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

:root {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --secondary: #64748b;
  --accent: #8b5cf6;
  --background: #f8fafc;
  --foreground: #0f172a;
  --muted: #f1f5f9;
  --muted-foreground: #64748b;
  --border: #e2e8f0;
  --card: #ffffff;
  --card-foreground: #0f172a;
  --radius: 0.75rem;
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  overflow-x: hidden;
}

/* --- Layout & Utilities --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 8rem 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }

/* --- Navbar --- */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

nav .container {
  height: 4.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--foreground);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border-radius: 50%;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

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

.btn-contact {
  background-color: var(--primary);
  color: white;
  padding: 0.6rem 1.25rem;
  border-radius: 9999px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-contact:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
}

/* --- Hero --- */
#hero {
  padding-top: 10rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-blob {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);
  filter: blur(100px);
  z-index: -1;
  border-radius: 50%;
}

.hero-content {
  max-width: 800px;
}

.hero-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--muted);
  color: var(--primary);
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 1rem 2rem;
  background-color: var(--primary);
  color: white;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary {
  padding: 1rem 2rem;
  background-color: white;
  color: var(--foreground);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.btn-secondary:hover { background-color: var(--muted); }

/* --- Cards & Grid --- */
.grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.card-icon {
  width: 3rem;
  height: 3rem;
  background: var(--muted);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary);
  font-size: 1.25rem;
}

/* --- Stats --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--foreground);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--secondary);
}

/* --- Projects --- */
.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.project-image {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: var(--transition);
}

.project-card:hover .project-image {
  transform: scale(1.05);
}

.project-content {
  padding: 1.5rem;
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  background: var(--muted);
  border-radius: 1rem;
  color: var(--secondary);
}

/* --- Skills --- */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.skill-badge {
  padding: 3rem 2rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.skill-badge:hover {
  border-color: var(--primary);
  background: white;
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.skill-badge i {
  font-size: 3.5rem;
  color: var(--primary);
  transition: var(--transition);
}

.skill-badge:hover i {
  transform: scale(1.1);
  color: var(--accent);
}

/* --- Footer --- */
footer {
  background: var(--muted);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.copy {
  color: var(--secondary);
  font-size: 0.875rem;
}

.socials {
  display: flex;
  gap: 1.5rem;
}

.socials a {
  color: var(--secondary);
  font-size: 1.25rem;
  transition: var(--transition);
}

.socials a:hover {
  color: var(--primary);
  transform: translateY(-3px);
}

/* --- Animation Classes --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-title { font-size: 3rem; }
  .section { padding: 5rem 0; }
  .footer-content { flex-direction: column; text-align: center; }
}