/* ==========================================================================
   St Loutions LLC — Design System
   Concept: "Drafting table for software" — technical/blueprint aesthetic,
   brass accent on graphite/paper neutrals, monospace display type.
   ========================================================================== */

:root {
  --bg: #EDEEE8;
  --bg-raised: #F6F6F1;
  --ink: #15181D;
  --ink-secondary: #565B62;
  --ink-tertiary: #8A8E93;
  --line: #D3D2C7;
  --line-strong: #B7B6AA;
  --accent: #B9822F;
  --accent-strong: #9C6C24;
  --accent-ink: #15181D;
  --accent-soft: rgba(185, 130, 47, 0.12);
  --danger: #B3432F;
  --shadow: 0 1px 2px rgba(21,24,29,0.04), 0 12px 28px -14px rgba(21,24,29,0.18);
  --radius: 3px;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", "JetBrains Mono", "Roboto Mono", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --frame: 18px;
  --nav-h: 68px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171B;
    --bg-raised: #1B1F24;
    --ink: #ECE9E1;
    --ink-secondary: #A6ABB2;
    --ink-tertiary: #6E747B;
    --line: #2B2F35;
    --line-strong: #3B4048;
    --accent: #D89B4A;
    --accent-strong: #E8B06A;
    --accent-ink: #14171B;
    --accent-soft: rgba(216, 155, 74, 0.14);
    --danger: #E08A73;
    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 20px 40px -20px rgba(0,0,0,0.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #14171B; --bg-raised: #1B1F24; --ink: #ECE9E1; --ink-secondary: #A6ABB2;
  --ink-tertiary: #6E747B; --line: #2B2F35; --line-strong: #3B4048;
  --accent: #D89B4A; --accent-strong: #E8B06A; --accent-ink: #14171B;
  --accent-soft: rgba(216, 155, 74, 0.14); --danger: #E08A73; color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #EDEEE8; --bg-raised: #F6F6F1; --ink: #15181D; --ink-secondary: #565B62;
  --ink-tertiary: #8A8E93; --line: #D3D2C7; --line-strong: #B7B6AA;
  --accent: #B9822F; --accent-strong: #9C6C24; --accent-ink: #15181D;
  --accent-soft: rgba(185, 130, 47, 0.12); --danger: #B3432F; color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: var(--accent-soft); color: var(--ink); }
a { color: inherit; }
button { font-family: inherit; }
h1, h2, h3 { text-wrap: balance; margin: 0; font-family: var(--mono); font-weight: 600; letter-spacing: -0.02em; }
p { margin: 0; }
img, svg { display: block; max-width: 100%; }
main { display: block; }

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- drafting frame (decorative) ---------- */
.frame { position: fixed; inset: 0; pointer-events: none; z-index: 5; }
.frame::before { content: ""; position: absolute; inset: var(--frame); border: 1px solid var(--line); }
.tick { position: absolute; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: var(--ink-tertiary); }
.tick--tl { top: 6px; left: calc(var(--frame) + 6px); }
.tick--tr { top: 6px; right: calc(var(--frame) + 6px); }
.tick--bl { bottom: 6px; left: calc(var(--frame) + 6px); }
.tick--br { bottom: 6px; right: calc(var(--frame) + 6px); }
@media (max-width: 720px) { .frame { display: none; } }

.shell { max-width: 1180px; margin: 0 auto; padding: 0 max(24px, var(--frame) + 24px); }
.shell--narrow { max-width: 760px; }

.grid-tex {
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(0deg, var(--line) 0, var(--line) 1px, transparent 1px, transparent 64px),
    repeating-linear-gradient(90deg, var(--line) 0, var(--line) 1px, transparent 1px, transparent 64px);
  opacity: 0.35;
  mask-image: linear-gradient(180deg, black, transparent 92%);
}

