:root{
  --bg:#020617;
  --bg2:#0a0f1c;
  --card:rgba(15,23,42,.62);
  --border:rgba(148,163,184,.18);
  --text:#e5e7eb;
  --muted:#9ca3af;
  --accent:#a4d43a;
  --accent2:#4db8b8;
  --radius:16px;
  --shadow:0 18px 60px rgba(0,0,0,.35);
}

/* Skip Link for Accessibility */
.skip-link{
  position:absolute;
  left:-999px;
  top:8px;
  padding:.6rem 1rem;
  background:linear-gradient(135deg, #a4d43a, #4db8b8);
  color:#020617;
  border:none;
  border-radius:12px;
  z-index:9999;
  font-weight:600;
  font-size:.9rem;
  box-shadow:0 10px 40px rgba(164,212,58,.3);
  transition:all .3s ease;
}

.skip-link:focus{
  left:8px;
  outline:2px solid #fff;
  outline-offset:2px;
}

/* Header with Glassmorphism */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(2,6,23,.75);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  border-bottom:1px solid rgba(148,163,184,.12);
  box-shadow:0 4px 30px rgba(0,0,0,.2);
}

.header-inner{
  min-height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1.5rem;
}

/* Brand/Logo with Glow Effect */
.brand{
  display:flex;
  align-items:center;
  gap:.8rem;
  color:var(--text);
  text-decoration:none;
  font-weight:800;
  font-size:1.1rem;
  letter-spacing:.3px;
  transition:all .3s ease;
  position:relative;
}

.brand::before{
  content:"";
  position:absolute;
  inset:-8px -12px;
  background:radial-gradient(circle at center, rgba(164,212,58,.15), transparent 70%);
  opacity:0;
  transition:opacity .3s ease;
  border-radius:16px;
  z-index:-1;
}

.brand:hover::before{
  opacity:1;
}

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

.brand-logo{
  height:36px;
  width:auto;
  filter:drop-shadow(0 0 0 transparent);
  transition:all .3s ease;
}

.brand:hover .brand-logo{
  filter:drop-shadow(0 0 12px rgba(164,212,58,.4));
  transform:scale(1.05);
}

.brand-name{
  font-size:1.08rem;
  letter-spacing:.3px;
  background:linear-gradient(135deg, #fff 0%, #e5e7eb 50%, var(--accent) 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

/* Mobile Toggle Button with Animation */
.nav-toggle{
  width:46px;
  height:46px;
  border-radius:14px;
  border:1px solid rgba(148,163,184,.25);
  background:linear-gradient(145deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
  display:none;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  position:relative;
  overflow:hidden;
  transition:all .3s ease;
}

.nav-toggle:hover{
  border-color:rgba(164,212,58,.4);
  background:linear-gradient(145deg, rgba(164,212,58,.15), rgba(77,184,184,.1));
  box-shadow:0 8px 32px rgba(164,212,58,.2);
}

.nav-toggle:active{
  transform:scale(.95);
}

.nav-toggle.is-open{
  background:linear-gradient(145deg, rgba(164,212,58,.2), rgba(77,184,184,.15));
  border-color:rgba(164,212,58,.5);
}

/* Hamburger Icon */
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  display:block;
  width:20px;
  height:2px;
  background:linear-gradient(90deg, #fff, rgba(255,255,255,.8));
  border-radius:999px;
  content:"";
  position:absolute;
  transition:all .3s cubic-bezier(.4,0,.2,1);
}

.nav-toggle-bars{
  position:relative;
}

.nav-toggle-bars::before{top:-7px;left:0}
.nav-toggle-bars::after{top:7px;left:0}

/* Animated Hamburger when Open */
.nav-toggle.is-open .nav-toggle-bars{
  background:transparent;
}

.nav-toggle.is-open .nav-toggle-bars::before{
  top:0;
  transform:rotate(45deg);
  background:var(--accent);
}

.nav-toggle.is-open .nav-toggle-bars::after{
  top:0;
  transform:rotate(-45deg);
  background:var(--accent);
}

