/* NRX Auaha — design system */
:root {
  /* NRX Auaha brand palette */
  --bg:          #efe6da;
  --bg-2:        #e6dac8;
  --ink:         #044e52;
  --ink-2:       #2a5f62;
  --muted:       #6a8080;
  --hair:        #c8b99a;
  --primary:     #044e52;
  --primary-ink: #033c3f;
  --teal:        #044e52;
  --teal-2:      #2a5f62;
  --accent:      #B8922A;
  --rust:        #b84a2b;
  --sand:        #e6dac8;

  --f-display: "Instrument Serif", "Cormorant Garamond", Georgia, serif;
  --f-body:    "Geist", "Söhne", ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --step-xs:  0.75rem;
  --step-sm:  0.875rem;
  --step-md:  1rem;
  --step-lg:  1.125rem;
  --step-xl:  1.5rem;
  --step-2xl: 2rem;
  --step-3xl: clamp(2.5rem, 5vw, 4.25rem);
  --step-4xl: clamp(3.5rem, 9vw, 8rem);
  --step-5xl: clamp(4.5rem, 12vw, 11rem);

  --r-sm: 4px;
  --r-md: 10px;
  --r-lg: 18px;
}

[data-theme="dark"] {
  --bg:      #0a1a1a;
  --bg-2:    #112020;
  --ink:     #eff5f5;
  --ink-2:   #b8cccc;
  --muted:   #6a8888;
  --hair:    #1a3232;
  --primary: #1a8080;
  --teal:    #1a8080;
  --sand:    #142828;
}

/* Scroll progress bar */
#progress {
  position: fixed; top: 0; left: 0;
  height: 2px; width: 0%;
  background: var(--accent);
  z-index: 999; transition: width 0.08s;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; width: 100%; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "ss02";
}

/* Type utilities */
.display {
  font-family: var(--f-display);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.015em;
  font-style: normal;
}
.display-italic { font-style: italic; letter-spacing: -0.02em; }
h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 400; letter-spacing: -0.015em; margin: 0; }
h1 { font-size: var(--step-4xl); line-height: 0.95; }
h2 { font-size: var(--step-3xl); line-height: 1.0; }
h3 { font-size: var(--step-2xl); line-height: 1.1; }
h4 { font-size: var(--step-xl); line-height: 1.2; }
p { margin: 0; max-width: 64ch; text-wrap: pretty; }

.label, .eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.label::before, .eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--hair);
  flex-shrink: 0;
}

.mono { font-family: var(--f-mono); }

a { color: inherit; text-decoration: none; }
a.link {
  border-bottom: 1px solid var(--hair);
  transition: border-color .2s, color .2s;
  padding-bottom: 1px;
}
a.link:hover { border-color: var(--accent); color: var(--accent); }

.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}
@media (max-width: 720px) { .container { padding: 0 20px; } }

.hair { height: 1px; background: var(--hair); width: 100%; }
.hair-v { width: 1px; background: var(--hair); align-self: stretch; }

.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  font-family: var(--f-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .2s ease;
  text-decoration: none;
  background: none;
}
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--primary-ink); }
.btn-ghost { border-color: var(--hair); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); background: var(--ink); color: var(--bg); }
.btn-accent { background: var(--accent); color: #FFF8EF; }
.btn-accent:hover { background: #956f1a; }
.btn .arrow { font-family: var(--f-mono); font-size: 15px; transition: transform .25s; }
.btn:hover .arrow { transform: translateX(3px); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hair);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
}
.brand img { height: 36px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--f-display); font-size: 18px;
  color: var(--ink); letter-spacing: -0.01em;
}
.brand-sub {
  font-family: var(--f-mono); font-size: 10px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
}
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--ink-2);
  border-radius: 999px;
  transition: background .2s, color .2s;
}
.nav-links a:hover { color: var(--ink); background: var(--sand); }
.nav-links a.active { color: var(--ink); background: var(--sand); }
.nav-cta { display: flex; gap: 8px; align-items: center; }

@media (max-width: 1120px) {
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  .nav-cta .btn-ghost { display: none; }
}

