/**
 * Responsive Styles - Sales Website
 * Mobile, Tablet, and Desktop Adaptations
 * Requirements: 1.6
 */

/* ============================================
   Breakpoints Reference:
   - Mobile: < 640px
   - Tablet: 640px - 1024px
   - Desktop: > 1024px
   ============================================ */

/* ============================================
   Mobile First Base (< 640px)
   ============================================ */

/* Navigation - Mobile */
.navbar-nav {
  display: none;
}

.navbar-toggle {
  display: flex;
}

.navbar-actions {
  gap: var(--spacing-2);
}

.navbar-actions .btn {
  display: none;
}

.lang-switcher {
  padding: var(--spacing-1) var(--spacing-2);
}

.lang-btn {
  font-size: var(--font-size-xs);
}

/* Hero - Mobile */
.hero {
  padding-top: calc(72px + var(--spacing-10));
  padding-bottom: var(--spacing-10);
}

.hero-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-4);
}

.hero-subtitle {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-6);
}

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

.hero-actions .btn {
  width: 100%;
  max-width: 300px;
}

.hero-image {
  margin-top: var(--spacing-8);
}

/* Section - Mobile */
.section {
  padding-top: var(--spacing-10);
  padding-bottom: var(--spacing-10);
}

.section-lg {
  padding-top: var(--spacing-12);
  padding-bottom: var(--spacing-12);
}

/* Typography - Mobile */
h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }

/* Grid - Mobile */
.grid-cols-2,
.grid-cols-3,
.grid-cols-4 {
  grid-template-columns: 1fr;
}

/* Pricing - Mobile */
.pricing-grid {
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
}

.pricing-card {
  padding: var(--spacing-6);
}

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

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

.pricing-amount {
  font-size: var(--font-size-4xl);
}

.pricing-header {
  margin-bottom: var(--spacing-8);
}

.pricing-title {
  font-size: var(--font-size-2xl);
}

/* Feature Cards - Mobile */
.feature-card {
  padding: var(--spacing-6);
}

.feature-icon {
  width: 56px;
  height: 56px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

/* Footer - Mobile */
.footer-grid {
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
}

.footer-brand {
  max-width: 100%;
  text-align: center;
}

.footer-social {
  justify-content: center;
}

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

.footer-links {
  align-items: center;
}

.footer-bottom {
  flex-direction: column;
  gap: var(--spacing-4);
  text-align: center;
}

.footer-legal {
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-4);
}

/* Comparison Table - Mobile */
.comparison-table {
  display: block;
  overflow-x: auto;
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

/* Modal - Mobile */
.modal {
  width: 95%;
  max-height: 85vh;
}

.modal-header,
.modal-body,
.modal-footer {
  padding: var(--spacing-4);
}

.modal-footer {
  flex-direction: column;
}

.modal-footer .btn {
  width: 100%;
}

/* License Display - Mobile */
.license-key {
  font-size: var(--font-size-lg);
}

.license-actions {
  flex-direction: column;
}

.license-actions .btn {
  width: 100%;
}

/* Forms - Mobile */
.input-group {
  flex-direction: column;
}

.input-group .form-input {
  border-radius: var(--radius-lg);
}

.input-group .btn {
  border-radius: var(--radius-lg);
  width: 100%;
}

/* Utility - Mobile */
.hide-mobile {
  display: none !important;
}

/* Demo Carousel - Mobile */
.demo-tabs {
  flex-wrap: nowrap;
  justify-content: flex-start;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: var(--spacing-2);
  margin-left: calc(-1 * var(--container-padding));
  margin-right: calc(-1 * var(--container-padding));
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.demo-tabs::-webkit-scrollbar {
  display: none;
}

.demo-tab {
  flex-shrink: 0;
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
}

/* Demo Content Wrapper - Stack on mobile */
.demo-content-wrapper {
  flex-direction: column;
  gap: var(--spacing-4);
}

.demo-carousel {
  flex: none;
  max-width: 100%;
  width: 100%;
  margin-left: calc(-1 * var(--container-padding));
  margin-right: calc(-1 * var(--container-padding));
  border-radius: 0;
}

