/* ═══════════════════════════════════════════════════════
   CORDANT — Design System
   Dark mode, institutional authority, architectural precision
   Palantir + SpaceX visual language adapted for fintech/enterprise
═══════════════════════════════════════════════════════ */

:root {
  /* Core palette */
  --black:      #080C10;
  --dark-1:     #0D1117;
  --dark-2:     #111820;
  --dark-3:     #18222E;
  --dark-4:     #1E2D3D;
  --border:     rgba(255,255,255,0.07);
  --border-mid: rgba(255,255,255,0.12);

  /* Type */
  --white:      #FFFFFF;
  --gray-1:     rgba(255,255,255,0.85);
  --gray-2:     rgba(255,255,255,0.55);
  --gray-3:     rgba(255,255,255,0.30);

  /* Accent — Teal */
  --teal:       #009FDF;
  --teal-dim:   #008CC4;
  --teal-bg:    rgba(0,159,223,0.08);
  --teal-border:rgba(0,159,223,0.20);

  /* Typography */
  --font-sans:  'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-title: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --max-w:      1200px;
  --section-v:  120px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--black);
  color: var(--gray-1);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
h1, h2, h3, .section-title, .card-title, .nav-logo { font-family: var(--font-title); text-transform: capitalize; }

/* ── GRID SYSTEM ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
}
@media (max-width: 768px) { .container { padding: 0 24px; } }

/* ── NAVIGATION ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(8,12,16,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 68px;
  display: flex; align-items: center;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto; padding: 0 40px;
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 1.1rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--white);
  display: flex; align-items: center; gap: 10px;
}
.nav-logo-mark {
  width: 28px; height: 28px;
  background: var(--teal);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
.nav-links {
  display: flex; align-items: center; gap: 8px;
  list-style: none;
}
.nav-links a {
  font-size: 0.82rem; font-weight: 500;
  color: var(--gray-2);
  padding: 6px 14px; border-radius: 4px;
  transition: color 0.15s;
  letter-spacing: 0.02em;
}
.nav-links a:hover { color: var(--white); }
.nav-cta {
  font-size: 0.82rem; font-weight: 600;
  color: var(--teal) !important;
  border: 1px solid var(--teal-border) !important;
  padding: 7px 18px !important;
  border-radius: 3px;
  transition: all 0.15s !important;
}
.nav-cta:hover {
  background: var(--teal-bg) !important;
  color: var(--white) !important;
}
.nav-hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  color: var(--gray-2); padding: 8px;
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: block; }
}

/* ── HERO ── */
.hero {
  min-height: auto;
  padding: 140px 0 100px;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  background: var(--black);
}
.hero-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,159,223,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,159,223,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
}
.hero-glow {
  position: absolute;
  top: -200px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 600px;
  background: radial-gradient(ellipse, rgba(0,159,223,0.06) 0%, transparent 65%);
  pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 1;
  max-width: var(--max-w); margin: 0 auto; padding: 0 40px;
  width: 100%;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 28px;
}
.hero-eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--teal);
}
.hero h1 {
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  max-width: 820px;
}
.hero h1 em {
  font-style: normal;
  color: var(--teal);
}
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.68);
  line-height: 1.75;
  max-width: 540px;
  margin-bottom: 48px;
}
.hero-actions {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.hero-stat-row {
  display: flex; gap: 48px; flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.hero-stat-label {
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--gray-3);
  margin-bottom: 6px;
}
.hero-stat-value {
  font-size: 1.5rem; font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

/* ── BUTTONS ── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--teal);
  color: var(--black) !important;
  font-size: 0.88rem; font-weight: 700;
  letter-spacing: 0.04em;
  padding: 13px 28px;
  border: none; border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary:hover { background: #18B7F2; transform: translateY(-1px); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent;
  color: var(--gray-1);
  font-size: 0.88rem; font-weight: 500;
  letter-spacing: 0.02em;
  padding: 13px 28px;
  border: 1px solid var(--border-mid);
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-ghost:hover { border-color: var(--gray-2); color: var(--white); }

/* ── SECTION HEADERS ── */
.section { padding: var(--section-v) 0; }
.section-eyebrow {
  font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.section-eyebrow::before {
  content: '';
  width: 20px; height: 1px;
  background: var(--teal);
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 20px;
}
.section-body {
  font-size: 1rem;
  color: rgba(255,255,255,0.62);
  line-height: 1.82;
  max-width: 560px;
}

/* ── DIVIDER ── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── BELIEF CARDS (horizontal line items) ── */
.belief-list { list-style: none; }
.belief-item {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.belief-item:first-child { border-top: 1px solid var(--border); }
.belief-number {
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--teal);
  padding-top: 4px;
  font-family: var(--font-mono);
}
.belief-title {
  font-size: 1.15rem; font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.belief-body {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.60);
  line-height: 1.75;
}

