/* ============================================================
   DEEPROOT MINDS — DESIGN SYSTEM
   Award-grade minimalism. Editorial precision. Restraint.
   ============================================================ */

:root {
  /* Core palette — deep moss to warm parchment */
  --ink: #0f1a13;
  --moss: #1c3a2b;
  --root: #234a35;
  --sage: #6b8a74;
  --fog: #b8c4b0;
  --cream: #f3eee1;
  --paper: #ebe3cf;
  --vellum: #e4dbc1;
  --clay: #c4502d;
  --gold: #b8893a;
  --spark: #d9a441;

  /* Functional */
  --grid: rgba(35, 74, 53, 0.08);
  --line: rgba(35, 74, 53, 0.2);
  --shadow-sm: 0 4px 12px rgba(15, 26, 19, 0.08);
  --shadow-md: 0 12px 40px -10px rgba(15, 26, 19, 0.2);
  --shadow-lg: 0 30px 80px -30px rgba(15, 26, 19, 0.35);

  /* Type */
  --font-display: 'Fraunces', 'Times New Roman', Georgia, serif;
  --font-body: 'Inter Tight', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Layout */
  --max-w: 1440px;
  --gutter: 40px;
  --radius: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--ink);
  overflow-x: hidden;
  line-height: 1.5;
  font-feature-settings: "ss01", "liga", "dlig";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Paper grain overlay — gives everything a physical feel */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.4;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1  0 0 0 0 0.1  0 0 0 0 0.07  0 0 0 0.05 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
}

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

a { color: inherit; text-decoration: none; }

/* ================ NAV ================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 18px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(243, 238, 225, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(35, 74, 53, 0.1);
  transition: padding 0.4s ease, background 0.3s;
}

.nav.scrolled { padding: 12px 40px; background: rgba(243, 238, 225, 0.95); }

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.logo-mark {
  width: 38px;
  height: 38px;
  position: relative;
}

.logo-mark svg {
  width: 100%;
  height: 100%;
  transform-origin: center;
  animation: logoBreath 6s ease-in-out infinite;
}

@keyframes logoBreath {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.04) rotate(1deg); }
}

.logo-mark svg .node { transform-origin: center; }
.logo-mark svg .node-a { animation: pulse 2.4s ease-in-out infinite; }
.logo-mark svg .node-b { animation: pulse 2.4s ease-in-out 0.3s infinite; }
.logo-mark svg .node-c { animation: pulse 2.4s ease-in-out 0.6s infinite; }
.logo-mark svg .node-d { animation: pulse 2.4s ease-in-out 0.9s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.logo em {
  font-style: italic;
  font-weight: 300;
  color: var(--root);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.01em;
}

.nav-links a {
  color: var(--moss);
  position: relative;
  padding: 4px 0;
  transition: color 0.3s;
}

.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 0;
  height: 1px;
  background: var(--clay);
  transition: width 0.3s ease;
}

.nav-links a:not(.nav-cta):hover::after { width: 100%; }

.nav-links a.active { color: var(--clay); }
.nav-links a.active::after { width: 100%; background: var(--clay); }

.nav-cta {
  padding: 10px 18px;
  border: 1px solid var(--moss);
  border-radius: 999px;
  color: var(--ink) !important;
  background: transparent;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-cta:hover {
  background: var(--ink);
  color: var(--cream) !important;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--ink);
}

.nav-toggle svg { width: 24px; height: 24px; }

/* ================ TYPOGRAPHY UTILITIES ================ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--root);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border: 1px solid rgba(35, 74, 53, 0.3);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.3);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--clay);
  box-shadow: 0 0 0 0 rgba(196, 80, 45, 0.5);
  animation: ping 2s infinite;
}

@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(196, 80, 45, 0.5); }
  70% { box-shadow: 0 0 0 10px rgba(196, 80, 45, 0); }
  100% { box-shadow: 0 0 0 0 rgba(196, 80, 45, 0); }
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink);
}

h1 em, h2 em, h3 em, h4 em {
  font-style: italic;
  font-weight: 300;
  color: var(--clay);
}

p { color: var(--moss); }

/* ================ BUTTONS ================ */
.btn-primary {
  padding: 16px 32px;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s;
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--clay);
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.7, 0, 0.3, 1);
  z-index: 0;
}