.demo-carousel-track {
  aspect-ratio: 3 / 2;
}

.demo-nav {
  display: none;
}

.demo-indicators {
  bottom: var(--spacing-2);
}

.demo-indicator {
  width: 6px;
  height: 6px;
}

.demo-indicator.active {
  width: 18px;
}

.demo-info-panel {
  min-width: auto;
  width: 100%;
  padding: var(--spacing-4);
}

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

.demo-info h3 {
  font-size: var(--font-size-lg);
}

.demo-info > p {
  font-size: var(--font-size-base);
}


/* ============================================
   Tablet (640px - 1024px)
   ============================================ */
@media (min-width: 640px) {
  /* Container */
  :root {
    --container-padding: var(--spacing-6);
  }

  /* Navigation - Tablet */
  .navbar-actions .btn {
    display: inline-flex;
  }

  .lang-switcher {
    padding: var(--spacing-2) var(--spacing-3);
  }

  .lang-btn {
    font-size: var(--font-size-sm);
  }

  /* Hero - Tablet */
  .hero {
    padding-top: calc(72px + var(--spacing-12));
    padding-bottom: var(--spacing-12);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .hero-actions {
    flex-direction: row;
  }

  .hero-actions .btn {
    width: auto;
  }

  /* Section - Tablet */
  .section {
    padding-top: var(--spacing-12);
    padding-bottom: var(--spacing-12);
  }

  /* Typography - Tablet */
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }

  /* Grid - Tablet */
  .grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Pricing - Tablet */
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
  }

  .pricing-card.recommended {
    grid-column: span 2;
    max-width: 400px;
    margin: 0 auto;
  }

  .pricing-title {
    font-size: var(--font-size-3xl);
  }

  /* Footer - Tablet */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
  }

  .footer-brand {
    grid-column: span 2;
    text-align: left;
    max-width: 400px;
  }

  .footer-social {
    justify-content: flex-start;
  }

  .footer-column {
    text-align: left;
  }

  .footer-links {
    align-items: flex-start;
  }

  .footer-bottom {
    flex-direction: row;
  }

  /* Modal - Tablet */
  .modal-footer {
    flex-direction: row;
  }

  .modal-footer .btn {
    width: auto;
  }

  /* License Display - Tablet */
  .license-key {
    font-size: var(--font-size-xl);
  }

  .license-actions {
    flex-direction: row;
  }

  .license-actions .btn {
    width: auto;
  }

  /* Forms - Tablet */
  .input-group {
    flex-direction: row;
  }

  .input-group .form-input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
  }

  .input-group .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    width: auto;
  }

  /* Utility - Tablet */
  .hide-mobile {
    display: block !important;
  }

  .hide-tablet {
    display: none !important;
  }

  /* Demo Carousel - Tablet */
  .demo-tabs {
    flex-wrap: wrap;
    justify-content: center;
    overflow-x: visible;
    margin-left: 0;
    margin-right: 0;
    padding-left: 0;
    padding-right: 0;
  }

  .demo-tab {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
  }

  /* Demo Content Wrapper - Still stacked on tablet */
  .demo-content-wrapper {
    flex-direction: column;
    gap: var(--spacing-6);
    align-items: center;
  }

  .demo-carousel {
    flex: none;
    max-width: 600px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    border-radius: var(--radius-xl);
  }

  .demo-carousel-track {
    aspect-ratio: 600 / 400;
  }

  .demo-nav {
    display: flex;
    width: 36px;
    height: 36px;
  }

  .demo-indicators {
    bottom: var(--spacing-3);
  }

  .demo-indicator {
    width: 8px;
    height: 8px;
  }

  .demo-indicator.active {
    width: 20px;
  }

  .demo-info-panel {
    max-width: 600px;
    width: 100%;
  }

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

  .demo-info h3 {
    font-size: var(--font-size-xl);
  }
}


/* ============================================
   Desktop (> 1024px)
   ============================================ */
@media (min-width: 1024px) {
  /* Container */
  :root {
    --container-padding: var(--spacing-8);
  }