/* ---------- nav ---------- */
header.nav {
  position: sticky; top: 0; z-index: 30;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px max(24px, var(--frame) + 24px);
  max-width: 1180px; margin: 0 auto;
  min-height: var(--nav-h);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { width: 30px; height: 30px; flex: none; color: var(--ink); }
.brand-word { font-family: var(--mono); font-weight: 600; font-size: 14px; letter-spacing: 0.06em; text-transform: uppercase; }
.brand-word small { display: block; font-weight: 400; font-size: 9px; color: var(--ink-tertiary); letter-spacing: 0.14em; margin-top: 1px; }

nav.links { display: flex; gap: 28px; align-items: center; }
nav.links a {
  text-decoration: none; font-size: 14px; color: var(--ink-secondary);
  position: relative; padding: 4px 2px; transition: color 200ms ease;
}
nav.links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--accent); transition: right 220ms cubic-bezier(.2,.7,.2,1);
}
nav.links a:hover { color: var(--ink); }
nav.links a:hover::after { right: 0; }
nav.links a[aria-current="page"] { color: var(--ink); }
nav.links a[aria-current="page"]::after { right: 0; background: var(--ink-tertiary); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--mono); font-size: 12.5px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 11px 18px; border-radius: var(--radius); text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-strong); box-shadow: var(--shadow); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.menu-toggle {
  display: none; width: 38px; height: 38px; align-items: center; justify-content: center;
  border: 1px solid var(--line-strong); border-radius: var(--radius); background: none; cursor: pointer; color: var(--ink);
}
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }

@media (max-width: 760px) {
  nav.links {
    display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
    position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0;
    background: var(--bg); border-top: 1px solid var(--line);
    padding: 20px max(24px, var(--frame) + 24px);
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity 220ms ease, transform 220ms ease;
  }
  nav.links a { width: 100%; padding: 14px 2px; font-size: 17px; border-bottom: 1px solid var(--line); }
  nav.links.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-cta { display: none; }
  .menu-toggle { display: inline-flex; }
}

/* ---------- sheet / section labels ---------- */
.sheet-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-tertiary); display: flex; align-items: center; gap: 10px; margin-bottom: 18px;
}
.sheet-label::before { content: ""; width: 22px; height: 1px; background: var(--line-strong); }
.sheet-label b { color: var(--accent); font-weight: 600; }

section { position: relative; padding: 96px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }
@media (max-width: 720px) { section { padding: 64px 0; } }

.page-header { padding: 56px 0 72px; }
@media (max-width: 720px) { .page-header { padding: 40px 0 48px; } }
.page-header .sheet-label { margin-bottom: 22px; }
.page-header h1 { font-size: clamp(30px, 5vw, 52px); max-width: 18ch; line-height: 1.06; }
.page-header .lede { font-size: clamp(16px, 1.6vw, 19px); color: var(--ink-secondary); max-width: 56ch; margin-top: 22px; font-family: var(--sans); }

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 640ms cubic-bezier(.2,.7,.2,1), transform 640ms cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-group.is-visible .reveal-child { opacity: 1; transform: translateY(0); }
.reveal-child { opacity: 0; transform: translateY(16px); transition: opacity 560ms cubic-bezier(.2,.7,.2,1), transform 560ms cubic-bezier(.2,.7,.2,1); }

/* ---------- section heads ---------- */
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 44px; flex-wrap: wrap; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); }
.section-head p { max-width: 42ch; color: var(--ink-secondary); font-size: 15px; }

/* ---------- hero (home) ---------- */
.hero { padding-top: 76px; overflow: hidden; }
.hero-inner { position: relative; z-index: 1; }
.hero h1 { font-size: clamp(34px, 5.6vw, 68px); line-height: 1.04; max-width: 15ch; }
.hero h1 .accent { color: var(--accent); }
.hero-sub { font-size: clamp(16px, 1.6vw, 19px); color: var(--ink-secondary); max-width: 46ch; margin-top: 24px; font-family: var(--sans); }
.hero-cta { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }

.titleblock { margin-top: 72px; border-top: 1px solid var(--line); padding-top: 20px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.titleblock div { font-family: var(--mono); }
.titleblock dt { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-tertiary); margin: 0 0 6px; }
.titleblock dd { font-size: 13.5px; margin: 0; color: var(--ink); }
@media (max-width: 700px) { .titleblock { grid-template-columns: repeat(2, 1fr); } }

