/* Cubic Street — shared styles */

:root {
  --off-white-light: #f8f3ed;
  --off-white-mid: #efebe6;
  --green: #1b795b;
  --green-deep: #155f47;
  --black: #000000;
  --dark-grey: #505050;
  --hairline: rgba(80, 80, 80, 0.18);
  --hairline-strong: rgba(80, 80, 80, 0.35);

  --max: 1280px;
  --gutter: clamp(20px, 4vw, 64px);

  --serif: "Spectral", "Source Serif 4", Georgia, serif;
  --sans: "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--off-white-light);
  color: var(--black);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }

::selection { background: var(--green); color: var(--off-white-light); }

/* ---------- NAV ---------- */
.cs-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--off-white-light);
  border-bottom: 1px solid var(--hairline);
}
.cs-nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.cs-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.cs-logo img {
  height: 26px;
  width: auto;
}
.cs-nav-links {
  display: flex;
  gap: 36px;
  font-size: 14px;
  letter-spacing: 0.02em;
}
.cs-nav-links a {
  color: var(--dark-grey);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}
.cs-nav-links a:hover,
.cs-nav-links a.active {
  color: var(--black);
}
.cs-nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--green);
}
.cs-nav-cta {
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--black);
  border: 1px solid var(--black);
  padding: 10px 18px;
  transition: background 0.18s ease, color 0.18s ease;
}
.cs-nav-cta:hover {
  background: var(--black);
  color: var(--off-white-light);
}

/* ---------- LAYOUT ---------- */
.cs-section {
  padding: clamp(64px, 10vw, 140px) 0;
  border-bottom: 1px solid var(--hairline);
}
.cs-section.no-border { border-bottom: none; }
.cs-section.alt { background: var(--off-white-mid); }
.cs-container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.cs-narrow {
  max-width: 820px;
}

/* ---------- TYPE ---------- */
.cs-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin: 0 0 20px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.cs-eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--green);
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--black);
  text-wrap: balance;
}
h1 {
  font-size: clamp(40px, 6.2vw, 84px);
  line-height: 1.02;
  font-weight: 350;
}
h2 {
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.08;
  font-weight: 350;
}
h3 {
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.18;
  font-weight: 400;
}
h4 {
  font-size: 20px;
  line-height: 1.3;
}

p {
  margin: 0 0 1.1em;
  color: var(--dark-grey);
  text-wrap: pretty;
  max-width: 64ch;
}
p.lead {
  font-size: clamp(19px, 1.7vw, 22px);
  line-height: 1.55;
  color: var(--black);
  max-width: 60ch;
}
em {
  font-style: italic;
  color: var(--black);
}
strong { font-weight: 500; color: var(--black); }

/* ---------- PILLS ---------- */
.cs-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
  padding: 0;
  list-style: none;
}
.cs-pill {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dark-grey);
  border: 1px solid var(--hairline-strong);
  padding: 6px 12px;
  border-radius: 999px;
  background: transparent;
  white-space: nowrap;
}
.cs-pill.solid {
  background: var(--green);
  color: var(--off-white-light);
  border-color: var(--green);
}

/* ---------- BUTTONS ---------- */
.cs-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 16px 28px;
  border: 1px solid var(--black);
  background: var(--black);
  color: var(--off-white-light);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.cs-btn:hover {
  background: var(--green);
  border-color: var(--green);
}
.cs-btn.outline {
  background: transparent;
  color: var(--black);
}
.cs-btn.outline:hover {
  background: var(--black);
  color: var(--off-white-light);
}
.cs-btn .arrow {
  display: inline-block;
  transition: transform 0.18s ease;
}
.cs-btn:hover .arrow { transform: translateX(4px); }

.cs-text-link {
  color: var(--black);
  border-bottom: 1px solid var(--green);
  padding-bottom: 1px;
  transition: color 0.18s ease, border-color 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cs-text-link:hover { color: var(--green); }
.cs-text-link .arrow { font-family: var(--mono); }

/* ---------- HAIRLINES ---------- */
.cs-rule {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 0;
}