/* Placeholder image */
.ph {
  position: relative; overflow: hidden;
  background:
    repeating-linear-gradient(135deg, transparent 0 10px, color-mix(in oklab, var(--ink) 4%, transparent) 10px 11px),
    var(--sand);
  color: var(--ink-2);
  display: flex; align-items: flex-end; padding: 14px;
  font-family: var(--f-mono); font-size: 10px;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.ph .ph-ix { position: absolute; top: 14px; left: 14px; }
.ph .ph-cap { opacity: 0.7; }

/* Section */
section { padding: 96px 0; }
@media (max-width: 720px) { section { padding: 64px 0; } }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 32px;
  margin-bottom: 48px; flex-wrap: wrap;
}
.section-head .label { margin-bottom: 8px; display: block; }

/* Card */
.card {
  background: var(--bg-2);
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  padding: 28px;
  transition: transform .3s, border-color .3s;
}
.card:hover { border-color: var(--ink-2); }

/* Ticker / marquee */
.marquee {
  overflow: hidden; white-space: nowrap; position: relative;
  border-top: 1px solid var(--hair); border-bottom: 1px solid var(--hair);
  padding: 18px 0;
}
.marquee-track {
  display: inline-flex; gap: 56px;
  animation: marquee 40s linear infinite;
  padding-left: 56px;
}
.marquee span {
  font-family: var(--f-display); font-size: 28px; font-style: italic;
  color: var(--ink-2);
}
.marquee span.dot { color: var(--accent); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Footer */
footer { padding: 80px 0 40px; border-top: 1px solid var(--hair); background: var(--bg); }

/* Transitions between routes */
.route-enter { animation: fadein .5s ease both; }
@keyframes fadein {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tweaks panel */
.tweaks {
  position: fixed; right: 20px; bottom: 20px; z-index: 100;
  width: 320px; max-width: calc(100vw - 40px);
  background: var(--bg);
  border: 1px solid var(--ink);
  border-radius: 14px;
  padding: 18px;
  font-size: 13px;
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.25);
}
.tweaks h5 {
  font-family: var(--f-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  margin: 0 0 12px; color: var(--muted); font-weight: 500;
}
.tweaks .row { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.tweaks button.chip {
  font-family: var(--f-mono); font-size: 11px;
  padding: 6px 10px; border-radius: 999px;
  border: 1px solid var(--hair); background: var(--bg);
  color: var(--ink-2); cursor: pointer;
}
.tweaks button.chip.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* Selection */
::selection { background: var(--accent); color: #FFF8EF; }

/* Hide scrollbars on specific rows */
.noscroll::-webkit-scrollbar { display: none; }
.noscroll { scrollbar-width: none; }

/* ── Mobile hamburger ─────────────────────────────────────── */
.nav-hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  padding: 6px; color: var(--ink);
  flex-direction: column; gap: 5px; align-items: center; justify-content: center;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--ink); border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
@media (max-width: 1120px) { .nav-hamburger { display: flex; } }

.nav-mobile {
  position: fixed; top: 64px; left: 0; right: 0; z-index: 48;
  background: var(--bg); border-bottom: 1px solid var(--hair);
  padding: 16px 20px 24px; display: flex; flex-direction: column; gap: 4px;
  transform: translateY(-110%); opacity: 0;
  transition: transform .3s ease, opacity .3s ease;
  pointer-events: none;
}
.nav-mobile.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.nav-mobile a {
  padding: 12px 16px; font-size: 15px; color: var(--ink);
  border-radius: 8px; display: block;
}
.nav-mobile a:hover, .nav-mobile a.active { background: var(--sand); }

/* ── Footer grid ──────────────────────────────────────────── */
.footer-grid {
  display: grid;
  grid-template-columns: 5fr 2fr 2fr 3fr;
  gap: 24px; margin-bottom: 64px;
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-tagline { grid-column: span 2; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-tagline { grid-column: span 1; }
}
.footer-bottom {
  display: flex; justify-content: space-between;
  font-family: var(--f-mono); font-size: 11px;
  color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase;
}
@media (max-width: 560px) { .footer-bottom { flex-direction: column; gap: 8px; } }

