:root {
  /* Colors */
  --brand: #00C2A8;           /* Primary Teal */
  --brand-hover: #009E8A;     /* Darker Teal for hover */
  --brand-glow: rgba(0, 194, 168, 0.15);
  --brand-border: #1F4D42;    /* Dark Teal Border */
  
  --bg-main: #070F0D;         /* Dark Forest Slate */
  --bg-card-dark: #0D1A17;    /* Stats/Industries/Sample Card Background */
  --bg-card-light: #152820;   /* Use Case Card Background */
  
  --text-main: #F0EDE6;       /* Warm White/Beige */
  --text-muted: #9EA89F;      /* Soft Muted Green-Gray */
  --text-links: rgba(200, 198, 190, 0.7);
  
  /* Fonts */
  --font-heading: 'Geist', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  overflow-x: hidden;
}

::selection {
  background: var(--brand-glow);
  color: var(--text-main);
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

/* TYPOGRAPHY */
h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--text-main);
  margin-bottom: 1.5rem;
}
@media (min-width: 1024px) {
  h1 {
    font-size: 64px;
  }
}

h2, .section-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--text-main);
  margin-bottom: 3rem;
  max-width: 48rem;
}
@media (min-width: 768px) {
  h2, .section-title {
    font-size: 40px;
  }
}

h3, h4 {
  font-family: var(--font-heading);
  letter-spacing: -0.01em;
}

p {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
}

.text-brand { color: var(--brand); }
.text-muted { color: var(--text-muted); }
.text-light { color: var(--text-main); }
.mb-sm { margin-bottom: 0.5rem; }

/* LAYOUT */
.section {
  padding: 5rem 1.5rem;
  max-width: 80rem;
  margin: 0 auto;
}
@media (min-width: 768px) {
  .section { padding: 6rem 2rem; }
}
.section-container {
  width: 100%;
}
.border-top {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.25rem;
  background-color: var(--brand);
  color: #050F0D;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  transition: background-color 0.2s;
  cursor: pointer;
  border: none;
}
.btn-primary:hover {
  background-color: var(--brand-hover);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.25rem;
  background-color: transparent;
  color: var(--text-main);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 14px;
  border: 1px solid rgba(200, 198, 190, 0.3);
  transition: all 0.2s;
}
.btn-outline:hover {
  border-color: rgba(200, 198, 190, 0.6);
  color: #fff;
  background-color: rgba(255, 255, 255, 0.02);
}

/* NAVIGATION */
.navbar {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 50;
  background-color: #070F0D;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 13px;
  color: var(--text-main);
  letter-spacing: 0.1em;
}
.logo-img {
  height: 24px;
  width: auto;
  filter: invert(1) sepia(1) saturate(5) hue-rotate(130deg) brightness(1.2);
  mix-blend-mode: screen;
}
.nav-links {
  display: none;
  align-items: center;
  gap: 2rem;
}
@media (min-width: 768px) {
  .nav-links { display: flex; }
}
.nav-links a {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 12px;
  color: var(--text-links);
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--brand-hover);
}
.nav-btn {
  color: var(--brand);
  border: 1px solid var(--brand);
  background-color: transparent;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 11px;
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
}
.nav-btn:hover {
  background-color: var(--brand);
  color: #050F0D;
}

/* HERO SECTION */
.hero {
  padding-top: 8rem;
  padding-bottom: 5rem;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 4rem; }
}
.eyebrow {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brand);
  margin-bottom: 1rem;
  text-transform: uppercase;
}
.hero-desc {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.hero-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 0.5rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background-color: #000;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}
.recording-badge {
  position: absolute;
  top: 1rem; left: 1rem;
  z-index: 10;
  background-color: rgba(0,0,0,0.6);
  color: #fff;
  font-size: 0.5625rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  padding: 0.25rem 0.625rem;
  border-radius: 0.25rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  text-transform: uppercase;
}
.camera-feed {
  width: 100%; height: 100%;
  background-image: url('hero-feed-compressed.gif');
  background-size: cover;
  background-position: center;
  opacity: 0.9;
  position: relative;
}
.camera-feed::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7, 15, 13, 0.5), transparent);
}

/* STATS BAR (METRICS GRID) */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  background-color: var(--bg-card-dark);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 0.5rem;
  overflow: hidden;
  margin-bottom: 2rem;
}
@media (min-width: 768px) {
  .metrics-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.metric-card {
  padding: 1.5rem;
  text-align: center;
  background: transparent;
  border: none;
  box-shadow: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background-color 0.2s;
}
.metric-card:nth-child(even) {
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}
@media (min-width: 768px) {
  .metric-card {
    border-bottom: none;
  }
  .metric-card:not(:first-child) {
    border-left: 1px solid rgba(255, 255, 255, 0.06);
  }
}
.metric-value {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 28px;
  color: var(--text-main);
  line-height: 1.1;
  text-shadow: none;
}
.metric-label {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 10px;
  color: rgba(200, 198, 190, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.5rem;
}

/* COMMON SECTION STYLES */
.section-number {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