/* ---------- capability / service cards ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cap-card { background: var(--bg); padding: 32px; transition: background 220ms ease; }
.cap-card:hover { background: var(--bg-raised); }
.cap-index { font-family: var(--mono); font-size: 12px; color: var(--accent); font-variant-numeric: tabular-nums; }
.cap-card h3 { font-size: 19px; margin-top: 14px; font-weight: 600; }
.cap-card p { margin-top: 10px; color: var(--ink-secondary); font-size: 14.5px; max-width: 46ch; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.03em; color: var(--ink-secondary);
  border: 1px solid var(--line-strong); border-radius: 999px; padding: 4px 10px;
}
@media (max-width: 700px) { .cap-grid { grid-template-columns: 1fr; } }

/* ---------- services page: detail cards ---------- */
.service-detail { display: grid; grid-template-columns: 220px 1fr; gap: 40px; padding: 40px 0; border-top: 1px solid var(--line); }
.service-detail:first-of-type { border-top: none; padding-top: 0; }
.service-detail-head { }
.service-detail-head .cap-index { display: block; margin-bottom: 10px; }
.service-detail-head h3 { font-size: 21px; }
.service-detail-body p { color: var(--ink-secondary); font-size: 15.5px; max-width: 60ch; }
.service-detail-body ul { margin: 18px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; }
.service-detail-body li { font-size: 14px; color: var(--ink); padding-left: 18px; position: relative; }
.service-detail-body li::before { content: ""; position: absolute; left: 0; top: 8px; width: 8px; height: 1px; background: var(--accent); }
@media (max-width: 760px) { .service-detail { grid-template-columns: 1fr; gap: 14px; } .service-detail-body ul { grid-template-columns: 1fr; } }

/* ---------- engagement models ---------- */
.engage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.engage-card { background: var(--bg); padding: 28px; }
.engage-card h3 { font-size: 16px; }
.engage-card .price { font-family: var(--mono); font-size: 13px; color: var(--accent); margin-top: 8px; display: block; }
.engage-card p { font-size: 14px; color: var(--ink-secondary); margin-top: 12px; }
@media (max-width: 820px) { .engage-grid { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 22px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  font-size: 16px; font-weight: 500;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .plus { font-family: var(--mono); color: var(--accent); font-size: 18px; flex: none; transition: transform 220ms ease; }
.faq-item[open] summary .plus { transform: rotate(45deg); }
.faq-item p { padding: 0 0 22px; color: var(--ink-secondary); font-size: 14.5px; max-width: 62ch; }

/* ---------- process ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.process-step { border-top: 2px solid var(--line-strong); padding-top: 18px; transition: border-color 220ms ease; }
.process-step:hover { border-color: var(--accent); }
.process-num { font-family: var(--mono); font-size: 12px; color: var(--ink-tertiary); font-variant-numeric: tabular-nums; }
.process-step h3 { font-size: 17px; margin-top: 10px; }
.process-step p { font-size: 14px; color: var(--ink-secondary); margin-top: 8px; }
@media (max-width: 820px) { .process { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .process { grid-template-columns: 1fr; } }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: start; }
.about-copy p { color: var(--ink-secondary); font-size: 16px; margin-top: 16px; max-width: 52ch; }
.about-copy p:first-of-type { margin-top: 0; }
.stat-list { display: flex; flex-direction: column; gap: 22px; border-left: 1px solid var(--line); padding-left: 28px; }
.stat-list div dt { font-family: var(--mono); font-size: 28px; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat-list div dd { margin: 4px 0 0; font-size: 13px; color: var(--ink-secondary); }
@media (max-width: 820px) { .about-grid { grid-template-columns: 1fr; gap: 36px; } .stat-list { flex-direction: row; flex-wrap: wrap; border-left: none; border-top: 1px solid var(--line); padding-left: 0; padding-top: 24px; } }

