/* ─────────────────────────────────────────────────────────
   emailrelay.au — marketing
   palette: manila paper · indigo ink · postmark red
   ───────────────────────────────────────────────────────── */

:root {
  --paper:        #f5efe1;
  --paper-deep:   #ece4d2;
  --paper-edge:   #d8cfb8;
  --ink:          #1a1a2e;
  --ink-muted:    #4a4a6e;
  --ink-faint:    #8a8aaa;
  --rule:         #c9bea2;
  --signal:       #c8323c;   /* postmark red */
  --signal-deep:  #9c2530;
  --accent:       #1e6b6b;   /* aged green */
  --accent-soft:  #d8e5e0;

  --serif: "Iowan Old Style", "Charter", "Source Serif Pro", Cambria, Georgia, serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", system-ui, sans-serif;
  --mono:  "JetBrains Mono", "Fira Code", "SF Mono", ui-monospace, Menlo, monospace;

  --t-xs: 0.75rem;
  --t-sm: 0.875rem;
  --t-base: 1rem;
  --t-lg: 1.125rem;
  --t-xl: 1.5rem;
  --t-2xl: 2.25rem;
  --t-3xl: 3.5rem;
  --t-4xl: 5rem;

  --gutter: clamp(20px, 4vw, 56px);
  --radius: 0;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--t-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* hard-stop the page from scrolling horizontally if anything inside misbehaves */
html, body { overflow-x: hidden; max-width: 100%; }

/* faint envelope-grid texture so the page doesn't look flat */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(26,26,46,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(26,26,46,0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

a { color: var(--signal); text-decoration: none; border-bottom: 1px solid currentColor; transition: color .15s; }
a:hover { color: var(--signal-deep); }

h1, h2, h3 {
  font-family: var(--serif);
  letter-spacing: -0.01em;
  font-weight: 700;
  margin: 0 0 0.4em;
  color: var(--ink);
}

code, pre, kbd, .mono {
  font-family: var(--mono);
  font-size: 0.92em;
}

/* ── Top nav ────────────────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  background: rgba(245, 239, 225, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--rule);
  z-index: 50;
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: var(--t-sm);
  letter-spacing: 0.04em;
  color: var(--ink);
  border-bottom: none;
}
.brand-stamp {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--signal);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.03em;
  transform: rotate(-4deg);
  border: 1px dashed var(--paper);
  outline: 1px solid var(--signal);
}
.brand-name strong { font-weight: 800; }
.brand-name em { font-style: normal; color: var(--signal); }

.nav-links {
  display: flex; gap: 22px; align-items: center;
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.nav-links a {
  color: var(--ink-muted);
  border-bottom: none;
}
.nav-links a:hover { color: var(--signal); }
.nav-links .nav-cta {
  background: var(--ink);
  color: var(--paper);
  padding: 8px 16px;
  border-bottom: 3px solid var(--signal);
}
.nav-links .nav-cta:hover { background: var(--signal); color: var(--paper); border-color: var(--ink); }

@media (max-width: 720px) {
  .nav-links { gap: 14px; }
  .nav-links .hide-on-mobile { display: none; }
}

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

.hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(48px, 9vw, 120px) var(--gutter) clamp(40px, 7vw, 80px);
  position: relative;
}

.hero-marker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 28px;
}
.hero-marker::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--signal);
}

.hero-title {
  font-size: clamp(2.6rem, 6vw, var(--t-4xl));
  line-height: 1.04;
  letter-spacing: -0.025em;
  margin: 0 0 18px;
  max-width: 22ch;
}
.hero-title em {
  font-style: italic;
  color: var(--signal);
}
.hero-title .underline {
  position: relative;
  display: inline-block;
}
.hero-title .underline::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 6px;
  background: var(--signal);
  opacity: 0.18;
  transform: skewY(-1deg);
}

