:root {
  --primary: #00bfff;
  --accent: #ffd700;
  --bg: #f9fafb;
  --text: #222;
  --white: #fff;
  --shadow: rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
  padding: 2rem 0;
}

header {
  background-color: #111;
  color: var(--white);
  padding: 1rem 0;
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 600;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--white);
  position: relative;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0%;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--accent);
  transition: width 0.3s;
}

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

.hero {
  background: linear-gradient(135deg, var(--primary), #1e90ff);
  color: var(--white);
  text-align: center;
  padding: 6rem 1rem;
  animation: fadeIn 1s ease-in;
}

.highlight {
  color: var(--accent);
}

.about, .projects, .contact {
  padding: 4rem 0;
  opacity: 0;
  animation: slideIn 1s ease-out forwards;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 4px 15px var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px var(--shadow);
}

footer {
  background-color: #111;
  color: var(--white);
  text-align: center;
  padding: 2rem 0;
  margin-top: 2rem;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 1.2s ease-in-out forwards;
}

.fade-in.delay {
  animation-delay: 0.4s;
}

.slide-in {
  animation: slideIn 1s ease-out forwards;
}

.hover-up:hover {
  transform: translateY(-6px);
}