/* ========================================
   CarOS - Apple-Inspired Design System
   ======================================== */

/* ----- CSS Variables ----- */
:root {
  /* Colors */
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f7;
  --color-bg-dark: #000000;
  --color-text: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-text-light: #f5f5f7;
  --color-accent: #34c759;
  --color-accent-hover: #34c759;
  --color-brand: #34c759;
  --color-brand-dark: #248a3d;
  --color-gold: #f5a623;
  --color-warning: #ff9500;
  --color-danger: #ff3b30;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 17px;
  --font-size-lg: 21px;
  --font-size-xl: 28px;
  --font-size-2xl: 40px;
  --font-size-3xl: 48px;
  --font-size-4xl: 64px;
  --font-size-5xl: 80px;
  --font-size-hero: 96px;

  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 80px;
  --space-2xl: 120px;

  /* Layout */
  --max-width: 980px;
  --max-width-wide: 1200px;
  --nav-height: 48px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 980px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.47059;
  font-weight: 400;
  letter-spacing: -0.022em;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  cursor: pointer;
  background: none;
}

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--color-text);
}

.headline-hero {
  font-size: var(--font-size-hero);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.headline-1 {
  font-size: var(--font-size-5xl);
  font-weight: 700;
}

.headline-2 {
  font-size: var(--font-size-4xl);
  font-weight: 600;
}

.headline-3 {
  font-size: var(--font-size-3xl);
  font-weight: 600;
}

.headline-4 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
}

.headline-5 {
  font-size: var(--font-size-xl);
  font-weight: 600;
}

.body-large {
  font-size: var(--font-size-lg);
  line-height: 1.381;
}

.body-base {
  font-size: var(--font-size-base);
  line-height: 1.47059;
}

.body-small {
  font-size: var(--font-size-sm);
  line-height: 1.42859;
}

.caption {
  font-size: var(--font-size-xs);
  line-height: 1.33337;
  color: var(--color-text-secondary);
}

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

.text-secondary { color: var(--color-text-secondary); }
.text-light { color: var(--color-text-light); }
.text-brand { color: var(--color-brand); }
.text-gold { color: var(--color-gold); }
.text-accent { color: var(--color-accent); }

/* ----- Layout ----- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-xl) 0;
  overflow-x: hidden;
}

.section-lg {
  padding: var(--space-2xl) 0;
}

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

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

.row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.col-2 { flex: 0 0 calc(50% - var(--space-lg) / 2); }
.col-3 { flex: 0 0 calc(33.333% - var(--space-lg) * 2 / 3); }
.col-4 { flex: 0 0 calc(25% - var(--space-lg) * 3 / 4); }

/* ----- Navigation ----- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  height: var(--nav-height);
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  transition: background-color var(--transition-base);
}

.nav.nav-transparent {
  background-color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.nav.nav-dark {
  background-color: rgba(29, 29, 31, 0.8);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

.nav-dark .nav-brand,
.nav-dark .nav-link {
  color: var(--color-text-light);
}

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

.nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.nav-link:hover {
  opacity: 1;
  color: var(--color-text);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-brand);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: background-color var(--transition-fast);
}

.nav-cta:hover {
  background-color: var(--color-brand-dark);
  color: white;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast);
}

/* ----- Hero Section ----- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center bottom;
  z-index: -1;
}

.hero-content {
  max-width: 800px;
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-md);
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 12px 22px;
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
}

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

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

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

.btn-brand:hover {
  background-color: var(--color-brand-dark);
  color: white;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
}

.btn-outline:hover {
  background-color: var(--color-accent);
  color: white;
}

#lifetime:hover {
  background-color: var(--color-gold);
  color: white;
}

.btn-dark {
  background-color: var(--color-bg-dark);
  color: white;
}

.btn-dark:hover {
  background-color: #333;
  color: white;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-accent);
}

.btn-ghost:hover {
  background-color: rgba(0, 113, 227, 0.1);
}

.btn-lg {
  padding: 16px 32px;
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
}

/* ----- Cards ----- */
.card {
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.card-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.card-body {
  padding: var(--space-md);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.card-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

.card-label {
  display: inline-block;
  padding: 4px 10px;
  background-color: var(--color-brand);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-xs);
}

