/* Editor area: tab strip + Monaco container.
 * The Monaco theme is registered in JS (lib/dsol-language.js); this file
 * only handles the surrounding chrome and the placeholder shown when no
 * file is open. */

.editor {
  grid-area: editor;
  display: flex;
  flex-direction: column;
  background: var(--bg-elevated);
  overflow: hidden;
  position: relative;
}

/* ───────────── Tab strip ───────────── */

.tabs {
  display: flex;
  height: 32px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  height: 100%;
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  border-right: 1px solid var(--border-subtle);
  cursor: pointer;
  user-select: none;
  position: relative;
  white-space: nowrap;
  flex-shrink: 0;
  max-width: 220px;
  transition: color 120ms ease-out, background 120ms ease-out;
}
.tab:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}
.tab.active {
  color: var(--text-primary);
  background: var(--bg-elevated);
}
.tab.active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}

.tab .tab-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: var(--text-secondary);
}
.tab.dsol .tab-icon { color: var(--accent); }
.tab .tab-name {
  overflow: hidden;
  text-overflow: ellipsis;
}
.tab .tab-mod-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 120ms ease-out;
}
.tab.modified .tab-mod-dot { opacity: 1; }
.tab .tab-close {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border-radius: 3px;
  margin-left: 2px;
  opacity: 0;
  transition: opacity 120ms ease-out, color 120ms ease-out, background 120ms ease-out;
}
.tab:hover .tab-close,
.tab.active .tab-close,
.tab.modified .tab-close {
  opacity: 1;
}
.tab .tab-close:hover {
  color: var(--text-primary);
  background: var(--bg-popover);
}
.tab .tab-close svg { width: 10px; height: 10px; }

/* ───────────── Editor body ───────────── */

.editor-body {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#monaco-host {
  position: absolute;
  inset: 0;
}

/* Empty editor placeholder */
.editor-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: var(--fs-base);
  pointer-events: none;
  gap: 18px;
}
.editor-empty img {
  width: 96px;
  height: 96px;
  opacity: 0.18;
  filter: drop-shadow(0 4px 12px rgba(255, 102, 0, 0.18));
}
.editor-empty .editor-empty-title {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  font-weight: 500;
}
.editor-empty .editor-empty-hint {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}
.editor-empty .editor-empty-shortcuts {
  display: flex;
  gap: 24px;
  margin-top: 12px;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}
.editor-empty kbd {
  display: inline-block;
  padding: 2px 6px;
  background: var(--bg-popover);
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-secondary);
  margin: 0 2px;
}

/* The "fallback" textarea editor used when Monaco fails to load —
 * always functional so we never have a blank page. */
.editor-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
}
.editor-fallback-head {
  background: var(--bg-popover);
  color: var(--warning);
  font-size: var(--fs-xs);
  padding: 6px 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.editor-fallback textarea {
  flex: 1;
  width: 100%;
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
  padding: 12px 16px;
  border: none;
  outline: none;
  resize: none;
  caret-color: var(--accent);
  tab-size: 2;
}
.editor-fallback textarea::selection {
  background: var(--accent-soft);
  color: var(--text-primary);
}

/* Problems strip — between editor body and terminal when there are
 * compile errors. Click any row to jump the cursor. */
.problems-strip {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  max-height: 120px;
  overflow: auto;
  display: none;
}
.problems-strip[data-has-errors="true"] { display: block; }
.problem-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  font-size: var(--fs-sm);
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
  color: var(--text-primary);
}
.problem-row:hover { background: var(--bg-hover); }
.problem-row.error { border-left: 3px solid var(--danger); }
.problem-row.warning { border-left: 3px solid var(--warning); }
.problem-row.info { border-left: 3px solid var(--info); }
.problem-row .problem-loc {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
}
.problem-row .problem-msg { flex: 1; }

/* ───────────── Page-content slot (when a non-editor activity is showing) ───────────── */

.page-content {
  position: absolute;
  inset: 0;
  background: var(--bg-elevated);
  overflow: auto;
  padding: 24px 32px;
  display: none;
}
.page-content[data-active="true"] {
  display: block;
  animation: fadeIn 200ms ease-out;
}
.page-content h1 {
  font-size: var(--fs-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.page-content h2 {
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin: 24px 0 12px;
}
.page-content h3 {
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 16px 0 8px;
}
.page-content p {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: var(--lh-normal);
}
.page-content .lead {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  max-width: 720px;
  line-height: var(--lh-normal);
  margin-bottom: 24px;
}
.page-content section {
  margin-bottom: 32px;
}
.page-content .section-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

/* Cards used inside page-content (templates list, deployed-list rows,
 * settings rows, reference doc) */
.card {
  background: var(--bg-popover);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px;
  transition: transform 150ms ease-out, border-color 150ms ease-out, box-shadow 150ms ease-out;
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-elev-1);
}
.card-title {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.card-sub {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

/* Form controls (used in publish wizard, deploy form, settings) */
.form-row { margin-bottom: 16px; }
.form-row label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  background: var(--bg-popover);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: var(--fs-base);
  padding: 8px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  transition: border-color 120ms ease-out, box-shadow 120ms ease-out;
}
.form-row textarea {
  font-family: var(--font-mono);
  resize: vertical;
  min-height: 80px;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-row .help {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: 4px;
}
.form-row .err {
  font-size: var(--fs-xs);
  color: var(--danger);
  margin-top: 4px;
}

/* Code blocks inside reference / docs */
.codeblock {
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text-primary);
  overflow-x: auto;
  white-space: pre;
}

/* Inline mono emphasis (hashes, addresses, opcodes) */
.mono-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  background: var(--bg-popover);
  color: var(--text-primary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.01em;
}