/* ==========================================================================
   Overview - shared content styles
   Single source of truth for the reading typography: design tokens and the
   `.tiptap-content` rendering rules. Imported by the app (web/src/styles.css)
   and linked by the generated static site (internal/sitegen). Keep values in
   sync with the editor reading state; do not add editor-only rules
   (.ProseMirror-*, placeholders, selection, toolbars).
   ========================================================================== */

:root {
  /* Neutrals */
  --bg: #ffffff;
  --bg-panel: #fafaf8;
  --bg-soft: #f5f3f0;
  --bg-hover: #f5f3f0;
  --bg-active: #fdf4e3;
  --border: #e8e8e6;
  --border-strong: #d4d4d2;

  /* Text */
  --text: #37352f;
  --text-strong: #1a1a1a;
  --text-muted: #6b6b6b;
  --text-soft: #9b9b9b;
  --text-faint: #b7b7b3;

  /* Accent */
  --accent: #d4870e;
  --accent-hover: #b87308;
  --accent-soft: #fdf4e3;
  --accent-ring: rgba(212, 135, 14, 0.24);
  --danger: #d44c47;
  --danger-soft: #fbebea;
  --success: #448361;

  /* Code */
  --code-bg: #f7f6f3;
  --code-border: #ecebe8;

  /* Syntax highlighting */
  --hl-keyword: #9d6fb0;
  --hl-string: #6a9b72;
  --hl-number: #a8823f;
  --hl-title: var(--accent);
  --hl-attr: #cf7a6a;
  --hl-deletion-bg: rgba(207, 122, 106, 0.12);

  /* Type scale */
  --font-sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:
    ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono",
    monospace;
  --base-size: 16px;

  /* Spacing scale */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;

  /* Radius & shadow */
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-1: 0 1px 2px rgba(15, 15, 15, 0.06);
  --shadow-2: 0 8px 24px rgba(15, 15, 15, 0.1);
  --shadow-3: 0 16px 48px rgba(15, 15, 15, 0.16);

  --btn-primary-bg: #1a1a1a;
  --btn-primary-fg: #ffffff;
  --btn-primary-hover: #000000;

  --topbar-h: 56px;
}

:root[data-theme="dark"] {
  --bg: #1f1e1c;
  --bg-panel: #262523;
  --bg-soft: #2d2b28;
  --bg-hover: #33312d;
  --bg-active: #3a2f16;
  --border: #33312d;
  --border-strong: #454340;

  --text: #e9e6e0;
  --text-strong: #f7f5f0;
  --text-muted: #b3afa8;
  --text-soft: #918c85;
  --text-faint: #75706a;

  --accent: #e9a23b;
  --accent-hover: #f2b658;
  --accent-soft: #3a2f16;
  --accent-ring: rgba(233, 162, 59, 0.3);
  --danger: #e28b8b;
  --danger-soft: #382626;
  --success: #79bd93;

  --code-bg: #26241f;
  --code-border: #34322c;

  --hl-keyword: #c9a2dd;
  --hl-string: #9ed3a6;
  --hl-number: #e0c48a;
  --hl-title: var(--accent);
  --hl-attr: #f0a99b;
  --hl-deletion-bg: rgba(240, 169, 155, 0.14);

  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.32);
  --shadow-2: 0 8px 24px rgba(0, 0, 0, 0.44);
  --shadow-3: 0 16px 48px rgba(0, 0, 0, 0.56);

  --btn-primary-bg: #e9e6e0;
  --btn-primary-fg: #1f1e1c;
  --btn-primary-hover: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg: #1f1e1c;
    --bg-panel: #262523;
    --bg-soft: #2d2b28;
    --bg-hover: #33312d;
    --bg-active: #3a2f16;
    --border: #33312d;
    --border-strong: #454340;

    --text: #e9e6e0;
    --text-strong: #f7f5f0;
    --text-muted: #b3afa8;
    --text-soft: #918c85;
    --text-faint: #75706a;

