/* Signum Verum — Artistic & Professional Theme */
:root {
  /* Color Palette - Deep, rich, and metallic */
  --bg: #060709;
  --bg-elevated: #0d0f12;
  --bg-alt: #0a0c0e;
  --surface: #121418;
  --surface-hover: #181b21;
  --text: #f4f5f6;
  --text-muted: #9ba1ab;
  --text-faint: #636973;
  --accent: #d8c280; /* Brighter, elegant champagne gold */
  --accent-soft: rgba(216, 194, 128, 0.1);
  --accent-dim: #bba45a;
  --border: rgba(255, 255, 255, 0.06);
  --border-soft: rgba(255, 255, 255, 0.03);
  --positive: #82c982;
  --positive-soft: rgba(130, 201, 130, 0.1);
  --negative: #d87a7a;
  --negative-soft: rgba(216, 122, 122, 0.1);
  
  /* Typography */
  --font-serif: "Instrument Serif", Georgia, serif;
  --font-sans: "DM Sans", system-ui, sans-serif;
  
  /* Spacing Scale - More dramatic */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space: 1.5rem;
  --space-md: 2.5rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 8rem;
  --space-3xl: 12rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 16px;
  
  /* Transitions & Shadows */
  --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.6);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 100px 100px;
  background-position: center top;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* Removed noise texture overlay for cleaner polygon background */

.container {
  width: 100%;
  max-width: 76rem;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  position: relative;
}

/* Architectural vertical lines inside container */
.container::before, .container::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border-soft);
  z-index: -1;
  pointer-events: none;
}
.container::before { left: var(--space-lg); }
.container::after { right: var(--space-lg); }

/* Animation Classes */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Typography Basics */
h1, h2, h3, h4 {
  margin: 0;
  font-weight: 400;
}

i, em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}

/* Section label (eyebrow) */
.section-label {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--accent-soft);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space) var(--space-lg);
  background: rgba(6, 7, 9, 0.7);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.site-header.scrolled {
  padding: var(--space-sm) var(--space-lg);
  background: rgba(6, 7, 9, 0.85);
  border-bottom-color: var(--border);
}

.header-inner {
  max-width: 76rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.logo:hover {
  color: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

.nav a:hover {
  color: var(--text);
}

.nav-cta {
  color: var(--bg) !important;
  background: var(--accent);
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  font-weight: 500 !important;
}
.nav-cta:hover {
  background: var(--accent-dim);
  color: var(--bg) !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(100px + var(--space-xl)) 0 var(--space-3xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: -20%;
  left: -10%;
  width: 120%;
  height: 140%;
  background: 
    radial-gradient(circle at 75% 30%, rgba(216, 194, 128, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 25% 80%, rgba(216, 194, 128, 0.03) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: var(--space-2xl);
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--space);
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 6.5vw, 5.5rem);
  font-weight: 400;
  line-height: 1.05;
  margin: 0 0 var(--space);
  color: var(--text);
  letter-spacing: -0.03em;
}

.hero-subheadline {
  font-family: var(--font-sans);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 32ch;
  margin: 0 0 var(--space);
  font-weight: 300;
}

.hero-supporting {
  font-size: 1rem;
  color: var(--text-faint);
  max-width: 38ch;
  margin: 0 0 var(--space-md);
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1.125rem 2.25rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: 100px; /* Pill shape for artistic feel */
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
  border: 1px solid var(--text);
}
.btn-primary:hover {
  background: transparent;
  color: var(--text);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--text);
  background: rgba(255,255,255,0.03);
}

.hero-visual {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Artistic Video Styling */
.hero-video-wrapper {
  width: 100%;
  max-width: 480px;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

/* Add a glowing orb behind the video */
.hero-video-wrapper::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  z-index: 2;
}

.hero-video {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  z-index: 1;
}

.hero-video-logo {
  position: absolute;
  bottom: 1%;
  right: 2%;
  width: 10%;
  height: auto;
  z-index: 5;
  pointer-events: none;
  opacity: 0.9;
  filter: invert(1) drop-shadow(0 2px 6px rgba(0, 0, 0, 0.5));
}

/* Trust bar */
.trust-bar {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.trust-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--surface), transparent);
  opacity: 0.3;
  z-index: -1;
}

