/* ==========================================================================
   NORTHSAGA — SITE STYLES
   Order: reset → base type → layout → header/menu → sections → footer → motion
   ========================================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* ---------- Base ---------- */
body {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--brass); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

/* ---------- Reusable type roles ---------- */
.display {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.005em;
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--brass);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.eyebrow::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--hairline);
}

.lede {
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--bone-dim);
  max-width: 46ch;
}

.prose { max-width: var(--measure); }
.prose p + p { margin-top: var(--space-2); }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.band { padding-block: var(--space-6); }
.band--tall { padding-block: var(--space-7); }

.band--paper {
  background: var(--paper);
  color: var(--paper-ink);
}
.band--paper .eyebrow { color: var(--brass-soft); }
.band--paper .eyebrow::after { background: var(--hairline-light); }
.band--paper .lede { color: rgba(18, 32, 43, 0.68); }

.rule {
  height: 1px;
  background: var(--hairline);
  border: 0;
}

/* ==========================================================================
   HEADER + FULL-SCREEN MENU
   ========================================================================== */
/* Must sit ABOVE .menu (z-index 70). The header is a stacking context, so
   .menu-toggle's z-index is scoped to it — at z-index 60 the overlay covered
   the toggle and the cross could not be clicked, leaving Escape as the only
   way to close the menu. */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--gutter);
  mix-blend-mode: normal;
  transition: background var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease);
}
.site-header[data-scrolled="true"] {
  background: rgba(14, 26, 36, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
}

/* With the header above the overlay, its scrolled bar would otherwise draw
   across the open menu. The mark and the cross still float over the panel. */
body[data-menu="open"] .site-header[data-scrolled="true"] {
  background: transparent;
  backdrop-filter: none;
  border-bottom-color: transparent;
}

.header-mark {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
}
.header-mark svg { width: 22px; height: auto; }
.header-mark span {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: var(--tracking-wordmark);
}

/* Hamburger — two rules that rotate into a cross. Mylands-style restraint. */
.menu-toggle {
  position: relative;
  z-index: 80;
  width: 46px;
  height: 22px;
  display: grid;
  align-content: center;
  gap: 7px;
  justify-items: end;
}
.menu-toggle i {
  display: block;
  height: 1px;
  background: var(--bone);
  transition: transform var(--dur-slow) var(--ease),
              width var(--dur-slow) var(--ease),
              opacity var(--dur-fast) var(--ease);
}
.menu-toggle i:nth-child(1) { width: 46px; }
.menu-toggle i:nth-child(2) { width: 30px; }
.menu-toggle:hover i:nth-child(2) { width: 46px; }

body[data-menu="open"] .menu-toggle i:nth-child(1) {
  width: 40px;
  transform: translateY(4px) rotate(45deg);
}
body[data-menu="open"] .menu-toggle i:nth-child(2) {
  width: 40px;
  transform: translateY(-4px) rotate(-45deg);
}

.menu-label {
  font-size: var(--step--1);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--bone-dim);
  margin-right: var(--space-2);
}

/* Overlay */
.menu {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: var(--ink-deep);
  display: grid;
  grid-template-rows: 1fr auto;
  padding: calc(var(--space-7) + 1rem) var(--gutter) var(--space-4);
  clip-path: inset(0 0 100% 0);
  transition: clip-path 720ms var(--ease);
  pointer-events: none;
}
body[data-menu="open"] .menu {
  clip-path: inset(0 0 0 0);
  pointer-events: auto;
}

.menu-nav { align-self: center; }
.menu-nav li { overflow: hidden; }
.menu-nav a {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-4);
  line-height: 1.12;
  display: inline-block;
  transform: translateY(105%);
  transition: transform 640ms var(--ease), color var(--dur-fast) var(--ease);
}
body[data-menu="open"] .menu-nav a { transform: translateY(0); }
.menu-nav a:hover { color: var(--brass); }

/* stagger */
body[data-menu="open"] .menu-nav li:nth-child(1) a { transition-delay: 120ms; }
body[data-menu="open"] .menu-nav li:nth-child(2) a { transition-delay: 180ms; }
body[data-menu="open"] .menu-nav li:nth-child(3) a { transition-delay: 240ms; }
body[data-menu="open"] .menu-nav li:nth-child(4) a { transition-delay: 300ms; }
body[data-menu="open"] .menu-nav li:nth-child(5) a { transition-delay: 360ms; }
body[data-menu="open"] .menu-nav li:nth-child(6) a { transition-delay: 420ms; }
body[data-menu="open"] .menu-nav li:nth-child(7) a { transition-delay: 480ms; }

