/* Seller Foundation — shared styles
   Palette: navy + burnt orange + brick red on warm off-white.
   Type: IBM Plex Sans + IBM Plex Mono.
   Tone: industrial, utilitarian, grounded. Thick rules, bold sans, no gradients. */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg: #f5f1ea;           /* warm off-white */
  --bg-2: #ebe4d7;         /* subtle secondary */
  --ink: #1a1a1a;          /* charcoal */
  --ink-2: #3d3a36;
  --ink-3: #6a665f;
  --rule: #1a1a1a;
  --rule-soft: rgba(26,26,26,0.12);
  --navy: #1f2a44;         /* dark navy — L1 */
  --navy-ink: #0e1524;
  --orange: #c2570f;       /* burnt orange — L2 */
  --orange-2: #e0701a;
  --brick: #8a2a1e;        /* brick red — L3 */
  --brick-2: #a8331f;
  --ok: #2e6b3f;
  --warn: #c2570f;
  --max: 1240px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius: 2px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--rule-soft); transition: border-color .15s, color .15s; }
a:hover { border-bottom-color: var(--ink); }

h1, h2, h3, h4 { font-family: 'IBM Plex Sans', sans-serif; font-weight: 600; letter-spacing: -0.015em; margin: 0; line-height: 1.08; }
h1 { font-size: clamp(40px, 5.5vw, 72px); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(28px, 3.4vw, 44px); letter-spacing: -0.015em; }
h3 { font-size: clamp(20px, 2vw, 26px); }
h4 { font-size: 17px; font-weight: 600; }

p { margin: 0 0 1em; color: var(--ink-2); }
p:last-child { margin-bottom: 0; }

.mono {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ——— Nav ——— */
.nav {
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 0;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.logo-mark {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}
.logo-mark span {
  display: block;
  width: 18px;
  height: 3px;
  background: var(--navy);
}
.logo-mark span:nth-child(2) { background: var(--orange); width: 22px; }
.logo-mark span:nth-child(3) { background: var(--brick); width: 26px; }

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  font-size: 15px;
}
.nav-links a { border: 0; color: var(--ink-2); font-weight: 500; }
.nav-links a:hover { color: var(--ink); }
.nav-links a.current { color: var(--ink); border-bottom: 2px solid var(--orange); padding-bottom: 2px; }
.nav-cta {
  margin-left: auto;
}

@media (max-width: 780px) {
  .nav-links { display: none; }
  .nav-links.mobile-open { display: flex; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--bg); padding: 16px var(--gutter); border-bottom: 1px solid var(--rule); }
}

/* ——— Buttons ——— */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--bg);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .1s, background .15s, color .15s;
  border-bottom: 1.5px solid var(--ink);
}
.btn:hover { background: var(--orange); border-color: var(--orange); color: #fff; border-bottom-color: var(--orange); }
.btn.primary { background: var(--orange); border-color: var(--orange); color: #fff; border-bottom-color: var(--orange); }
.btn.primary:hover { background: var(--brick); border-color: var(--brick); border-bottom-color: var(--brick); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--bg); }
.btn .arrow { transition: transform .15s; }
.btn:hover .arrow { transform: translateX(3px); }

/* Quiet secondary link — used alongside a single primary CTA */
.quiet-link {
  display: inline-flex;
  align-items: center;
  padding: 0;
  color: var(--ink-2);
  font-size: 15px;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  border-bottom: 0;
  transition: color .15s;
}
.quiet-link:hover { color: var(--orange); }

/* ——— Section scaffolding ——— */
.section {
  padding: clamp(64px, 9vw, 120px) 0;
  border-bottom: 1px solid var(--rule);
}
.section.tight { padding: clamp(48px, 6vw, 80px) 0; }
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.section-label::before {
  content: "";
  width: 32px;
  height: 2px;
  background: var(--ink);
}
.section-title {
  max-width: 880px;
  margin-bottom: 24px;
}
.section-lede {
  max-width: 720px;
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--ink-2);
}

/* ——— Pills (the reusable motif) ——— */
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1.5px solid currentColor;
  border-radius: 999px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
  line-height: 1.2;
  background: transparent;
  color: inherit;
}
.pill.solid { background: currentColor; }
.pill.solid > * { color: #fff; mix-blend-mode: normal; }

/* ——— Cards ——— */
.card {
  background: #fff;
  border: 1.5px solid var(--ink);
  padding: 28px;
  border-radius: var(--radius);
  position: relative;
  transition: transform .15s, box-shadow .15s;
}
.card.hover:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--ink); }

