/* CORE STYLES & COLORS */
:root {
  --bg-color: #1b1c1e;
  --accent-color: #007bff;
  --text-color: #ffffff;
  --secondary-text: #b3b3b3;
  --card-bg: #252629;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  scroll-behavior: smooth;
}

/* NAVIGATION */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 50px;
  background-color: var(--bg-color);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid #333;
}

.logo img {
  height: 50px;
  width: auto;
  display: block;
}

.nav-links a {
  color: var(--text-color);
  text-decoration: none;
  margin-left: 30px;
  font-size: 0.9rem;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--accent-color);
}

/* HERO SECTION */
.hero {
  height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
  background: radial-gradient(circle at center, #2a2b30 0%, var(--bg-color) 70%);
}

h1 {
  font-size: 4rem;
  margin-bottom: 10px;
  letter-spacing: -2px;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.2rem;
  color: var(--secondary-text);
  max-width: 600px;
  margin-bottom: 40px;
}

/* BUTTONS */
.cta-button {
  display: inline-block;
  padding: 15px 40px;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 30px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
  text-decoration: none;
  margin: 10px;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 123, 255, 0.4);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
}

.btn-outline:hover {
  background-color: var(--accent-color);
  color: white;
}

/* FEATURES GRID */
.features {
  padding: 80px 50px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background-color: var(--card-bg);
  padding: 40px;
  border-radius: 10px;
  border: 1px solid #333;
  transition: border-color 0.3s;
}

.feature-card:hover {
  border-color: var(--accent-color);
}

.feature-card h3 {
  margin-top: 0;
  color: var(--accent-color);
}

/* PRODUCT SECTION (VTK) */
.product-section {
  background-color: var(--card-bg);
  padding: 80px 20px;
  text-align: center;
  border-top: 1px solid #333;
  border-bottom: 1px solid #333;
}

.product-container {
  max-width: 900px;
  margin: 0 auto;
}

/* Tool preview images – force same width, auto height */
.tool-preview {
  display: block;
  width: 100%;        /* both tools same width */
  height: auto;
  margin: 40px auto;
  border-radius: 10px;
  border: 1px solid #333;
}

/* VTK feature cards */
.vtk-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
  text-align: left;
}

.vtk-feature-item {
  background: var(--bg-color);
  padding: 20px;
  border-radius: 8px;
  border-left: 4px solid var(--accent-color);
}

/* PRICING / AVAILABILITY SECTION */
.pricing-section {
  padding: 80px 20px;
  background-color: var(--bg-color);
  text-align: center;
}

.pricing-card {
  background-color: var(--card-bg);
  border: 1px solid var(--accent-color);
  border-radius: 15px;
  padding: 40px;
  max-width: 400px;
  margin: 0 auto;
  box-shadow: 0 0 20px rgba(0, 123, 255, 0.1);
}

.price {
  font-size: 3.5rem;
  font-weight: bold;
  color: white;
  margin: 20px 0;
}

.price span {
  font-size: 1rem;
  color: var(--secondary-text);
  font-weight: normal;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 30px 0;
  text-align: left;
}

.pricing-features li {
  margin-bottom: 15px;
  color: var(--secondary-text);
}

.pricing-features li::before {
  content: "✓";
  color: var(--accent-color);
  font-weight: bold;
  margin-right: 10px;
}

/* MODAL FOR LEAD CAPTURE */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(5px);
}

.modal-content {
  background: var(--bg-color);
  padding: 40px;
  border-radius: 15px;
  width: 90%;
  max-width: 400px;
  border: 1px solid #333;
  text-align: center;
  position: relative;
}

.close-modal {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--secondary-text);
}

.close-modal:hover {
  color: white;
}

.modal-content input {
  width: 100%;
  padding: 15px;
  margin: 10px 0 20px 0;
  border-radius: 8px;
  border: 1px solid #444;
  background: var(--card-bg);
  color: white;
  box-sizing: border-box;
}

.modal-content input:focus {
  outline: none;
  border-color: var(--accent-color);
}

/* TEXT PAGES (Privacy / Terms / Install) */
.text-page {
  max-width: 800px;
  margin: 50px auto;
  padding: 0 20px;
}

.text-page h1,
.text-page h2 {
  color: var(--accent-color);
}

.install-step {
  background-color: var(--card-bg);
  padding: 20px 30px;
  border-radius: 10px;
  border-left: 4px solid var(--accent-color);
  margin-bottom: 25px;
}

.install-step h3 {
  margin-top: 0;
  color: white;
}

.install-step p,
.install-step li {
  color: var(--secondary-text);
}

ol {
  padding-left: 20px;
}

ol li {
  margin-bottom: 10px;
}

code {
  background-color: #111;
  padding: 2px 6px;
  border-radius: 4px;
  color: #00bfff;
  font-family: monospace;
}

/* FOOTER & SOCIALS */
footer {
  text-align: center;
  padding: 40px;
  color: var(--secondary-text);
  font-size: 0.9rem;
  border-top: 1px solid #333;
}

.social-links a {
  color: var(--secondary-text);
  text-decoration: none;
  margin: 0 10px;
  font-size: 1.2rem;
}

.social-links a:hover {
  color: var(--accent-color);
}

.footer-links a {
  color: var(--secondary-text);
  text-decoration: none;
  margin: 0 10px;
}

.footer-links a:hover {
  color: white;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  nav {
    flex-direction: column;
    padding: 20px;
  }

  .nav-links {
    margin-top: 15px;
  }

  .nav-links a {
    margin: 0 15px;
  }
}