/* ── ARCHITECTURE DIAGRAM (pure CSS) ── */
.arch-diagram {
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 52px 48px;
  position: relative;
  overflow: hidden;
}
.arch-diagram::before {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(rgba(0,159,223,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,159,223,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
}
/* Glow behind Cordant layer */
.arch-diagram::after {
  content: '';
  position: absolute;
  top: 40px; left: 10%; right: 10%;
  height: 80px;
  background: radial-gradient(ellipse, rgba(0,159,223,0.10) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.arch-layer {
  position: relative; z-index: 1;
  display: flex; align-items: center; gap: 20px;
  padding: 16px 22px;
  border-radius: 6px;
  margin-bottom: 0;
}
.arch-layer-cordant {
  background: rgba(0,159,223,0.10);
  border: 1px solid var(--teal);
  box-shadow: 0 0 0 1px rgba(0,159,223,0.08), 0 4px 24px rgba(0,159,223,0.08);
  margin-bottom: 4px;
}
.arch-layer-infra {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  transition: border-color 0.2s, background 0.2s;
}
.arch-layer-infra:hover {
  background: rgba(255,255,255,0.04);
  border-color: var(--border-mid);
}
.arch-layer-label {
  font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  font-size: 0.78rem;
  min-width: 90px;
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.arch-layer-cordant .arch-layer-label {
  color: var(--teal);
  font-size: 0.7rem;
}
.arch-layer-items {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.arch-chip {
  font-size: 0.72rem; font-weight: 500;
  padding: 5px 13px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 3px;
  color: rgba(255,255,255,0.60);
  white-space: nowrap;
  font-family: var(--font-mono);
  transition: border-color 0.15s, color 0.15s;
}
.arch-chip:hover {
  border-color: rgba(255,255,255,0.18);
  color: var(--gray-1);
}
.arch-chip-teal {
  background: rgba(0,159,223,0.10);
  border-color: rgba(0,159,223,0.30);
  color: var(--teal);
  font-weight: 600;
}
.arch-chip-teal:hover {
  background: rgba(0,159,223,0.16);
  border-color: var(--teal);
}
.arch-connector {
  position: relative; z-index: 1;
  display: flex; align-items: center;
  gap: 0; padding: 0 0 0 112px; /* align with chips start */
  height: 32px;
}
.arch-connector-line {
  width: 1px; height: 100%;
  background: linear-gradient(to bottom, rgba(0,159,223,0.5), rgba(0,159,223,0.1));
  position: relative;
}
.arch-connector-line::after {
  content: '';
  position: absolute; bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 5px; height: 5px;
  background: var(--teal);
  border-radius: 50%;
  opacity: 0.6;
}

/* ── GRID CARDS ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.card {
  background: var(--dark-2);
  padding: 36px 32px;
  transition: background 0.2s;
}
.card:hover { background: var(--dark-3); }
.card-icon {
  width: 36px; height: 36px;
  color: var(--teal);
  margin-bottom: 20px;
}
.card-title {
  font-size: 1rem; font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.card-body {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.60);
  line-height: 1.7;
}

/* ── TWO-COLUMN ── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; gap: 48px; }
}

/* ── QUOTE / CALLOUT ── */
.callout {
  border-left: 2px solid var(--teal);
  padding: 28px 32px;
  background: var(--teal-bg);
  border-radius: 0 6px 6px 0;
  margin: 48px 0;
}
.callout-text {
  font-size: 1.1rem; font-weight: 500;
  color: var(--white);
  line-height: 1.65;
  letter-spacing: -0.01em;
}

/* ── TABLE ── */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.compare-table th {
  background: var(--dark-3);
  color: var(--gray-2);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.compare-table th:first-child { color: var(--teal); }
.compare-table td {
  padding: 14px 20px;
  color: var(--gray-2);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.6;
}
.compare-table td:first-child { color: var(--gray-1); font-weight: 500; }
.compare-table tr:last-child td { border-bottom: none; }

/* ── CTA BAND ── */
.cta-band {
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 0;
  text-align: center;
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(0,159,223,0.05) 0%, transparent 70%);
}
.cta-band-inner { position: relative; z-index: 1; }
.cta-band h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}
.cta-band p {
  font-size: 1rem;
  color: var(--gray-2);
  margin-bottom: 36px;
  max-width: 480px;
  margin-left: auto; margin-right: auto;
  line-height: 1.75;
}

