/* StrictDoc website — light theme, dark via prefers-color-scheme */

:root {
  --color-bg-main: #F2F5F9;
  --color-bg-contrast: #fff;
  --color-fg-main: #444;
  --color-fg-contrast: #111;
  --color-fg-secondary: rgba(0, 0, 0, .5);
  --color-fg-accent: rgb(242, 100, 42);
  --color-bg-accent: rgb(242 100 42 / 8%);
  --color-border: rgba(0, 0, 0, .1);
  --color-border-strong: rgba(0, 0, 0, .18);

  --base-font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --code-font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;

  --max-width: 1100px;
  --section-padding: 64px 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-main: #1c1f2e;
    --color-bg-contrast: #252839;
    --color-fg-main: #c8ccd8;
    --color-fg-contrast: #eceef4;
    --color-fg-secondary: rgba(255, 255, 255, .45);
    --color-fg-accent: rgb(242, 100, 42);
    --color-bg-accent: rgb(242 100 42 / 10%);
    --color-border: rgba(255, 255, 255, .08);
    --color-border-strong: rgba(255, 255, 255, .14);
  }
}

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--base-font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-fg-main);
  background-color: var(--color-bg-main);
}

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

/* Nav */

.site-nav {
  background-color: var(--color-bg-contrast);
  border-bottom: 1px solid var(--color-border);
  padding: 0 24px;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-fg-accent);
  letter-spacing: -0.01em;
}
.nav-logo:hover { text-decoration: none; opacity: 0.8; }

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--color-fg-main);
  font-size: 1rem;
  font-weight: 500;
}
.nav-links a:hover { color: var(--color-fg-accent); text-decoration: none; }

/* Hero */

.hero {
  background-color: var(--color-bg-main);
  border-bottom: 1px solid var(--color-border);
  padding: 80px 24px 96px;
}

.hero-inner {
  max-width: 720px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
  color: var(--color-fg-contrast);
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-fg-main);
  margin: 0 0 36px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.install-cmd {
  display: inline-block;
  font-family: var(--code-font-family);
  font-size: 0.9375rem;
  background: var(--color-bg-contrast);
  border: 1px solid var(--color-border-strong);
  border-radius: 6px;
  padding: 10px 16px;
  color: var(--color-fg-accent);
  letter-spacing: 0.01em;
  user-select: all;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-border-strong);
  color: var(--color-fg-main);
}
.btn-secondary:hover {
  border-color: var(--color-fg-accent);
  color: var(--color-fg-accent);
  text-decoration: none;
}

/* What is StrictDoc */

.what-is {
  background: var(--color-bg-contrast);
  border-bottom: 1px solid var(--color-border);
  padding: var(--section-padding);
}

.what-is-inner {
  max-width: 760px;
  margin: 0 auto;
}

.what-is-inner h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 28px;
  color: var(--color-fg-contrast);
}

.what-is-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.what-is-list li {
  padding-left: 20px;
  border-left: 3px solid var(--color-fg-accent);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-fg-main);
}

.what-is-list strong {
  color: var(--color-fg-contrast);
}

/* Use cases */

.use-cases {
  background: var(--color-bg-accent);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--section-padding);
}

.use-cases-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.use-cases-inner h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 28px;
  color: var(--color-fg-contrast);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 28px;
}

.use-case {
  border-left: 3px solid var(--color-fg-accent);
  padding-left: 20px;
}

.use-case h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--color-fg-contrast);
}

.use-case p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-fg-secondary);
  line-height: 1.65;
}

.use-cases-link {
  font-size: 0.9375rem;
  font-weight: 600;
}

/* Community */

.community {
  padding: var(--section-padding);
}

.community-inner {
  max-width: 680px;
  margin: 0 auto;
}

.community h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--color-fg-contrast);
}

.community p {
  margin: 0 0 24px;
  color: var(--color-fg-secondary);
  font-size: 1rem;
}

.community-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.community-links a {
  font-weight: 600;
}

/* Nav dropdown */

.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--color-bg-contrast);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 6px 6px;
  min-width: 200px;
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu li a {
  display: block;
  padding: 8px 16px;
  color: var(--color-fg-main);
  font-size: 0.9375rem;
  white-space: nowrap;
}

.nav-dropdown-menu li a:hover {
  background: var(--color-bg-main);
  color: var(--color-fg-accent);
  text-decoration: none;
}

/* Page layout with TOC */

.page-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  align-items: start;
  max-width: calc(var(--max-width) + 220px);
  margin: 0 auto;
  padding: 0 24px;
  gap: 0;
}

.toc-sidebar {
  position: sticky;
  top: 24px;
  padding: 48px 0 48px;
  align-self: start;
}

.toc-inner {
  border-right: 1px solid var(--color-border);
  padding-right: 24px;
}

.toc-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-fg-secondary);
  margin: 0 0 12px;
}

.toc-inner nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toc-inner nav ul ul {
  padding-left: 12px;
  margin-top: 4px;
}

.toc-inner nav a {
  font-size: 0.875rem;
  color: var(--color-fg-secondary);
  line-height: 1.4;
}

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

/* Page content (single pages) */

.page-content {
  padding: 48px 0 64px 48px;
  min-width: 0;
}

.page-content-full {
  padding: var(--section-padding);
}

.page-content-full .page-inner {
  max-width: 720px;
  margin: 0 auto;
}

.page-inner {
  max-width: 680px;
}

.page-inner h1 {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 24px;
  letter-spacing: -0.01em;
  color: var(--color-fg-contrast);
}

.page-inner h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 40px 0 10px;
  color: var(--color-fg-contrast);
}

.page-inner p, .page-inner li {
  color: var(--color-fg-main);
}

.page-inner code {
  font-family: var(--code-font-family);
  font-size: 0.875em;
  background: var(--color-bg-main);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 5px;
}

.page-inner pre {
  background: var(--color-bg-contrast);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 20px;
  overflow-x: auto;
}

.page-inner pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
}

/* Footer */

.site-footer {
  background: var(--color-bg-contrast);
  border-top: 1px solid var(--color-border);
  padding: 32px 24px;
  font-size: 0.875rem;
  color: var(--color-fg-secondary);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-inner p { margin: 0; }

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--color-fg-secondary);
}
.footer-links a:hover { color: var(--color-fg-contrast); text-decoration: none; }

/* Responsive */

@media (max-width: 900px) {
  .page-layout {
    grid-template-columns: 1fr;
    padding: 0;
  }
  .toc-sidebar {
    position: static;
    padding: 24px 24px 0;
    border-bottom: 1px solid var(--color-border);
  }
  .toc-inner {
    border-right: none;
    padding-right: 0;
  }
  .page-content {
    padding: 32px 24px 48px;
  }
}

@media (max-width: 600px) {
  .nav-links { gap: 20px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}