:root {
  --bg-color: #0d0d12;
  --text-color: #f1f1f4;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --card-bg: rgba(255, 255, 255, 0.03);
  --border-color: rgba(255, 255, 255, 0.08);
  --font-family: 'Inter', sans-serif;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-family);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.15), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(14, 165, 233, 0.1), transparent 25%);
  background-attachment: fixed;
}

header {
  padding: 2rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(to right, #fff, #a5b4fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

nav a {
  color: var(--text-color);
  text-decoration: none;
  margin-left: 2rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 5%;
}

.hero {
  text-align: center;
  padding: 6rem 0;
  animation: fadeIn 1s ease-out;
}

.hero h1 {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.hero p {
  font-size: 1.25rem;
  color: #9ca3af;
  max-width: 600px;
  margin: 0 auto 3rem;
}

.btn {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 1rem 2.5rem;
  border-radius: 9999px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.23);
}

section {
  margin: 8rem 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
}

.services-grid, .portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  backdrop-filter: blur(20px);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.5);
}

.portfolio-logo {
  height: 48px;
  width: auto;
  margin-bottom: 1.5rem;
  display: block;
  border-radius: 12px;
  object-fit: contain;
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card p {
  color: #9ca3af;
  margin-bottom: 1.5rem;
}

.portfolio-link {
  display: inline-block;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.portfolio-link:hover {
  text-decoration: underline;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}