:root {
  --bg-primary: #0A0A0A;
  --bg-secondary: #121212;
  --text-primary: #FFFFFF;
  --text-secondary: #A1A1AA;
  --accent: #FFC947;
  --border: rgba(255, 255, 255, 0.1);
  --font-main: 'Inter', 'Satoshi', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'DM Mono', monospace;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 100px 0;
  border-bottom: 1px solid var(--border);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  background: rgba(10, 10, 10, 0.8);
}

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

.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.1em;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

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

/* Hero Section */
#hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-bottom: none;
}

.hero-tagline {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
  display: block;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  margin-bottom: 2rem;
  max-width: 900px;
}

.hero-title span {
  color: var(--accent);
}

.hero-description {
  font-size: 1.25rem;
  max-width: 600px;
  margin-bottom: 3rem;
}

.hero-cta {
  display: flex;
  gap: 1.5rem;
}

.btn {
  padding: 1rem 2rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: #e5b43f;
  transform: translateY(-2px);
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(255, 201, 71, 0.05);
}

/* Stats Marquee */
.marquee {
  position: absolute;
  bottom: 0;
  width: 100%;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  overflow: hidden;
}

.marquee-content {
  display: flex;
  white-space: nowrap;
  animation: scroll 30s linear infinite;
}

.marquee-item {
  display: flex;
  align-items: center;
  margin-right: 4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}

.marquee-item span {
  color: var(--accent);
  margin-right: 0.5rem;
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Experience & Projects Grid */
.section-header {
  margin-bottom: 4rem;
}

.section-num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: block;
}

.section-title {
  font-size: 3rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 2.5rem;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}

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

.card-tag {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.75rem;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: block;
}

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

.card-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  display: block;
}

.card-list {
  list-style: none;
  margin-bottom: 2rem;
}

.card-list li {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
}

.card-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
}

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

.skill-category h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-tag {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.875rem;
  color: var(--text-primary);
  transition: var(--transition);
}

.skill-tag:hover {
  border-color: var(--accent);
  background: rgba(255, 201, 71, 0.05);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info h3 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.contact-details {
  margin-top: 3rem;
}

.contact-item {
  margin-bottom: 2rem;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: block;
}

.contact-value {
  font-size: 1.25rem;
  font-weight: 500;
}

.contact-value:hover {
  color: var(--accent);
}

/* Footer */
footer {
  padding: 4rem 0;
  text-align: center;
  border-top: 1px solid var(--border);
}

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

/* Mobile Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 2.5rem;
  }
}