/* MathCursor — démo web styles, complète style.css du site. */

.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 24px;
  margin-bottom: 24px;
}

@media (max-width: 768px) {
  .demo-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

.demo-input label,
.demo-output label {
  display: block;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#ta {
  width: 100%;
  min-height: 140px;
  padding: 16px;
  border: 2px solid var(--paper-rim);
  border-radius: 6px;
  background: var(--paper-white);
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--text);
  resize: vertical;
  transition: border-color 0.15s;
}

#ta:focus {
  outline: none;
  border-color: var(--ink);
}

.examples {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.examples .ex-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-right: 4px;
}

.examples button {
  background: var(--paper-low);
  border: 1px solid var(--paper-rim);
  border-radius: 999px;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
}

.examples button:hover {
  background: var(--ink-tint);
  border-color: var(--ink-light);
  color: var(--ink);
}

.preview-box {
  min-height: 140px;
  padding: 24px;
  background: var(--paper-white);
  border: 2px solid var(--paper-rim);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  overflow-x: auto;
}

.preview-box .empty {
  color: var(--text-muted);
  font-style: italic;
  font-size: 14px;
}

.preview-box .error {
  color: var(--red);
  font-size: 14px;
}

.latex-source {
  margin-top: 12px;
}

.latex-source summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 0;
}

.latex-source summary:hover {
  color: var(--ink);
}

.latex-source pre {
  background: var(--paper-low);
  border: 1px solid var(--paper-rim);
  border-radius: 4px;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  overflow-x: auto;
  margin: 6px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.alternatives {
  margin-top: 20px;
}

.alt-header {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.alt-count {
  display: inline-block;
  background: var(--yellow);
  color: var(--text);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.alt-rule {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
}

.alt-card {
  background: var(--paper-white);
  border: 1px solid var(--paper-rim);
  border-radius: 6px;
  padding: 14px 16px;
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.15s;
}

.alt-card:hover {
  border-color: var(--ink-light);
}

.alt-card .alt-render {
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
}

.alt-card .alt-source {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  text-align: center;
  padding-top: 6px;
  border-top: 1px dashed var(--paper-rim);
  word-break: break-all;
}

.hint {
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
  border-left: 3px solid var(--ink-light);
  padding: 8px 14px;
  background: var(--paper-low);
  border-radius: 0 4px 4px 0;
}

/* Loading overlay — affiché pendant le boot Blazor (~3-5 sec premier load). */
.loading {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  gap: 16px;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--paper-rim);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  font-family: var(--font-head);
  color: var(--ink);
  font-size: 14px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Override KaTeX pour s'aligner avec le thème "encre bleue" du site. */
.katex {
  color: var(--ink) !important;
  font-size: 1.3em;
}