:root {
  --bg-color: #0A0F16;
  --bg-card: rgba(15, 23, 42, 0.7);
  --text-main: #FFFFFF;
  --text-muted: #94A3B8;
  --accent-blue: #10B981; /* Changed to green for radar feel */
  --accent-blue-light: rgba(16, 185, 129, 0.2);
  --accent-red: #EF4444;
  --accent-green: #10B981;
  --border-light: rgba(16, 185, 129, 0.3);
  --shadow-sm: 0 4px 15px rgba(16, 185, 129, 0.1);
  --shadow-lg: 0 10px 30px rgba(16, 185, 129, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  background-image: linear-gradient(rgba(10, 15, 20, 0.20), rgba(10, 15, 20, 0.40)), url('../img/banner_ai.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

/* Add a dark overlay to make text readable */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(10, 15, 22, 0.85);
  z-index: -1;
}

h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  padding: 15px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 15px;
  color: #FFFFFF;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

nav a.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  margin-left: 24px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  padding: 8px 16px;
  border-radius: 6px;
}

nav a.nav-link:hover {
  color: var(--accent-green);
  background: var(--accent-blue-light);
}

.hero {
  padding: 10px 0 60px;
  text-align: center;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 15px;
  color: var(--text-main);
  text-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

.text-gradient {
  color: var(--accent-green);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 750px;
  margin: 0 auto 30px;
  font-weight: 400;
}

.stores-panel {
  max-width: 600px;
  margin: 0 auto;
  padding: 40px;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stores-panel:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-green);
}

.stores-title {
  color: var(--accent-green);
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.stores-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.stores-badges {
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: center;
}

.store-badge {
  opacity: 0.8;
  cursor: pointer;
  transition: opacity 0.3s ease;
}

.store-badge:hover {
  opacity: 1;
}

.google-badge { height: 56px; border-radius: 8px; }
.apple-badge { display: none; /* iOS not ready yet */ }

.btn-apk {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--accent-green);
  color: var(--bg-main);
  text-decoration: none;
  padding: 0 24px;
  height: 56px;
  border-radius: 8px;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-apk:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
  background-color: #0ea5e9;
  color: white;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-top: 60px;
  margin-bottom: 100px;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 40px 30px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-green);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  display: inline-block;
  color: var(--accent-green);
}

.icon-vital { color: var(--accent-red); }
.icon-ai { color: var(--accent-green); }

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text-main);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* How It Works Section */
.how-it-works {
  padding: 60px 0 100px;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  color: var(--text-main);
  margin-bottom: 20px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  max-width: 800px;
  margin: 0 auto 50px;
  font-size: 1.1rem;
}

.science-steps {
  display: flex;
  flex-direction: column;
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
}

.science-step {
  display: flex;
  align-items: flex-start;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 30px;
  transition: all 0.3s ease;
}

.science-step:hover {
  transform: translateX(10px);
  border-color: var(--accent-green);
  box-shadow: var(--shadow-lg);
}

.step-number {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: rgba(16, 185, 129, 0.15);
  border: 2px solid var(--accent-green);
  color: var(--accent-green);
  font-size: 1.8rem;
  font-weight: 800;
  font-family: 'Outfit', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-right: 24px;
}

.step-content h3 {
  font-size: 1.4rem;
  color: var(--text-main);
  margin-bottom: 10px;
  margin-top: 5px;
}

.step-content p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

@media (max-width: 768px) {
  .science-step {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .step-number {
    margin-right: 0;
    margin-bottom: 20px;
  }
}

/* Legal Pages */
.legal-content {
  max-width: 800px;
  margin: 60px auto;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  padding: 50px;
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.legal-content h1 {
  font-size: 2.5rem;
  margin-bottom: 30px;
  color: var(--accent-green);
}

.legal-content h2 {
  font-size: 1.5rem;
  margin-top: 40px;
  margin-bottom: 15px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 10px;
}

.legal-content p, .legal-content ul {
  margin-bottom: 20px;
  color: var(--text-muted);
}

.legal-content li {
  margin-left: 20px;
  margin-bottom: 10px;
}

footer {
  border-top: 1px solid var(--border-light);
  padding: 60px 0 40px;
  text-align: center;
  background: transparent;
}

.footer-content {
  max-width: 600px;
  margin: 0 auto;
}

.footer-links {
  margin: 20px 0;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s;
}

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

.separator {
  margin: 0 12px;
  color: var(--border-light);
}

.disclaimer {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 20px;
}

@media (max-width: 768px) {
  .hero-title { font-size: 3rem; }
  header { flex-direction: column; gap: 24px; padding: 24px 0; }
  .features { grid-template-columns: 1fr; }
  .stores-badges { flex-direction: column; }
  .legal-content { padding: 30px; }
}