.card-label-warning {
  background-color: var(--color-warning);
}

/* ----- Feature Grid ----- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.feature-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.feature-item-horizontal {
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.feature-content {
  flex: 1;
}

.feature-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.feature-text {
  color: var(--color-text-secondary);
}

/* ----- Pricing Cards ----- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  align-items: start;
}

.pricing-card {
  background-color: var(--color-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  text-align: center;
  border: 2px solid transparent;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card-featured {
  background-color: var(--color-brand);
  color: white;
  transform: scale(1.05);
}

.pricing-card-featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.pricing-card-dark {
  background-color: var(--color-bg-dark);
  color: var(--color-gold);
}

.pricing-card-outline {
  border-color: var(--color-brand);
}

.pricing-tier {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.pricing-price {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-md);
}

.pricing-price small {
  font-size: var(--font-size-lg);
  font-weight: 400;
}

.pricing-features {
  text-align: left;
  margin-bottom: var(--space-lg);
}

.pricing-features li {
  padding: var(--space-xs) 0;
  font-size: var(--font-size-base);
}

.pricing-features li::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-right: var(--space-xs);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2334c759'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
  background-size: contain;
  vertical-align: middle;
}

.pricing-card-featured .pricing-features li::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
}

.pricing-card-dark .pricing-features li::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23f5a623'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
}

/* ----- Video Section ----- */
.video-section {
  position: relative;
  width: 100%;
  background-color: var(--color-bg-dark);
  overflow: hidden;
}

.video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.section-interface {
  position: relative;
  overflow: hidden;
}

.section-interface .video-bg {
  top: auto;
  height: auto;
  min-height: 100%;
  object-position: center bottom;
}

.video-container {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.video-main {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  background-color: white;
  border-radius: 15px;
}

/* ----- Counter Section ----- */
.counter-section {
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: white;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  position: relative;
}

.counter-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
}

.counter-content {
  position: relative;
  z-index: 1;
}

.counter-value {
  font-size: var(--font-size-hero);
  font-weight: 700;
  letter-spacing: 0.02em;
  word-spacing: 0.2em;
  margin: var(--space-md) 0;
  font-variant-numeric: tabular-nums;
}

/* ----- Footer ----- */
.footer {
  background-color: var(--color-bg-alt);
  padding: var(--space-lg) 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-bg);
  border-radius: 50%;
  color: var(--color-text);
  transition: background-color var(--transition-fast);
}

.footer-social a:hover {
  background-color: var(--color-text);
  color: white;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-md);
}

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

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

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

.footer-trademark {
  font-size: 10px;
  color: var(--color-text-secondary);
  opacity: 0.6;
  max-width: 600px;
  margin: var(--space-md) auto 0;
  line-height: 1.5;
}

/* ----- Showcase (2-column alternating) ----- */
.showcase {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.showcase-reverse {
  flex-direction: row-reverse;
}

.showcase-media {
  flex: 1;
}

.showcase-media img {
  width: 100%;
  border-radius: var(--radius-lg);
}

.showcase-content {
  flex: 1;
}

.showcase-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-sm);
}

.showcase-label-new {
  color: var(--color-warning);
}

.showcase-label-updated {
  color: var(--color-brand);
}

.showcase-title {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.showcase-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ----- App Grid (CarApps) ----- */
.app-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  overflow: hidden;
}

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

.app-card-image {
  max-width: 300px;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-lg);
}

.app-card-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.app-card-title-maps { color: var(--color-warning); }
.app-card-title-music { color: #b474a4; }
.app-card-title-messages { color: var(--color-brand); }
.app-card-title-phone { color: var(--color-brand); }

.app-card-text {
  color: var(--color-text-secondary);
  max-width: 400px;
  margin: 0 auto;
}

/* ----- Partners Section ----- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.partner-card {
  text-align: center;
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform var(--transition-base), background var(--transition-base);
}

.partner-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.08);
}

.partner-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.partner-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.partner-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.partner-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ----- Features List ----- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.feature-card {
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.feature-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.feature-card-title-live {
  color: var(--color-danger);
}

.feature-card-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ----- Info Cards ----- */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.info-card {
  padding: var(--space-md);
}

.info-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-brand);
  color: white;
  border-radius: 50%;
  font-size: 24px;
}

.info-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.info-text {
  color: var(--color-text-secondary);
}