/* ——— Grid helpers ——— */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ——— Footer ——— */
.footer {
  background: var(--navy-ink);
  color: #c7cbd4;
  padding: 64px 0 32px;
  font-size: 14px;
}
.footer a { color: #e4e6eb; border-color: rgba(255,255,255,0.2); }
.footer a:hover { color: #fff; border-color: #fff; }
.footer h5 { color: #fff; font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; margin: 0 0 16px; font-family: 'IBM Plex Mono', monospace; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 48px; margin-bottom: 48px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-meta { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 24px; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; color: #8a8f9a; font-size: 13px; }
.footer-meta .tm { max-width: 640px; line-height: 1.6; }
.footer-company { color: #c7cbd4; font-size: 13px; line-height: 1.6; }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 17px; border: 0; margin-bottom: 16px; }
.footer-logo .logo-mark span { background: #d0d4db; }
.footer-logo .logo-mark span:nth-child(2) { background: var(--orange-2); }
.footer-logo .logo-mark span:nth-child(3) { background: var(--brick-2); }
@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

/* ——— Code blocks ——— */
.code {
  background: var(--navy-ink);
  color: #e4e6eb;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  line-height: 1.7;
  padding: 20px 24px;
  border-radius: var(--radius);
  overflow-x: auto;
  border: 1.5px solid var(--ink);
}
.code .c-key { color: #e0701a; }
.code .c-str { color: #a8b88a; }
.code .c-num { color: #c59a6a; }
.code .c-com { color: #6a706d; font-style: italic; }
.code .c-fn  { color: #c7cbd4; }

/* ——— Tag / status ——— */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid var(--rule-soft);
  border-radius: 2px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: transparent;
}
.tag.ok { color: var(--ok); border-color: var(--ok); }
.tag.ship { color: var(--orange); border-color: var(--orange); }
.tag.soon { color: var(--ink-3); }

/* ——— Form ——— */
input[type="text"], input[type="email"], input[type="password"], textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--ink);
  background: #fff;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  border-radius: var(--radius);
}
input:focus, textarea:focus { outline: 2px solid var(--orange); outline-offset: -1px; }
label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; color: var(--ink); }

/* ——— Misc ——— */
.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 16px;
}
.rule { border-top: 1px solid var(--rule-soft); margin: 48px 0; }
.kbd { font-family: 'IBM Plex Mono', monospace; font-size: 12px; padding: 2px 6px; border: 1px solid var(--rule-soft); border-radius: 3px; background: #fff; }
.two-col { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; gap: 32px; } }

/* ——— Hero-specific ——— */
.hero { padding: clamp(48px, 7vw, 88px) 0 clamp(64px, 8vw, 120px); border-bottom: 1px solid var(--rule); }
.hero-top { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: end; margin-bottom: 56px; }
@media (max-width: 900px) { .hero-top { grid-template-columns: 1fr; gap: 32px; } }
.hero h1 { margin-bottom: 24px; }
.hero-sub { font-size: clamp(17px, 1.7vw, 21px); color: var(--ink-2); max-width: 540px; margin-bottom: 32px; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

/* ——— Stack diagram ——— */
.stack {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 2px solid var(--ink);
  border-radius: 4px;
  overflow: hidden;
  background: #fff;
}
.stack-layer {
  padding: 28px 32px;
  color: #fff;
  position: relative;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  align-items: start;
  border-bottom: 2px solid var(--ink);
}
.stack-layer:last-child { border-bottom: 0; }
.stack-l1 { background: var(--navy); }
.stack-l2 { background: var(--orange); }
.stack-l3 { background: var(--brick); }
.stack-meta .mono { color: rgba(255,255,255,0.7); display: block; margin-bottom: 6px; }
.stack-meta h3 { color: #fff; font-size: 24px; letter-spacing: -0.01em; margin-bottom: 4px; }
.stack-meta .stack-sub { color: rgba(255,255,255,0.85); font-size: 13px; line-height: 1.4; }
.stack-body .stack-desc { color: rgba(255,255,255,0.9); margin-bottom: 16px; font-size: 15px; line-height: 1.55; max-width: 560px; }
.stack-body .pill-row .pill {
  color: #fff;
  border-color: rgba(255,255,255,0.55);
  background: rgba(255,255,255,0.08);
  font-size: 12px;
}
@media (max-width: 680px) {
  .stack-layer { grid-template-columns: 1fr; gap: 16px; padding: 22px; }
}

