:root {
    --primary: #38bdf8;
    --secondary: #a78bfa;
    --accent: #f472b6;
    --dark: #0f172a;
    --darker: #0a101f;
    --nav-bg: rgba(30, 41, 59, 0.8);
    --card-bg: rgba(30, 41, 59, 0.6);
    --text-light: #e2e8f0;
    --text-muted: #94a3b8;
  }

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

  body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
  }

  /* Improved navigation */
  nav {
    background: var(--nav-bg);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    justify-content: space-between;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    transition: transform 0.3s ease;
  }

  .logo:hover {
    transform: scale(1.05);
  }

  .logo-icon { 
    font-size: 1.8rem; 
    color: var(--primary);
    transition: transform 0.3s ease;
  }

  .logo:hover .logo-icon {
    transform: rotate(15deg);
  }

  nav h1 {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
  }

  /* Improved hamburger menu */
  .menu-toggle {
    font-size: 1.8rem;
    color: var(--primary);
    cursor: pointer;
    z-index: 101;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
  }

  .menu-toggle:hover {
    background: rgba(56, 189, 248, 0.1);
    transform: rotate(90deg);
  }

  /* Enhanced popup menu */
  .popup-menu {
    position: fixed;
    top: 70px;
    right: 20px;
    background: var(--nav-bg);
    border-radius: 12px;
    padding: 1.2rem;
    display: none;
    flex-direction: column;
    gap: 0.8rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    z-index: 1000;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(-10px);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .popup-menu.show { 
    display: flex;
    opacity: 1;
    transform: translateY(0);
  }

  .popup-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
  }

  .popup-menu a:hover { 
    color: var(--primary);
    background: rgba(56, 189, 248, 0.1);
    transform: translateX(-5px);
  }

  /* Main content improvements */
  .main {
    flex: 1;
    display: flex;
    padding: 3rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
  }

  .left {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem;
    position: relative;
    z-index: 1;
  }

  .intro { 
    color: var(--text-muted); 
    font-size: 1.2rem; 
    margin-bottom: 0.5rem;
    font-weight: 500;
  }

  h1.big { 
    font-size: 4.5vw; 
    font-weight: 900; 
    margin: 1rem 0; 
    line-height: 1.1;
    letter-spacing: -1px;
  }

  .gradient-text {
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    white-space: nowrap;
    border-right: 3px solid var(--primary);
    animation: blink 0.8s infinite, gradientMove 5s infinite alternate;
    display: inline-block;
    background-size: 200% auto;
    position: relative;
  }

  @keyframes blink { 
    0%,50%{border-color:var(--primary)}
    51%,100%{border-color:transparent} 
  }
  
  @keyframes gradientMove {
    0%{background-position:0% 50%}
    100%{background-position:100% 50%}
  }

  .description { 
    color: var(--text-muted); 
    font-size: 1.1rem; 
    max-width: 90%; 
    margin: 1.5rem 0; 
    line-height: 1.7;
  }

  .cta-button {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: white; 
    border: none; 
    padding: 1rem 2.2rem;
    font-size: 1.1rem; 
    font-weight: 600; 
    border-radius: 50px; 
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1.5rem;
    box-shadow: 0 4px 14px 0 rgba(56, 189, 248, 0.4);
    position: relative;
    overflow: hidden;
  }

  .cta-button:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
  }

  .cta-button:hover:before {
    left: 100%;
  }

  .cta-button:hover { 
    transform: translateY(-3px); 
    box-shadow: 0 8px 20px 0 rgba(56, 189, 248, 0.6);
  }

  .right { 
    flex: 1; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    padding: 2rem;
    position: relative;
    z-index: 1;
  }
  
  .languages { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: 2.5rem;
  }
  
  .language-item { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 0.8rem;
    background: var(--card-bg);
    padding: 1.5rem 1rem;
    border-radius: 16px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
  }
  
  .language-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    border-color: rgba(56, 189, 248, 0.2);
  }
  
  .languages img { 
    width: 80px; 
    height: 80px; 
    transition: all 0.4s ease; 
    filter: grayscale(30%) brightness(0.9);
    object-fit: contain;
  }
  
  .languages img:hover { 
    transform: scale(1.2) translateY(-5px); 
    filter: grayscale(0%) brightness(1.1);
  }
  
  .language-name { 
    color: var(--text-muted); 
    font-size: 0.9rem; 
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  /* Enhanced particle background */
  .particles { 
    position: fixed; 
    top:0; 
    left:0; 
    width:100%; 
    height:100%; 
    pointer-events:none; 
    z-index:-1; 
  }
  
  .particle { 
    position: absolute; 
    border-radius:50%; 
    background:linear-gradient(45deg,var(--primary),var(--secondary)); 
    opacity:0.3; 
    animation: float 15s infinite linear;
  }
  
  @keyframes float {
    0%{
      transform:translateY(0) rotate(0deg) scale(0.5); 
      opacity:0.3;
    }
    100%{
      transform:translateY(-100vh) rotate(720deg) scale(1.5); 
      opacity:0;
    }
  }

  /* New floating shapes */
  .floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    overflow: hidden;
  }
  
  .shape {
    position: absolute;
    opacity: 0.1;
    animation: float-shape 20s infinite linear;
  }
  
  .shape-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    top: 20%;
    left: 10%;
  }
  
  .shape-square {
    width: 100px;
    height: 100px;
    background: linear-gradient(45deg, var(--secondary), var(--primary));
    bottom: 30%;
    right: 15%;
    transform: rotate(45deg);
  }
  
  @keyframes float-shape {
    0% {
      transform: translate(0, 0) rotate(0deg);
    }
    50% {
      transform: translate(20px, 20px) rotate(180deg);
    }
    100% {
      transform: translate(0, 0) rotate(360deg);
    }
  }

  /* Responsive improvements */
  @media(max-width:968px){
    .main {
      flex-direction: column;
      padding: 2rem 1rem;
    }
    
    h1.big {
      font-size: 3.5rem;
    }
    
    .left, .right {
      padding: 1rem;
    }
  }
  
  @media(max-width:768px){
    h1.big {
      font-size: 2.8rem;
    }
    
    .languages {
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
    }
    
    .languages img {
      width: 60px;
      height: 60px;
    }
    
    nav {
      padding: 1rem;
    }
    
    .intro {
      font-size: 1.1rem;
    }
    
    .description {
      font-size: 1rem;
    }
  }

  @media(max-width:480px){
    h1.big {
      font-size: 2.2rem;
    }
    
    .languages {
      grid-template-columns: repeat(2, 1fr);
      gap: 1rem;
    }
    
    .language-item {
      padding: 1rem 0.5rem;
    }
    
    .languages img {
      width: 50px;
      height: 50px;
    }
  }