/* Reset and base */
* {
  margin: 0; padding: 0; box-sizing: border-box;
  font-family: 'Montserrat', sans-serif;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: #0a0f19;
  color: #d8dfe7;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

/* Header */
.header {
  background: #101726cc;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #16213e;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.logo {
  font-weight: 700;
  font-size: 1.8rem;
  color: #00aaff;
  text-decoration: none;
  user-select: none;
}

.logo .ai {
  color: #08f;
  font-weight: 900;
}

/* Navigation */
.nav a {
  color: #d8dfe7;
  text-decoration: none;
  margin-left: 2rem;
  font-weight: 600;
  position: relative;
  transition: color 0.3s ease;
}

.nav a:hover,
.nav a.active {
  color: #00aaff;
}

.btn-primary {
  background: #00aaff;
  padding: 0.6rem 1.3rem;
  border-radius: 4px;
  color: #0a0f19;
  font-weight: 700;
  transition: background 0.3s ease;
  user-select: none;
}

.btn-primary:hover {
  background: #08f;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.15rem;
}

/* Hero Section */
.hero {
  padding-top: 100px;
  padding-bottom: 100px;
  background: linear-gradient(135deg, #08101f 0%, #0d1e3f 100%);
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  max-width: 800px;
  margin: 0 auto 1rem;
  color: #00aaff;
  text-shadow: 0 0 12px #08f;
}

.hero p {
  max-width: 600px;
  margin: 0 auto 2.5rem;
  font-size: 1.25rem;
  color: #a0b2ce;
}

/* Features */
.features {
  padding: 4rem 0;
  background: #0e1529;
}

.features h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
  color: #08f;
  text-shadow: 0 0 8px #00aaff;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
  gap: 2rem;
}

.feature-card {
  background: #16213e;
  padding: 1.8rem 1.5rem;
  border-radius: 8px;
  box-shadow: 0 0 10px #00aaff44;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 0 20px #08f;
}

.feature-card h3 {
  margin-bottom: 0.8rem;
  color: #00aaff;
  font-weight: 700;
  font-size: 1.3rem;
}

.feature-card p {
  color: #a0b2ce;
}

/* CTA Section */
.cta {
  padding: 3rem 0;
  background: linear-gradient(135deg, #0a0f19, #08101f);
  text-align: center;
  border-top: 1px solid #16213e;
}

.cta h2 {
  color: #00aaff;
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

/* Footer */
.footer {
  background: #08101f;
  padding: 1rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: #4a5a7b;
  border-top: 1px solid #16213e;
  margin-top: auto;
}

/* Product & About page styling reuse features & container */
.about-section,
.product-hero {
  padding: 100px 0 60px 0;
  background: #0e1529;
  color: #d8dfe7;
}

.about-section h1,
.product-hero h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
  color: #00aaff;
}

.about-section h2 {
  margin-top: 2rem;
  color: #08f;
  font-weight: 700;
}

.about-section p,
.product-hero p,
.product-details p {
  max-width: 700px;
  margin-bottom: 1rem;
  color: #a0b2ce;
}

.about-section ul {
  margin-left: 1rem;
  list-style-type: disc;
  color: #a0b2ce;
}

.product-details {
  padding-bottom: 80px;
}

.product-details h2 {
  color: #08f;
  margin-bottom: 2rem;
}

.contact-section {
  padding: 100px 0;
  background: #0e1529;
  color: #d8dfe7;
}

.contact-section h1 {
  color: #00aaff;
  margin-bottom: 1rem;
}

.contact-section p {
  max-width: 700px;
  margin-bottom: 2rem;
  color: #a0b2ce;
}

form label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 600;
  color: #00aaff;
}

form input,
form textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  margin-bottom: 1.5rem;
  border-radius: 6px;
  border: none;
  font-size: 1rem;
  background: #16213e;
  color: #d8dfe7;
  transition: background 0.3s ease;
}

form input::placeholder,
form textarea::placeholder {
  color: #54668d;
}

form input:focus,
form textarea:focus {
  outline: none;
  background: #0a0f19;
  box-shadow: 0 0 6px #00aaff;
}

/* Responsive */
@media (max-width: 768px) {
  .nav a {
    margin-left: 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .features h2,
  .cta h2 {
    font-size: 2rem;
  }
}