    --accent: #e9a23b;
    --accent-hover: #f2b658;
    --accent-soft: #3a2f16;
    --accent-ring: rgba(233, 162, 59, 0.3);
    --danger: #e28b8b;
    --danger-soft: #382626;
    --success: #79bd93;

    --code-bg: #26241f;
    --code-border: #34322c;

    --hl-keyword: #c9a2dd;
    --hl-string: #9ed3a6;
    --hl-number: #e0c48a;
    --hl-title: var(--accent);
    --hl-attr: #f0a99b;
    --hl-deletion-bg: rgba(240, 169, 155, 0.14);
  }
}

/* Type scale - everything derives from --base-size so the whole UI stays
   consistent with the editor body (which is --text-body). */
:root {
  --text-xs: calc(var(--base-size) - 3px); /* 13px @16 - captions */
  --text-sm: calc(var(--base-size) - 1px); /* 15px @16 - secondary UI */
  --text-ui: var(--base-size); /* 16px @16 - primary UI text */
  --text-body: var(--base-size); /* editor matches the surrounding UI */
  --text-nav: calc(var(--base-size) - 2px); /* 14px @16 - nav & tree */
}

:root[data-font="compact"] {
  --base-size: 15px;
}
:root[data-font="default"] {
  --base-size: 16px;
}
:root[data-font="relaxed"] {
  --base-size: 17px;
}
:root[data-font="large"] {
  --base-size: 18px;
}

/* --------------------------------------------------------------------------
   Document body
   -------------------------------------------------------------------------- */

.tiptap-content {
  max-width: 760px;
  margin: 0 auto;
  outline: none;
  line-height: 1.7;
  font-size: var(--text-body);
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
}

/* First heading acts as the document title (Starlight-style). */
.tiptap-content h1:first-child {
  font-size: 2.15em;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 0;
  padding-bottom: 0.28em;
  border-bottom: 1px solid var(--border);
}

.tiptap-content > * + * {
  margin-top: 0.9em;
}

.tiptap-content h1,
.tiptap-content h2,
.tiptap-content h3,
.tiptap-content h4 {
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-top: 1.6em;
  color: var(--text-strong);
}

.tiptap-content h1 {
  font-size: 1.75em;
}
.tiptap-content h2 {
  font-size: 1.45em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--border);
}
.tiptap-content h3 {
  font-size: 1.16em;
}

.tiptap-content a {
  color: var(--accent);
  text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
  .tiptap-content a:hover {
    text-decoration: underline;
  }
}

.tiptap-content code {
  font-family: var(--font-mono);
  font-size: 0.87em;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  padding: 0.12em 0.36em;
  border-radius: 5px;
}

.tiptap-content pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow: auto;
}

.tiptap-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: 0.86em;
}

.tiptap-content blockquote {
  border-left: 3px solid var(--border-strong);
  padding-left: 14px;
  color: var(--text-muted);
  margin-left: 0;
}

.tiptap-content img {
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.tiptap-content table {
  border-collapse: collapse;
  width: 100%;
  table-layout: fixed;
  overflow: hidden;
  /* Information-dense content gets tighter leading than body copy. */
  font-size: 0.95em;
  line-height: 1.4;
}

.tiptap-content th,
.tiptap-content td {
  border: 1px solid var(--border);
  padding: 5px 10px;
  vertical-align: top;
}

.tiptap-content th p,
.tiptap-content td p {
  margin: 0;
}

.tiptap-content th > p + p,
.tiptap-content td > p + p {
  margin-top: 0.4em;
}

.tiptap-content th {
  background: var(--bg-soft);
  font-weight: 600;
  text-align: left;
}

.tiptap-content ul,
.tiptap-content ol {
  padding-left: 1.4em;
}

.tiptap-content a.wiki-link {
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 0.05em 0.32em;
  text-decoration: none;
}

/* Task lists ------------------------------------------------------------- */
.tiptap-content ul[data-type="taskList"] {
  list-style: none;
  padding-left: 0.2em;
}

.tiptap-content ul[data-type="taskList"] li {
  display: flex;
  align-items: flex-start;
  gap: 0.55em;
  /* Items are single-line rows; keep them tight. */
  margin: 0.15em 0;
}