.trust-bar .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.trust-bar-lead {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3vw, 2.5rem);
  margin: 0;
  color: var(--text);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.trust-bar-text {
  color: var(--text-muted);
  max-width: 45ch;
  margin: 0;
  font-size: 1.125rem;
  font-weight: 300;
}

/* Sections */
.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section.alt {
  background: linear-gradient(180deg, transparent, var(--surface) 20%, var(--surface) 80%, transparent);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 5vw, 4.5rem);
  font-weight: 400;
  margin: 0 0 var(--space-2xl);
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

/* How it works - Redesigned as an open list */
.how-it-works .steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--border);
}

.step {
  display: grid;
  grid-template-columns: 100px 1fr 2fr;
  gap: var(--space-md);
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
  transition: background var(--transition);
}
.step:hover {
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.02), transparent);
}

.step-num {
  font-family: var(--font-serif);
  font-size: 4rem;
  line-height: 0.8;
  color: var(--accent);
  opacity: 0.5;
}

.step h3 {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 400;
  margin: 0;
  color: var(--text);
}

.step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.6;
  max-width: 40ch;
}

.section-note {
  margin: var(--space-xl) 0 0;
  color: var(--text-faint);
  font-size: 0.9375rem;
  max-width: 60ch;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}

/* Missing link */
.missing-link .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.missing-link .section-title {
  max-width: 12ch;
  margin-bottom: var(--space-lg);
}

.missing-link-content {
  display: flex;
  flex-direction: column;
  gap: var(--space);
}

.missing-link-intro,
.missing-link-problem,
.missing-link-solution {
  color: var(--text-muted);
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.6;
  margin: 0;
}

.missing-link-list {
  margin: 0;
  padding-left: 1.5rem;
  color: var(--text);
  font-size: 1.125rem;
  font-family: var(--font-serif);
  font-style: italic;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.missing-link-list li::marker {
  color: var(--accent);
}

.pull-quote {
  margin: var(--space-2xl) 0 0;
  padding: 0;
  border: none;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-style: normal; /* The actual quote text can have embedded <i> tags */
  line-height: 1.2;
  color: var(--accent);
  background: transparent;
  max-width: 25ch;
}

/* Why fall short */
.comparison-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.card {
  padding: var(--space-lg);
  border-top: 1px solid var(--border);
  position: relative;
  background: transparent;
  transition: all var(--transition);
}

.card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width var(--transition);
}

.card:hover::before {
  width: 100%;
}

.card-positive {
  grid-column: span 3;
  border-top-color: var(--positive);
  margin-top: var(--space-md);
}
.card-positive::before {
  background: var(--positive);
}

.card h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  margin: 0 0 var(--space);
  color: var(--text);
}
.card-positive h3 {
  color: var(--positive);
  font-size: 2.5rem;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.6;
}

/* Why different - Masonry feel */
.different-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.different-item {
  padding: var(--space-lg);
  border-left: 1px solid var(--border);
  background: transparent;
}

.different-item h3 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-style: italic;
  margin: 0 0 var(--space-sm);
  color: var(--accent);
}

.different-item p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.6;
}

/* Precision */
.precision .container {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.precision .section-title {
  margin-bottom: var(--space);
}

.precision-lead {
  font-size: 1.25rem;
  font-weight: 300;
  margin: 0 0 var(--space-md);
  color: var(--text);
}

.precision ul {
  margin: 0;
  padding-left: 1.5rem;
  color: var(--text-muted);
  font-size: 1.125rem;
  font-weight: 300;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Production */
.production-lead {
  font-size: 1.25rem;
  font-weight: 300;
  margin: 0 0 var(--space-md);
  color: var(--text);
  max-width: 50ch;
}

.production-points {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space);
  margin: var(--space-xl) 0 0;
  padding: 0;
  list-style: none;
}

.production-points li {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-muted);
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
}

.production-points li::before {
  content: "✦ ";
  color: var(--accent);
  margin-right: 0.5em;
  font-size: 0.8em;
}

/* Use cases */
.use-cases-grid {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}

.use-case {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
}

.use-case h3 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  margin: 0;
  color: var(--text);
}

.use-case p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.6;
  max-width: 45ch;
}

