/*
 * Joulie landing page stylesheet
 * Brand palette + tone ramp pulled from docs/branding/Joulie_Brand_Guide.pdf
 * No JavaScript, no web fonts, no analytics. System font stack only.
 */

:root {
  /* Joulie brand palette */
  --joulie-blue:      #0D47FF;
  --joulie-deep-blue: #0A2FB0;
  --joulie-teal:      #00C2D1;
  --joulie-green:     #A6F43C;
  --joulie-yellow:    #FFD54D;
  --joulie-ink-deep:  #0A1B5E;

  /* Light-mode neutrals */
  --bg:               #FDFCFF;
  --surface:          #FFFFFF;
  --surface-alt:      #F4F6FB;
  --on-surface:       #1A1C1E;
  --on-surface-muted: #43474E;
  --border:           #DFE2EB;
  --link:             var(--joulie-blue);

  --max-width:        1100px;
  --radius:           16px;
  --shadow:           0 1px 3px rgba(10, 27, 94, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:               #1A1C1E;
    --surface:          #2A2D31;
    --surface-alt:      #232629;
    --on-surface:       #E2E2E6;
    --on-surface-muted: #C3C7CF;
    --border:           #43474E;
    --link:             #B7C4FF;
    --shadow:           0 1px 3px rgba(0, 0, 0, 0.3);
  }
}

/* ---------- reset ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-surface);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: none; }
a:hover, a:focus { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--joulie-blue); outline-offset: 2px; border-radius: 4px; }

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

h1, h2, h3 {
  color: var(--joulie-ink-deep);
  line-height: 1.2;
  font-weight: 700;
}
@media (prefers-color-scheme: dark) {
  h1, h2, h3 { color: var(--on-surface); }
}

h2 { font-size: 1.75rem; margin: 0 0 1rem; }
h3 { font-size: 1.15rem; margin: 0 0 0.5rem; }

p { margin: 0 0 1rem; }

/* ---------- topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--on-surface);
  font-weight: 600;
}
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; }
.brand-name { font-size: 1.1rem; }

.topnav {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}
.topnav a { color: var(--on-surface); }

@media (max-width: 540px) {
  .topnav a:not(:last-child) { display: none; }
}

/* ---------- main ---------- */

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

section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
}
section.hero { border-top: none; padding: 4rem 0 3rem; }

/* ---------- hero ---------- */

.hero { text-align: center; }
.hero-logo img {
  max-width: 520px;
  width: 100%;
  margin: 0 auto;
}
.hero-lede {
  font-size: 1.2rem;
  color: var(--on-surface-muted);
  max-width: 38rem;
  margin: 1.5rem auto 2rem;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.btn-primary {
  background: var(--joulie-blue);
  color: #ffffff;
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--joulie-deep-blue);
  color: #ffffff;
  text-decoration: none;
}
.btn-secondary {
  background: transparent;
  color: var(--joulie-blue);
  border: 2px solid var(--joulie-blue);
}
.btn-secondary:hover, .btn-secondary:focus {
  background: var(--joulie-blue);
  color: #ffffff;
  text-decoration: none;
}
@media (prefers-color-scheme: dark) {
  .btn-secondary { color: var(--link); border-color: var(--link); }
  .btn-secondary:hover, .btn-secondary:focus {
    background: var(--link);
    color: #001F87;
  }
}

/* ---------- about / visuals shared grid ---------- */

.lede {
  font-size: 1.05rem;
  color: var(--on-surface-muted);
  max-width: 50rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}
@media (min-width: 720px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card ul { padding-left: 1.25rem; margin: 0; }
.card li { margin-bottom: 0.4rem; color: var(--on-surface-muted); }

/* ---------- features list ---------- */

.feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}
@media (min-width: 720px) {
  .feature-list { grid-template-columns: 1fr 1fr; }
}
.feature-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--joulie-blue);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  color: var(--on-surface-muted);
}
.feature-list li strong {
  color: var(--on-surface);
  font-weight: 600;
}

/* ---------- FAQ ---------- */

.faq dl {
  display: grid;
  gap: 1.25rem;
  margin: 1.5rem 0 0;
}
.faq dt {
  font-weight: 600;
  color: var(--joulie-ink-deep);
  margin-bottom: 0.25rem;
}
@media (prefers-color-scheme: dark) {
  .faq dt { color: var(--on-surface); }
}
.faq dd {
  margin: 0;
  color: var(--on-surface-muted);
}

/* ---------- privacy ---------- */

.privacy ul {
  padding-left: 1.25rem;
  margin: 1rem 0;
  color: var(--on-surface-muted);
}
.privacy li { margin-bottom: 0.5rem; }

/* ---------- legal pages (privacy.html, rendered from PRIVACY.md by
              .github/workflows/pages.yml at deploy time via pandoc).
              Styles target pandoc's raw <h1>/<h2>/<p>/<ul>/<table>
              output rather than wrapper classes, since the rendered
              markdown does not introduce per-section <section> elements. */

.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}
.legal h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
  color: var(--joulie-ink-deep);
}
@media (prefers-color-scheme: dark) { .legal h1 { color: var(--on-surface); } }
.legal h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.5rem;
}
.legal p {
  color: var(--on-surface-muted);
  margin: 0 0 1rem;
}
.legal hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 1.5rem 0;
}
.legal ul {
  padding-left: 1.25rem;
  margin: 0.5rem 0 1rem;
  color: var(--on-surface-muted);
}
.legal li { margin-bottom: 0.4rem; }
.legal a { color: var(--link); }
.legal code {
  background: var(--surface-alt);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.9em;
}
.legal strong { color: var(--on-surface); }

.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.75rem 0 1.25rem;
  font-size: 0.95rem;
}
.legal table th, .legal table td {
  text-align: left;
  vertical-align: top;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
.legal table th {
  font-weight: 600;
  color: var(--on-surface);
  background: var(--surface-alt);
}
.legal table td { color: var(--on-surface-muted); }

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--on-surface-muted);
  font-size: 0.9rem;
}
footer p { margin: 0.4rem 0; }