/* ==========================================================================
   Indie Artist Guide - Stylesheet
   A beautiful, binge-worthy reading experience
   ========================================================================== */

/* --------------------------------------------------------------------------
   Design Tokens
   -------------------------------------------------------------------------- */

:root {
  /* Typography Scale (1.25 ratio - Major Third) */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1.125rem; /* 18px - body text */
  --font-size-lg: 1.25rem;    /* 20px */
  --font-size-xl: 1.563rem;   /* 25px */
  --font-size-2xl: 1.953rem;  /* 31px */
  --font-size-3xl: 2.441rem;  /* 39px */
  --font-size-4xl: 3.052rem;  /* 49px */

  /* Font Families */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-reading: 'Source Serif 4', Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 1.75;

  /* Spacing Scale (8px base) */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.5rem;    /* 24px */
  --space-6: 2rem;      /* 32px */
  --space-8: 3rem;      /* 48px */
  --space-10: 4rem;     /* 64px */
  --space-12: 6rem;     /* 96px */
  --space-16: 8rem;     /* 128px */

  /* Content Width */
  --content-width: 720px;
  --content-width-wide: 960px;
  --content-width-full: 1200px;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Z-index Scale */
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-fixed: 30;
  --z-modal-backdrop: 40;
  --z-modal: 50;

  /* Light Mode Colors - Terracotta palette */
  --color-bg-rgb: 253, 250, 247;
  --color-bg: #FDFAF7;
  --color-bg-subtle: #F5F0EB;
  --color-bg-muted: #EDE6DE;
  --color-bg-emphasis: #DDD4C9;

  --color-text: #2C2114;
  --color-text-secondary: #5C4A36;
  --color-text-muted: #8A7560;
  --color-text-subtle: #B3A08B;

  --color-border: #DDD4C9;
  --color-border-muted: #EDE6DE;

  --color-primary: #D4622B;
  --color-primary-hover: #B8511F;
  --color-primary-light: #FAEADE;
  --color-primary-dark: #9C3E14;

  --color-accent: #A0522D;
  --color-accent-light: #F5E6D8;

  --color-success: #5A7247;
  --color-success-light: #E8F0E2;

  --color-warning: #C07B30;
  --color-warning-light: #FDF0DC;

  --color-error: #B83C2B;
  --color-error-light: #FBEAE7;

  --color-info: #3D7A8A;
  --color-info-light: #E0F0F4;

  /* Link colors */
  --color-link: var(--color-primary);
  --color-link-hover: var(--color-primary-hover);
  --color-link-visited: var(--color-accent);
}

/* Dark Mode Colors - Terracotta palette */
[data-theme="dark"] {
  --color-bg-rgb: 21, 18, 16;
  --color-bg: #151210;
  --color-bg-subtle: #1F1B18;
  --color-bg-muted: #2E2722;
  --color-bg-emphasis: #3D3530;

  --color-text: #F0E8DD;
  --color-text-secondary: #D4C8B8;
  --color-text-muted: #B3A08B;
  --color-text-subtle: #8A7560;

  --color-border: #3D3530;
  --color-border-muted: #2E2722;

  --color-primary: #E8864E;
  --color-primary-hover: #F0A06E;
  --color-primary-light: #2E1E12;
  --color-primary-dark: #D4622B;

  --color-accent: #C4734A;
  --color-accent-light: #2A1C12;

  --color-success: #7FA06A;
  --color-success-light: #1A2614;

  --color-warning: #E0A04E;
  --color-warning-light: #2E2010;

  --color-error: #E06050;
  --color-error-light: #2E1412;

  --color-info: #5AABB8;
  --color-info-light: #122224;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  position: relative;
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-6);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-top: var(--space-10);
  margin-bottom: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-muted);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

h4 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

h5 {
  font-size: var(--font-size-lg);
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-5);
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-link-hover);
}

a:visited {
  color: var(--color-link-visited);
}

strong,
b {
  font-weight: var(--font-weight-semibold);
}

em,
i {
  font-style: italic;
}

small {
  font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Lists
   -------------------------------------------------------------------------- */

ul,
ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
}

li > ul,
li > ol {
  margin-top: var(--space-2);
  margin-bottom: var(--space-2);
}

/* Task lists */
ul.task-list {
  list-style: none;
  padding-left: 0;
}

.task-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.task-list input[type="checkbox"] {
  margin-top: 0.375rem;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Code & Pre
   -------------------------------------------------------------------------- */

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.125em 0.375em;
  background-color: var(--color-bg-muted);
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  padding: var(--space-4);
  margin-bottom: var(--space-5);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

pre code {
  padding: 0;
  background: none;
  border-radius: 0;
}

/* --------------------------------------------------------------------------
   Blockquotes
   -------------------------------------------------------------------------- */

blockquote {
  margin: var(--space-6) 0;
  padding: var(--space-4) var(--space-5);
  border-left: 4px solid var(--color-primary);
  background-color: var(--color-bg-subtle);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

