/* Landing Page Styles - Sharp/Angular Design */

:root {
  /* Colors */
  --primary: #0066FF;
  --primary-hover: #0052CC;
  --secondary: #FF6B6B;
  --secondary-hover: #FF5252;
  
  /* Light theme */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary: #F1F3F4;
  --text-primary: #1A1A1A;
  --text-secondary: #4A4A4A;
  --text-muted: #6C757D;
  --border: #E9ECEF;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-lg: rgba(0, 0, 0, 0.15);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border radius - Sharp design */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Transitions */
  --transition: all 0.2s ease;
  --transition-slow: all 0.3s ease;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #121212;
  --bg-secondary: #1E1E1E;
  --bg-tertiary: #2A2A2A;
  --text-primary: #E0E0E0;
  --text-secondary: #B0B0B0;
  --text-muted: #8A8A8A;
  --border: #404040;
  --shadow: rgba(0, 0, 0, 0.4);
  --shadow-lg: rgba(0, 0, 0, 0.6);
}

/* Dark theme specific fixes */

[data-theme="dark"] .toggle::after {
  background: var(--bg-primary);
}

[data-theme="dark"] .phone-screen {
  background: #1A1A1A;
  border: 1px solid var(--border);
}

[data-theme="dark"] .app-interface {
  background: #1A1A1A;
}

[data-theme="dark"] .card-item span,
[data-theme="dark"] .tab,
[data-theme="dark"] .card-row span,
[data-theme="dark"] .setting-row span {
  color: var(--text-primary);
}

[data-theme="dark"] .mockup-content {
  background: #1A1A1A;
  color: var(--text-primary);
}

[data-theme="dark"] .cta-button {
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.2);
}

[data-theme="dark"] .feature-card {
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .screenshot-mockup {
  border: 2px solid var(--border);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .hero {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}



[data-theme="dark"] .scanner-instructions {
  color: var(--text-secondary);
}

[data-theme="dark"] .header {
  background-color: rgba(18, 18, 18, 0.95);
  border-bottom: 1px solid var(--border);
}

[data-theme="dark"] .lang-btn.active {
  background-color: var(--primary);
  color: white;
}

[data-theme="dark"] .step {
  background: #565b5f;
  border-color: #495057;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  color: var(--primary);
  transition: var(--transition);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--primary);
}

/* Language Switcher */
.language-switcher {
  display: flex;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.lang-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.lang-btn:hover {
  color: var(--text-primary);
}

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

/* Main */
.main {
  padding-top: 70px;
}

/* Hero Section */
.hero {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  overflow: hidden;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  min-height: 500px;
}

.hero-text {
  z-index: 3;
  position: relative;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  animation: fadeInUp 1s ease 0.5s forwards;
}

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

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.5;
  opacity: 0;
  animation: fadeInUp 1s ease 0.8s forwards;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  opacity: 0;
  animation: fadeInUp 1s ease 1.1s forwards;
}

.cta-button {
  padding: var(--spacing-md) var(--spacing-xl);
  background: linear-gradient(45deg, var(--primary), #0052CC);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
  transform: translateY(0);
}

.cta-button:hover {
  background: linear-gradient(45deg, var(--primary-hover), #003D99);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
}

/* Phone Mockup */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 1;
}

.phone-mockup {
  width: 280px;
  height: 560px;
  background: linear-gradient(145deg, #2C2C2C, #1A1A1A);
  border-radius: 35px;
  padding: 20px;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  transform: rotate(-5deg);
  animation: float 6s ease-in-out infinite;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: white;
  border-radius: 25px;
  overflow: hidden;
  position: relative;
}

.app-interface {
  padding: var(--spacing-md);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card-preview {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.card-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.card-item span {
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

/* Animated Codes */
.barcode, .qrcode {
  width: 60px;
  height: 40px;
  position: relative;
  overflow: hidden;
}

/* QR Code Image */
.qr-image {
  width: 60px;
  height: 40px;
  object-fit: contain;
}

/* All cards - always light theme */
.card-item {
  background: #F8F9FA !important;
  border: 1px solid #E9ECEF !important;
}

.card-item span {
  color: #1A1A1A !important;
}

/* Dark theme override for all cards */
[data-theme="dark"] .card-item {
  background: #F8F9FA !important;
  border: 1px solid #E9ECEF !important;
}

[data-theme="dark"] .card-item span {
  color: #1A1A1A !important;
}

.barcode.animated::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: repeating-linear-gradient(
    90deg,
    #000000 0px,
    #000000 2px,
    transparent 2px,
    transparent 4px,
    #000000 4px,
    #000000 5px,
    transparent 5px,
    transparent 8px
  );
  animation: barcodeScan 3s ease-in-out infinite;
}

.qrcode.animated::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(90deg, var(--text-primary) 50%, transparent 50%),
    linear-gradient(var(--text-primary) 50%, transparent 50%);
  background-size: 8px 8px;
  animation: qrcodePulse 2s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: rotate(-5deg) translateY(0px); }
  50% { transform: rotate(-5deg) translateY(-20px); }
}

@keyframes barcodeScan {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 1; }
}

@keyframes qrcodePulse {
  0%, 100% { opacity: 0.8; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

/* Features Section */
.features {
  padding: var(--spacing-3xl) 0;
  background-color: var(--bg-primary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--bg-primary);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-slow);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow-lg);
  border-color: var(--primary);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 102, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: rgba(0, 102, 255, 0.15);
  transform: scale(1.1);
}

.feature-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

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

/* Installation Section */
.installation {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-primary);
}

.installation-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin: var(--spacing-xl) auto var(--spacing-2xl);
  max-width: 300px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--shadow);
}