/* SECTION 01: EMPOWERING PHYSICAL AI */
.challenge-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .challenge-grid { grid-template-columns: 1fr 1fr; }
}
.challenge-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.col-title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.list-card {
  padding: 1.25rem;
  border-radius: 0.25rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.gap-card {
  border: 0.5px solid var(--brand-border);
  background-color: var(--bg-card-dark);
}
.answer-card {
  border: 0.5px solid var(--brand-border);
  background-color: var(--bg-card-dark);
}
.list-icon {
  font-weight: 700;
  font-size: 1.125rem;
  margin-top: -0.125rem;
}

/* SECTION 02: SPECS */
.specs-table {
  display: grid;
  grid-template-columns: 1fr;
  border: 0.5px solid var(--brand-border);
  background-color: var(--bg-card-dark);
  border-radius: 0.5rem;
  overflow: hidden;
}
@media (min-width: 768px) {
  .specs-table { grid-template-columns: repeat(3, 1fr); }
  .specs-col { border-right: 0.5px solid var(--brand-border); }
  .specs-col:last-child { border-right: none; }
}
@media (max-width: 767px) {
  .specs-col { border-bottom: 0.5px solid var(--brand-border); }
  .specs-col:last-child { border-bottom: none; }
}
.specs-header {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 1.25rem;
  border-bottom: 0.5px solid var(--brand-border);
  background-color: rgba(7, 15, 13, 0.3);
}
.specs-rows {
  display: flex;
  flex-direction: column;
}
.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 0.5px solid rgba(31, 77, 66, 0.4);
}
.spec-row:last-child {
  border-bottom: none;
}
.spec-row span {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 14px;
  color: var(--text-muted);
}
.spec-row strong {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 14px;
  color: var(--text-main);
}

/* SECTION 03: INDUSTRIES */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (min-width: 640px) { .industries-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .industries-grid { grid-template-columns: repeat(5, 1fr); } }
.industry-card {
  background-color: var(--bg-card-dark);
  border: 0.5px solid var(--brand-border);
  padding: 1.25rem;
  border-radius: 0.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 7rem;
  transition: border-color 0.2s;
}
.industry-card:hover {
  border-color: var(--brand);
}
.industry-number {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11px;
  color: var(--brand);
}
.industry-name {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15px;
  color: var(--text-main);
}

/* SECTION 04: USE CASES */
.usecases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 1024px) {
  .usecases-grid { grid-template-columns: 2fr 1fr; }
}
.usecases-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 768px) {
  .usecases-list { grid-template-columns: 1fr 1fr; }
}
.usecase-card {
  background-color: var(--bg-card-light);
  border: 0.5px solid var(--brand-border);
  padding: 1.5rem;
  border-radius: 0.5rem;
  display: flex;
  flex-direction: column;
  min-height: 10rem;
}
.usecase-number {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 10px;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.usecase-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}
.usecase-desc {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: auto;
}
.why-card {
  border: 0.5px solid var(--brand-border);
  background-color: var(--bg-card-light);
  padding: 1.5rem;
  border-radius: 0.5rem;
}
.why-title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.why-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 17px;
  font-weight: 400;
  color: var(--text-muted);
}
.why-list li {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}
.why-list li span {
  color: var(--brand);
  font-size: 1rem;
}

/* SECTION 05: SAMPLE DATA */
.section-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
}
.samples-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .samples-grid { grid-template-columns: 1fr 1fr; }
}
.sample-card {
  background-color: var(--bg-card-dark);
  border: 0.5px solid var(--brand-border);
  padding: 2rem;
  border-radius: 0.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 13.75rem;
  position: relative;
}
.sample-watermark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  color: var(--brand);
  background: rgba(0, 194, 168, 0.1);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
}
.sample-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}
.sample-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 17px;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}
.sample-desc {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 24rem;
  margin-bottom: 1.5rem;
}
.sample-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13px;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  align-self: flex-start;
}
.sample-link:hover {
  color: var(--brand-hover);
}

/* CONTACT SECTION */
#contact {
  background-color: var(--bg-card-dark);
}
.contact-card {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 4rem 1.5rem;
  text-align: center;
  max-width: 56rem;
  margin: 0 auto;
}
.contact-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.contact-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 32px;
  color: var(--text-main);
  margin-bottom: 1rem;
}
@media (min-width: 768px) {
  .contact-title { font-size: 36px; }
}
.contact-desc em {
  font-family: var(--font-body);
  font-style: italic;
  font-weight: 400;
  font-size: 16px;
  color: var(--text-muted);
}
.contact-info-block {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}
.contact-detail-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 18px;
  color: var(--brand);
  transition: color 0.2s;
}
.contact-detail-link:hover {
  color: var(--brand-hover);
}
.contact-icon {
  color: var(--brand);
}

/* FOOTER */
.footer {
  background-color: #070F0D;
  padding: 2rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-container {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
@media (min-width: 640px) {
  .footer-container { flex-direction: row; }
}
.footer-left {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-img-footer {
  height: 18px;
  width: auto;
  filter: invert(1) sepia(1) saturate(5) hue-rotate(130deg) brightness(1.2);
  mix-blend-mode: screen;
}
.footer-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.footer-tagline {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 11px;
  color: #1F4D42;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-divider {
  color: rgba(255, 255, 255, 0.06);
}
.footer-phone {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 11px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-phone:hover {
  color: var(--brand-hover);
}