/* For whom */
.for-whom .container {
  text-align: center;
}
.for-whom .section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin-bottom: var(--space);
}

.for-whom-intro {
  margin: 0 0 var(--space-xl);
  color: var(--text-faint);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.for-whom-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  list-style: none;
}

.for-whom-list li {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  color: var(--text-muted);
  font-style: italic;
  transition: color var(--transition);
}
.for-whom-list li:hover {
  color: var(--accent);
}

/* Provenance */
.provenance p {
  color: var(--text-muted);
  max-width: 45ch;
  margin: 0 0 var(--space);
  font-size: 1.25rem;
  font-weight: 300;
}

.provenance-close {
  margin: var(--space-2xl) 0 0;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--accent);
  font-weight: 400 !important;
}
.provenance-close strong {
  font-weight: 400;
}

/* Comparison table */
.comparison-table .table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: var(--space-lg) var(--space-xl);
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.875rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

td {
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1.125rem;
  font-weight: 300;
  width: 50%;
}

tr:last-child td {
  border-bottom: none;
}

td:first-child {
  border-right: 1px solid var(--border);
  color: var(--text-faint);
}

td:last-child {
  color: var(--positive);
}

/* Pilot */
.pilot {
  padding: var(--space-3xl) 0;
  text-align: center;
  position: relative;
}

.pilot::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at center, var(--surface) 0%, transparent 70%);
  z-index: -1;
}

.pilot-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin: 0 auto var(--space-md);
  color: var(--text);
  line-height: 1.1;
  max-width: 20ch;
}

.pilot-text {
  color: var(--text-muted);
  margin: 0 auto var(--space-xl);
  max-width: 40ch;
  font-size: 1.125rem;
  font-weight: 300;
}

.pilot-ctas {
  display: flex;
  justify-content: center;
  gap: var(--space);
}

/* About snippet */
.about-snippet {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.about-snippet p {
  color: var(--text-faint);
  max-width: 50ch;
  margin: 0 auto var(--space);
  font-size: 0.9375rem;
}

/* Footer */
.site-footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--space-xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-brand strong {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--text);
  font-weight: 400;
}

.footer-brand span {
  font-size: 0.875rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-email {
  color: var(--accent);
  text-decoration: none;
  font-size: 1.25rem;
  font-family: var(--font-serif);
  font-style: italic;
  transition: color var(--transition);
  display: block;
  margin-bottom: var(--space-md);
}
.footer-email:hover {
  color: var(--text);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition);
}
.footer-links a:hover {
  color: var(--text);
}

/* Mobile */
@media (max-width: 900px) {
  .hero {
    padding-top: calc(80px + var(--space-2xl));
  }
  
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-supporting {
    border-left: none;
    padding-left: 0;
    margin: 0 auto var(--space-lg);
  }
  
  .hero-subheadline {
    margin: 0 auto var(--space);
  }

  .hero-ctas {
    justify-content: center;
  }

  .hero-video-wrapper {
    margin: 0 auto;
  }

  .trust-bar .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space);
  }
  .trust-bar-text {
    margin: 0 auto;
  }
  
  .step {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    text-align: center;
  }
  .step-num {
    margin: 0 auto;
  }
  .step p {
    margin: 0 auto;
  }
  
  .missing-link .container, .precision .container {
    grid-template-columns: 1fr;
  }
  
  .comparison-cards {
    grid-template-columns: 1fr;
  }
  .card-positive {
    grid-column: 1;
  }

  .different-grid {
    grid-template-columns: 1fr;
  }

  .use-case {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  
  th, td {
    padding: var(--space) var(--space-sm);
    font-size: 0.9375rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-xl);
  }
  .footer-brand {
    align-items: center;
  }
  .footer-links {
    justify-content: center;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(6, 7, 9, 0.95);
    backdrop-filter: blur(24px);
    flex-direction: column;
    padding: var(--space-xl) var(--space-lg);
    border-bottom: 1px solid var(--border);
  }
  .nav.nav-open {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
}

@media (max-width: 600px) {
  .hero-ctas {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
  .pilot-ctas {
    flex-direction: column;
  }
  .section {
    padding: var(--space-2xl) 0;
  }
}