/* ───────────────────────────────────────────────────────────────────────────
   landing.css — shared styles for static marketing pages.
   Self-contained: do not depend on the React app's bundled CSS.
   Mirrors design tokens from src/styles/tokens.css (kept in sync manually).
   ─────────────────────────────────────────────────────────────────────────── */

:root {
  --color-primary: #6ABF6A;
  --color-primary-hover: #5AAE5A;
  --color-primary-active: #4A9D4A;
  --color-primary-light: #E8F5E8;

  --color-secondary: #6D3A3A;
  --color-secondary-light: #F0E4E4;

  --color-bg: #FAFAF7;
  --color-surface: #FFFFFF;

  --color-text: #1A1A1A;
  --color-text-secondary: #5A5A57;
  --color-text-tertiary: #8A8A85;

  --color-border: #E8E6E1;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  --max-width: 760px;
  --max-width-wide: 1100px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #4CAF50;
    --color-primary-hover: #43A047;
    --color-primary-active: #388E3C;
    --color-primary-light: #161A16;

    --color-secondary: #C48A8A;
    --color-secondary-light: #1A1616;

    --color-bg: #121212;
    --color-surface: #1C1C1C;

    --color-text: #E8E6E1;
    --color-text-secondary: #B0B0AB;
    --color-text-tertiary: #858580;

    --color-border: #383838;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  }
}

/* ── Reset ─────────────────────────────────────────────────────────────── */

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

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

img, svg { display: block; max-width: 100%; height: auto; }

a {
  color: var(--color-primary-active);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { color: var(--color-primary-hover); }

/* ── Layout ────────────────────────────────────────────────────────────── */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Header ────────────────────────────────────────────────────────────── */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.0625rem;
}

.site-header__brand svg {
  color: var(--color-secondary);
}

.site-header__nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.9375rem;
}

.site-header__nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
}

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

@media (max-width: 600px) {
  .site-header__nav { display: none; }
}

/* ── Hero ──────────────────────────────────────────────────────────────── */

.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--color-text);
}

.hero__lede {
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

/* ── Buttons ───────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  font: inherit;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease, transform 150ms ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-primary);
  color: #FFFFFF;
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  color: #FFFFFF;
}
.btn--primary:active {
  background: var(--color-primary-active);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-text-secondary);
  color: var(--color-text);
}

/* ── Prose (article body) ──────────────────────────────────────────────── */

.prose {
  padding: 1rem 0 4rem;
}

.prose > * + * { margin-top: 1.25rem; }
.prose h2 + *, .prose h3 + * { margin-top: 0.75rem; }

.prose p { margin: 0; }

.prose h2 {
  font-size: 1.625rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  font-weight: 700;
  margin: 2.75rem 0 0;
  color: var(--color-text);
}

.prose h3 {
  font-size: 1.1875rem;
  line-height: 1.35;
  font-weight: 600;
  margin: 2rem 0 0;
  color: var(--color-text);
}

.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin: 0;
}

.prose li + li { margin-top: 0.5rem; }

.prose strong { font-weight: 600; color: var(--color-text); }

.prose blockquote {
  margin: 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text);
}

/* ── Feature grid ──────────────────────────────────────────────────────── */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem !important;
}

.feature-card {
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.feature-card h3 {
  margin: 0 0 0.375rem !important;
  font-size: 1.0625rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ── CTA card (mid-page or end-page install prompt) ────────────────────── */

.cta-card {
  margin-top: 2.5rem !important;
  padding: 2rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.cta-card h2 {
  margin: 0 0 0.5rem !important;
  font-size: 1.375rem;
}

.cta-card p {
  margin: 0 0 1.25rem !important;
  color: var(--color-text-secondary);
  font-size: 1rem;
}

/* ── Related links ─────────────────────────────────────────────────────── */

.related {
  margin-top: 3rem !important;
  padding: 1.75rem 0 0;
  border-top: 1px solid var(--color-border);
}

.related h2 {
  font-size: 1rem !important;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  margin: 0 0 1rem !important;
}

.related ul {
  list-style: none;
  padding: 0 !important;
  margin: 0 !important;
}

.related li {
  padding: 0.5rem 0;
}

.related a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}

.related a:hover {
  color: var(--color-primary-active);
  text-decoration: underline;
}

/* ── Footer ────────────────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer__links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.site-footer__links a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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

/* ── FAQ ──────────────────────────────────────────────────────────────── */

.faq {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.faq details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.125rem;
  transition: border-color 0.15s ease;
}

.faq details[open] {
  border-color: var(--color-primary);
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--color-text);
  list-style: none;
  position: relative;
  padding-right: 1.75rem;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.375rem;
  font-weight: 400;
  line-height: 1;
  color: var(--color-text-secondary);
}

.faq details[open] summary::after {
  content: "\2212";
  color: var(--color-primary);
}

.faq details > p {
  margin: 0.625rem 0 0;
  color: var(--color-text-secondary);
}

.faq details > p + p {
  margin-top: 0.5rem;
}

/* ── Utility ───────────────────────────────────────────────────────────── */

.hide-mobile { }
@media (max-width: 600px) {
  .hide-mobile { display: none; }
}