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

/* Font display optimization */
@font-face {
  font-family: "Inter";
  font-display: swap;
}

/* Prevent layout shift */
img {
  max-width: 100%;
  height: auto;
}

.phone-mockup {
  width: 300px;
  height: 600px;
  position: relative;
  margin: 0 auto;
}

.app-preview {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.screenshot-img {
  width: 300px;
  height: 600px;
  object-fit: contain;
  display: block;
}

.logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.play-badge {
  width: 200px;
  height: 60px;
  object-fit: contain;
}

:root {
  /* Colors */
  --primary-color: #059669;
  --secondary-color: #bfdfff;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --info-color: #3b82f6;

  /* Light Theme */
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --card-color: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --border-color: #e2e8f0;
  --divider-color: #f1f5f9;

  /* Dark Theme */
  --dark-bg-color: #0f172a;
  --dark-surface-color: #1e293b;
  --dark-card-color: #334155;
  --dark-text-primary: #f8fafc;
  --dark-text-secondary: #cbd5e1;
  --dark-text-tertiary: #94a3b8;
  --dark-border-color: #475569;
  --dark-divider-color: #334155;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter",
    sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: var(--dark-bg-color);
    --surface-color: var(--dark-surface-color);
    --card-color: var(--dark-card-color);
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --text-tertiary: var(--dark-text-tertiary);
    --border-color: var(--dark-border-color);
    --divider-color: var(--dark-divider-color);
  }

  .navbar {
    background: var(--surface-color);
    box-shadow: none;
  }
}

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

/* Language Switcher */
.language-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-1);
  align-items: center;
  justify-content: flex-start;
}

/* Language Switcher in Footer */
.footer-lang-switcher {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
  max-width: 100%;
  justify-content: center;
}

.lang-btn {
  background: none;
  border: none;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 32px;
  max-width: 60px;
  text-align: center;
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footer-lang-switcher .lang-btn {
  font-size: var(--font-size-xs);
  padding: var(--spacing-1) var(--spacing-2);
}

.lang-btn.active {
  background: var(--primary-color);
  color: white;
}

.lang-btn:hover:not(.active) {
  background: var(--divider-color);
  color: var(--text-primary);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--surface-color);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 999;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--primary-color);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(
    135deg,
    var(--bg-color) 0%,
    var(--divider-color) 100%
  );
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-6);
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-8);
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-12);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4) var(--spacing-8);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: var(--font-size-lg);
}

.btn-primary {
  background: var(--primary-color);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: #047857;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.hero-stats {
  display: flex;
  gap: var(--spacing-8);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

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

.phone-mockup {
  position: relative;
  width: 300px;
  height: 600px;
  background: var(--surface-color);
  border-radius: 40px;
  padding: 20px;
  box-shadow: var(--shadow-xl);
  border: 8px solid var(--border-color);
}

.app-preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 30px;
}

/* Features Section */
.features {
  padding: var(--spacing-24) 0;
  background: var(--surface-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-4);
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
}

.feature-card {
  background: var(--card-color);
  padding: var(--spacing-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  text-align: center;
}

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

.feature-icon {
  width: 80px;
  height: 80px;
  background: var(--secondary-color);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-6);
}

.feature-icon i {
  font-size: var(--font-size-3xl);
  color: var(--primary-color);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-4);
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
  padding: var(--spacing-24) 0;
  background: var(--bg-color);
}

.screenshots-carousel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
  margin-top: var(--spacing-12);
}

.screenshot-item {
  text-align: center;
  background: var(--card-color);
  padding: var(--spacing-6);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  width: 100%;
  max-width: 350px;
  margin: 0 auto;
}

.screenshot-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.screenshot-img {
  width: 300px;
  height: 600px;
  object-fit: contain;
  display: block;
  margin: 0 auto var(--spacing-4);
  border-radius: var(--radius-lg);
}

.screenshot-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

/* Download Section */
.download {
  padding: var(--spacing-24) 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, #5a7bc7 100%);
  color: white;
  text-align: center;
}

.download-content {
  max-width: 600px;
  margin: 0 auto;
}

.download-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.download-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-8);
  opacity: 0.9;
}

.download-buttons {
  margin-bottom: var(--spacing-12);
}

.download-btn {
  display: inline-block;
  transition: transform 0.3s ease;
}

.download-btn:hover {
  transform: scale(1.05);
}

.play-badge {
  height: 80px;
  width: auto;
}

.download-info {
  display: flex;
  justify-content: center;
  gap: var(--spacing-8);
  flex-wrap: wrap;
}

.info-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.info-item i {
  font-size: var(--font-size-lg);
}

/* Support Section */
.support {
  padding: var(--spacing-24) 0;
  background: var(--surface-color);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-8);
  margin-top: var(--spacing-12);
}

.support-card {
  background: var(--card-color);
  padding: var(--spacing-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  text-align: center;
}

.support-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.support-icon {
  width: 60px;
  height: 60px;
  background: var(--secondary-color);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-4);
}

.support-icon i {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
}

.support-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-3);
}

.support-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-4);
  line-height: 1.6;
}

.support-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.support-link:hover {
  color: #047857;
}

/* Footer */
.footer {
  background: var(--surface-color);
  color: var(--text-secondary);
  padding: var(--spacing-16) 0 var(--spacing-8);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.footer-logo .logo {
  width: 32px;
  height: 32px;
}

.footer-logo .logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-4);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.social-links {
  display: flex;
  gap: var(--spacing-4);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--surface-color);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--divider-color);
  padding-top: var(--spacing-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.footer-copyright {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.footer-bottom-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
  flex-wrap: wrap;
}

.footer-legal {
  display: flex;
  gap: var(--spacing-6);
}

.footer-legal a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color 0.2s ease;
}

.footer-legal a:hover {
  color: var(--text-primary);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

/* Focus styles for accessibility */
.btn:focus,
.nav-link:focus,
.lang-btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Selection styles */
::selection {
  background: var(--secondary-color);
  color: var(--text-primary);
}