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

/* --------------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------------- */

table {
  width: 100%;
  margin-bottom: var(--space-5);
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

th,
td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: var(--font-weight-semibold);
  background-color: var(--color-bg-subtle);
}

tr:hover td {
  background-color: var(--color-bg-subtle);
}

/* Responsive tables */
.table-wrapper {
  overflow-x: auto;
  margin-bottom: var(--space-5);
}

/* --------------------------------------------------------------------------
   Horizontal Rules
   -------------------------------------------------------------------------- */

hr {
  border: 0;
  height: 1px;
  background-color: var(--color-border);
  margin: var(--space-8) 0;
}

/* --------------------------------------------------------------------------
   Images
   -------------------------------------------------------------------------- */

.article-content img {
  border-radius: var(--radius-md);
  margin: var(--space-5) 0;
}

figure {
  margin: var(--space-6) 0;
}

figcaption {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-2);
}

/* --------------------------------------------------------------------------
   Layout Components
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--content-width-full);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container--narrow {
  max-width: var(--content-width);
}

.container--wide {
  max-width: var(--content-width-wide);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
  background-color: rgba(var(--color-bg-rgb), 0.95);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
  max-width: var(--content-width-full);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.site-header__brand:hover {
  color: var(--color-primary);
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-muted);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .site-header__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .site-header__nav.is-open {
    display: flex;
  }

  .site-header__nav-link {
    padding: var(--space-3) var(--space-4);
  }
}

/* --------------------------------------------------------------------------
   Theme Toggle
   -------------------------------------------------------------------------- */

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-text);
}

.theme-toggle__icon {
  width: 1.25rem;
  height: 1.25rem;
}

.theme-toggle__icon--sun {
  display: none;
}

[data-theme="dark"] .theme-toggle__icon--moon {
  display: none;
}

[data-theme="dark"] .theme-toggle__icon--sun {
  display: block;
}

/* --------------------------------------------------------------------------
   Language Switcher
   -------------------------------------------------------------------------- */

.lang-switcher {
  position: relative;
  display: flex;
  align-items: center;
}

.lang-switcher__current {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-switcher__current:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-text);
}

.lang-switcher__dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--space-1);
  padding: var(--space-1);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.lang-switcher:hover .lang-switcher__dropdown,
.lang-switcher:focus-within .lang-switcher__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-switcher__option {
  display: block;
  width: 100%;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.lang-switcher__option:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-text);
}

.lang-switcher__option.is-active {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  margin-top: var(--space-12);
  padding: var(--space-8) 0;
  background-color: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
}

.site-footer__inner {
  max-width: var(--content-width-full);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

.site-footer__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.site-footer__link:hover {
  color: var(--color-text);
}

.site-footer__bottom {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.site-footer__bottom a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

.site-footer__bottom a:hover {
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Article Layout
   -------------------------------------------------------------------------- */

.article {
  padding: var(--space-8) 0;
}

.article-header {
  max-width: var(--content-width);
  margin: 0 auto var(--space-8);
  padding: 0 var(--space-4);
  text-align: center;
}

.article-header__category {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-full);
  text-decoration: none;
}

.article-header__category:hover {
  background-color: var(--color-primary);
  color: white;
}

.article-header__title {
  margin-bottom: var(--space-4);
  font-size: var(--font-size-4xl);
  line-height: var(--line-height-tight);
}

@media (max-width: 768px) {
  .article-header__title {
    font-size: var(--font-size-3xl);
  }
}

.article-header__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.article-header__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.article-header__description {
  margin-top: var(--space-5);
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Article body with sidebar TOC */
.article-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--content-width-full);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 1024px) {
  .article-body {
    grid-template-columns: 1fr 250px;
  }
}

.article-content {
  max-width: var(--content-width);
  font-family: var(--font-reading);
  line-height: var(--line-height-loose);
}

/* First paragraph emphasis */
.article-content > p:first-child {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Header anchors - markdown-it-anchor wraps heading text inside the anchor */
.header-anchor {
  color: inherit;
  text-decoration: none;
}

.header-anchor:hover {
  color: inherit;
}

/* The # symbol shown on hover */
.header-anchor::before {
  content: "#";
  position: absolute;
  left: -1.5em;
  color: var(--color-text-subtle);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

h2:hover .header-anchor::before,
h3:hover .header-anchor::before,
.header-anchor:focus::before {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   Table of Contents
   -------------------------------------------------------------------------- */

.toc {
  position: sticky;
  top: 5rem;
  align-self: start;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  padding: var(--space-4);
  background-color: var(--color-bg-subtle);
  border-radius: var(--radius-lg);
}

@media (max-width: 1023px) {
  .toc {
    display: none;
  }
}

.toc__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

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

.toc__item {
  margin-bottom: var(--space-1);
}

.toc__item--h3 {
  padding-left: var(--space-4);
}

.toc__link {
  display: block;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  line-height: var(--line-height-snug);
}

.toc__link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-muted);
}

.toc__link.is-active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Mobile TOC */
.toc-mobile {
  display: none;
  margin-bottom: var(--space-6);
}

@media (max-width: 1023px) {
  .toc-mobile {
    display: block;
  }
}

.toc-mobile__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.toc-mobile__content {
  display: none;
  padding: var(--space-4);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.toc-mobile.is-open .toc-mobile__content {
  display: block;
}

