/* ============================================================
   Email Designer Pro — shared site styles (content pages)
   Same design tokens as the landing page, plus prose + FAQ.
   ============================================================ */
:root {
  --blue:        #2f6bed;
  --blue-ink:    #1d51c9;
  --blue-soft:   rgba(47,107,237,.10);
  --violet:      #7c46ff;
  --violet-soft: rgba(124,70,255,.12);

  --ink:       #0c1222;
  --bg:        #ffffff;
  --bg-alt:    #f5f8fd;
  --surface:   #ffffff;
  --surface-2: #eef3fb;
  --text:      #101a2e;
  --text-soft: #4a5670;
  --text-faint:#77839c;
  --border:    #e4e9f3;
  --border-2:  #d3dcec;
  --code-bg:   #eef2fc;
  --code-ink:  #274690;

  --shadow-sm: 0 1px 2px rgba(12,18,34,.05), 0 4px 14px -8px rgba(12,18,34,.12);
  --radius: 14px;
  --maxw: 1120px;
  --readw: 760px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --blue:#6f9bff; --blue-ink:#9cbaff; --blue-soft:rgba(111,155,255,.14);
    --violet:#b18aff; --violet-soft:rgba(177,138,255,.16);
    --bg:#070c17; --bg-alt:#0c1424; --surface:#0f1828; --surface-2:#16223a;
    --text:#e9eef8; --text-soft:#aab6cf; --text-faint:#7d89a3;
    --border:#1e2b45; --border-2:#293a5c; --code-bg:#16223a; --code-ink:#a8c2ff;
    --shadow-sm:0 1px 2px rgba(0,0,0,.4), 0 6px 18px -10px rgba(0,0,0,.6);
  }
}
:root[data-theme="light"] {
  --blue:#2f6bed; --blue-ink:#1d51c9; --blue-soft:rgba(47,107,237,.10);
  --violet:#7c46ff; --violet-soft:rgba(124,70,255,.12);
  --bg:#ffffff; --bg-alt:#f5f8fd; --surface:#ffffff; --surface-2:#eef3fb;
  --text:#101a2e; --text-soft:#4a5670; --text-faint:#77839c;
  --border:#e4e9f3; --border-2:#d3dcec; --code-bg:#eef2fc; --code-ink:#274690;
  --shadow-sm:0 1px 2px rgba(12,18,34,.05), 0 4px 14px -8px rgba(12,18,34,.12);
}
:root[data-theme="dark"] {
  --blue:#6f9bff; --blue-ink:#9cbaff; --blue-soft:rgba(111,155,255,.14);
  --violet:#b18aff; --violet-soft:rgba(177,138,255,.16);
  --bg:#070c17; --bg-alt:#0c1424; --surface:#0f1828; --surface-2:#16223a;
  --text:#e9eef8; --text-soft:#aab6cf; --text-faint:#7d89a3;
  --border:#1e2b45; --border-2:#293a5c; --code-bg:#16223a; --code-ink:#a8c2ff;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4), 0 6px 18px -10px rgba(0,0,0,.6);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition-duration: .001ms !important; } }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: 17px; line-height: 1.65;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: var(--blue-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; display: block; }
::selection { background: var(--blue); color: #fff; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.eyebrow { font-family: var(--mono); font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-ink); font-weight: 600; }
.mono { font-family: var(--mono); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 15.5px; line-height: 1; padding: 13px 20px; border-radius: 10px; cursor: pointer; border: 1px solid transparent; transition: transform .12s, box-shadow .12s, background .12s; white-space: nowrap; }
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 8px 20px -8px var(--blue); }
.btn-primary:hover { transform: translateY(-1px); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-2); }
.btn-ghost:hover { background: var(--surface-2); text-decoration: none; }

/* nav */
header.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: saturate(1.5) blur(12px); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; gap: 20px; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: -.02em; font-size: 17px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; background: var(--blue); display: grid; place-items: center; flex-shrink: 0; box-shadow: 0 5px 14px -5px var(--blue); }
.brand-mark svg { width: 18px; height: 18px; }
.nav-links { display: flex; gap: 4px; margin-left: 18px; }
.nav-links a { padding: 8px 12px; border-radius: 8px; font-size: 14.5px; font-weight: 500; color: var(--text-soft); }
.nav-links a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.icon-btn { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 9px; border: 1px solid var(--border); background: var(--surface); color: var(--text-soft); cursor: pointer; }
.icon-btn:hover { color: var(--text); border-color: var(--border-2); }
.icon-btn .moon { display: none; }
:root[data-theme="dark"] .icon-btn .moon { display: block; }
:root[data-theme="dark"] .icon-btn .sun { display: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .icon-btn .moon { display: block; } :root:not([data-theme="light"]) .icon-btn .sun { display: none; } }
@media (max-width: 860px) { .nav-links { display: none; } .nav-cta.hide-sm { display: none; } }

/* document page header */
.doc-head { padding: 54px 0 30px; border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.doc-head .wrap { max-width: var(--readw); }
.doc-head h1 { font-size: clamp(30px, 5vw, 44px); font-weight: 800; letter-spacing: -.025em; line-height: 1.08; margin: 12px 0 0; text-wrap: balance; }
.doc-head .sub { margin-top: 14px; color: var(--text-soft); font-size: 18px; }
.doc-head .updated { margin-top: 16px; font-size: 13px; color: var(--text-faint); font-family: var(--mono); }

