/* ── Playground: full-height IDE layout ── */

/* The playground-page class is on <main class="page-content playground-page"> */
.page-content.playground-page {
  max-width: 100%;
  padding: 0;
  height: calc(100vh - 3rem); /* viewport minus nav */
  overflow: hidden;
}

/* Hide footer on playground */
.page-content.playground-page + .site-footer { display: none; }

#playground-root {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* ── Toolbar ── */
.playground-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.75rem;
  height: 2.5rem;
  min-height: 2.5rem;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.8rem;
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.toolbar-title {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text);
  margin-right: 0.25rem;
}

.playground-toolbar select {
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.2rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}

.toolbar-check {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.toolbar-check input {
  cursor: pointer;
  accent-color: var(--link);
}

#playground-status {
  font-size: 0.8rem;
  font-family: var(--mono);
  white-space: nowrap;
}

.status-loading { color: var(--text-tertiary); }
.status-ready { color: var(--success); }
.status-checking { color: var(--scanner-color); }
.status-error { color: var(--solver-color); }
.status-count {
  color: var(--text-secondary);
}
.status-count .err-count { color: var(--solver-color); font-weight: 600; }
.status-count .time { color: var(--text-tertiary); }

/* ── Panels ── */
.playground-panels {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

#editor-container {
  flex: 3;
  min-width: 0;
  overflow: hidden;
}

.playground-divider {
  width: 1px;
  background: var(--border);
  flex-shrink: 0;
}

.playground-output {
  flex: 2;
  min-width: 200px;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  overflow: hidden;
}

/* ── Output Tabs ── */
.output-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-subtle);
  min-height: 2rem;
}

.output-tab {
  padding: 0 0.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  border: none;
  background: none;
  color: var(--text-tertiary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  height: 2rem;
  transition: color 0.1s;
}

.output-tab:hover { color: var(--text-secondary); }
.output-tab.active {
  color: var(--text);
  border-bottom-color: var(--link);
}

.tab-badge {
  font-size: 0.7rem;
  padding: 0.05rem 0.35rem;
  border-radius: 8px;
  background: var(--solver-color);
  color: #fff;
  font-weight: 600;
  line-height: 1.3;
}

.tab-badge.zero {
  background: var(--success);
}

/* ── Output Panels ── */
.output-panel {
  display: none;
  flex: 1;
  overflow-y: auto;
  font-size: 0.8rem;
}

.output-panel.active { display: block; }

.diagnostics-empty {
  color: var(--text-tertiary);
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.8rem;
  font-style: italic;
}

.diagnostics-ok {
  color: var(--success);
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ── Diagnostic Items ── */
.diag-item {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  line-height: 1.5;
  cursor: pointer;
  transition: background 0.1s;
}

.diag-item:hover { background: var(--bg-subtle); }

.diag-header {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.diag-code {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  flex-shrink: 0;
}

.diag-code.error { background: var(--solver-color); color: #fff; }
.diag-code.warning { background: var(--scanner-color); color: #fff; }
.diag-code.suggestion { background: var(--link); color: #fff; }

.diag-message {
  color: var(--text);
  word-break: break-word;
}

.diag-location {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-tertiary);
  margin-top: 0.15rem;
}

#js-output-editor {
  width: 100%;
  height: 100%;
}

#js-output-editor .monaco-editor,
#js-output-editor .monaco-editor .margin,
#js-output-editor .monaco-editor-background,
#js-output-editor .monaco-editor .inputarea.ime-input {
  background-color: var(--bg-code) !important;
}

.output-panel.active {
  display: flex;
  flex-direction: column;
}

/* ── Fallback ── */
.fallback-box {
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-secondary);
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .playground-panels { flex-direction: column; }
  #editor-container { flex: 1; min-height: 250px; }
  .playground-divider { width: 100%; height: 1px; }
  .playground-output {
    flex: 1;
    min-width: 0;
    border-top: 1px solid var(--border-subtle);
  }
}