/* ── Mermaid Editor Accents ────────────────── */
:root {
  --clr-accent: #ffb86c;
}
.logo-text strong {
  color: var(--clr-accent);
}

.site-header {
  border-bottom: 2px solid var(--border);
  padding: 1rem 0;
  margin-bottom: 2rem;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -.03em;
}
.logo-icon { font-size: 1.75rem; }

.tagline {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  opacity: .8;
}

.theme-toggle {
  background: none;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .4rem;
  cursor: pointer;
  color: var(--text);
  display: grid;
  place-items: center;
  transition: all var(--transition);
}
.theme-toggle:hover { border-color: var(--text-muted); transform: rotate(15deg); }


.mermaid-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-height: calc(100vh - 200px);
}

.mermaid-settings {
  display: flex;
  gap: 1.5rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  flex-wrap: wrap;
  align-items: center;
}

.setting-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.setting-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}

.setting-group input[type="color"] {
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
  background: none;
}

.setting-group select.input {
  min-height: auto;
  padding: 0.4rem 0.75rem;
  font-family: inherit;
  width: auto;
}

.mermaid-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  flex: 1;
}

@media (max-width: 900px) {
  .mermaid-panels {
    grid-template-columns: 1fr;
  }
}

.editor-panel, .preview-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.view-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
  /* Keep buttons and header on equal visual baseline */
  min-height: 40px; 
}

.panel-header .actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: .5rem;
}

/* Force elements to wrap tightly or flex without overflowing the column */
.panel-header > h2 {
  white-space: nowrap;
  margin-bottom: 0;
}

.input {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-family: var(--font-mono, monospace);
  font-size: .95rem;
  color: var(--text);
  width: 100%;
  resize: vertical;
  min-height: 400px;
  flex: 1;
}

.output-canvas {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  min-height: 400px;
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: auto;
}

.output-canvas svg {
  max-width: 100%;
  height: auto;
}

.error-message {
  color: #ef4444;
  background: #fef2f2;
  border: 1px solid #fca5a5;
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono, monospace);
  font-size: 0.85rem;
  white-space: pre-wrap;
  display: none;
}
.error-message.show {
  display: block;
}

[data-theme="dark"] .error-message {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
}

.site-footer {
  margin-top: 4rem;
  text-align: center;
  padding: 2rem 0;
  border-top: 2px solid var(--border);
  color: var(--text-muted);
  font-weight: 500;
}
.site-footer a { color: var(--text); font-weight: 700; }