body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: #0f172a;
  color: #f8fafc;
  line-height: 1.6;
  padding: 0 20px;
  overflow-x: hidden;
}

canvas#bgCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* Sticky header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  max-width: 100%;
  padding: 12px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(15, 23, 42, 0.65); /* translucent strip */
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
}
header h1 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #f8fafc;
  margin: 0;
}

/* Transparent button in header */
.btn-outline {
  padding: 8px 18px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #f8fafc;
  background: transparent;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}


h1, h2, h3 {
  font-weight: 800;
  margin: 0 0 12px;
}

.hero {
  max-width: 1100px;
  margin: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 100px 0 60px; /* extra padding to account for sticky header */
  text-align: center;
}
.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

/* Primary call-to-action button */
.btn-primary {
  display: inline-block;
  background: linear-gradient(90deg, #f97316, #dc2626);
  color: white;
  padding: 12px 20px;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  margin-top: 20px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

section {
  max-width: 1100px;
  margin: auto;
  padding: 40px 0;
}

p { margin-bottom: 14px; }

ul {
  margin: 0 0 20px 20px;
}

footer {
  text-align: center;
  font-size: 14px;
  color: #94a3b8;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

form {
  max-width: 400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

input[type="email"],
textarea {
  margin-top: 6px;
  padding: 10px;
  font-size: 14px;
  border: 1.5px solid #ccc;
  border-radius: 6px;
  resize: vertical;
  transition: border-color 0.3s ease;
}

input[type="email"]:focus,
textarea:focus {
  outline: none;
  border-color: #06b6d4;
  box-shadow: 0 0 4px rgba(6, 182, 212, 0.4);
}

/* Form submit button */
button[type="submit"] {
  padding: 12px;
  font-weight: 700;
  background: linear-gradient(90deg, #f97316, #dc2626);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}
button[type="submit"]:hover {
  background: linear-gradient(90deg, #ea580c, #b91c1c);
  transform: translateY(-2px);
}

/* Glass cards — sharper + more transparent */
.glass {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 6px;
  padding: 40px;
  margin: 40px auto;
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 0.3s ease;
}
.glass:hover {
  transform: translateY(-4px);
}

.glass h2, .glass h3 {
  color: #e2e8f0;
  font-weight: 800;
  margin-bottom: 16px;
}
.glass p, .glass ul {
  color: #f1f5f9;
  font-size: 1rem;
  line-height: 1.6;
}

.glass ul {
  list-style: none;
  padding-left: 0;
}
.glass ul li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 20px;
}
.glass ul li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #06b6d4;
}

/* Split layout */
.split {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  align-items: center;
}
.split .visual {
  font-size: 3rem;
  text-align: center;
}

/* Three-column layout */
.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.card.dark {
  background: rgba(0, 0, 0, 0.3);
}

/* Feature grid */
.feature-grid .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 20px;
}
.feature-grid h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

/* Opening text */
.opening-text {
  max-width: 900px;
  margin: 60px auto;
  text-align: center;
}
.opening-text h3 {
  font-size: 2.5rem;
  line-height: 1.6;
  font-weight: 600;
  color: #e2e8f0;
}

/* Closing CTA as plain text */
.closing-text {
  max-width: 900px;
  margin: 60px auto;
  text-align: center;
}
.closing-text h3 {
  font-size: 1.5rem;
  line-height: 1.6;
  font-weight: 600;
  color: #e2e8f0;
}

@media (max-width: 900px) {
  .three-col {
    grid-template-columns: 1fr; /* stack on mobile */
  }
  header {
    flex-direction: column;
    gap: 10px;
  }
}