/* ── Thesis layout ────────────────────────────────────────── */
.thesis-layout {
  display: grid; grid-template-columns: 280px 1fr;
  max-width: 1440px; margin: 0 auto;
  padding: 0 40px; gap: 64px;
}
.thesis-chapter-select { display: none; }
@media (max-width: 960px) {
  .thesis-layout { grid-template-columns: 1fr; padding: 0 20px; gap: 0; }
  .thesis-sidebar { display: none; }
  .thesis-chapter-select {
    display: block; width: 100%; margin: 24px 0 32px;
    padding: 12px 16px; font-size: 14px; font-family: var(--f-body);
    background: var(--bg-2); border: 1px solid var(--hair); border-radius: 8px;
    color: var(--ink); cursor: pointer;
  }
}

/* ── Responsive grid helpers ──────────────────────────────── */
.r-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.r-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.r-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid rgba(239,230,218,0.14); }
.ntr-grid  { display: grid; grid-template-columns: repeat(3, 1fr); }

/* Path cards: side by side → stacked */
.path-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--hair); border-radius: 14px; overflow: hidden; }
/* Research teaser: 5fr 7fr → stacked */
.research-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 64px; align-items: start; }
/* CTA banner: 3fr 2fr → stacked */
.cta-grid { display: grid; grid-template-columns: 3fr 2fr; gap: 64px; align-items: end; }
/* Approach: 1fr 1fr → stacked */
.approach-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
/* Outcomes row: 80px 1fr 1fr → simpler on mobile */
.outcome-row { display: grid; grid-template-columns: 80px 1fr 1fr; gap: 32px; padding: 28px 0; border-bottom: 1px solid var(--hair); align-items: baseline; }
/* Values row: 1fr 1fr 2fr → stacked */
.values-row { display: grid; grid-template-columns: 1fr 1fr 2fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--hair); align-items: baseline; }

@media (max-width: 900px) {
  .r-grid-2 { grid-template-columns: 1fr; }
  .r-grid-3 { grid-template-columns: 1fr 1fr; }
  .r-grid-4 { grid-template-columns: 1fr 1fr; }
  .path-cards { grid-template-columns: 1fr; border-radius: 10px; }
  .research-grid { grid-template-columns: 1fr; gap: 40px; }
  .cta-grid { grid-template-columns: 1fr; gap: 32px; }
  .approach-grid { grid-template-columns: 1fr; gap: 40px; }
  .outcome-row { grid-template-columns: 40px 1fr; gap: 16px; }
  .outcome-row > p { grid-column: 2; margin-top: -8px; }
  .values-row { grid-template-columns: 1fr 1fr; }
  .values-row > div:last-child { grid-column: span 2; }
}
@media (max-width: 600px) {
  .r-grid-3 { grid-template-columns: 1fr; }
  .r-grid-4 { grid-template-columns: 1fr; }
  .ntr-grid  { grid-template-columns: 1fr; }
  .values-row { grid-template-columns: 1fr; }
  .values-row > div:last-child { grid-column: span 1; }
}
@media (max-width: 768px) {
  .ntr-grid { grid-template-columns: 1fr; }
}

/* Prevent any element from causing horizontal scroll */
body { overflow-x: hidden; }

/* ── Services / Professionals / Circle responsive column layouts ── */
/* Use these classes on grid containers; keep gap/alignment as inline styles */
.cols-2-1  { display: grid; grid-template-columns: 2fr 1fr; }
.cols-1-2  { display: grid; grid-template-columns: 1fr 2fr; }
.cols-3-2  { display: grid; grid-template-columns: 3fr 2fr; }
.cols-1-1  { display: grid; grid-template-columns: 1fr 1fr; }
.cols-fw   { display: grid; grid-template-columns: 200px 1fr; }
.cols-3    { display: grid; grid-template-columns: repeat(3, 1fr); }
.cols-4    { display: grid; grid-template-columns: repeat(4, 1fr); }
.cols-rec  { display: grid; grid-template-columns: 1fr 2fr 100px; }

@media (max-width: 880px) {
  .cols-2-1, .cols-1-2, .cols-3-2, .cols-1-1, .cols-fw { grid-template-columns: 1fr; }
  .cols-4 { grid-template-columns: 1fr 1fr; }
  .cols-3 { grid-template-columns: 1fr 1fr; }
  .cols-rec { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .cols-rec { grid-template-columns: 1fr; }
}