/* SizeSync public site styles.
 *
 * Canonical design tokens copied from UI-PLAN.md so the site reads as the
 * same product as the extension. The extension uses Shadow DOM and inline
 * styles; the website doesn't have those constraints, but uses identical
 * colour, typography, and spacing.
 *
 * Single CSS file, no preprocessor, no framework. The whole site is three
 * static HTML pages. Keeping it boring on purpose.
 */

:root {
  /* Primary palette (from UI-PLAN.md, /Colour System). */
  --color-coral:        #E8412E;
  --color-coral-light:  #FF6B58;
  --color-coral-bg:     rgba(232, 65, 46, 0.09);
  --color-dark:         #0F0D0C;
  --color-off-white:    #F8F7F5;
  --color-surface-1:    #F8F7F5;
  --color-surface-2:    #F2F0ED;
  --color-surface-3:    #ECEAE6;
  --color-near-black:   #0B0A09;
  --color-heading:      #3E2723;
  --color-text:         #241B19;
  --color-muted:        #6B6560;
  --color-muted-faint:  #9C958E;
  --color-muted-fainter:#A09990;

  /* Opacity borders (UI-PLAN /Colour Rules: never hex borders on warm bg). */
  --border-default:     1px solid rgba(0, 0, 0, 0.08);
  --border-subtle:      1px solid rgba(0, 0, 0, 0.06);
  --border-coral:       1px solid var(--color-coral);

  /* Typography. */
  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif:   'Fraunces', Georgia, serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Spacing scale (4pt base, 8pt grid per UI-PLAN). */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 16px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  padding: 0;
  background: var(--color-off-white);
  color: var(--color-near-black);
  font-family: var(--font-sans);
  font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
  line-height: 1.55;
}

/* Page shell: single column, max-width, generous left/right gutter. */
.page {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-7) var(--space-5) var(--space-9);
}

/* Top nav: brand on left, lightweight nav links on right. */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  border-bottom: var(--border-subtle);
}

.brand {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-heading);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand:hover { color: var(--color-coral); }

.nav-links {
  display: flex;
  gap: var(--space-5);
}

.nav-links a {
  font-size: 14px;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* Typography. */
h1, h2, h3 {
  font-family: var(--font-serif);
  color: var(--color-heading);
  letter-spacing: -0.01em;
  margin: 0;
}

h1 {
  font-size: 40px;
  line-height: 1.1;
  font-weight: 600;
  margin-bottom: var(--space-4);
}

h2 {
  font-size: 22px;
  line-height: 1.25;
  font-weight: 600;
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: 17px;
  line-height: 1.3;
  font-weight: 600;
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
}

p, li {
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text);
}

p { margin: 0 0 var(--space-4) 0; }

ul, ol {
  margin: 0 0 var(--space-4) 0;
  padding-left: var(--space-5);
}

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

strong { color: var(--color-near-black); font-weight: 600; }

a {
  color: var(--color-coral);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 65, 46, 0.3);
  transition: border-color 0.15s ease;
}

a:hover { border-bottom-color: var(--color-coral); }

code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--color-surface-2);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

/* TL;DR / pull-quote box. */
.tldr {
  background: #FFFFFF;
  border: var(--border-default);
  border-left: 3px solid var(--color-coral);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-5) 0 var(--space-6);
}

.tldr strong { display: block; margin-bottom: var(--space-1); font-size: 12px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--color-coral); }
.tldr p { margin: 0; font-size: 15px; color: var(--color-text); }

/* Tables (used in PP for lawful-basis breakdown). */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0 var(--space-5);
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-bottom: var(--border-subtle);
  vertical-align: top;
}

th {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  font-weight: 600;
  background: var(--color-surface-2);
}

/* Meta line (Last updated). */
.meta {
  font-size: 13px;
  color: var(--color-muted-faint);
  margin-bottom: var(--space-6);
}

/* Footer. */
.footer {
  margin-top: var(--space-9);
  padding-top: var(--space-5);
  border-top: var(--border-subtle);
  font-size: 13px;
  color: var(--color-muted);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
}

.footer a {
  color: var(--color-muted);
  border-bottom: none;
}

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

.footer-links {
  display: flex;
  gap: var(--space-5);
}

/* Landing-specific styles. */
.hero {
  margin-bottom: var(--space-7);
}

.hero h1 {
  font-size: 48px;
  margin-bottom: var(--space-3);
}

.hero p {
  font-size: 18px;
  color: var(--color-muted);
  line-height: 1.5;
  max-width: 560px;
  margin-bottom: var(--space-5);
}

.coming-soon {
  display: inline-block;
  background: var(--color-coral-bg);
  color: var(--color-coral);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

@media (min-width: 600px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
}

.feature {
  background: #FFFFFF;
  border: var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.feature h3 {
  margin: 0 0 var(--space-2) 0;
  font-size: 16px;
}

.feature p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
  line-height: 1.55;
}

/* Mobile niceties. */
@media (max-width: 480px) {
  .page { padding: var(--space-5) var(--space-4) var(--space-7); }
  .hero h1 { font-size: 32px; }
  h1 { font-size: 30px; }
  h2 { font-size: 20px; }
  .nav-links { gap: var(--space-3); }
  .footer { flex-direction: column; align-items: flex-start; }
}