@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');

:root {
  --primary-blue: #2196F3;
  --light-blue: #E1F5FE;
  --accent-purple: #673AB7;
  --success-green: #4CAF50;
  --warning-orange: #FF9800;
  --text-dark: #333333;
  --text-light: #FFFFFF;
  --card-bg: #FFFFFF;
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 20px rgba(33, 150, 243, 0.15);
  --shadow-lg: 0 20px 40px rgba(103, 58, 183, 0.2);
  --radius-md: 16px;
  --radius-lg: 32px;
  --radius-pill: 9999px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  font-family: 'Nunito', sans-serif;
  background-color: var(--light-blue);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* --- Layout & Typography --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3, h4 {
  font-weight: 800;
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

h1 {
  font-size: 3.5rem;
  line-height: 1.2;
}

h2 {
  font-size: 2.5rem;
}

p {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  color: #555;
}

a {
  text-decoration: none;
  color: var(--primary-blue);
  font-weight: 700;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-purple);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 1.125rem;
  font-weight: 700;
  text-align: center;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: var(--text-light);
}

.btn-primary:hover {
  background-color: #1E88E5;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: var(--text-light);
}

.btn-accent {
  background-color: var(--accent-purple);
  color: var(--text-light);
}

.btn-accent:hover {
  background-color: #5E35B1;
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: var(--text-light);
}

/* --- Navigation --- */
header {
  background-color: var(--card-bg);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-blue);
}

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

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-links a:not(.btn) {
  color: var(--text-dark);
  font-weight: 600;
}

.nav-links a:not(.btn):hover {
  color: var(--primary-blue);
}

/* --- Hero Section --- */
.hero {
  padding: 80px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  overflow: hidden;
}

.hero-content {
  flex: 1;
  max-width: 600px;
  animation: slideUp 0.8s ease-out;
}

.hero-image-wrapper {
  flex: 1;
  display: flex;
  justify-content: center;
  animation: float 4s ease-in-out infinite;
}

.hero-app-icon {
  width: 250px;
  height: 250px;
  border-radius: 50px;
  box-shadow: var(--shadow-lg);
}

/* --- Features Section --- */
.features {
  padding: 80px 0;
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  margin: 0 20px 80px;
  box-shadow: var(--shadow-md);
}

.features-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  padding: 0 40px;
}

.feature-card {
  background-color: var(--light-blue);
  padding: 40px 30px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
  border: 2px solid transparent;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  color: var(--accent-purple);
}

/* --- Footer --- */
footer {
  background-color: var(--text-dark);
  color: var(--text-light);
  padding: 60px 0 20px;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.footer-links a {
  color: #bbb;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--text-light);
}

.footer-bottom {
  font-size: 0.9rem;
  color: #777;
}

/* --- Simple Pages (Privacy, Terms, etc.) --- */
.page-header {
  background-color: var(--primary-blue);
  color: white;
  padding: 60px 20px;
  text-align: center;
  border-bottom-left-radius: 50% 10%;
  border-bottom-right-radius: 50% 10%;
  margin-bottom: 40px;
}

.page-header h1 {
  color: white;
  margin: 0;
}

.page-content {
  background-color: white;
  padding: 50px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  max-width: 800px;
  margin: 0 auto 80px;
}

.page-content h2 {
  margin-top: 2rem;
  font-size: 1.8rem;
}

/* --- Animations --- */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-15px);
  }
  100% {
    transform: translateY(0px);
  }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 40px 0;
  }
  h1 {
    font-size: 2.5rem;
  }
  .nav-links {
    flex-direction: column;
    gap: 10px;
  }
}