.nav{display:flex;align-items:center;}

.nav-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  gap:.4rem;
  align-items:center;
}

/* Navigation Links with Modern Hover Effect */
.nav-link{
  color:rgba(226,232,240,.85);
  text-decoration:none;
  font-weight:600;
  font-size:.92rem;
  padding:.65rem 1.1rem;
  border-radius:12px;
  position:relative;
  transition:all .3s cubic-bezier(.4,0,.2,1);
  display:flex;
  align-items:center;
  gap:.4rem;
  z-index:1;
}

.nav-link::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg, rgba(164,212,58,.1), rgba(77,184,184,.1));
  border-radius:12px;
  opacity:0;
  transform:scale(.9);
  transition:all .3s cubic-bezier(.4,0,.2,1);
  pointer-events:none;
  z-index:-1;
}

.nav-link:hover{
  color:#fff;
  transform:translateY(-1px);
}

.nav-link:hover::before{
  opacity:1;
  transform:scale(1);
}

.nav-link.is-active{
  color:var(--accent);
  background:linear-gradient(135deg, rgba(164,212,58,.15), rgba(77,184,184,.1));
  box-shadow:0 4px 20px rgba(164,212,58,.1), inset 0 1px 0 rgba(255,255,255,.05);
  border:1px solid rgba(164,212,58,.2);
}

/* Underline Animation for Non-Active Links */
.nav-link:not(.is-active)::after{
  content:"";
  position:absolute;
  bottom:6px;
  left:50%;
  width:0;
  height:2px;
  background:linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius:999px;
  transform:translateX(-50%);
  transition:width .3s cubic-bezier(.4,0,.2,1);
  pointer-events:none;
}

.nav-link:not(.is-active):hover::after{
  width:60%;
}

@media (max-width: 940px){
  .nav-toggle{display:inline-flex}
  
  .nav{
    position:fixed;
    left:0;
    right:0;
    top:76px;
    padding:0;
    display:none;
    background:#020617;
    border-bottom:1px solid rgba(148,163,184,.15);
    box-shadow:0 20px 50px rgba(0,0,0,.6);
    max-height:calc(100vh - 76px);
    overflow-y:auto;
    animation:slideDown .3s cubic-bezier(.4,0,.2,1);
    z-index:999;
  }
  
  @keyframes slideDown{
    from{
      opacity:0;
      transform:translateY(-10px);
    }
    to{
      opacity:1;
      transform:translateY(0);
    }
  }
  
  .nav.is-open{display:block;}
  
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:1rem;
    background:#020617;
  }
  
  .nav-link{
    display:block;
    padding:1rem 1.25rem;
    border-radius:14px;
    font-size:1rem;
    position:relative;
    z-index:1;
  }
  
  .nav-link::after{
    display:none;
  }
  
  .nav-link:hover{
    background:rgba(255,255,255,.06);
    transform:none;
  }
  
  .nav-link.is-active{
    background:linear-gradient(135deg, rgba(164,212,58,.2), rgba(77,184,184,.15));
    border:1px solid rgba(164,212,58,.3);
  }
  
  /* Mobile menu indicator arrow */
  .nav-link::after{
    content:"→";
    opacity:0;
    transition:all .3s ease;
    color:var(--accent);
    font-size:1.1rem;
    pointer-events:none;
    position:absolute;
    right:1rem;
    top:50%;
    transform:translateY(-50%);
  }
  
  .nav-link:hover::after{
    opacity:1;
    transform:translateY(-50%) translateX(4px);
  }
  
  .nav-link.is-active::after{
    content:"●";
    opacity:1;
    font-size:.6rem;
    pointer-events:none;
    right:1.2rem;
  }
}

/* Lock body scroll when mobile nav is open */
body.nav-open{overflow:hidden;}
@media (max-width: 380px){
  .brand-name{font-size:.95rem}
  .brand-logo{height:32px}
  .nav-toggle{width:42px;height:42px}
}