:root {
  /* Premium Color Palette */
  --primary-hue: 220; /* Deep Blue */
  --secondary-hue: 340; /* Vibrant Pink/Coral */
  --bg-color: hsl(var(--primary-hue), 20%, 98%);
  --text-color: hsl(var(--primary-hue), 40%, 20%);
  --primary-color: hsl(var(--primary-hue), 70%, 50%);
  --secondary-color: hsl(var(--secondary-hue), 80%, 60%);
  --card-bg: #ffffff;
  --nav-bg: rgba(255, 255, 255, 0.8);
  
  /* Spacing & Layout */
  --container-width: 1200px;
  --section-padding: 80px 0;
  --border-radius: 12px;
  
  /* Fonts */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), hsl(var(--primary-hue), 80%, 40%));
  color: white;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 0;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 50px; /* Increased from 40px */
  width: auto;
}

/* Hero Section */
.hero {
  padding-top: 140px; /* Reduced top padding slightly since logo adds height */
  padding-bottom: 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-logo {
  height: 120px;
  width: auto;
  margin-bottom: 30px;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,0.1)); /* Add subtle depth */
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-color), var(--primary-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.hero p {
  font-size: 1.2rem;
  color: hsl(var(--primary-hue), 20%, 50%);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Features */
.features {
  padding: var(--section-padding);
  background: linear-gradient(to bottom, var(--bg-color), #fff);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 60px;
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.feature-card {
  background: var(--card-bg);
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: 0 10px 40px rgba(0,0,0,0.05);
  transition: transform 0.3s ease;
  border: 1px solid rgba(0,0,0,0.05);
}

.feature-card:hover {
  transform: translateY(-10px);
}

.icon-wrapper {
  width: 60px;
  height: 60px;
  background: hsla(var(--primary-hue), 80%, 90%, 0.5);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 24px;
  color: var(--primary-color);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.feature-card p {
  color: hsl(var(--primary-hue), 10%, 50%);
}

/* Feature Images */
.feature-img {
  width: 100%;
  max-width: 280px; /* Constrain width for a phone-like look */
  height: auto;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  margin: 20px auto;
  display: block;
  border: 4px solid #333; /* Phone frame effect */
}

/* Footer */
footer {
  background: var(--text-color);
  color: white;
  padding: 60px 0;
  text-align: center;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 20px;
  display: block;
}

.copyright {
  opacity: 0.6;
  font-size: 0.9rem;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

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