/* ========== Variables ========== */
:root {
  /* Colors */
  --primary-color: #4a6cf7;
  --primary-hover: #3655d8;
  --secondary-color: #6c757d;
  --dark-color: #131b2e;
  --light-color: #f8f9fa;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --info-color: #17a2b8;
  
  /* Typography */
  --body-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --heading-font: var(--body-font);
  --code-font: 'Source Code Pro', Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;  /* 4px */
  --spacing-sm: 0.5rem;   /* 8px */
  --spacing-md: 1rem;     /* 16px */
  --spacing-lg: 2rem;     /* 32px */
  --spacing-xl: 3rem;     /* 48px */
  --spacing-xxl: 5rem;    /* 80px */
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  
  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 1rem;      /* 16px */
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding: 1.5rem;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--body-font);
  line-height: 1.6;
  color: #333;
  background-color: #fff;
  overflow-x: hidden;
}

img, svg, video {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

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

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

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: 1rem;
}

pre, code {
  font-family: var(--code-font);
}

/* ========== Layout ========== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-padding {
  padding: var(--spacing-xl) 0;
}

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

.mt-lg {
  margin-top: var(--spacing-lg);
}

.bg-light {
  background-color: var(--light-color);
}

.bg-dark {
  background-color: var(--dark-color);
  color: #fff;
}

.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4, .bg-dark h5, .bg-dark h6 {
  color: #fff;
}

/* ========== Components ========== */

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  line-height: 1;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  border: 1px solid var(--primary-color);
}

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

.btn-secondary {
  background-color: var(--secondary-color);
  color: white;
  border: 1px solid var(--secondary-color);
}

.btn-secondary:hover {
  background-color: #5a6268;
  border-color: #5a6268;
  color: white;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid currentColor;
}

.bg-dark .btn-outline {
  color: white;
}

.btn-outline:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.bg-dark .btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Links */
.link-arrow {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
  transition: transform var(--transition-fast);
}

.link-arrow::after {
  content: "→";
  margin-left: 0.5rem;
  transition: transform var(--transition-fast);
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo a {
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
}

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

.menu-toggle {
  display: none;
}

.menu-toggle .bar {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--dark-color);
  margin: 5px 0;
  transition: all var(--transition-fast);
}

/* ========== Hero Section ========== */
.hero-section {
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(to bottom right, #f8f9ff, #e6ebff);
  overflow: hidden;
  position: relative;
}

.hero-content {
  max-width: 600px;
  margin-bottom: var(--spacing-xl);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  color: #4a5568;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-bottom: var(--spacing-lg);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: var(--spacing-lg);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-item strong {
  font-size: 1.5rem;
  color: var(--primary-color);
}

.stat-item span {
  font-size: 0.875rem;
  color: var(--secondary-color);
}

/* ========== Features Section ========== */
.section-header {
  margin-bottom: var(--spacing-xl);
}

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

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

.feature-card {
  background-color: #fff;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.feature-icon {
  margin-bottom: var(--spacing-md);
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
}

/* ========== Code Examples Section ========== */
.code-demo {
  background-color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.code-tabs {
  display: flex;
  background-color: #f1f5f9;
  overflow-x: auto;
}

.code-tab {
  padding: 1rem 1.5rem;
  font-weight: 600;
  color: var(--secondary-color);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  white-space: nowrap;
}

.code-tab.active {
  background-color: white;
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
}

.code-panel {
  display: none;
  padding: 0;
}

.code-panel.active {
  display: block;
}

.code-panel pre {
  margin: 0;
  background-color: #282c34;
  border-radius: 0;
  padding: 1.5rem;
  overflow-x: auto;
}

.code-panel code {
  font-family: var(--code-font);
  font-size: 0.9rem;
  color: #abb2bf;
}

/* ========== Clients Section ========== */
.clients-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xl);
}

.client-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: filter var(--transition-normal), opacity var(--transition-normal);
}

.client-logo:hover {
  filter: grayscale(0);
  opacity: 1;
}

/* ========== Testimonials Section ========== */
.testimonials-slider {
  position: relative;
  display: flex;
  overflow-x: hidden;
  margin-bottom: var(--spacing-md);
}

.testimonial-card {
  flex: 0 0 100%;
  background-color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  transition: transform var(--transition-normal);
}

.testimonial-content {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
  color: #4a5568;
}

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

.testimonial-author img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 {
  margin-bottom: 0.25rem;
}

.author-info p {
  margin-bottom: 0;
  color: var(--secondary-color);
  font-size: 0.9rem;
}

.slider-controls {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

.slider-prev, .slider-next {
  width: 40px;
  height: 40px;
  background-color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.slider-prev:hover, .slider-next:hover {
  background-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.slider-prev::before, .slider-next::before {
  content: "";
  width: 10px;
  height: 10px;
  border-style: solid;
  border-width: 2px 2px 0 0;
  display: inline-block;
}

.slider-prev::before {
  transform: rotate(-135deg);
}

.slider-next::before {
  transform: rotate(45deg);
}

/* ========== Pricing Section ========== */
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.pricing-card {
  background-color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.pricing-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.05);
  z-index: 1;
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-5px);
}

.pricing-header {
  padding: var(--spacing-lg);
  background-color: #f8f9fa;
  text-align: center;
  border-bottom: 1px solid #eee;
}

.pricing-header h3 {
  margin-bottom: var(--spacing-sm);
}

.pricing-cost {
  margin-bottom: var(--spacing-md);
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--dark-color);
}

.period {
  font-size: 1rem;
  color: var(--secondary-color);
}

.pricing-features {
  padding: var(--spacing-lg);
}

.pricing-features ul {
  margin-bottom: var(--spacing-lg);
}

.pricing-features li {
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
}

.pricing-features li::before {
  content: "✓";
  color: var(--primary-color);
  font-weight: bold;
  margin-right: var(--spacing-sm);
}

.pricing-cta {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  text-align: center;
}

/* ========== Getting Started Section ========== */
.getting-started-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.getting-started-content h2 {
  margin-bottom: var(--spacing-md);
}

.getting-started-content p {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
}

/* ========== Footer ========== */
.site-footer {
  background-color: var(--dark-color);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-logo {
  margin-bottom: var(--spacing-md);
}

.footer-column h3 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

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

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transition: background-color var(--transition-fast);
}

.social-links a:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.language-selector select {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
}

/* ========== Cookie Consent ========== */
.cookie-consent {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: white;
  box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.1);
  padding: var(--spacing-md) 0;
  z-index: 1000;
  display: flex;
  align-items: center;
}

.cookie-consent .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.cookie-consent p {
  margin-bottom: 0;
}

.cookie-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

/* ========== Responsive Styles ========== */
@media (max-width: 1200px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-column:first-child {
    grid-column: span 2;
  }
}

@media (max-width: 992px) {
  h1 {
    font-size: 2.25rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .getting-started-grid {
    grid-template-columns: 1fr;
  }
  
  .getting-started-image {
    display: none;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: white;
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    flex-direction: column;
    align-items: flex-start;
  }
  
  .nav-list.active {
    display: flex;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-column:first-child {
    grid-column: span 1;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .cookie-consent .container {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 576px) {
  .section-padding {
    padding: var(--spacing-lg) 0;
  }
  
  .hero-section {
    padding: var(--spacing-xl) 0;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .btn-group {
    flex-direction: column;
  }
}