.tiptap-content ul[data-type="taskList"] li > label {
  display: inline-flex;
  align-items: center;
  /* Vertically center the box on the first text line (line-height 1.7). */
  min-height: calc(1.7 * 1em);
  margin: 0;
  user-select: none;
}

.tiptap-content ul[data-type="taskList"] li > div {
  flex: 1 1 auto;
  min-width: 0;
}

.tiptap-content ul[data-type="taskList"] li > div > p {
  margin: 0;
}

.tiptap-content ul[data-type="taskList"] li > div > p + p {
  margin-top: 0.4em;
}

.tiptap-content ul[data-type="taskList"] input[type="checkbox"] {
  width: 1em;
  height: 1em;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.tiptap-content ul[data-type="taskList"] li[data-checked="true"] > div {
  color: var(--text-faint);
  text-decoration: line-through;
}

/* Nested task lists stay indented under their parent item. */
.tiptap-content ul[data-type="taskList"] ul[data-type="taskList"] {
  margin-top: 0.15em;
}

/* Math (KaTeX) ----------------------------------------------------------- */
.tiptap-content .math-inline {
  padding: 0 0.15em;
}

.tiptap-content .math-block {
  overflow-x: auto;
  padding: 0.4em 0;
  text-align: center;
}

.math-error {
  color: var(--danger);
}

/* Mermaid diagrams ------------------------------------------------------- */
.tiptap-content .mermaid {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  overflow-x: auto;
  text-align: center;
}

.tiptap-content .mermaid svg {
  max-width: 100%;
  height: auto;
}

.tiptap-content .mermaid-source {
  display: none;
}

.tiptap-content .mermaid.mermaid-error {
  color: var(--danger);
  text-align: left;
  white-space: pre-wrap;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* Code block syntax highlighting (lowlight / highlight.js tokens) -------- */
.tiptap-content pre code .hljs-comment,
.tiptap-content pre code .hljs-quote {
  color: var(--text-faint);
  font-style: italic;
}

.tiptap-content pre code .hljs-keyword,
.tiptap-content pre code .hljs-selector-tag,
.tiptap-content pre code .hljs-built_in,
.tiptap-content pre code .hljs-name,
.tiptap-content pre code .hljs-tag {
  color: var(--hl-keyword);
}

.tiptap-content pre code .hljs-string,
.tiptap-content pre code .hljs-attr,
.tiptap-content pre code .hljs-template-tag,
.tiptap-content pre code .hljs-addition {
  color: var(--hl-string);
}

.tiptap-content pre code .hljs-number,
.tiptap-content pre code .hljs-literal,
.tiptap-content pre code .hljs-type,
.tiptap-content pre code .hljs-params {
  color: var(--hl-number);
}

.tiptap-content pre code .hljs-title,
.tiptap-content pre code .hljs-section,
.tiptap-content pre code .hljs-function .hljs-title,
.tiptap-content pre code .hljs-title.function_ {
  color: var(--hl-title);
}

.tiptap-content pre code .hljs-attribute,
.tiptap-content pre code .hljs-variable,
.tiptap-content pre code .hljs-template-variable {
  color: var(--hl-attr);
}

.tiptap-content pre code .hljs-symbol,
.tiptap-content pre code .hljs-bullet,
.tiptap-content pre code .hljs-link,
.tiptap-content pre code .hljs-meta {
  color: var(--hl-title);
}

.tiptap-content pre code .hljs-deletion {
  color: var(--hl-attr);
  background: var(--hl-deletion-bg);
}

.tiptap-content pre code .hljs-emphasis {
  font-style: italic;
}

.tiptap-content pre code .hljs-strong {
  font-weight: 700;
}

/* Footnote footnotes (marked GFM) ---------------------------------------- */
.tiptap-content sup a,
.tiptap-content .footnote-ref a {
  text-decoration: none;
}

mark {
  background: #f6eaa0;
  color: inherit;
}

:root[data-theme="dark"] mark {
  background: #46401f;
}