/* ── FOOTER ── */
.footer {
  background: var(--dark-1);
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand-name {
  font-size: 0.95rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--white);
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 14px;
}
.footer-brand-desc {
  font-size: 0.82rem;
  color: var(--gray-3);
  line-height: 1.7;
}
.footer-col-title {
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--gray-3);
  margin-bottom: 16px;
}
.footer-col-links { list-style: none; }
.footer-col-links li { margin-bottom: 10px; }
.footer-col-links a {
  font-size: 0.82rem;
  color: var(--gray-2);
  transition: color 0.15s;
}
.footer-col-links a:hover { color: var(--white); }
.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.footer-legal {
  font-size: 0.75rem;
  color: var(--gray-3);
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ── TAGS ── */
.tag {
  display: inline-block;
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 2px;
  background: var(--dark-3);
  border: 1px solid var(--border);
  color: var(--gray-2);
}
.tag-teal {
  background: var(--teal-bg);
  border-color: var(--teal-border);
  color: var(--teal);
}

/* ── MONO LABELS ── */
.mono {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.03em;
}

/* ══════════════════════════════════════
   DEPTH SYSTEM — elevation & dimensionality
   ══════════════════════════════════════ */

/* Section alternation — slight elevation contrast */
.section { position: relative; }
.section::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

/* Hero — deeper background, stronger grid */
.hero {
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,159,223,0.05) 0%, transparent 60%),
              var(--black);
}
.hero-grid-bg {
  background-image:
    linear-gradient(rgba(0,159,223,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,159,223,0.06) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 50%, black 20%, transparent 100%);
}

/* Cards — layered shadow system */
.card {
  box-shadow: 0 1px 3px rgba(0,0,0,0.4), 0 4px 12px rgba(0,0,0,0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s;
}
.card:hover {
  transform: translateY(-4px) !important;
  box-shadow: 0 4px 8px rgba(0,0,0,0.5), 0 16px 40px rgba(0,0,0,0.35), 0 0 0 1px rgba(0,159,223,0.08);
}

/* Problem cards — lift on hover */
.prob-card {
  box-shadow: 0 1px 0 rgba(255,255,255,0.03) inset, 0 2px 8px rgba(0,0,0,0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s;
}
.prob-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05) inset, 0 8px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(0,159,223,0.12);
  z-index: 2;
}

/* Feature items */
.feat-item {
  box-shadow: 0 1px 0 rgba(255,255,255,0.03) inset;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s;
}
.feat-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3), 0 0 0 1px rgba(0,159,223,0.1);
}

/* Arch diagram — floating above the page */
.arch-diagram {
  box-shadow:
    0 0 0 1px rgba(0,159,223,0.12),
    0 8px 32px rgba(0,0,0,0.4),
    0 32px 80px rgba(0,0,0,0.3);
}

/* Section backgrounds — alternating depth planes */
.section[style*="background:var(--dark-1)"] {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03), inset 0 -1px 0 rgba(0,0,0,0.2);
}

/* How-steps — connected elevated panel */
.how-step {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04), 0 2px 8px rgba(0,0,0,0.2);
}

/* CTA band — deepest plane */
.cta-band {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04), inset 0 -1px 0 rgba(0,0,0,0.3);
}
.cta-band::before {
  background: radial-gradient(ellipse 50% 100% at 50% 50%, rgba(0,159,223,0.07) 0%, transparent 70%);
}

/* Resource cards */
.resource-card {
  box-shadow: 0 2px 8px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.02) inset;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.2s;
}
.resource-card:hover {
  transform: translateY(-5px) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(0,159,223,0.1);
}

/* Certainty cells */
.certainty-cell {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}

/* Buttons — tactile depth */
.btn-primary {
  box-shadow: 0 2px 0 rgba(0,0,0,0.3), 0 4px 16px rgba(0,159,223,0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s;
}
.btn-primary:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 4px 0 rgba(0,0,0,0.3), 0 8px 28px rgba(0,159,223,0.35) !important;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 1px 0 rgba(0,0,0,0.3), 0 2px 8px rgba(0,159,223,0.2);
}

.btn-ghost {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s, color 0.15s;
}
.btn-ghost:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.06);
}

/* Nav — elevated above everything */
.nav {
  box-shadow: 0 1px 0 rgba(255,255,255,0.04), 0 4px 24px rgba(0,0,0,0.4);
}

/* Scroll-triggered fade-up animation */
.depth-fade {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.depth-fade.visible {
  opacity: 1;
  transform: translateY(0);
}
.depth-fade:nth-child(2) { transition-delay: 0.08s; }
.depth-fade:nth-child(3) { transition-delay: 0.16s; }
.depth-fade:nth-child(4) { transition-delay: 0.24s; }
.depth-fade:nth-child(5) { transition-delay: 0.32s; }
.depth-fade:nth-child(6) { transition-delay: 0.40s; }

/* ── RESPONSIVE UTILITIES ── */
@media (max-width: 640px) {
  :root { --section-v: 72px; }
  .hero h1 { letter-spacing: -0.02em; }
  .hero-stat-row { gap: 32px; }
  .arch-diagram { padding: 24px; }
  .card-grid { grid-template-columns: 1fr; }
  .belief-item { grid-template-columns: 40px 1fr; gap: 20px; }
  .cta-band { padding: 56px 0; }
}