.menu-foot {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  justify-content: space-between;
  align-items: end;
  border-top: 1px solid var(--hairline);
  padding-top: var(--space-3);
  font-size: var(--step--1);
  color: var(--bone-dim);
  opacity: 0;
  transition: opacity 400ms var(--ease) 420ms;
}
body[data-menu="open"] .menu-foot { opacity: 1; }
.menu-foot a:hover { color: var(--brass); }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  min-height: 100svh;
  display: grid;
  align-content: center;
  padding-block: var(--space-7) var(--space-6);
  position: relative;
}

.hero-lockup {
  display: flex;
  align-items: center;
  gap: clamp(0.6rem, 1.6vw, 1.4rem);
  margin-bottom: var(--space-4);
}
.hero-lockup svg {
  width: clamp(58px, 9vw, 128px);
  height: auto;
  flex: none;
}
.hero-lockup .wordmark {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-5);
  line-height: 0.9;
  letter-spacing: var(--tracking-wordmark);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-3);
  line-height: 1.14;
  max-width: 20ch;
  margin-bottom: var(--space-3);
}
.hero h1 em {
  font-style: italic;
  color: var(--brass);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  margin-top: var(--space-4);
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-3);
  left: var(--gutter);
  font-size: var(--step--1);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--bone-dim);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.95rem 1.6rem;
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  border: 1px solid var(--brass);
  color: var(--bone);
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease);
}
.btn:hover { background: var(--brass); color: var(--ink); }

.btn--quiet {
  border-color: var(--hairline-strong);
  color: var(--bone-dim);
}
.btn--quiet:hover { background: transparent; color: var(--bone); border-color: var(--bone); }

.band--paper .btn { color: var(--paper-ink); border-color: var(--brass-soft); }
.band--paper .btn:hover { background: var(--brass-soft); color: var(--paper); }

/* ==========================================================================
   WHAT WE INSTALL — plain list, hairline separated
   ========================================================================== */
.install-list { margin-top: var(--space-4); }
.install-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1) var(--space-4);
  padding-block: var(--space-3);
  border-top: 1px solid var(--hairline-light);
}
.install-list li:last-child { border-bottom: 1px solid var(--hairline-light); }
.install-list h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--step-2);
  line-height: 1.15;
}
.install-list p {
  color: rgba(18, 32, 43, 0.66);
  max-width: 54ch;
}

/* An item links to its workflow page once that page exists. */
.install-list h3 a { border-bottom: 1px solid var(--hairline-light); }
.install-list h3 a:hover {
  color: var(--brass-soft);
  border-bottom-color: var(--brass-soft);
}

@media (min-width: 820px) {
  .install-list li { grid-template-columns: 1fr 1.25fr; }
}

/* ==========================================================================
   HOW IT WORKS — a genuine sequence, so it is genuinely numbered
   ========================================================================== */
.steps {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}
@media (min-width: 860px) {
  .steps { grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
}
.step { border-top: 1px solid var(--hairline); padding-top: var(--space-3); }
.step .num {
  font-family: var(--font-display);
  font-size: var(--step-2);
  color: var(--brass);
  display: block;
  margin-bottom: var(--space-2);
}
.step h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--step-2);
  margin-bottom: var(--space-1);
}
.step p { color: var(--bone-dim); }

/* ==========================================================================
   THE LEDGER — signature element. Priced like a trade, not a SaaS.
   Dot leaders are the typographic device of bills, indexes and menus.
   ========================================================================== */
.ledger {
  margin-top: var(--space-5);
  border-top: 2px solid var(--brass);
}
.ledger-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: var(--space-2);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--hairline);
}
.ledger-row .item { display: block; }
.ledger-row .item strong {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--step-2);
  display: block;
  line-height: 1.2;
}
.ledger-row .item span {
  color: var(--bone-dim);
  font-size: var(--step--1);
  display: block;
  margin-top: 0.35rem;
  max-width: 52ch;
}
.ledger-row .figure {
  font-family: var(--font-display);
  font-size: var(--step-2);
  color: var(--brass);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.ledger-row .figure small {
  display: block;
  font-family: var(--font-body);
  font-size: var(--step--1);
  color: var(--bone-dim);
  text-align: right;
  letter-spacing: 0.04em;
}

.ledger-note {
  margin-top: var(--space-4);
  padding: var(--space-3);
  border: 1px solid var(--hairline);
  background: var(--ink-raised);
  max-width: 60ch;
}
.ledger-note p { color: var(--bone-dim); font-size: var(--step--1); }
.ledger-note p + p { margin-top: var(--space-1); }

