:root {
  --bg-light: linear-gradient(135deg,#f0f4ff,#e0f7fa);
  --bg-dark: linear-gradient(135deg,#0f2027,#203a43,#2c5364);
  --text-light: #fff;
  --text-dark: #f0f0f0;
  --accent: #00fff7;
  --font: 'Inter', sans-serif;
}

body {
  margin:0;
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-light);
  transition: background 1s ease,color 1s ease;
  scroll-behavior: smooth;
}

body.dark {
  background: var(--bg-light);
  color: #333;
}

header {
  display:flex; justify-content:space-between; align-items:center;
  padding:1rem 2rem;
  position:fixed; width:100%; z-index:100;
  background: rgba(0,0,0,0.3);
  backdrop-filter: blur(8px);
}

header h1 {font-weight:700;font-size:1.5rem;}
#themeToggle {border:none;background:transparent;font-size:1.5rem;cursor:pointer;}

.hero {
  min-height:100vh;
  display:flex; justify-content:center; align-items:center;
  position:relative;
  text-align:center;
  overflow:hidden;
}

.hero canvas {
  position:absolute;
  top:0; left:0;
  width:100%; height:100%;
  z-index:0;
}

.hero-content {
  position:relative; z-index:1;
  color:#fff;
}

.hero-content h1 {font-size:4rem; animation:slideDown 2s ease forwards;}
.hero-content p {font-size:1.5rem; animation:fadeIn 3s ease forwards;}
.cta {
  display:inline-block; margin-top:2rem; padding:1rem 2rem;
  background: linear-gradient(90deg,#ff6a00,#ee0979);
  color:#fff; font-weight:700; border-radius:50px; text-decoration:none;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.cta:hover {transform:scale(1.1); box-shadow:0 0 20px #ff6a00;}

section {padding:5rem 2rem; text-align:center;}

.install {margin-top:1rem; display:inline-flex; align-items:center; gap:0.5rem;
  opacity:0; transform:translateY(40px); transition:opacity 1s ease,transform 1s ease;
}
.install.show {opacity:1; transform:translateY(0);}

code {background:rgba(0,0,0,0.2); padding:0.3rem 0.6rem; border-radius:6px; font-size:1rem;}
.copyBtn {background:var(--accent); border:none; padding:0.5rem 1rem; border-radius:6px; color:#000; cursor:pointer; font-weight:600; transition:transform 0.3s ease;}
.copyBtn:hover {transform:scale(1.1);}

.cards {display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:2rem; margin-top:2rem;}
.card {
  background:rgba(255,255,255,0.05); padding:2rem; border-radius:20px;
  backdrop-filter:blur(15px); box-shadow:0 0 20px rgba(0,255,255,0.2);
  opacity:0; transform:translateY(40px); transition:opacity 1s ease,transform 1s ease;
}
.card.show {opacity:1; transform:translateY(0);}
.card:hover {box-shadow:0 0 40px rgba(0,255,255,0.5); transform:translateY(-5px);}

pre {background:rgba(0,0,0,0.2); padding:1rem; border-radius:12px; overflow-x:auto;
opacity:0; transform:translateY(40px); transition:opacity 1s ease,transform 1s ease;}
pre.show {opacity:1; transform:translateY(0); border-left:4px solid #ff6a00;}

.form-group {position:relative; margin-bottom:1.5rem;}
.form-group input, .form-group textarea {
  width:100%; padding:1rem; border:none; border-radius:10px;
  background: rgba(255,255,255,0.05); color:#fff; outline:none;
}
.form-group label {
  position:absolute; left:1rem; top:1rem; color:#fff;
  pointer-events:none; transition:0.3s ease all;
}
.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
  top:-0.5rem; left:1rem; font-size:0.8rem; color:#00fff7;
}

form.show {opacity:1; transform:translateY(0);}
form button {
  background: linear-gradient(90deg,#ff6a00,#ee0979);
  border:none; padding:1rem; border-radius:50px; color:#fff; font-weight:700; cursor:pointer;
  transition:transform 0.3s ease, box-shadow 0.3s ease;
}
form button:hover {transform:scale(1.05); box-shadow:0 0 20px #ff6a00;}

footer {text-align:center; padding:2rem; background:rgba(0,0,0,0.3);}
footer p {color:#fff; font-weight:500;}

/* Animations */
@keyframes slideDown {
  0% {opacity:0; transform:translateY(-50px);}
  100% {opacity:1; transform:translateY(0);}
}

@keyframes fadeIn {
  0% {opacity:0;}
  100% {opacity:1;}
}

/* Neon glow for CTA & buttons */
.cta, form button {
  box-shadow: 0 0 10px #ff6a00, 0 0 20px #ee0979, 0 0 30px #ff6a00;
}

/* Scroll animations */
.card, .install, pre, form {
  opacity:0;
  transform:translateY(40px);
  transition:opacity 1s ease, transform 1s ease;
}
.card.show, .install.show, pre.show, form.show {
  opacity:1;
  transform:translateY(0);
  }