
.error p { margin-top: 4px; font-size: 0.9rem; }

.table-wrap { overflow: auto; max-height: 70vh; }
#grid { border-collapse: separate; border-spacing: 0; width: max-content; min-width: 100%; font-size: 0.875rem; }
#grid th, #grid td { padding: 7px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
#grid th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--card);
  border-bottom: 1px solid var(--border-strong);
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}
#grid th:hover { color: var(--accent); }
#grid th .arrow { color: var(--accent); font-size: 0.75rem; margin-left: 4px; }
#grid th.num, #grid td.num { text-align: right; font-variant-numeric: tabular-nums; }
#grid td { max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#grid tbody tr:nth-child(even) td { background: var(--row-alt); }
#grid tbody tr:hover td { background: var(--row-hover); }
#grid .rownum { color: var(--muted); font-size: 0.78rem; text-align: right; cursor: default; }
#grid .null { color: var(--cmt); font-style: italic; }
.more { margin: 12px 16px; }

/* ------------------------------------------------------------ login */

.login { max-width: 380px; margin: 12vh auto 0; padding: 24px; }
.login form { display: flex; flex-direction: column; gap: 12px; }
.login input {
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
.login input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.login .btn { justify-content: center; }
.login-error { color: var(--danger); font-size: 0.9rem; }

/* ------------------------------------------------------------ toast */

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  max-width: calc(100vw - 32px);
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
  font-size: 0.9rem;
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.2);
  z-index: 10;
}

/* ------------------------------------------------------------ small screens */

@media (max-width: 900px) {
  .topbar { padding: 12px 16px; }
  .layout { grid-template-columns: minmax(0, 1fr); padding: 12px 16px 32px; gap: 12px; }
  .sidebar { position: static; max-height: 46vh; }
  .editor-head { flex-direction: column; }
  #sql, .CodeMirror { height: 200px; }
  .ai { padding: 14px 16px; }
  .login { margin: 6vh 16px 0; }
}