/* Veridian Nexum — Main Stylesheet */
/* Aesthetic direction: Institutional dark. Think Palantir meets a white-shoe law firm. */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Josefin+Sans:wght@200;300;400&display=swap');

/* ── Variables ──────────────────────────────────────────────── */
:root {
  --black:       #0d1117;
  --deep:        #111827;
  --surface:     #161d2e;
  --panel:       #1a2438;
  --border:      #1e2d45;
  --border-lt:   #243552;
  --muted:       #6b7a99;
  --subtle:      #a8b4cc;
  --body:        #cdd5e0;
  --heading:     #e8edf5;
  --white:       #f0f4fa;
  --gold:        #b8976a;
  --gold-lt:     #d4b48a;
  --gold-dim:    #7a6344;
  --accent:      #4a7c8a;
  --accent-lt:   #5d9aaa;

  --font-serif:  'Cormorant Garamond', Georgia, serif;
  --font-sans:   'Josefin Sans', 'Helvetica Neue', sans-serif;

  --max-w:       1200px;
  --section-pad: 120px;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--black);
  color: var(--body);
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 17px;
  letter-spacing: 0.02em;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ── Grain overlay ──────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

/* ── Utility ────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 48px;
}
.label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
}
.rule {
  width: 40px;
  height: 1px;
  background: var(--gold-dim);
  margin-bottom: 32px;
}
.serif { font-family: var(--font-serif); }

/* ── Navigation ─────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 28px 0;
  transition: padding 0.4s ease, background 0.4s ease;
}
nav.scrolled {
  padding: 18px 0;
  background: rgba(10,10,11,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.nav-wordmark {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.nav-wordmark-top {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--white);
  line-height: 1;
}
.nav-wordmark-sub {
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-dim);
  line-height: 1;
}
.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}
.nav-links a {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--subtle);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }
.nav-cta {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold-dim);
  padding: 9px 22px;
  transition: all 0.25s;
}
.nav-cta:hover {
  background: var(--gold);
  color: var(--black);
}

/* ── Hero ───────────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 140px 0 80px;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(184,151,106,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184,151,106,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 0%, transparent 100%);
}
.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(ellipse, rgba(74,124,138,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}
.hero-eyebrow-line {
  width: 48px;
  height: 1px;
  background: var(--gold-dim);
}
.hero-h1 {
  font-family: var(--font-serif);
  font-size: clamp(52px, 6vw, 84px);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 32px;
}
.hero-h1 em {
  font-style: italic;
  color: var(--gold-lt);
}
.hero-tagline {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--gold);
  margin-bottom: 24px;
  line-height: 1.4;
}
.hero-sub {
  font-size: 17px;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--subtle);
  line-height: 1.9;
  max-width: 560px;
  margin-bottom: 56px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 32px;
}
.btn-primary {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--gold);
  padding: 14px 36px;
  display: inline-block;
  transition: all 0.25s;
}
.btn-primary:hover { background: var(--gold-lt); }
.btn-ghost {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--subtle);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: color 0.25s;
}
.btn-ghost:hover { color: var(--white); }
.btn-ghost span { font-size: 18px; }
.hero-scroll-hint {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.35;
}
.hero-scroll-hint-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--gold));
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ── Section shared ─────────────────────────────────────────── */
section { padding: var(--section-pad) 0; }
.section-header {
  margin-bottom: 72px;
}
.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(36px, 4vw, 54px);
  font-weight: 300;
  color: var(--heading);
  line-height: 1.15;
  margin-top: 20px;
}
.section-header h2 em { font-style: italic; color: var(--gold-lt); }
.section-header p {
  font-size: 16px;
  color: var(--subtle);
  max-width: 480px;
  margin-top: 20px;
  line-height: 1.9;
}

/* ── Platform modules ───────────────────────────────────────── */
#platform {
  background: var(--deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.modules-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
}
.module-card {
  background: var(--surface);
  padding: 56px 48px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.module-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.module-card:hover { background: var(--panel); }
.module-card:hover::before { opacity: 1; }
.module-number {
  font-family: var(--font-serif);
  font-size: 72px;
  font-weight: 300;
  color: var(--border-lt);
  line-height: 1;
  margin-bottom: 32px;
  font-style: italic;
}
.module-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 28px;
  color: var(--gold-dim);
}
.module-card h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 400;
  color: var(--heading);
  margin-bottom: 8px;
}
.module-tagline {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
}
.module-desc {
  font-size: 16px;
  color: var(--subtle);
  line-height: 1.9;
  margin-bottom: 36px;
}
.module-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.module-features li {
  font-size: 15px;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--body);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.module-features li::before {
  content: '—';
  color: var(--gold-dim);
  flex-shrink: 0;
}