/* review banner (remove before launch) */
.review { max-width: var(--readw); margin: 24px auto 0; padding: 0 24px; }
.review-inner { background: var(--violet-soft); border: 1px solid color-mix(in srgb, var(--violet) 30%, transparent); border-radius: 12px; padding: 14px 16px; font-size: 14px; color: var(--text); display: flex; gap: 11px; }
.review-inner svg { width: 18px; height: 18px; color: var(--violet); flex-shrink: 0; margin-top: 1px; }
.review-inner b { color: var(--violet); }

/* prose */
.prose { max-width: var(--readw); margin: 0 auto; padding: 44px 24px 90px; }
.prose h2 { font-size: 23px; font-weight: 750; letter-spacing: -.015em; margin: 40px 0 0; scroll-margin-top: 84px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 18px; font-weight: 680; margin: 26px 0 0; }
.prose p { margin: 14px 0 0; color: var(--text-soft); }
.prose ul, .prose ol { margin: 14px 0 0; padding-left: 22px; color: var(--text-soft); }
.prose li { margin: 7px 0; }
.prose li::marker { color: var(--text-faint); }
.prose strong { color: var(--text); font-weight: 650; }
.prose a { font-weight: 500; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 34px 0; }
.prose code { font-family: var(--mono); font-size: .86em; background: var(--code-bg); color: var(--code-ink); padding: 2px 6px; border-radius: 6px; }
.prose .lead { font-size: 18px; color: var(--text-soft); }
.prose .small { font-size: 13.5px; color: var(--text-faint); }

/* table of contents */
.toc { margin: 30px 0 0; padding: 18px 20px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; }
.toc h4 { margin: 0 0 10px; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-faint); }
.toc ol { margin: 0; padding-left: 20px; columns: 2; column-gap: 28px; }
.toc li { margin: 5px 0; break-inside: avoid; }
.toc a { color: var(--text-soft); font-size: 14.5px; font-weight: 500; }
@media (max-width: 560px) { .toc ol { columns: 1; } }

/* FAQ page */
.faq-hero { padding: 54px 0 0; }
.faq-hero .wrap { max-width: var(--readw); }
.faq-search { max-width: var(--readw); margin: 26px auto 0; padding: 0 24px; position: relative; }
.faq-search svg { position: absolute; left: 38px; top: 50%; transform: translateY(-50%); width: 17px; height: 17px; color: var(--text-faint); pointer-events: none; }
.faq-search input { width: 100%; height: 46px; padding: 0 16px 0 40px; background: var(--surface); color: var(--text); border: 1px solid var(--border-2); border-radius: 11px; font-size: 15.5px; font-family: var(--font); }
.faq-search input:focus { outline: 2px solid var(--blue); outline-offset: 1px; border-color: transparent; }
.faq-wrap { max-width: var(--readw); margin: 0 auto; padding: 30px 24px 90px; }
.faq-cat { margin-top: 40px; }
.faq-cat:first-child { margin-top: 8px; }
.faq-cat > h2 { font-size: 15px; text-transform: uppercase; letter-spacing: .08em; color: var(--blue-ink); font-family: var(--mono); font-weight: 600; margin: 0 0 12px; }
details.q { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; margin-bottom: 10px; }
details.q summary { cursor: pointer; list-style: none; padding: 17px 20px; font-weight: 600; font-size: 16.5px; display: flex; justify-content: space-between; align-items: center; gap: 16px; color: var(--text); }
details.q summary::-webkit-details-marker { display: none; }
details.q summary::after { content: "+"; font-family: var(--mono); color: var(--text-faint); font-size: 20px; flex-shrink: 0; }
details.q[open] summary::after { content: "\2013"; }
details.q summary:hover { color: var(--blue-ink); }
details.q .a { padding: 0 20px 18px; color: var(--text-soft); font-size: 15.5px; line-height: 1.65; }
details.q .a p { margin: 0 0 10px; }
details.q .a p:last-child { margin-bottom: 0; }
details.q .a code, details.q .a .tag { font-family: var(--mono); font-size: .86em; background: var(--violet-soft); color: var(--violet); padding: 2px 6px; border-radius: 6px; }
.faq-none { display: none; text-align: center; padding: 40px 0; color: var(--text-faint); }
body.searching .faq-cat:not(.match) { display: none; }
body.searching details.q:not(.match) { display: none; }
body.searching .faq-none.show { display: block; }

/* footer */
footer.site { border-top: 1px solid var(--border); padding: 54px 0 40px; background: var(--bg-alt); }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; }
.foot-grid h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin: 0 0 14px; }
.foot-grid a { display: block; padding: 5px 0; color: var(--text-soft); font-size: 14.5px; }
.foot-grid a:hover { color: var(--blue-ink); }
.foot-brand p { color: var(--text-soft); font-size: 14.5px; margin-top: 14px; max-width: 30ch; }
.foot-bottom { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13.5px; color: var(--text-faint); }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 460px) { .foot-grid { grid-template-columns: 1fr; } }