.hero-sub {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--ink-muted);
  max-width: 60ch;
  margin: 0 0 36px;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: var(--t-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 14px 22px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s;
  border-bottom: 1px solid var(--ink);
}
.btn:hover {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--paper);
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--ink);
}
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
.btn-secondary:hover {
  background: var(--ink);
  color: var(--paper);
}

.hero-postmark {
  position: absolute;
  top: 4%;
  right: -2%;
  width: clamp(220px, 28vw, 380px);
  pointer-events: none;
  opacity: 0.07;
  transform: rotate(-12deg);
}
.hero-postmark svg { width: 100%; height: 100%; }

/* ── Numbered sections ──────────────────────────── */

.section {
  border-top: 1px solid var(--rule);
  padding: clamp(48px, 7vw, 96px) 0;
}
.section-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 18px;
}
.section-tag .num {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--ink);
  font-weight: 700;
  color: var(--ink);
  background: var(--paper-deep);
}
.section-title {
  font-size: clamp(1.85rem, 3.4vw, var(--t-2xl));
  margin: 0 0 12px;
  max-width: 22ch;
}
.section-lede {
  font-size: 1.1rem;
  color: var(--ink-muted);
  max-width: 70ch;
  margin: 0 0 36px;
  line-height: 1.5;
}

/* ── Feature trio ───────────────────────────────── */

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--rule);
  background: var(--paper-deep);
}
.feature {
  padding: 28px;
  border-right: 1px solid var(--rule);
  background: var(--paper);
}
.feature:last-child { border-right: none; }
.feature h3 {
  font-family: var(--sans);
  font-size: var(--t-lg);
  font-weight: 700;
  margin: 14px 0 8px;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.feature p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}
.feature-icon {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--ink);
  color: var(--signal);
}

@media (max-width: 760px) {
  .features { grid-template-columns: 1fr; }
  .feature { border-right: none; border-bottom: 1px solid var(--rule); }
  .feature:last-child { border-bottom: none; }
}

/* ── How it works ───────────────────────────────── */

.steps { counter-reset: step; }
.step {
  display: grid;
  /* minmax(0, 1fr) lets the right column shrink below content size — without
     this a long <pre> line forces the column wide and triggers page-level
     horizontal scroll. The <pre> inside scrolls itself instead. */
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
}
.step:last-child { border-bottom: none; }
.step-num {
  font-family: var(--mono);
  font-size: var(--t-xl);
  font-weight: 700;
  color: var(--signal);
  line-height: 1;
}
.step h3 {
  font-family: var(--sans);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--ink);
}
.step p {
  margin: 0;
  color: var(--ink-muted);
  max-width: 70ch;
}
.step pre, .step code {
  background: var(--ink);
  color: var(--paper);
  padding: 12px 16px;
  display: block;
  margin-top: 12px;
  overflow-x: auto;
  font-size: 0.85rem;
  border-left: 3px solid var(--signal);
}

/* ── Pricing ───────────────────────────────────── */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--ink);
}
.pack {
  padding: 28px 22px;
  background: var(--paper);
  border-right: 1px solid var(--rule);
  position: relative;
  display: flex;
  flex-direction: column;
}
.pack:last-child { border-right: none; }
.pack--featured {
  background: var(--ink);
  color: var(--paper);
}
.pack--featured h3,
.pack--featured .pack-name { color: var(--paper); }
.pack--featured .pack-tagline,
.pack--featured .pack-per { color: var(--paper-edge); }
.pack-badge {
  position: absolute;
  top: -10px; left: 18px;
  background: var(--signal);
  color: var(--paper);
  padding: 3px 10px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.pack-name {
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 6px;
}
.pack-tagline {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-bottom: 22px;
  min-height: 2.4em;
}
.pack-price {
  font-family: var(--serif);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}
.pack-price-suffix {
  font-size: 0.7em;
  color: var(--ink-muted);
  font-weight: 400;
}
.pack--featured .pack-price-suffix { color: var(--paper-edge); }
.pack-credits {
  font-family: var(--mono);
  font-size: var(--t-base);
  font-weight: 600;
  margin-bottom: 4px;
}
.pack-credits-unit { color: var(--ink-muted); font-weight: 400; }
.pack--featured .pack-credits-unit { color: var(--paper-edge); }
.pack-per {
  font-family: var(--mono);
  font-size: var(--t-xs);
  color: var(--ink-muted);
  margin-bottom: 24px;
}
.pack-cta {
  margin-top: auto;
  display: inline-block;
  text-align: center;
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 10px 14px;
  border: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  color: var(--ink);
  background: transparent;
  text-decoration: none;
}
.pack--featured .pack-cta { color: var(--paper); border-color: var(--paper); }
.pack-cta:hover {
  background: var(--signal);
  color: var(--paper);
  border-color: var(--signal);
}

