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

:root {
  --primary-color: #7a4a22;
  --primary-dark: #5a3a1a;
  --primary-light: #a86328;
  --secondary-color: #e7f5e7;
  --background: #f9f4e6;
  --text-primary: #3a2a1c;
  --text-secondary: #5a4a3c;
  --white: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-lg: rgba(0, 0, 0, 0.15);
  --border-radius: 16px;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  color: var(--text-primary);
  background: var(--background);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 24px;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
}

.logo-icon {
  font-size: 28px;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  position: relative;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--primary-color);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.mobile-menu-btn span {
  width: 25px;
  height: 3px;
  background: var(--primary-color);
  transition: all 0.3s ease;
  border-radius: 3px;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  padding: 20px;
  z-index: 999;
  transform: translateY(-100%);
  transition: transform 0.3s ease;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu a {
  display: block;
  padding: 15px 20px;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  border-bottom: 1px solid rgba(122, 74, 34, 0.1);
  transition: all 0.3s ease;
}

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

.mobile-menu a:hover {
  background: var(--background);
  color: var(--primary-color);
  padding-left: 30px;
}

/* Hero Section */
.hero {
  padding: 140px 0 80px;
  background: radial-gradient(circle at top right, var(--secondary-color) 0%, var(--background) 60%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(122, 74, 34, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 560px;
}

.beta-badge {
  display: inline-block;
  padding: 8px 16px;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(34, 197, 94, 0.25));
  color: #166534;
  border: 2px solid rgba(34, 197, 94, 0.3);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 24px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4);
  }
  50% {
    transform: scale(1.02);
    box-shadow: 0 0 0 8px rgba(34, 197, 94, 0);
  }
}

.hero-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: var(--white);
  box-shadow: 0 8px 25px rgba(122, 74, 34, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(122, 74, 34, 0.35);
}

.btn-primary .btn-icon {
  transition: transform 0.3s ease;
}

.btn-primary:hover .btn-icon {
  transform: translateX(4px);
}

.btn-secondary {
  background: var(--white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stat-icon {
  font-size: 24px;
}

.stat-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
}

.hero-image {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 50px rgba(0, 0, 0, 0.15));
  animation: float 6s ease-in-out infinite;
  -webkit-mask-image: radial-gradient(ellipse 60% 90% at 50% 50%, #000 78%, transparent 100%);
  mask-image: radial-gradient(ellipse 60% 90% at 50% 50%, #000 78%, transparent 100%);
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Features Section */
.features {
  padding: 80px 0;
  background: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.feature-group {
  margin-bottom: 60px;
}

.feature-group:last-child {
  margin-bottom: 0;
}

.feature-group-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 3px solid var(--primary-color);
}

.feature-group-icon {
  font-size: 48px;
}

.feature-group-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--primary-color);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--background);
  border: 2px solid rgba(122, 74, 34, 0.1);
  border-radius: var(--border-radius);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(122, 74, 34, 0.3);
  box-shadow: 0 12px 30px rgba(122, 74, 34, 0.15);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  font-size: 40px;
  margin-bottom: 16px;
  display: block;
}

.feature-card h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

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

/* About Section */
.about {
  padding: 80px 0;
  background: radial-gradient(circle at bottom left, var(--secondary-color) 0%, var(--background) 60%);
}

.about-content {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 24px;
  color: var(--primary-color);
  line-height: 1.2;
}

.about-text p {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.about-highlight {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-color);
  font-style: italic;
  margin-top: 32px;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--white);
  padding: 24px;
  border-radius: var(--border-radius);
  border: 2px solid rgba(122, 74, 34, 0.1);
  transition: var(--transition);
}

.about-feature:hover {
  transform: translateX(8px);
  border-color: rgba(122, 74, 34, 0.3);
  box-shadow: 0 8px 25px rgba(122, 74, 34, 0.15);
}

.about-feature-icon {
  font-size: 36px;
  flex-shrink: 0;
}

.about-feature h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--primary-color);
}

.about-feature p {
  font-size: 15px;
  color: var(--text-secondary);
}

/* Download Section */
.download {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: var(--white);
  text-align: center;
}

.download-badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 24px;
}

.download-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  margin-bottom: 20px;
}

.download-text {
  font-size: clamp(16px, 2vw, 20px);
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.95;
}

.download-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.download-button {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--white);
  color: var(--text-primary);
  padding: 16px 32px;
  border-radius: 12px;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  min-width: 200px;
}

.download-button.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.download-button:not(.disabled):hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
}

.download-icon {
  font-size: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-button-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.download-button-label {
  font-size: 12px;
  font-weight: 500;
  opacity: 0.7;
}

.download-button-name {
  font-size: 18px;
  font-weight: 700;
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 400px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 16px;
  margin-bottom: 12px;
  opacity: 0.9;
}

.footer-made-with {
  font-size: 14px;
  opacity: 0.7;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.footer-column h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--white);
}

.footer-column a {
  display: block;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 12px;
  transition: var(--transition);
}

.footer-column a:hover {
  color: var(--white);
  transform: translateX(4px);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-image {
    order: -1;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

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

  .hero {
    padding: 100px 0 60px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .download-buttons {
    flex-direction: column;
    align-items: center;
  }

  .download-button {
    width: 100%;
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  .header .container {
    padding: 12px 20px;
  }

  .logo {
    font-size: 20px;
  }

  .logo-icon {
    font-size: 24px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .feature-group-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .feature-group-icon {
    font-size: 40px;
  }
}