@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&display=swap');

:root {
  --bg-color: #0d0d0f;
  --bg-secondary: #161619;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a5;
  --accent-color: #00E5FF;
  --accent-hover: #00b3cc;
  --font-family: 'Inter', sans-serif;
  --nav-height: 80px;
}

html {
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: 1.5rem;
}

p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  font-weight: 300;
  max-width: 800px;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent-color);
}

/* Layout */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  z-index: 100;
  background: rgba(13, 13, 15, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

.nav-contact {
  color: var(--accent-color);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(0, 229, 255, 0.03) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

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

.hero-text p {
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
}

.hero-graphic {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.hero-graphic img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.7s ease;
}

.hero-graphic:hover img {
  transform: scale(1.03);
}

.hero-graphic::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.1) 0%, transparent 100%);
  pointer-events: none;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background-color: var(--accent-color);
  color: #000;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 229, 255, 0.2);
  color: #000;
}

/* Sections */
section {
  padding: 8rem 0;
}

.section-dark {
  background-color: var(--bg-secondary);
}

.philosophy {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.philosophy p {
  margin: 0 auto 3rem auto;
  font-size: 1.5rem;
}

/* Grid Layout */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

/* Feature Cards */
.feature-card {
  background: var(--bg-secondary);
  padding: 3rem;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 229, 255, 0.2);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

/* Steps Layout */
.step-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 2rem;
  margin-bottom: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.step-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.step-number {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.1);
  line-height: 1;
}

.step-content h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.step-content p {
  font-size: 1.25rem;
}

/* Footer */
footer {
  padding: 4rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.footer-callout {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 3rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Utilities */
.text-center { text-align: center; }
.mb-2 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 4rem; }
.mt-4 { margin-top: 4rem; }

/* Responsive */
@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-text p {
    margin: 0 auto 2.5rem auto;
  }
  
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .step-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .step-number {
    font-size: 2rem;
  }
}