/* LifeToBe Landing Page - Modern Design */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans CJK JP', sans-serif;
  line-height: 1.6;
  color: #2c3e50;
  background: #f3f3f3;
  font-size: 16px;
  min-height: 100vh;
}

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

/* Header */
header {
  background: rgba(243, 243, 243, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding: 1rem 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #667eea;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.lang-switcher a {
  color: #667eea;
  text-decoration: none;
  margin: 0 8px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: opacity 0.2s ease;
}

.lang-switcher a:hover {
  opacity: 0.7;
}

.lang-switcher span {
  color: #2c3e50;
  font-weight: 600;
  margin: 0 8px;
}

/* Hero Section */
.hero {
  padding: 8rem 0 6rem;
  text-align: center;
  background: transparent;
  margin-top: 0;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #2c3e50;
  letter-spacing: -0.02em;
  text-shadow: none;
}

.hero .tagline {
  font-size: 1.5rem;
  color: #5a6c7d;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 300;
  line-height: 1.4;
}

.app-icon {
  width: 140px;
  height: 140px;
  border-radius: 30px;
  margin-bottom: 2.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

.app-icon:hover {
  transform: translateY(-5px);
}

/* Download Buttons */
.hero .download-btn {
  margin-top: 32px;
}

.app-store-badge {
  height: 80px;
  width: auto;
  max-width: 240px;
  transition: transform 0.2s ease-in-out, opacity 0.2s ease-in-out;
  border-radius: 12px;
  margin: 24px auto 0;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.download-btn {
  display: inline-block;
  text-decoration: none;
  margin-top: 20px;
}

.download-btn:hover .app-store-badge {
  transform: scale(1.05);
  opacity: 0.9;
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.15));
}

.download-btn:active .app-store-badge {
  transform: scale(0.98);
}

@media (max-width: 768px) {
  .app-store-badge {
    height: 70px;
    max-width: 210px;
    margin: 20px auto 0;
  }

  .hero .download-btn {
    margin-top: 28px;
  }
}

@media (max-width: 480px) {
  .app-store-badge {
    height: 60px;
    max-width: 180px;
    margin: 16px auto 0;
  }

  .hero .download-btn {
    margin-top: 24px;
  }
}

/* Sponsor Section */
.sponsor-section {
  padding: 4rem 0;
  background: transparent;
  text-align: center;
}

.sponsor-section h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #2c3e50;
  letter-spacing: -0.02em;
}

.sponsor-section p {
  font-size: 1.2rem;
  color: #5a6c7d;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.sponsor-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #e74c3c;
  color: white;
  padding: 16px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.sponsor-btn:hover {
  background: #c0392b;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(231, 76, 60, 0.4);
}

.sponsor-btn::before {
  content: "❤️";
  margin-right: 8px;
  font-size: 1.2em;
}

/* Features Section */
.features {
  padding: 6rem 0;
  background: transparent;
  position: relative;
}

.features h2 {
  text-align: center;
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 4rem;
  color: #2c3e50;
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.feature-item {
  text-align: center;
  padding: 0;
}

.feature-item h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #667eea;
  letter-spacing: -0.01em;
}

.feature-item p {
  color: #5a6c7d;
  line-height: 1.8;
  font-size: 1.1rem;
  font-weight: 400;
}

/* Privacy Section - Simple clean design */
.privacy-highlight {
  padding: 4rem 0;
  background: transparent;
  text-align: center;
}

.privacy-highlight h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: #2c3e50;
  letter-spacing: -0.02em;
}

.privacy-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.privacy-item {
  background: transparent;
  padding: 0;
  border-radius: 0;
  box-shadow: none;
  max-width: none;
  text-align: center;
}

.privacy-item h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: #27ae60;
  margin-bottom: 1rem;
}

.privacy-item p {
  color: #5a6c7d;
  line-height: 1.6;
  font-size: 1rem;
}

/* Footer */
footer {
  background: #2c3e50;
  padding: 4rem 0 2rem;
  color: #ecf0f1;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  max-width: 800px;
  margin: 0 auto;
}

.footer-section h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #ffffff;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.8rem;
}

.footer-section ul li a {
  color: #bdc3c7;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-section ul li a:hover {
  color: #667eea;
}

.footer-bottom {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid #34495e;
  color: #95a5a6;
  font-size: 0.9rem;
}

/* Support & Privacy Pages */
.page-header {
  padding: 8rem 0 3rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  text-align: center;
  color: white;
}

.page-header h1 {
  font-size: 3rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.page-header p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.2rem;
  font-weight: 300;
}

.page-content {
  padding: 4rem 0;
  max-width: 800px;
  margin: 0 auto;
  background: white;
  border-radius: 0;
}

.page-content h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #2c3e50;
  margin: 3rem 0 1.5rem;
  border-bottom: 3px solid #667eea;
  padding-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.page-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #667eea;
  margin: 2rem 0 1rem;
}

.page-content p {
  margin-bottom: 1.2rem;
  line-height: 1.8;
  color: #5a6c7d;
}

.page-content ul {
  margin-left: 2rem;
  margin-bottom: 1.5rem;
}

.page-content ul li {
  margin-bottom: 0.8rem;
  color: #5a6c7d;
  line-height: 1.6;
}