.tab-btn {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.tab-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 2px 8px rgba(0, 102, 255, 0.3);
}

.tab-btn:hover:not(.active) {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.tab-content {
  display: none;
  max-width: 800px;
  margin: 0 auto;
}

.tab-content.active {
  display: block;
}

.installation-steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.step {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--bg-primary);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  transform: scaleY(0);
  transform-origin: top;
  transition: var(--transition-slow);
}

.step:hover {
  transform: translateX(5px);
  box-shadow: 0 8px 25px var(--shadow-lg);
  border-color: var(--primary);
}

.step:hover::before {
  transform: scaleY(1);
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(45deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.step-content h4 {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-sm) 0;
}

.step-content p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.installation-note {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.05), rgba(255, 107, 107, 0.05));
  border: 2px solid rgba(0, 102, 255, 0.1);
  border-radius: var(--radius-lg);
  margin: var(--spacing-2xl) auto 0;
  max-width: 800px;
  position: relative;
  overflow: hidden;
}

.installation-note::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.note-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.note-content h4 {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-sm) 0;
}

.note-content p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Screenshots Section */
.screenshots {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

.section-title {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  text-align: center;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xl);
}

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

.screenshot-card {
  text-align: center;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 25px var(--shadow);
  transition: var(--transition-slow);
}

.screenshot-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 35px var(--shadow-lg);
}

.screenshot-mockup {
  height: 400px;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.mockup-content {
  width: 200px;
  height: 350px;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.tab-bar {
  height: 50px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
}

/* Mockup Content Styles */
.cards-list {
  padding: var(--spacing-md);
}

.card-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.mini-barcode, .mini-qr {
  width: 30px;
  height: 20px;
  background: var(--text-primary);
}

.mini-barcode {
  background-image: repeating-linear-gradient(
    90deg,
    #000000 0px,
    #000000 1px,
    transparent 1px,
    transparent 2px
  );
}

.mini-qr {
  background-image: 
    linear-gradient(90deg, var(--text-primary) 50%, transparent 50%),
    linear-gradient(var(--text-primary) 50%, transparent 50%);
  background-size: 4px 4px;
}

.scanner-interface {
  padding: var(--spacing-md);
  text-align: center;
}

.scanner-frame {
  width: 150px;
  height: 150px;
  border: 3px solid var(--primary);
  border-radius: var(--radius-md);
  margin: 0 auto var(--spacing-md);
  position: relative;
  background: rgba(0, 102, 255, 0.1);
}

.scanner-frame::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  animation: scanLine 2s ease-in-out infinite;
}

@keyframes scanLine {
  0%, 100% { transform: translateY(-75px); }
  50% { transform: translateY(75px); }
}

.settings-list {
  padding: var(--spacing-md);
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.toggle {
  width: 40px;
  height: 20px;
  background: var(--primary);
  border-radius: 10px;
  position: relative;
  margin-left: var(--spacing-md);
  flex-shrink: 0;
}

.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  transition: var(--transition);
}

.screenshot-card h3 {
  padding: var(--spacing-lg);
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

/* Footer */
.footer {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: start;
}

.footer-brand .logo {
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
  justify-content: flex-start;
}

.footer-brand .logo-text {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 1rem;
}

.footer-title {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
}

.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-list li {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

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

.footer-info {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-tech {
  display: flex;
  gap: var(--spacing-sm);
}

.tech-badge {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--border);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-xl);
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .hero-actions {
    justify-content: center;
    text-align: center;
  }
  
  .phone-mockup {
    width: 240px;
    height: 480px;
    transform: rotate(0deg);
  }
  
  .screenshots-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-brand {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: var(--spacing-lg);
  }
  
  .footer-features,
  .footer-support {
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .footer-tech {
    justify-content: center;
  }
  
  .step {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
    padding: var(--spacing-lg);
    align-items: center;
  }
  
  .step:hover {
    transform: translateY(-5px);
  }
  
  .installation-note {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
    padding: var(--spacing-lg);
  }
  
  .note-icon {
    align-self: center;
  }
  .footer-brand .logo {
    justify-content: center;
}
}

@media (max-width: 480px) {
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-actions {
    justify-content: center;
    text-align: center;
  }
  
  .cta-button {
    width: auto;
    min-width: 200px;
  }
  
  .features, .screenshots {
    padding: var(--spacing-xl) 0;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .phone-mockup {
    width: 210px;
    height: 400px;
  }
  
  .installation-tabs {
    max-width: 250px;
  }
  
  .tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
  }
  
  .installation, .features, .screenshots {
    padding: var(--spacing-xl) 0;
  }
  
  .footer-main {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    text-align: center;
  }
  
  .footer-brand {
    margin-bottom: var(--spacing-md);
    text-align: center;
  }
  
  .footer-title {
    font-size: 1rem;
  }
  
  .footer-list li {
    font-size: 0.875rem;
  }
  .footer-brand .logo {
    justify-content: center;
}
}

/* Modal Windows */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: var(--spacing-md);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  max-width: 400px;
  width: 100%;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s ease;
  border: 2px solid var(--border);
}

.modal-overlay.show .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-message {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border);
  justify-content: flex-end;
}

.modal-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  min-width: 80px;
}

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

.modal-btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.modal-btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.modal-btn-secondary:hover {
  background: var(--bg-tertiary);
  transform: translateY(-1px);
}

/* Modal animations */
@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes modalFadeOut {
  from {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  to {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
  }
}

/* Responsive modal */
@media (max-width: 480px) {
  .modal {
    margin: var(--spacing-md);
    max-width: none;
    width: auto;
  }
  
  .modal-actions {
    flex-direction: column;
  }
  
  .modal-btn {
    width: 100%;
  }
}

/* Smooth scroll */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}