:root {
  --primary-blue: #2563eb;
  --secondary-blue: #1e40af;
  --accent-red: #dc2626;
  --accent-red-hover: #b91c1c;
  --bg-white: #ffffff;
  --bg-offset: #f8fafc;
  --text-main: #0f172a;
  --text-muted: #475569;
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(226, 232, 240, 0.5);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --radius: 12px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-main);
}

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

ul {
  list-style: none;
}

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

.section-padding {
  padding: 100px 0;
}

.bg-offset {
  background-color: var(--bg-offset);
}

.align-center {
  text-align: center;
}

.section-header {
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Navbar Style (for injection) */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  padding: 0.75rem 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.95rem;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-blue);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-blue);
  transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
}

.mobile-menu-btn span {
  width: 30px;
  height: 2px;
  background-color: var(--text-main);
  transition: var(--transition);
  transform-origin: center;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: var(--bg-white);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    transition: var(--transition);
  }

  .nav-links.mobile-active {
    right: 0;
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.8)), 
              url('../assets/hero_bg.png') center/cover no-repeat;
  position: relative;
}

.hero-content {
  max-width: 650px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 4rem;
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  
  .hero-content {
    max-width: 100%;
    margin: 0 auto;
  }
  
  .cta-group {
    justify-content: center;
  }
}

.badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-blue);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: 1.5rem;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--primary-blue), var(--accent-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

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

.btn {
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: white;
  box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background-color: var(--secondary-blue);
  transform: translateY(-2px);
  box-shadow: 0 15px 25px -5px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border: 2px solid var(--glass-border);
}

.btn-secondary:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.05);
}

/* Skills/Services Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: white;
  padding: 2.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  width: 60px;
  height: 60px;
  background: rgba(37, 99, 235, 0.05);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: var(--primary-blue);
}

.card.red-accent .card-icon {
  background: rgba(220, 38, 38, 0.05);
  color: var(--accent-red);
}

.card.red-accent:hover {
  border-color: var(--accent-red);
}

.card h3 {
  margin-bottom: 1rem;
}

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

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (max-width: 480px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-offset);
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
}

.skill-item i {
  color: var(--primary-blue);
}

/* Footer (for injection) */
.footer {
  background: var(--bg-offset);
  padding: 80px 0 40px;
  border-top: 1px solid var(--glass-border);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 60px;
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-info p {
  color: var(--text-muted);
  margin-top: 1rem;
  max-width: 300px;
}

.footer-links h4 {
  margin-bottom: 1.5rem;
}

.footer-links ul li {
  margin-bottom: 0.75rem;
}

.footer-links ul li a {
  color: var(--text-muted);
}

.footer-links ul li a:hover {
  color: var(--primary-blue);
  padding-left: 5px;
}

.footer-bottom {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Terminal Animation for Linux Feel */
.terminal-card {
  background: #1e293b;
  color: #fff;
  border-radius: 12px;
  padding: 1.5rem;
  font-family: 'Fira Code', 'JetBrains Mono', monospace;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.terminal-header {
  display: flex;
  gap: 8px;
  margin-bottom: 1rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.terminal-line {
  margin-bottom: 0.5rem;
}

.terminal-line span {
  color: #e2e8f0;
}

.cmd { color: #facc15; }
.path { color: #22d3ee; }
.user { color: #4ade80; }

/* Contact Specific */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
}

@media (max-width: 900px) {
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.input-group {
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.input-group input, .input-group textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  background: var(--bg-offset);
  font-family: inherit;
}

.input-group input:focus, .input-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-up {
  animation: fadeInUp 0.8s ease-out forwards;
}