/* ==========================================================================
   MyMonad - Elegant Philosophy Meets Modern Clarity
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Warm, classical palette */
  --color-bg: #FAFAF8;
  --color-bg-subtle: #F5F3EF;
  --color-text: #1A1A1A;
  --color-text-muted: #5A5A5A;
  --color-accent: #5B4F3D;
  --color-accent-light: #8B7355;
  --color-border: #E5E3DF;

  /* Typography */
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Font sizes - fluid typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --text-3xl: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  --text-4xl: clamp(2.5rem, 1.8rem + 3.5vw, 4rem);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --max-width-content: 70ch;
  --max-width-wide: 90rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* Dark mode - system preference */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #1A1918;
    --color-bg-subtle: #252321;
    --color-text: #F5F3EF;
    --color-text-muted: #A5A5A5;
    --color-accent: #C4A77D;
    --color-accent-light: #D4BC9A;
    --color-border: #3A3835;
  }
}

/* Dark mode - manual override */
:root[data-theme="dark"] {
  --color-bg: #1A1918;
  --color-bg-subtle: #252321;
  --color-text: #F5F3EF;
  --color-text-muted: #A5A5A5;
  --color-accent: #C4A77D;
  --color-accent-light: #D4BC9A;
  --color-border: #3A3835;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  margin-top: 0;
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
  margin-top: 0;
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--color-accent-light);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-bg-subtle);
  padding: 0.125em 0.375em;
  border-radius: 3px;
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background-color: var(--color-bg-subtle);
  padding: var(--space-lg);
  border-radius: 6px;
  overflow-x: auto;
  margin: var(--space-xl) 0;
}

pre code {
  background: none;
  padding: 0;
}

blockquote {
  margin: var(--space-xl) 0;
  padding: var(--space-lg) var(--space-xl);
  border-left: 3px solid var(--color-accent);
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text-muted);
}

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

/* --------------------------------------------------------------------------
   Accessibility
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

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

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
header[role="banner"] {
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

main {
  min-height: calc(100vh - 200px);
}

footer[role="contentinfo"] {
  padding: var(--space-2xl) var(--space-xl);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-4xl);
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width-wide);
  margin: 0 auto;
}

.site-logo {
  text-decoration: none;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: 0.025em;
}

.nav-links a:hover {
  color: var(--color-accent);
}

/* Mobile navigation */
@media (max-width: 768px) {
  .site-nav {
    flex-direction: column;
    gap: var(--space-md);
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md) var(--space-lg);
  }
}

/* --------------------------------------------------------------------------
   Theme Toggle
   -------------------------------------------------------------------------- */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer;
  color: var(--color-text);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.theme-toggle svg {
  width: 1em;
  height: 1em;
}

/* Icons hidden by default, JS controls visibility */
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  display: none;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-bg);
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-light);
  color: var(--color-bg);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn-secondary:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   Home Page
   -------------------------------------------------------------------------- */
.home {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* Hero */
.hero {
  text-align: center;
  padding: var(--space-4xl) 0;
}

.hero-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 50ch;
  margin: 0 auto var(--space-2xl);
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-2xl);
  padding: var(--space-4xl) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.pillar h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.pillar p {
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* How It Works Preview */
.how-it-works-preview {
  padding: var(--space-4xl) 0;
  text-align: center;
}

.how-it-works-preview h2 {
  margin-bottom: var(--space-2xl);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-2xl);
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  text-align: left;
  padding: var(--space-lg);
  background-color: var(--color-bg-subtle);
  border-radius: 6px;
}

.steps li::before {
  content: counter(step);
  display: block;
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.step-name {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.step-desc {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Manifesto Preview */
.manifesto-preview {
  padding: var(--space-4xl) 0;
  text-align: center;
}

.manifesto-preview blockquote {
  max-width: var(--max-width-content);
  margin: 0 auto var(--space-2xl);
  text-align: left;
}

/* Learn More Links */
.learn-more {
  font-size: var(--text-sm);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer-content {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-2xl);
}

.footer-tagline {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--color-text-muted);
}

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

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.copyright {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Content Pages
   -------------------------------------------------------------------------- */
.page-content {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

.page-content h1 {
  margin-bottom: var(--space-2xl);
}

/* --------------------------------------------------------------------------
   Documentation
   -------------------------------------------------------------------------- */
.docs-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: var(--space-3xl);
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
}

.docs-sidebar {
  position: sticky;
  top: var(--space-xl);
  height: fit-content;
}

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

.docs-nav li {
  margin-bottom: var(--space-sm);
}

.docs-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
}

.docs-nav a:hover,
.docs-nav a[aria-current="page"] {
  color: var(--color-accent);
}

.docs-content {
  min-width: 0;
}

@media (max-width: 900px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }

  .docs-sidebar {
    position: static;
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-xl);
  }
}

/* --------------------------------------------------------------------------
   Blog
   -------------------------------------------------------------------------- */
.blog-list { list-style: none; padding: 0; margin: 0; }
.blog-item { padding: var(--space-xl) 0; border-bottom: 1px solid var(--color-border); }
.blog-item:last-child { border-bottom: none; }
.blog-item time { font-size: var(--text-sm); color: var(--color-text-muted); }
.blog-item h2 { font-size: var(--text-xl); margin: var(--space-sm) 0; }
.blog-item h2 a { color: var(--color-text); text-decoration: none; }
.blog-item h2 a:hover { color: var(--color-accent); }
.blog-item p { color: var(--color-text-muted); margin-bottom: 0; }
.blog-post header { margin-bottom: var(--space-2xl); }
.blog-post header time { font-size: var(--text-sm); color: var(--color-text-muted); }
.blog-post header h1 { margin-top: var(--space-sm); }