/* ── Credibility strip ──────────────────────────────────────── */
#credibility {
  padding: 80px 0;
  background: var(--black);
}
.cred-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.cred-item {
  background: var(--black);
  padding: 48px 40px;
  text-align: center;
}
.cred-number {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 300;
  font-style: italic;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 12px;
}
.cred-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── About ──────────────────────────────────────────────────── */
#about {
  background: var(--deep);
  border-top: 1px solid var(--border);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 96px;
  align-items: start;
}
.about-left h2 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 3.5vw, 48px);
  font-weight: 300;
  color: var(--heading);
  line-height: 1.2;
}
.about-left h2 em { font-style: italic; color: var(--gold-lt); }
.about-right p {
  font-size: 16px;
  color: var(--subtle);
  line-height: 2;
  margin-bottom: 24px;
}
.about-right p:last-child { margin-bottom: 0; }
.about-right strong { color: var(--body); font-weight: 400; }

/* ── Contact ────────────────────────────────────────────────── */
#contact {
  background: var(--black);
  border-top: 1px solid var(--border);
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 96px;
  align-items: start;
}
.contact-left h2 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 3.5vw, 48px);
  font-weight: 300;
  color: var(--heading);
  line-height: 1.2;
  margin-bottom: 24px;
}
.contact-left p {
  font-size: 16px;
  color: var(--subtle);
  line-height: 1.9;
  margin-bottom: 40px;
}
.contact-email-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.contact-email-label {
  font-size: 9px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-email-addr {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--gold);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}
.contact-email-addr:hover { color: var(--gold-lt); }

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-label {
  font-size: 9px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
}
.form-input, .form-select, .form-textarea {
  background: var(--surface);
  border: 1px solid var(--border-lt);
  color: var(--body);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 300;
  letter-spacing: 0.05em;
  padding: 14px 18px;
  transition: border-color 0.2s;
  outline: none;
  width: 100%;
  appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--gold-dim);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-input::placeholder, .form-textarea::placeholder { color: var(--muted); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-submit {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--gold);
  border: none;
  padding: 15px 32px;
  cursor: pointer;
  transition: background 0.25s;
  align-self: flex-start;
}
.form-submit:hover { background: var(--gold-lt); }

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  background: var(--black);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-logo svg { width: 24px; height: 24px; }
.footer-wordmark {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.footer-copy {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.footer-links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.footer-links a {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--subtle); }

/* ── Page load animations ───────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in {
  opacity: 0;
  transition: opacity 0.9s ease;
}
.fade-in.visible { opacity: 1; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .container { padding: 0 28px; }
  :root { --section-pad: 80px; }
  .modules-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .contact-inner { grid-template-columns: 1fr; gap: 56px; }
  .cred-inner { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 24px; text-align: center; }
  .nav-links { display: none; }
}
@media (max-width: 600px) {
  .hero-h1 { font-size: 42px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .module-card { padding: 40px 28px; }
}

/* ── IntellForge platform section additions ─────────────────── */
.intellforge-intro {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 400;
  color: var(--gold);
  letter-spacing: 0.03em;
  margin-top: 8px;
  margin-bottom: 16px;
}
.intellforge-desc {
  font-size: 16px;
  color: var(--subtle);
  line-height: 1.9;
  max-width: 680px;
  margin-bottom: 0;
}
.module-label {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 10px;
}
.module-note {
  margin-top: 24px;
  font-size: 13px;
  font-style: italic;
  color: var(--gold-dim);
  letter-spacing: 0.05em;
}

/* ── Use Cases ──────────────────────────────────────────────── */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
}
.use-case-card {
  background: var(--surface);
  padding: 48px 36px;
  transition: background 0.3s;
  position: relative;
}
.use-case-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.use-case-card:hover { background: var(--panel); }
.use-case-card:hover::before { opacity: 1; }
.use-case-icon {
  width: 44px;
  height: 44px;
  color: var(--gold-dim);
  margin-bottom: 24px;
}
.use-case-label {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}
.use-case-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  color: var(--heading);
  margin-bottom: 16px;
  line-height: 1.3;
}
.use-case-desc {
  font-size: 15px;
  color: var(--subtle);
  line-height: 1.9;
  margin-bottom: 24px;
}
.use-case-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.use-case-features li {
  font-size: 13px;
  color: var(--body);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.use-case-features li::before {
  content: '—';
  color: var(--gold-dim);
  flex-shrink: 0;
}

/* ── How It Works ───────────────────────────────────────────── */
#how-it-works {
  background: var(--deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
}
.step-item {
  background: var(--surface);
  padding: 40px 36px;
  display: flex;
  gap: 28px;
  align-items: flex-start;
  transition: background 0.3s;
}
.step-item:hover { background: var(--panel); }
.step-number {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 300;
  font-style: italic;
  color: var(--border-lt);
  line-height: 1;
  flex-shrink: 0;
  width: 52px;
}
.step-content h4 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 400;
  color: var(--heading);
  margin-bottom: 10px;
  line-height: 1.3;
}
.step-content p {
  font-size: 14px;
  color: var(--subtle);
  line-height: 1.9;
}

/* ── Partner section ────────────────────────────────────────── */
.partner-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.partner-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 2px solid var(--gold-dim);
  padding: 28px 32px;
}
.partner-card-label {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 4px;
}

/* ── Responsive additions ───────────────────────────────────── */
@media (max-width: 900px) {
  .use-cases-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
}