:root {
  --color-bg: #FDFCFB; /* warm off-white */
  --color-text: #1C1C1E; /* near-black */
  --color-text-muted: #8E8E93; /* muted gray */
  --color-accent: #0A84FF; /* LifeOS sky blue */
  --color-surface: #FFFFFF;
  --color-border: #E5E5EA;
  --color-focus: rgba(10, 132, 255, 0.5);

  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #000000;
    --color-text: #FFFFFF;
    --color-text-muted: #8E8E93;
    --color-accent: #0A84FF;
    --color-surface: #1C1C1E;
    --color-border: #38383A;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-system);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Focus states */
:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
}

p.lead {
  font-size: 1.25rem;
  color: var(--color-text);
  max-width: 600px;
}

.eyebrow {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
  display: block;
}

/* Header/Nav */
.site-header {
  padding: var(--spacing-md) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
}
.brand:hover {
  text-decoration: none;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-links a {
  color: var(--color-text);
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  color: #FFFFFF;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
  text-decoration: none;
}

.button:hover {
  opacity: 0.9;
  text-decoration: none;
  color: #FFFFFF;
}

.button.secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.button.secondary:hover {
  background-color: var(--color-border);
  color: var(--color-text);
}

/* Sections */
.section {
  padding: var(--spacing-xl) 0;
}

.section-narrow {
  max-width: 800px;
  margin: 0 auto;
}

.hero {
  padding: var(--spacing-xl) 0 var(--spacing-xl);
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  letter-spacing: -0.04em;
  max-width: 800px;
  margin: 0 auto var(--spacing-sm);
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 4rem;
  }
}

.hero .lead {
  margin: 0 auto var(--spacing-lg);
  font-size: 1.25rem;
}

@media (min-width: 768px) {
  .hero .lead {
    font-size: 1.5rem;
  }
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-notice {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

.card h3 {
  margin-top: 0;
}

.card p:last-child {
  margin-bottom: 0;
}

.text-examples {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

/* Footer */
.site-footer {
  padding: var(--spacing-xl) 0 var(--spacing-md);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.footer-icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  filter: grayscale(100%);
  opacity: 0.7;
  object-fit: contain;
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

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

/* Content Pages (Privacy, Terms, Support) */
.content-page {
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-xl);
}

.content-page h1 {
  margin-bottom: var(--spacing-xs);
}

.content-page .meta {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.content-page h2 {
  margin-top: var(--spacing-lg);
  font-size: 1.5rem;
}

.content-page ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-md);
  color: var(--color-text-muted);
}

.content-page li {
  margin-bottom: var(--spacing-xs);
}

.contact-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-card h3 {
  margin-top: 0;
}

.contact-card a {
  font-weight: 500;
  font-size: 1.125rem;
}

/* Mobile Nav Tweak */
@media (max-width: 767px) {
  .site-header {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }
  
  .nav-links {
    display: flex;
    width: 100%;
    justify-content: center;
    gap: var(--spacing-sm);
    order: 3;
    flex-wrap: wrap;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}