/* ---------- OAR MARK (two-stroke motif from logo) ---------- */
.cs-oar {
  display: inline-block;
  width: 28px;
  height: 14px;
  position: relative;
}
.cs-oar::before, .cs-oar::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 4px;
  background: var(--dark-grey);
  border-radius: 2px;
  transform: rotate(-22deg);
  top: 5px;
}
.cs-oar::before { left: 0; }
.cs-oar::after { left: 14px; }

/* ---------- FOOTER ---------- */
.cs-footer {
  background: var(--off-white-mid);
  border-top: 1px solid var(--hairline);
  padding: 64px 0 32px;
  margin-top: 0;
}
.cs-footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
}
.cs-footer h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dark-grey);
  margin: 0 0 16px;
  font-weight: 500;
}
.cs-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.cs-footer li { margin-bottom: 10px; font-size: 14px; }
.cs-footer li a { color: var(--dark-grey); }
.cs-footer li a:hover { color: var(--black); }
.cs-footer .cs-footer-sign {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dark-grey);
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.cs-footer-tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.35;
  color: var(--black);
  text-transform: none;
  letter-spacing: -0.01em;
  margin: 0;
  max-width: 32ch;
}

/* ---------- HERO ---------- */
.cs-hero {
  padding: clamp(80px, 12vw, 160px) 0 clamp(64px, 10vw, 120px);
  border-bottom: 1px solid var(--hairline);
  position: relative;
  overflow: hidden;
}
.cs-hero h1 em {
  font-style: italic;
  color: var(--green);
}
.cs-hero-meta {
  display: flex;
  gap: 32px;
  margin-top: 56px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dark-grey);
  flex-wrap: wrap;
}
.cs-hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.cs-hero-meta span::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
}

/* ---------- TWO-COL ---------- */
.cs-two-col {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}
.cs-two-col .col-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dark-grey);
}
@media (max-width: 800px) {
  .cs-two-col { grid-template-columns: 1fr; }
}

/* ---------- THREE-COL CARDS ---------- */
.cs-three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--hairline);
}
.cs-three-col > * {
  padding: 40px 32px 40px 0;
  border-right: 1px solid var(--hairline);
}
.cs-three-col > *:last-child { border-right: none; padding-right: 0; }
.cs-three-col > *:not(:first-child) { padding-left: 32px; }
.cs-three-col .num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--green);
  display: block;
  margin-bottom: 18px;
}
.cs-three-col h3 { margin-bottom: 12px; }
@media (max-width: 800px) {
  .cs-three-col { grid-template-columns: 1fr; }
  .cs-three-col > * { border-right: none; border-bottom: 1px solid var(--hairline); padding: 32px 0; }
  .cs-three-col > *:not(:first-child) { padding-left: 0; }
}

/* ---------- HAMBURGER / MOBILE NAV ---------- */
.cs-nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 6px 2px;
  background: none;
  border: none;
  margin-left: 8px;
}
.cs-nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--black);
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.cs-nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.cs-nav-hamburger.open span:nth-child(2) { opacity: 0; }
.cs-nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.cs-nav-mobile {
  display: none;
  background: var(--off-white-light);
  border-top: 1px solid var(--hairline);
}
.cs-nav-mobile.open { display: block; }
.cs-nav-mobile a {
  display: block;
  padding: 16px var(--gutter);
  font-size: 15px;
  color: var(--dark-grey);
  border-bottom: 1px solid var(--hairline);
  transition: color 0.18s ease;
}
.cs-nav-mobile a:hover,
.cs-nav-mobile a.active { color: var(--black); }
.cs-nav-mobile .cs-nav-mobile-cta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--black);
  border-bottom: none;
  padding-bottom: 20px;
}

@media (max-width: 720px) {
  .cs-nav-links { display: none; }
  .cs-nav-cta { display: none; }
  .cs-nav-hamburger { display: flex; }
  .cs-hero-meta { gap: 18px; }
}

/* ---------- FOOTER MOBILE ---------- */
@media (max-width: 640px) {
  .cs-footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cs-footer .cs-footer-sign {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

/* ---------- UTIL ---------- */
.green { color: var(--green); }
.muted { color: var(--dark-grey); }
.serif { font-family: var(--serif); }
.mono { font-family: var(--mono); }
.italic { font-style: italic; }