  /* Navigation - Desktop */
  .navbar-nav {
    display: flex;
  }

  .navbar-toggle {
    display: none;
  }

  .navbar-mobile {
    display: none !important;
  }

  /* Hero - Desktop */
  .hero {
    padding-top: calc(72px + var(--spacing-16));
    padding-bottom: var(--spacing-16);
  }

  .hero-title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-6);
  }

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

  .hero-image {
    margin-top: var(--spacing-12);
  }

  /* Section - Desktop */
  .section {
    padding-top: var(--spacing-16);
    padding-bottom: var(--spacing-16);
  }

  .section-lg {
    padding-top: var(--spacing-24);
    padding-bottom: var(--spacing-24);
  }

  /* Typography - Desktop */
  h1 { font-size: var(--font-size-4xl); }
  h2 { font-size: var(--font-size-3xl); }
  h3 { font-size: var(--font-size-2xl); }

  /* Grid - Desktop */
  .grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Pricing - Desktop */
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pricing-card {
    padding: var(--spacing-8);
  }

  .pricing-card.recommended {
    grid-column: auto;
    max-width: none;
  }

  .pricing-card.recommended:hover {
    transform: translateY(-6px);
  }

  .pricing-amount {
    font-size: var(--font-size-5xl);
  }

  .pricing-header {
    margin-bottom: var(--spacing-12);
  }

  /* Feature Cards - Desktop */
  .feature-card {
    padding: var(--spacing-8);
  }

  .feature-icon {
    width: 64px;
    height: 64px;
  }

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

  /* Footer - Desktop */
  .footer-grid {
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-12);
  }

  .footer-brand {
    grid-column: auto;
    max-width: 300px;
  }

  /* License Display - Desktop */
  .license-key {
    font-size: var(--font-size-2xl);
  }

  /* Utility - Desktop */
  .hide-tablet {
    display: block !important;
  }

  .hide-desktop {
    display: none !important;
  }

  /* Demo Carousel - Desktop - Side by Side Layout */
  .demo-tabs {
    gap: var(--spacing-3);
  }

  .demo-tab {
    padding: var(--spacing-3) var(--spacing-5);
    font-size: var(--font-size-base);
  }

  /* Demo Content Wrapper - Side by side on desktop */
  .demo-content-wrapper {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-8);
  }

  .demo-carousel {
    flex: 0 0 600px;
    max-width: 600px;
  }

  .demo-nav {
    width: 40px;
    height: 40px;
  }

  .demo-indicators {
    bottom: var(--spacing-4);
  }

  .demo-indicator.active {
    width: 24px;
  }

  .demo-info-panel {
    flex: 1;
    min-width: 320px;
    max-width: none;
  }

  .demo-info {
    text-align: left;
  }

  .demo-info h3 {
    font-size: var(--font-size-xl);
  }

  .demo-info > p {
    font-size: var(--font-size-base);
  }
}

/* ============================================
   Large Desktop (> 1280px)
   ============================================ */
@media (min-width: 1280px) {
  .hero-title {
    font-size: var(--font-size-6xl);
  }

  .pricing-grid {
    gap: var(--spacing-8);
  }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .navbar,
  .footer,
  .btn,
  .navbar-toggle {
    display: none !important;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  .hero {
    padding-top: 0;
    background: none;
  }

  .section {
    padding: 20pt 0;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  .card,
  .pricing-card {
    border: 1px solid #ccc;
    box-shadow: none;
    page-break-inside: avoid;
  }
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================
   Dark Mode Support (Optional)
   ============================================ */
@media (prefers-color-scheme: dark) {
  :root {
    /* Uncomment to enable dark mode */
    /*
    --color-bg-primary: #111827;
    --color-bg-secondary: #1f2937;
    --color-bg-tertiary: #374151;
    --color-text-primary: #f9fafb;
    --color-text-secondary: #d1d5db;
    --color-text-muted: #9ca3af;
    --color-border: #374151;
    --color-border-hover: #4b5563;
    */
  }
}

/* ============================================
   High Contrast Mode
   ============================================ */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #0000ff;
    --color-text-primary: #000000;
    --color-text-secondary: #000000;
    --color-border: #000000;
  }

  .btn-primary {
    border: 2px solid #000000;
  }

  .card,
  .pricing-card {
    border-width: 2px;
  }
}