/**
 * HAPPEE Markdown Styles
 *
 * Shared CSS for consistently styled markdown content across all HAPPEE components:
 * - Chat messages (Shadow DOM)
 * - Visual panel
 * - Knowledge base documents
 *
 * All classes are prefixed with 'md-' to avoid conflicts.
 * These styles are designed to work both in normal DOM and Shadow DOM.
 *
 * The MarkdownRenderingService generates HTML with these classes.
 * This file should be kept in sync with any changes to the renderer.
 */

/* Container */
.md-content {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: inherit;
  word-wrap: break-word;
  overflow-wrap: anywhere;
  max-width: 100%;
}

/* Headers */
.md-h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 1.5rem 0 0.75rem 0;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--md-border-color, #e5e7eb);
  color: var(--md-heading-color, #111827);
}

.md-h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 1.25rem 0 0.5rem 0;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--md-border-color, #e5e7eb);
  color: var(--md-heading-color, #111827);
}

.md-h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 1rem 0 0.5rem 0;
  color: var(--md-heading-color, #111827);
}

.md-h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0.875rem 0 0.375rem 0;
  color: var(--md-heading-color, #111827);
}

.md-h5 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin: 0.75rem 0 0.25rem 0;
  color: var(--md-heading-color, #111827);
}

.md-h6 {
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0.75rem 0 0.25rem 0;
  color: var(--md-muted-color, #6b7280);
}

/* First header shouldn't have top margin */
.md-content > .md-h1:first-child,
.md-content > .md-h2:first-child,
.md-content > .md-h3:first-child,
.md-content > .md-h4:first-child,
.md-content > .md-h5:first-child,
.md-content > .md-h6:first-child {
  margin-top: 0;
}

/* Paragraphs */
.md-p {
  margin: 0.625rem 0;
}

.md-content > .md-p:first-child {
  margin-top: 0;
}

.md-content > .md-p:last-child {
  margin-bottom: 0;
}

/* Inline text styles */
.md-strong {
  font-weight: 600;
  color: var(--md-strong-color, inherit);
}

.md-em {
  font-style: italic;
}

.md-del {
  text-decoration: line-through;
  opacity: 0.7;
}

.md-mark {
  background-color: var(--md-highlight-bg, #fef08a);
  padding: 0.125rem 0.25rem;
  border-radius: 0.125rem;
}

/* Links */
.md-link {
  color: var(--md-link-color, #7239EA);
  text-decoration: none;
  font-weight: 500;
  overflow-wrap: anywhere;
  word-break: break-all;
}

.md-link:hover {
  text-decoration: underline;
  color: var(--md-link-hover-color, #5014D0);
}

/* Inline code */
.md-code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.875em;
  background-color: var(--md-code-bg, #f3f4f6);
  color: var(--md-code-color, #1f2937);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* Code blocks */
.md-code-block {
  margin: 0.75rem 0;
  border-radius: 0.5rem;
  overflow: hidden;
  background-color: var(--md-code-block-bg, #1f2937);
}

.md-code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  background-color: var(--md-code-header-bg, #374151);
  border-bottom: 1px solid var(--md-code-border, #4b5563);
}

.md-code-language {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.75rem;
  color: var(--md-code-header-color, #9ca3af);
  text-transform: lowercase;
}

.md-pre {
  margin: 0;
  padding: 1rem;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8125rem;
  line-height: 1.5;
  background-color: var(--md-code-block-bg, #1f2937);
  color: var(--md-code-block-color, #e5e7eb);
}

.md-highlight {
  /* Rouge inline styles handle syntax highlighting */
}

/* Block quotes */
.md-blockquote {
  margin: 0.75rem 0;
  padding: 0.5rem 0 0.5rem 1rem;
  border-left: 4px solid var(--md-blockquote-border, #7239EA);
  background-color: var(--md-blockquote-bg, #f9fafb);
  color: var(--md-blockquote-color, #4b5563);
}

.md-blockquote .md-p {
  margin: 0.25rem 0;
}

/* Lists */
.md-list {
  margin: 0.625rem 0;
  padding-left: 1.5rem;
}

.md-list-unordered {
  list-style-type: disc;
}

.md-list-ordered {
  list-style-type: decimal;
}

.md-list-item {
  margin: 0.25rem 0;
  padding-left: 0.25rem;
}

/* Nested lists */
.md-list .md-list {
  margin: 0.25rem 0;
}

/* Tables - Clean, modern styling */
/* Also apply to plain tables inside md-content for LLM-generated HTML */
.md-table-wrapper,
.md-content > table {
  margin: 1rem 0;
  overflow-x: auto;
  border-radius: 0.5rem;
  border: 1px solid #e5e7eb !important;
}

.md-table,
.md-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  line-height: 1.5;
  background-color: #ffffff !important;
}

.md-thead,
.md-content thead {
  background-color: #f8fafc !important;
}

.md-th,
.md-content th {
  padding: 0.625rem 1rem !important;
  text-align: left;
  font-weight: 600 !important;
  font-size: 0.75rem !important;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: #64748b !important;
  background-color: #f8fafc !important;
  border: none !important;
  border-bottom: 1px solid #e2e8f0 !important;
}

