/* ==========================================================================
   🪦 theme-textpattern.css — Classic Textpattern 4.0 / Dean Allen Aesthetic
   Pure CSS • Zero External Dependencies • Local Only • Offline Immortal
   ========================================================================== */

:root {
  /* Core Color Palette: Warm Linen, Cream, Slate & Crimson */
  --txp-page-bg: #f2efe9;
  --txp-paper-bg: #ffffff;
  --txp-sidebar-bg: #fbfaf7;
  --txp-header-bg: #272c30;
  --txp-header-text: #ffffff;
  --txp-header-tagline: #b0b7bd;
  
  /* Text & Accents */
  --txp-text-main: #2b2b2b;
  --txp-text-muted: #66625b;
  --txp-text-light: #88837a;
  --txp-crimson: #8c2323;
  --txp-crimson-hover: #b02e2e;
  --txp-crimson-light: #fbf2f2;
  --txp-slate: #3f474e;
  --txp-slate-light: #eef2f5;

  /* Borders & Dividers */
  --txp-border-color: #ded9cd;
  --txp-border-dark: #c4beaf;
  --txp-border-subtle: #ede9df;
  
  /* Code & Preformatted */
  --txp-code-bg: #f7f6f0;
  --txp-code-border: #e2ddd2;
  --txp-code-text: #782323;
  --txp-pre-bg: #282c34;
  --txp-pre-text: #abb2bf;
  
  /* Typography Stacks (100% Local System Fonts) */
  --txp-font-serif: "Georgia", "Palatino Linotype", "Book Antiqua", Palatino, "Times New Roman", Times, serif;
  --txp-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Trebuchet MS", "Lucida Grande", "Helvetica Neue", Arial, sans-serif;
  --txp-font-mono: ui-monospace, "SFMono-Regular", "Consolas", "Liberation Mono", "Menlo", "Courier New", Courier, monospace;
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

body.txp-body {
  margin: 0;
  padding: 24px 16px;
  background-color: var(--txp-page-bg);
  color: var(--txp-text-main);
  font-family: var(--txp-font-serif);
  background-image: radial-gradient(var(--txp-border-dark) 0.75px, transparent 0.75px);
  background-size: 20px 20px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Master Container */
.txp-container {
  max-width: 1060px;
  margin: 0 auto;
  background: var(--txp-paper-bg);
  border: 1px solid var(--txp-border-dark);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.04);
}

/* ==========================================================================
   Header & Masthead
   ========================================================================== */

.txp-header {
  background-color: var(--txp-header-bg);
  color: var(--txp-header-text);
  border-bottom: 3px solid var(--txp-crimson);
}

.txp-branding {
  padding: 36px 36px 28px 36px;
}

.txp-site-name {
  margin: 0 0 6px 0;
  font-family: var(--txp-font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.txp-site-name a {
  color: var(--txp-header-text);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
}

.txp-site-name a:hover {
  color: #ffcccc;
}

.txp-amp {
  color: var(--txp-crimson);
  font-style: italic;
  font-weight: 400;
  padding: 0 2px;
}

.txp-tagline {
  margin: 0;
  font-family: var(--txp-font-sans);
  font-size: 0.95rem;
  color: var(--txp-header-tagline);
  letter-spacing: 0.02em;
}

/* Horizontal Tab Navigation */
.txp-nav {
  background-color: #1f2327;
  border-top: 1px solid #383e45;
  padding: 0 24px;
}

.txp-nav ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2px;
}

.txp-nav li {
  margin: 0;
}

.txp-nav-link {
  display: block;
  padding: 10px 16px;
  font-family: var(--txp-font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: #d1d5db;
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-top: 2px solid transparent;
  transition: all 0.15s ease-in-out;
}

.txp-nav-link:hover {
  background-color: var(--txp-crimson);
  color: #ffffff;
  border-top-color: #ff6666;
}

/* ==========================================================================
   Two-Column Layout Grid
   ========================================================================== */

.txp-layout-body {
  display: flex;
  flex-direction: row;
  min-height: 600px;
}