/* ----- Accordion ----- */
.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.accordion-header {
  width: 100%;
  padding: var(--space-md) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.accordion-header:hover {
  color: var(--color-accent);
}

.accordion-icon {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-base);
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

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

.accordion-item.active .accordion-content {
  max-height: 2000px;
}

.accordion-body {
  padding-bottom: var(--space-md);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ----- Store Grid ----- */
.store-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.store-card {
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.store-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.store-card-image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.store-card-body {
  padding: var(--space-md);
  text-align: center;
}

.store-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.store-card-price {
  font-size: var(--font-size-lg);
  color: var(--color-brand);
  font-weight: 600;
}

.store-card-shipping {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ----- Product Page ----- */
.product-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.product-gallery {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
}

.product-image {
  width: 100%;
  border-radius: var(--radius-lg);
}

.product-info {
  padding: var(--space-lg) 0;
}

.product-title {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.product-price {
  font-size: var(--font-size-2xl);
  color: var(--color-brand);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.product-stock {
  display: inline-block;
  padding: 4px 12px;
  background-color: rgba(52, 199, 89, 0.1);
  color: var(--color-brand);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.product-description {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

/* ----- Support Page ----- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  max-width: 600px;
  margin: 0 auto;
}

.contact-card {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: transform var(--transition-base);
}

.contact-card:hover {
  transform: translateY(-4px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-sm);
}

.contact-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.contact-text {
  color: var(--color-text-secondary);
}

/* ----- Thanks Page ----- */
.thanks-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl);
}

.thanks-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-md);
  background-color: var(--color-brand);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thanks-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}

.thanks-title {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-brand);
}

.thanks-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ----- Animations ----- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.animate-fade {
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.animate-fade.animate-in {
  opacity: 1;
}

.animate-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.animate-scale.animate-in {
  opacity: 1;
  transform: scale(1);
}

.animate-slide-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.animate-slide-left.animate-in {
  opacity: 1;
  transform: translateX(0);
}

.animate-slide-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.animate-slide-right.animate-in {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children animations */
.animate-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.animate-stagger.animate-in > *:nth-child(1) { transition-delay: 0.1s; }
.animate-stagger.animate-in > *:nth-child(2) { transition-delay: 0.2s; }
.animate-stagger.animate-in > *:nth-child(3) { transition-delay: 0.3s; }
.animate-stagger.animate-in > *:nth-child(4) { transition-delay: 0.4s; }
.animate-stagger.animate-in > *:nth-child(5) { transition-delay: 0.5s; }
.animate-stagger.animate-in > *:nth-child(6) { transition-delay: 0.6s; }

.animate-stagger.animate-in > * {
  opacity: 1;
  transform: translateY(0);
}

/* ----- Utilities ----- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

/* ----- Responsive ----- */
@media (max-width: 1024px) {
  :root {
    --font-size-hero: 64px;
    --font-size-5xl: 56px;
    --font-size-4xl: 48px;
    --font-size-3xl: 40px;
    --font-size-2xl: 32px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .pricing-card-featured {
    transform: none;
    order: -1;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .store-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-section {
    grid-template-columns: 1fr;
  }

  .product-gallery {
    position: static;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-hero: 48px;
    --font-size-5xl: 40px;
    --font-size-4xl: 36px;
    --font-size-3xl: 32px;
    --font-size-2xl: 28px;
    --space-xl: 60px;
    --space-2xl: 80px;
  }

  .hero-content .btn {
    display: none;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    padding: var(--space-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  }

  .showcase {
    flex-direction: column;
  }

  .showcase-reverse {
    flex-direction: column;
  }

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

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

  .partners-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

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

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

  .hero {
    min-height: auto;
    padding: var(--space-xl) var(--space-md);
    padding-top: calc(var(--nav-height) + var(--space-xl));
  }

  .counter-value {
    font-size: var(--font-size-4xl);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-hero: 36px;
    --font-size-5xl: 32px;
    --font-size-4xl: 28px;
    --font-size-3xl: 24px;
    --font-size-2xl: 22px;
  }

  .btn-lg {
    width: 100%;
  }
}

/* ----- Print Styles ----- */
@media print {
  .nav,
  .footer-social,
  .btn {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: var(--space-md);
  }

  .section {
    padding: var(--space-md) 0;
  }
}