@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=Playfair+Display:ital,wght@0,700;0,900;1,700&display=swap');

:root {
  /* Core Monochrome Palette */
  --bg-color: #080808;
  --surface-color: #0F0F10;
  --text-primary: #FFFFFF;
  --text-secondary: #A1A1A6;
  --text-muted: #6E6E73;
  --accent-color: #FFFFFF;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-dim: rgba(255, 255, 255, 0.05);
  
  /* Typography */
  --font-display: 'Playfair Display', serif;
  --font-sans: 'Inter', sans-serif;
  
  /* Spacing & Layout */
  --section-padding: clamp(4rem, 10vw, 10rem);
  --container-width: 1200px;
  --transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  color: var(--text-primary);
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60vw;
  height: 60vh;
  background: url('assets/logo.png') no-repeat center;
  background-size: contain;
  opacity: 0.04;
  z-index: -1;
  pointer-events: none;
  filter: grayscale(1);
}

/* --- Layout Components --- */

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* --- Navigation --- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 2rem;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-smooth);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(8, 8, 8, 0.9);
  backdrop-filter: blur(20px);
  padding: 1rem 2rem;
  border-bottom-color: var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-copy strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}

.brand-copy small {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.2em;
}

.nav-links {
  display: flex;
  gap: 3rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color 0.3s ease;
}

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

.header-action {
  background: var(--text-primary);
  color: var(--bg-color);
  border: none;
  padding: 0.8rem 1.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.header-action:hover {
  transform: scale(1.05);
  background: var(--text-secondary);
}

/* --- Hero Section --- */

.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0 2rem;
}

.agent-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 900px;
  text-align: center;
}

.eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5em;
  color: var(--text-muted);
  margin-bottom: 2rem;
  display: block;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 1;
  margin-bottom: 2.5rem;
  font-weight: 700;
}

.hero-copy {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 3rem;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

.btn {
  padding: 1.2rem 2.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-decoration: none;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-color);
}

.btn-primary:hover {
  background: var(--text-secondary);
}

.btn-secondary {
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--border-dim);
}

/* --- Laboratory Section --- */

.agents-section {
  padding: var(--section-padding) 2rem;
  background: transparent;
  border-top: 1px solid var(--border-dim);
}

.section-head {
  text-align: center;
  margin-bottom: 6rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
}

.agent-lab {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.lab-copy h2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  margin-bottom: 2rem;
  font-style: italic;
}

.lab-copy p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.agent-stack {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.agent-stack article {
  padding: 2.5rem;
  border: 1px solid var(--border-dim);
  transition: var(--transition-smooth);
}

.agent-stack article:hover {
  border-color: var(--text-primary);
}

.agent-stack i {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.agent-stack h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.agent-stack p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- Projects Section --- */

.projects-section {
  padding: var(--section-padding) 2rem;
}

.project-list {
  display: flex;
  flex-direction: column;
  gap: 8rem;
}

.case-study {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: flex-start;
  padding-bottom: 8rem;
  border-bottom: 1px solid var(--border-dim);
}

.case-study:last-child {
  border-bottom: none;
}

.case-header {
  position: sticky;
  top: 100px;
}

.case-index {
  font-family: var(--font-display);
  font-size: 5rem;
  opacity: 0.1;
  margin-bottom: -1rem;
}

.case-tag {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.case-title-area h3 {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1.1;
  margin-bottom: 2rem;
}

.case-body h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-dim);
  padding-bottom: 0.5rem;
}

.case-summary p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-weight: 300;
}

.case-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.detail-item strong {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.detail-item span {
  font-size: 0.9rem;
}

.case-module-list ul {
  list-style: none;
}

.case-module-list li {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.case-module-list i {
  width: 16px;
  height: 16px;
  color: var(--text-primary);
}

.case-footer {
  margin-top: 3rem;
}

/* --- Contact Section --- */

.contact-section {
  padding: var(--section-padding) 2rem;
  background: transparent;
}

.contact-card {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  padding: 6rem;
  border: 1px solid var(--border-color);
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: 4rem;
  margin-bottom: 2rem;
  line-height: 1;
}

.contact-info p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  justify-content: center;
}

.contact-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.contact-item i {
  margin-top: 0.2rem;
}

.contact-item strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.contact-item span {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* --- Footer --- */

footer {
  padding: 6rem 2rem 3rem;
  border-top: 1px solid var(--border-dim);
}

.footer-grid {
  max-width: var(--container-width);
  margin: 0 auto 4rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
}

.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  letter-spacing: 0.2em;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-nav h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.footer-nav a {
  display: block;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 3rem;
  border-top: 1px solid var(--border-dim);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* --- Responsive --- */

@media (max-width: 1024px) {
  .agent-lab, .case-study, .contact-card {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .contact-card {
    padding: 3rem;
  }
  
  .case-header {
    position: relative;
    top: 0;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero h1 {
    font-size: 3.5rem;
  }
  
  .section-head h2 {
    font-size: 2.5rem;
  }
  
  .agent-stack {
    grid-template-columns: 1fr;
  }
}