/* ═══════════════════════════════════════════
   Playground (SQL + Python) shared styles
   ═══════════════════════════════════════════ */

.pg-header {
  text-align: center;
  padding: 36px 24px 16px;
  border-bottom: 1px solid var(--color-border-light);
}
.pg-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  color: var(--color-ink);
}
.pg-subtitle {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-light-muted);
  margin-top: 6px;
}

.pg-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  grid-template-rows: auto auto auto;
  grid-template-areas:
    "question  schema"
    "editor    schema"
    "results   schema"
    "solution  solution";
  gap: 14px;
  padding: 18px clamp(14px, 3vw, 36px);
  max-width: 1500px;
  margin: 0 auto;
  align-items: start;
}

/* ─── Question ─── */
.pg-question {
  grid-area: question;
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 14px 18px;
}
.pg-question-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.pg-question-meta { display: flex; align-items: center; gap: 6px; }
.pg-question-meta select {
  padding: 6px 8px;
  font-family: var(--font-body);
  font-size: 14px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 3px;
  min-width: 320px;
  max-width: 480px;
}
.pg-question-meta button {
  padding: 4px 10px;
  font-family: var(--font-mono);
  border: 1px solid var(--color-border);
  background: #fff;
  cursor: pointer;
  border-radius: 3px;
}
.pg-question-meta button:hover { background: var(--color-gold-dark); color: #fff; border-color: var(--color-gold-dark); }
.pg-question-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.pg-question-tags span:not(:empty) {
  padding: 3px 9px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
}
.pg-q-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin: 6px 0 8px;
}
.pg-q-schema-block { margin-top: 6px; }
.pg-detail-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-light-muted);
  margin-bottom: 4px;
}
.pg-q-schema-block pre {
  background: #243042;
  color: #d8e4ef;
  padding: 10px 12px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
}

/* ─── Editor ─── */
.pg-editor-pane {
  grid-area: editor;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.pg-editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.pg-btn {
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.15s;
}
.pg-btn:hover { background: var(--color-gold-dark); color: #fff; border-color: var(--color-gold-dark); }
.pg-btn-primary {
  background: var(--color-gold-dark);
  color: #fff;
  border-color: var(--color-gold-dark);
}
.pg-btn-primary:hover { background: var(--color-gold); border-color: var(--color-gold); }
.pg-btn-ghost { background: transparent; }
.pg-btn:disabled, .pg-btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  background: #fff;
  color: var(--color-light-muted);
  border-color: var(--color-border);
}
.pg-btn-primary:disabled { background: var(--color-border); color: #fff; }
.pg-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-light-muted);
}
.pg-status.is-error { color: var(--color-rust); }
.pg-status.is-ok { color: var(--color-sage); }

.pg-editor {
  flex: 1;
  min-height: 280px;
  border: none;
  outline: none;
  resize: vertical;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.55;
  background: #1a2332;
  color: #e6edf3;
  tab-size: 2;
  white-space: pre;
}
.pg-editor::placeholder { color: #6c8198; }

/* ─── Schema sidebar ─── */
.pg-schema-side {
  grid-area: schema;
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 14px;
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
}
.pg-schema-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.pg-schema-head h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
}
.pg-schema-hint {
  font-size: 12px;
  color: var(--color-light-muted);
  margin-bottom: 10px;
  line-height: 1.45;
}
.pg-schema-hint code { background: #fff; padding: 1px 5px; border-radius: 2px; font-size: 11px; }
.pg-table-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.pg-table-list li {
  border-bottom: 1px solid var(--color-border-light);
  padding: 6px 0;
}
.pg-table-name {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-gold-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.pg-table-name:hover { color: var(--color-rust); }
.pg-table-name .pg-row-count {
  font-size: 10px;
  font-weight: 400;
  color: var(--color-light-muted);
}
.pg-table-cols {
  margin-top: 6px;
  padding-left: 8px;
  border-left: 2px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--color-muted);
  display: none;
}
.pg-table-list li.is-open .pg-table-cols { display: block; }
.pg-table-cols div { padding: 1px 0; }
.pg-table-cols .pg-col-type { color: var(--color-light-muted); margin-left: 6px; }

.pg-load-csv {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border-light);
}
.pg-load-csv summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.pg-load-csv input, .pg-load-csv textarea {
  width: 100%;
  margin-top: 8px;
  padding: 6px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 3px;
}
.pg-load-csv textarea { resize: vertical; }
.pg-load-csv .pg-btn { margin-top: 8px; width: 100%; }

/* ─── Results ─── */
.pg-results-pane {
  grid-area: results;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}
.pg-results-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-border);
}
.pg-results-head h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
}
.pg-results-body {
  min-height: 140px;
  max-height: 480px;
  overflow: auto;
  padding: 0;
}
.pg-empty {
  padding: 32px;
  text-align: center;
  color: var(--color-light-muted);
  font-style: italic;
}
.pg-error {
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  white-space: pre-wrap;
  background: #fdf2ee;
  color: #6e2310;
  border-left: 3px solid var(--color-rust);
}
table.pg-result-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12.5px;
}
table.pg-result-table th, table.pg-result-table td {
  padding: 6px 12px;
  border-bottom: 1px solid var(--color-border-light);
  text-align: left;
  white-space: nowrap;
}
table.pg-result-table th {
  position: sticky;
  top: 0;
  background: var(--color-cream);
  color: var(--color-ink);
  font-weight: 600;
  border-bottom: 2px solid var(--color-border);
  z-index: 1;
}
table.pg-result-table tr:hover td { background: #f6faff; }
table.pg-result-table .pg-null { color: var(--color-light-muted); font-style: italic; }
.pg-affected {
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-sage);
  background: #f0f7f3;
}

/* Python output */
.pg-py-output {
  padding: 12px 14px;
  background: #1a2332;
  color: #e6edf3;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}
.pg-py-output .pg-empty { color: #6c8198; background: transparent; }
.pg-py-output .pg-stderr { color: #ff8b73; }
.pg-py-output .pg-trace { color: #ffd479; }
.pg-py-output .pg-return { color: #79c0ff; }

.pg-pyo-pkg {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  cursor: pointer;
  padding: 4px 8px;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  background: #fff;
}
.pg-pyo-pkg input { accent-color: var(--color-gold-dark); }

/* ─── Solution ─── */
.pg-solution-pane {
  grid-area: solution;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}
.pg-solution-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-border);
}
.pg-solution-head h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
}
.pg-solution-pane pre {
  margin: 0;
  padding: 14px 18px;
  background: #1a2332;
  color: #e6edf3;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  overflow-x: auto;
  white-space: pre;
}

@media (max-width: 1000px) {
  .pg-shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "question"
      "schema"
      "editor"
      "results"
      "solution";
  }
  .pg-schema-side { position: static; max-height: 320px; }
}