/* Main Content Column */
.txp-content {
  flex: 1 1 68%;
  min-width: 0; /* Prevents overflow */
  padding: 36px 40px;
  background-color: var(--txp-paper-bg);
}

/* Sidebar Column */
.txp-sidebar {
  flex: 0 0 32%;
  min-width: 280px;
  max-width: 340px;
  background-color: var(--txp-sidebar-bg);
  border-left: 1px solid var(--txp-border-color);
  padding: 32px 24px;
}

/* ==========================================================================
   Article & Typography
   ========================================================================== */

.txp-article-header {
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--txp-border-color);
}

.txp-article-title {
  margin: 0 0 10px 0;
  font-family: var(--txp-font-serif);
  font-size: 2.15rem;
  font-weight: 700;
  color: #1a1a1a;
  line-height: 1.25;
}

.txp-article-meta {
  font-family: var(--txp-font-sans);
  font-size: 0.825rem;
  color: var(--txp-text-light);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.txp-meta-label {
  font-weight: 600;
  color: var(--txp-text-muted);
}

.txp-meta-divider {
  color: var(--txp-border-dark);
}

.txp-article-deck {
  margin-top: 14px;
  padding: 12px 16px;
  background-color: var(--txp-crimson-light);
  border-left: 3px solid var(--txp-crimson);
  font-family: var(--txp-font-serif);
  font-size: 1.05rem;
  font-style: italic;
  color: #4a1f1f;
}

.txp-article-deck p {
  margin: 0;
}

/* Rich Body Styling */
.txp-article-body {
  font-size: 1.05rem;
  color: var(--txp-text-main);
}

.txp-article-body h1,
.txp-article-body h2,
.txp-article-body h3,
.txp-article-body h4,
.txp-article-body h5,
.txp-article-body h6 {
  font-family: var(--txp-font-serif);
  color: #1a1a1a;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
  line-height: 1.3;
}

.txp-article-body h1 {
  font-size: 1.8rem;
  border-bottom: 2px solid var(--txp-crimson);
  padding-bottom: 6px;
}

.txp-article-body h2 {
  font-size: 1.5rem;
  border-bottom: 1px dotted var(--txp-border-dark);
  padding-bottom: 4px;
}

.txp-article-body h3 {
  font-size: 1.25rem;
  color: var(--txp-crimson);
}

.txp-article-body h4 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--txp-slate);
}

.txp-article-body p {
  margin-top: 0;
  margin-bottom: 1.25rem;
}

/* Hyperlinks */
a {
  color: var(--txp-crimson);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 35, 35, 0.25);
  transition: all 0.15s ease-in-out;
}

a:hover {
  color: var(--txp-crimson-hover);
  border-bottom-color: var(--txp-crimson);
  background-color: var(--txp-crimson-light);
}

/* Blockquotes */
blockquote {
  margin: 1.5rem 0;
  padding: 14px 20px;
  background-color: #fcfbfa;
  border-left: 4px solid var(--txp-crimson);
  border-top: 1px solid var(--txp-border-subtle);
  border-right: 1px solid var(--txp-border-subtle);
  border-bottom: 1px solid var(--txp-border-subtle);
  font-style: italic;
  color: #4a463e;
}

blockquote p:last-child {
  margin-bottom: 0;
}

blockquote cite {
  display: block;
  margin-top: 8px;
  font-family: var(--txp-font-sans);
  font-size: 0.8rem;
  font-style: normal;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--txp-text-light);
}

/* Lists */
.txp-article-body ul,
.txp-article-body ol {
  margin-top: 0;
  margin-bottom: 1.35rem;
  padding-left: 28px;
}

.txp-article-body li {
  margin-bottom: 0.4rem;
}

.txp-article-body li > ul,
.txp-article-body li > ol {
  margin-top: 0.3rem;
  margin-bottom: 0.3rem;
}

