:root {
  /* Google Colors for Accents */
  --color-google-blue: #4285F4;
  --color-google-red: #EA4335;
  --color-google-yellow: #FBBC05;
  --color-google-green: #34A853;

  /* Dark Theme Foundations */
  --bg-primary: #050505;
  --bg-secondary: #111111;
  --bg-glass: rgba(17, 17, 17, 0.7);
  --text-primary: #ffffff;
  --text-secondary: #999999;
  
  /* Layout */
  --container-width: 1200px;
  --nav-height: 80px;
  
  /* Gradients */
  --gradient-agency: linear-gradient(135deg, var(--color-google-blue), var(--color-google-red), var(--color-google-yellow));
  --gradient-agency-text: linear-gradient(to right, var(--color-google-blue), var(--color-google-green));
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

h1 { font-size: clamp(3rem, 5vw, 5rem); }
h2 { font-size: clamp(2.5rem, 4vw, 4rem); }
h3 { font-size: clamp(2rem, 3vw, 3rem); }

p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

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

.text-gradient {
  background: var(--gradient-agency-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.text-blue { color: var(--color-google-blue); }
.text-red { color: var(--color-google-red); }
.text-yellow { color: var(--color-google-yellow); }
.text-green { color: var(--color-google-green); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.125rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4rem;
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background-color: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-google-blue);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-agency-text);
  transition: width 0.3s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

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

.section-header {
  margin-bottom: 4rem;
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  margin-bottom: 1rem;
}

/* Footer */
footer {
  background-color: var(--bg-secondary);
  padding: 6rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  margin-top: 1.5rem;
  font-size: 1rem;
}

.footer-links h4 {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .navbar { padding: 0 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  section { padding: 5rem 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}