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

:root {
  --primary-violet: #7c3aed;
  --secondary-violet: #a855f7;
  --accent-violet: #c084fc;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-hover: rgba(255, 255, 255, 0.08);
  --text-primary: #ffffff;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-violet: 0 8px 32px rgba(124, 58, 237, 0.2);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: radial-gradient(ellipse at top, var(--bg-secondary) 0%, var(--bg-primary) 70%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  font-weight: 300;
  overflow-x: hidden;
  min-height: 100vh;
}

#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: -1;
  background: #1a1a2e;
}


#header {
  position: fixed;  
  margin-left: -1.2rem;
  margin-right: -1.2rem;
  margin-top: -.2rem;
  left: 20px;
  right: 20px;
  z-index: 1000;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-smooth);
  background-color: rgba(0, 0, 0, 0.9);
}

.logo {
  font-size: 1.5rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary-violet), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.05em;
  position: relative;
}

#nav ul {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}

#nav a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 1.25rem;
  border-radius: 10px;
  transition: var(--transition-smooth);
  display: inline-block;
  user-select: none;
}

#nav a:hover {
  background-color: var(--secondary-violet);
  color: white;
}

#nav a.active,
#nav a[aria-current="page"] {
  background-color: var(--primary-violet);
  color: white;
  font-weight: 600;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 0.75rem;
  border-radius: 12px;
  cursor: pointer;
  backdrop-filter: blur(16px);
  transition: var(--transition-smooth);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  #nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background-color: black;
    border-radius: 12px;
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
  }

  #nav.show {
    max-height: 400px;
    opacity: 1;
    visibility: visible;
  }

  #nav ul {
    flex-direction: column;
    gap: 0;
  }

  #nav li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  #nav a {
    display: block;
    padding: 1rem 1.5rem;
  }
}

.hero {
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  padding-top: 120px; 
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 250;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--primary-violet), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-weight: 300;
  max-width: 600px;
  margin: 0 auto;
}

.skills-container {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.skill-category {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass);
  border-radius: 20px;
  padding: 2.5rem;
  transition: var(--transition-smooth);
  opacity: 0;
  transform: translateY(20px);
}

.skill-category.animated {
  opacity: 1;
  transform: translateY(0);
}

.skill-category:hover {
  box-shadow: var(--shadow-violet);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--glass-border);
}

.category-header i {
  font-size: 2.5rem;
  color: var(--primary-violet);
}

.category-header h3 {
  font-size: 2rem;
  font-weight: 300;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.skill-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.skill-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 15px;
  padding: 1.2rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.skill-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  background: rgba(255, 255, 255, 0.05);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.8rem;
}

.skill-name {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.skill-name i {
  font-size: 1.5rem;
}

.skill-name span {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.skill-icons {
  display: flex;
  gap: 0.3rem;
}

.skill-icon {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background-color 0.3s ease;
}

.skill-icon.filled {
  background-color: var(--primary-violet);
  box-shadow: 0 0 8px rgba(124, 58, 237, 0.6);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.tool-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 15px;
  padding: 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
}

.tool-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
  background: rgba(255, 255, 255, 0.05);
}

.tool-item i {
  font-size: 2rem;
  margin-bottom: 0.2rem;
}

.tool-item span {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 300;
}

footer {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  border-top: 1px solid var(--glass-border);
  padding: 2.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 300;
  margin-top: 4rem;
}

.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  color: var(--text-primary);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-violet), var(--accent-violet));
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
}

.scroll-to-top.show {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  transform: translateY(-6px) scale(1.05);
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.4);
}

@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 4rem;
    text-align: center;
  }
  
  .tagline {
    max-width: 100%;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-image {
    order: -1;
    margin-bottom: 2rem;
  }
}

@media (max-width: 768px) {
  #header {
    top: 10px;
    left: 10px;
    right: 10px;
    padding: 0.75rem 1.5rem;
  }

  .menu-toggle {
    display: block;
  }

  #nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transform: translateY(-10px);
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  #nav.show {
    transform: translateY(0);
    visibility: visible;
    opacity: 1;
  }

  #nav ul {
    flex-direction: column;
    padding: 1rem;
    gap: 0.5rem;
  }

  #nav a {
    display: block;
    padding: 1rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
  }

  .hero-content h1 {
    font-size: 2.8rem;
  }

  .hero-content p {
    font-size: 1rem;
  }

  .skills-container {
    padding: 0 1.5rem;
    margin: 2rem auto;
  }

  .skill-category {
    padding: 2rem;
  }

  .category-header h3 {
    font-size: 1.6rem;
  }

  .skill-list {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .skill-name span {
    font-size: 1rem;
  }

  .tools-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }

  .tool-item i {
    font-size: 1.7rem;
  }

  .tool-item span {
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2.2rem;
  }
  .hero-content p {
    font-size: 0.9rem;
  }

  .skills-container {
    padding: 0 1rem;
  }

  .skill-category {
    padding: 1.5rem;
  }

  .category-header h3 {
    font-size: 1.4rem;
  }
  .category-header i {
    font-size: 2rem;
  }

  .skill-list {
    grid-template-columns: 1fr;
  }

  .skill-item {
    padding: 1rem;
  }

  .skill-name span {
    font-size: 0.95rem;
  }

  .skill-name i {
    font-size: 1.3rem;
  }

  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tool-item {
    padding: 0.8rem;
  }
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, var(--primary-violet), var(--accent-violet));
  border-radius: 4px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-violet);
  outline-offset: 2px;
}