:root {
  --bg-color: #0d1117;
  --text-main: #ffffff;
  --text-secondary: #8b949e;
  --accent-primary: #58a6ff;
  --accent-secondary: #a371f7;
  --card-bg: rgba(22, 27, 34, 0.8);
  --glass-border: rgba(240, 246, 252, 0.1);
  --font-main: '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;
}

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

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

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

::-webkit-scrollbar-thumb {
  background: #30363d;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #58a6ff;
}

/* Typography */
h1,
h2,
h3 {
  font-weight: 700;
  letter-spacing: -0.5px;
}

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

a:hover {
  color: var(--accent-secondary);
}

/* Layout Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header / Nav */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13, 17, 23, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

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

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  position: relative;
  z-index: 1010;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
  padding: 8px 4px;
  pointer-events: auto;
}

.lang-btn.active {
  color: var(--accent-primary);
}

.lang-btn:hover:not(.active) {
  color: var(--text-main);
}

.service-link {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-primary);
}

.service-link i {
  transition: var(--transition);
}

.service-link:hover i {
  transform: translateX(5px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background: radial-gradient(circle at 50% 50%, rgba(88, 166, 255, 0.05) 0%, transparent 50%);
}

.hero-content {
  z-index: 2;
  animation: fadeInUp 1s ease-out;
}

.profile-pic {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 3px solid var(--text-main);
  object-fit: cover;
  margin-bottom: 2rem;
  box-shadow: 0 0 30px rgba(88, 166, 255, 0.3);
  animation: pulseProfile 3s infinite ease-in-out;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.hero h1 span {
  color: var(--text-secondary);
}

.typewriter {
  font-size: 1.5rem;
  color: var(--accent-primary);
  height: 1.5em;
  /* reserve space */
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.cursor {
  display: inline-block;
  width: 3px;
  height: 1.2em;
  background-color: var(--accent-secondary);
  animation: blink 1s step-end infinite;
}

.cta-buttons {
  margin-top: 3rem;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
  margin: 0 10px;
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(88, 166, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(88, 166, 255, 0.5);
  background: var(--accent-secondary);
}

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

.btn-secondary:hover {
  border-color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

/* Section Common */
section {
  padding: 100px 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 4rem;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 2px;
}

/* Apps Showcase */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
}

.app-card {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.app-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.app-image {
  width: 100%;
  height: 220px;
  overflow: hidden;
}

.app-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.app-info {
  padding: 30px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.app-info h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: var(--text-main);
}

.app-info p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.5;
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 25px;
}

.app-tags span {
  font-size: 0.75rem;
  padding: 4px 12px;
  background: rgba(88, 166, 255, 0.1);
  color: var(--accent-primary);
  border-radius: 50px;
  border: 1px solid rgba(88, 166, 255, 0.2);
}

.btn-app {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 20px;
  background: var(--accent-primary);
  color: #fff;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.btn-app:hover {
  background: var(--accent-secondary);
  color: #fff;
  transform: scale(1.02);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 40px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: var(--accent-primary);
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

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

/* Tech Stack */
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 20px;
}

.tech-tag {
  font-size: 0.8rem;
  padding: 5px 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  color: var(--text-secondary);
}

/* Footer */
footer {
  padding: 50px 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
  margin-top: 50px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 20px;
}

.social-links a {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: var(--text-main);
  font-size: 1.2rem;
}

.social-links a:hover {
  background: var(--accent-primary);
  color: #fff;
  transform: translateY(-5px);
}

.btn-links {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.btn-links:hover {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  transform: scale(1.05);
}

/* Animations Keyframes */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

@keyframes pulseProfile {
  0% {
    box-shadow: 0 0 30px rgba(88, 166, 255, 0.3);
  }

  50% {
    box-shadow: 0 0 50px rgba(163, 113, 247, 0.5);
  }

  100% {
    box-shadow: 0 0 30px rgba(88, 166, 255, 0.3);
  }
}

/* Main Sections Visibility */
.reveal {
  opacity: 1 !important;
  transform: none !important;
  visibility: visible !important;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .typewriter {
    font-size: 1.2rem;
  }

  .nav-links {
    display: none;
  }
}