.contact-info {
  background: #f8f9fa;
  padding: 2.5rem;
  border-radius: 15px;
  margin: 3rem 0;
  text-align: center;
  border-left: 4px solid #667eea;
}

.contact-info h3 {
  color: #667eea;
  margin-bottom: 1.5rem;
  font-size: 1.4rem;
}

.contact-info p {
  margin-bottom: 0.8rem;
}

.contact-info strong {
  color: #2c3e50;
}

.highlight-box {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 2.5rem;
  border-radius: 15px;
  margin: 3rem 0;
}

.highlight-box h3 {
  color: white;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.highlight-box p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1rem;
}

.highlight-box ul li {
  color: rgba(255, 255, 255, 0.9);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero {
    padding: 6rem 0 4rem;
  }

  .hero h1 {
    font-size: 2.8rem;
  }

  .hero .tagline {
    font-size: 1.2rem;
    padding: 0 1rem;
  }

  .features h2 {
    font-size: 2.2rem;
  }

  .app-store-badge {
    filter: drop-shadow(0 4px 8px rgba(255, 255, 255, 0.1));
  }

  .download-btn:hover .app-store-badge {
    filter: drop-shadow(0 6px 12px rgba(255, 255, 255, 0.15));
  }

  .privacy-features {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .header-content {
    flex-direction: row;
    justify-content: space-between;
  }

  .container {
    padding: 0 20px;
  }

  .app-icon {
    width: 120px;
    height: 120px;
    border-radius: 25px;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  }

  .hero h1 {
    color: #ecf0f1;
  }

  .hero .tagline {
    color: rgba(236, 240, 241, 0.9);
  }

  .sponsor-section h2 {
    color: #ecf0f1;
  }

  .sponsor-section p {
    color: rgba(236, 240, 241, 0.9);
  }

  .features {
    background: transparent;
    color: #ecf0f1;
  }

  .features h2 {
    color: #ecf0f1;
  }

  .feature-item h3 {
    color: #ecf0f1;
  }

  .feature-item p {
    color: rgba(236, 240, 241, 0.9);
  }

  .privacy-highlight {
    background: transparent;
  }

  .privacy-highlight h2 {
    color: #ecf0f1;
  }

  .privacy-item h3 {
    color: #ecf0f1;
  }

  .privacy-item p {
    color: rgba(236, 240, 241, 0.9);
  }

  .page-content {
    background: #2c3e50;
    color: #ecf0f1;
  }

  .page-content h2 {
    color: #ecf0f1;
    border-bottom-color: #3498db;
  }

  .page-content h3 {
    color: #3498db;
  }

  .page-content p {
    color: #bdc3c7;
  }

  .page-content ul li {
    color: #bdc3c7;
  }

  .contact-info {
    background: #34495e;
    border-left-color: #3498db;
  }

  .contact-info h3 {
    color: #3498db;
  }

  .contact-info p {
    color: #bdc3c7;
  }

  .contact-info strong {
    color: #ecf0f1;
  }

  header {
    background: rgba(44, 62, 80, 0.95);
    border-bottom-color: rgba(52, 73, 94, 0.3);
  }

  .logo {
    color: #3498db;
  }

  .lang-switcher a {
    color: #3498db;
  }

  .lang-switcher span {
    color: #ecf0f1;
  }
}

/* App Showcase Section */
.app-showcase {
  padding: 6rem 0;
  background: transparent;
  text-align: center;
}

.app-showcase h2 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 4rem;
  color: #2c3e50;
  letter-spacing: -0.02em;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
}

.showcase-item {
  text-align: center;
  padding: 0;
}

.showcase-image {
  width: 200px;
  height: auto;
  border-radius: 20px;
  margin-bottom: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.showcase-image:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.showcase-item h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #667eea;
  letter-spacing: -0.01em;
}

.showcase-item p {
  color: #5a6c7d;
  line-height: 1.6;
  font-size: 1rem;
  font-weight: 400;
  max-width: 250px;
  margin: 0 auto;
}

/* Dark mode support for App Showcase */
@media (prefers-color-scheme: dark) {
  .app-showcase h2 {
    color: #ecf0f1;
  }

  .showcase-item h3 {
    color: #3498db;
  }

  .showcase-item p {
    color: rgba(236, 240, 241, 0.9);
  }

  .showcase-image {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  }

  .showcase-image:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
  }
}

/* Responsive Design for App Showcase */
@media (max-width: 768px) {
  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .showcase-image {
    width: 160px;
  }

  .app-showcase h2 {
    font-size: 2.2rem;
  }
}

/* Policy Dates Section */
.policy-dates {
  margin-top: 2rem;
  padding: 1rem 0;
  border-top: 1px solid rgba(102, 126, 234, 0.3);
}

.policy-dates p {
  color: #5a6c7d;
  margin-bottom: 0.5rem;
}

.policy-dates strong {
  color: #2c3e50;
}

/* Dark mode support for Policy Dates */
@media (prefers-color-scheme: dark) {
  .policy-dates {
    border-top-color: rgba(52, 152, 219, 0.3);
  }

  .policy-dates p {
    color: #bdc3c7;
  }

  .policy-dates strong {
    color: #ecf0f1;
  }
}