:root {
  --bg-main: #0B0F17;
  --bg-card: #161F30;
  --bg-card-hover: #1E2B42;
  --primary: #00F0FF;
  --secondary: #7000FF;
  --text-main: #F1F5F9;
  --text-muted: #94A3B8;
  --border: rgba(255, 255, 255, 0.08);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 5%;
  position: sticky;
  top: 0;
  background-color: rgba(11, 15, 23, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 1px;
}

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

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

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

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

/* Hero */
.hero-section {
  padding: 8rem 5% 6rem;
  text-align: center;
  background: radial-gradient(circle at top, rgba(112, 0, 255, 0.15), transparent 60%);
}

.badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(0, 240, 255, 0.1);
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.gradient-text {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  max-width: 600px;
  margin: 0 auto 2rem;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  color: #fff;
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s, opacity 0.2s;
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s;
}

.btn-primary:hover { opacity: 0.9; transform: translateY(-2px); }
.btn-secondary:hover { background: var(--bg-card); }

/* Layout Grid & Sections */
.section {
  padding: 5rem 5%;
}

.dark-bg {
  background-color: rgba(255, 255, 255, 0.02);
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.2rem;
}

.section-title p {
  color: var(--text-muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* Cards */
.card, .about-card, .project-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: transform 0.3s, border-color 0.3s;
}

.card:hover, .project-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
}

.card-icon {
  width: 36px;
  height: 36px;
  color: var(--primary);
  margin-bottom: 1rem;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
}

/* Projects Section Specifics */
.project-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.project-card h3 {
  margin-bottom: 0.5rem;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 4rem 5% 2rem;
  border-top: 1px solid var(--border);
  background-color: var(--bg-card);
}

.copyright {
  margin-top: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}