:root {
  --primary: #111827;
  --secondary: #4b5563;
  --accent: #2563eb;
  --bg: #ffffff;
  --surface: #f9fafb;
  --border: #e5e7eb;
  --radius: 6px;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg);
  color: var(--primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* Interactive Background */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.section-padding {
  padding: 80px 0;
}

.btn-primary {
  background-color: var(--accent);
  border-color: var(--accent);
  border-radius: var(--radius);
  padding: 10px 20px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: #1d4ed8;
  border-color: #1d4ed8;
  transform: translateY(-2px);
}

/* 3D Portfolio Card Effects */
.portfolio-card-container {
  perspective: 1000px;
}

.portfolio-card {
  transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  transform-style: preserve-3d;
  cursor: pointer;
}

.portfolio-card:hover {
  transform: rotateY(10deg) rotateX(5deg) scale(1.05);
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: all 0.3s ease;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(5px);
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
}

.nav-link {
  color: var(--secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}

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

.hero {
  padding: 120px 0 80px;
  background-color: transparent;
}

h1, h2, h3 {
  font-weight: 700;
  letter-spacing: -0.025em;
}

.portfolio-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  background-color: rgba(249, 250, 251, 0.8);
  backdrop-filter: blur(5px);
}

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1050;
}