/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-text: #262626;
  --heading-text: #000000;
  --border-color: #DBDBDB;
  --background: #FFFFFF;
  --background-light: #FAFAFA;
  --accent-blue: #0095F6;
  --accent-purple: #8E44AD;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-hover: rgba(0, 0, 0, 0.15);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--primary-text);
  background-color: var(--background);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

/* Header Styles */
header {
  position: sticky;
  top: 0;
  background-color: var(--background);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: 0 20px;
  box-shadow: 0 1px 3px var(--shadow);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--heading-text);
  text-decoration: none;
  letter-spacing: -0.5px;
}

nav {
  display: flex;
  gap: 30px;
  align-items: center;
}

nav a {
  color: var(--primary-text);
  text-decoration: none;
  font-weight: 400;
  font-size: 15px;
  transition: color 0.2s ease;
  position: relative;
}

nav a:hover {
  color: var(--heading-text);
}

nav a.active {
  color: var(--heading-text);
  font-weight: 600;
}

nav a.active::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--heading-text);
}

.app-store-btn {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  padding: 8px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 8px var(--shadow);
}

.app-store-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-hover);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 5px;
}

.hamburger span {
  width: 25px;
  height: 2px;
  background-color: var(--heading-text);
  transition: all 0.3s ease;
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background-color: var(--background);
  border-bottom: 1px solid var(--border-color);
  padding: 20px;
  flex-direction: column;
  gap: 15px;
  box-shadow: 0 4px 6px var(--shadow);
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  color: var(--primary-text);
  text-decoration: none;
  font-weight: 400;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

/* Hero Section */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 56px;
  font-weight: 700;
  color: var(--heading-text);
  margin-bottom: 20px;
  letter-spacing: -1px;
  line-height: 1.1;
}

.hero .tagline {
  font-size: 20px;
  color: var(--primary-text);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 400;
}

.hero-cta {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  padding: 16px 40px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 16px var(--shadow);
}

.hero-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--shadow-hover);
}

/* Features Grid */
.features-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 20px;
}

.section-title {
  font-size: 40px;
  font-weight: 700;
  color: var(--heading-text);
  text-align: center;
  margin-bottom: 60px;
  letter-spacing: -0.5px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.feature-card {
  background: var(--background);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 40px 30px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px var(--shadow);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--heading-text);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 15px;
  color: var(--primary-text);
  line-height: 1.6;
}

/* Content Sections */
.content-section {
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 20px;
}

.content-section h1 {
  font-size: 48px;
  font-weight: 700;
  color: var(--heading-text);
  margin-bottom: 30px;
  letter-spacing: -0.5px;
}

.content-section h2 {
  font-size: 32px;
  font-weight: 600;
  color: var(--heading-text);
  margin-top: 40px;
  margin-bottom: 20px;
  letter-spacing: -0.3px;
}

.content-section h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--heading-text);
  margin-top: 30px;
  margin-bottom: 15px;
}

.content-section p {
  font-size: 16px;
  color: var(--primary-text);
  margin-bottom: 20px;
  line-height: 1.8;
}

.content-section ul,
.content-section ol {
  margin-left: 30px;
  margin-bottom: 20px;
}

.content-section li {
  font-size: 16px;
  color: var(--primary-text);
  margin-bottom: 10px;
  line-height: 1.8;
}

/* Feature Detail Cards */
.feature-detail {
  background: var(--background-light);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 40px;
  margin-bottom: 30px;
}

.feature-detail h3 {
  margin-top: 0;
  color: var(--heading-text);
}

/* Forms */
.form-section {
  max-width: 600px;
  margin: 60px auto;
  padding: 40px;
  background: var(--background-light);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--heading-text);
  font-size: 14px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  font-family: inherit;
  background: var(--background);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn-submit {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  padding: 14px 32px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 8px var(--shadow);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-hover);
}

/* Footer */
footer {
  background-color: var(--background-light);
  border-top: 1px solid var(--border-color);
  padding: 40px 20px;
  margin-top: 80px;
}

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

.footer-links {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--primary-text);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

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

.footer-copyright {
  color: var(--primary-text);
  font-size: 14px;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 48px;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  nav {
    display: none;
  }
  
  .hamburger {
    display: flex;
  }
  
  .app-store-btn {
    display: none;
  }
  
  .hero h1 {
    font-size: 36px;
  }
  
  .hero .tagline {
    font-size: 18px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 32px;
  }
  
  .content-section h1 {
    font-size: 36px;
  }
  
  .content-section h2 {
    font-size: 28px;
  }
  
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 60px 20px;
  }
  
  .hero h1 {
    font-size: 28px;
  }
  
  .hero .tagline {
    font-size: 16px;
  }
  
  .features-section,
  .content-section {
    padding: 60px 20px;
  }
  
  .feature-card {
    padding: 30px 20px;
  }
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}