/* ——— Numbered steps ——— */
.steps { counter-reset: step; display: grid; gap: 0; }
.step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid var(--rule-soft);
  align-items: start;
}
.step:first-child { border-top: 1.5px solid var(--ink); }
.step:last-child { border-bottom: 1.5px solid var(--ink); }
.step-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  color: var(--orange);
  letter-spacing: 0.08em;
}
.step-num::before { content: "0" counter(step); }
.step h3 { margin-bottom: 8px; }
@media (max-width: 680px) { .step { grid-template-columns: 1fr; gap: 6px; padding: 24px 0; } }

/* ——— FAQ accordion ——— */
.faq { border-top: 1.5px solid var(--ink); }
.faq-item { border-bottom: 1px solid var(--rule-soft); }
.faq-q {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 22px 0;
  font-family: inherit;
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.faq-q:hover { color: var(--orange); }
.faq-q::after {
  content: "+";
  font-family: 'IBM Plex Mono', monospace;
  font-size: 22px;
  font-weight: 400;
  color: var(--ink-3);
  transition: transform .2s;
}
.faq-item.open .faq-q::after { content: "−"; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .25s ease; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-a-inner { padding: 0 0 22px; color: var(--ink-2); max-width: 720px; }

/* ——— Preview / Claude snippet mock ——— */
.claude-mock {
  background: #fff;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 14px;
}
.claude-mock-head {
  padding: 10px 16px;
  border-bottom: 1px solid var(--rule-soft);
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--ink-3);
  background: var(--bg-2);
}
.claude-mock-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.claude-mock-body { padding: 20px 24px; display: grid; gap: 16px; }
.msg { display: grid; grid-template-columns: 64px 1fr; gap: 12px; align-items: start; }
.msg-role { font-family: 'IBM Plex Mono', monospace; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); padding-top: 2px; }
.msg-content { color: var(--ink); line-height: 1.5; }
.msg-content code { font-family: 'IBM Plex Mono', monospace; font-size: 13px; background: var(--bg-2); padding: 2px 6px; border-radius: 2px; }
.preview-box {
  background: var(--bg);
  border: 1.5px solid var(--ink);
  padding: 14px 16px;
  border-radius: 2px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink);
  margin: 8px 0 12px;
}
.preview-box .label { color: var(--ink-3); }
.preview-box .delta-from { color: var(--ink-3); text-decoration: line-through; }
.preview-box .delta-to { color: var(--brick); font-weight: 600; }
.confirm-row { display: flex; gap: 8px; align-items: center; }
.confirm-btn { padding: 6px 12px; border: 1px solid var(--ink); background: var(--ink); color: #fff; font-family: 'IBM Plex Mono', monospace; font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; border-radius: 2px; cursor: pointer; }
.confirm-btn.secondary { background: transparent; color: var(--ink); }

/* ——— Page header (non-home) ——— */
.page-head { padding: clamp(64px, 8vw, 96px) 0 clamp(40px, 5vw, 64px); border-bottom: 1px solid var(--rule); }
.page-head h1 { font-size: clamp(36px, 4.5vw, 56px); max-width: 900px; margin-bottom: 16px; }
.page-head .eyebrow { color: var(--orange); }
.page-head p { font-size: clamp(17px, 1.5vw, 19px); max-width: 680px; }

/* ——— Legal pages ——— */
.legal-body { max-width: 780px; margin: 0 auto; padding: 48px 0; }
.legal-body h2 { font-size: 24px; margin: 40px 0 12px; }
.legal-body h3 { font-size: 18px; margin: 24px 0 8px; }
.legal-body ul, .legal-body ol { color: var(--ink-2); }
.legal-body p, .legal-body li { font-size: 16px; line-height: 1.65; }

/* ——— Utility ——— */
.center { text-align: center; }
.muted { color: var(--ink-3); }
.strong { color: var(--ink); font-weight: 600; }
.hr { height: 1px; background: var(--rule-soft); border: 0; margin: 32px 0; }
.hr-thick { height: 1.5px; background: var(--ink); border: 0; margin: 48px 0; }
.spacer-lg { height: 80px; }
.spacer-md { height: 48px; }

/* Density tweak support */
body.density-compact { font-size: 15px; }
body.density-compact .section { padding: clamp(48px, 6vw, 80px) 0; }
body.density-compact .hero { padding: clamp(36px, 5vw, 64px) 0 clamp(48px, 6vw, 80px); }
body.density-compact .stack-layer { padding: 20px 24px; }