/* ========================================
   iOS App Companion Website - Main Styles
   ======================================== */

/* CSS Variables */
:root {
  /* Colors - Vibrant Modern Style */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --accent-color: #667eea;
  --accent-hover: #764ba2;
  --background: #f8f9fa;
  --surface: #ffffff;
  --text-primary: #2d3748;
  --text-secondary: #718096;
  --text-light: #a0aec0;
  --border-color: #e2e8f0;

  /* Typography */
  --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--accent-color);
}

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

/* Language Selector */
.language-selector {
  position: relative;
}

.language-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.language-btn:hover {
  border-color: var(--accent-color);
}

.language-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--spacing-xs);
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 150px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
}

.language-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-option {
  display: block;
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-sm);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-primary);
  transition: background var(--transition-fast);
}

.language-option:hover {
  background: var(--background);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
  padding: calc(80px + var(--spacing-2xl)) 0 var(--spacing-2xl);
  background: var(--primary-gradient);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.95;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.4s backwards;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--accent-hover);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: white;
}

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

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Features Section */
.features {
  padding: var(--spacing-2xl) 0;
  background: var(--surface);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  fill: white;
}

.feature-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.feature-card p {
  color: var(--text-secondary);
  margin: 0;
}

/* Screenshots Section */
.screenshots {
  padding: var(--spacing-2xl) 0;
  background: var(--background);
}

.screenshots-slider {
  display: flex;
  gap: var(--spacing-md);
  overflow-x: auto;
  padding: var(--spacing-md) 0;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.screenshots-slider::-webkit-scrollbar {
  height: 8px;
}

.screenshots-slider::-webkit-scrollbar-track {
  background: var(--border-color);
  border-radius: 4px;
}

.screenshots-slider::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 4px;
}

.screenshot-item {
  flex: 0 0 auto;
  width: 280px;
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base);
}

.screenshot-item:hover {
  transform: scale(1.05);
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
}

/* Content Pages */
.page-header {
  padding: calc(80px + var(--spacing-2xl)) 0 var(--spacing-xl);
  background: var(--primary-gradient);
  color: white;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.page-header p {
  font-size: 1.125rem;
  opacity: 0.9;
}

.content-section {
  padding: var(--spacing-2xl) 0;
  background: var(--surface);
}

.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.content-wrapper h2 {
  color: var(--text-primary);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--accent-color);
}

.content-wrapper h3 {
  color: var(--text-primary);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.content-wrapper p,
.content-wrapper ul,
.content-wrapper ol {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.content-wrapper ul,
.content-wrapper ol {
  padding-left: var(--spacing-lg);
}

.content-wrapper li {
  margin-bottom: var(--spacing-xs);
}

.content-wrapper a {
  color: var(--accent-color);
  text-decoration: underline;
}

.last-updated {
  color: var(--text-light);
  font-size: 0.875rem;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

/* Support Page */
.support-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.support-card {
  background: var(--surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.support-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.support-card-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
}

.support-card-icon svg {
  width: 28px;
  height: 28px;
  fill: white;
}

.support-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.support-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--surface);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--surface);
  transition: border-color var(--transition-fast);
}

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

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-submit {
  text-align: center;
}

/* FAQ Section */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  margin-bottom: var(--spacing-sm);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-md);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--background);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  fill: var(--text-secondary);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--text-secondary);
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
}

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

.footer-section li {
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: white;
}

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

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.hidden { display: none !important; }

/* Responsive Design */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-md);
  }

  .nav-links.active {
    display: flex;
  }

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

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

  .btn {
    width: 100%;
    justify-content: center;
  }

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

  .screenshot-item {
    width: 240px;
  }

  .content-wrapper {
    padding: 0 var(--spacing-sm);
  }

  .contact-form {
    padding: var(--spacing-md);
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  .hero {
    padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-lg);
  }

  .page-header {
    padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-md);
  }

  .features,
  .screenshots,
  .content-section {
    padding: var(--spacing-lg) 0;
  }
}