/* ==========================================================================
   PROOF / PEOPLE
   ========================================================================== */
.proof {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}
@media (min-width: 860px) { .proof { grid-template-columns: repeat(2, 1fr); } }

.proof-card {
  border: 1px solid var(--hairline);
  padding: var(--space-4) var(--space-3);
  background: var(--ink-raised);
}
.proof-card .figure {
  font-family: var(--font-display);
  font-size: var(--step-4);
  color: var(--brass);
  line-height: 1;
  display: block;
  margin-bottom: var(--space-2);
}
.proof-card p { color: var(--bone-dim); }
.proof-card cite {
  display: block;
  margin-top: var(--space-2);
  font-style: normal;
  font-size: var(--step--1);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bone);
}

/* Placeholder flagging — remove .is-placeholder once real content is in */
.is-placeholder { position: relative; }
.is-placeholder::after {
  content: "PLACEHOLDER — REPLACE";
  position: absolute;
  top: 0; right: 0;
  font-family: var(--font-body);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  padding: 0.3rem 0.5rem;
  background: var(--brass);
  color: var(--ink);
}

/* ==========================================================================
   CASE STUDIES
   Same devices as the rest of the site: hairline rules, no cards, the figure
   carried by the existing .proof-card treatment.
   ========================================================================== */
.case { padding-top: var(--space-4); }
.case + .case { margin-top: var(--space-6); }

.case-head { border-top: 2px solid var(--brass); padding-top: var(--space-3); }

.case-head h2 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-3);
  line-height: 1.1;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  margin-top: var(--space-2);
  font-size: var(--step--1);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--bone-dim);
}

.case-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}
@media (min-width: 860px) {
  .case-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
}

.case-block { border-top: 1px solid var(--hairline); padding-top: var(--space-3); }

/* The placeholder tag is pinned to the element's top-right corner, so a block
   whose content starts at the top needs room or the tag lands on the heading. */
.case-block.is-placeholder { padding-top: calc(var(--space-3) + 1.6rem); }
.case-meta .is-placeholder { padding-right: 11.5rem; }

.case-block h3 {
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: var(--space-2);
}
.case-block p { color: var(--bone-dim); }

.case-figure { margin-top: var(--space-4); }

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-grid { display: grid; gap: var(--space-4); margin-top: var(--space-4); }
@media (min-width: 860px) { .contact-grid { grid-template-columns: 1.1fr 0.9fr; gap: var(--space-6); } }

.contact-lines { margin-top: var(--space-3); }
.contact-lines li {
  padding-block: var(--space-2);
  border-bottom: 1px solid var(--hairline-light);
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.contact-lines .k {
  font-size: var(--step--1);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--brass-soft);
}
.contact-lines .v { font-family: var(--font-display); font-size: var(--step-1); }

/* Service area sits under the contact lines — plain prose, no new device. */
.service-area {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--hairline-light);
}
.service-area .k {
  display: block;
  font-size: var(--step--1);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--brass-soft);
  margin-bottom: var(--space-1);
}
.service-area p { color: rgba(18, 32, 43, 0.68); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--ink-deep);
  padding-block: var(--space-5) var(--space-3);
  border-top: 1px solid var(--hairline);
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: end;
  padding-bottom: var(--space-4);
}
.footer-motto {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 300;
  max-width: 22ch;
}
.footer-area {
  font-size: var(--step--1);
  color: var(--bone-dim);
  max-width: 30ch;
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  justify-content: space-between;
  border-top: 1px solid var(--hairline);
  padding-top: var(--space-3);
  font-size: var(--step--1);
  color: var(--bone-dim);
}
.footer-nav { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.footer-nav a:hover, .footer-bottom a:hover { color: var(--brass); }

/* ==========================================================================
   MOTION — the mark draws itself once on load. One moment, not many.
   ========================================================================== */
.mark-path {
  stroke-dasharray: var(--len, 400);
  stroke-dashoffset: var(--len, 400);
  animation: draw 1100ms var(--ease) forwards;
}
.mark-path:nth-child(2) { animation-delay: 90ms; }
.mark-path:nth-child(3) { animation-delay: 180ms; }
.mark-path:nth-child(4) { animation-delay: 270ms; }

@keyframes draw { to { stroke-dashoffset: 0; } }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .mark-path { stroke-dashoffset: 0; }
  .reveal { opacity: 1; transform: none; }
  .menu { transition: none; }
}

/* ---------- Small screens ---------- */
@media (max-width: 640px) {
  .hero-lockup { gap: 0.5rem; }
  .menu-label { display: none; }
  .ledger-row { grid-template-columns: 1fr; }
  .ledger-row .figure { text-align: left; }
  .ledger-row .figure small { text-align: left; }
}