.btn-primary:hover::before { transform: translateY(0); }
.btn-primary span, .btn-primary svg { position: relative; z-index: 1; }
.btn-primary svg { transition: transform 0.3s; }
.btn-primary:hover svg { transform: translateX(4px); }

.btn-ghost {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 8px;
  border-bottom: 1px solid var(--ink);
  transition: gap 0.3s;
}

.btn-ghost:hover { gap: 14px; }

.btn-cream {
  padding: 18px 32px;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  transition: all 0.4s;
  cursor: pointer;
  border: none;
}

.btn-cream:hover { background: var(--spark); transform: translateX(4px); }

.btn-outline-cream {
  padding: 18px 32px;
  border: 1px solid var(--cream);
  color: var(--cream);
  background: transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  transition: all 0.4s;
  cursor: pointer;
}

.btn-outline-cream:hover { background: var(--cream); color: var(--ink); }

/* ================ SECTION STRUCTURE ================ */
.section {
  padding: 120px 40px;
  position: relative;
}

.section-inner { max-width: var(--max-w); margin: 0 auto; }

.section-header {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 60px;
  margin-bottom: 80px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.section-number {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sage);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding-top: 12px;
}

.section-number strong {
  display: block;
  color: var(--clay);
  font-size: 14px;
  margin-bottom: 4px;
  font-weight: 500;
}

.section-title {
  font-size: clamp(2.2rem, 4.5vw, 4rem);
}

/* ================ FOOTER ================ */
footer {
  background: var(--ink);
  color: var(--fog);
  padding: 80px 40px 40px;
}

.footer-inner { max-width: var(--max-w); margin: 0 auto; }

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(235, 227, 207, 0.15);
}

.footer-brand .logo-mark svg line { stroke: #ebe3cf; }
.footer-brand .logo-mark svg circle:not(.node-big) { fill: #d9a441; }
.footer-brand .logo-mark svg circle.node-big { fill: #ebe3cf; }

.footer-brand .logo { color: var(--cream); margin-bottom: 20px; }
.footer-brand .logo em { color: var(--spark); }

.footer-tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: 18px;
  color: var(--fog);
  line-height: 1.4;
  margin-bottom: 20px;
}

.footer-contact {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.8;
  color: var(--sage);
  letter-spacing: 0.05em;
}

.footer-contact strong {
  color: var(--cream);
  font-weight: 500;
  display: block;
  margin-bottom: 6px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-size: 10px;
}

.footer-contact a {
  color: var(--fog);
  transition: color 0.3s;
}

.footer-contact a:hover { color: var(--spark); }

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--sage);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 400;
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }

.footer-col a {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--fog);
  transition: color 0.3s;
}

.footer-col a:hover { color: var(--spark); }

.footer-bottom {
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--sage);
  letter-spacing: 0.1em;
  flex-wrap: wrap;
  gap: 20px;
}

/* ================ PAGE HERO (Interior pages) ================ */
.page-hero {
  padding: 180px 40px 100px;
  position: relative;
  border-bottom: 1px solid var(--line);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at 70% 50%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 50%, black 20%, transparent 80%);
  pointer-events: none;
}

.page-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: center;
}

.page-hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  margin-top: 28px;
  margin-bottom: 28px;
}

.page-hero .lede {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.6;
  color: var(--moss);
  max-width: 560px;
  margin-bottom: 36px;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--sage);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.breadcrumb a { color: var(--sage); transition: color 0.3s; }
.breadcrumb a:hover { color: var(--clay); }
.breadcrumb .sep { color: var(--fog); }

/* ================ MOBILE NAV OVERLAY ================ */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--cream);
  z-index: 49;
  display: none;
  flex-direction: column;
  padding: 80px 40px 40px;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav.open { transform: translateX(0); }

.mobile-nav a {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--ink);
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  letter-spacing: -0.02em;
}

/* ================ RESPONSIVE ================ */
@media (max-width: 1024px) {
  .nav { padding: 14px 20px; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .mobile-nav { display: flex; }
  .section { padding: 80px 20px; }
  .section-header { grid-template-columns: 1fr; gap: 20px; margin-bottom: 50px; }
  .page-hero { padding: 140px 20px 60px; }
  .page-hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  footer { padding: 60px 20px 30px; }
}

@media (max-width: 640px) {
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
}

/* ================ UTILS ================ */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}