/* --------------------------------------------------------------------------
   Related Articles
   -------------------------------------------------------------------------- */

.related-articles {
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.related-articles__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-5);
}

.related-articles__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}

.related-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.related-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.related-card__category {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.related-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

.related-card__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   Related Tools Callout
   -------------------------------------------------------------------------- */

.related-tools-callout {
  margin-top: var(--space-8);
  padding: var(--space-5);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-primary);
}

.related-tools-callout__title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.related-tools-callout__title svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.related-tools-callout__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.related-tools-callout__item {
  display: flex;
  flex-direction: column;
  padding: var(--space-3) 0;
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.related-tools-callout__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.related-tools-callout__item:first-child {
  padding-top: 0;
}

.related-tools-callout__item:hover .related-tools-callout__name {
  color: var(--color-primary);
}

.related-tools-callout__name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.related-tools-callout__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* --------------------------------------------------------------------------
   Hub Page
   -------------------------------------------------------------------------- */

.hub {
  padding: var(--space-8) 0;
}

.hub-hero {
  text-align: center;
  padding: var(--space-10) var(--space-4);
  max-width: var(--content-width);
  margin: 0 auto;
}

.hub-hero__title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

@media (max-width: 768px) {
  .hub-hero__title {
    font-size: var(--font-size-3xl);
  }
}

.hub-hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.hub-hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: white;
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.hub-hero__cta:hover {
  background-color: var(--color-primary-hover);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Category sections */
.hub-categories {
  max-width: var(--content-width-full);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.hub-category {
  margin-bottom: var(--space-10);
}

.hub-category__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-border);
}

.hub-category__icon {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
}

.hub-category__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin: 0;
}

.hub-category__articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
}

/* Article card */
.article-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-5);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.article-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.article-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

.article-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Callouts
   -------------------------------------------------------------------------- */

.callout {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  margin: var(--space-5) 0;
  border-radius: var(--radius-md);
  border-left: 4px solid;
}

.callout--info {
  background-color: var(--color-info-light);
  border-color: var(--color-info);
}

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

.callout--tip {
  background-color: var(--color-success-light);
  border-color: var(--color-success);
}

.callout--note {
  background-color: var(--color-bg-muted);
  border-color: var(--color-text-muted);
}

.callout__icon {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
}

.callout--info .callout__icon { color: var(--color-info); }
.callout--warning .callout__icon { color: var(--color-warning); }
.callout--tip .callout__icon { color: var(--color-success); }
.callout--note .callout__icon { color: var(--color-text-muted); }

.callout__content {
  flex-grow: 1;
}

.callout__content > *:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Share Buttons
   -------------------------------------------------------------------------- */

.share-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.share-buttons__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  margin-right: var(--space-2);
}

.share-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-muted);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.share-button:hover {
  color: white;
}

.share-button--twitter:hover {
  background-color: #1da1f2;
}

.share-button--linkedin:hover {
  background-color: #0077b5;
}

.share-button--copy:hover {
  background-color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Back to Top
   -------------------------------------------------------------------------- */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  color: var(--color-text-secondary);
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */

@media print {
  .site-header,
  .site-footer,
  .toc,
  .toc-mobile,
  .share-buttons,
  .back-to-top,
  .related-articles {
    display: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
    color: black;
    background: white;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 10pt;
  }

  .article-content {
    max-width: 100%;
  }
}

/* --------------------------------------------------------------------------
   Reading Progress Bar
   -------------------------------------------------------------------------- */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-primary);
  z-index: 100;
  width: 0%;
  transition: width 100ms linear;
}

/* --------------------------------------------------------------------------
   Entrance Animations
   -------------------------------------------------------------------------- */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-up {
  animation: fadeUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Related Tools CTA */
.cta-banner--tools {
  max-width: 720px;
  margin: var(--space-12, 3rem) auto var(--space-8, 2rem);
  padding: var(--space-8, 2rem);
  background: var(--color-surface, #f8f5f0);
  border-radius: 12px;
  border: 1px solid var(--color-border, rgba(0,0,0,0.08));
}

.cta-banner--tools h3 {
  font-family: var(--font-heading, 'Space Grotesk', sans-serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--color-text, #2C2114);
}

.cta-banner__tools-grid {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cta-banner__tool {
  display: block;
  padding: 0.625rem 0.875rem;
  background: var(--color-bg, #FDFAF7);
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-accent, #D4622B);
  transition: background 0.15s ease, transform 0.15s ease;
}

.cta-banner__tool:hover {
  background: var(--color-accent, #D4622B);
  color: #fff;
  transform: translateX(4px);
}

.cta-banner__tool:hover .cta-banner__tool-desc {
  color: rgba(255,255,255,0.8);
}

.cta-banner__tool-desc {
  font-weight: 400;
  color: var(--color-text-muted, #7A6E5F);
  transition: color 0.15s ease;
}

@media (prefers-reduced-motion: reduce) {
  .animate-fade-up,
  .reveal {
    animation: none;
    opacity: 1;
    transform: none;
    transition: none;
  }
}