/* ==========================================================================
   Rich Description & Equation Editor Styles (Word-Style Tools)
   ========================================================================== */

.desc-editor-container {
  background: #ffffff;
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 18px rgba(99, 102, 241, 0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.desc-editor-container:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15), 0 8px 24px rgba(99, 102, 241, 0.12);
}

/* Visual Composer Drawer */
.desc-composer-drawer {
  background: linear-gradient(180deg, #f8faff 0%, #f0f4ff 100%);
  border-bottom: 2px solid var(--primary-light);
  padding: 0.85rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  animation: fadeInDown 0.2s ease-out;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.desc-composer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.desc-composer-math-field {
  width: 100%;
  font-size: 1.35rem;
  min-height: 52px;
  padding: 0.5rem 0.85rem;
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: #1e1b4b;
  outline: none;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.1);
  display: flex;
  align-items: center;
}

.desc-composer-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-composer-insert {
  background: var(--primary);
  color: #ffffff;
  border: none;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.15s ease;
}

.btn-composer-insert:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-composer-cancel {
  background: #ffffff;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-composer-cancel:hover {
  background: var(--bg-alt);
  color: var(--text-main);
}

/* Main Textarea Wrapper */
.desc-input-wrapper {
  padding: 0.85rem 1.25rem 0.5rem;
  background: #ffffff;
}

.desc-main-textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-main);
  background: #ffffff;
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  padding: 0.5rem 0.25rem;
  resize: vertical;
  min-height: 140px;
  outline: none;
  transition: border-color 0.15s ease;
  box-sizing: border-box;
}

.desc-main-textarea:focus {
  border-color: rgba(99, 102, 241, 0.25);
}

.desc-main-textarea::placeholder {
  color: #94a3b8;
  font-size: 0.9rem;
}

/* Status / Hints Bar */
.desc-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.45rem 1.25rem 0.65rem;
  border-top: 1px solid var(--border);
  background: #fafbfe;
  font-size: 0.775rem;
  color: var(--text-muted);
}

.desc-shortcut-hints {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.desc-char-counter {
  font-family: var(--font-mono);
  font-size: 0.725rem;
  color: var(--text-light);
}

/* Live KaTeX Render Preview Box */
.desc-preview-wrapper {
  background: #f8fafc;
  border-top: 1.5px solid var(--border);
  padding: 0.85rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.desc-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
}

.desc-preview-rendered {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  min-height: 48px;
  max-height: 220px;
  overflow-y: auto;
  font-size: 0.925rem;
  line-height: 1.65;
  color: var(--text-main);
  word-break: break-word;
}

.desc-preview-rendered .katex-block-wrapper {
  margin: 0.75rem 0;
  text-align: center;
}

.desc-preview-rendered .katex-inline-wrapper {
  display: inline-block;
  padding: 0 0.15rem;
}

.desc-preview-empty {
  color: #94a3b8;
  font-style: italic;
  font-size: 0.85rem;
}