@media (max-width: 920px) {
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .pack:nth-child(1), .pack:nth-child(2) { border-bottom: 1px solid var(--rule); }
  .pack:nth-child(2) { border-right: none; }
}
@media (max-width: 540px) {
  .pricing-grid { grid-template-columns: 1fr; border: 1px solid var(--ink); }
  .pack { border-right: none; border-bottom: 1px solid var(--rule); }
  .pack:last-child { border-bottom: none; }
}

.pricing-fineprint {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: var(--t-xs);
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

/* ── Code sample ──────────────────────────────── */

.codeblock {
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.6;
  margin-top: 16px;
  max-width: 100%;
  overflow: hidden; /* clip the tab corner; <pre> handles its own scroll */
}
.codeblock-tab {
  background: var(--signal);
  color: var(--paper);
  padding: 6px 14px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  display: inline-block;
}
.codeblock pre {
  margin: 0;
  padding: 18px 20px;
  overflow-x: auto;
}
.codeblock .tok-key { color: #f5b041; }
.codeblock .tok-str { color: #82e0aa; }
.codeblock .tok-cmt { color: #95a5a6; }
.codeblock .tok-flag { color: #5dade2; }

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

.faq-list { display: grid; gap: 0; }
.faq {
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
}
.faq:last-child { border-bottom: none; }
.faq summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1.3rem;
  color: var(--signal);
  font-weight: 400;
}
.faq[open] summary::after { content: "−"; }
.faq p {
  margin: 12px 0 0;
  color: var(--ink-muted);
  max-width: 70ch;
}

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

.footer {
  border-top: 1px solid var(--rule);
  padding: 56px var(--gutter) 32px;
  margin-top: 56px;
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
@media (max-width: 760px) {
  .footer-inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
@media (max-width: 460px) {
  .footer-inner { grid-template-columns: 1fr; gap: 20px; }
}
.footer-block { display: flex; flex-direction: column; gap: 6px; }
.footer-block strong {
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 6px;
}
.footer-block a {
  color: var(--ink);
  border-bottom: none;
  font-size: 0.95rem;
}
.footer-block a:hover { color: var(--signal); }
.footer-meta {
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  margin-top: 32px;
  border-top: 1px solid var(--rule);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Legal pages (terms / privacy / aup) ────────── */

.doc {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(40px, 7vw, 80px) var(--gutter);
}
.doc h1 {
  font-size: clamp(2rem, 4vw, var(--t-2xl));
  margin-bottom: 6px;
}
.doc .doc-meta {
  font-family: var(--mono);
  font-size: var(--t-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 32px;
}
.doc h2 {
  font-size: 1.4rem;
  margin: 36px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}
.doc p, .doc li {
  color: var(--ink-muted);
  line-height: 1.7;
  font-size: 1rem;
}
.doc a { color: var(--signal); border-bottom-width: 1px; }
.doc ul { padding-left: 22px; }
.doc code {
  background: var(--paper-deep);
  padding: 2px 6px;
  font-size: 0.9em;
}