/* Definition Lists */
dl {
  margin: 1.25rem 0;
  background: var(--txp-sidebar-bg);
  border: 1px solid var(--txp-border-color);
  padding: 16px 20px;
}

dt {
  font-family: var(--txp-font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--txp-crimson);
  margin-top: 8px;
}

dt:first-child {
  margin-top: 0;
}

dd {
  margin-left: 0;
  margin-bottom: 12px;
  padding-left: 16px;
  border-left: 2px solid var(--txp-border-color);
  color: var(--txp-text-main);
  font-size: 0.95rem;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-family: var(--txp-font-sans);
  font-size: 0.9rem;
  background: #ffffff;
  border: 1px solid var(--txp-border-dark);
}

th {
  background-color: var(--txp-slate);
  color: #ffffff;
  font-weight: 600;
  text-align: left;
  padding: 10px 14px;
  letter-spacing: 0.03em;
  border: 1px solid var(--txp-slate);
}

td {
  padding: 9px 14px;
  border: 1px solid var(--txp-border-color);
  vertical-align: top;
}

tr:nth-child(even) td {
  background-color: #faf9f6;
}

tr:hover td {
  background-color: var(--txp-crimson-light);
}

/* Code & Preformatted */
code {
  font-family: var(--txp-font-mono);
  font-size: 0.88em;
  background-color: var(--txp-code-bg);
  color: var(--txp-code-text);
  border: 1px solid var(--txp-code-border);
  padding: 1px 5px;
  border-radius: 2px;
}

pre {
  margin: 1.5rem 0;
  padding: 16px 20px;
  background-color: #21252b;
  color: #e5e9f0;
  font-family: var(--txp-font-mono);
  font-size: 0.88rem;
  line-height: 1.5;
  border: 1px solid #181a1f;
  border-left: 4px solid var(--txp-crimson);
  overflow-x: auto;
}

pre code {
  background: transparent;
  color: inherit;
  border: none;
  padding: 0;
  font-size: inherit;
}

/* Phrase Modifiers */
del {
  color: #9e4a4a;
  text-decoration: line-through;
}

ins {
  color: #2b6e3f;
  text-decoration: underline;
  background-color: #f0f8f2;
}

kbd {
  font-family: var(--txp-font-mono);
  font-size: 0.8em;
  background-color: #f7f7f7;
  color: #333333;
  border: 1px solid #ccc;
  border-bottom: 2px solid #bbb;
  padding: 2px 6px;
  border-radius: 3px;
}

abbr {
  border-bottom: 1px dotted var(--txp-crimson);
  cursor: help;
}

hr {
  border: 0;
  height: 1px;
  background-color: var(--txp-border-color);
  margin: 2.25rem 0;
}

/* Callout Note Boxes */
.txp-callout {
  margin: 1.5rem 0;
  padding: 16px 20px;
  border-left: 4px solid var(--txp-slate);
  background-color: var(--txp-slate-light);
  font-family: var(--txp-font-sans);
  font-size: 0.95rem;
}

.txp-callout-title {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  color: var(--txp-slate);
}

.txp-callout-warning {
  border-left-color: var(--txp-crimson);
  background-color: var(--txp-crimson-light);
}

.txp-callout-warning .txp-callout-title {
  color: var(--txp-crimson);
}

/* Article Footer */
.txp-article-footer {
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--txp-border-color);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: var(--txp-font-sans);
  font-size: 0.85rem;
  color: var(--txp-text-muted);
}

.txp-article-signature p {
  margin: 0;
}

.txp-article-back-top a {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ==========================================================================
   Sidebar Widgets
   ========================================================================== */

.txp-widget {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px dotted var(--txp-border-dark);
  font-family: var(--txp-font-sans);
  font-size: 0.9rem;
}

.txp-widget:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.txp-widget-title {
  font-family: var(--txp-font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #1a1a1a;
  margin: 0 0 12px 0;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--txp-crimson);
}

.txp-widget p {
  margin: 0 0 10px 0;
  color: var(--txp-text-muted);
  line-height: 1.5;
}

.txp-sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.txp-sidebar-list li {
  margin-bottom: 6px;
}

