/* ============================================
   DELTA T GROWTH — DESIGN SYSTEM
   Bold, industrial, trades-vernacular
   ============================================ */

:root {
  /* INK (dark base) */
  --ink: #0c0c0d;
  --ink-2: #141416;
  --ink-3: #1c1c1f;
  --ink-4: #26262a;

  /* PAPER (warm cream — for inverted sections) */
  --paper: #f4ece0;
  --paper-2: #e8dfd0;
  --paper-3: #d6cbb8;

  /* BRAND */
  --orange: #e85d04;
  --orange-2: #ff7518;
  --orange-deep: #b84500;

  /* TEXT */
  --text: #f5f2ed;
  --text-dim: #b8b3ab;
  --text-muted: #8a857d;

  /* TYPE */
  --display: 'Archivo Black', 'Helvetica Neue', Arial, sans-serif;
  --body: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* RULES / BORDERS */
  --rule: rgba(255, 255, 255, 0.08);
  --rule-strong: rgba(255, 255, 255, 0.18);
  --rule-paper: rgba(12, 12, 13, 0.12);
  --rule-paper-strong: rgba(12, 12, 13, 0.28);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* Display type — bold but readable */
h1, h2, h3, h4, .display {
  letter-spacing: -0.02em;
  word-spacing: 0.04em;
}
img, svg { display: block; max-width: 100%; }
::selection { background: var(--orange); color: #fff; }

/* ============================================
   UTILITIES
   ============================================ */
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.container-narrow { max-width: 920px; margin: 0 auto; padding: 0 32px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--orange);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--orange);
}
.eyebrow.on-paper { color: var(--orange-deep); }
.eyebrow.on-paper::before { background: var(--orange-deep); }

.display {
  font-family: var(--display);
  font-weight: 400; /* Anton has only 400 */
  text-transform: uppercase;
  line-height: 0.9;
  letter-spacing: -0.005em;
}

/* ============================================
   NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(12, 12, 13, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
  height: 72px;
  display: flex;
  align-items: center;
}
.nav-inner {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  font-family: var(--display);
  font-size: 26px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 2px;
  white-space: nowrap;
}
.logo .dot {
  display: inline-block;
  width: 10px; height: 10px;
  background: var(--orange);
  margin-right: 8px;
  transform: translateY(-1px);
}
.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
  list-style: none;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.15s;
  padding: 8px 0;
  position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--orange);
}
.nav-cta {
  background: var(--orange);
  color: #fff;
  font-family: var(--body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.15s, transform 0.15s;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--orange-2); transform: translateY(-1px); }
.nav-cta svg { width: 14px; height: 14px; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: var(--ink-2);
  border-bottom: 1px solid var(--rule);
  z-index: 99;
  padding: 24px 32px 32px;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu a {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.mobile-menu .nav-cta { margin-top: 16px; text-align: center; justify-content: center; padding: 16px; }
.mobile-menu.open { display: flex; }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 18px 28px;
  transition: background 0.15s, transform 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
  cursor: pointer;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary {
  background: var(--orange);
  color: #fff;
}
.btn-primary:hover { background: var(--orange-2); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--rule-strong);
}
.btn-ghost:hover { border-color: var(--text); }
.btn-ghost.on-paper { color: var(--ink); border-color: var(--rule-paper-strong); }
.btn-ghost.on-paper:hover { border-color: var(--ink); background: rgba(0,0,0,0.05); }

.btn-block { display: flex; width: 100%; justify-content: center; }
.btn-lg { padding: 22px 36px; font-size: 15px; }

/* ============================================
   PAGE PADDING / SECTIONS
   ============================================ */
main { padding-top: 72px; }
.section { padding: 110px 0; position: relative; }
.section-sm { padding: 72px 0; }
.section-paper { background: var(--paper); color: var(--ink); }
.section-paper .text-muted { color: var(--ink-3); opacity: 0.7; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: #08080a;
  border-top: 1px solid var(--rule);
  padding: 80px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer-brand .logo { font-size: 32px; margin-bottom: 16px; }
.footer-tagline {
  font-size: 15px;
  color: var(--text-dim);
  max-width: 320px;
  line-height: 1.65;
}
.footer-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color 0.15s;
}
.footer-col a:hover { color: var(--orange); }
.footer-bottom {
  border-top: 1px solid var(--rule);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy { font-size: 13px; color: var(--text-muted); }
.footer-meta { font-family: var(--mono); font-size: 11px; color: var(--text-muted); letter-spacing: 0.06em; }

/* Tap feedback for buttons and links */
.btn:active, .nav-cta:active, .hero-cta-row a:active { transform: translateY(1px) scale(0.99); }

/* Mobile sticky bottom CTA bar */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 95;
  background: var(--orange);
  padding: 14px 16px;
  border-top: 2px solid var(--orange-deep);
  box-shadow: 0 -8px 24px rgba(0,0,0,0.3);
}
.mobile-cta-bar a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  background: #fff;
  color: var(--ink);
  font-family: var(--body);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 16px;
}
.mobile-cta-bar a svg { width: 16px; height: 16px; }

@media (max-width: 760px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-cta.desktop-only { display: none; }
  .mobile-cta-bar { display: block; }
  body { padding-bottom: 80px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .section { padding: 72px 0; }
  .container, .container-narrow { padding: 0 20px; }
}