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 56px; }
.value-card { background: var(--bg); padding: 26px; }
.value-card h3 { font-size: 15.5px; }
.value-card p { font-size: 13.5px; color: var(--ink-secondary); margin-top: 8px; }
@media (max-width: 700px) { .values-grid { grid-template-columns: 1fr; } }

/* ---------- work page ---------- */
.work-item { padding: 44px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; }
.work-item:first-of-type { border-top: none; padding-top: 0; }
.work-item-meta .cap-index { display: block; }
.work-item-meta h3 { font-size: 24px; margin-top: 12px; }
.work-item-meta .status { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-secondary); }
.work-item-meta .status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.work-item-body p { color: var(--ink-secondary); font-size: 15px; }
.work-item-body .tag-row { margin-top: 20px; }
@media (max-width: 780px) { .work-item { grid-template-columns: 1fr; gap: 16px; } }

.work-note {
  margin-top: 56px; border: 1px dashed var(--line-strong); border-radius: var(--radius);
  padding: 22px 26px; display: flex; gap: 16px; align-items: flex-start;
}
.work-note svg { flex: none; margin-top: 2px; color: var(--accent); }
.work-note p { font-size: 14px; color: var(--ink-secondary); }
.work-note strong { color: var(--ink); font-weight: 600; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.field label { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-secondary); }
.field .req { color: var(--accent); }
.field input, .field select, .field textarea {
  font-family: var(--sans); font-size: 15px; padding: 12px 14px; border-radius: var(--radius);
  border: 1px solid var(--line-strong); background: var(--bg-raised); color: var(--ink); width: 100%;
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.field-hint { font-size: 12px; color: var(--ink-tertiary); }
.field-error { font-size: 12px; color: var(--danger); display: none; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--danger); }
.field.has-error .field-error { display: block; }
.form-note { margin-top: 4px; font-size: 13px; color: var(--ink-secondary); }
.form-status { margin-top: 16px; font-size: 13.5px; font-family: var(--mono); display: none; }
.form-status.is-visible { display: block; }

.contact-info dt { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-tertiary); }
.contact-info dd { margin: 4px 0 22px; font-size: 15px; }
.contact-info a { text-decoration: none; border-bottom: 1px solid var(--line-strong); transition: border-color 200ms ease, color 200ms ease; }
.contact-info a:hover { border-color: var(--accent); color: var(--accent); }
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }

.cta-band { text-align: left; }
.cta-band-inner { display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; }
.cta-band h2 { font-size: clamp(24px, 3.4vw, 38px); max-width: 20ch; }

/* ---------- article / prose (privacy policy) ---------- */
.article { max-width: 720px; }
.article h2 { font-size: 20px; margin-top: 44px; margin-bottom: 14px; }
.article h2:first-child { margin-top: 0; }
.article p, .article li { font-family: var(--sans); font-size: 15.5px; color: var(--ink-secondary); margin-top: 12px; }
.article ul, .article ol { padding-left: 20px; margin-top: 12px; }
.article strong { color: var(--ink); font-weight: 600; }
.article a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.updated-note { font-family: var(--mono); font-size: 12px; color: var(--ink-tertiary); margin-bottom: 8px; }

.badge-note {
  margin-top: 14px; font-family: var(--mono); font-size: 11px; color: var(--ink-tertiary);
  border: 1px dashed var(--line-strong); padding: 10px 14px; border-radius: var(--radius); display: inline-block;
}

/* ---------- footer ---------- */
footer { padding: 40px 0 64px; }
.footer-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding-bottom: 32px; margin-bottom: 24px; border-bottom: 1px solid var(--line); }
.footer-nav { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-nav a { text-decoration: none; font-size: 13.5px; color: var(--ink-secondary); transition: color 200ms ease; }
.footer-nav a:hover { color: var(--accent); }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; font-family: var(--mono); font-size: 11.5px; color: var(--ink-tertiary); letter-spacing: 0.03em; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-child, .btn, nav.links a::after, .cap-card, .process-step, .contact-info a, nav.links { transition: none !important; }
  .reveal, .reveal-child { opacity: 1 !important; transform: none !important; }
}