.txp-sidebar-list a {
  display: block;
  padding: 4px 6px;
  color: var(--txp-text-main);
  text-decoration: none;
  border-bottom: 1px dotted var(--txp-border-color);
  font-weight: 500;
  transition: all 0.15s ease;
}

.txp-sidebar-list a:hover {
  background-color: var(--txp-crimson-light);
  color: var(--txp-crimson);
  border-bottom-color: var(--txp-crimson);
  padding-left: 10px;
}

/* Badge Pills */
.txp-badge-container {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.txp-pill {
  display: inline-block;
  background-color: #eae7dd;
  color: #4a463e;
  border: 1px solid var(--txp-border-dark);
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Cheatsheet Mini-Table */
.txp-mini-table {
  width: 100%;
  margin: 0;
  border: 1px solid var(--txp-border-color);
  font-size: 0.8rem;
}

.txp-mini-table td {
  padding: 4px 8px;
  border: 1px solid var(--txp-border-subtle);
}

.txp-mini-table tr:nth-child(even) td {
  background-color: #f7f5ed;
}

/* Status Box */
.txp-status-box {
  background: #ffffff;
  border: 1px solid var(--txp-border-color);
  padding: 10px 14px;
}

.txp-status-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  font-size: 0.8rem;
  border-bottom: 1px dotted var(--txp-border-subtle);
}

.txp-status-row:last-child {
  border-bottom: none;
}

.txp-status-key {
  font-weight: 600;
  color: var(--txp-text-muted);
}

.txp-status-val {
  color: var(--txp-crimson);
  font-weight: 600;
}

.txp-small-text {
  font-size: 0.825rem;
  color: var(--txp-text-light);
}

/* ==========================================================================
   Site Footer
   ========================================================================== */

.txp-footer {
  background-color: #1f2327;
  color: #9ca3af;
  border-top: 3px solid var(--txp-crimson);
  padding: 24px 36px;
  font-family: var(--txp-font-sans);
  font-size: 0.85rem;
  text-align: center;
}

.txp-footer a {
  color: #d1d5db;
  border-bottom-color: rgba(209, 213, 219, 0.4);
}

.txp-footer a:hover {
  color: #ffffff;
  background: transparent;
  border-bottom-color: #ffffff;
}

.txp-footer-line {
  margin: 0 0 6px 0;
}

.txp-footer-meta {
  margin: 0;
  font-size: 0.775rem;
  color: #6b7280;
}

.txp-footer-meta code {
  background: #111417;
  color: #e5e7eb;
  border-color: #374151;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 860px) {
  body.txp-body {
    padding: 10px;
  }

  .txp-branding {
    padding: 24px 20px 18px 20px;
  }

  .txp-site-name {
    font-size: 1.75rem;
  }

  .txp-nav {
    padding: 0 12px;
  }

  .txp-nav-link {
    padding: 8px 12px;
    font-size: 0.8rem;
  }

  .txp-layout-body {
    flex-direction: column;
  }

  .txp-content {
    padding: 24px 20px;
  }

  .txp-sidebar {
    border-left: none;
    border-top: 2px solid var(--txp-border-color);
    max-width: 100%;
    padding: 28px 20px;
  }

  .txp-article-title {
    font-size: 1.75rem;
  }
}

/* Accessibility: visible keyboard focus indicator for interactive elements. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--txp-crimson);
  outline-offset: 2px;
}

/* Narrow viewports: let wide tables scroll instead of blowing out layout. */
table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
}

/* Images never exceed the text column. */
img {
  max-width: 100%;
  height: auto;
}

/* Long inline code wraps instead of blowing out narrow viewports.
   Scoped away from pre > code so code fences keep horizontal scrolling. */
:not(pre) > code {
  overflow-wrap: anywhere;
}

/* Honor GFM column alignment from the renderer (align attributes);
   blanket cell text-align would otherwise flatten centered/right columns. */
th[align="center"],
td[align="center"] {
  text-align: center;
}

th[align="right"],
td[align="right"] {
  text-align: right;
}