.md-tbody,
.md-content tbody {
  background-color: #ffffff !important;
}

.md-td,
.md-content td {
  padding: 0.75rem 1rem !important;
  border: none !important;
  border-bottom: 1px solid #f1f5f9 !important;
  color: #334155 !important;
  background-color: #ffffff !important;
}

.md-tr,
.md-content tr {
  background-color: #ffffff !important;
}

.md-tr:nth-child(even),
.md-content tbody tr:nth-child(even) {
  background-color: #f8fafc !important;
}

.md-tr:nth-child(even) .md-td,
.md-content tbody tr:nth-child(even) td {
  background-color: #f8fafc !important;
}

.md-tr:last-child .md-td,
.md-content tbody tr:last-child td {
  border-bottom: none !important;
}

.md-tr:hover,
.md-content tbody tr:hover {
  background-color: #f1f5f9 !important;
}

.md-tr:hover .md-td,
.md-content tbody tr:hover td {
  background-color: #f1f5f9 !important;
}

.md-align-left { text-align: left; }
.md-align-center { text-align: center; }
.md-align-right { text-align: right; }

/* Numeric cells - right align for better readability */
.md-td:not(:first-child),
.md-content td:not(:first-child) {
  font-variant-numeric: tabular-nums;
}

/* Horizontal rule */
.md-hr {
  margin: 1.5rem 0;
  border: none;
  border-top: 1px solid var(--md-border-color, #e5e7eb);
}

/* Images */
.md-image {
  max-width: 100%;
  height: auto;
  border-radius: 0.375rem;
  margin: 0.5rem 0;
}

/* Dark mode support via CSS variables */
/* Use class-based dark mode (.dark on html) instead of prefers-color-scheme */
/* This ensures the markdown styling respects the app's theme setting, not OS preference */
.dark .md-content {
    --md-border-color: #374151;
    --md-heading-color: #f3f4f6;
    --md-muted-color: #9ca3af;
    --md-strong-color: #f9fafb;
    --md-highlight-bg: #854d0e;
    --md-link-color: #a78bfa;
    --md-link-hover-color: #c4b5fd;
    --md-code-bg: #374151;
    --md-code-color: #e5e7eb;
    --md-code-block-bg: #111827;
    --md-code-header-bg: #1f2937;
    --md-code-border: #374151;
    --md-code-header-color: #9ca3af;
    --md-code-block-color: #e5e7eb;
    --md-blockquote-border: #a78bfa;
  --md-blockquote-bg: #1f2937;
  --md-blockquote-color: #d1d5db;
}

/* Dark mode table overrides - subtle, not heavy */
.dark .md-table,
.dark .md-content table {
  background-color: #1e293b !important;
}

.dark .md-thead,
.dark .md-content thead {
  background-color: #334155 !important;
}

.dark .md-th,
.dark .md-content th {
  color: #cbd5e1 !important;
  background-color: #334155 !important;
  border-bottom-color: #475569 !important;
}

.dark .md-tbody,
.dark .md-content tbody {
  background-color: #1e293b !important;
}

.dark .md-td,
.dark .md-content td {
  color: #e2e8f0 !important;
  background-color: #1e293b !important;
  border-bottom-color: #334155 !important;
}

.dark .md-tr,
.dark .md-content tr {
  background-color: #1e293b !important;
}

.dark .md-tr:nth-child(even),
.dark .md-content tbody tr:nth-child(even) {
  background-color: #273449 !important;
}

.dark .md-tr:nth-child(even) .md-td,
.dark .md-content tbody tr:nth-child(even) td {
  background-color: #273449 !important;
}

.dark .md-tr:hover,
.dark .md-content tbody tr:hover {
  background-color: #334155 !important;
}

.dark .md-tr:hover .md-td,
.dark .md-content tbody tr:hover td {
  background-color: #334155 !important;
}

.dark .md-table-wrapper,
.dark .md-content > table {
  border-color: #475569 !important;
}

/* @mention chip — ghost style with avatar + username */
.md-mention {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.15rem 0.4rem 0.15rem 0.15rem;
  border-radius: 6px;
  background-color: transparent;
  color: var(--primary, oklch(0.623 0.214 259.815));
  border: none;
  font-size: 0.875em;
  font-weight: 500;
  text-decoration: none;
  vertical-align: middle;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.md-mention:hover {
  background-color: var(--muted, #f3f4f6);
  text-decoration: none;
}

.md-mention-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 9999px;
  background-color: color-mix(in oklab, var(--primary, oklch(0.623 0.214 259.815)) 10%, transparent);
  color: var(--primary, oklch(0.623 0.214 259.815));
  font-size: 0.6rem;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1;
}

.md-mention-name {
  line-height: 1;
}

/* Dark mode mention overrides */
.dark .md-mention:hover {
  background-color: #374151;
}

.dark .md-mention-avatar {
  background-color: color-mix(in oklab, var(--primary, oklch(0.623 0.214 259.815)) 15%, transparent);
  color: var(--primary, oklch(0.623 0.214 259.815));
}